rename trunk to 1.1svn/1.1github/svn/1.1

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/1.1@2662 b956fd51-792f-4845-bead-9b4dfca2ff2c

28 files changed, 37834 insertions, 0 deletions

diff --git a/src/lib/JEDI-SDL/JEDI-SDL-README.txt b/src/lib/JEDI-SDL/JEDI-SDL-README.txt
new file mode 100644
index 00000000..8e0d25f9
--- /dev/null
+++ b/src/lib/JEDI-SDL/JEDI-SDL-README.txt
@@ -0,0 +1,244 @@
+This is the based on the SDL ( http://www.libsdl.org ) headers, and has been converted, comments and all, to the Pascal unit called sdl.pas.
+Other conversions that have also been done are SDL_Mixer.h, SDL_Net.h, SDL_Image.h, SDL_ttf, SMPEG.h, SDL_sound and the SFont library, 
+which are all included in this distribution.
+
+It allows you to access all the functions within the SDL libraries under Windows, Linux and FreeBSD, so you can write cross-platform games or multimedia applications.
+
+Installation Instructions
+-------------------------
+Windows - We now have a semi-automated setup under Windows ( thanks to David House and the Jedi JCL team ). 
+           Once you have extracted the zip file, simply double click on the "JEDISDLWin32Installer.exe" to have the correct paths added to your respective 
+           IDEs. All IDEs from Delphi 4 - 7 are supported and it also adds a link to the .CHM help file under the Tools menu.
+
+Linux - Alternatively if you use Linux or want to to manually install the paths, then make sure you read the "Getting Started.html" file ( ideal for those who are new to JEDI-SDL ) and is now included as a guide to help getting everything setup for smooth compilation.
+
+Also included is a guide of how to use Sourceforge using TortoiseCVS under Windows ( Linux guide is under development ).
+Both documents can be found in the "documentation" directory.
+
+
+Release History
+---------------
+1.0  :   Yeah!! The Official v1.0 Release of JEDI-SDL!!
+           JEDI-SDL now updated to SDL v1.2.11, SDL_Image v1.2.5, SDL_Mixer v1.2.7, SDL_Net v1.2.6 & SDL_ttf v2.0.8
+           Added Improved FreePascal, TMT Pascal and GnuPascal support as well as maintaining Delphi/Kylix support.
+           Fixed Various bugs as pointed out on the JEDI-SDL mailing list.
+           Added SDL_GL_STEREO, SDL_GL_MULTISAMPLEBUFFERS, SDL_GL_MULTISAMPLESAMPLES
+
+Now works on MacOS X and a MacOS X disk image is available for download.
+
+// DLL/Shared object functions
+function SDL_LoadObject( const sofile : PChar ) : Pointer;
+
+function SDL_LoadFunction( handle : Pointer; const name : PChar ) : Pointer;
+
+procedure SDL_UnloadObject( handle : Pointer );
+
+//Added function to create RWops from const memory: SDL_RWFromConstMem()
+function SDL_RWFromConstMem(const mem: Pointer; size: Integer) : PSDL_RWops;
+
+//Added support for environment variables SDL_VIDEO_WINDOW_POS and SDL_VIDEO_CENTERED on Windows
+
+           New Units :
+           -----------
+           sdl_cpuinfo.pas - ported SDL_cpuinfo.h so Now you can test for Specific CPU types.
+           sdlinput.pas    - Input wrapper class
+           sdlwindow.pas   - Window wrapper class
+           sdltruetypefont.pas - True Type Font wrapper class
+           tcputils.pas - SDL_Net utility functions
+           sdlweb.pas - SDL_Net Web class
+           sdlwebhttp.pas - SDL_Net http protocol wrapper class
+           sdlwebftp.pas - SDL_Net ftp protocol wrapper class
+
+           New 2D Demos :
+           --------------
+
+
+           New 3D Demos :
+           --------------
+
+
+           Other New Stuff :
+           -----------------
+
+
+
+0.5  :   The JEDI-SDL project is now also set up on Sourceforge ( http://sf.net/projects/jedi-sdl/ ) so the latest code is available from there.
+           Improved FreePascal support has been added.
+           Various bug fixes as pointed out on the JEDI-SDL mailing list.
+           SDL_Mixer has been updated to version 1.2.1 and includes an Effects API.
+           Demo directories are now split into 2D and 3D related sub-directories.
+           There are now both Kylix ( K prefix )  and Delphi ( D prefix ) project groups for all the demos. 
+           They can be found in Demos and the 2D and 3D directories.
+
+           New Units
+           ---------
+           SDLStreams.pas - Chris Bruner has created a wrapper that uses Streams to load BMPs
+           SDLUtils.pas - Pascal only version of some Utility functions
+           SDLi386Utils.pas - Intel Assembler versions of the SDLUtils.pas functions.
+           SDL_ttf.pas - Port of the SDL True Type font support unit.
+           SDL_Sound.pas - Port of the SDL Sound library ( untested ).
+
+           New 2D Demos :
+           --------------
+           Pan and Zoom Demo - How to Pan and Zoom an SDL surface.
+           Isometric Demo - I ported my old DelphiX isometric demo over to SDL.
+           TestTimer demo - Shows hows how to use AddTimer and RemoveTimer.
+           MpegPlayer - I have updated and improved Anders Ohlsson's CLX MPegPlayer and component and it now works 
+           and installs into D4, D5, D6, D7, K1, K2 & K3.
+           Showfont - Demo to show how to us SDL_ttf.dll
+           SmpegPlayer - is a console MPEG player that use smpeg and SDL_Mixer
+
+           New 3D Demos :
+           --------------
+           DeathTruckTion 1.1 - A slightly updated version of this fully functional 3D network game.
+           TerrainDemo - Terrain demo ported from the book "OpenGL Game programming" by Hawkins and Astle.
+           TestGL - the standard SDL/OpenGL Test demo. Shows how to mix 2D and 3D rendering using OpenGL.
+           glfont - Demo to show how to us SDL_ttf with OpenGL. 
+           Particle Engine - Ariel's OpenGL Particle Engine.
+           Picking - Phil Freeman's Picking Demo
+           Motion Blur - Phil Freeman's Motion Blur Demo
+           Dynamic Light - Phil Freeman's Dynamic Light Demo
+           Environment Map - Phil Freeman's Environment Map Demo
+           GLMovie - is an MPEG Player that uses OpenGL to render the movie.
+           NeHe - Quite a few more NeHe demos are now included.
+
+           New Network Demos :
+           -------------------
+           There are now 3 SDL_Net Server demos and 4 SDL_Client demos as submitted by Dean Ellis.
+
+
+Beta 4 : The JEDI-SDL home page is now located @ http://www.delphi-jedi.org/Jedi:TEAM_SDL_HOME
+         All Demos ( including OpenGL Demos ) now compile under both Kylix and Delphi.
+         I have added quite a few more OpenGL examples, we are now up to Nehe tutorial 12.
+         All OpenGL demos also show how to handle Window resizing. 
+         Included an OpenGL demo called Puntos by Gustavo Maximo.
+         Ported Jan Horn's OpenGL MetaBalls and also SkyBox demo to SDL.
+         Ported Ilkka Tuomioja's OpenGL Quake 2 Model Viewer/Animator to SDL. 
+         NOTE : All OpenGL demos require OpenGL12.pas which can be found at...
+         http://www.lischke-online.de/Graphics.html#OpenGL12
+         I also fixed a conversion bug to do with SDL_MustLock and also a conversion omission to do with various events.
+         Fixed a conversion bug with SDL_CDOpen ( as suggested on the mailing list ).
+         Added the GetPixel and PuxPixel functions to the SDLUtils.pas file.
+         Jason Farmer has donated SFont, a simple, yet effective Font library he converted for JEDI-SDL.
+         It contains 4 Demos show how to best use it.
+         Added TUInt8Array and PUIntArray to SDL.pas after suggestions from Matthias Thoma and Eric Grange.
+         In the file area of the JEDI-SDL mailing list ( http://groups.yahoo.com/group/JEDI-SDL/files/DTTSrc/ there 
+         is a fully functional 3D network game called DeathTruckTion v1.0 written by the TNTeam that makes use of 
+         JEDI-SDL and is just too big to include with this distribution but is well worth looking at as it works under Windows and Linux!         
+         Gustavo Maxima is working on translating the JEDI-SDL Documentation to Spanish and Portugese.
+         The Mouse Demo has now been speeded up considerably and it is very responsive now.
+         Dean Ellis will provide steps on how to compile the demos using the Free Pascal compiler.
+         Jason Farmer and I are working on a series of Tutorials that should hopefully be out soon.
+         David Aclan has donated a SMpeg component that should work under Kylix.
+         Róbert Kisnémeth, has been hard at work, and has donated some new demos he has created with a SpriteEngine ( which he also donated ).
+         He has also donated a couple of games called BlitzBomber and Oxygene ( which uses the SpriteEngine ) and added a couple of useful 
+         functions to SDLUtils.pas.
+         The Functions added are SDL_FlipV, SDL_FlipH, SDL_NewPutPixel ( assembler version ), SDL_AddPixel, SDL_SubPixel, SDL_DrawLine, SDL_AddLine,
+         SDL_SubLine, SDL_AddSurface, SDL_SubSurface, SDL_MonoSurface & SDL_TexturedSurface.
+         He has also donated a Font Blitting class and demo called SDL_MonoFonts which supports alignment like Left, Right and Center.
+         He and Thomas are also working on a GUI library.
+         Jason Farmer has donated a set of Image Filtering functions which add quite a few interesting effects. Check the SDL_Filter sub-directory for more 
+         info.
+         Christian Hackbart also donated an OpenGL BlockOut clone.
+         
+
+Beta 3 : I have added conversions for SDL_env.h, SDL_Mixer.h and SDL_Net.h while Matthias Thoma has added conversions for SDL_Image.h and SMPEG.h.
+         This version is also SDL version 1.2.0 compliant.
+         This release also adds demos for the SDL_Image, SDL_Mixer and SDL_Net libraries.
+         There are now also some OpenGL demos that make some use of SDL as well as a demo on how to use the Mouse with Clickable regions.
+         A conversion bug, that was pointed out by Clem Vasseur, has also been fixed.
+         There is now a mailing list that has been set up at http://groups.yahoo.com/group/JEDI-SDL/join/ so we can all learn from each other how to use
+         these libraries.
+         Demos have not been unified into single .dpr files for each demo, thus showing how you would write a crossplatform game using only 1 .dpr file.
+         There is also a documentation directory that is currently in HTML format. All code examples in the documentation have been converted to Object 
+         Pascal but are untested.
+         I Also fixed a few conversion bugs which I came across while converting the documentation.
+
+Beta 2 : I have added  conversions for SDL_active.h, SDL_thread.h, SDL_mutex.h and 
+         SDL_error.h, Matthias Thoma has added Linux Support and JEDI compliancy so these 
+         units and examples are now x-platform and x-compiler compilable.
+         I also added Tom Jones' SDLUtils.pas file;
+         Matthias also cleaned up the 2 new demos and made them work on both Linux and 
+         Windows.
+
+Beta 1 : Initial Release;
+
+
+There are now 5 examples included with this JEDI-SDL distribution. 
+1. Is the TestWin application, which is based on the testwin application that comes with the SDL SDK, only my version has a gui front end to the options available and has been compiled under Delphi 4.03. It should be compatible with Delphi 3.0 onwards ( though Delphi 2 compatibility has not been tested ).
+
+2. A Plasma example which was converted from one found on the Demos page of the SDL site.
+
+3. A Voxel terrain following demo, which was converted from one found on the Demos page of the SDL site. This one should be of interest to others as it shows how to handle keyboard events when using SDL.
+
+4. A Mouse handling demo that shows how to use transparency and clickable regions.
+
+5. A Space Invaders style game called Aliens which shows the use of SDL, SDL_Image and SDL_Mixer. This game shows how to handle sound, keyboards and some basic collision detection. It is a conversion of one found on the SDL Demos page.
+
+There are also 14 OpenGL demos that are based on the NeHe tutorials <nehe.gamedev.net>. The other 3 OpenGL demos are Jan Horns' OpenGL demo, A Quake 2 Model viewer that I ported and a Demo by Gustavo Maxima called Puntos.
+
+If writing your own, just make sure that the SDL.pas file is in your projects path for compiling and that the SDL.dll file is in your path when running the compiled app.
+
+Please test these units and report problems to the JEDI-SDL mailing list @ http://groups.yahoo.com/group/JEDI-SDL/ outlining steps under which the error occurred. If you convert any more demos please send them to me so that I can  
+include them in the ditribution for others to learn from. 
+
+Also if you are using these Units to write any games 
+please let me know about it so that I can post the information to the http://www.DelphiGamer.com site.
+
+The plan is to have this unit JEDI certified at some point so that it can be included on the Delphi and Kylix CDs, so all feedback is greatly welcomed.
+
+Compilers supported     Tested
+-------------------     ------
+Delphi                   Yes
+Kylix                    Yes
+FreePascal               Yes
+TMT Pascal compiler      Not Yet.
+Virtual Pascal           No
+Gnu Pascal               No
+
+
+
+Credits
+-------
+Matthias Thoma <ma.thoma@gmx.de> for is endless help with my conversion bugs.
+Jason Farmer <jason@cerebral-bicycle.co.uk> for donating the SFont Font Library.
+Gustavo Maximo <gmaximo@secretariaplus.com> for the Puntos OpenGL Demo and work he is doing on the documentation
+Róbert Kisnémeth <mikrobi@freemail.hu> for his numerous contributions
+Chris Bruner <cryst@golden.net> for testing under Kylix
+August Logan Bear Jr.<augustjr@columbus.rr.com> for testing under Kylix
+Dean Ellis<dean_ellis@yahoo.com> for FreePascal Compiler compatability testing and SDL_Net demos and testing
+David House<david@dahsoftware.com> for Windows Insaller and testing.
+Romi Kuntsman<romik12345@lycos.co.uk> for helping out on some OpenGL issues.
+Everyone on the JEDI-SDL <http://groups.yahoo.com/group/JEDI-SDL/join/> mailing list for their feedback and support.
+Everyone on the Delphi-JEDI <http://groups.yahoo.com/group/Delphi-JEDI/join/> mailing for answering my conversion questions.
+Tom Jones for inspiring this conversion.
+
+The JEDI-SDL Home page can be found @ http://www.delphi-jedi.org/Jedi:TEAM_SDL_HOME
+
+The JEDI-SDL source code archive can be found @ http://www.sf.net/projects/jedi-sdl/
+
+The JEDI-SDL mailing list can be found @ http://groups.yahoo.com/group/JEDI-SDL/join/
+
+The Latest Stable Release version of the JEDI-SDL.zip file can always be found on the Delphi-JEDI site <http://www.delphi-jedi.org/Jedi:TEAM_SDL_HOME>
+
+The Latest Alpha/Unstable version can always be grabbed from the SourceForge CVS http://sourceforge.net/cvs/?group_id=43805
+
+
+Sincerely,
+
+
+
+Dominique Louis
+Delphi Game Developer.
+*********************************************************
+**  To Do Nothing is to Collaborate with the oppressor **
+**  -------------------------------------------------- **
+*********************************************************
+=========================================================
+From . . . . . . . : Dominique Louis
+Email. . . . . . . : Dominique@SavageSoftware.com.au
+Company. . . . . . : Savage Software Solutions
+Delphi Games Site. : http://www.DelphiGamer.com
+Delphi JEDI Site . : http://www.delphi-jedi.org
+=========================================================
+
diff --git a/src/lib/JEDI-SDL/OpenGL-Set8087CW.patch b/src/lib/JEDI-SDL/OpenGL-Set8087CW.patch
new file mode 100644
index 00000000..e08ca63e
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL-Set8087CW.patch
@@ -0,0 +1,16 @@
+Index: OpenGL/Pas/gl.pas

+===================================================================

+--- OpenGL/Pas/gl.pas	(revision 961)

++++ OpenGL/Pas/gl.pas	(working copy)

+@@ -2287,9 +2287,9 @@

+ end;

+ 

+ initialization

+-  {$ifdef x86}

++  {$IF Defined(CPU386) or Defined(CPUI386) or Defined(CPUX86_64)}

+   Set8087CW($133F);

+-  {$endif x86}

++  {$IFEND}

+ 

+   LoadOpenGL( GLLibName );

+ 

diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/geometry.pas b/src/lib/JEDI-SDL/OpenGL/Pas/geometry.pas
new file mode 100644
index 00000000..166ec811
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/geometry.pas
@@ -0,0 +1,1994 @@
+unit geometry;
+{
+  $Id: geometry.pas,v 1.1 2004/03/30 21:53:54 savage Exp $
+  
+}
+
+// This unit contains many needed types, functions and procedures for
+// quaternion, vector and matrix arithmetics. It is specifically designed
+// for geometric calculations within R3 (affine vector space)
+// and R4 (homogeneous vector space).
+//
+// Note: The terms 'affine' or 'affine coordinates' are not really correct here
+//       because an 'affine transformation' describes generally a transformation which leads
+//       to a uniquely solvable system of equations and has nothing to do with the dimensionality
+//       of a vector. One could use 'projective coordinates' but this is also not really correct
+//       and since I haven't found a better name (or even any correct one), 'affine' is as good
+//       as any other one.
+//
+// Identifiers containing no dimensionality (like affine or homogeneous)
+// and no datatype (integer..extended) are supposed as R4 representation
+// with 'single' floating point type (examples are TVector, TMatrix,
+// and TQuaternion). The default data type is 'single' ('GLFloat' for OpenGL)
+// and used in all routines (except conversions and trigonometric functions).
+//
+// Routines with an open array as argument can either take Func([1,2,3,4,..]) or Func(Vect).
+// The latter is prefered, since no extra stack operations is required.
+// Note: Be careful while passing open array elements! If you pass more elements
+//       than there's room in the result the behaviour will be unpredictable.
+//
+// If not otherwise stated, all angles are given in radians
+// (instead of degrees). Use RadToDeg or DegToRad to convert between them.
+//
+// Geometry.pas was assembled from different sources (like GraphicGems)
+// and relevant books or based on self written code, respectivly.
+//
+// Note: Some aspects need to be considered when using Delphi and pure
+//       assembler code. Delphi ensures that the direction flag is always
+//       cleared while entering a function and expects it cleared on return.
+//       This is in particular important in routines with (CPU) string commands (MOVSD etc.)
+//       The registers EDI, ESI and EBX (as well as the stack management
+//       registers EBP and ESP) must not be changed! EAX, ECX and EDX are
+//       freely available and mostly used for parameter.
+//
+// Version 2.5
+// last change : 04. January 2000
+//
+// (c) Copyright 1999, Dipl. Ing. Mike Lischke (public@lischke-online.de)
+{
+  $Log: geometry.pas,v $
+  Revision 1.1  2004/03/30 21:53:54  savage
+  Moved to it's own folder.
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+type
+  // data types needed for 3D graphics calculation,
+  // included are 'C like' aliases for each type (to be
+  // conformal with OpenGL types)
+
+  PByte = ^Byte;
+  PWord = ^Word;
+  PInteger = ^Integer;
+  PFloat = ^Single;
+  PDouble = ^Double;
+  PExtended = ^Extended;
+  PPointer = ^Pointer;
+
+  // types to specify continous streams of a specific type
+  // switch off range checking to access values beyond the limits
+  PByteVector = ^TByteVector;
+  PByteArray = PByteVector;
+  TByteVector = array[0..0] of Byte;
+
+  PWordVector = ^TWordVector;
+  PWordArray = PWordVector;  // note: there's a same named type in SysUtils
+  TWordVector = array[0..0] of Word;
+
+  PIntegerVector = ^TIntegerVector;
+  PIntegerArray = PIntegerVector;
+  TIntegerVector = array[0..0] of Integer;
+
+  PFloatVector = ^TFloatVector;
+  PFloatArray = PFloatVector;
+  TFloatVector = array[0..0] of Single;
+
+  PDoubleVector = ^TDoubleVector;
+  PDoubleArray = PDoubleVector;
+  TDoubleVector = array[0..0] of Double;
+
+  PExtendedVector = ^TExtendedVector;
+  PExtendedArray = PExtendedVector;
+  TExtendedVector = array[0..0] of Extended;
+
+  PPointerVector = ^TPointerVector;
+  PPointerArray = PPointerVector;
+  TPointerVector = array[0..0] of Pointer;
+
+  PCardinalVector = ^TCardinalVector;
+  PCardinalArray = PCardinalVector;
+  TCardinalVector = array[0..0] of Cardinal;
+
+  // common vector and matrix types with predefined limits
+  // indices correspond like: x -> 0
+  //                          y -> 1
+  //                          z -> 2
+  //                          w -> 3
+
+  PHomogeneousByteVector = ^THomogeneousByteVector;
+  THomogeneousByteVector = array[0..3] of Byte;
+  TVector4b = THomogeneousByteVector;
+
+  PHomogeneousWordVector = ^THomogeneousWordVector;
+  THomogeneousWordVector = array[0..3] of Word;
+  TVector4w = THomogeneousWordVector;
+
+  PHomogeneousIntVector = ^THomogeneousIntVector;
+  THomogeneousIntVector = array[0..3] of Integer;
+  TVector4i = THomogeneousIntVector;
+
+  PHomogeneousFltVector = ^THomogeneousFltVector;
+  THomogeneousFltVector = array[0..3] of Single;
+  TVector4f = THomogeneousFltVector;
+
+  PHomogeneousDblVector = ^THomogeneousDblVector;
+  THomogeneousDblVector = array[0..3] of Double;
+  TVector4d = THomogeneousDblVector;
+
+  PHomogeneousExtVector = ^THomogeneousExtVector;
+  THomogeneousExtVector = array[0..3] of Extended;
+  TVector4e = THomogeneousExtVector;
+
+  PHomogeneousPtrVector = ^THomogeneousPtrVector;
+  THomogeneousPtrVector = array[0..3] of Pointer;
+  TVector4p = THomogeneousPtrVector;
+
+  PAffineByteVector = ^TAffineByteVector;
+  TAffineByteVector = array[0..2] of Byte;
+  TVector3b = TAffineByteVector;
+
+  PAffineWordVector = ^TAffineWordVector;
+  TAffineWordVector = array[0..2] of Word;
+  TVector3w = TAffineWordVector;
+
+  PAffineIntVector = ^TAffineIntVector;
+  TAffineIntVector = array[0..2] of Integer;
+  TVector3i = TAffineIntVector;
+
+  PAffineFltVector = ^TAffineFltVector;
+  TAffineFltVector = array[0..2] of Single;
+  TVector3f = TAffineFltVector;
+
+  PAffineDblVector = ^TAffineDblVector;
+  TAffineDblVector = array[0..2] of Double;
+  TVector3d = TAffineDblVector;
+
+  PAffineExtVector = ^TAffineExtVector;
+  TAffineExtVector = array[0..2] of Extended;
+  TVector3e = TAffineExtVector;
+
+  PAffinePtrVector = ^TAffinePtrVector;
+  TAffinePtrVector = array[0..2] of Pointer;
+  TVector3p = TAffinePtrVector;
+
+  // some simplified names
+  PVector = ^TVector;
+  TVector = THomogeneousFltVector;
+
+  PHomogeneousVector = ^THomogeneousVector;
+  THomogeneousVector = THomogeneousFltVector;
+
+  PAffineVector = ^TAffineVector;
+  TAffineVector = TAffineFltVector;
+
+  // arrays of vectors
+  PVectorArray = ^TVectorArray;
+  TVectorArray = array[0..0] of TAffineVector;
+
+  // matrices
+  THomogeneousByteMatrix = array[0..3] of THomogeneousByteVector;
+  TMatrix4b = THomogeneousByteMatrix;
+
+  THomogeneousWordMatrix = array[0..3] of THomogeneousWordVector;
+  TMatrix4w = THomogeneousWordMatrix;
+
+  THomogeneousIntMatrix = array[0..3] of THomogeneousIntVector;
+  TMatrix4i = THomogeneousIntMatrix;
+
+  THomogeneousFltMatrix  = array[0..3] of THomogeneousFltVector;
+  TMatrix4f = THomogeneousFltMatrix;
+
+  THomogeneousDblMatrix = array[0..3] of THomogeneousDblVector;
+  TMatrix4d = THomogeneousDblMatrix;
+
+  THomogeneousExtMatrix = array[0..3] of THomogeneousExtVector;
+  TMatrix4e = THomogeneousExtMatrix;
+
+  TAffineByteMatrix = array[0..2] of TAffineByteVector;
+  TMatrix3b = TAffineByteMatrix;
+
+  TAffineWordMatrix = array[0..2] of TAffineWordVector;
+  TMatrix3w = TAffineWordMatrix;
+
+  TAffineIntMatrix = array[0..2] of TAffineIntVector;
+  TMatrix3i = TAffineIntMatrix;
+
+  TAffineFltMatrix = array[0..2] of TAffineFltVector;
+  TMatrix3f = TAffineFltMatrix;
+
+  TAffineDblMatrix = array[0..2] of TAffineDblVector;
+  TMatrix3d = TAffineDblMatrix;
+
+  TAffineExtMatrix = array[0..2] of TAffineExtVector;
+  TMatrix3e = TAffineExtMatrix;
+
+  // some simplified names
+  PMatrix = ^TMatrix;
+  TMatrix = THomogeneousFltMatrix;
+
+  PHomogeneousMatrix = ^THomogeneousMatrix;
+  THomogeneousMatrix = THomogeneousFltMatrix;
+
+  PAffineMatrix = ^TAffineMatrix;
+  TAffineMatrix = TAffineFltMatrix;
+
+  // q = ([x, y, z], w)
+  TQuaternion = record
+    case Integer of
+      0:
+        (ImagPart: TAffineVector;
+         RealPart: Single);
+      1:
+        (Vector: TVector4f);
+  end;
+
+  TRectangle = record
+    Left,
+    Top,
+    Width,
+    Height: Integer;
+  end;
+
+  TTransType = (ttScaleX, ttScaleY, ttScaleZ,
+                ttShearXY, ttShearXZ, ttShearYZ,
+                ttRotateX, ttRotateY, ttRotateZ,
+                ttTranslateX, ttTranslateY, ttTranslateZ,
+                ttPerspectiveX, ttPerspectiveY, ttPerspectiveZ, ttPerspectiveW);
+
+  // used to describe a sequence of transformations in following order:
+  // [Sx][Sy][Sz][ShearXY][ShearXZ][ShearZY][Rx][Ry][Rz][Tx][Ty][Tz][P(x,y,z,w)]
+  // constants are declared for easier access (see MatrixDecompose below)
+  TTransformations  = array[TTransType] of Single;
+
+
+const
+  // useful constants
+
+  // standard vectors
+  XVector: TAffineVector = (1, 0, 0);
+  YVector: TAffineVector = (0, 1, 0);
+  ZVector: TAffineVector = (0, 0, 1);
+  NullVector: TAffineVector = (0, 0, 0);
+
+  IdentityMatrix: TMatrix = ((1, 0, 0, 0),
+                             (0, 1, 0, 0),
+                             (0, 0, 1, 0),
+                             (0, 0, 0, 1));
+  EmptyMatrix: TMatrix = ((0, 0, 0, 0),
+                          (0, 0, 0, 0),
+                          (0, 0, 0, 0),
+                          (0, 0, 0, 0));
+  // some very small numbers
+  EPSILON  = 1e-100;
+  EPSILON2 = 1e-50;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+// vector functions
+function  VectorAdd(V1, V2: TVector): TVector;
+function  VectorAffineAdd(V1, V2: TAffineVector): TAffineVector;
+function  VectorAffineCombine(V1, V2: TAffineVector; F1, F2: Single): TAffineVector;
+function  VectorAffineDotProduct(V1, V2: TAffineVector): Single;
+function  VectorAffineLerp(V1, V2: TAffineVector; t: Single): TAffineVector;
+function  VectorAffineSubtract(V1, V2: TAffineVector): TAffineVector;
+function  VectorAngle(V1, V2: TAffineVector): Single;
+function  VectorCombine(V1, V2: TVector; F1, F2: Single): TVector;
+function  VectorCrossProduct(V1, V2: TAffineVector): TAffineVector;
+function  VectorDotProduct(V1, V2: TVector): Single;
+function  VectorLength(V: array of Single): Single;
+function  VectorLerp(V1, V2: TVector; t: Single): TVector;
+procedure VectorNegate(V: array of Single);
+function  VectorNorm(V: array of Single): Single;
+function  VectorNormalize(V: array of Single): Single;
+function  VectorPerpendicular(V, N: TAffineVector): TAffineVector;
+function  VectorReflect(V, N: TAffineVector): TAffineVector;
+procedure VectorRotate(var Vector: TVector4f; Axis: TVector3f; Angle: Single);
+procedure VectorScale(V: array of Single; Factor: Single);
+function  VectorSubtract(V1, V2: TVector): TVector;
+
+// matrix functions
+function  CreateRotationMatrixX(Sine, Cosine: Single): TMatrix;
+function  CreateRotationMatrixY(Sine, Cosine: Single): TMatrix;
+function  CreateRotationMatrixZ(Sine, Cosine: Single): TMatrix;
+function  CreateScaleMatrix(V: TAffineVector): TMatrix;
+function  CreateTranslationMatrix(V: TVector): TMatrix;
+procedure MatrixAdjoint(var M: TMatrix);
+function  MatrixAffineDeterminant(M: TAffineMatrix): Single;
+procedure MatrixAffineTranspose(var M: TAffineMatrix);
+function  MatrixDeterminant(M: TMatrix): Single;
+procedure MatrixInvert(var M: TMatrix);
+function  MatrixMultiply(M1, M2: TMatrix): TMatrix;
+procedure MatrixScale(var M: TMatrix; Factor: Single);
+procedure MatrixTranspose(var M: TMatrix);
+
+// quaternion functions
+function  QuaternionConjugate(Q: TQuaternion): TQuaternion;
+function  QuaternionFromPoints(V1, V2: TAffineVector): TQuaternion;
+function  QuaternionMultiply(qL, qR: TQuaternion): TQuaternion;
+function  QuaternionSlerp(QStart, QEnd: TQuaternion; Spin: Integer; t: Single): TQuaternion;
+function  QuaternionToMatrix(Q: TQuaternion): TMatrix;
+procedure QuaternionToPoints(Q: TQuaternion; var ArcFrom, ArcTo: TAffineVector);
+
+// mixed functions
+function  ConvertRotation(Angles: TAffineVector): TVector;
+function  CreateRotationMatrix(Axis: TVector3f; Angle: Single): TMatrix;
+function  MatrixDecompose(M: TMatrix; var Tran: TTransformations): Boolean;
+function  VectorAffineTransform(V: TAffineVector; M: TAffineMatrix): TAffineVector;
+function  VectorTransform(V: TVector4f; M: TMatrix): TVector4f; overload;
+function  VectorTransform(V: TVector3f; M: TMatrix): TVector3f; overload;
+
+// miscellaneous functions
+function  MakeAffineDblVector(V: array of Double): TAffineDblVector;
+function  MakeDblVector(V: array of Double): THomogeneousDblVector;
+function  MakeAffineVector(V: array of Single): TAffineVector;
+function  MakeQuaternion(Imag: array of Single; Real: Single): TQuaternion;
+function  MakeVector(V: array of Single): TVector;
+function  PointInPolygon(xp, yp : array of Single; x, y: Single): Boolean;
+function  VectorAffineDblToFlt(V: TAffineDblVector): TAffineVector;
+function  VectorDblToFlt(V: THomogeneousDblVector): THomogeneousVector;
+function  VectorAffineFltToDbl(V: TAffineVector): TAffineDblVector;
+function  VectorFltToDbl(V: TVector): THomogeneousDblVector;
+
+// trigonometric functions
+function  ArcCos(X: Extended): Extended;
+function  ArcSin(X: Extended): Extended;
+function  ArcTan2(Y, X: Extended): Extended;
+function  CoTan(X: Extended): Extended;
+function  DegToRad(Degrees: Extended): Extended;
+function  RadToDeg(Radians: Extended): Extended;
+procedure SinCos(Theta: Extended; var Sin, Cos: Extended);
+function  Tan(X: Extended): Extended;
+
+// coordinate system manipulation functions
+function Turn(Matrix: TMatrix; Angle: Single): TMatrix; overload;
+function Turn(Matrix: TMatrix; MasterUp: TAffineVector; Angle: Single): TMatrix; overload;
+function Pitch(Matrix: TMatrix; Angle: Single): TMatrix; overload;
+function Pitch(Matrix: TMatrix; MasterRight: TAffineVector; Angle: Single): TMatrix; overload;
+function Roll(Matrix: TMatrix; Angle: Single): TMatrix; overload;
+function Roll(Matrix: TMatrix; MasterDirection: TAffineVector; Angle: Single): TMatrix; overload;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+implementation
+
+const
+  // FPU status flags (high order byte)
+  C0 = 1;
+  C1 = 2;
+  C2 = 4;
+  C3 = $40;
+
+  // to be used as descriptive indices
+  X = 0;
+  Y = 1;
+  Z = 2;
+  W = 3;
+
+//----------------- trigonometric helper functions ---------------------------------------------------------------------
+
+function DegToRad(Degrees: Extended): Extended;
+
+begin
+  Result := Degrees * (PI / 180);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function RadToDeg(Radians: Extended): Extended;
+
+begin
+  Result := Radians * (180 / PI);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure SinCos(Theta: Extended; var Sin, Cos: Extended); assembler; register;
+
+// calculates sine and cosine from the given angle Theta
+// EAX contains address of Sin
+// EDX contains address of Cos
+// Theta is passed over the stack
+
+asm
+              FLD  Theta
+              FSINCOS
+              FSTP TBYTE PTR [EDX]    // cosine
+              FSTP TBYTE PTR [EAX]    // sine
+              FWAIT
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function ArcCos(X: Extended): Extended;
+
+begin
+  Result := ArcTan2(Sqrt(1 - X * X), X);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function ArcSin(X: Extended): Extended;
+
+begin
+  Result := ArcTan2(X, Sqrt(1 - X * X))
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function ArcTan2(Y, X: Extended): Extended;
+
+asm
+              FLD  Y
+              FLD  X
+              FPATAN
+              FWAIT
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Tan(X: Extended): Extended;
+
+asm
+              FLD  X
+              FPTAN
+              FSTP ST(0)      // FPTAN pushes 1.0 after result
+              FWAIT
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CoTan(X: Extended): Extended;
+
+asm
+              FLD  X
+              FPTAN
+              FDIVRP
+              FWAIT
+end;
+
+//----------------- miscellaneous vector functions ---------------------------------------------------------------------
+
+function MakeAffineDblVector(V: array of Double): TAffineDblVector; assembler;
+
+// creates a vector from given values
+// EAX contains address of V
+// ECX contains address to result vector
+// EDX contains highest index of V
+
+asm
+              PUSH EDI
+              PUSH ESI
+              MOV EDI, ECX
+              MOV ESI, EAX
+              MOV ECX, EDX
+              ADD ECX, 2
+              REP MOVSD
+              POP ESI
+              POP EDI
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MakeDblVector(V: array of Double): THomogeneousDblVector; assembler;
+
+// creates a vector from given values
+// EAX contains address of V
+// ECX contains address to result vector
+// EDX contains highest index of V
+
+asm
+              PUSH EDI
+              PUSH ESI
+              MOV EDI, ECX
+              MOV ESI, EAX
+              MOV ECX, EDX
+              ADD ECX, 2
+              REP MOVSD
+              POP ESI
+              POP EDI
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MakeAffineVector(V: array of Single): TAffineVector; assembler;
+
+// creates a vector from given values
+// EAX contains address of V
+// ECX contains address to result vector
+// EDX contains highest index of V
+
+asm
+              PUSH EDI
+              PUSH ESI
+              MOV EDI, ECX
+              MOV ESI, EAX
+              MOV ECX, EDX
+              INC ECX
+              CMP ECX, 3
+              JB  @@1
+              MOV ECX, 3
+@@1:          REP MOVSD                     // copy given values
+              MOV ECX, 2
+              SUB ECX, EDX                   // determine missing entries
+              JS  @@Finish
+              XOR EAX, EAX
+              REP STOSD                     // set remaining fields to 0
+@@Finish:     POP ESI
+              POP EDI
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MakeQuaternion(Imag: array of Single; Real: Single): TQuaternion; assembler;
+
+// creates a quaternion from the given values
+// EAX contains address of Imag
+// ECX contains address to result vector
+// EDX contains highest index of Imag
+// Real part is passed on the stack
+
+asm
+              PUSH EDI
+              PUSH ESI
+              MOV EDI, ECX
+              MOV ESI, EAX
+              MOV ECX, EDX
+              INC ECX
+              REP MOVSD
+              MOV EAX, [Real]
+              MOV [EDI], EAX
+              POP ESI
+              POP EDI
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MakeVector(V: array of Single): TVector; assembler;
+
+// creates a vector from given values
+// EAX contains address of V
+// ECX contains address to result vector
+// EDX contains highest index of V
+
+asm
+              PUSH EDI
+              PUSH ESI
+              MOV EDI, ECX
+              MOV ESI, EAX
+              MOV ECX, EDX
+              INC ECX
+              CMP ECX, 4
+              JB  @@1
+              MOV ECX, 4
+@@1:          REP MOVSD                     // copy given values
+              MOV ECX, 3
+              SUB ECX, EDX                   // determine missing entries
+              JS  @@Finish
+              XOR EAX, EAX
+              REP STOSD                     // set remaining fields to 0
+@@Finish:     POP ESI
+              POP EDI
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorLength(V: array of Single): Single; assembler;
+
+// calculates the length of a vector following the equation: sqrt(x * x + y * y + ...)
+// Note: The parameter of this function is declared as open array. Thus
+// there's no restriction about the number of the components of the vector.
+//
+// EAX contains address of V
+// EDX contains the highest index of V
+// the result is returned in ST(0)
+
+asm
+              FLDZ                           // initialize sum
+@@Loop:       FLD  DWORD PTR [EAX  +  4 * EDX] // load a component
+              FMUL ST, ST
+              FADDP
+              SUB  EDX, 1
+              JNL  @@Loop
+              FSQRT
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAngle(V1, V2: TAffineVector): Single; assembler;
+
+// calculates the cosine of the angle between Vector1 and Vector2
+// Result = DotProduct(V1, V2) / (Length(V1) * Length(V2))
+//
+// EAX contains address of Vector1
+// EDX contains address of Vector2
+
+asm
+              FLD DWORD PTR [EAX]           // V1[0]
+              FLD ST                        // double V1[0]
+              FMUL ST, ST                   // V1[0]^2 (prep. for divisor)
+              FLD DWORD PTR [EDX]           // V2[0]
+              FMUL ST(2), ST                // ST(2) := V1[0] * V2[0]
+              FMUL ST, ST                   // V2[0]^2 (prep. for divisor)
+              FLD DWORD PTR [EAX + 4]       // V1[1]
+              FLD ST                        // double V1[1]
+              FMUL ST, ST                   // ST(0) := V1[1]^2
+              FADDP ST(3), ST               // ST(2) := V1[0]^2 + V1[1] *  * 2
+              FLD DWORD PTR [EDX + 4]       // V2[1]
+              FMUL ST(1), ST                // ST(1) := V1[1] * V2[1]
+              FMUL ST, ST                   // ST(0) := V2[1]^2
+              FADDP ST(2), ST               // ST(1) := V2[0]^2 + V2[1]^2
+              FADDP ST(3), ST               // ST(2) := V1[0] * V2[0] + V1[1] * V2[1]
+              FLD DWORD PTR [EAX + 8]       // load V2[1]
+              FLD ST                        // same calcs go here
+              FMUL ST, ST                   // (compare above)
+              FADDP ST(3), ST
+              FLD DWORD PTR [EDX + 8]
+              FMUL ST(1), ST
+              FMUL ST, ST
+              FADDP ST(2), ST
+              FADDP ST(3), ST
+              FMULP                         // ST(0) := (V1[0]^2 + V1[1]^2 + V1[2]) *
+                                            //          (V2[0]^2 + V2[1]^2 + V2[2])
+              FSQRT                         // sqrt(ST(0))
+              FDIVP                         // ST(0) := Result := ST(1) / ST(0)
+  // the result is expected in ST(0), if it's invalid, an error is raised
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorNorm(V: array of Single): Single; assembler; register;
+
+// calculates norm of a vector which is defined as norm = x * x + y * y + ...
+// EAX contains address of V
+// EDX contains highest index in V
+// result is passed in ST(0)
+
+asm
+              FLDZ                           // initialize sum
+@@Loop:       FLD  DWORD PTR [EAX + 4 * EDX] // load a component
+              FMUL ST, ST                    // make square
+              FADDP                          // add previous calculated sum
+              SUB  EDX, 1
+              JNL  @@Loop
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorNormalize(V: array of Single): Single; assembler; register;
+
+// transforms a vector to unit length and return length
+// EAX contains address of V
+// EDX contains the highest index in V
+// return former length of V in ST
+
+asm
+              PUSH EBX
+              MOV ECX, EDX                  // save size of V
+              CALL VectorLength             // calculate length of vector
+              FTST                          // test if length = 0
+              MOV EBX, EAX                  // save parameter address
+              FSTSW AX                      // get test result
+              TEST AH, C3                   // check the test result
+              JNZ @@Finish
+              SUB EBX, 4                    // simplyfied address calculation
+              INC ECX
+              FLD1                          // calculate reciprocal of length
+              FDIV ST, ST(1)
+@@1:          FLD ST                        // double reciprocal
+              FMUL DWORD PTR [EBX + 4 * ECX] // scale component
+              WAIT
+              FSTP DWORD PTR [EBX + 4 * ECX] // store result
+              LOOP @@1
+              FSTP ST                       // remove reciprocal from FPU stack
+@@Finish:     POP EBX
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineSubtract(V1, V2: TAffineVector): TAffineVector; assembler; register;
+
+// returns v1 minus v2
+// EAX contains address of V1
+// EDX contains address of V2
+// ECX contains address of the result
+
+asm
+  {Result[X] := V1[X]-V2[X];
+  Result[Y] := V1[Y]-V2[Y];
+  Result[Z] := V1[Z]-V2[Z];}
+
+                   FLD DWORD PTR [EAX]
+                   FSUB DWORD PTR [EDX]
+                   FSTP DWORD PTR [ECX]
+                   FLD DWORD PTR [EAX + 4]
+                   FSUB DWORD PTR [EDX + 4]
+                   FSTP DWORD PTR [ECX + 4]
+                   FLD DWORD PTR [EAX + 8]
+                   FSUB DWORD PTR [EDX + 8]
+                   FSTP DWORD PTR [ECX + 8]
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorReflect(V, N: TAffineVector): TAffineVector; assembler; register;
+
+// reflects vector V against N (assumes N is normalized)
+// EAX contains address of V
+// EDX contains address of N
+// ECX contains address of the result
+
+//var Dot : Single;
+
+asm
+   {Dot := VectorAffineDotProduct(V, N);
+   Result[X] := V[X]-2 * Dot * N[X];
+   Result[Y] := V[Y]-2 * Dot * N[Y];
+   Result[Z] := V[Z]-2 * Dot * N[Z];}
+
+                   CALL VectorAffineDotProduct   // dot is now in ST(0)
+                   FCHS                          // -dot
+                   FADD ST, ST                   // -dot * 2
+                   FLD DWORD PTR [EDX]           // ST := N[X]
+                   FMUL ST, ST(1)                // ST := -2 * dot * N[X]
+                   FADD DWORD PTR[EAX]           // ST := V[X] - 2 * dot * N[X]
+                   FSTP DWORD PTR [ECX]          // store result
+                   FLD DWORD PTR [EDX + 4]       // etc.
+                   FMUL ST, ST(1)
+                   FADD DWORD PTR[EAX + 4]
+                   FSTP DWORD PTR [ECX + 4]
+                   FLD DWORD PTR [EDX + 8]
+                   FMUL ST, ST(1)
+                   FADD DWORD PTR[EAX + 8]
+                   FSTP DWORD PTR [ECX + 8]
+                   FSTP ST                       // clean FPU stack
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure VectorRotate(var Vector: TVector4f; Axis: TVector3f; Angle: Single);
+
+// rotates Vector about Axis with Angle radiants
+
+var RotMatrix : TMatrix4f;
+
+begin
+  RotMatrix := CreateRotationMatrix(Axis, Angle);
+  Vector := VectorTransform(Vector, RotMatrix);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure VectorScale(V: array of Single; Factor: Single); assembler; register;
+
+// returns a vector scaled by a factor
+// EAX contains address of V
+// EDX contains highest index in V
+// Factor is located on the stack
+
+asm
+  {for I := Low(V) to High(V) do V[I] := V[I] * Factor;}
+
+              FLD DWORD PTR [Factor]        // load factor
+@@Loop:       FLD DWORD PTR [EAX + 4 * EDX] // load a component
+              FMUL ST, ST(1)                // multiply it with the factor
+              WAIT
+              FSTP DWORD PTR [EAX + 4 * EDX] // store the result
+              DEC EDX                       // do the entire array
+              JNS @@Loop
+              FSTP ST(0)                    // clean the FPU stack
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure VectorNegate(V: array of Single); assembler; register;
+
+// returns a negated vector
+// EAX contains address of V
+// EDX contains highest index in V
+
+asm
+  {V[X] := -V[X];
+  V[Y] := -V[Y];
+  V[Z] := -V[Z];}
+
+@@Loop:       FLD DWORD PTR [EAX + 4 * EDX]
+              FCHS
+              WAIT
+              FSTP DWORD PTR [EAX + 4 * EDX]
+              DEC EDX
+              JNS @@Loop
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAdd(V1, V2: TVector): TVector; register;
+
+// returns the sum of two vectors
+
+begin
+  Result[X] := V1[X] + V2[X];
+  Result[Y] := V1[Y] + V2[Y];
+  Result[Z] := V1[Z] + V2[Z];
+  Result[W] := V1[W] + V2[W];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineAdd(V1, V2: TAffineVector): TAffineVector; register;
+
+// returns the sum of two vectors
+
+begin
+  Result[X] := V1[X] + V2[X];
+  Result[Y] := V1[Y] + V2[Y];
+  Result[Z] := V1[Z] + V2[Z];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorSubtract(V1, V2: TVector): TVector; register;
+
+// returns the difference of two vectors
+
+begin
+  Result[X] := V1[X] - V2[X];
+  Result[Y] := V1[Y] - V2[Y];
+  Result[Z] := V1[Z] - V2[Z];
+  Result[W] := V1[W] - V2[W];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorDotProduct(V1, V2: TVector): Single; register;
+
+begin
+  Result := V1[X] * V2[X] + V1[Y] * V2[Y] + V1[Z] * V2[Z] + V1[W] * V2[W];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineDotProduct(V1, V2: TAffineVector): Single; assembler; register;
+
+// calculates the dot product between V1 and V2
+// EAX contains address of V1
+// EDX contains address of V2
+// result is stored in ST(0)
+
+asm
+  //Result := V1[X] * V2[X] + V1[Y] * V2[Y] + V1[Z] * V2[Z];
+
+                   FLD DWORD PTR [EAX]
+                   FMUL DWORD PTR [EDX]
+                   FLD DWORD PTR [EAX + 4]
+                   FMUL DWORD PTR [EDX + 4]
+                   FADDP
+                   FLD DWORD PTR [EAX + 8]
+                   FMUL DWORD PTR [EDX + 8]
+                   FADDP
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorCrossProduct(V1, V2: TAffineVector): TAffineVector;
+
+// calculates the cross product between vector 1 and 2, Temp is necessary because
+// either V1 or V2 could also be the result vector
+//
+// EAX contains address of V1
+// EDX contains address of V2
+// ECX contains address of result
+
+var Temp: TAffineVector;
+
+asm
+  {Temp[X] := V1[Y] * V2[Z]-V1[Z] * V2[Y];
+  Temp[Y] := V1[Z] * V2[X]-V1[X] * V2[Z];
+  Temp[Z] := V1[X] * V2[Y]-V1[Y] * V2[X];
+  Result := Temp;}
+
+              PUSH EBX                      // save EBX, must be restored to original value
+              LEA EBX, [Temp]
+              FLD DWORD PTR [EDX + 8]       // first load both vectors onto FPU register stack
+              FLD DWORD PTR [EDX + 4]
+              FLD DWORD PTR [EDX + 0]
+              FLD DWORD PTR [EAX + 8]
+              FLD DWORD PTR [EAX + 4]
+              FLD DWORD PTR [EAX + 0]
+
+              FLD ST(1)                     // ST(0) := V1[Y]
+              FMUL ST, ST(6)                // ST(0) := V1[Y] * V2[Z]
+              FLD ST(3)                     // ST(0) := V1[Z]
+              FMUL ST, ST(6)                // ST(0) := V1[Z] * V2[Y]
+              FSUBP ST(1), ST               // ST(0) := ST(1)-ST(0)
+              FSTP DWORD [EBX]              // Temp[X] := ST(0)
+              FLD ST(2)                     // ST(0) := V1[Z]
+              FMUL ST, ST(4)                // ST(0) := V1[Z] * V2[X]
+              FLD ST(1)                     // ST(0) := V1[X]
+              FMUL ST, ST(7)                // ST(0) := V1[X] * V2[Z]
+              FSUBP ST(1), ST               // ST(0) := ST(1)-ST(0)
+              FSTP DWORD [EBX + 4]          // Temp[Y] := ST(0)
+              FLD ST                        // ST(0) := V1[X]
+              FMUL ST, ST(5)                // ST(0) := V1[X] * V2[Y]
+              FLD ST(2)                     // ST(0) := V1[Y]
+              FMUL ST, ST(5)                // ST(0) := V1[Y] * V2[X]
+              FSUBP ST(1), ST               // ST(0) := ST(1)-ST(0)
+              FSTP DWORD [EBX + 8]          // Temp[Z] := ST(0)
+              FSTP ST(0)                    // clear FPU register stack
+              FSTP ST(0)
+              FSTP ST(0)
+              FSTP ST(0)
+              FSTP ST(0)
+              FSTP ST(0)
+              MOV EAX, [EBX]                // copy Temp to Result
+              MOV [ECX], EAX
+              MOV EAX, [EBX + 4]
+              MOV [ECX + 4], EAX
+              MOV EAX, [EBX + 8]
+              MOV [ECX + 8], EAX
+              POP EBX
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorPerpendicular(V, N: TAffineVector): TAffineVector;
+
+// calculates a vector perpendicular to N (N is assumed to be of unit length)
+// subtract out any component parallel to N
+
+var Dot: Single;
+
+begin
+   Dot := VectorAffineDotProduct(V, N);
+   Result[X] := V[X]-Dot * N[X];
+   Result[Y] := V[Y]-Dot * N[Y];
+   Result[Z] := V[Z]-Dot * N[Z];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorTransform(V: TVector4f; M: TMatrix): TVector4f; register;
+
+// transforms a homogeneous vector by multiplying it with a matrix
+
+var TV: TVector4f;
+
+begin
+  TV[X] := V[X] * M[X, X] + V[Y] * M[Y, X] + V[Z] * M[Z, X] + V[W] * M[W, X];
+  TV[Y] := V[X] * M[X, Y] + V[Y] * M[Y, Y] + V[Z] * M[Z, Y] + V[W] * M[W, Y];
+  TV[Z] := V[X] * M[X, Z] + V[Y] * M[Y, Z] + V[Z] * M[Z, Z] + V[W] * M[W, Z];
+  TV[W] := V[X] * M[X, W] + V[Y] * M[Y, W] + V[Z] * M[Z, W] + V[W] * M[W, W];
+  Result := TV
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function  VectorTransform(V: TVector3f; M: TMatrix): TVector3f;
+
+// transforms an affine vector by multiplying it with a (homogeneous) matrix
+
+var TV: TVector3f;
+
+begin
+  TV[X] := V[X] * M[X, X] + V[Y] * M[Y, X] + V[Z] * M[Z, X] + M[W, X];
+  TV[Y] := V[X] * M[X, Y] + V[Y] * M[Y, Y] + V[Z] * M[Z, Y] + M[W, Y];
+  TV[Z] := V[X] * M[X, Z] + V[Y] * M[Y, Z] + V[Z] * M[Z, Z] + M[W, Z];
+  Result := TV;
+end;
+
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineTransform(V: TAffineVector; M: TAffineMatrix): TAffineVector; register;
+
+// transforms an affine vector by multiplying it with a matrix
+
+var TV: TAffineVector;
+
+begin
+  TV[X] := V[X] * M[X, X] + V[Y] * M[Y, X] + V[Z] * M[Z, X];
+  TV[Y] := V[X] * M[X, Y] + V[Y] * M[Y, Y] + V[Z] * M[Z, Y];
+  TV[Z] := V[X] * M[X, Z] + V[Y] * M[Y, Z] + V[Z] * M[Z, Z];
+  Result := TV;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function PointInPolygon(xp, yp : array of Single; x, y: Single): Boolean;
+
+// The code below is from Wm. Randolph Franklin <wrf@ecse.rpi.edu>
+// with some minor modifications for speed.  It returns 1 for strictly
+// interior points, 0 for strictly exterior, and 0 or 1 for points on
+// the boundary.
+// This code is not yet tested!
+
+var I, J: Integer;
+
+begin
+  Result := False;
+  if High(XP) <> High(YP) then Exit;
+  J := High(XP);
+  for I := 0 to High(XP) do
+  begin
+    if ((((yp[I] <= y) and (y < yp[J])) or ((yp[J] <= y) and (y < yp[I]))) and
+        (x < (xp[J] - xp[I]) * (y - yp[I]) / (yp[J] - yp[I]) + xp[I]))
+    then Result := not Result;
+    J := I + 1;
+  end;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function QuaternionConjugate(Q: TQuaternion): TQuaternion; assembler;
+
+// returns the conjugate of a quaternion
+// EAX contains address of Q
+// EDX contains address of result
+
+asm
+              FLD DWORD PTR [EAX]
+              FCHS
+              WAIT
+              FSTP DWORD PTR [EDX]
+              FLD DWORD PTR [EAX + 4]
+              FCHS
+              WAIT
+              FSTP DWORD PTR [EDX + 4]
+              FLD DWORD PTR [EAX + 8]
+              FCHS
+              WAIT
+              FSTP DWORD PTR [EDX + 8]
+              MOV EAX, [EAX + 12]
+              MOV [EDX + 12], EAX
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function QuaternionFromPoints(V1, V2: TAffineVector): TQuaternion; assembler;
+
+// constructs a unit quaternion from two points on unit sphere
+// EAX contains address of V1
+// ECX contains address to result
+// EDX contains address of V2
+
+asm
+  {Result.ImagPart := VectorCrossProduct(V1, V2);
+   Result.RealPart :=  Sqrt((VectorAffineDotProduct(V1, V2) + 1)/2);}
+
+              PUSH EAX
+              CALL VectorCrossProduct       // determine axis to rotate about
+              POP EAX
+              FLD1                          // prepare next calculation
+              Call VectorAffineDotProduct   // calculate cos(angle between V1 and V2)
+              FADD ST, ST(1)                // transform angle to angle/2 by: cos(a/2)=sqrt((1 + cos(a))/2)
+              FXCH ST(1)
+              FADD ST, ST
+              FDIVP ST(1), ST
+              FSQRT
+              FSTP DWORD PTR [ECX + 12]     // Result.RealPart := ST(0)
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function QuaternionMultiply(qL, qR: TQuaternion): TQuaternion;
+
+// Returns quaternion product qL * qR.  Note: order is important!
+// To combine rotations, use the product QuaternionMuliply(qSecond, qFirst),
+// which gives the effect of rotating by qFirst then qSecond.
+
+var Temp : TQuaternion;
+
+begin
+  Temp.RealPart := qL.RealPart * qR.RealPart - qL.ImagPart[X] * qR.ImagPart[X] -
+                   qL.ImagPart[Y] * qR.ImagPart[Y] - qL.ImagPart[Z] * qR.ImagPart[Z];
+  Temp.ImagPart[X] := qL.RealPart * qR.ImagPart[X] + qL.ImagPart[X] * qR.RealPart +
+                      qL.ImagPart[Y] * qR.ImagPart[Z] - qL.ImagPart[Z] * qR.ImagPart[Y];
+  Temp.ImagPart[Y] := qL.RealPart * qR.ImagPart[Y] + qL.ImagPart[Y] * qR.RealPart +
+                      qL.ImagPart[Z] * qR.ImagPart[X] - qL.ImagPart[X] * qR.ImagPart[Z];
+  Temp.ImagPart[Z] := qL.RealPart * qR.ImagPart[Z] + qL.ImagPart[Z] * qR.RealPart +
+                      qL.ImagPart[X] * qR.ImagPart[Y] - qL.ImagPart[Y] * qR.ImagPart[X];
+  Result := Temp;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function QuaternionToMatrix(Q: TQuaternion): TMatrix;
+
+// Constructs rotation matrix from (possibly non-unit) quaternion.
+// Assumes matrix is used to multiply column vector on the left:
+// vnew = mat vold.  Works correctly for right-handed coordinate system
+// and right-handed rotations.
+
+// Essentially, this function is the same as CreateRotationMatrix and you can consider it as
+// being for reference here.
+
+{var Norm, S,
+    XS, YS, ZS,
+    WX, WY, WZ,
+    XX, XY, XZ,
+    YY, YZ, ZZ   : Single;
+
+begin
+  Norm := Q.Vector[X] * Q.Vector[X] + Q.Vector[Y] * Q.Vector[Y] + Q.Vector[Z] * Q.Vector[Z] + Q.RealPart * Q.RealPart;
+  if Norm > 0 then S := 2 / Norm
+              else S := 0;
+
+  XS := Q.Vector[X] * S;   YS := Q.Vector[Y] * S;   ZS := Q.Vector[Z] * S;
+  WX := Q.RealPart * XS;   WY := Q.RealPart * YS;   WZ := Q.RealPart * ZS;
+  XX := Q.Vector[X] * XS;  XY := Q.Vector[X] * YS;  XZ := Q.Vector[X] * ZS;
+  YY := Q.Vector[Y] * YS;  YZ := Q.Vector[Y] * ZS;  ZZ := Q.Vector[Z] * ZS;
+
+  Result[X, X] := 1 - (YY + ZZ); Result[Y, X] := XY + WZ;       Result[Z, X] := XZ - WY;       Result[W, X] := 0;
+  Result[X, Y] := XY - WZ;       Result[Y, Y] := 1 - (XX + ZZ); Result[Z, Y] := YZ + WX;       Result[W, Y] := 0;
+  Result[X, Z] := XZ + WY;       Result[Y, Z] := YZ - WX;       Result[Z, Z] := 1 - (XX + YY); Result[W, Z] := 0;
+  Result[X, W] := 0;             Result[Y, W] := 0;             Result[Z, W] := 0;             Result[W, W] := 1;}
+
+var
+  V: TAffineVector;
+  SinA, CosA,
+  A, B, C: Extended;
+
+begin
+  V := Q.ImagPart;
+  VectorNormalize(V);
+  SinCos(Q.RealPart / 2, SinA, CosA);
+  A := V[X] * SinA;
+  B := V[Y] * SinA;
+  C := V[Z] * SinA;
+
+  Result := IdentityMatrix;
+  Result[X, X] := 1 - 2 * B * B - 2 * C * C;
+  Result[X, Y] := 2 * A * B - 2 * CosA * C;
+  Result[X, Z] := 2 * A * C + 2 * CosA * B;
+
+  Result[Y, X] := 2 * A * B + 2 * CosA * C;
+  Result[Y, Y] := 1 - 2 * A * A - 2 * C * C;
+  Result[Y, Z] := 2 * B * C - 2 * CosA * A;
+
+  Result[Z, X] := 2 * A * C - 2 * CosA * B;
+  Result[Z, Y] := 2 * B * C + 2 * CosA * A;
+  Result[Z, Z] := 1 - 2 * A * A - 2 * B * B;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure QuaternionToPoints(Q: TQuaternion; var ArcFrom, ArcTo: TAffineVector); register;
+
+// converts a unit quaternion into two points on a unit sphere
+
+var S: Single;
+
+begin
+  S := Sqrt(Q.ImagPart[X] * Q.ImagPart[X] + Q.ImagPart[Y] * Q.ImagPart[Y]);
+  if S = 0 then ArcFrom := MakeAffineVector([0, 1, 0])
+           else ArcFrom := MakeAffineVector([-Q.ImagPart[Y] / S, Q.ImagPart[X] / S, 0]);
+  ArcTo[X] := Q.RealPart * ArcFrom[X] - Q.ImagPart[Z] * ArcFrom[Y];
+  ArcTo[Y] := Q.RealPart * ArcFrom[Y] + Q.ImagPart[Z] * ArcFrom[X];
+  ArcTo[Z] := Q.ImagPart[X] * ArcFrom[Y] - Q.ImagPart[Y] * ArcFrom[X];
+  if Q.RealPart < 0 then ArcFrom := MakeAffineVector([-ArcFrom[X], -ArcFrom[Y], 0]);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MatrixAffineDeterminant(M: TAffineMatrix): Single; register;
+
+// determinant of a 3x3 matrix
+
+begin
+  Result := M[X, X] * (M[Y, Y] * M[Z, Z] - M[Z, Y] * M[Y, Z]) -
+            M[X, Y] * (M[Y, X] * M[Z, Z] - M[Z, X] * M[Y, Z]) +
+            M[X, Z] * (M[Y, X] * M[Z, Y] - M[Z, X] * M[Y, Y]);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MatrixDetInternal(a1, a2, a3, b1, b2, b3, c1, c2, c3: Single): Single;
+
+// internal version for the determinant of a 3x3 matrix
+
+begin
+  Result := a1 * (b2 * c3 - b3 * c2) -
+            b1 * (a2 * c3 - a3 * c2) +
+            c1 * (a2 * b3 - a3 * b2);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure MatrixAdjoint(var M: TMatrix); register;
+
+// Adjoint of a 4x4 matrix - used in the computation of the inverse
+// of a 4x4 matrix
+
+var a1, a2, a3, a4,
+    b1, b2, b3, b4,
+    c1, c2, c3, c4,
+    d1, d2, d3, d4: Single;
+
+
+begin
+    a1 :=  M[X, X]; b1 :=  M[X, Y];
+    c1 :=  M[X, Z]; d1 :=  M[X, W];
+    a2 :=  M[Y, X]; b2 :=  M[Y, Y];
+    c2 :=  M[Y, Z]; d2 :=  M[Y, W];
+    a3 :=  M[Z, X]; b3 :=  M[Z, Y];
+    c3 :=  M[Z, Z]; d3 :=  M[Z, W];
+    a4 :=  M[W, X]; b4 :=  M[W, Y];
+    c4 :=  M[W, Z]; d4 :=  M[W, W];
+
+    // row column labeling reversed since we transpose rows & columns
+    M[X, X] :=  MatrixDetInternal(b2, b3, b4, c2, c3, c4, d2, d3, d4);
+    M[Y, X] := -MatrixDetInternal(a2, a3, a4, c2, c3, c4, d2, d3, d4);
+    M[Z, X] :=  MatrixDetInternal(a2, a3, a4, b2, b3, b4, d2, d3, d4);
+    M[W, X] := -MatrixDetInternal(a2, a3, a4, b2, b3, b4, c2, c3, c4);
+
+    M[X, Y] := -MatrixDetInternal(b1, b3, b4, c1, c3, c4, d1, d3, d4);
+    M[Y, Y] :=  MatrixDetInternal(a1, a3, a4, c1, c3, c4, d1, d3, d4);
+    M[Z, Y] := -MatrixDetInternal(a1, a3, a4, b1, b3, b4, d1, d3, d4);
+    M[W, Y] :=  MatrixDetInternal(a1, a3, a4, b1, b3, b4, c1, c3, c4);
+
+    M[X, Z] :=  MatrixDetInternal(b1, b2, b4, c1, c2, c4, d1, d2, d4);
+    M[Y, Z] := -MatrixDetInternal(a1, a2, a4, c1, c2, c4, d1, d2, d4);
+    M[Z, Z] :=  MatrixDetInternal(a1, a2, a4, b1, b2, b4, d1, d2, d4);
+    M[W, Z] := -MatrixDetInternal(a1, a2, a4, b1, b2, b4, c1, c2, c4);
+
+    M[X, W] := -MatrixDetInternal(b1, b2, b3, c1, c2, c3, d1, d2, d3);
+    M[Y, W] :=  MatrixDetInternal(a1, a2, a3, c1, c2, c3, d1, d2, d3);
+    M[Z, W] := -MatrixDetInternal(a1, a2, a3, b1, b2, b3, d1, d2, d3);
+    M[W, W] :=  MatrixDetInternal(a1, a2, a3, b1, b2, b3, c1, c2, c3);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MatrixDeterminant(M: TMatrix): Single; register;
+
+// Determinant of a 4x4 matrix
+
+var a1, a2, a3, a4,
+    b1, b2, b3, b4,
+    c1, c2, c3, c4,
+    d1, d2, d3, d4  : Single;
+
+begin
+  a1 := M[X, X];  b1 := M[X, Y];  c1 := M[X, Z];  d1 := M[X, W];
+  a2 := M[Y, X];  b2 := M[Y, Y];  c2 := M[Y, Z];  d2 := M[Y, W];
+  a3 := M[Z, X];  b3 := M[Z, Y];  c3 := M[Z, Z];  d3 := M[Z, W];
+  a4 := M[W, X];  b4 := M[W, Y];  c4 := M[W, Z];  d4 := M[W, W];
+
+  Result := a1 * MatrixDetInternal(b2, b3, b4, c2, c3, c4, d2, d3, d4) -
+            b1 * MatrixDetInternal(a2, a3, a4, c2, c3, c4, d2, d3, d4) +
+            c1 * MatrixDetInternal(a2, a3, a4, b2, b3, b4, d2, d3, d4) -
+            d1 * MatrixDetInternal(a2, a3, a4, b2, b3, b4, c2, c3, c4);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure MatrixScale(var M: TMatrix; Factor: Single); register;
+
+// multiplies all elements of a 4x4 matrix with a factor
+
+var I, J: Integer;
+
+begin
+  for I := 0 to 3 do
+    for J := 0 to 3 do M[I, J] := M[I, J] * Factor;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure MatrixInvert(var M: TMatrix); register;
+
+// finds the inverse of a 4x4 matrix
+
+var Det: Single;
+
+begin
+  Det := MatrixDeterminant(M);
+  if Abs(Det) < EPSILON then M := IdentityMatrix
+                        else
+  begin
+    MatrixAdjoint(M);
+    MatrixScale(M, 1 / Det);
+  end;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure MatrixTranspose(var M: TMatrix); register;
+
+// computes transpose of 4x4 matrix
+
+var I, J: Integer;
+    TM: TMatrix;
+
+begin
+  for I := 0 to 3 do
+    for J := 0 to 3 do TM[J, I] := M[I, J];
+  M := TM;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+procedure MatrixAffineTranspose(var M: TAffineMatrix); register;
+
+// computes transpose of 3x3 matrix
+
+var I, J: Integer;
+    TM: TAffineMatrix;
+
+begin
+  for I := 0 to 2 do
+    for J := 0 to 2 do TM[J, I] := M[I, J];
+  M := TM;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MatrixMultiply(M1, M2: TMatrix): TMatrix; register;
+
+// multiplies two 4x4 matrices
+
+var I, J: Integer;
+    TM: TMatrix;
+
+begin
+  for I := 0 to 3 do
+    for J := 0 to 3 do
+      TM[I, J] := M1[I, X] * M2[X, J] +
+                  M1[I, Y] * M2[Y, J] +
+                  M1[I, Z] * M2[Z, J] +
+                  M1[I, W] * M2[W, J];
+  Result := TM;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateRotationMatrix(Axis: TVector3f; Angle: Single): TMatrix; register;
+
+// Creates a rotation matrix along the given Axis by the given Angle in radians.
+
+var cosine,
+    sine,
+    Len,
+    one_minus_cosine: Extended;
+
+begin
+  SinCos(Angle, Sine, Cosine);
+  one_minus_cosine := 1 - cosine;
+  Len := VectorNormalize(Axis);
+
+  if Len = 0 then Result := IdentityMatrix
+             else
+  begin
+    Result[X, X] := (one_minus_cosine * Sqr(Axis[0])) + Cosine;
+    Result[X, Y] := (one_minus_cosine * Axis[0] * Axis[1]) - (Axis[2] * Sine);
+    Result[X, Z] := (one_minus_cosine * Axis[2] * Axis[0]) + (Axis[1] * Sine);
+    Result[X, W] := 0;
+
+    Result[Y, X] := (one_minus_cosine * Axis[0] * Axis[1]) + (Axis[2] * Sine);
+    Result[Y, Y] := (one_minus_cosine * Sqr(Axis[1])) + Cosine;
+    Result[Y, Z] := (one_minus_cosine * Axis[1] * Axis[2]) - (Axis[0] * Sine);
+    Result[Y, W] := 0;
+
+    Result[Z, X] := (one_minus_cosine * Axis[2] * Axis[0]) - (Axis[1] * Sine);
+    Result[Z, Y] := (one_minus_cosine * Axis[1] * Axis[2]) + (Axis[0] * Sine);
+    Result[Z, Z] := (one_minus_cosine * Sqr(Axis[2])) + Cosine;
+    Result[Z, W] := 0;
+
+    Result[W, X] := 0;
+    Result[W, Y] := 0;
+    Result[W, Z] := 0;
+    Result[W, W] := 1;
+  end;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function ConvertRotation(Angles: TAffineVector): TVector; register;
+
+{ Turn a triplet of rotations about x, y, and z (in that order) into an
+   equivalent rotation around a single axis (all in radians).
+
+   Rotation of the Angle t about the axis (X, Y, Z) is given by:
+
+     | X^2 + (1-X^2) Cos(t),    XY(1-Cos(t))  +  Z Sin(t), XZ(1-Cos(t))-Y Sin(t) |
+ M = | XY(1-Cos(t))-Z Sin(t), Y^2 + (1-Y^2) Cos(t),      YZ(1-Cos(t)) + X Sin(t) |
+     | XZ(1-Cos(t)) + Y Sin(t), YZ(1-Cos(t))-X Sin(t),   Z^2 + (1-Z^2) Cos(t)    |
+
+   Rotation about the three axes (Angles a1, a2, a3) can be represented as
+   the product of the individual rotation matrices:
+
+      | 1  0       0       | | Cos(a2) 0 -Sin(a2) | |  Cos(a3) Sin(a3) 0 |
+      | 0  Cos(a1) Sin(a1) | * | 0       1  0       | * | -Sin(a3) Cos(a3) 0 |
+      | 0 -Sin(a1) Cos(a1) | | Sin(a2) 0  Cos(a2) | |  0       0       1 |
+	     Mx                       My                     Mz
+
+   We now want to solve for X, Y, Z, and t given 9 equations in 4 unknowns.
+   Using the diagonal elements of the two matrices, we get:
+
+      X^2 + (1-X^2) Cos(t) = M[0][0]
+      Y^2 + (1-Y^2) Cos(t) = M[1][1]
+      Z^2 + (1-Z^2) Cos(t) = M[2][2]
+
+   Adding the three equations, we get:
+
+      X^2  +  Y^2  +  Z^2 - (M[0][0]  +  M[1][1]  +  M[2][2]) =
+	 - (3 - X^2 - Y^2 - Z^2) Cos(t)
+
+   Since (X^2  +  Y^2  +  Z^2) = 1, we can rewrite as:
+
+      Cos(t) = (1 - (M[0][0]  +  M[1][1]  +  M[2][2])) / 2
+
+   Solving for t, we get:
+
+      t = Acos(((M[0][0]  +  M[1][1]  +  M[2][2]) - 1) / 2)
+
+    We can substitute t into the equations for X^2, Y^2, and Z^2 above
+    to get the values for X, Y, and Z.  To find the proper signs we note
+    that:
+
+	2 X Sin(t) = M[1][2] - M[2][1]
+	2 Y Sin(t) = M[2][0] - M[0][2]
+	2 Z Sin(t) = M[0][1] - M[1][0]
+}
+
+var Axis1, Axis2: TVector3f;
+    M, M1, M2: TMatrix;
+    cost, cost1,
+    sint,
+    s1, s2, s3: Single;
+    I: Integer;
+
+
+begin
+  // see if we are only rotating about a single Axis
+  if Abs(Angles[X]) < EPSILON then
+  begin
+    if Abs(Angles[Y]) < EPSILON then
+    begin
+      Result := MakeVector([0, 0, 1, Angles[Z]]);
+      Exit;
+    end
+    else
+      if Abs(Angles[Z]) < EPSILON then
+      begin
+        Result := MakeVector([0, 1, 0, Angles[Y]]);
+        Exit;
+      end
+   end
+   else
+     if (Abs(Angles[Y]) < EPSILON) and
+        (Abs(Angles[Z]) < EPSILON) then
+     begin
+       Result := MakeVector([1, 0, 0, Angles[X]]);
+       Exit;
+     end;
+
+  // make the rotation matrix
+  Axis1 := MakeAffineVector([1, 0, 0]);
+  M := CreateRotationMatrix(Axis1, Angles[X]);
+
+  Axis2 := MakeAffineVector([0, 1, 0]);
+  M2 := CreateRotationMatrix(Axis2, Angles[Y]);
+  M1 := MatrixMultiply(M, M2);
+
+  Axis2 := MakeAffineVector([0, 0, 1]);
+  M2 := CreateRotationMatrix(Axis2, Angles[Z]);
+  M := MatrixMultiply(M1, M2);
+
+  cost := ((M[X, X] + M[Y, Y] + M[Z, Z])-1) / 2;
+  if cost < -1 then cost := -1
+               else
+    if cost > 1 - EPSILON then
+    begin
+      // Bad Angle - this would cause a crash
+      Result := MakeVector([1, 0, 0, 0]);
+      Exit;
+    end;
+
+  cost1 := 1 - cost;
+  Result := Makevector([Sqrt((M[X, X]-cost) / cost1),
+                      Sqrt((M[Y, Y]-cost) / cost1),
+                      sqrt((M[Z, Z]-cost) / cost1),
+                      arccos(cost)]);
+
+  sint := 2 * Sqrt(1 - cost * cost); // This is actually 2 Sin(t)
+
+  // Determine the proper signs
+  for I := 0 to 7 do
+  begin
+    if (I and 1) > 1 then s1 := -1 else s1 := 1;
+    if (I and 2) > 1 then s2 := -1 else s2 := 1;
+    if (I and 4) > 1 then s3 := -1 else s3 := 1;
+    if (Abs(s1 * Result[X] * sint-M[Y, Z] + M[Z, Y]) < EPSILON2) and
+       (Abs(s2 * Result[Y] * sint-M[Z, X] + M[X, Z]) < EPSILON2) and
+       (Abs(s3 * Result[Z] * sint-M[X, Y] + M[Y, X]) < EPSILON2) then
+        begin
+          // We found the right combination of signs
+          Result[X] := Result[X] * s1;
+          Result[Y] := Result[Y] * s2;
+          Result[Z] := Result[Z] * s3;
+          Exit;
+        end;
+  end;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateRotationMatrixX(Sine, Cosine: Single): TMatrix; register;
+
+// creates matrix for rotation about x-axis
+
+begin
+  Result := EmptyMatrix;
+  Result[X, X] := 1;
+  Result[Y, Y] := Cosine;
+  Result[Y, Z] := Sine;
+  Result[Z, Y] := -Sine;
+  Result[Z, Z] := Cosine;
+  Result[W, W] := 1;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateRotationMatrixY(Sine, Cosine: Single): TMatrix; register;
+
+// creates matrix for rotation about y-axis
+
+begin
+  Result := EmptyMatrix;
+  Result[X, X] := Cosine;
+  Result[X, Z] := -Sine;
+  Result[Y, Y] := 1;
+  Result[Z, X] := Sine;
+  Result[Z, Z] := Cosine;
+  Result[W, W] := 1;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateRotationMatrixZ(Sine, Cosine: Single): TMatrix; register;
+
+// creates matrix for rotation about z-axis
+
+begin
+  Result := EmptyMatrix;
+  Result[X, X] := Cosine;
+  Result[X, Y] := Sine;
+  Result[Y, X] := -Sine;
+  Result[Y, Y] := Cosine;
+  Result[Z, Z] := 1;
+  Result[W, W] := 1;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateScaleMatrix(V: TAffineVector): TMatrix; register;
+
+// creates scaling matrix
+
+begin
+  Result := IdentityMatrix;
+  Result[X, X] := V[X];
+  Result[Y, Y] := V[Y];
+  Result[Z, Z] := V[Z];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function CreateTranslationMatrix(V: TVector): TMatrix; register;
+
+// creates translation matrix
+
+begin
+  Result := IdentityMatrix;
+  Result[W, X] := V[X];
+  Result[W, Y] := V[Y];
+  Result[W, Z] := V[Z];
+  Result[W, W] := V[W];
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Lerp(Start, Stop, t: Single): Single;
+
+// calculates linear interpolation between start and stop at point t
+
+begin
+  Result := Start + (Stop - Start) * t;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineLerp(V1, V2: TAffineVector; t: Single): TAffineVector;
+
+// calculates linear interpolation between vector1 and vector2 at point t
+
+begin
+  Result[X] := Lerp(V1[X], V2[X], t);
+  Result[Y] := Lerp(V1[Y], V2[Y], t);
+  Result[Z] := Lerp(V1[Z], V2[Z], t);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorLerp(V1, V2: TVector; t: Single): TVector;
+
+// calculates linear interpolation between vector1 and vector2 at point t
+
+begin
+  Result[X] := Lerp(V1[X], V2[X], t);
+  Result[Y] := Lerp(V1[Y], V2[Y], t);
+  Result[Z] := Lerp(V1[Z], V2[Z], t);
+  Result[W] := Lerp(V1[W], V2[W], t);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function QuaternionSlerp(QStart, QEnd: TQuaternion; Spin: Integer; t: Single): TQuaternion;
+
+// spherical linear interpolation of unit quaternions with spins
+// QStart, QEnd - start and end unit quaternions
+// t            - interpolation parameter (0 to 1)
+// Spin         - number of extra spin rotations to involve
+
+var beta,                   // complementary interp parameter
+    theta,                  // Angle between A and B
+    sint, cost,             // sine, cosine of theta
+    phi: Single;            // theta plus spins
+    bflip: Boolean;         // use negativ t?
+
+
+begin
+  // cosine theta
+  cost := VectorAngle(QStart.ImagPart, QEnd.ImagPart);
+
+  // if QEnd is on opposite hemisphere from QStart, use -QEnd instead
+  if cost < 0 then
+  begin
+    cost := -cost;
+    bflip := True;
+  end
+  else bflip := False;
+
+  // if QEnd is (within precision limits) the same as QStart,
+  // just linear interpolate between QStart and QEnd.
+  // Can't do spins, since we don't know what direction to spin.
+
+  if (1 - cost) < EPSILON then beta := 1 - t
+                          else
+  begin
+    // normal case
+    theta := arccos(cost);
+    phi := theta + Spin * Pi;
+    sint := sin(theta);
+    beta := sin(theta - t * phi) / sint;
+    t := sin(t * phi) / sint;
+  end;
+
+  if bflip then t := -t;
+
+  // interpolate
+  Result.ImagPart[X] := beta * QStart.ImagPart[X] + t * QEnd.ImagPart[X];
+  Result.ImagPart[Y] := beta * QStart.ImagPart[Y] + t * QEnd.ImagPart[Y];
+  Result.ImagPart[Z] := beta * QStart.ImagPart[Z] + t * QEnd.ImagPart[Z];
+  Result.RealPart := beta * QStart.RealPart + t * QEnd.RealPart;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineCombine(V1, V2: TAffineVector; F1, F2: Single): TAffineVector;
+
+// makes a linear combination of two vectors and return the result
+
+begin
+  Result[X] := (F1 * V1[X]) + (F2 * V2[X]);
+  Result[Y] := (F1 * V1[Y]) + (F2 * V2[Y]);
+  Result[Z] := (F1 * V1[Z]) + (F2 * V2[Z]);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorCombine(V1, V2: TVector; F1, F2: Single): TVector;
+
+// makes a linear combination of two vectors and return the result
+
+begin
+  Result[X] := (F1 * V1[X]) + (F2 * V2[X]);
+  Result[Y] := (F1 * V1[Y]) + (F2 * V2[Y]);
+  Result[Z] := (F1 * V1[Z]) + (F2 * V2[Z]);
+  Result[W] := (F1 * V1[W]) + (F2 * V2[W]);
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function MatrixDecompose(M: TMatrix; var Tran: TTransformations): Boolean; register;
+
+// Author: Spencer W. Thomas, University of Michigan
+//
+// MatrixDecompose - Decompose a non-degenerated 4x4 transformation matrix into
+// the sequence of transformations that produced it.
+//
+// The coefficient of each transformation is returned in the corresponding
+// element of the vector Tran.
+//
+// Returns true upon success, false if the matrix is singular.
+
+var I, J: Integer;
+    LocMat,
+    pmat,
+    invpmat,
+    tinvpmat: TMatrix;
+    prhs,
+    psol: TVector;
+    Row: array[0..2] of TAffineVector;
+
+begin
+  Result := False;
+  locmat := M;
+  // normalize the matrix
+  if locmat[W, W] = 0 then Exit;
+  for I := 0 to 3 do
+    for J := 0 to 3 do
+      locmat[I, J] := locmat[I, J] / locmat[W, W];
+
+  // pmat is used to solve for perspective, but it also provides
+  // an easy way to test for singularity of the upper 3x3 component.
+
+  pmat := locmat;
+  for I := 0 to 2 do pmat[I, W] := 0;
+  pmat[W, W] := 1;
+
+  if MatrixDeterminant(pmat) = 0 then Exit;
+
+  // First, isolate perspective.  This is the messiest.
+  if (locmat[X, W] <> 0) or
+     (locmat[Y, W] <> 0) or
+     (locmat[Z, W] <> 0) then
+  begin
+    // prhs is the right hand side of the equation.
+    prhs[X] := locmat[X, W];
+    prhs[Y] := locmat[Y, W];
+    prhs[Z] := locmat[Z, W];
+    prhs[W] := locmat[W, W];
+
+    // Solve the equation by inverting pmat and multiplying
+    // prhs by the inverse.  (This is the easiest way, not
+    // necessarily the best.)
+
+    invpmat := pmat;
+    MatrixInvert(invpmat);
+    MatrixTranspose(invpmat);
+    psol := VectorTransform(prhs, tinvpmat);
+
+    // stuff the answer away
+    Tran[ttPerspectiveX] := psol[X];
+    Tran[ttPerspectiveY] := psol[Y];
+    Tran[ttPerspectiveZ] := psol[Z];
+    Tran[ttPerspectiveW] := psol[W];
+
+    // clear the perspective partition
+    locmat[X, W] := 0;
+    locmat[Y, W] := 0;
+    locmat[Z, W] := 0;
+    locmat[W, W] := 1;
+  end
+  else
+  begin
+    // no perspective
+    Tran[ttPerspectiveX] := 0;
+    Tran[ttPerspectiveY] := 0;
+    Tran[ttPerspectiveZ] := 0;
+    Tran[ttPerspectiveW] := 0;
+  end;
+
+  // next take care of translation (easy)
+  for I := 0 to 2 do
+  begin
+    Tran[TTransType(Ord(ttTranslateX) + I)] := locmat[W, I];
+    locmat[W, I] := 0;
+  end;
+
+  // now get scale and shear
+  for I := 0 to 2 do
+  begin
+    row[I, X] := locmat[I, X];
+    row[I, Y] := locmat[I, Y];
+    row[I, Z] := locmat[I, Z];
+  end;
+
+  // compute X scale factor and normalize first row
+  Tran[ttScaleX] := Sqr(VectorNormalize(row[0])); // ml: calculation optimized
+
+  // compute XY shear factor and make 2nd row orthogonal to 1st
+  Tran[ttShearXY] := VectorAffineDotProduct(row[0], row[1]);
+  row[1] := VectorAffineCombine(row[1], row[0], 1, -Tran[ttShearXY]);
+
+  // now, compute Y scale and normalize 2nd row
+  Tran[ttScaleY] := Sqr(VectorNormalize(row[1])); // ml: calculation optimized
+  Tran[ttShearXY] := Tran[ttShearXY]/Tran[ttScaleY];
+
+  // compute XZ and YZ shears, orthogonalize 3rd row
+  Tran[ttShearXZ] := VectorAffineDotProduct(row[0], row[2]);
+  row[2] := VectorAffineCombine(row[2], row[0], 1, -Tran[ttShearXZ]);
+  Tran[ttShearYZ] := VectorAffineDotProduct(row[1], row[2]);
+  row[2] := VectorAffineCombine(row[2], row[1], 1, -Tran[ttShearYZ]);
+
+  // next, get Z scale and normalize 3rd row
+  Tran[ttScaleZ] := Sqr(VectorNormalize(row[1])); // (ML) calc. optimized
+  Tran[ttShearXZ] := Tran[ttShearXZ] / tran[ttScaleZ];
+  Tran[ttShearYZ] := Tran[ttShearYZ] / Tran[ttScaleZ];
+
+  // At this point, the matrix (in rows[]) is orthonormal.
+  // Check for a coordinate system flip.  If the determinant
+  // is -1, then negate the matrix and the scaling factors.
+  if VectorAffineDotProduct(row[0], VectorCrossProduct(row[1], row[2])) < 0 then
+    for I := 0 to 2 do
+    begin
+      Tran[TTransType(Ord(ttScaleX) + I)] := -Tran[TTransType(Ord(ttScaleX) + I)];
+      row[I, X] := -row[I, X];
+      row[I, Y] := -row[I, Y];
+      row[I, Z] := -row[I, Z];
+    end;
+
+  // now, get the rotations out, as described in the gem
+  Tran[ttRotateY] := arcsin(-row[0, Z]);
+  if cos(Tran[ttRotateY]) <> 0 then
+  begin
+    Tran[ttRotateX] := arctan2(row[1, Z], row[2, Z]);
+    Tran[ttRotateZ] := arctan2(row[0, Y], row[0, X]);
+  end
+  else
+  begin
+    tran[ttRotateX] := arctan2(row[1, X], row[1, Y]);
+    tran[ttRotateZ] := 0;
+  end;
+  // All done!
+  Result := True;
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorDblToFlt(V: THomogeneousDblVector): THomogeneousVector; assembler;
+
+// converts a vector containing double sized values into a vector with single sized values
+
+asm
+              FLD  QWORD PTR [EAX]
+              FSTP DWORD PTR [EDX]
+              FLD  QWORD PTR [EAX + 8]
+              FSTP DWORD PTR [EDX + 4]
+              FLD  QWORD PTR [EAX + 16]
+              FSTP DWORD PTR [EDX + 8]
+              FLD  QWORD PTR [EAX + 24]
+              FSTP DWORD PTR [EDX + 12]
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineDblToFlt(V: TAffineDblVector): TAffineVector; assembler;
+
+// converts a vector containing double sized values into a vector with single sized values
+
+asm
+              FLD  QWORD PTR [EAX]
+              FSTP DWORD PTR [EDX]
+              FLD  QWORD PTR [EAX + 8]
+              FSTP DWORD PTR [EDX + 4]
+              FLD  QWORD PTR [EAX + 16]
+              FSTP DWORD PTR [EDX + 8]
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorAffineFltToDbl(V: TAffineVector): TAffineDblVector; assembler;
+
+// converts a vector containing single sized values into a vector with double sized values
+
+asm
+              FLD  DWORD PTR [EAX]
+              FSTP QWORD PTR [EDX]
+              FLD  DWORD PTR [EAX + 8]
+              FSTP QWORD PTR [EDX + 4]
+              FLD  DWORD PTR [EAX + 16]
+              FSTP QWORD PTR [EDX + 8]
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function VectorFltToDbl(V: TVector): THomogeneousDblVector; assembler;
+
+// converts a vector containing single sized values into a vector with double sized values
+
+asm
+              FLD  DWORD PTR [EAX]
+              FSTP QWORD PTR [EDX]
+              FLD  DWORD PTR [EAX + 8]
+              FSTP QWORD PTR [EDX + 4]
+              FLD  DWORD PTR [EAX + 16]
+              FSTP QWORD PTR [EDX + 8]
+              FLD  DWORD PTR [EAX + 24]
+              FSTP QWORD PTR [EDX + 12]
+end;
+
+//----------------- coordinate system manipulation functions -----------------------------------------------------------
+
+function Turn(Matrix: TMatrix; Angle: Single): TMatrix;
+
+// rotates the given coordinate system (represented by the matrix) around its Y-axis
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MakeAffineVector(Matrix[1]), Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Turn(Matrix: TMatrix; MasterUp: TAffineVector; Angle: Single): TMatrix;
+
+// rotates the given coordinate system (represented by the matrix) around MasterUp
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MasterUp, Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Pitch(Matrix: TMatrix; Angle: Single): TMatrix;
+
+// rotates the given coordinate system (represented by the matrix) around its X-axis
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MakeAffineVector(Matrix[0]), Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Pitch(Matrix: TMatrix; MasterRight: TAffineVector; Angle: Single): TMatrix; overload;
+
+// rotates the given coordinate system (represented by the matrix) around MasterRight
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MasterRight, Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Roll(Matrix: TMatrix; Angle: Single): TMatrix;
+
+// rotates the given coordinate system (represented by the matrix) around its Z-axis
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MakeAffineVector(Matrix[2]), Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+function Roll(Matrix: TMatrix; MasterDirection: TAffineVector; Angle: Single): TMatrix; overload;
+
+// rotates the given coordinate system (represented by the matrix) around MasterDirection
+
+begin
+  Result := MatrixMultiply(Matrix, CreateRotationMatrix(MasterDirection, Angle));
+end;
+
+//----------------------------------------------------------------------------------------------------------------------
+
+end.
+
+
diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/gl.pas b/src/lib/JEDI-SDL/OpenGL/Pas/gl.pas
new file mode 100644
index 00000000..d1231cdd
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/gl.pas
@@ -0,0 +1,2301 @@
+unit gl;
+{
+  $Id: gl.pas,v 1.5 2007/05/20 20:28:31 savage Exp $
+
+  Adaption of the delphi3d.net OpenGL units to FreePascal
+  Sebastian Guenther (sg@freepascal.org) in 2002
+  These units are free to use
+}
+
+(*++ BUILD Version: 0004    // Increment this if a change has global effects
+
+Copyright (c) 1985-96, Microsoft Corporation
+
+Module Name:
+
+    gl.h
+
+Abstract:
+
+    Procedure declarations, constant definitions and macros for the OpenGL
+    component.
+
+--*)
+
+(*
+** Copyright 1996 Silicon Graphics, Inc.
+** All Rights Reserved.
+**
+** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
+** the contents of this file may not be disclosed to third parties, copied or
+** duplicated in any form, in whole or in part, without the prior written
+** permission of Silicon Graphics, Inc.
+**
+** RESTRICTED RIGHTS LEGEND:
+** Use, duplication or disclosure by the Government is subject to restrictions
+** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
+** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
+** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
+** rights reserved under the Copyright Laws of the United States.
+*)
+
+{******************************************************************************}
+{                                                                              }
+{ Converted to Delphi by Tom Nuydens (tom@delphi3d.net)                        }
+{ For the latest updates, visit Delphi3D: http://www.delphi3d.net              }
+{                                                                              }
+{ Modified for Delphi/Kylix and FreePascal                                     }
+{    by Dominique Louis ( Dominique@Savagesoftware.com.au)                     }
+{ For the latest updates, visit JEDI-SDL : http://www.sf.net/projects/jedi-sdl }
+{                                                                              }
+{******************************************************************************}
+
+{
+  $Log: gl.pas,v $
+  Revision 1.5  2007/05/20 20:28:31  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.4  2006/11/20 21:20:59  savage
+  Updated to work in MacOS X
+
+  Revision 1.3  2005/05/22 18:52:09  savage
+  Changes as suggested by Michalis Kamburelis. Thanks again.
+
+  Revision 1.2  2004/08/14 22:54:30  savage
+  Updated so that Library name defines are correctly defined for MacOS X.
+
+  Revision 1.1  2004/03/30 21:53:54  savage
+  Moved to it's own folder.
+
+  Revision 1.4  2004/02/20 17:09:55  savage
+  Code tidied up in gl, glu and glut, while extensions in glext.pas are now loaded using SDL_GL_GetProcAddress, thus making it more cross-platform compatible, but now more tied to SDL.
+
+  Revision 1.3  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.2  2004/02/14 00:09:18  savage
+  Changed uses to now make use of moduleloader.pas rather than dllfuncs.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  Revision 1.6  2003/06/02 12:32:12  savage
+  Modified Sources to avoid warnings with Delphi by moving CVS Logging to the top of the header files. Hopefully CVS Logging still works.
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+{$IFDEF __GPC__}
+  system,
+  gpc,
+{$ENDIF}
+
+{$IFDEF WINDOWS}
+  Windows,
+{$ENDIF}
+  moduleloader;
+
+
+var
+  LibGL: TModuleHandle;
+
+type
+  GLenum     = Cardinal;      PGLenum     = ^GLenum;
+  GLboolean  = Byte;          PGLboolean  = ^GLboolean;
+  GLbitfield = Cardinal;      PGLbitfield = ^GLbitfield;
+  GLbyte     = ShortInt;      PGLbyte     = ^GLbyte;
+  GLshort    = SmallInt;      PGLshort    = ^GLshort;
+  GLint      = Integer;       PGLint      = ^GLint;
+  GLsizei    = Integer;       PGLsizei    = ^GLsizei;
+  GLubyte    = Byte;          PGLubyte    = ^GLubyte;
+  GLushort   = Word;          PGLushort   = ^GLushort;
+  GLuint     = Cardinal;      PGLuint     = ^GLuint;
+  GLfloat    = Single;        PGLfloat    = ^GLfloat;
+  GLclampf   = Single;        PGLclampf   = ^GLclampf;
+  GLdouble   = Double;        PGLdouble   = ^GLdouble;
+  GLclampd   = Double;        PGLclampd   = ^GLclampd;
+{ GLvoid     = void; }        PGLvoid     = Pointer;
+
+{******************************************************************************}
+
+const
+{$IFDEF WINDOWS}
+  GLLibName = 'OpenGL32.dll';
+{$ENDIF}
+
+{$IFDEF UNIX}
+{$IFDEF DARWIN}
+  GLLibName = '/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib';
+{$ELSE}
+  GLLibName = 'libGL.so.1';
+{$ENDIF}
+{$ENDIF}
+
+  // Version
+  GL_VERSION_1_1                    = 1;
+
+  // AccumOp
+  GL_ACCUM                          = $0100;
+  GL_LOAD                           = $0101;
+  GL_RETURN                         = $0102;
+  GL_MULT                           = $0103;
+  GL_ADD                            = $0104;
+
+  // AlphaFunction
+  GL_NEVER                          = $0200;
+  GL_LESS                           = $0201;
+  GL_EQUAL                          = $0202;
+  GL_LEQUAL                         = $0203;
+  GL_GREATER                        = $0204;
+  GL_NOTEQUAL                       = $0205;
+  GL_GEQUAL                         = $0206;
+  GL_ALWAYS                         = $0207;
+
+  // AttribMask
+  GL_CURRENT_BIT                    = $00000001;
+  GL_POINT_BIT                      = $00000002;
+  GL_LINE_BIT                       = $00000004;
+  GL_POLYGON_BIT                    = $00000008;
+  GL_POLYGON_STIPPLE_BIT            = $00000010;
+  GL_PIXEL_MODE_BIT                 = $00000020;
+  GL_LIGHTING_BIT                   = $00000040;
+  GL_FOG_BIT                        = $00000080;
+  GL_DEPTH_BUFFER_BIT               = $00000100;
+  GL_ACCUM_BUFFER_BIT               = $00000200;
+  GL_STENCIL_BUFFER_BIT             = $00000400;
+  GL_VIEWPORT_BIT                   = $00000800;
+  GL_TRANSFORM_BIT                  = $00001000;
+  GL_ENABLE_BIT                     = $00002000;
+  GL_COLOR_BUFFER_BIT               = $00004000;
+  GL_HINT_BIT                       = $00008000;
+  GL_EVAL_BIT                       = $00010000;
+  GL_LIST_BIT                       = $00020000;
+  GL_TEXTURE_BIT                    = $00040000;
+  GL_SCISSOR_BIT                    = $00080000;
+  GL_ALL_ATTRIB_BITS                = $000FFFFF;
+
+  // BeginMode
+  GL_POINTS                         = $0000;
+  GL_LINES                          = $0001;
+  GL_LINE_LOOP                      = $0002;
+  GL_LINE_STRIP                     = $0003;
+  GL_TRIANGLES                      = $0004;
+  GL_TRIANGLE_STRIP                 = $0005;
+  GL_TRIANGLE_FAN                   = $0006;
+  GL_QUADS                          = $0007;
+  GL_QUAD_STRIP                     = $0008;
+  GL_POLYGON                        = $0009;
+
+  // BlendingFactorDest
+  GL_ZERO                           = 0;
+  GL_ONE                            = 1;
+  GL_SRC_COLOR                      = $0300;
+  GL_ONE_MINUS_SRC_COLOR            = $0301;
+  GL_SRC_ALPHA                      = $0302;
+  GL_ONE_MINUS_SRC_ALPHA            = $0303;
+  GL_DST_ALPHA                      = $0304;
+  GL_ONE_MINUS_DST_ALPHA            = $0305;
+
+  // BlendingFactorSrc
+  //      GL_ZERO
+  //      GL_ONE
+  GL_DST_COLOR                      = $0306;
+  GL_ONE_MINUS_DST_COLOR            = $0307;
+  GL_SRC_ALPHA_SATURATE             = $0308;
+  //      GL_SRC_ALPHA
+  //      GL_ONE_MINUS_SRC_ALPHA
+  //      GL_DST_ALPHA
+  //      GL_ONE_MINUS_DST_ALPHA
+
+  // Boolean
+  GL_TRUE                           = 1;
+  GL_FALSE                          = 0;
+
+  // ClearBufferMask
+  //      GL_COLOR_BUFFER_BIT
+  //      GL_ACCUM_BUFFER_BIT
+  //      GL_STENCIL_BUFFER_BIT
+  //      GL_DEPTH_BUFFER_BIT
+
+  // ClientArrayType
+  //      GL_VERTEX_ARRAY
+  //      GL_NORMAL_ARRAY
+  //      GL_COLOR_ARRAY
+  //      GL_INDEX_ARRAY
+  //      GL_TEXTURE_COORD_ARRAY
+  //      GL_EDGE_FLAG_ARRAY
+
+  // ClipPlaneName
+  GL_CLIP_PLANE0                    = $3000;
+  GL_CLIP_PLANE1                    = $3001;
+  GL_CLIP_PLANE2                    = $3002;
+  GL_CLIP_PLANE3                    = $3003;
+  GL_CLIP_PLANE4                    = $3004;
+  GL_CLIP_PLANE5                    = $3005;
+
+  // ColorMaterialFace
+  //      GL_FRONT
+  //      GL_BACK
+  //      GL_FRONT_AND_BACK
+
+  // ColorMaterialParameter
+  //      GL_AMBIENT
+  //      GL_DIFFUSE
+  //      GL_SPECULAR
+  //      GL_EMISSION
+  //      GL_AMBIENT_AND_DIFFUSE
+
+  // ColorPointerType
+  //      GL_BYTE
+  //      GL_UNSIGNED_BYTE
+  //      GL_SHORT
+  //      GL_UNSIGNED_SHORT
+  //      GL_INT
+  //      GL_UNSIGNED_INT
+  //      GL_FLOAT
+  //      GL_DOUBLE
+
+  // CullFaceMode
+  //      GL_FRONT
+  //      GL_BACK
+  //      GL_FRONT_AND_BACK
+
+  // DataType
+  GL_BYTE                           = $1400;
+  GL_UNSIGNED_BYTE                  = $1401;
+  GL_SHORT                          = $1402;
+  GL_UNSIGNED_SHORT                 = $1403;
+  GL_INT                            = $1404;
+  GL_UNSIGNED_INT                   = $1405;
+  GL_FLOAT                          = $1406;
+  GL_2_BYTES                        = $1407;
+  GL_3_BYTES                        = $1408;
+  GL_4_BYTES                        = $1409;
+  GL_DOUBLE                         = $140A;
+
+  // DepthFunction
+  //      GL_NEVER
+  //      GL_LESS
+  //      GL_EQUAL
+  //      GL_LEQUAL
+  //      GL_GREATER
+  //      GL_NOTEQUAL
+  //      GL_GEQUAL
+  //      GL_ALWAYS
+
+  // DrawBufferMode
+  GL_NONE                           = 0;
+  GL_FRONT_LEFT                     = $0400;
+  GL_FRONT_RIGHT                    = $0401;
+  GL_BACK_LEFT                      = $0402;
+  GL_BACK_RIGHT                     = $0403;
+  GL_FRONT                          = $0404;
+  GL_BACK                           = $0405;
+  GL_LEFT                           = $0406;
+  GL_RIGHT                          = $0407;
+  GL_FRONT_AND_BACK                 = $0408;
+  GL_AUX0                           = $0409;
+  GL_AUX1                           = $040A;
+  GL_AUX2                           = $040B;
+  GL_AUX3                           = $040C;
+
+  // Enable
+  //      GL_FOG
+  //      GL_LIGHTING
+  //      GL_TEXTURE_1D
+  //      GL_TEXTURE_2D
+  //      GL_LINE_STIPPLE
+  //      GL_POLYGON_STIPPLE
+  //      GL_CULL_FACE
+  //      GL_ALPHA_TEST
+  //      GL_BLEND
+  //      GL_INDEX_LOGIC_OP
+  //      GL_COLOR_LOGIC_OP
+  //      GL_DITHER
+  //      GL_STENCIL_TEST
+  //      GL_DEPTH_TEST
+  //      GL_CLIP_PLANE0
+  //      GL_CLIP_PLANE1
+  //      GL_CLIP_PLANE2
+  //      GL_CLIP_PLANE3
+  //      GL_CLIP_PLANE4
+  //      GL_CLIP_PLANE5
+  //      GL_LIGHT0
+  //      GL_LIGHT1
+  //      GL_LIGHT2
+  //      GL_LIGHT3
+  //      GL_LIGHT4
+  //      GL_LIGHT5
+  //      GL_LIGHT6
+  //      GL_LIGHT7
+  //      GL_TEXTURE_GEN_S
+  //      GL_TEXTURE_GEN_T
+  //      GL_TEXTURE_GEN_R
+  //      GL_TEXTURE_GEN_Q
+  //      GL_MAP1_VERTEX_3
+  //      GL_MAP1_VERTEX_4
+  //      GL_MAP1_COLOR_4
+  //      GL_MAP1_INDEX
+  //      GL_MAP1_NORMAL
+  //      GL_MAP1_TEXTURE_COORD_1
+  //      GL_MAP1_TEXTURE_COORD_2
+  //      GL_MAP1_TEXTURE_COORD_3
+  //      GL_MAP1_TEXTURE_COORD_4
+  //      GL_MAP2_VERTEX_3
+  //      GL_MAP2_VERTEX_4
+  //      GL_MAP2_COLOR_4
+  //      GL_MAP2_INDEX
+  //      GL_MAP2_NORMAL
+  //      GL_MAP2_TEXTURE_COORD_1
+  //      GL_MAP2_TEXTURE_COORD_2
+  //      GL_MAP2_TEXTURE_COORD_3
+  //      GL_MAP2_TEXTURE_COORD_4
+  //      GL_POINT_SMOOTH
+  //      GL_LINE_SMOOTH
+  //      GL_POLYGON_SMOOTH
+  //      GL_SCISSOR_TEST
+  //      GL_COLOR_MATERIAL
+  //      GL_NORMALIZE
+  //      GL_AUTO_NORMAL
+  //      GL_VERTEX_ARRAY
+  //      GL_NORMAL_ARRAY
+  //      GL_COLOR_ARRAY
+  //      GL_INDEX_ARRAY
+  //      GL_TEXTURE_COORD_ARRAY
+  //      GL_EDGE_FLAG_ARRAY
+  //      GL_POLYGON_OFFSET_POINT
+  //      GL_POLYGON_OFFSET_LINE
+  //      GL_POLYGON_OFFSET_FILL
+
+  // ErrorCode
+  GL_NO_ERROR                       = 0;
+  GL_INVALID_ENUM                   = $0500;
+  GL_INVALID_VALUE                  = $0501;
+  GL_INVALID_OPERATION              = $0502;
+  GL_STACK_OVERFLOW                 = $0503;
+  GL_STACK_UNDERFLOW                = $0504;
+  GL_OUT_OF_MEMORY                  = $0505;
+
+  // FeedBackMode
+  GL_2D                             = $0600;
+  GL_3D                             = $0601;
+  GL_3D_COLOR                       = $0602;
+  GL_3D_COLOR_TEXTURE               = $0603;
+  GL_4D_COLOR_TEXTURE               = $0604;
+
+  // FeedBackToken
+  GL_PASS_THROUGH_TOKEN             = $0700;
+  GL_POINT_TOKEN                    = $0701;
+  GL_LINE_TOKEN                     = $0702;
+  GL_POLYGON_TOKEN                  = $0703;
+  GL_BITMAP_TOKEN                   = $0704;
+  GL_DRAW_PIXEL_TOKEN               = $0705;
+  GL_COPY_PIXEL_TOKEN               = $0706;
+  GL_LINE_RESET_TOKEN               = $0707;
+
+  // FogMode
+  //      GL_LINEAR
+  GL_EXP                            = $0800;
+  GL_EXP2                           = $0801;
+
+  // FogParameter
+  //      GL_FOG_COLOR
+  //      GL_FOG_DENSITY
+  //      GL_FOG_END
+  //      GL_FOG_INDEX
+  //      GL_FOG_MODE
+  //      GL_FOG_START
+
+  // FrontFaceDirection
+  GL_CW                             = $0900;
+  GL_CCW                            = $0901;
+
+  // GetMapTarget
+  GL_COEFF                          = $0A00;
+  GL_ORDER                          = $0A01;
+  GL_DOMAIN                         = $0A02;
+
+  // GetPixelMap
+  //      GL_PIXEL_MAP_I_TO_I 
+  //      GL_PIXEL_MAP_S_TO_S 
+  //      GL_PIXEL_MAP_I_TO_R 
+  //      GL_PIXEL_MAP_I_TO_G 
+  //      GL_PIXEL_MAP_I_TO_B 
+  //      GL_PIXEL_MAP_I_TO_A
+  //      GL_PIXEL_MAP_R_TO_R
+  //      GL_PIXEL_MAP_G_TO_G 
+  //      GL_PIXEL_MAP_B_TO_B 
+  //      GL_PIXEL_MAP_A_TO_A 
+
+  // GetPointerTarget 
+  //      GL_VERTEX_ARRAY_POINTER 
+  //      GL_NORMAL_ARRAY_POINTER 
+  //      GL_COLOR_ARRAY_POINTER 
+  //      GL_INDEX_ARRAY_POINTER 
+  //      GL_TEXTURE_COORD_ARRAY_POINTER 
+  //      GL_EDGE_FLAG_ARRAY_POINTER 
+
+  // GetTarget 
+  GL_CURRENT_COLOR                  = $0B00;
+  GL_CURRENT_INDEX                  = $0B01;
+  GL_CURRENT_NORMAL                 = $0B02;
+  GL_CURRENT_TEXTURE_COORDS         = $0B03;
+  GL_CURRENT_RASTER_COLOR           = $0B04;
+  GL_CURRENT_RASTER_INDEX           = $0B05;
+  GL_CURRENT_RASTER_TEXTURE_COORDS  = $0B06;
+  GL_CURRENT_RASTER_POSITION        = $0B07;
+  GL_CURRENT_RASTER_POSITION_VALID  = $0B08;
+  GL_CURRENT_RASTER_DISTANCE        = $0B09;
+  GL_POINT_SMOOTH                   = $0B10;
+  GL_POINT_SIZE                     = $0B11;
+  GL_POINT_SIZE_RANGE               = $0B12;
+  GL_POINT_SIZE_GRANULARITY         = $0B13;
+  GL_LINE_SMOOTH                    = $0B20;
+  GL_LINE_WIDTH                     = $0B21;
+  GL_LINE_WIDTH_RANGE               = $0B22;
+  GL_LINE_WIDTH_GRANULARITY         = $0B23;
+  GL_LINE_STIPPLE                   = $0B24;
+  GL_LINE_STIPPLE_PATTERN           = $0B25;
+  GL_LINE_STIPPLE_REPEAT            = $0B26;
+  GL_LIST_MODE                      = $0B30;
+  GL_MAX_LIST_NESTING               = $0B31;
+  GL_LIST_BASE                      = $0B32;
+  GL_LIST_INDEX                     = $0B33;
+  GL_POLYGON_MODE                   = $0B40;
+  GL_POLYGON_SMOOTH                 = $0B41;
+  GL_POLYGON_STIPPLE                = $0B42;
+  GL_EDGE_FLAG                      = $0B43;
+  GL_CULL_FACE                      = $0B44;
+  GL_CULL_FACE_MODE                 = $0B45;
+  GL_FRONT_FACE                     = $0B46;
+  GL_LIGHTING                       = $0B50;
+  GL_LIGHT_MODEL_LOCAL_VIEWER       = $0B51;
+  GL_LIGHT_MODEL_TWO_SIDE           = $0B52;
+  GL_LIGHT_MODEL_AMBIENT            = $0B53;
+  GL_SHADE_MODEL                    = $0B54;
+  GL_COLOR_MATERIAL_FACE            = $0B55;
+  GL_COLOR_MATERIAL_PARAMETER       = $0B56;
+  GL_COLOR_MATERIAL                 = $0B57;
+  GL_FOG                            = $0B60;
+  GL_FOG_INDEX                      = $0B61;
+  GL_FOG_DENSITY                    = $0B62;
+  GL_FOG_START                      = $0B63;
+  GL_FOG_END                        = $0B64;
+  GL_FOG_MODE                       = $0B65;
+  GL_FOG_COLOR                      = $0B66;
+  GL_DEPTH_RANGE                    = $0B70;
+  GL_DEPTH_TEST                     = $0B71;
+  GL_DEPTH_WRITEMASK                = $0B72;
+  GL_DEPTH_CLEAR_VALUE              = $0B73;
+  GL_DEPTH_FUNC                     = $0B74;
+  GL_ACCUM_CLEAR_VALUE              = $0B80;
+  GL_STENCIL_TEST                   = $0B90;
+  GL_STENCIL_CLEAR_VALUE            = $0B91;
+  GL_STENCIL_FUNC                   = $0B92;
+  GL_STENCIL_VALUE_MASK             = $0B93;
+  GL_STENCIL_FAIL                   = $0B94;
+  GL_STENCIL_PASS_DEPTH_FAIL        = $0B95;
+  GL_STENCIL_PASS_DEPTH_PASS        = $0B96;
+  GL_STENCIL_REF                    = $0B97;
+  GL_STENCIL_WRITEMASK              = $0B98;
+  GL_MATRIX_MODE                    = $0BA0;
+  GL_NORMALIZE                      = $0BA1;
+  GL_VIEWPORT                       = $0BA2;
+  GL_MODELVIEW_STACK_DEPTH          = $0BA3;
+  GL_PROJECTION_STACK_DEPTH         = $0BA4;
+  GL_TEXTURE_STACK_DEPTH            = $0BA5;
+  GL_MODELVIEW_MATRIX               = $0BA6;
+  GL_PROJECTION_MATRIX              = $0BA7;
+  GL_TEXTURE_MATRIX                 = $0BA8;
+  GL_ATTRIB_STACK_DEPTH             = $0BB0;
+  GL_CLIENT_ATTRIB_STACK_DEPTH      = $0BB1;
+  GL_ALPHA_TEST                     = $0BC0;
+  GL_ALPHA_TEST_FUNC                = $0BC1;
+  GL_ALPHA_TEST_REF                 = $0BC2;
+  GL_DITHER                         = $0BD0;
+  GL_BLEND_DST                      = $0BE0;
+  GL_BLEND_SRC                      = $0BE1;
+  GL_BLEND                          = $0BE2;
+  GL_LOGIC_OP_MODE                  = $0BF0;
+  GL_INDEX_LOGIC_OP                 = $0BF1;
+  GL_COLOR_LOGIC_OP                 = $0BF2;
+  GL_AUX_BUFFERS                    = $0C00;
+  GL_DRAW_BUFFER                    = $0C01;
+  GL_READ_BUFFER                    = $0C02;
+  GL_SCISSOR_BOX                    = $0C10;
+  GL_SCISSOR_TEST                   = $0C11;
+  GL_INDEX_CLEAR_VALUE              = $0C20;
+  GL_INDEX_WRITEMASK                = $0C21;
+  GL_COLOR_CLEAR_VALUE              = $0C22;
+  GL_COLOR_WRITEMASK                = $0C23;
+  GL_INDEX_MODE                     = $0C30;
+  GL_RGBA_MODE                      = $0C31;
+  GL_DOUBLEBUFFER                   = $0C32;
+  GL_STEREO                         = $0C33;
+  GL_RENDER_MODE                    = $0C40;
+  GL_PERSPECTIVE_CORRECTION_HINT    = $0C50;
+  GL_POINT_SMOOTH_HINT              = $0C51;
+  GL_LINE_SMOOTH_HINT               = $0C52;
+  GL_POLYGON_SMOOTH_HINT            = $0C53;
+  GL_FOG_HINT                       = $0C54;
+  GL_TEXTURE_GEN_S                  = $0C60;
+  GL_TEXTURE_GEN_T                  = $0C61;
+  GL_TEXTURE_GEN_R                  = $0C62;
+  GL_TEXTURE_GEN_Q                  = $0C63;
+  GL_PIXEL_MAP_I_TO_I               = $0C70;
+  GL_PIXEL_MAP_S_TO_S               = $0C71;
+  GL_PIXEL_MAP_I_TO_R               = $0C72;
+  GL_PIXEL_MAP_I_TO_G               = $0C73;
+  GL_PIXEL_MAP_I_TO_B               = $0C74;
+  GL_PIXEL_MAP_I_TO_A               = $0C75;
+  GL_PIXEL_MAP_R_TO_R               = $0C76;
+  GL_PIXEL_MAP_G_TO_G               = $0C77;
+  GL_PIXEL_MAP_B_TO_B               = $0C78;
+  GL_PIXEL_MAP_A_TO_A               = $0C79;
+  GL_PIXEL_MAP_I_TO_I_SIZE          = $0CB0;
+  GL_PIXEL_MAP_S_TO_S_SIZE          = $0CB1;
+  GL_PIXEL_MAP_I_TO_R_SIZE          = $0CB2;
+  GL_PIXEL_MAP_I_TO_G_SIZE          = $0CB3;
+  GL_PIXEL_MAP_I_TO_B_SIZE          = $0CB4;
+  GL_PIXEL_MAP_I_TO_A_SIZE          = $0CB5;
+  GL_PIXEL_MAP_R_TO_R_SIZE          = $0CB6;
+  GL_PIXEL_MAP_G_TO_G_SIZE          = $0CB7;
+  GL_PIXEL_MAP_B_TO_B_SIZE          = $0CB8;
+  GL_PIXEL_MAP_A_TO_A_SIZE          = $0CB9;
+  GL_UNPACK_SWAP_BYTES              = $0CF0;
+  GL_UNPACK_LSB_FIRST               = $0CF1;
+  GL_UNPACK_ROW_LENGTH              = $0CF2;
+  GL_UNPACK_SKIP_ROWS               = $0CF3;
+  GL_UNPACK_SKIP_PIXELS             = $0CF4;
+  GL_UNPACK_ALIGNMENT               = $0CF5;
+  GL_PACK_SWAP_BYTES                = $0D00;
+  GL_PACK_LSB_FIRST                 = $0D01;
+  GL_PACK_ROW_LENGTH                = $0D02;
+  GL_PACK_SKIP_ROWS                 = $0D03;
+  GL_PACK_SKIP_PIXELS               = $0D04;
+  GL_PACK_ALIGNMENT                 = $0D05;
+  GL_MAP_COLOR                      = $0D10;
+  GL_MAP_STENCIL                    = $0D11;
+  GL_INDEX_SHIFT                    = $0D12;
+  GL_INDEX_OFFSET                   = $0D13;
+  GL_RED_SCALE                      = $0D14;
+  GL_RED_BIAS                       = $0D15;
+  GL_ZOOM_X                         = $0D16;
+  GL_ZOOM_Y                         = $0D17;
+  GL_GREEN_SCALE                    = $0D18;
+  GL_GREEN_BIAS                     = $0D19;
+  GL_BLUE_SCALE                     = $0D1A;
+  GL_BLUE_BIAS                      = $0D1B;
+  GL_ALPHA_SCALE                    = $0D1C;
+  GL_ALPHA_BIAS                     = $0D1D;
+  GL_DEPTH_SCALE                    = $0D1E;
+  GL_DEPTH_BIAS                     = $0D1F;
+  GL_MAX_EVAL_ORDER                 = $0D30;
+  GL_MAX_LIGHTS                     = $0D31;
+  GL_MAX_CLIP_PLANES                = $0D32;
+  GL_MAX_TEXTURE_SIZE               = $0D33;
+  GL_MAX_PIXEL_MAP_TABLE            = $0D34;
+  GL_MAX_ATTRIB_STACK_DEPTH         = $0D35;
+  GL_MAX_MODELVIEW_STACK_DEPTH      = $0D36;
+  GL_MAX_NAME_STACK_DEPTH           = $0D37;
+  GL_MAX_PROJECTION_STACK_DEPTH     = $0D38;
+  GL_MAX_TEXTURE_STACK_DEPTH        = $0D39;
+  GL_MAX_VIEWPORT_DIMS              = $0D3A;
+  GL_MAX_CLIENT_ATTRIB_STACK_DEPTH  = $0D3B;
+  GL_SUBPIXEL_BITS                  = $0D50;
+  GL_INDEX_BITS                     = $0D51;
+  GL_RED_BITS                       = $0D52;
+  GL_GREEN_BITS                     = $0D53;
+  GL_BLUE_BITS                      = $0D54;
+  GL_ALPHA_BITS                     = $0D55;
+  GL_DEPTH_BITS                     = $0D56;
+  GL_STENCIL_BITS                   = $0D57;
+  GL_ACCUM_RED_BITS                 = $0D58;
+  GL_ACCUM_GREEN_BITS               = $0D59;
+  GL_ACCUM_BLUE_BITS                = $0D5A;
+  GL_ACCUM_ALPHA_BITS               = $0D5B;
+  GL_NAME_STACK_DEPTH               = $0D70;
+  GL_AUTO_NORMAL                    = $0D80;
+  GL_MAP1_COLOR_4                   = $0D90;
+  GL_MAP1_INDEX                     = $0D91;
+  GL_MAP1_NORMAL                    = $0D92;
+  GL_MAP1_TEXTURE_COORD_1           = $0D93;
+  GL_MAP1_TEXTURE_COORD_2           = $0D94;
+  GL_MAP1_TEXTURE_COORD_3           = $0D95;
+  GL_MAP1_TEXTURE_COORD_4           = $0D96;
+  GL_MAP1_VERTEX_3                  = $0D97;
+  GL_MAP1_VERTEX_4                  = $0D98;
+  GL_MAP2_COLOR_4                   = $0DB0;
+  GL_MAP2_INDEX                     = $0DB1;
+  GL_MAP2_NORMAL                    = $0DB2;
+  GL_MAP2_TEXTURE_COORD_1           = $0DB3;
+  GL_MAP2_TEXTURE_COORD_2           = $0DB4;
+  GL_MAP2_TEXTURE_COORD_3           = $0DB5;
+  GL_MAP2_TEXTURE_COORD_4           = $0DB6;
+  GL_MAP2_VERTEX_3                  = $0DB7;
+  GL_MAP2_VERTEX_4                  = $0DB8;
+  GL_MAP1_GRID_DOMAIN               = $0DD0;
+  GL_MAP1_GRID_SEGMENTS             = $0DD1;
+  GL_MAP2_GRID_DOMAIN               = $0DD2;
+  GL_MAP2_GRID_SEGMENTS             = $0DD3;
+  GL_TEXTURE_1D                     = $0DE0;
+  GL_TEXTURE_2D                     = $0DE1;
+  GL_FEEDBACK_BUFFER_POINTER        = $0DF0;
+  GL_FEEDBACK_BUFFER_SIZE           = $0DF1;
+  GL_FEEDBACK_BUFFER_TYPE           = $0DF2;
+  GL_SELECTION_BUFFER_POINTER       = $0DF3;
+  GL_SELECTION_BUFFER_SIZE          = $0DF4;
+  //      GL_TEXTURE_BINDING_1D
+  //      GL_TEXTURE_BINDING_2D 
+  //      GL_VERTEX_ARRAY 
+  //      GL_NORMAL_ARRAY 
+  //      GL_COLOR_ARRAY 
+  //      GL_INDEX_ARRAY 
+  //      GL_TEXTURE_COORD_ARRAY 
+  //      GL_EDGE_FLAG_ARRAY
+  //      GL_VERTEX_ARRAY_SIZE
+  //      GL_VERTEX_ARRAY_TYPE 
+  //      GL_VERTEX_ARRAY_STRIDE 
+  //      GL_NORMAL_ARRAY_TYPE 
+  //      GL_NORMAL_ARRAY_STRIDE 
+  //      GL_COLOR_ARRAY_SIZE 
+  //      GL_COLOR_ARRAY_TYPE 
+  //      GL_COLOR_ARRAY_STRIDE 
+  //      GL_INDEX_ARRAY_TYPE 
+  //      GL_INDEX_ARRAY_STRIDE 
+  //      GL_TEXTURE_COORD_ARRAY_SIZE 
+  //      GL_TEXTURE_COORD_ARRAY_TYPE 
+  //      GL_TEXTURE_COORD_ARRAY_STRIDE 
+  //      GL_EDGE_FLAG_ARRAY_STRIDE 
+  //      GL_POLYGON_OFFSET_FACTOR 
+  //      GL_POLYGON_OFFSET_UNITS 
+
+  // GetTextureParameter 
+  //      GL_TEXTURE_MAG_FILTER 
+  //      GL_TEXTURE_MIN_FILTER 
+  //      GL_TEXTURE_WRAP_S
+  //      GL_TEXTURE_WRAP_T
+  GL_TEXTURE_WIDTH                  = $1000;
+  GL_TEXTURE_HEIGHT                 = $1001;
+  GL_TEXTURE_INTERNAL_FORMAT        = $1003;
+  GL_TEXTURE_BORDER_COLOR           = $1004;
+  GL_TEXTURE_BORDER                 = $1005;
+  //      GL_TEXTURE_RED_SIZE
+  //      GL_TEXTURE_GREEN_SIZE
+  //      GL_TEXTURE_BLUE_SIZE
+  //      GL_TEXTURE_ALPHA_SIZE
+  //      GL_TEXTURE_LUMINANCE_SIZE
+  //      GL_TEXTURE_INTENSITY_SIZE
+  //      GL_TEXTURE_PRIORITY
+  //      GL_TEXTURE_RESIDENT
+
+  // HintMode
+  GL_DONT_CARE                      = $1100;
+  GL_FASTEST                        = $1101;
+  GL_NICEST                         = $1102;
+
+  // HintTarget
+  //      GL_PERSPECTIVE_CORRECTION_HINT
+  //      GL_POINT_SMOOTH_HINT
+  //      GL_LINE_SMOOTH_HINT
+  //      GL_POLYGON_SMOOTH_HINT
+  //      GL_FOG_HINT
+
+  // IndexPointerType
+  //      GL_SHORT
+  //      GL_INT
+  //      GL_FLOAT
+  //      GL_DOUBLE
+
+  // LightModelParameter
+  //      GL_LIGHT_MODEL_AMBIENT
+  //      GL_LIGHT_MODEL_LOCAL_VIEWER
+  //      GL_LIGHT_MODEL_TWO_SIDE
+
+  // LightName
+  GL_LIGHT0                         = $4000;
+  GL_LIGHT1                         = $4001;
+  GL_LIGHT2                         = $4002;
+  GL_LIGHT3                         = $4003;
+  GL_LIGHT4                         = $4004;
+  GL_LIGHT5                         = $4005;
+  GL_LIGHT6                         = $4006;
+  GL_LIGHT7                         = $4007;
+
+  // LightParameter
+  GL_AMBIENT                        = $1200;
+  GL_DIFFUSE                        = $1201;
+  GL_SPECULAR                       = $1202;
+  GL_POSITION                       = $1203;
+  GL_SPOT_DIRECTION                 = $1204;
+  GL_SPOT_EXPONENT                  = $1205;
+  GL_SPOT_CUTOFF                    = $1206;
+  GL_CONSTANT_ATTENUATION           = $1207;
+  GL_LINEAR_ATTENUATION             = $1208;
+  GL_QUADRATIC_ATTENUATION          = $1209;
+
+  // InterleavedArrays
+  //      GL_V2F
+  //      GL_V3F
+  //      GL_C4UB_V2F
+  //      GL_C4UB_V3F
+  //      GL_C3F_V3F
+  //      GL_N3F_V3F
+  //      GL_C4F_N3F_V3F
+  //      GL_T2F_V3F
+  //      GL_T4F_V4F
+  //      GL_T2F_C4UB_V3F
+  //      GL_T2F_C3F_V3F
+  //      GL_T2F_N3F_V3F
+  //      GL_T2F_C4F_N3F_V3F
+  //      GL_T4F_C4F_N3F_V4F
+
+  // ListMode
+  GL_COMPILE                        = $1300;
+  GL_COMPILE_AND_EXECUTE            = $1301;
+
+  // ListNameType
+  //      GL_BYTE
+  //      GL_UNSIGNED_BYTE
+  //      GL_SHORT
+  //      GL_UNSIGNED_SHORT
+  //      GL_INT
+  //      GL_UNSIGNED_INT
+  //      GL_FLOAT
+  //      GL_2_BYTES
+  //      GL_3_BYTES
+  //      GL_4_BYTES
+
+  // LogicOp
+  GL_CLEAR                          = $1500;
+  GL_AND                            = $1501;
+  GL_AND_REVERSE                    = $1502;
+  GL_COPY                           = $1503;
+  GL_AND_INVERTED                   = $1504;
+  GL_NOOP                           = $1505;
+  GL_XOR                            = $1506;
+  GL_OR                             = $1507;
+  GL_NOR                            = $1508;
+  GL_EQUIV                          = $1509;
+  GL_INVERT                         = $150A;
+  GL_OR_REVERSE                     = $150B;
+  GL_COPY_INVERTED                  = $150C;
+  GL_OR_INVERTED                    = $150D;
+  GL_NAND                           = $150E;
+  GL_SET                            = $150F;
+
+  // MapTarget
+  //      GL_MAP1_COLOR_4
+  //      GL_MAP1_INDEX
+  //      GL_MAP1_NORMAL
+  //      GL_MAP1_TEXTURE_COORD_1
+  //      GL_MAP1_TEXTURE_COORD_2
+  //      GL_MAP1_TEXTURE_COORD_3
+  //      GL_MAP1_TEXTURE_COORD_4
+  //      GL_MAP1_VERTEX_3
+  //      GL_MAP1_VERTEX_4
+  //      GL_MAP2_COLOR_4
+  //      GL_MAP2_INDEX
+  //      GL_MAP2_NORMAL
+  //      GL_MAP2_TEXTURE_COORD_1
+  //      GL_MAP2_TEXTURE_COORD_2
+  //      GL_MAP2_TEXTURE_COORD_3
+  //      GL_MAP2_TEXTURE_COORD_4
+  //      GL_MAP2_VERTEX_3
+  //      GL_MAP2_VERTEX_4
+
+  // MaterialFace
+  //      GL_FRONT
+  //      GL_BACK
+  //      GL_FRONT_AND_BACK
+
+  // MaterialParameter
+  GL_EMISSION                       = $1600;
+  GL_SHININESS                      = $1601;
+  GL_AMBIENT_AND_DIFFUSE            = $1602;
+  GL_COLOR_INDEXES                  = $1603;
+  //      GL_AMBIENT
+  //      GL_DIFFUSE
+  //      GL_SPECULAR
+
+  // MatrixMode
+  GL_MODELVIEW                      = $1700;
+  GL_PROJECTION                     = $1701;
+  GL_TEXTURE                        = $1702;
+
+  // MeshMode1
+  //      GL_POINT
+  //      GL_LINE
+
+  // MeshMode2
+  //      GL_POINT
+  //      GL_LINE
+  //      GL_FILL
+
+  // NormalPointerType
+  //      GL_BYTE
+  //      GL_SHORT
+  //      GL_INT
+  //      GL_FLOAT
+  //      GL_DOUBLE
+
+  // PixelCopyType
+  GL_COLOR                          = $1800;
+  GL_DEPTH                          = $1801;
+  GL_STENCIL                        = $1802;
+
+  // PixelFormat
+  GL_COLOR_INDEX                    = $1900;
+  GL_STENCIL_INDEX                  = $1901;
+  GL_DEPTH_COMPONENT                = $1902;
+  GL_RED                            = $1903;
+  GL_GREEN                          = $1904;
+  GL_BLUE                           = $1905;
+  GL_ALPHA                          = $1906;
+  GL_RGB                            = $1907;
+  GL_RGBA                           = $1908;
+  GL_LUMINANCE                      = $1909;
+  GL_LUMINANCE_ALPHA                = $190A;
+
+  // PixelMap
+  //      GL_PIXEL_MAP_I_TO_I
+  //      GL_PIXEL_MAP_S_TO_S
+  //      GL_PIXEL_MAP_I_TO_R
+  //      GL_PIXEL_MAP_I_TO_G
+  //      GL_PIXEL_MAP_I_TO_B
+  //      GL_PIXEL_MAP_I_TO_A
+  //      GL_PIXEL_MAP_R_TO_R
+  //      GL_PIXEL_MAP_G_TO_G
+  //      GL_PIXEL_MAP_B_TO_B
+  //      GL_PIXEL_MAP_A_TO_A
+
+  // PixelStore
+  //      GL_UNPACK_SWAP_BYTES
+  //      GL_UNPACK_LSB_FIRST
+  //      GL_UNPACK_ROW_LENGTH
+  //      GL_UNPACK_SKIP_ROWS
+  //      GL_UNPACK_SKIP_PIXELS
+  //      GL_UNPACK_ALIGNMENT
+  //      GL_PACK_SWAP_BYTES
+  //      GL_PACK_LSB_FIRST
+  //      GL_PACK_ROW_LENGTH
+  //      GL_PACK_SKIP_ROWS
+  //      GL_PACK_SKIP_PIXELS
+  //      GL_PACK_ALIGNMENT
+
+  // PixelTransfer
+  //      GL_MAP_COLOR
+  //      GL_MAP_STENCIL
+  //      GL_INDEX_SHIFT
+  //      GL_INDEX_OFFSET
+  //      GL_RED_SCALE
+  //      GL_RED_BIAS
+  //      GL_GREEN_SCALE
+  //      GL_GREEN_BIAS
+  //      GL_BLUE_SCALE
+  //      GL_BLUE_BIAS
+  //      GL_ALPHA_SCALE
+  //      GL_ALPHA_BIAS
+  //      GL_DEPTH_SCALE
+  //      GL_DEPTH_BIAS
+
+  // PixelType
+  GL_BITMAP                         = $1A00;
+  //      GL_BYTE
+  //      GL_UNSIGNED_BYTE
+  //      GL_SHORT
+  //      GL_UNSIGNED_SHORT
+  //      GL_INT
+  //      GL_UNSIGNED_INT
+  //      GL_FLOAT
+
+  // PolygonMode
+  GL_POINT                          = $1B00;
+  GL_LINE                           = $1B01;
+  GL_FILL                           = $1B02;
+
+  // ReadBufferMode
+  //      GL_FRONT_LEFT
+  //      GL_FRONT_RIGHT
+  //      GL_BACK_LEFT
+  //      GL_BACK_RIGHT
+  //      GL_FRONT
+  //      GL_BACK
+  //      GL_LEFT
+  //      GL_RIGHT
+  //      GL_AUX0
+  //      GL_AUX1
+  //      GL_AUX2
+  //      GL_AUX3
+
+  // RenderingMode
+  GL_RENDER                         = $1C00;
+  GL_FEEDBACK                       = $1C01;
+  GL_SELECT                         = $1C02;
+
+  // ShadingModel
+  GL_FLAT                           = $1D00;
+  GL_SMOOTH                         = $1D01;
+
+  // StencilFunction
+  //      GL_NEVER
+  //      GL_LESS
+  //      GL_EQUAL
+  //      GL_LEQUAL
+  //      GL_GREATER
+  //      GL_NOTEQUAL
+  //      GL_GEQUAL
+  //      GL_ALWAYS
+
+  // StencilOp
+  //      GL_ZERO
+  GL_KEEP                           = $1E00;
+  GL_REPLACE                        = $1E01;
+  GL_INCR                           = $1E02;
+  GL_DECR                           = $1E03;
+  //      GL_INVERT
+
+  // StringName
+  GL_VENDOR                         = $1F00;
+  GL_RENDERER                       = $1F01;
+  GL_VERSION                        = $1F02;
+  GL_EXTENSIONS                     = $1F03;
+
+  // TextureCoordName
+  GL_S                              = $2000;
+  GL_T                              = $2001;
+  GL_R                              = $2002;
+  GL_Q                              = $2003;
+
+  // TexCoordPointerType
+  //      GL_SHORT
+  //      GL_INT
+  //      GL_FLOAT
+  //      GL_DOUBLE
+
+  // TextureEnvMode
+  GL_MODULATE                       = $2100;
+  GL_DECAL                          = $2101;
+  //      GL_BLEND
+  //      GL_REPLACE
+
+  // TextureEnvParameter
+  GL_TEXTURE_ENV_MODE               = $2200;
+  GL_TEXTURE_ENV_COLOR              = $2201;
+
+  // TextureEnvTarget
+  GL_TEXTURE_ENV                    = $2300;
+
+  // TextureGenMode
+  GL_EYE_LINEAR                     = $2400;
+  GL_OBJECT_LINEAR                  = $2401;
+  GL_SPHERE_MAP                     = $2402;
+
+  // TextureGenParameter
+  GL_TEXTURE_GEN_MODE               = $2500;
+  GL_OBJECT_PLANE                   = $2501;
+  GL_EYE_PLANE                      = $2502;
+
+  // TextureMagFilter
+  GL_NEAREST                        = $2600;
+  GL_LINEAR                         = $2601;
+
+  // TextureMinFilter
+  //      GL_NEAREST
+  //      GL_LINEAR
+  GL_NEAREST_MIPMAP_NEAREST         = $2700;
+  GL_LINEAR_MIPMAP_NEAREST          = $2701;
+  GL_NEAREST_MIPMAP_LINEAR          = $2702;
+  GL_LINEAR_MIPMAP_LINEAR           = $2703;
+
+  // TextureParameterName
+  GL_TEXTURE_MAG_FILTER             = $2800;
+  GL_TEXTURE_MIN_FILTER             = $2801;
+  GL_TEXTURE_WRAP_S                 = $2802;
+  GL_TEXTURE_WRAP_T                 = $2803;
+  //      GL_TEXTURE_BORDER_COLOR
+  //      GL_TEXTURE_PRIORITY
+
+  // TextureTarget
+  //      GL_TEXTURE_1D
+  //      GL_TEXTURE_2D
+  //      GL_PROXY_TEXTURE_1D
+  //      GL_PROXY_TEXTURE_2D
+
+  // TextureWrapMode
+  GL_CLAMP                          = $2900;
+  GL_REPEAT                         = $2901;
+
+  // VertexPointerType
+  //      GL_SHORT
+  //      GL_INT
+  //      GL_FLOAT
+  //      GL_DOUBLE
+
+  // ClientAttribMask
+  GL_CLIENT_PIXEL_STORE_BIT         = $00000001;
+  GL_CLIENT_VERTEX_ARRAY_BIT        = $00000002;
+  GL_CLIENT_ALL_ATTRIB_BITS         = $FFFFFFFF;
+
+  // polygon_offset
+  GL_POLYGON_OFFSET_FACTOR          = $8038;
+  GL_POLYGON_OFFSET_UNITS           = $2A00;
+  GL_POLYGON_OFFSET_POINT           = $2A01;
+  GL_POLYGON_OFFSET_LINE            = $2A02;
+  GL_POLYGON_OFFSET_FILL            = $8037;
+
+  // texture
+  GL_ALPHA4                         = $803B;
+  GL_ALPHA8                         = $803C;
+  GL_ALPHA12                        = $803D;
+  GL_ALPHA16                        = $803E;
+  GL_LUMINANCE4                     = $803F;
+  GL_LUMINANCE8                     = $8040;
+  GL_LUMINANCE12                    = $8041;
+  GL_LUMINANCE16                    = $8042;
+  GL_LUMINANCE4_ALPHA4              = $8043;
+  GL_LUMINANCE6_ALPHA2              = $8044;
+  GL_LUMINANCE8_ALPHA8              = $8045;
+  GL_LUMINANCE12_ALPHA4             = $8046;
+  GL_LUMINANCE12_ALPHA12            = $8047;
+  GL_LUMINANCE16_ALPHA16            = $8048;
+  GL_INTENSITY                      = $8049;
+  GL_INTENSITY4                     = $804A;
+  GL_INTENSITY8                     = $804B;
+  GL_INTENSITY12                    = $804C;
+  GL_INTENSITY16                    = $804D;
+  GL_R3_G3_B2                       = $2A10;
+  GL_RGB4                           = $804F;
+  GL_RGB5                           = $8050;
+  GL_RGB8                           = $8051;
+  GL_RGB10                          = $8052;
+  GL_RGB12                          = $8053;
+  GL_RGB16                          = $8054;
+  GL_RGBA2                          = $8055;
+  GL_RGBA4                          = $8056;
+  GL_RGB5_A1                        = $8057;
+  GL_RGBA8                          = $8058;
+  GL_RGB10_A2                       = $8059;
+  GL_RGBA12                         = $805A;
+  GL_RGBA16                         = $805B;
+  GL_TEXTURE_RED_SIZE               = $805C;
+  GL_TEXTURE_GREEN_SIZE             = $805D;
+  GL_TEXTURE_BLUE_SIZE              = $805E;
+  GL_TEXTURE_ALPHA_SIZE             = $805F;
+  GL_TEXTURE_LUMINANCE_SIZE         = $8060;
+  GL_TEXTURE_INTENSITY_SIZE         = $8061;
+  GL_PROXY_TEXTURE_1D               = $8063;
+  GL_PROXY_TEXTURE_2D               = $8064;
+
+  // texture_object
+  GL_TEXTURE_PRIORITY               = $8066;
+  GL_TEXTURE_RESIDENT               = $8067;
+  GL_TEXTURE_BINDING_1D             = $8068;
+  GL_TEXTURE_BINDING_2D             = $8069;
+
+  // vertex_array
+  GL_VERTEX_ARRAY                   = $8074;
+  GL_NORMAL_ARRAY                   = $8075;
+  GL_COLOR_ARRAY                    = $8076;
+  GL_INDEX_ARRAY                    = $8077;
+  GL_TEXTURE_COORD_ARRAY            = $8078;
+  GL_EDGE_FLAG_ARRAY                = $8079;
+  GL_VERTEX_ARRAY_SIZE              = $807A;
+  GL_VERTEX_ARRAY_TYPE              = $807B;
+  GL_VERTEX_ARRAY_STRIDE            = $807C;
+  GL_NORMAL_ARRAY_TYPE              = $807E;
+  GL_NORMAL_ARRAY_STRIDE            = $807F;
+  GL_COLOR_ARRAY_SIZE               = $8081;
+  GL_COLOR_ARRAY_TYPE               = $8082;
+  GL_COLOR_ARRAY_STRIDE             = $8083;
+  GL_INDEX_ARRAY_TYPE               = $8085;
+  GL_INDEX_ARRAY_STRIDE             = $8086;
+  GL_TEXTURE_COORD_ARRAY_SIZE       = $8088;
+  GL_TEXTURE_COORD_ARRAY_TYPE       = $8089;
+  GL_TEXTURE_COORD_ARRAY_STRIDE     = $808A;
+  GL_EDGE_FLAG_ARRAY_STRIDE         = $808C;
+  GL_VERTEX_ARRAY_POINTER           = $808E;
+  GL_NORMAL_ARRAY_POINTER           = $808F;
+  GL_COLOR_ARRAY_POINTER            = $8090;
+  GL_INDEX_ARRAY_POINTER            = $8091;
+  GL_TEXTURE_COORD_ARRAY_POINTER    = $8092;
+  GL_EDGE_FLAG_ARRAY_POINTER        = $8093;
+  GL_V2F                            = $2A20;
+  GL_V3F                            = $2A21;
+  GL_C4UB_V2F                       = $2A22;
+  GL_C4UB_V3F                       = $2A23;
+  GL_C3F_V3F                        = $2A24;
+  GL_N3F_V3F                        = $2A25;
+  GL_C4F_N3F_V3F                    = $2A26;
+  GL_T2F_V3F                        = $2A27;
+  GL_T4F_V4F                        = $2A28;
+  GL_T2F_C4UB_V3F                   = $2A29;
+  GL_T2F_C3F_V3F                    = $2A2A;
+  GL_T2F_N3F_V3F                    = $2A2B;
+  GL_T2F_C4F_N3F_V3F                = $2A2C;
+  GL_T4F_C4F_N3F_V4F                = $2A2D;
+
+  // Extensions
+  GL_EXT_vertex_array               = 1;
+  GL_WIN_swap_hint                  = 1;
+  GL_EXT_bgra                       = 1;
+  GL_EXT_paletted_texture           = 1;
+
+  // EXT_vertex_array
+  GL_VERTEX_ARRAY_EXT               = $8074;
+  GL_NORMAL_ARRAY_EXT               = $8075;
+  GL_COLOR_ARRAY_EXT                = $8076;
+  GL_INDEX_ARRAY_EXT                = $8077;
+  GL_TEXTURE_COORD_ARRAY_EXT        = $8078;
+  GL_EDGE_FLAG_ARRAY_EXT            = $8079;
+  GL_VERTEX_ARRAY_SIZE_EXT          = $807A;
+  GL_VERTEX_ARRAY_TYPE_EXT          = $807B;
+  GL_VERTEX_ARRAY_STRIDE_EXT        = $807C;
+  GL_VERTEX_ARRAY_COUNT_EXT         = $807D;
+  GL_NORMAL_ARRAY_TYPE_EXT          = $807E;
+  GL_NORMAL_ARRAY_STRIDE_EXT        = $807F;
+  GL_NORMAL_ARRAY_COUNT_EXT         = $8080;
+  GL_COLOR_ARRAY_SIZE_EXT           = $8081;
+  GL_COLOR_ARRAY_TYPE_EXT           = $8082;
+  GL_COLOR_ARRAY_STRIDE_EXT         = $8083;
+  GL_COLOR_ARRAY_COUNT_EXT          = $8084;
+  GL_INDEX_ARRAY_TYPE_EXT           = $8085;
+  GL_INDEX_ARRAY_STRIDE_EXT         = $8086;
+  GL_INDEX_ARRAY_COUNT_EXT          = $8087;
+  GL_TEXTURE_COORD_ARRAY_SIZE_EXT   = $8088;
+  GL_TEXTURE_COORD_ARRAY_TYPE_EXT   = $8089;
+  GL_TEXTURE_COORD_ARRAY_STRIDE_EXT = $808A;
+  GL_TEXTURE_COORD_ARRAY_COUNT_EXT  = $808B;
+  GL_EDGE_FLAG_ARRAY_STRIDE_EXT     = $808C;
+  GL_EDGE_FLAG_ARRAY_COUNT_EXT      = $808D;
+  GL_VERTEX_ARRAY_POINTER_EXT       = $808E;
+  GL_NORMAL_ARRAY_POINTER_EXT       = $808F;
+  GL_COLOR_ARRAY_POINTER_EXT        = $8090;
+  GL_INDEX_ARRAY_POINTER_EXT        = $8091;
+  GL_TEXTURE_COORD_ARRAY_POINTER_EXT = $8092;
+  GL_EDGE_FLAG_ARRAY_POINTER_EXT    = $8093;
+  GL_DOUBLE_EXT                     = GL_DOUBLE;
+
+  // EXT_bgra 
+  GL_BGR_EXT                        = $80E0;
+  GL_BGRA_EXT                       = $80E1;
+
+  // EXT_paletted_texture
+
+  // These must match the GL_COLOR_TABLE_*_SGI enumerants
+  GL_COLOR_TABLE_FORMAT_EXT         = $80D8;
+  GL_COLOR_TABLE_WIDTH_EXT          = $80D9;
+  GL_COLOR_TABLE_RED_SIZE_EXT       = $80DA;
+  GL_COLOR_TABLE_GREEN_SIZE_EXT     = $80DB;
+  GL_COLOR_TABLE_BLUE_SIZE_EXT      = $80DC;
+  GL_COLOR_TABLE_ALPHA_SIZE_EXT     = $80DD;
+  GL_COLOR_TABLE_LUMINANCE_SIZE_EXT = $80DE;
+  GL_COLOR_TABLE_INTENSITY_SIZE_EXT = $80DF;
+
+  GL_COLOR_INDEX1_EXT               = $80E2;
+  GL_COLOR_INDEX2_EXT               = $80E3;
+  GL_COLOR_INDEX4_EXT               = $80E4;
+  GL_COLOR_INDEX8_EXT               = $80E5;
+  GL_COLOR_INDEX12_EXT              = $80E6;
+  GL_COLOR_INDEX16_EXT              = $80E7;
+
+  // For compatibility with OpenGL v1.0
+  GL_LOGIC_OP                       = GL_INDEX_LOGIC_OP;
+  GL_TEXTURE_COMPONENTS             = GL_TEXTURE_INTERNAL_FORMAT;
+
+{******************************************************************************}
+
+var
+  glAccum: procedure(op: GLenum; value: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAlphaFunc: procedure(func: GLenum; ref: GLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAreTexturesResident: function (n: GLsizei; const textures: PGLuint; residences: PGLboolean): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glArrayElement: procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBegin: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindTexture: procedure(target: GLenum; texture: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBitmap: procedure (width, height: GLsizei; xorig, yorig: GLfloat; xmove, ymove: GLfloat; const bitmap: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBlendFunc: procedure(sfactor, dfactor: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCallList: procedure(list: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCallLists: procedure(n: GLsizei; atype: GLenum; const lists: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClear: procedure(mask: GLbitfield); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearAccum: procedure(red, green, blue, alpha: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearColor: procedure(red, green, blue, alpha: GLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearDepth: procedure(depth: GLclampd); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearIndex: procedure(c: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearStencil: procedure(s: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClipPlane: procedure(plane: GLenum; const equation: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3b: procedure(red, green, blue: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3bv: procedure(const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3d: procedure(red, green, blue: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3f: procedure(red, green, blue: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3i: procedure(red, green, blue: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3s: procedure(red, green, blue: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3ub: procedure(red, green, blue: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3ubv: procedure(const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3ui: procedure(red, green, blue: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3uiv: procedure(const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3us: procedure(red, green, blue: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3usv: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4b: procedure(red, green, blue, alpha: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4bv: procedure(const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4d: procedure(red, green, blue, alpha: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4f: procedure(red, green, blue, alpha: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4i: procedure(red, green, blue, alpha: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4s: procedure(red, green, blue, alpha: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ub: procedure(red, green, blue, alpha: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ubv: procedure(const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ui: procedure(red, green, blue, alpha: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4uiv: procedure(const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4us: procedure(red, green, blue, alpha: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4usv: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorMask: procedure(red, green, blue, alpha: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorMaterial: procedure(face, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyPixels: procedure(x, y: GLint; width, height: GLsizei; atype: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexImage1D: procedure (target: GLenum; level: GLint; internalFormat: GLenum; x, y: GLint; width: GLsizei; border: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexImage2D: procedure(target: GLenum; level: GLint; internalFormat: GLenum; x, y: GLint; width, height: GLsizei; border: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexSubImage1D: procedure(target: GLenum; level, xoffset, x, y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexSubImage2D: procedure(target: GLenum; level, xoffset, yoffset, x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCullFace: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteLists: procedure(list: GLuint; range: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteTextures: procedure(n: GLsizei; const textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDepthFunc: procedure(func: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDepthMask: procedure(flag: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDepthRange: procedure(zNear, zFar: GLclampd); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDisable: procedure(cap: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDisableClientState: procedure(aarray: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawArrays: procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawBuffer: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawElements: procedure(mode: GLenum; count: GLsizei; atype: GLenum; const indices: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawPixels: procedure(width, height: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlag: procedure(flag: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagPointer: procedure(stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagv: procedure(const flag: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnable: procedure(cap: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnableClientState: procedure(aarray: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnd: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndList: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1d: procedure(u: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1dv: procedure(const u: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1f: procedure(u: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1fv: procedure(const u: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2d: procedure(u, v: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2dv: procedure(const u: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2f: procedure(u, v: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2fv: procedure(const u: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalMesh1: procedure(mode: GLenum; i1, i2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalMesh2: procedure(mode: GLenum; i1, i2, j1, j2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalPoint1: procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalPoint2: procedure(i, j: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFeedbackBuffer: procedure(size: GLsizei; atype: GLenum; buffer: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFinish: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFlush: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogfv: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogi: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogiv: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFrontFace: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFrustum: procedure(left, right, bottom, top, zNear, zFar: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenLists: function(range: GLsizei): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenTextures: procedure(n: GLsizei; textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBooleanv: procedure(pname: GLenum; params: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetClipPlane: procedure(plane: GLenum; equation: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetDoublev: procedure(pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetError: function: GLenum; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFloatv: procedure(pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetIntegerv: procedure(pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLightfv: procedure(light, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLightiv: procedure(light, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapdv: procedure(target, query: GLenum; v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapfv: procedure(target, query: GLenum; v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapiv: procedure(target, query: GLenum; v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMaterialfv: procedure(face, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMaterialiv: procedure(face, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapfv: procedure(map: GLenum; values: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapuiv: procedure(map: GLenum; values: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapusv: procedure(map: GLenum; values: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPointerv: procedure(pname: GLenum; params: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPolygonStipple: procedure(mask: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetString: function(name: GLenum): PChar; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexEnvfv: procedure(target, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexEnviv: procedure(target, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGendv: procedure(coord, pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGenfv: procedure(coord, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGeniv: procedure(coord, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexImage: procedure(target: GLenum; level: GLint; format: GLenum; atype: GLenum; pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexLevelParameterfv: procedure(target: GLenum; level: GLint; pname: GLenum; params: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexLevelParameteriv: procedure(target: GLenum; level: GLint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexParameterfv: procedure(target, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexParameteriv: procedure(target, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glHint: procedure(target, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexMask: procedure(mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexPointer: procedure(atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexd: procedure(c: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexdv: procedure(const c: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexf: procedure(c: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexfv: procedure(const c: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexi: procedure(c: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexiv: procedure(const c: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexs: procedure(c: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexsv: procedure(const c: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexub: procedure(c: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexubv: procedure(const c: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glInitNames: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glInterleavedArrays: procedure(format: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsEnabled: function(cap: GLenum): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsList: function(list: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsTexture: function(texture: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModelf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModelfv: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModeli: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModeliv: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightf: procedure(light, pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightfv: procedure(light, pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLighti: procedure(light, pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightiv: procedure(light, pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLineStipple: procedure(factor: GLint; pattern: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLineWidth: procedure(width: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glListBase: procedure(base: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadIdentity: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadName: procedure(name: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLogicOp: procedure(opcode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap1d: procedure(target: GLenum; u1, u2: GLdouble; stride, order: GLint; const points: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap1f: procedure(target: GLenum; u1, u2: GLfloat; stride, order: GLint; const points: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap2d: procedure(target: GLenum; u1, u2: GLdouble; ustride, uorder: GLint; v1, v2: GLdouble; vstride, vorder: GLint; const points: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap2f: procedure(target: GLenum; u1, u2: GLfloat; ustride, uorder: GLint; v1, v2: GLfloat; vstride, vorder: GLint; const points: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid1d: procedure(un: GLint; u1, u2: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid1f: procedure(un: GLint; u1, u2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid2d: procedure(un: GLint; u1, u2: GLdouble; vn: GLint; v1, v2: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid2f: procedure(un: GLint; u1, u2: GLfloat; vn: GLint; v1, v2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialf: procedure(face, pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialfv: procedure(face, pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMateriali: procedure(face, pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialiv: procedure(face, pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMatrixMode: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNewList: procedure(list: GLuint; mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3b: procedure(nx, ny, nz: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3bv: procedure(const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3d: procedure(nx, ny, nz: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3f: procedure(nx, ny, nz: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3i: procedure(nx, ny, nz: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3s: procedure(nx, ny, nz: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalPointer: procedure(atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glOrtho: procedure(left, right, bottom, top, zNear, zFar: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPassThrough: procedure(token: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapfv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapuiv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapusv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelStoref: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelStorei: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelTransferf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelTransferi: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelZoom: procedure(xfactor, yfactor: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointSize: procedure(size: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonMode: procedure(face, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonOffset: procedure(factor, units: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonStipple: procedure(const mask: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPopAttrib: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPopClientAttrib: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPopMatrix: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPopName: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPrioritizeTextures: procedure(n: GLsizei; const textures: PGLuint; const priorities: PGLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushAttrib: procedure(mask: GLbitfield); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushClientAttrib: procedure(mask: GLbitfield); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushMatrix: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushName: procedure(name: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2d: procedure(x, y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2f: procedure(x, y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2i: procedure(x, y: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2s: procedure(x, y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos2sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3d: procedure(x, y, z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3f: procedure(x, y, z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3i: procedure(x, y, z: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3s: procedure(x, y, z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4d: procedure(x, y, z, w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4f: procedure(x, y, z, w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4i: procedure(x, y, z, w: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4s: procedure(x, y, z, w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRasterPos4sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReadBuffer: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReadPixels: procedure(x, y: GLint; width, height: GLsizei; format, atype: GLenum; pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectd: procedure(x1, y1, x2, y2: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectdv: procedure(const v1: PGLdouble; const v2: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectf: procedure(x1, y1, x2, y2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectfv: procedure(const v1: PGLfloat; const v2: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRecti: procedure(x1, y1, x2, y2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectiv: procedure(const v1: PGLint; const v2: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRects: procedure(x1, y1, x2, y2: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRectsv: procedure(const v1: PGLshort; const v2: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRenderMode: function(mode: GLint): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRotated: procedure(angle, x, y, z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRotatef: procedure(angle, x, y, z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glScaled: procedure(x, y, z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glScalef: procedure(x, y, z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glScissor: procedure(x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSelectBuffer: procedure(size: GLsizei; buffer: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShadeModel: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilFunc: procedure(func: GLenum; ref: GLint; mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilMask: procedure(mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilOp: procedure(fail, zfail, zpass: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1d: procedure(s: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1f: procedure(s: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1i: procedure(s: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1s: procedure(s: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2d: procedure(s, t: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2f: procedure(s, t: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2i: procedure(s, t: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2s: procedure(s, t: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3d: procedure(s, t, r: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3f: procedure(s, t, r: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3i: procedure(s, t, r: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3s: procedure(s, t, r: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4d: procedure(s, t, r, q: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4f: procedure(s, t, r, q: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4i: procedure(s, t, r, q: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4s: procedure(s, t, r, q: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoordPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvf: procedure(target: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvi: procedure(target: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnviv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGend: procedure(coord: GLenum; pname: GLenum; param: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGendv: procedure(coord: GLenum; pname: GLenum; const params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGenf: procedure(coord: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGenfv: procedure(coord: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGeni: procedure(coord: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGeniv: procedure(coord: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexImage1D: procedure(target: GLenum; level, internalformat: GLint; width: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexImage2D: procedure(target: GLenum; level, internalformat: GLint; width, height: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameterf: procedure(target: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameterfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameteri: procedure(target: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameteriv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage1D: procedure(target: GLenum; level, xoffset: GLint; width: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage2D: procedure(target: GLenum; level, xoffset, yoffset: GLint; width, height: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTranslated: procedure(x, y, z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTranslatef: procedure(x, y, z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2d: procedure(x, y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2f: procedure(x, y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2i: procedure(x, y: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2s: procedure(x, y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3d: procedure(x, y, z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3f: procedure(x, y, z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3i: procedure(x, y, z: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3s: procedure(x, y, z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4d: procedure(x, y, z, w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4f: procedure(x, y, z, w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4i: procedure(x, y, z, w: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4s: procedure(x, y, z, w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glViewport: procedure(x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  {$IFDEF WINDOWS}
+  ChoosePixelFormat: function(DC: HDC; p2: PPixelFormatDescriptor): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  {$ENDIF}
+
+type
+  // EXT_vertex_array
+  PFNGLARRAYELEMENTEXTPROC = procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLDRAWARRAYSEXTPROC = procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLVERTEXPOINTEREXTPROC = procedure(size: GLint; atype: GLenum;
+                                        stride, count: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLNORMALPOINTEREXTPROC = procedure(atype: GLenum; stride, count: GLsizei;
+                                        const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLCOLORPOINTEREXTPROC = procedure(size: GLint; atype: GLenum; stride, count: GLsizei;
+                                       const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLINDEXPOINTEREXTPROC = procedure(atype: GLenum; stride, count: GLsizei;
+                                       const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLTEXCOORDPOINTEREXTPROC = procedure(size: GLint; atype: GLenum;
+                                          stride, count: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLEDGEFLAGPOINTEREXTPROC = procedure(stride, count: GLsizei;
+                                          const pointer: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLGETPOINTERVEXTPROC = procedure(pname: GLenum; params: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLARRAYELEMENTARRAYEXTPROC = procedure(mode: GLenum; count: GLsizei;
+                                            const pi: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  // WIN_swap_hint
+  PFNGLADDSWAPHINTRECTWINPROC = procedure(x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  // EXT_paletted_texture
+  PFNGLCOLORTABLEEXTPROC = procedure(target, internalFormat: GLenum; width: GLsizei;
+                                     format, atype: GLenum; const data: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLCOLORSUBTABLEEXTPROC = procedure(target: GLenum; start, count: GLsizei;
+                                        format, atype: GLenum; const data: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLGETCOLORTABLEEXTPROC = procedure(target, format, atype: GLenum; data: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLGETCOLORTABLEPARAMETERIVEXTPROC = procedure(target, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  PFNGLGETCOLORTABLEPARAMETERFVEXTPROC = procedure(target, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+procedure LoadOpenGL( const dll: PChar );
+procedure FreeOpenGL;
+
+implementation
+
+procedure FreeOpenGL;
+begin
+
+  @glAccum := nil;
+  @glAlphaFunc := nil;
+  @glAreTexturesResident := nil;
+  @glArrayElement := nil;
+  @glBegin := nil;
+  @glBindTexture := nil;
+  @glBitmap := nil;
+  @glBlendFunc := nil;
+  @glCallList := nil;
+  @glCallLists := nil;
+  @glClear := nil;
+  @glClearAccum := nil;
+  @glClearColor := nil;
+  @glClearDepth := nil;
+  @glClearIndex := nil;
+  @glClearStencil := nil;
+  @glClipPlane := nil;
+  @glColor3b := nil;
+  @glColor3bv := nil;
+  @glColor3d := nil;
+  @glColor3dv := nil;
+  @glColor3f := nil;
+  @glColor3fv := nil;
+  @glColor3i := nil;
+  @glColor3iv := nil;
+  @glColor3s := nil;
+  @glColor3sv := nil;
+  @glColor3ub := nil;
+  @glColor3ubv := nil;
+  @glColor3ui := nil;
+  @glColor3uiv := nil;
+  @glColor3us := nil;
+  @glColor3usv := nil;
+  @glColor4b := nil;
+  @glColor4bv := nil;
+  @glColor4d := nil;
+  @glColor4dv := nil;
+  @glColor4f := nil;
+  @glColor4fv := nil;
+  @glColor4i := nil;
+  @glColor4iv := nil;
+  @glColor4s := nil;
+  @glColor4sv := nil;
+  @glColor4ub := nil;
+  @glColor4ubv := nil;
+  @glColor4ui := nil;
+  @glColor4uiv := nil;
+  @glColor4us := nil;
+  @glColor4usv := nil;
+  @glColorMask := nil;
+  @glColorMaterial := nil;
+  @glColorPointer := nil;
+  @glCopyPixels := nil;
+  @glCopyTexImage1D := nil;
+  @glCopyTexImage2D := nil;
+  @glCopyTexSubImage1D := nil;
+  @glCopyTexSubImage2D := nil;
+  @glCullFace := nil;
+  @glDeleteLists := nil;
+  @glDeleteTextures := nil;
+  @glDepthFunc := nil;
+  @glDepthMask := nil;
+  @glDepthRange := nil;
+  @glDisable := nil;
+  @glDisableClientState := nil;
+  @glDrawArrays := nil;
+  @glDrawBuffer := nil;
+  @glDrawElements := nil;
+  @glDrawPixels := nil;
+  @glEdgeFlag := nil;
+  @glEdgeFlagPointer := nil;
+  @glEdgeFlagv := nil;
+  @glEnable := nil;
+  @glEnableClientState := nil;
+  @glEnd := nil;
+  @glEndList := nil;
+  @glEvalCoord1d := nil;
+  @glEvalCoord1dv := nil;
+  @glEvalCoord1f := nil;
+  @glEvalCoord1fv := nil;
+  @glEvalCoord2d := nil;
+  @glEvalCoord2dv := nil;
+  @glEvalCoord2f := nil;
+  @glEvalCoord2fv := nil;
+  @glEvalMesh1 := nil;
+  @glEvalMesh2 := nil;
+  @glEvalPoint1 := nil;
+  @glEvalPoint2 := nil;
+  @glFeedbackBuffer := nil;
+  @glFinish := nil;
+  @glFlush := nil;
+  @glFogf := nil;
+  @glFogfv := nil;
+  @glFogi := nil;
+  @glFogiv := nil;
+  @glFrontFace := nil;
+  @glFrustum := nil;
+  @glGenLists := nil;
+  @glGenTextures := nil;
+  @glGetBooleanv := nil;
+  @glGetClipPlane := nil;
+  @glGetDoublev := nil;
+  @glGetError := nil;
+  @glGetFloatv := nil;
+  @glGetIntegerv := nil;
+  @glGetLightfv := nil;
+  @glGetLightiv := nil;
+  @glGetMapdv := nil;
+  @glGetMapfv := nil;
+  @glGetMapiv := nil;
+  @glGetMaterialfv := nil;
+  @glGetMaterialiv := nil;
+  @glGetPixelMapfv := nil;
+  @glGetPixelMapuiv := nil;
+  @glGetPixelMapusv := nil;
+  @glGetPointerv := nil;
+  @glGetPolygonStipple := nil;
+  @glGetString := nil;
+  @glGetTexEnvfv := nil;
+  @glGetTexEnviv := nil;
+  @glGetTexGendv := nil;
+  @glGetTexGenfv := nil;
+  @glGetTexGeniv := nil;
+  @glGetTexImage := nil;
+  @glGetTexLevelParameterfv := nil;
+  @glGetTexLevelParameteriv := nil;
+  @glGetTexParameterfv := nil;
+  @glGetTexParameteriv := nil;
+  @glHint := nil;
+  @glIndexMask := nil;
+  @glIndexPointer := nil;
+  @glIndexd := nil;
+  @glIndexdv := nil;
+  @glIndexf := nil;
+  @glIndexfv := nil;
+  @glIndexi := nil;
+  @glIndexiv := nil;
+  @glIndexs := nil;
+  @glIndexsv := nil;
+  @glIndexub := nil;
+  @glIndexubv := nil;
+  @glInitNames := nil;
+  @glInterleavedArrays := nil;
+  @glIsEnabled := nil;
+  @glIsList := nil;
+  @glIsTexture := nil;
+  @glLightModelf := nil;
+  @glLightModelfv := nil;
+  @glLightModeli := nil;
+  @glLightModeliv := nil;
+  @glLightf := nil;
+  @glLightfv := nil;
+  @glLighti := nil;
+  @glLightiv := nil;
+  @glLineStipple := nil;
+  @glLineWidth := nil;
+  @glListBase := nil;
+  @glLoadIdentity := nil;
+  @glLoadMatrixd := nil;
+  @glLoadMatrixf := nil;
+  @glLoadName := nil;
+  @glLogicOp := nil;
+  @glMap1d := nil;
+  @glMap1f := nil;
+  @glMap2d := nil;
+  @glMap2f := nil;
+  @glMapGrid1d := nil;
+  @glMapGrid1f := nil;
+  @glMapGrid2d := nil;
+  @glMapGrid2f := nil;
+  @glMaterialf := nil;
+  @glMaterialfv := nil;
+  @glMateriali := nil;
+  @glMaterialiv := nil;
+  @glMatrixMode := nil;
+  @glMultMatrixd := nil;
+  @glMultMatrixf := nil;
+  @glNewList := nil;
+  @glNormal3b := nil;
+  @glNormal3bv := nil;
+  @glNormal3d := nil;
+  @glNormal3dv := nil;
+  @glNormal3f := nil;
+  @glNormal3fv := nil;
+  @glNormal3i := nil;
+  @glNormal3iv := nil;
+  @glNormal3s := nil;
+  @glNormal3sv := nil;
+  @glNormalPointer := nil;
+  @glOrtho := nil;
+  @glPassThrough := nil;
+  @glPixelMapfv := nil;
+  @glPixelMapuiv := nil;
+  @glPixelMapusv := nil;
+  @glPixelStoref := nil;
+  @glPixelStorei := nil;
+  @glPixelTransferf := nil;
+  @glPixelTransferi := nil;
+  @glPixelZoom := nil;
+  @glPointSize := nil;
+  @glPolygonMode := nil;
+  @glPolygonOffset := nil;
+  @glPolygonStipple := nil;
+  @glPopAttrib := nil;
+  @glPopClientAttrib := nil;
+  @glPopMatrix := nil;
+  @glPopName := nil;
+  @glPrioritizeTextures := nil;
+  @glPushAttrib := nil;
+  @glPushClientAttrib := nil;
+  @glPushMatrix := nil;
+  @glPushName := nil;
+  @glRasterPos2d := nil;
+  @glRasterPos2dv := nil;
+  @glRasterPos2f := nil;
+  @glRasterPos2fv := nil;
+  @glRasterPos2i := nil;
+  @glRasterPos2iv := nil;
+  @glRasterPos2s := nil;
+  @glRasterPos2sv := nil;
+  @glRasterPos3d := nil;
+  @glRasterPos3dv := nil;
+  @glRasterPos3f := nil;
+  @glRasterPos3fv := nil;
+  @glRasterPos3i := nil;
+  @glRasterPos3iv := nil;
+  @glRasterPos3s := nil;
+  @glRasterPos3sv := nil;
+  @glRasterPos4d := nil;
+  @glRasterPos4dv := nil;
+  @glRasterPos4f := nil;
+  @glRasterPos4fv := nil;
+  @glRasterPos4i := nil;
+  @glRasterPos4iv := nil;
+  @glRasterPos4s := nil;
+  @glRasterPos4sv := nil;
+  @glReadBuffer := nil;
+  @glReadPixels := nil;
+  @glRectd := nil;
+  @glRectdv := nil;
+  @glRectf := nil;
+  @glRectfv := nil;
+  @glRecti := nil;
+  @glRectiv := nil;
+  @glRects := nil;
+  @glRectsv := nil;
+  @glRenderMode := nil;
+  @glRotated := nil;
+  @glRotatef := nil;
+  @glScaled := nil;
+  @glScalef := nil;
+  @glScissor := nil;
+  @glSelectBuffer := nil;
+  @glShadeModel := nil;
+  @glStencilFunc := nil;
+  @glStencilMask := nil;
+  @glStencilOp := nil;
+  @glTexCoord1d := nil;
+  @glTexCoord1dv := nil;
+  @glTexCoord1f := nil;
+  @glTexCoord1fv := nil;
+  @glTexCoord1i := nil;
+  @glTexCoord1iv := nil;
+  @glTexCoord1s := nil;
+  @glTexCoord1sv := nil;
+  @glTexCoord2d := nil;
+  @glTexCoord2dv := nil;
+  @glTexCoord2f := nil;
+  @glTexCoord2fv := nil;
+  @glTexCoord2i := nil;
+  @glTexCoord2iv := nil;
+  @glTexCoord2s := nil;
+  @glTexCoord2sv := nil;
+  @glTexCoord3d := nil;
+  @glTexCoord3dv := nil;
+  @glTexCoord3f := nil;
+  @glTexCoord3fv := nil;
+  @glTexCoord3i := nil;
+  @glTexCoord3iv := nil;
+  @glTexCoord3s := nil;
+  @glTexCoord3sv := nil;
+  @glTexCoord4d := nil;
+  @glTexCoord4dv := nil;
+  @glTexCoord4f := nil;
+  @glTexCoord4fv := nil;
+  @glTexCoord4i := nil;
+  @glTexCoord4iv := nil;
+  @glTexCoord4s := nil;
+  @glTexCoord4sv := nil;
+  @glTexCoordPointer := nil;
+  @glTexEnvf := nil;
+  @glTexEnvfv := nil;
+  @glTexEnvi := nil;
+  @glTexEnviv := nil;
+  @glTexGend := nil;
+  @glTexGendv := nil;
+  @glTexGenf := nil;
+  @glTexGenfv := nil;
+  @glTexGeni := nil;
+  @glTexGeniv := nil;
+  @glTexImage1D := nil;
+  @glTexImage2D := nil;
+  @glTexParameterf := nil;
+  @glTexParameterfv := nil;
+  @glTexParameteri := nil;
+  @glTexParameteriv := nil;
+  @glTexSubImage1D := nil;
+  @glTexSubImage2D := nil;
+  @glTranslated := nil;
+  @glTranslatef := nil;
+  @glVertex2d := nil;
+  @glVertex2dv := nil;
+  @glVertex2f := nil;
+  @glVertex2fv := nil;
+  @glVertex2i := nil;
+  @glVertex2iv := nil;
+  @glVertex2s := nil;
+  @glVertex2sv := nil;
+  @glVertex3d := nil;
+  @glVertex3dv := nil;
+  @glVertex3f := nil;
+  @glVertex3fv := nil;
+  @glVertex3i := nil;
+  @glVertex3iv := nil;
+  @glVertex3s := nil;
+  @glVertex3sv := nil;
+  @glVertex4d := nil;
+  @glVertex4dv := nil;
+  @glVertex4f := nil;
+  @glVertex4fv := nil;
+  @glVertex4i := nil;
+  @glVertex4iv := nil;
+  @glVertex4s := nil;
+  @glVertex4sv := nil;
+  @glVertexPointer := nil;
+  @glViewport := nil;
+  {$IFDEF WINDOWS}
+  @ChoosePixelFormat := nil;
+  {$ENDIF}
+
+  UnLoadModule(LibGL);
+
+end;
+
+procedure LoadOpenGL(const dll: PChar);
+begin
+
+  FreeOpenGL;
+
+  if LoadModule( LibGL, dll ) then
+  begin
+    @glAccum := GetModuleSymbol(LibGL, 'glAccum');
+    @glAlphaFunc := GetModuleSymbol(LibGL, 'glAlphaFunc');
+    @glAreTexturesResident := GetModuleSymbol(LibGL, 'glAreTexturesResident');
+    @glArrayElement := GetModuleSymbol(LibGL, 'glArrayElement');
+    @glBegin := GetModuleSymbol(LibGL, 'glBegin');
+    @glBindTexture := GetModuleSymbol(LibGL, 'glBindTexture');
+    @glBitmap := GetModuleSymbol(LibGL, 'glBitmap');
+    @glBlendFunc := GetModuleSymbol(LibGL, 'glBlendFunc');
+    @glCallList := GetModuleSymbol(LibGL, 'glCallList');
+    @glCallLists := GetModuleSymbol(LibGL, 'glCallLists');
+    @glClear := GetModuleSymbol(LibGL, 'glClear');
+    @glClearAccum := GetModuleSymbol(LibGL, 'glClearAccum');
+    @glClearColor := GetModuleSymbol(LibGL, 'glClearColor');
+    @glClearDepth := GetModuleSymbol(LibGL, 'glClearDepth');
+    @glClearIndex := GetModuleSymbol(LibGL, 'glClearIndex');
+    @glClearStencil := GetModuleSymbol(LibGL, 'glClearStencil');
+    @glClipPlane := GetModuleSymbol(LibGL, 'glClipPlane');
+    @glColor3b := GetModuleSymbol(LibGL, 'glColor3b');
+    @glColor3bv := GetModuleSymbol(LibGL, 'glColor3bv');
+    @glColor3d := GetModuleSymbol(LibGL, 'glColor3d');
+    @glColor3dv := GetModuleSymbol(LibGL, 'glColor3dv');
+    @glColor3f := GetModuleSymbol(LibGL, 'glColor3f');
+    @glColor3fv := GetModuleSymbol(LibGL, 'glColor3fv');
+    @glColor3i := GetModuleSymbol(LibGL, 'glColor3i');
+    @glColor3iv := GetModuleSymbol(LibGL, 'glColor3iv');
+    @glColor3s := GetModuleSymbol(LibGL, 'glColor3s');
+    @glColor3sv := GetModuleSymbol(LibGL, 'glColor3sv');
+    @glColor3ub := GetModuleSymbol(LibGL, 'glColor3ub');
+    @glColor3ubv := GetModuleSymbol(LibGL, 'glColor3ubv');
+    @glColor3ui := GetModuleSymbol(LibGL, 'glColor3ui');
+    @glColor3uiv := GetModuleSymbol(LibGL, 'glColor3uiv');
+    @glColor3us := GetModuleSymbol(LibGL, 'glColor3us');
+    @glColor3usv := GetModuleSymbol(LibGL, 'glColor3usv');
+    @glColor4b := GetModuleSymbol(LibGL, 'glColor4b');
+    @glColor4bv := GetModuleSymbol(LibGL, 'glColor4bv');
+    @glColor4d := GetModuleSymbol(LibGL, 'glColor4d');
+    @glColor4dv := GetModuleSymbol(LibGL, 'glColor4dv');
+    @glColor4f := GetModuleSymbol(LibGL, 'glColor4f');
+    @glColor4fv := GetModuleSymbol(LibGL, 'glColor4fv');
+    @glColor4i := GetModuleSymbol(LibGL, 'glColor4i');
+    @glColor4iv := GetModuleSymbol(LibGL, 'glColor4iv');
+    @glColor4s := GetModuleSymbol(LibGL, 'glColor4s');
+    @glColor4sv := GetModuleSymbol(LibGL, 'glColor4sv');
+    @glColor4ub := GetModuleSymbol(LibGL, 'glColor4ub');
+    @glColor4ubv := GetModuleSymbol(LibGL, 'glColor4ubv');
+    @glColor4ui := GetModuleSymbol(LibGL, 'glColor4ui');
+    @glColor4uiv := GetModuleSymbol(LibGL, 'glColor4uiv');
+    @glColor4us := GetModuleSymbol(LibGL, 'glColor4us');
+    @glColor4usv := GetModuleSymbol(LibGL, 'glColor4usv');
+    @glColorMask := GetModuleSymbol(LibGL, 'glColorMask');
+    @glColorMaterial := GetModuleSymbol(LibGL, 'glColorMaterial');
+    @glColorPointer := GetModuleSymbol(LibGL, 'glColorPointer');
+    @glCopyPixels := GetModuleSymbol(LibGL, 'glCopyPixels');
+    @glCopyTexImage1D := GetModuleSymbol(LibGL, 'glCopyTexImage1D');
+    @glCopyTexImage2D := GetModuleSymbol(LibGL, 'glCopyTexImage2D');
+    @glCopyTexSubImage1D := GetModuleSymbol(LibGL, 'glCopyTexSubImage1D');
+    @glCopyTexSubImage2D := GetModuleSymbol(LibGL, 'glCopyTexSubImage2D');
+    @glCullFace := GetModuleSymbol(LibGL, 'glCullFace');
+    @glDeleteLists := GetModuleSymbol(LibGL, 'glDeleteLists');
+    @glDeleteTextures := GetModuleSymbol(LibGL, 'glDeleteTextures');
+    @glDepthFunc := GetModuleSymbol(LibGL, 'glDepthFunc');
+    @glDepthMask := GetModuleSymbol(LibGL, 'glDepthMask');
+    @glDepthRange := GetModuleSymbol(LibGL, 'glDepthRange');
+    @glDisable := GetModuleSymbol(LibGL, 'glDisable');
+    @glDisableClientState := GetModuleSymbol(LibGL, 'glDisableClientState');
+    @glDrawArrays := GetModuleSymbol(LibGL, 'glDrawArrays');
+    @glDrawBuffer := GetModuleSymbol(LibGL, 'glDrawBuffer');
+    @glDrawElements := GetModuleSymbol(LibGL, 'glDrawElements');
+    @glDrawPixels := GetModuleSymbol(LibGL, 'glDrawPixels');
+    @glEdgeFlag := GetModuleSymbol(LibGL, 'glEdgeFlag');
+    @glEdgeFlagPointer := GetModuleSymbol(LibGL, 'glEdgeFlagPointer');
+    @glEdgeFlagv := GetModuleSymbol(LibGL, 'glEdgeFlagv');
+    @glEnable := GetModuleSymbol(LibGL, 'glEnable');
+    @glEnableClientState := GetModuleSymbol(LibGL, 'glEnableClientState');
+    @glEnd := GetModuleSymbol(LibGL, 'glEnd');
+    @glEndList := GetModuleSymbol(LibGL, 'glEndList');
+    @glEvalCoord1d := GetModuleSymbol(LibGL, 'glEvalCoord1d');
+    @glEvalCoord1dv := GetModuleSymbol(LibGL, 'glEvalCoord1dv');
+    @glEvalCoord1f := GetModuleSymbol(LibGL, 'glEvalCoord1f');
+    @glEvalCoord1fv := GetModuleSymbol(LibGL, 'glEvalCoord1fv');
+    @glEvalCoord2d := GetModuleSymbol(LibGL, 'glEvalCoord2d');
+    @glEvalCoord2dv := GetModuleSymbol(LibGL, 'glEvalCoord2dv');
+    @glEvalCoord2f := GetModuleSymbol(LibGL, 'glEvalCoord2f');
+    @glEvalCoord2fv := GetModuleSymbol(LibGL, 'glEvalCoord2fv');
+    @glEvalMesh1 := GetModuleSymbol(LibGL, 'glEvalMesh1');
+    @glEvalMesh2 := GetModuleSymbol(LibGL, 'glEvalMesh2');
+    @glEvalPoint1 := GetModuleSymbol(LibGL, 'glEvalPoint1');
+    @glEvalPoint2 := GetModuleSymbol(LibGL, 'glEvalPoint2');
+    @glFeedbackBuffer := GetModuleSymbol(LibGL, 'glFeedbackBuffer');
+    @glFinish := GetModuleSymbol(LibGL, 'glFinish');
+    @glFlush := GetModuleSymbol(LibGL, 'glFlush');
+    @glFogf := GetModuleSymbol(LibGL, 'glFogf');
+    @glFogfv := GetModuleSymbol(LibGL, 'glFogfv');
+    @glFogi := GetModuleSymbol(LibGL, 'glFogi');
+    @glFogiv := GetModuleSymbol(LibGL, 'glFogiv');
+    @glFrontFace := GetModuleSymbol(LibGL, 'glFrontFace');
+    @glFrustum := GetModuleSymbol(LibGL, 'glFrustum');
+    @glGenLists := GetModuleSymbol(LibGL, 'glGenLists');
+    @glGenTextures := GetModuleSymbol(LibGL, 'glGenTextures');
+    @glGetBooleanv := GetModuleSymbol(LibGL, 'glGetBooleanv');
+    @glGetClipPlane := GetModuleSymbol(LibGL, 'glGetClipPlane');
+    @glGetDoublev := GetModuleSymbol(LibGL, 'glGetDoublev');
+    @glGetError := GetModuleSymbol(LibGL, 'glGetError');
+    @glGetFloatv := GetModuleSymbol(LibGL, 'glGetFloatv');
+    @glGetIntegerv := GetModuleSymbol(LibGL, 'glGetIntegerv');
+    @glGetLightfv := GetModuleSymbol(LibGL, 'glGetLightfv');
+    @glGetLightiv := GetModuleSymbol(LibGL, 'glGetLightiv');
+    @glGetMapdv := GetModuleSymbol(LibGL, 'glGetMapdv');
+    @glGetMapfv := GetModuleSymbol(LibGL, 'glGetMapfv');
+    @glGetMapiv := GetModuleSymbol(LibGL, 'glGetMapiv');
+    @glGetMaterialfv := GetModuleSymbol(LibGL, 'glGetMaterialfv');
+    @glGetMaterialiv := GetModuleSymbol(LibGL, 'glGetMaterialiv');
+    @glGetPixelMapfv := GetModuleSymbol(LibGL, 'glGetPixelMapfv');
+    @glGetPixelMapuiv := GetModuleSymbol(LibGL, 'glGetPixelMapuiv');
+    @glGetPixelMapusv := GetModuleSymbol(LibGL, 'glGetPixelMapusv');
+    @glGetPointerv := GetModuleSymbol(LibGL, 'glGetPointerv');
+    @glGetPolygonStipple := GetModuleSymbol(LibGL, 'glGetPolygonStipple');
+    @glGetString := GetModuleSymbol(LibGL, 'glGetString');
+    @glGetTexEnvfv := GetModuleSymbol(LibGL, 'glGetTexEnvfv');
+    @glGetTexEnviv := GetModuleSymbol(LibGL, 'glGetTexEnviv');
+    @glGetTexGendv := GetModuleSymbol(LibGL, 'glGetTexGendv');
+    @glGetTexGenfv := GetModuleSymbol(LibGL, 'glGetTexGenfv');
+    @glGetTexGeniv := GetModuleSymbol(LibGL, 'glGetTexGeniv');
+    @glGetTexImage := GetModuleSymbol(LibGL, 'glGetTexImage');
+    @glGetTexLevelParameterfv := GetModuleSymbol(LibGL, 'glGetTexLevelParameterfv');
+    @glGetTexLevelParameteriv := GetModuleSymbol(LibGL, 'glGetTexLevelParameteriv');
+    @glGetTexParameterfv := GetModuleSymbol(LibGL, 'glGetTexParameterfv');
+    @glGetTexParameteriv := GetModuleSymbol(LibGL, 'glGetTexParameteriv');
+    @glHint := GetModuleSymbol(LibGL, 'glHint');
+    @glIndexMask := GetModuleSymbol(LibGL, 'glIndexMask');
+    @glIndexPointer := GetModuleSymbol(LibGL, 'glIndexPointer');
+    @glIndexd := GetModuleSymbol(LibGL, 'glIndexd');
+    @glIndexdv := GetModuleSymbol(LibGL, 'glIndexdv');
+    @glIndexf := GetModuleSymbol(LibGL, 'glIndexf');
+    @glIndexfv := GetModuleSymbol(LibGL, 'glIndexfv');
+    @glIndexi := GetModuleSymbol(LibGL, 'glIndexi');
+    @glIndexiv := GetModuleSymbol(LibGL, 'glIndexiv');
+    @glIndexs := GetModuleSymbol(LibGL, 'glIndexs');
+    @glIndexsv := GetModuleSymbol(LibGL, 'glIndexsv');
+    @glIndexub := GetModuleSymbol(LibGL, 'glIndexub');
+    @glIndexubv := GetModuleSymbol(LibGL, 'glIndexubv');
+    @glInitNames := GetModuleSymbol(LibGL, 'glInitNames');
+    @glInterleavedArrays := GetModuleSymbol(LibGL, 'glInterleavedArrays');
+    @glIsEnabled := GetModuleSymbol(LibGL, 'glIsEnabled');
+    @glIsList := GetModuleSymbol(LibGL, 'glIsList');
+    @glIsTexture := GetModuleSymbol(LibGL, 'glIsTexture');
+    @glLightModelf := GetModuleSymbol(LibGL, 'glLightModelf');
+    @glLightModelfv := GetModuleSymbol(LibGL, 'glLightModelfv');
+    @glLightModeli := GetModuleSymbol(LibGL, 'glLightModeli');
+    @glLightModeliv := GetModuleSymbol(LibGL, 'glLightModeliv');
+    @glLightf := GetModuleSymbol(LibGL, 'glLightf');
+    @glLightfv := GetModuleSymbol(LibGL, 'glLightfv');
+    @glLighti := GetModuleSymbol(LibGL, 'glLighti');
+    @glLightiv := GetModuleSymbol(LibGL, 'glLightiv');
+    @glLineStipple := GetModuleSymbol(LibGL, 'glLineStipple');
+    @glLineWidth := GetModuleSymbol(LibGL, 'glLineWidth');
+    @glListBase := GetModuleSymbol(LibGL, 'glListBase');
+    @glLoadIdentity := GetModuleSymbol(LibGL, 'glLoadIdentity');
+    @glLoadMatrixd := GetModuleSymbol(LibGL, 'glLoadMatrixd');
+    @glLoadMatrixf := GetModuleSymbol(LibGL, 'glLoadMatrixf');
+    @glLoadName := GetModuleSymbol(LibGL, 'glLoadName');
+    @glLogicOp := GetModuleSymbol(LibGL, 'glLogicOp');
+    @glMap1d := GetModuleSymbol(LibGL, 'glMap1d');
+    @glMap1f := GetModuleSymbol(LibGL, 'glMap1f');
+    @glMap2d := GetModuleSymbol(LibGL, 'glMap2d');
+    @glMap2f := GetModuleSymbol(LibGL, 'glMap2f');
+    @glMapGrid1d := GetModuleSymbol(LibGL, 'glMapGrid1d');
+    @glMapGrid1f := GetModuleSymbol(LibGL, 'glMapGrid1f');
+    @glMapGrid2d := GetModuleSymbol(LibGL, 'glMapGrid2d');
+    @glMapGrid2f := GetModuleSymbol(LibGL, 'glMapGrid2f');
+    @glMaterialf := GetModuleSymbol(LibGL, 'glMaterialf');
+    @glMaterialfv := GetModuleSymbol(LibGL, 'glMaterialfv');
+    @glMateriali := GetModuleSymbol(LibGL, 'glMateriali');
+    @glMaterialiv := GetModuleSymbol(LibGL, 'glMaterialiv');
+    @glMatrixMode := GetModuleSymbol(LibGL, 'glMatrixMode');
+    @glMultMatrixd := GetModuleSymbol(LibGL, 'glMultMatrixd');
+    @glMultMatrixf := GetModuleSymbol(LibGL, 'glMultMatrixf');
+    @glNewList := GetModuleSymbol(LibGL, 'glNewList');
+    @glNormal3b := GetModuleSymbol(LibGL, 'glNormal3b');
+    @glNormal3bv := GetModuleSymbol(LibGL, 'glNormal3bv');
+    @glNormal3d := GetModuleSymbol(LibGL, 'glNormal3d');
+    @glNormal3dv := GetModuleSymbol(LibGL, 'glNormal3dv');
+    @glNormal3f := GetModuleSymbol(LibGL, 'glNormal3f');
+    @glNormal3fv := GetModuleSymbol(LibGL, 'glNormal3fv');
+    @glNormal3i := GetModuleSymbol(LibGL, 'glNormal3i');
+    @glNormal3iv := GetModuleSymbol(LibGL, 'glNormal3iv');
+    @glNormal3s := GetModuleSymbol(LibGL, 'glNormal3s');
+    @glNormal3sv := GetModuleSymbol(LibGL, 'glNormal3sv');
+    @glNormalPointer := GetModuleSymbol(LibGL, 'glNormalPointer');
+    @glOrtho := GetModuleSymbol(LibGL, 'glOrtho');
+    @glPassThrough := GetModuleSymbol(LibGL, 'glPassThrough');
+    @glPixelMapfv := GetModuleSymbol(LibGL, 'glPixelMapfv');
+    @glPixelMapuiv := GetModuleSymbol(LibGL, 'glPixelMapuiv');
+    @glPixelMapusv := GetModuleSymbol(LibGL, 'glPixelMapusv');
+    @glPixelStoref := GetModuleSymbol(LibGL, 'glPixelStoref');
+    @glPixelStorei := GetModuleSymbol(LibGL, 'glPixelStorei');
+    @glPixelTransferf := GetModuleSymbol(LibGL, 'glPixelTransferf');
+    @glPixelTransferi := GetModuleSymbol(LibGL, 'glPixelTransferi');
+    @glPixelZoom := GetModuleSymbol(LibGL, 'glPixelZoom');
+    @glPointSize := GetModuleSymbol(LibGL, 'glPointSize');
+    @glPolygonMode := GetModuleSymbol(LibGL, 'glPolygonMode');
+    @glPolygonOffset := GetModuleSymbol(LibGL, 'glPolygonOffset');
+    @glPolygonStipple := GetModuleSymbol(LibGL, 'glPolygonStipple');
+    @glPopAttrib := GetModuleSymbol(LibGL, 'glPopAttrib');
+    @glPopClientAttrib := GetModuleSymbol(LibGL, 'glPopClientAttrib');
+    @glPopMatrix := GetModuleSymbol(LibGL, 'glPopMatrix');
+    @glPopName := GetModuleSymbol(LibGL, 'glPopName');
+    @glPrioritizeTextures := GetModuleSymbol(LibGL, 'glPrioritizeTextures');
+    @glPushAttrib := GetModuleSymbol(LibGL, 'glPushAttrib');
+    @glPushClientAttrib := GetModuleSymbol(LibGL, 'glPushClientAttrib');
+    @glPushMatrix := GetModuleSymbol(LibGL, 'glPushMatrix');
+    @glPushName := GetModuleSymbol(LibGL, 'glPushName');
+    @glRasterPos2d := GetModuleSymbol(LibGL, 'glRasterPos2d');
+    @glRasterPos2dv := GetModuleSymbol(LibGL, 'glRasterPos2dv');
+    @glRasterPos2f := GetModuleSymbol(LibGL, 'glRasterPos2f');
+    @glRasterPos2fv := GetModuleSymbol(LibGL, 'glRasterPos2fv');
+    @glRasterPos2i := GetModuleSymbol(LibGL, 'glRasterPos2i');
+    @glRasterPos2iv := GetModuleSymbol(LibGL, 'glRasterPos2iv');
+    @glRasterPos2s := GetModuleSymbol(LibGL, 'glRasterPos2s');
+    @glRasterPos2sv := GetModuleSymbol(LibGL, 'glRasterPos2sv');
+    @glRasterPos3d := GetModuleSymbol(LibGL, 'glRasterPos3d');
+    @glRasterPos3dv := GetModuleSymbol(LibGL, 'glRasterPos3dv');
+    @glRasterPos3f := GetModuleSymbol(LibGL, 'glRasterPos3f');
+    @glRasterPos3fv := GetModuleSymbol(LibGL, 'glRasterPos3fv');
+    @glRasterPos3i := GetModuleSymbol(LibGL, 'glRasterPos3i');
+    @glRasterPos3iv := GetModuleSymbol(LibGL, 'glRasterPos3iv');
+    @glRasterPos3s := GetModuleSymbol(LibGL, 'glRasterPos3s');
+    @glRasterPos3sv := GetModuleSymbol(LibGL, 'glRasterPos3sv');
+    @glRasterPos4d := GetModuleSymbol(LibGL, 'glRasterPos4d');
+    @glRasterPos4dv := GetModuleSymbol(LibGL, 'glRasterPos4dv');
+    @glRasterPos4f := GetModuleSymbol(LibGL, 'glRasterPos4f');
+    @glRasterPos4fv := GetModuleSymbol(LibGL, 'glRasterPos4fv');
+    @glRasterPos4i := GetModuleSymbol(LibGL, 'glRasterPos4i');
+    @glRasterPos4iv := GetModuleSymbol(LibGL, 'glRasterPos4iv');
+    @glRasterPos4s := GetModuleSymbol(LibGL, 'glRasterPos4s');
+    @glRasterPos4sv := GetModuleSymbol(LibGL, 'glRasterPos4sv');
+    @glReadBuffer := GetModuleSymbol(LibGL, 'glReadBuffer');
+    @glReadPixels := GetModuleSymbol(LibGL, 'glReadPixels');
+    @glRectd := GetModuleSymbol(LibGL, 'glRectd');
+    @glRectdv := GetModuleSymbol(LibGL, 'glRectdv');
+    @glRectf := GetModuleSymbol(LibGL, 'glRectf');
+    @glRectfv := GetModuleSymbol(LibGL, 'glRectfv');
+    @glRecti := GetModuleSymbol(LibGL, 'glRecti');
+    @glRectiv := GetModuleSymbol(LibGL, 'glRectiv');
+    @glRects := GetModuleSymbol(LibGL, 'glRects');
+    @glRectsv := GetModuleSymbol(LibGL, 'glRectsv');
+    @glRenderMode := GetModuleSymbol(LibGL, 'glRenderMode');
+    @glRotated := GetModuleSymbol(LibGL, 'glRotated');
+    @glRotatef := GetModuleSymbol(LibGL, 'glRotatef');
+    @glScaled := GetModuleSymbol(LibGL, 'glScaled');
+    @glScalef := GetModuleSymbol(LibGL, 'glScalef');
+    @glScissor := GetModuleSymbol(LibGL, 'glScissor');
+    @glSelectBuffer := GetModuleSymbol(LibGL, 'glSelectBuffer');
+    @glShadeModel := GetModuleSymbol(LibGL, 'glShadeModel');
+    @glStencilFunc := GetModuleSymbol(LibGL, 'glStencilFunc');
+    @glStencilMask := GetModuleSymbol(LibGL, 'glStencilMask');
+    @glStencilOp := GetModuleSymbol(LibGL, 'glStencilOp');
+    @glTexCoord1d := GetModuleSymbol(LibGL, 'glTexCoord1d');
+    @glTexCoord1dv := GetModuleSymbol(LibGL, 'glTexCoord1dv');
+    @glTexCoord1f := GetModuleSymbol(LibGL, 'glTexCoord1f');
+    @glTexCoord1fv := GetModuleSymbol(LibGL, 'glTexCoord1fv');
+    @glTexCoord1i := GetModuleSymbol(LibGL, 'glTexCoord1i');
+    @glTexCoord1iv := GetModuleSymbol(LibGL, 'glTexCoord1iv');
+    @glTexCoord1s := GetModuleSymbol(LibGL, 'glTexCoord1s');
+    @glTexCoord1sv := GetModuleSymbol(LibGL, 'glTexCoord1sv');
+    @glTexCoord2d := GetModuleSymbol(LibGL, 'glTexCoord2d');
+    @glTexCoord2dv := GetModuleSymbol(LibGL, 'glTexCoord2dv');
+    @glTexCoord2f := GetModuleSymbol(LibGL, 'glTexCoord2f');
+    @glTexCoord2fv := GetModuleSymbol(LibGL, 'glTexCoord2fv');
+    @glTexCoord2i := GetModuleSymbol(LibGL, 'glTexCoord2i');
+    @glTexCoord2iv := GetModuleSymbol(LibGL, 'glTexCoord2iv');
+    @glTexCoord2s := GetModuleSymbol(LibGL, 'glTexCoord2s');
+    @glTexCoord2sv := GetModuleSymbol(LibGL, 'glTexCoord2sv');
+    @glTexCoord3d := GetModuleSymbol(LibGL, 'glTexCoord3d');
+    @glTexCoord3dv := GetModuleSymbol(LibGL, 'glTexCoord3dv');
+    @glTexCoord3f := GetModuleSymbol(LibGL, 'glTexCoord3f');
+    @glTexCoord3fv := GetModuleSymbol(LibGL, 'glTexCoord3fv');
+    @glTexCoord3i := GetModuleSymbol(LibGL, 'glTexCoord3i');
+    @glTexCoord3iv := GetModuleSymbol(LibGL, 'glTexCoord3iv');
+    @glTexCoord3s := GetModuleSymbol(LibGL, 'glTexCoord3s');
+    @glTexCoord3sv := GetModuleSymbol(LibGL, 'glTexCoord3sv');
+    @glTexCoord4d := GetModuleSymbol(LibGL, 'glTexCoord4d');
+    @glTexCoord4dv := GetModuleSymbol(LibGL, 'glTexCoord4dv');
+    @glTexCoord4f := GetModuleSymbol(LibGL, 'glTexCoord4f');
+    @glTexCoord4fv := GetModuleSymbol(LibGL, 'glTexCoord4fv');
+    @glTexCoord4i := GetModuleSymbol(LibGL, 'glTexCoord4i');
+    @glTexCoord4iv := GetModuleSymbol(LibGL, 'glTexCoord4iv');
+    @glTexCoord4s := GetModuleSymbol(LibGL, 'glTexCoord4s');
+    @glTexCoord4sv := GetModuleSymbol(LibGL, 'glTexCoord4sv');
+    @glTexCoordPointer := GetModuleSymbol(LibGL, 'glTexCoordPointer');
+    @glTexEnvf := GetModuleSymbol(LibGL, 'glTexEnvf');
+    @glTexEnvfv := GetModuleSymbol(LibGL, 'glTexEnvfv');
+    @glTexEnvi := GetModuleSymbol(LibGL, 'glTexEnvi');
+    @glTexEnviv := GetModuleSymbol(LibGL, 'glTexEnviv');
+    @glTexGend := GetModuleSymbol(LibGL, 'glTexGend');
+    @glTexGendv := GetModuleSymbol(LibGL, 'glTexGendv');
+    @glTexGenf := GetModuleSymbol(LibGL, 'glTexGenf');
+    @glTexGenfv := GetModuleSymbol(LibGL, 'glTexGenfv');
+    @glTexGeni := GetModuleSymbol(LibGL, 'glTexGeni');
+    @glTexGeniv := GetModuleSymbol(LibGL, 'glTexGeniv');
+    @glTexImage1D := GetModuleSymbol(LibGL, 'glTexImage1D');
+    @glTexImage2D := GetModuleSymbol(LibGL, 'glTexImage2D');
+    @glTexParameterf := GetModuleSymbol(LibGL, 'glTexParameterf');
+    @glTexParameterfv := GetModuleSymbol(LibGL, 'glTexParameterfv');
+    @glTexParameteri := GetModuleSymbol(LibGL, 'glTexParameteri');
+    @glTexParameteriv := GetModuleSymbol(LibGL, 'glTexParameteriv');
+    @glTexSubImage1D := GetModuleSymbol(LibGL, 'glTexSubImage1D');
+    @glTexSubImage2D := GetModuleSymbol(LibGL, 'glTexSubImage2D');
+    @glTranslated := GetModuleSymbol(LibGL, 'glTranslated');
+    @glTranslatef := GetModuleSymbol(LibGL, 'glTranslatef');
+    @glVertex2d := GetModuleSymbol(LibGL, 'glVertex2d');
+    @glVertex2dv := GetModuleSymbol(LibGL, 'glVertex2dv');
+    @glVertex2f := GetModuleSymbol(LibGL, 'glVertex2f');
+    @glVertex2fv := GetModuleSymbol(LibGL, 'glVertex2fv');
+    @glVertex2i := GetModuleSymbol(LibGL, 'glVertex2i');
+    @glVertex2iv := GetModuleSymbol(LibGL, 'glVertex2iv');
+    @glVertex2s := GetModuleSymbol(LibGL, 'glVertex2s');
+    @glVertex2sv := GetModuleSymbol(LibGL, 'glVertex2sv');
+    @glVertex3d := GetModuleSymbol(LibGL, 'glVertex3d');
+    @glVertex3dv := GetModuleSymbol(LibGL, 'glVertex3dv');
+    @glVertex3f := GetModuleSymbol(LibGL, 'glVertex3f');
+    @glVertex3fv := GetModuleSymbol(LibGL, 'glVertex3fv');
+    @glVertex3i := GetModuleSymbol(LibGL, 'glVertex3i');
+    @glVertex3iv := GetModuleSymbol(LibGL, 'glVertex3iv');
+    @glVertex3s := GetModuleSymbol(LibGL, 'glVertex3s');
+    @glVertex3sv := GetModuleSymbol(LibGL, 'glVertex3sv');
+    @glVertex4d := GetModuleSymbol(LibGL, 'glVertex4d');
+    @glVertex4dv := GetModuleSymbol(LibGL, 'glVertex4dv');
+    @glVertex4f := GetModuleSymbol(LibGL, 'glVertex4f');
+    @glVertex4fv := GetModuleSymbol(LibGL, 'glVertex4fv');
+    @glVertex4i := GetModuleSymbol(LibGL, 'glVertex4i');
+    @glVertex4iv := GetModuleSymbol(LibGL, 'glVertex4iv');
+    @glVertex4s := GetModuleSymbol(LibGL, 'glVertex4s');
+    @glVertex4sv := GetModuleSymbol(LibGL, 'glVertex4sv');
+    @glVertexPointer := GetModuleSymbol(LibGL, 'glVertexPointer');
+    @glViewport := GetModuleSymbol(LibGL, 'glViewport');
+
+    {$IFDEF WINDOWS}
+    @ChoosePixelFormat := GetModuleSymbol(LibGL, 'ChoosePixelFormat');
+    if not Assigned(ChoosePixelFormat) then
+      {$IFNDEF FPC}@{$ENDIF}ChoosePixelFormat := @Windows.ChoosePixelFormat;
+    {$ENDIF}
+  end;
+end;
+
+initialization
+  {$IF Defined(CPU386) or Defined(CPUI386) or Defined(CPUX86_64)}
+  Set8087CW($133F);
+  {$IFEND}
+
+  LoadOpenGL( GLLibName );
+
+finalization
+
+  FreeOpenGL;
+
+end.
+
diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/glext.pas b/src/lib/JEDI-SDL/OpenGL/Pas/glext.pas
new file mode 100644
index 00000000..871247a9
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/glext.pas
@@ -0,0 +1,9579 @@
+unit glext;
+{
+  $Id: glext.pas,v 1.6 2007/05/20 20:28:31 savage Exp $
+  
+}
+(**************************************************
+ *        OpenGL extension loading library        *
+ * Generated by MetaGLext, written by Tom Nuydens *
+ *  (tom@delphi3d.net -- http://www.delphi3d.net  *
+ **************************************************)
+
+{
+  $Log: glext.pas,v $
+  Revision 1.6  2007/05/20 20:28:31  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.5  2006/01/11 22:39:02  drellis
+  Updated to Support Up to OpenGL 2.0
+
+  Revision 1.4  2005/01/05 00:28:40  savage
+  Forgot to wrap a couple of Load_WGL function calls with an IFDEF WIN32. Fixed so now compiles under Linux as well.
+
+  Revision 1.3  2004/08/24 19:33:06  savage
+  Removed declarations of SDL_GL_GetProcAddress as the correct ones are in sdl.pas.
+
+  Revision 1.2  2004/08/09 00:38:01  savage
+  Updated to Tom's latest version. May contains bugs, but I hope not.
+
+  Revision 1.1  2004/03/30 21:53:54  savage
+  Moved to it's own folder.
+
+  Revision 1.6  2004/03/28 00:28:43  savage
+  Fixed some glSecondaryColor definitions...
+
+  Revision 1.5  2004/02/20 17:18:16  savage
+  Forgot to prefix function pointer with @ for FPC and other Pascal compilers.
+
+  Revision 1.4  2004/02/20 17:09:55  savage
+  Code tidied up in gl, glu and glut, while extensions in glext.pas are now loaded using SDL_GL_GetProcAddress, thus making it more cross-platform compatible, but now more tied to SDL.
+
+  Revision 1.3  2004/02/14 22:36:29  savage
+  Fixed inconsistencies of using LoadLibrary and LoadModule.
+  Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
+
+  Revision 1.2  2004/02/14 00:09:19  savage
+  Changed uses to now make use of moduleloader.pas rather than dllfuncs.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  Revision 1.7  2003/06/02 12:32:13  savage
+  Modified Sources to avoid warnings with Delphi by moving CVS Logging to the top of the header files. Hopefully CVS Logging still works.
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+  SysUtils,
+{$IFDEF __GPC__}
+  gpc,
+{$ENDIF}
+
+{$IFDEF WINDOWS}
+  Windows,
+{$ENDIF}
+  moduleloader,
+  gl;
+
+// Test if the given extension name is present in the given extension string.
+function glext_ExtensionSupported(const extension: PChar; const searchIn: PChar): Boolean;
+
+// Load a Specific Extension
+function glext_LoadExtension(ext: String): Boolean;
+// Some types that were introduced by extensions:
+type
+  GLintptrARB = Integer;
+  PGLintptrARB = ^GLintptrARB;
+
+  GLsizeiptrARB = Integer;
+  PGLsizeiptrARB = ^GLsizeiptrARB;
+
+  GLcharARB = Char;
+  PGLcharARB = ^GLcharARB;
+
+  GLhandleARB = Cardinal;
+  PGLhandleARB = ^GLhandleARB;
+
+  GLintptr = Integer;
+  PGLintptr = ^GLintptr;
+
+  GLsizeiptr = Integer;
+  PGLsizeiptr = ^GLsizeiptr;
+
+  GLchar = Char;
+  PGLchar = ^GLchar;
+
+//***** GL_version_1_2 *****//
+const
+  GL_UNSIGNED_BYTE_3_3_2 = $8032;
+  GL_UNSIGNED_SHORT_4_4_4_4 = $8033;
+  GL_UNSIGNED_SHORT_5_5_5_1 = $8034;
+  GL_UNSIGNED_INT_8_8_8_8 = $8035;
+  GL_UNSIGNED_INT_10_10_10_2 = $8036;
+  GL_RESCALE_NORMAL = $803A;
+  GL_UNSIGNED_BYTE_2_3_3_REV = $8362;
+  GL_UNSIGNED_SHORT_5_6_5 = $8363;
+  GL_UNSIGNED_SHORT_5_6_5_REV = $8364;
+  GL_UNSIGNED_SHORT_4_4_4_4_REV = $8365;
+  GL_UNSIGNED_SHORT_1_5_5_5_REV = $8366;
+  GL_UNSIGNED_INT_8_8_8_8_REV = $8367;
+  GL_UNSIGNED_INT_2_10_10_10_REV = $8368;
+  GL_BGR = $80E0;
+  GL_BGRA = $80E1;
+  GL_MAX_ELEMENTS_VERTICES = $80E8;
+  GL_MAX_ELEMENTS_INDICES = $80E9;
+  GL_CLAMP_TO_EDGE = $812F;
+  GL_TEXTURE_MIN_LOD = $813A;
+  GL_TEXTURE_MAX_LOD = $813B;
+  GL_TEXTURE_BASE_LEVEL = $813C;
+  GL_TEXTURE_MAX_LEVEL = $813D;
+  GL_LIGHT_MODEL_COLOR_CONTROL = $81F8;
+  GL_SINGLE_COLOR = $81F9;
+  GL_SEPARATE_SPECULAR_COLOR = $81FA;
+  GL_SMOOTH_POINT_SIZE_RANGE = $0B12;
+  GL_SMOOTH_POINT_SIZE_GRANULARITY = $0B13;
+  GL_SMOOTH_LINE_WIDTH_RANGE = $0B22;
+  GL_SMOOTH_LINE_WIDTH_GRANULARITY = $0B23;
+  GL_ALIASED_POINT_SIZE_RANGE = $846D;
+  GL_ALIASED_LINE_WIDTH_RANGE = $846E;
+  GL_PACK_SKIP_IMAGES = $806B;
+  GL_PACK_IMAGE_HEIGHT = $806C;
+  GL_UNPACK_SKIP_IMAGES = $806D;
+  GL_UNPACK_IMAGE_HEIGHT = $806E;
+  GL_TEXTURE_3D = $806F;
+  GL_PROXY_TEXTURE_3D = $8070;
+  GL_TEXTURE_DEPTH = $8071;
+  GL_TEXTURE_WRAP_R = $8072;
+  GL_MAX_3D_TEXTURE_SIZE = $8073;
+var
+  glDrawRangeElements: procedure(mode: GLenum; start: GLuint; _end: GLuint; count: GLsizei; _type: GLenum; const indices: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexImage3D: procedure(target: GLenum; level: GLint; internalformat: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; border: GLint; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage3D: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexSubImage3D: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; x: GLint; y: GLint; width: GLsizei; height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_version_1_2: Boolean;
+
+//***** GL_ARB_imaging *****//
+const
+  GL_CONSTANT_COLOR = $8001;
+  GL_ONE_MINUS_CONSTANT_COLOR = $8002;
+  GL_CONSTANT_ALPHA = $8003;
+  GL_ONE_MINUS_CONSTANT_ALPHA = $8004;
+  GL_BLEND_COLOR = $8005;
+  GL_FUNC_ADD = $8006;
+  GL_MIN = $8007;
+  GL_MAX = $8008;
+  GL_BLEND_EQUATION = $8009;
+  GL_FUNC_SUBTRACT = $800A;
+  GL_FUNC_REVERSE_SUBTRACT = $800B;
+  GL_CONVOLUTION_1D = $8010;
+  GL_CONVOLUTION_2D = $8011;
+  GL_SEPARABLE_2D = $8012;
+  GL_CONVOLUTION_BORDER_MODE = $8013;
+  GL_CONVOLUTION_FILTER_SCALE = $8014;
+  GL_CONVOLUTION_FILTER_BIAS = $8015;
+  GL_REDUCE = $8016;
+  GL_CONVOLUTION_FORMAT = $8017;
+  GL_CONVOLUTION_WIDTH = $8018;
+  GL_CONVOLUTION_HEIGHT = $8019;
+  GL_MAX_CONVOLUTION_WIDTH = $801A;
+  GL_MAX_CONVOLUTION_HEIGHT = $801B;
+  GL_POST_CONVOLUTION_RED_SCALE = $801C;
+  GL_POST_CONVOLUTION_GREEN_SCALE = $801D;
+  GL_POST_CONVOLUTION_BLUE_SCALE = $801E;
+  GL_POST_CONVOLUTION_ALPHA_SCALE = $801F;
+  GL_POST_CONVOLUTION_RED_BIAS = $8020;
+  GL_POST_CONVOLUTION_GREEN_BIAS = $8021;
+  GL_POST_CONVOLUTION_BLUE_BIAS = $8022;
+  GL_POST_CONVOLUTION_ALPHA_BIAS = $8023;
+  GL_HISTOGRAM = $8024;
+  GL_PROXY_HISTOGRAM = $8025;
+  GL_HISTOGRAM_WIDTH = $8026;
+  GL_HISTOGRAM_FORMAT = $8027;
+  GL_HISTOGRAM_RED_SIZE = $8028;
+  GL_HISTOGRAM_GREEN_SIZE = $8029;
+  GL_HISTOGRAM_BLUE_SIZE = $802A;
+  GL_HISTOGRAM_ALPHA_SIZE = $802B;
+  GL_HISTOGRAM_LUMINANCE_SIZE = $802C;
+  GL_HISTOGRAM_SINK = $802D;
+  GL_MINMAX = $802E;
+  GL_MINMAX_FORMAT = $802F;
+  GL_MINMAX_SINK = $8030;
+  GL_TABLE_TOO_LARGE = $8031;
+  GL_COLOR_MATRIX = $80B1;
+  GL_COLOR_MATRIX_STACK_DEPTH = $80B2;
+  GL_MAX_COLOR_MATRIX_STACK_DEPTH = $80B3;
+  GL_POST_COLOR_MATRIX_RED_SCALE = $80B4;
+  GL_POST_COLOR_MATRIX_GREEN_SCALE = $80B5;
+  GL_POST_COLOR_MATRIX_BLUE_SCALE = $80B6;
+  GL_POST_COLOR_MATRIX_ALPHA_SCALE = $80B7;
+  GL_POST_COLOR_MATRIX_RED_BIAS = $80B8;
+  GL_POST_COLOR_MATRIX_GREEN_BIAS = $80B9;
+  GL_POST_COLOR_MATRIX_BLUE_BIAS = $80BA;
+  GL_POST_COLOR_MATIX_ALPHA_BIAS = $80BB;
+  GL_COLOR_TABLE = $80D0;
+  GL_POST_CONVOLUTION_COLOR_TABLE = $80D1;
+  GL_POST_COLOR_MATRIX_COLOR_TABLE = $80D2;
+  GL_PROXY_COLOR_TABLE = $80D3;
+  GL_PROXY_POST_CONVOLUTION_COLOR_TABLE = $80D4;
+  GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE = $80D5;
+  GL_COLOR_TABLE_SCALE = $80D6;
+  GL_COLOR_TABLE_BIAS = $80D7;
+  GL_COLOR_TABLE_FORMAT = $80D8;
+  GL_COLOR_TABLE_WIDTH = $80D9;
+  GL_COLOR_TABLE_RED_SIZE = $80DA;
+  GL_COLOR_TABLE_GREEN_SIZE = $80DB;
+  GL_COLOR_TABLE_BLUE_SIZE = $80DC;
+  GL_COLOR_TABLE_ALPHA_SIZE = $80DD;
+  GL_COLOR_TABLE_LUMINANCE_SIZE = $80DE;
+  GL_COLOR_TABLE_INTENSITY_SIZE = $80DF;
+  GL_IGNORE_BORDER = $8150;
+  GL_CONSTANT_BORDER = $8151;
+  GL_WRAP_BORDER = $8152;
+  GL_REPLICATE_BORDER = $8153;
+  GL_CONVOLUTION_BORDER_COLOR = $8154;
+var
+  glColorTable: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; format: GLenum; _type: GLenum; const table: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorTableParameterfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorTableParameteriv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyColorTable: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTable: procedure(target: GLenum; format: GLenum; _type: GLenum; table: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameterfv: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameteriv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorSubTable: procedure(target: GLenum; start: GLsizei; count: GLsizei; format: GLenum; _type: GLenum; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyColorSubTable: procedure(target: GLenum; start: GLsizei; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionFilter1D: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; format: GLenum; _type: GLenum; const image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionFilter2D: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei; format: GLenum; _type: GLenum; const image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameterf: procedure(target: GLenum; pname: GLenum; params: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameterfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameteri: procedure(target: GLenum; pname: GLenum; params: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameteriv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyConvolutionFilter1D: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyConvolutionFilter2D: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei; height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionFilter: procedure(target: GLenum; format: GLenum; _type: GLenum; image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionParameterfv: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionParameteriv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetSeparableFilter: procedure(target: GLenum; format: GLenum; _type: GLenum; row: PGLvoid; column: PGLvoid; span: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSeparableFilter2D: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei; format: GLenum; _type: GLenum; const row: PGLvoid; const column: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogram: procedure(target: GLenum; reset: GLboolean; format: GLenum; _type: GLenum; values: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogramParameterfv: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogramParameteriv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmax: procedure(target: GLenum; reset: GLboolean; format: GLenum; _type: GLenum; values: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmaxParameterfv: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmaxParameteriv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glHistogram: procedure(target: GLenum; width: GLsizei; internalformat: GLenum; sink: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMinmax: procedure(target: GLenum; internalformat: GLenum; sink: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glResetHistogram: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glResetMinmax: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBlendEquation: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBlendColor: procedure(red: GLclampf; green: GLclampf; blue: GLclampf; alpha: GLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_imaging: Boolean;
+
+//***** GL_version_1_3 *****//
+const
+  GL_TEXTURE0 = $84C0;
+  GL_TEXTURE1 = $84C1;
+  GL_TEXTURE2 = $84C2;
+  GL_TEXTURE3 = $84C3;
+  GL_TEXTURE4 = $84C4;
+  GL_TEXTURE5 = $84C5;
+  GL_TEXTURE6 = $84C6;
+  GL_TEXTURE7 = $84C7;
+  GL_TEXTURE8 = $84C8;
+  GL_TEXTURE9 = $84C9;
+  GL_TEXTURE10 = $84CA;
+  GL_TEXTURE11 = $84CB;
+  GL_TEXTURE12 = $84CC;
+  GL_TEXTURE13 = $84CD;
+  GL_TEXTURE14 = $84CE;
+  GL_TEXTURE15 = $84CF;
+  GL_TEXTURE16 = $84D0;
+  GL_TEXTURE17 = $84D1;
+  GL_TEXTURE18 = $84D2;
+  GL_TEXTURE19 = $84D3;
+  GL_TEXTURE20 = $84D4;
+  GL_TEXTURE21 = $84D5;
+  GL_TEXTURE22 = $84D6;
+  GL_TEXTURE23 = $84D7;
+  GL_TEXTURE24 = $84D8;
+  GL_TEXTURE25 = $84D9;
+  GL_TEXTURE26 = $84DA;
+  GL_TEXTURE27 = $84DB;
+  GL_TEXTURE28 = $84DC;
+  GL_TEXTURE29 = $84DD;
+  GL_TEXTURE30 = $84DE;
+  GL_TEXTURE31 = $84DF;
+  GL_ACTIVE_TEXTURE = $84E0;
+  GL_CLIENT_ACTIVE_TEXTURE = $84E1;
+  GL_MAX_TEXTURE_UNITS = $84E2;
+  GL_TRANSPOSE_MODELVIEW_MATRIX = $84E3;
+  GL_TRANSPOSE_PROJECTION_MATRIX = $84E4;
+  GL_TRANSPOSE_TEXTURE_MATRIX = $84E5;
+  GL_TRANSPOSE_COLOR_MATRIX = $84E6;
+  GL_MULTISAMPLE = $809D;
+  GL_SAMPLE_ALPHA_TO_COVERAGE = $809E;
+  GL_SAMPLE_ALPHA_TO_ONE = $809F;
+  GL_SAMPLE_COVERAGE = $80A0;
+  GL_SAMPLE_BUFFERS = $80A8;
+  GL_SAMPLES = $80A9;
+  GL_SAMPLE_COVERAGE_VALUE = $80AA;
+  GL_SAMPLE_COVERAGE_INVERT = $80AB;
+  GL_MULTISAMPLE_BIT = $20000000;
+  GL_NORMAL_MAP = $8511;
+  GL_REFLECTION_MAP = $8512;
+  GL_TEXTURE_CUBE_MAP = $8513;
+  GL_TEXTURE_BINDING_CUBE_MAP = $8514;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_X = $8515;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_X = $8516;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_Y = $8517;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_Y = $8518;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_Z = $8519;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_Z = $851A;
+  GL_PROXY_TEXTURE_CUBE_MAP = $851B;
+  GL_MAX_CUBE_MAP_TEXTURE_SIZE = $851C;
+  GL_COMPRESSED_ALPHA = $84E9;
+  GL_COMPRESSED_LUMINANCE = $84EA;
+  GL_COMPRESSED_LUMINANCE_ALPHA = $84EB;
+  GL_COMPRESSED_INTENSITY = $84EC;
+  GL_COMPRESSED_RGB = $84ED;
+  GL_COMPRESSED_RGBA = $84EE;
+  GL_TEXTURE_COMPRESSION_HINT = $84EF;
+  GL_TEXTURE_COMPRESSED_IMAGE_SIZE = $86A0;
+  GL_TEXTURE_COMPRESSED = $86A1;
+  GL_NUM_COMPRESSED_TEXTURE_FORMATS = $86A2;
+  GL_COMPRESSED_TEXTURE_FORMATS = $86A3;
+  GL_CLAMP_TO_BORDER = $812D;
+  GL_CLAMP_TO_BORDER_SGIS = $812D;
+  GL_COMBINE = $8570;
+  GL_COMBINE_RGB = $8571;
+  GL_COMBINE_ALPHA = $8572;
+  GL_SOURCE0_RGB = $8580;
+  GL_SOURCE1_RGB = $8581;
+  GL_SOURCE2_RGB = $8582;
+  GL_SOURCE0_ALPHA = $8588;
+  GL_SOURCE1_ALPHA = $8589;
+  GL_SOURCE2_ALPHA = $858A;
+  GL_OPERAND0_RGB = $8590;
+  GL_OPERAND1_RGB = $8591;
+  GL_OPERAND2_RGB = $8592;
+  GL_OPERAND0_ALPHA = $8598;
+  GL_OPERAND1_ALPHA = $8599;
+  GL_OPERAND2_ALPHA = $859A;
+  GL_RGB_SCALE = $8573;
+  GL_ADD_SIGNED = $8574;
+  GL_INTERPOLATE = $8575;
+  GL_SUBTRACT = $84E7;
+  GL_CONSTANT = $8576;
+  GL_PRIMARY_COLOR = $8577;
+  GL_PREVIOUS = $8578;
+  GL_DOT3_RGB = $86AE;
+  GL_DOT3_RGBA = $86AF;
+var
+  glActiveTexture: procedure(texture: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClientActiveTexture: procedure(texture: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1d: procedure(target: GLenum; s: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1dv: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1f: procedure(target: GLenum; s: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1fv: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1i: procedure(target: GLenum; s: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1iv: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1s: procedure(target: GLenum; s: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1sv: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2d: procedure(target: GLenum; s: GLdouble; t: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2dv: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2f: procedure(target: GLenum; s: GLfloat; t: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2fv: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2i: procedure(target: GLenum; s: GLint; t: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2iv: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2s: procedure(target: GLenum; s: GLshort; t: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2sv: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3d: procedure(target: GLenum; s: GLdouble; t: GLdouble; r: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3dv: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3f: procedure(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3fv: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3i: procedure(target: GLenum; s: GLint; t: GLint; r: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3iv: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3s: procedure(target: GLenum; s: GLshort; t: GLshort; r: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3sv: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4d: procedure(target: GLenum; s: GLdouble; t: GLdouble; r: GLdouble; q: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4dv: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4f: procedure(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat; q: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4fv: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4i: procedure(target: GLenum; s: GLint; t: GLint; r: GLint; q: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4iv: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4s: procedure(target: GLenum; s: GLshort; t: GLshort; r: GLshort; q: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4sv: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadTransposeMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadTransposeMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultTransposeMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultTransposeMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSampleCoverage: procedure(value: GLclampf; invert: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexImage3D: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; height: GLsizei; depth: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexImage2D: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; height: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexImage1D: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage3D: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage2D: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; width: GLsizei; height: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage1D: procedure(target: GLenum; level: GLint; xoffset: GLint; width: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCompressedTexImage: procedure(target: GLenum; level: GLint; img: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_version_1_3: Boolean;
+
+//***** GL_ARB_multitexture *****//
+const
+  GL_TEXTURE0_ARB = $84C0;
+  GL_TEXTURE1_ARB = $84C1;
+  GL_TEXTURE2_ARB = $84C2;
+  GL_TEXTURE3_ARB = $84C3;
+  GL_TEXTURE4_ARB = $84C4;
+  GL_TEXTURE5_ARB = $84C5;
+  GL_TEXTURE6_ARB = $84C6;
+  GL_TEXTURE7_ARB = $84C7;
+  GL_TEXTURE8_ARB = $84C8;
+  GL_TEXTURE9_ARB = $84C9;
+  GL_TEXTURE10_ARB = $84CA;
+  GL_TEXTURE11_ARB = $84CB;
+  GL_TEXTURE12_ARB = $84CC;
+  GL_TEXTURE13_ARB = $84CD;
+  GL_TEXTURE14_ARB = $84CE;
+  GL_TEXTURE15_ARB = $84CF;
+  GL_TEXTURE16_ARB = $84D0;
+  GL_TEXTURE17_ARB = $84D1;
+  GL_TEXTURE18_ARB = $84D2;
+  GL_TEXTURE19_ARB = $84D3;
+  GL_TEXTURE20_ARB = $84D4;
+  GL_TEXTURE21_ARB = $84D5;
+  GL_TEXTURE22_ARB = $84D6;
+  GL_TEXTURE23_ARB = $84D7;
+  GL_TEXTURE24_ARB = $84D8;
+  GL_TEXTURE25_ARB = $84D9;
+  GL_TEXTURE26_ARB = $84DA;
+  GL_TEXTURE27_ARB = $84DB;
+  GL_TEXTURE28_ARB = $84DC;
+  GL_TEXTURE29_ARB = $84DD;
+  GL_TEXTURE30_ARB = $84DE;
+  GL_TEXTURE31_ARB = $84DF;
+  GL_ACTIVE_TEXTURE_ARB = $84E0;
+  GL_CLIENT_ACTIVE_TEXTURE_ARB = $84E1;
+  GL_MAX_TEXTURE_UNITS_ARB = $84E2;
+var
+  glActiveTextureARB: procedure(texture: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClientActiveTextureARB: procedure(texture: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1dARB: procedure(target: GLenum; s: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1dvARB: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1fARB: procedure(target: GLenum; s: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1fvARB: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1iARB: procedure(target: GLenum; s: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1ivARB: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1sARB: procedure(target: GLenum; s: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1svARB: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2dARB: procedure(target: GLenum; s: GLdouble; t: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2dvARB: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2fARB: procedure(target: GLenum; s: GLfloat; t: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2fvARB: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2iARB: procedure(target: GLenum; s: GLint; t: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2ivARB: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2sARB: procedure(target: GLenum; s: GLshort; t: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2svARB: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3dARB: procedure(target: GLenum; s: GLdouble; t: GLdouble; r: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3dvARB: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3fARB: procedure(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3fvARB: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3iARB: procedure(target: GLenum; s: GLint; t: GLint; r: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3ivARB: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3sARB: procedure(target: GLenum; s: GLshort; t: GLshort; r: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3svARB: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4dARB: procedure(target: GLenum; s: GLdouble; t: GLdouble; r: GLdouble; q: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4dvARB: procedure(target: GLenum; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4fARB: procedure(target: GLenum; s: GLfloat; t: GLfloat; r: GLfloat; q: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4fvARB: procedure(target: GLenum; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4iARB: procedure(target: GLenum; s: GLint; t: GLint; r: GLint; q: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4ivARB: procedure(target: GLenum; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4sARB: procedure(target: GLenum; s: GLshort; t: GLshort; r: GLshort; q: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4svARB: procedure(target: GLenum; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_multitexture: Boolean;
+
+//***** GL_ARB_transpose_matrix *****//
+const
+  GL_TRANSPOSE_MODELVIEW_MATRIX_ARB = $84E3;
+  GL_TRANSPOSE_PROJECTION_MATRIX_ARB = $84E4;
+  GL_TRANSPOSE_TEXTURE_MATRIX_ARB = $84E5;
+  GL_TRANSPOSE_COLOR_MATRIX_ARB = $84E6;
+var
+  glLoadTransposeMatrixfARB: procedure(m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadTransposeMatrixdARB: procedure(m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultTransposeMatrixfARB: procedure(m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultTransposeMatrixdARB: procedure(m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_transpose_matrix: Boolean;
+
+//***** GL_ARB_multisample *****//
+const
+  WGL_SAMPLE_BUFFERS_ARB = $2041;
+  WGL_SAMPLES_ARB = $2042;
+  GL_MULTISAMPLE_ARB = $809D;
+  GL_SAMPLE_ALPHA_TO_COVERAGE_ARB = $809E;
+  GL_SAMPLE_ALPHA_TO_ONE_ARB = $809F;
+  GL_SAMPLE_COVERAGE_ARB = $80A0;
+  GL_MULTISAMPLE_BIT_ARB = $20000000;
+  GL_SAMPLE_BUFFERS_ARB = $80A8;
+  GL_SAMPLES_ARB = $80A9;
+  GL_SAMPLE_COVERAGE_VALUE_ARB = $80AA;
+  GL_SAMPLE_COVERAGE_INVERT_ARB = $80AB;
+var
+  glSampleCoverageARB: procedure(value: GLclampf; invert: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_multisample: Boolean;
+
+//***** GL_ARB_texture_env_add *****//
+
+function Load_GL_ARB_texture_env_add: Boolean;
+
+{$IFDEF WINDOWS}
+//***** WGL_ARB_extensions_string *****//
+var
+  wglGetExtensionsStringARB: function(hdc: HDC): Pchar; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_extensions_string: Boolean;
+
+//***** WGL_ARB_buffer_region *****//
+const
+  WGL_FRONT_COLOR_BUFFER_BIT_ARB = $0001;
+  WGL_BACK_COLOR_BUFFER_BIT_ARB = $0002;
+  WGL_DEPTH_BUFFER_BIT_ARB = $0004;
+  WGL_STENCIL_BUFFER_BIT_ARB = $0008;
+var
+  wglCreateBufferRegionARB: function(hDC: HDC; iLayerPlane: GLint; uType: GLuint): THandle; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDeleteBufferRegionARB: procedure(hRegion: THandle); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglSaveBufferRegionARB: function(hRegion: THandle; x: GLint; y: GLint; width: GLint; height: GLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglRestoreBufferRegionARB: function(hRegion: THandle; x: GLint; y: GLint; width: GLint; height: GLint; xSrc: GLint; ySrc: GLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_buffer_region: Boolean;
+{$ENDIF}
+
+//***** GL_ARB_texture_cube_map *****//
+const
+  GL_NORMAL_MAP_ARB = $8511;
+  GL_REFLECTION_MAP_ARB = $8512;
+  GL_TEXTURE_CUBE_MAP_ARB = $8513;
+  GL_TEXTURE_BINDING_CUBE_MAP_ARB = $8514;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB = $8515;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB = $8516;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB = $8517;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB = $8518;
+  GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB = $8519;
+  GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB = $851A;
+  GL_PROXY_TEXTURE_CUBE_MAP_ARB = $851B;
+  GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB = $851C;
+
+function Load_GL_ARB_texture_cube_map: Boolean;
+
+//***** GL_ARB_depth_texture *****//
+const
+  GL_DEPTH_COMPONENT16_ARB = $81A5;
+  GL_DEPTH_COMPONENT24_ARB = $81A6;
+  GL_DEPTH_COMPONENT32_ARB = $81A7;
+  GL_TEXTURE_DEPTH_SIZE_ARB = $884A;
+  GL_DEPTH_TEXTURE_MODE_ARB = $884B;
+
+function Load_GL_ARB_depth_texture: Boolean;
+
+//***** GL_ARB_point_parameters *****//
+const
+  GL_POINT_SIZE_MIN_ARB = $8126;
+  GL_POINT_SIZE_MAX_ARB = $8127;
+  GL_POINT_FADE_THRESHOLD_SIZE_ARB = $8128;
+  GL_POINT_DISTANCE_ATTENUATION_ARB = $8129;
+var
+  glPointParameterfARB: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameterfvARB: procedure(pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_point_parameters: Boolean;
+
+//***** GL_ARB_shadow *****//
+const
+  GL_TEXTURE_COMPARE_MODE_ARB = $884C;
+  GL_TEXTURE_COMPARE_FUNC_ARB = $884D;
+  GL_COMPARE_R_TO_TEXTURE_ARB = $884E;
+
+function Load_GL_ARB_shadow: Boolean;
+
+//***** GL_ARB_shadow_ambient *****//
+const
+  GL_TEXTURE_COMPARE_FAIL_VALUE_ARB = $80BF;
+
+function Load_GL_ARB_shadow_ambient: Boolean;
+
+//***** GL_ARB_texture_border_clamp *****//
+const
+  GL_CLAMP_TO_BORDER_ARB = $812D;
+
+function Load_GL_ARB_texture_border_clamp: Boolean;
+
+//***** GL_ARB_texture_compression *****//
+const
+  GL_COMPRESSED_ALPHA_ARB = $84E9;
+  GL_COMPRESSED_LUMINANCE_ARB = $84EA;
+  GL_COMPRESSED_LUMINANCE_ALPHA_ARB = $84EB;
+  GL_COMPRESSED_INTENSITY_ARB = $84EC;
+  GL_COMPRESSED_RGB_ARB = $84ED;
+  GL_COMPRESSED_RGBA_ARB = $84EE;
+  GL_TEXTURE_COMPRESSION_HINT_ARB = $84EF;
+  GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB = $86A0;
+  GL_TEXTURE_COMPRESSED_ARB = $86A1;
+  GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB = $86A2;
+  GL_COMPRESSED_TEXTURE_FORMATS_ARB = $86A3;
+var
+  glCompressedTexImage3DARB: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; height: GLsizei; depth: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexImage2DARB: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; height: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexImage1DARB: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; border: GLint; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage3DARB: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage2DARB: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; width: GLsizei; height: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompressedTexSubImage1DARB: procedure(target: GLenum; level: GLint; xoffset: GLint; width: GLsizei; format: GLenum; imageSize: GLsizei; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCompressedTexImageARB: procedure(target: GLenum; lod: GLint; img: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_texture_compression: Boolean;
+
+//***** GL_ARB_texture_env_combine *****//
+const
+  GL_COMBINE_ARB = $8570;
+  GL_COMBINE_RGB_ARB = $8571;
+  GL_COMBINE_ALPHA_ARB = $8572;
+  GL_SOURCE0_RGB_ARB = $8580;
+  GL_SOURCE1_RGB_ARB = $8581;
+  GL_SOURCE2_RGB_ARB = $8582;
+  GL_SOURCE0_ALPHA_ARB = $8588;
+  GL_SOURCE1_ALPHA_ARB = $8589;
+  GL_SOURCE2_ALPHA_ARB = $858A;
+  GL_OPERAND0_RGB_ARB = $8590;
+  GL_OPERAND1_RGB_ARB = $8591;
+  GL_OPERAND2_RGB_ARB = $8592;
+  GL_OPERAND0_ALPHA_ARB = $8598;
+  GL_OPERAND1_ALPHA_ARB = $8599;
+  GL_OPERAND2_ALPHA_ARB = $859A;
+  GL_RGB_SCALE_ARB = $8573;
+  GL_ADD_SIGNED_ARB = $8574;
+  GL_INTERPOLATE_ARB = $8575;
+  GL_SUBTRACT_ARB = $84E7;
+  GL_CONSTANT_ARB = $8576;
+  GL_PRIMARY_COLOR_ARB = $8577;
+  GL_PREVIOUS_ARB = $8578;
+
+function Load_GL_ARB_texture_env_combine: Boolean;
+
+//***** GL_ARB_texture_env_crossbar *****//
+
+function Load_GL_ARB_texture_env_crossbar: Boolean;
+
+//***** GL_ARB_texture_env_dot3 *****//
+const
+  GL_DOT3_RGB_ARB = $86AE;
+  GL_DOT3_RGBA_ARB = $86AF;
+
+function Load_GL_ARB_texture_env_dot3: Boolean;
+
+//***** GL_ARB_texture_mirrored_repeat *****//
+const
+  GL_MIRRORED_REPEAT_ARB = $8370;
+
+function Load_GL_ARB_texture_mirrored_repeat: Boolean;
+
+//***** GL_ARB_vertex_blend *****//
+const
+  GL_MAX_VERTEX_UNITS_ARB = $86A4;
+  GL_ACTIVE_VERTEX_UNITS_ARB = $86A5;
+  GL_WEIGHT_SUM_UNITY_ARB = $86A6;
+  GL_VERTEX_BLEND_ARB = $86A7;
+  GL_MODELVIEW0_ARB = $1700;
+  GL_MODELVIEW1_ARB = $850A;
+  GL_MODELVIEW2_ARB = $8722;
+  GL_MODELVIEW3_ARB = $8723;
+  GL_MODELVIEW4_ARB = $8724;
+  GL_MODELVIEW5_ARB = $8725;
+  GL_MODELVIEW6_ARB = $8726;
+  GL_MODELVIEW7_ARB = $8727;
+  GL_MODELVIEW8_ARB = $8728;
+  GL_MODELVIEW9_ARB = $8729;
+  GL_MODELVIEW10_ARB = $872A;
+  GL_MODELVIEW11_ARB = $872B;
+  GL_MODELVIEW12_ARB = $872C;
+  GL_MODELVIEW13_ARB = $872D;
+  GL_MODELVIEW14_ARB = $872E;
+  GL_MODELVIEW15_ARB = $872F;
+  GL_MODELVIEW16_ARB = $8730;
+  GL_MODELVIEW17_ARB = $8731;
+  GL_MODELVIEW18_ARB = $8732;
+  GL_MODELVIEW19_ARB = $8733;
+  GL_MODELVIEW20_ARB = $8734;
+  GL_MODELVIEW21_ARB = $8735;
+  GL_MODELVIEW22_ARB = $8736;
+  GL_MODELVIEW23_ARB = $8737;
+  GL_MODELVIEW24_ARB = $8738;
+  GL_MODELVIEW25_ARB = $8739;
+  GL_MODELVIEW26_ARB = $873A;
+  GL_MODELVIEW27_ARB = $873B;
+  GL_MODELVIEW28_ARB = $873C;
+  GL_MODELVIEW29_ARB = $873D;
+  GL_MODELVIEW30_ARB = $873E;
+  GL_MODELVIEW31_ARB = $873F;
+  GL_CURRENT_WEIGHT_ARB = $86A8;
+  GL_WEIGHT_ARRAY_TYPE_ARB = $86A9;
+  GL_WEIGHT_ARRAY_STRIDE_ARB = $86AA;
+  GL_WEIGHT_ARRAY_SIZE_ARB = $86AB;
+  GL_WEIGHT_ARRAY_POINTER_ARB = $86AC;
+  GL_WEIGHT_ARRAY_ARB = $86AD;
+var
+  glWeightbvARB: procedure(size: GLint; weights: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightsvARB: procedure(size: GLint; weights: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightivARB: procedure(size: GLint; weights: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightfvARB: procedure(size: GLint; weights: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightdvARB: procedure(size: GLint; weights: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightvARB: procedure(size: GLint; weights: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightubvARB: procedure(size: GLint; weights: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightusvARB: procedure(size: GLint; weights: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightuivARB: procedure(size: GLint; weights: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWeightPointerARB: procedure(size: GLint; _type: GLenum; stride: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexBlendARB: procedure(count: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_vertex_blend: Boolean;
+
+//***** GL_ARB_vertex_program *****//
+const
+  GL_VERTEX_PROGRAM_ARB = $8620;
+  GL_VERTEX_PROGRAM_POINT_SIZE_ARB = $8642;
+  GL_VERTEX_PROGRAM_TWO_SIDE_ARB = $8643;
+  GL_COLOR_SUM_ARB = $8458;
+  GL_PROGRAM_FORMAT_ASCII_ARB = $8875;
+  GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB = $8622;
+  GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB = $8623;
+  GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB = $8624;
+  GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB = $8625;
+  GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB = $886A;
+  GL_CURRENT_VERTEX_ATTRIB_ARB = $8626;
+  GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB = $8645;
+  GL_PROGRAM_LENGTH_ARB = $8627;
+  GL_PROGRAM_FORMAT_ARB = $8876;
+  GL_PROGRAM_BINDING_ARB = $8677;
+  GL_PROGRAM_INSTRUCTIONS_ARB = $88A0;
+  GL_MAX_PROGRAM_INSTRUCTIONS_ARB = $88A1;
+  GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB = $88A2;
+  GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB = $88A3;
+  GL_PROGRAM_TEMPORARIES_ARB = $88A4;
+  GL_MAX_PROGRAM_TEMPORARIES_ARB = $88A5;
+  GL_PROGRAM_NATIVE_TEMPORARIES_ARB = $88A6;
+  GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB = $88A7;
+  GL_PROGRAM_PARAMETERS_ARB = $88A8;
+  GL_MAX_PROGRAM_PARAMETERS_ARB = $88A9;
+  GL_PROGRAM_NATIVE_PARAMETERS_ARB = $88AA;
+  GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB = $88AB;
+  GL_PROGRAM_ATTRIBS_ARB = $88AC;
+  GL_MAX_PROGRAM_ATTRIBS_ARB = $88AD;
+  GL_PROGRAM_NATIVE_ATTRIBS_ARB = $88AE;
+  GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB = $88AF;
+  GL_PROGRAM_ADDRESS_REGISTERS_ARB = $88B0;
+  GL_MAX_PROGRAM_ADDRESS_REGISTERS_ARB = $88B1;
+  GL_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB = $88B2;
+  GL_MAX_PROGRAM_NATIVE_ADDRESS_REGISTERS_ARB = $88B3;
+  GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB = $88B4;
+  GL_MAX_PROGRAM_ENV_PARAMETERS_ARB = $88B5;
+  GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB = $88B6;
+  GL_PROGRAM_STRING_ARB = $8628;
+  GL_PROGRAM_ERROR_POSITION_ARB = $864B;
+  GL_CURRENT_MATRIX_ARB = $8641;
+  GL_TRANSPOSE_CURRENT_MATRIX_ARB = $88B7;
+  GL_CURRENT_MATRIX_STACK_DEPTH_ARB = $8640;
+  GL_MAX_VERTEX_ATTRIBS_ARB = $8869;
+  GL_MAX_PROGRAM_MATRICES_ARB = $862F;
+  GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB = $862E;
+  GL_PROGRAM_ERROR_STRING_ARB = $8874;
+  GL_MATRIX0_ARB = $88C0;
+  GL_MATRIX1_ARB = $88C1;
+  GL_MATRIX2_ARB = $88C2;
+  GL_MATRIX3_ARB = $88C3;
+  GL_MATRIX4_ARB = $88C4;
+  GL_MATRIX5_ARB = $88C5;
+  GL_MATRIX6_ARB = $88C6;
+  GL_MATRIX7_ARB = $88C7;
+  GL_MATRIX8_ARB = $88C8;
+  GL_MATRIX9_ARB = $88C9;
+  GL_MATRIX10_ARB = $88CA;
+  GL_MATRIX11_ARB = $88CB;
+  GL_MATRIX12_ARB = $88CC;
+  GL_MATRIX13_ARB = $88CD;
+  GL_MATRIX14_ARB = $88CE;
+  GL_MATRIX15_ARB = $88CF;
+  GL_MATRIX16_ARB = $88D0;
+  GL_MATRIX17_ARB = $88D1;
+  GL_MATRIX18_ARB = $88D2;
+  GL_MATRIX19_ARB = $88D3;
+  GL_MATRIX20_ARB = $88D4;
+  GL_MATRIX21_ARB = $88D5;
+  GL_MATRIX22_ARB = $88D6;
+  GL_MATRIX23_ARB = $88D7;
+  GL_MATRIX24_ARB = $88D8;
+  GL_MATRIX25_ARB = $88D9;
+  GL_MATRIX26_ARB = $88DA;
+  GL_MATRIX27_ARB = $88DB;
+  GL_MATRIX28_ARB = $88DC;
+  GL_MATRIX29_ARB = $88DD;
+  GL_MATRIX30_ARB = $88DE;
+  GL_MATRIX31_ARB = $88DF;
+var
+  glVertexAttrib1sARB: procedure(index: GLuint; x: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1fARB: procedure(index: GLuint; x: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1dARB: procedure(index: GLuint; x: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2sARB: procedure(index: GLuint; x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2fARB: procedure(index: GLuint; x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2dARB: procedure(index: GLuint; x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3sARB: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3fARB: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3dARB: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4sARB: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort; w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4fARB: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4dARB: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NubARB: procedure(index: GLuint; x: GLubyte; y: GLubyte; z: GLubyte; w: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1svARB: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1fvARB: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1dvARB: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2svARB: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2fvARB: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2dvARB: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3svARB: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3fvARB: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3dvARB: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4bvARB: procedure(index: GLuint; const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4svARB: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4ivARB: procedure(index: GLuint; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4ubvARB: procedure(index: GLuint; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4usvARB: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4uivARB: procedure(index: GLuint; const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4fvARB: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4dvARB: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NbvARB: procedure(index: GLuint; const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NsvARB: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NivARB: procedure(index: GLuint; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NubvARB: procedure(index: GLuint; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NusvARB: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4NuivARB: procedure(index: GLuint; const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribPointerARB: procedure(index: GLuint; size: GLint; _type: GLenum; normalized: GLboolean; stride: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnableVertexAttribArrayARB: procedure(index: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDisableVertexAttribArrayARB: procedure(index: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramStringARB: procedure(target: GLenum; format: GLenum; len: GLsizei; const _string: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindProgramARB: procedure(target: GLenum; _program: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteProgramsARB: procedure(n: GLsizei; const programs: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenProgramsARB: procedure(n: GLsizei; programs: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramEnvParameter4dARB: procedure(target: GLenum; index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramEnvParameter4dvARB: procedure(target: GLenum; index: GLuint; const params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramEnvParameter4fARB: procedure(target: GLenum; index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramEnvParameter4fvARB: procedure(target: GLenum; index: GLuint; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramLocalParameter4dARB: procedure(target: GLenum; index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramLocalParameter4dvARB: procedure(target: GLenum; index: GLuint; const params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramLocalParameter4fARB: procedure(target: GLenum; index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramLocalParameter4fvARB: procedure(target: GLenum; index: GLuint; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramEnvParameterdvARB: procedure(target: GLenum; index: GLuint; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramEnvParameterfvARB: procedure(target: GLenum; index: GLuint; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramLocalParameterdvARB: procedure(target: GLenum; index: GLuint; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramLocalParameterfvARB: procedure(target: GLenum; index: GLuint; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramivARB: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramStringARB: procedure(target: GLenum; pname: GLenum; _string: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribdvARB: procedure(index: GLuint; pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribfvARB: procedure(index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribivARB: procedure(index: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribPointervARB: procedure(index: GLuint; pname: GLenum; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsProgramARB: function(_program: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_vertex_program: Boolean;
+
+//***** GL_ARB_window_pos *****//
+var
+  glWindowPos2dARB: procedure(x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2fARB: procedure(x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2iARB: procedure(x: GLint; y: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2sARB: procedure(x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2dvARB: procedure(const p: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2fvARB: procedure(const p: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2ivARB: procedure(const p: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2svARB: procedure(const p: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3dARB: procedure(x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3fARB: procedure(x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3iARB: procedure(x: GLint; y: GLint; z: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3sARB: procedure(x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3dvARB: procedure(const p: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3fvARB: procedure(const p: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3ivARB: procedure(const p: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3svARB: procedure(const p: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_window_pos: Boolean;
+
+//***** GL_EXT_422_pixels *****//
+const
+  GL_422_EXT = $80CC;
+  GL_422_REV_EXT = $80CD;
+  GL_422_AVERAGE_EXT = $80CE;
+  GL_422_REV_AVERAGE_EXT = $80CF;
+
+function Load_GL_EXT_422_pixels: Boolean;
+
+//***** GL_EXT_abgr *****//
+const
+  GL_ABGR_EXT = $8000;
+
+function Load_GL_EXT_abgr: Boolean;
+
+//***** GL_EXT_bgra *****//
+const
+  GL_BGR_EXT = $80E0;
+  GL_BGRA_EXT = $80E1;
+
+function Load_GL_EXT_bgra: Boolean;
+
+//***** GL_EXT_blend_color *****//
+const
+  GL_CONSTANT_COLOR_EXT = $8001;
+  GL_ONE_MINUS_CONSTANT_COLOR_EXT = $8002;
+  GL_CONSTANT_ALPHA_EXT = $8003;
+  GL_ONE_MINUS_CONSTANT_ALPHA_EXT = $8004;
+  GL_BLEND_COLOR_EXT = $8005;
+var
+  glBlendColorEXT: procedure(red: GLclampf; green: GLclampf; blue: GLclampf; alpha: GLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_blend_color: Boolean;
+
+//***** GL_EXT_blend_func_separate *****//
+const
+  GL_BLEND_DST_RGB_EXT = $80C8;
+  GL_BLEND_SRC_RGB_EXT = $80C9;
+  GL_BLEND_DST_ALPHA_EXT = $80CA;
+  GL_BLEND_SRC_ALPHA_EXT = $80CB;
+var
+  glBlendFuncSeparateEXT: procedure(sfactorRGB: GLenum; dfactorRGB: GLenum; sfactorAlpha: GLenum; dfactorAlpha: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_blend_func_separate: Boolean;
+
+//***** GL_EXT_blend_logic_op *****//
+
+function Load_GL_EXT_blend_logic_op: Boolean;
+
+//***** GL_EXT_blend_minmax *****//
+const
+  GL_FUNC_ADD_EXT = $8006;
+  GL_MIN_EXT = $8007;
+  GL_MAX_EXT = $8008;
+  GL_BLEND_EQUATION_EXT = $8009;
+var
+  glBlendEquationEXT: procedure(mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_blend_minmax: Boolean;
+
+//***** GL_EXT_blend_subtract *****//
+const
+  GL_FUNC_SUBTRACT_EXT = $800A;
+  GL_FUNC_REVERSE_SUBTRACT_EXT = $800B;
+
+function Load_GL_EXT_blend_subtract: Boolean;
+
+//***** GL_EXT_clip_volume_hint *****//
+const
+  GL_CLIP_VOLUME_CLIPPING_HINT_EXT = $80F0;
+
+function Load_GL_EXT_clip_volume_hint: Boolean;
+
+//***** GL_EXT_color_subtable *****//
+var
+  glColorSubTableEXT: procedure(target: GLenum; start: GLsizei; count: GLsizei; format: GLenum; _type: GLenum; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyColorSubTableEXT: procedure(target: GLenum; start: GLsizei; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_color_subtable: Boolean;
+
+//***** GL_EXT_compiled_vertex_array *****//
+const
+  GL_ARRAY_ELEMENT_LOCK_FIRST_EXT = $81A8;
+  GL_ARRAY_ELEMENT_LOCK_COUNT_EXT = $81A9;
+var
+  glLockArraysEXT: procedure(first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUnlockArraysEXT: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_compiled_vertex_array: Boolean;
+
+//***** GL_EXT_convolution *****//
+const
+  GL_CONVOLUTION_1D_EXT = $8010;
+  GL_CONVOLUTION_2D_EXT = $8011;
+  GL_SEPARABLE_2D_EXT = $8012;
+  GL_CONVOLUTION_BORDER_MODE_EXT = $8013;
+  GL_CONVOLUTION_FILTER_SCALE_EXT = $8014;
+  GL_CONVOLUTION_FILTER_BIAS_EXT = $8015;
+  GL_REDUCE_EXT = $8016;
+  GL_CONVOLUTION_FORMAT_EXT = $8017;
+  GL_CONVOLUTION_WIDTH_EXT = $8018;
+  GL_CONVOLUTION_HEIGHT_EXT = $8019;
+  GL_MAX_CONVOLUTION_WIDTH_EXT = $801A;
+  GL_MAX_CONVOLUTION_HEIGHT_EXT = $801B;
+  GL_POST_CONVOLUTION_RED_SCALE_EXT = $801C;
+  GL_POST_CONVOLUTION_GREEN_SCALE_EXT = $801D;
+  GL_POST_CONVOLUTION_BLUE_SCALE_EXT = $801E;
+  GL_POST_CONVOLUTION_ALPHA_SCALE_EXT = $801F;
+  GL_POST_CONVOLUTION_RED_BIAS_EXT = $8020;
+  GL_POST_CONVOLUTION_GREEN_BIAS_EXT = $8021;
+  GL_POST_CONVOLUTION_BLUE_BIAS_EXT = $8022;
+  GL_POST_CONVOLUTION_ALPHA_BIAS_EXT = $8023;
+var
+  glConvolutionFilter1DEXT: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; format: GLenum; _type: GLenum; const image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionFilter2DEXT: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei; format: GLenum; _type: GLenum; const image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyConvolutionFilter1DEXT: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyConvolutionFilter2DEXT: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei; height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionFilterEXT: procedure(target: GLenum; format: GLenum; _type: GLenum; image: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSeparableFilter2DEXT: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei; format: GLenum; _type: GLenum; const row: PGLvoid; const column: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetSeparableFilterEXT: procedure(target: GLenum; format: GLenum; _type: GLenum; row: PGLvoid; column: PGLvoid; span: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameteriEXT: procedure(target: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameterivEXT: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameterfEXT: procedure(target: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glConvolutionParameterfvEXT: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionParameterivEXT: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetConvolutionParameterfvEXT: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_convolution: Boolean;
+
+//***** GL_EXT_histogram *****//
+const
+  GL_HISTOGRAM_EXT = $8024;
+  GL_PROXY_HISTOGRAM_EXT = $8025;
+  GL_HISTOGRAM_WIDTH_EXT = $8026;
+  GL_HISTOGRAM_FORMAT_EXT = $8027;
+  GL_HISTOGRAM_RED_SIZE_EXT = $8028;
+  GL_HISTOGRAM_GREEN_SIZE_EXT = $8029;
+  GL_HISTOGRAM_BLUE_SIZE_EXT = $802A;
+  GL_HISTOGRAM_ALPHA_SIZE_EXT = $802B;
+  GL_HISTOGRAM_LUMINANCE_SIZE_EXT = $802C;
+  GL_HISTOGRAM_SINK_EXT = $802D;
+  GL_MINMAX_EXT = $802E;
+  GL_MINMAX_FORMAT_EXT = $802F;
+  GL_MINMAX_SINK_EXT = $8030;
+var
+  glHistogramEXT: procedure(target: GLenum; width: GLsizei; internalformat: GLenum; sink: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glResetHistogramEXT: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogramEXT: procedure(target: GLenum; reset: GLboolean; format: GLenum; _type: GLenum; values: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogramParameterivEXT: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHistogramParameterfvEXT: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMinmaxEXT: procedure(target: GLenum; internalformat: GLenum; sink: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glResetMinmaxEXT: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmaxEXT: procedure(target: GLenum; reset: GLboolean; format: GLenum; _type: GLenum; values: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmaxParameterivEXT: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMinmaxParameterfvEXT: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_histogram: Boolean;
+
+//***** GL_EXT_multi_draw_arrays *****//
+var
+  glMultiDrawArraysEXT: procedure(mode: GLenum; first: PGLint; count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawElementsEXT: procedure(mode: GLenum; count: PGLsizei; _type: GLenum; const indices: PGLvoid; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_multi_draw_arrays: Boolean;
+
+//***** GL_EXT_packed_pixels *****//
+const
+  GL_UNSIGNED_BYTE_3_3_2_EXT = $8032;
+  GL_UNSIGNED_SHORT_4_4_4_4_EXT = $8033;
+  GL_UNSIGNED_SHORT_5_5_5_1_EXT = $8034;
+  GL_UNSIGNED_INT_8_8_8_8_EXT = $8035;
+  GL_UNSIGNED_INT_10_10_10_2_EXT = $8036;
+
+function Load_GL_EXT_packed_pixels: Boolean;
+
+//***** GL_EXT_paletted_texture *****//
+const
+  GL_COLOR_INDEX1_EXT = $80E2;
+  GL_COLOR_INDEX2_EXT = $80E3;
+  GL_COLOR_INDEX4_EXT = $80E4;
+  GL_COLOR_INDEX8_EXT = $80E5;
+  GL_COLOR_INDEX12_EXT = $80E6;
+  GL_COLOR_INDEX16_EXT = $80E7;
+  GL_COLOR_TABLE_FORMAT_EXT = $80D8;
+  GL_COLOR_TABLE_WIDTH_EXT = $80D9;
+  GL_COLOR_TABLE_RED_SIZE_EXT = $80DA;
+  GL_COLOR_TABLE_GREEN_SIZE_EXT = $80DB;
+  GL_COLOR_TABLE_BLUE_SIZE_EXT = $80DC;
+  GL_COLOR_TABLE_ALPHA_SIZE_EXT = $80DD;
+  GL_COLOR_TABLE_LUMINANCE_SIZE_EXT = $80DE;
+  GL_COLOR_TABLE_INTENSITY_SIZE_EXT = $80DF;
+  GL_TEXTURE_INDEX_SIZE_EXT = $80ED;
+  GL_TEXTURE_1D = $0DE0;
+  GL_TEXTURE_2D = $0DE1;
+  GL_TEXTURE_3D_EXT = $806F;
+  // GL_TEXTURE_CUBE_MAP_ARB  { already defined }
+  GL_PROXY_TEXTURE_1D = $8063;
+  GL_PROXY_TEXTURE_2D = $8064;
+  GL_PROXY_TEXTURE_3D_EXT = $8070;
+  // GL_PROXY_TEXTURE_CUBE_MAP_ARB  { already defined }
+  // GL_TEXTURE_1D  { already defined }
+  // GL_TEXTURE_2D  { already defined }
+  // GL_TEXTURE_3D_EXT  { already defined }
+  // GL_TEXTURE_CUBE_MAP_ARB  { already defined }
+var
+  glColorTableEXT: procedure(target: GLenum; internalFormat: GLenum; width: GLsizei; format: GLenum; _type: GLenum; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  // glColorSubTableEXT  { already defined }
+  glGetColorTableEXT: procedure(target: GLenum; format: GLenum; _type: GLenum; data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameterivEXT: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameterfvEXT: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_paletted_texture: Boolean;
+
+//***** GL_EXT_point_parameters *****//
+const
+  GL_POINT_SIZE_MIN_EXT = $8126;
+  GL_POINT_SIZE_MAX_EXT = $8127;
+  GL_POINT_FADE_THRESHOLD_SIZE_EXT = $8128;
+  GL_DISTANCE_ATTENUATION_EXT = $8129;
+var
+  glPointParameterfEXT: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameterfvEXT: procedure(pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_point_parameters: Boolean;
+
+//***** GL_EXT_polygon_offset *****//
+const
+  GL_POLYGON_OFFSET_EXT = $8037;
+  GL_POLYGON_OFFSET_FACTOR_EXT = $8038;
+  GL_POLYGON_OFFSET_BIAS_EXT = $8039;
+var
+  glPolygonOffsetEXT: procedure(factor: GLfloat; bias: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_polygon_offset: Boolean;
+
+//***** GL_EXT_separate_specular_color *****//
+const
+  GL_LIGHT_MODEL_COLOR_CONTROL_EXT = $81F8;
+  GL_SINGLE_COLOR_EXT = $81F9;
+  GL_SEPARATE_SPECULAR_COLOR_EXT = $81FA;
+
+function Load_GL_EXT_separate_specular_color: Boolean;
+
+//***** GL_EXT_shadow_funcs *****//
+
+function Load_GL_EXT_shadow_funcs: Boolean;
+
+//***** GL_EXT_shared_texture_palette *****//
+const
+  GL_SHARED_TEXTURE_PALETTE_EXT = $81FB;
+
+function Load_GL_EXT_shared_texture_palette: Boolean;
+
+//***** GL_EXT_stencil_two_side *****//
+const
+  GL_STENCIL_TEST_TWO_SIDE_EXT = $8910;
+  GL_ACTIVE_STENCIL_FACE_EXT = $8911;
+var
+  glActiveStencilFaceEXT: procedure(face: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_stencil_two_side: Boolean;
+
+//***** GL_EXT_stencil_wrap *****//
+const
+  GL_INCR_WRAP_EXT = $8507;
+  GL_DECR_WRAP_EXT = $8508;
+
+function Load_GL_EXT_stencil_wrap: Boolean;
+
+//***** GL_EXT_subtexture *****//
+var
+  glTexSubImage1DEXT: procedure(target: GLenum; level: GLint; xoffset: GLint; width: GLsizei; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage2DEXT: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; width: GLsizei; height: GLsizei; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage3DEXT: procedure(target: GLenum; level: GLint; xoffset: GLint; yoffset: GLint; zoffset: GLint; width: GLsizei; height: GLsizei; depth: GLsizei; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_subtexture: Boolean;
+
+//***** GL_EXT_texture3D *****//
+const
+  GL_PACK_SKIP_IMAGES_EXT = $806B;
+  GL_PACK_IMAGE_HEIGHT_EXT = $806C;
+  GL_UNPACK_SKIP_IMAGES_EXT = $806D;
+  GL_UNPACK_IMAGE_HEIGHT_EXT = $806E;
+  // GL_TEXTURE_3D_EXT  { already defined }
+  // GL_PROXY_TEXTURE_3D_EXT  { already defined }
+  GL_TEXTURE_DEPTH_EXT = $8071;
+  GL_TEXTURE_WRAP_R_EXT = $8072;
+  GL_MAX_3D_TEXTURE_SIZE_EXT = $8073;
+var
+  glTexImage3DEXT: procedure(target: GLenum; level: GLint; internalformat: GLenum; width: GLsizei; height: GLsizei; depth: GLsizei; border: GLint; format: GLenum; _type: GLenum; const pixels: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_texture3D: Boolean;
+
+//***** GL_EXT_texture_compression_s3tc *****//
+const
+  GL_COMPRESSED_RGB_S3TC_DXT1_EXT = $83F0;
+  GL_COMPRESSED_RGBA_S3TC_DXT1_EXT = $83F1;
+  GL_COMPRESSED_RGBA_S3TC_DXT3_EXT = $83F2;
+  GL_COMPRESSED_RGBA_S3TC_DXT5_EXT = $83F3;
+
+function Load_GL_EXT_texture_compression_s3tc: Boolean;
+
+//***** GL_EXT_texture_env_add *****//
+
+function Load_GL_EXT_texture_env_add: Boolean;
+
+//***** GL_EXT_texture_env_combine *****//
+const
+  GL_COMBINE_EXT = $8570;
+  GL_COMBINE_RGB_EXT = $8571;
+  GL_COMBINE_ALPHA_EXT = $8572;
+  GL_SOURCE0_RGB_EXT = $8580;
+  GL_SOURCE1_RGB_EXT = $8581;
+  GL_SOURCE2_RGB_EXT = $8582;
+  GL_SOURCE0_ALPHA_EXT = $8588;
+  GL_SOURCE1_ALPHA_EXT = $8589;
+  GL_SOURCE2_ALPHA_EXT = $858A;
+  GL_OPERAND0_RGB_EXT = $8590;
+  GL_OPERAND1_RGB_EXT = $8591;
+  GL_OPERAND2_RGB_EXT = $8592;
+  GL_OPERAND0_ALPHA_EXT = $8598;
+  GL_OPERAND1_ALPHA_EXT = $8599;
+  GL_OPERAND2_ALPHA_EXT = $859A;
+  GL_RGB_SCALE_EXT = $8573;
+  GL_ADD_SIGNED_EXT = $8574;
+  GL_INTERPOLATE_EXT = $8575;
+  GL_CONSTANT_EXT = $8576;
+  GL_PRIMARY_COLOR_EXT = $8577;
+  GL_PREVIOUS_EXT = $8578;
+
+function Load_GL_EXT_texture_env_combine: Boolean;
+
+//***** GL_EXT_texture_env_dot3 *****//
+const
+  GL_DOT3_RGB_EXT = $8740;
+  GL_DOT3_RGBA_EXT = $8741;
+
+function Load_GL_EXT_texture_env_dot3: Boolean;
+
+//***** GL_EXT_texture_filter_anisotropic *****//
+const
+  GL_TEXTURE_MAX_ANISOTROPY_EXT = $84FE;
+  GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT = $84FF;
+
+function Load_GL_EXT_texture_filter_anisotropic: Boolean;
+
+//***** GL_EXT_texture_lod_bias *****//
+const
+  GL_TEXTURE_FILTER_CONTROL_EXT = $8500;
+  GL_TEXTURE_LOD_BIAS_EXT = $8501;
+  GL_MAX_TEXTURE_LOD_BIAS_EXT = $84FD;
+
+function Load_GL_EXT_texture_lod_bias: Boolean;
+
+//***** GL_EXT_texture_object *****//
+const
+  GL_TEXTURE_PRIORITY_EXT = $8066;
+  GL_TEXTURE_RESIDENT_EXT = $8067;
+  GL_TEXTURE_1D_BINDING_EXT = $8068;
+  GL_TEXTURE_2D_BINDING_EXT = $8069;
+  GL_TEXTURE_3D_BINDING_EXT = $806A;
+var
+  glGenTexturesEXT: procedure(n: GLsizei; textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteTexturesEXT: procedure(n: GLsizei; const textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindTextureEXT: procedure(target: GLenum; texture: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPrioritizeTexturesEXT: procedure(n: GLsizei; const textures: PGLuint; const priorities: PGLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAreTexturesResidentEXT: function(n: GLsizei; const textures: PGLuint; residences: PGLboolean): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsTextureEXT: function(texture: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_texture_object: Boolean;
+
+//***** GL_EXT_vertex_array *****//
+const
+  GL_VERTEX_ARRAY_EXT = $8074;
+  GL_NORMAL_ARRAY_EXT = $8075;
+  GL_COLOR_ARRAY_EXT = $8076;
+  GL_INDEX_ARRAY_EXT = $8077;
+  GL_TEXTURE_COORD_ARRAY_EXT = $8078;
+  GL_EDGE_FLAG_ARRAY_EXT = $8079;
+  GL_DOUBLE_EXT = $140A;
+  GL_VERTEX_ARRAY_SIZE_EXT = $807A;
+  GL_VERTEX_ARRAY_TYPE_EXT = $807B;
+  GL_VERTEX_ARRAY_STRIDE_EXT = $807C;
+  GL_VERTEX_ARRAY_COUNT_EXT = $807D;
+  GL_NORMAL_ARRAY_TYPE_EXT = $807E;
+  GL_NORMAL_ARRAY_STRIDE_EXT = $807F;
+  GL_NORMAL_ARRAY_COUNT_EXT = $8080;
+  GL_COLOR_ARRAY_SIZE_EXT = $8081;
+  GL_COLOR_ARRAY_TYPE_EXT = $8082;
+  GL_COLOR_ARRAY_STRIDE_EXT = $8083;
+  GL_COLOR_ARRAY_COUNT_EXT = $8084;
+  GL_INDEX_ARRAY_TYPE_EXT = $8085;
+  GL_INDEX_ARRAY_STRIDE_EXT = $8086;
+  GL_INDEX_ARRAY_COUNT_EXT = $8087;
+  GL_TEXTURE_COORD_ARRAY_SIZE_EXT = $8088;
+  GL_TEXTURE_COORD_ARRAY_TYPE_EXT = $8089;
+  GL_TEXTURE_COORD_ARRAY_STRIDE_EXT = $808A;
+  GL_TEXTURE_COORD_ARRAY_COUNT_EXT = $808B;
+  GL_EDGE_FLAG_ARRAY_STRIDE_EXT = $808C;
+  GL_EDGE_FLAG_ARRAY_COUNT_EXT = $808D;
+  GL_VERTEX_ARRAY_POINTER_EXT = $808E;
+  GL_NORMAL_ARRAY_POINTER_EXT = $808F;
+  GL_COLOR_ARRAY_POINTER_EXT = $8090;
+  GL_INDEX_ARRAY_POINTER_EXT = $8091;
+  GL_TEXTURE_COORD_ARRAY_POINTER_EXT = $8092;
+  GL_EDGE_FLAG_ARRAY_POINTER_EXT = $8093;
+var
+  glArrayElementEXT: procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawArraysEXT: procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexPointerEXT: procedure(size: GLint; _type: GLenum; stride: GLsizei; count: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalPointerEXT: procedure(_type: GLenum; stride: GLsizei; count: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorPointerEXT: procedure(size: GLint; _type: GLenum; stride: GLsizei; count: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexPointerEXT: procedure(_type: GLenum; stride: GLsizei; count: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoordPointerEXT: procedure(size: GLint; _type: GLenum; stride: GLsizei; count: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagPointerEXT: procedure(stride: GLsizei; count: GLsizei; const pointer: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPointervEXT: procedure(pname: GLenum; params: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_vertex_array: Boolean;
+
+//***** GL_EXT_vertex_shader *****//
+const
+  GL_VERTEX_SHADER_EXT = $8780;
+  GL_VARIANT_VALUE_EXT = $87E4;
+  GL_VARIANT_DATATYPE_EXT = $87E5;
+  GL_VARIANT_ARRAY_STRIDE_EXT = $87E6;
+  GL_VARIANT_ARRAY_TYPE_EXT = $87E7;
+  GL_VARIANT_ARRAY_EXT = $87E8;
+  GL_VARIANT_ARRAY_POINTER_EXT = $87E9;
+  GL_INVARIANT_VALUE_EXT = $87EA;
+  GL_INVARIANT_DATATYPE_EXT = $87EB;
+  GL_LOCAL_CONSTANT_VALUE_EXT = $87EC;
+  GL_LOCAL_CONSTANT_DATATYPE_EXT = $87ED;
+  GL_OP_INDEX_EXT = $8782;
+  GL_OP_NEGATE_EXT = $8783;
+  GL_OP_DOT3_EXT = $8784;
+  GL_OP_DOT4_EXT = $8785;
+  GL_OP_MUL_EXT = $8786;
+  GL_OP_ADD_EXT = $8787;
+  GL_OP_MADD_EXT = $8788;
+  GL_OP_FRAC_EXT = $8789;
+  GL_OP_MAX_EXT = $878A;
+  GL_OP_MIN_EXT = $878B;
+  GL_OP_SET_GE_EXT = $878C;
+  GL_OP_SET_LT_EXT = $878D;
+  GL_OP_CLAMP_EXT = $878E;
+  GL_OP_FLOOR_EXT = $878F;
+  GL_OP_ROUND_EXT = $8790;
+  GL_OP_EXP_BASE_2_EXT = $8791;
+  GL_OP_LOG_BASE_2_EXT = $8792;
+  GL_OP_POWER_EXT = $8793;
+  GL_OP_RECIP_EXT = $8794;
+  GL_OP_RECIP_SQRT_EXT = $8795;
+  GL_OP_SUB_EXT = $8796;
+  GL_OP_CROSS_PRODUCT_EXT = $8797;
+  GL_OP_MULTIPLY_MATRIX_EXT = $8798;
+  GL_OP_MOV_EXT = $8799;
+  GL_OUTPUT_VERTEX_EXT = $879A;
+  GL_OUTPUT_COLOR0_EXT = $879B;
+  GL_OUTPUT_COLOR1_EXT = $879C;
+  GL_OUTPUT_TEXTURE_COORD0_EXT = $879D;
+  GL_OUTPUT_TEXTURE_COORD1_EXT = $879E;
+  GL_OUTPUT_TEXTURE_COORD2_EXT = $879F;
+  GL_OUTPUT_TEXTURE_COORD3_EXT = $87A0;
+  GL_OUTPUT_TEXTURE_COORD4_EXT = $87A1;
+  GL_OUTPUT_TEXTURE_COORD5_EXT = $87A2;
+  GL_OUTPUT_TEXTURE_COORD6_EXT = $87A3;
+  GL_OUTPUT_TEXTURE_COORD7_EXT = $87A4;
+  GL_OUTPUT_TEXTURE_COORD8_EXT = $87A5;
+  GL_OUTPUT_TEXTURE_COORD9_EXT = $87A6;
+  GL_OUTPUT_TEXTURE_COORD10_EXT = $87A7;
+  GL_OUTPUT_TEXTURE_COORD11_EXT = $87A8;
+  GL_OUTPUT_TEXTURE_COORD12_EXT = $87A9;
+  GL_OUTPUT_TEXTURE_COORD13_EXT = $87AA;
+  GL_OUTPUT_TEXTURE_COORD14_EXT = $87AB;
+  GL_OUTPUT_TEXTURE_COORD15_EXT = $87AC;
+  GL_OUTPUT_TEXTURE_COORD16_EXT = $87AD;
+  GL_OUTPUT_TEXTURE_COORD17_EXT = $87AE;
+  GL_OUTPUT_TEXTURE_COORD18_EXT = $87AF;
+  GL_OUTPUT_TEXTURE_COORD19_EXT = $87B0;
+  GL_OUTPUT_TEXTURE_COORD20_EXT = $87B1;
+  GL_OUTPUT_TEXTURE_COORD21_EXT = $87B2;
+  GL_OUTPUT_TEXTURE_COORD22_EXT = $87B3;
+  GL_OUTPUT_TEXTURE_COORD23_EXT = $87B4;
+  GL_OUTPUT_TEXTURE_COORD24_EXT = $87B5;
+  GL_OUTPUT_TEXTURE_COORD25_EXT = $87B6;
+  GL_OUTPUT_TEXTURE_COORD26_EXT = $87B7;
+  GL_OUTPUT_TEXTURE_COORD27_EXT = $87B8;
+  GL_OUTPUT_TEXTURE_COORD28_EXT = $87B9;
+  GL_OUTPUT_TEXTURE_COORD29_EXT = $87BA;
+  GL_OUTPUT_TEXTURE_COORD30_EXT = $87BB;
+  GL_OUTPUT_TEXTURE_COORD31_EXT = $87BC;
+  GL_OUTPUT_FOG_EXT = $87BD;
+  GL_SCALAR_EXT = $87BE;
+  GL_VECTOR_EXT = $87BF;
+  GL_MATRIX_EXT = $87C0;
+  GL_VARIANT_EXT = $87C1;
+  GL_INVARIANT_EXT = $87C2;
+  GL_LOCAL_CONSTANT_EXT = $87C3;
+  GL_LOCAL_EXT = $87C4;
+  GL_MAX_VERTEX_SHADER_INSTRUCTIONS_EXT = $87C5;
+  GL_MAX_VERTEX_SHADER_VARIANTS_EXT = $87C6;
+  GL_MAX_VERTEX_SHADER_INVARIANTS_EXT = $87C7;
+  GL_MAX_VERTEX_SHADER_LOCAL_CONSTANTS_EXT = $87C8;
+  GL_MAX_VERTEX_SHADER_LOCALS_EXT = $87C9;
+  GL_MAX_OPTIMIZED_VERTEX_SHADER_INSTRUCTIONS_EXT = $87CA;
+  GL_MAX_OPTIMIZED_VERTEX_SHADER_VARIANTS_EXT = $87CB;
+  GL_MAX_OPTIMIZED_VERTEX_SHADER_LOCAL_CONSTANTS_EXT = $87CC;
+  GL_MAX_OPTIMIZED_VERTEX_SHADER_INVARIANTS_EXT = $87CD;
+  GL_MAX_OPTIMIZED_VERTEX_SHADER_LOCALS_EXT = $87CE;
+  GL_VERTEX_SHADER_INSTRUCTIONS_EXT = $87CF;
+  GL_VERTEX_SHADER_VARIANTS_EXT = $87D0;
+  GL_VERTEX_SHADER_INVARIANTS_EXT = $87D1;
+  GL_VERTEX_SHADER_LOCAL_CONSTANTS_EXT = $87D2;
+  GL_VERTEX_SHADER_LOCALS_EXT = $87D3;
+  GL_VERTEX_SHADER_BINDING_EXT = $8781;
+  GL_VERTEX_SHADER_OPTIMIZED_EXT = $87D4;
+  GL_X_EXT = $87D5;
+  GL_Y_EXT = $87D6;
+  GL_Z_EXT = $87D7;
+  GL_W_EXT = $87D8;
+  GL_NEGATIVE_X_EXT = $87D9;
+  GL_NEGATIVE_Y_EXT = $87DA;
+  GL_NEGATIVE_Z_EXT = $87DB;
+  GL_NEGATIVE_W_EXT = $87DC;
+  GL_ZERO_EXT = $87DD;
+  GL_ONE_EXT = $87DE;
+  GL_NEGATIVE_ONE_EXT = $87DF;
+  GL_NORMALIZED_RANGE_EXT = $87E0;
+  GL_FULL_RANGE_EXT = $87E1;
+  GL_CURRENT_VERTEX_EXT = $87E2;
+  GL_MVP_MATRIX_EXT = $87E3;
+var
+  glBeginVertexShaderEXT: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndVertexShaderEXT: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindVertexShaderEXT: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenVertexShadersEXT: function(range: GLuint): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteVertexShaderEXT: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShaderOp1EXT: procedure(op: GLenum; res: GLuint; arg1: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShaderOp2EXT: procedure(op: GLenum; res: GLuint; arg1: GLuint; arg2: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShaderOp3EXT: procedure(op: GLenum; res: GLuint; arg1: GLuint; arg2: GLuint; arg3: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSwizzleEXT: procedure(res: GLuint; _in: GLuint; outX: GLenum; outY: GLenum; outZ: GLenum; outW: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWriteMaskEXT: procedure(res: GLuint; _in: GLuint; outX: GLenum; outY: GLenum; outZ: GLenum; outW: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glInsertComponentEXT: procedure(res: GLuint; src: GLuint; num: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glExtractComponentEXT: procedure(res: GLuint; src: GLuint; num: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenSymbolsEXT: function(datatype: GLenum; storagetype: GLenum; range: GLenum; components: GLuint): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSetInvariantEXT: procedure(id: GLuint; _type: GLenum; addr: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSetLocalConstantEXT: procedure(id: GLuint; _type: GLenum; addr: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantbvEXT: procedure(id: GLuint; addr: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantsvEXT: procedure(id: GLuint; addr: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantivEXT: procedure(id: GLuint; addr: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantfvEXT: procedure(id: GLuint; addr: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantdvEXT: procedure(id: GLuint; addr: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantubvEXT: procedure(id: GLuint; addr: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantusvEXT: procedure(id: GLuint; addr: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantuivEXT: procedure(id: GLuint; addr: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantPointerEXT: procedure(id: GLuint; _type: GLenum; stride: GLuint; addr: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnableVariantClientStateEXT: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDisableVariantClientStateEXT: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindLightParameterEXT: function(light: GLenum; value: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindMaterialParameterEXT: function(face: GLenum; value: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindTexGenParameterEXT: function(_unit: GLenum; coord: GLenum; value: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindTextureUnitParameterEXT: function(_unit: GLenum; value: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindParameterEXT: function(value: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsVariantEnabledEXT: function(id: GLuint; cap: GLenum): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantBooleanvEXT: procedure(id: GLuint; value: GLenum; data: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantIntegervEXT: procedure(id: GLuint; value: GLenum; data: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantFloatvEXT: procedure(id: GLuint; value: GLenum; data: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantPointervEXT: procedure(id: GLuint; value: GLenum; data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetInvariantBooleanvEXT: procedure(id: GLuint; value: GLenum; data: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetInvariantIntegervEXT: procedure(id: GLuint; value: GLenum; data: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetInvariantFloatvEXT: procedure(id: GLuint; value: GLenum; data: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLocalConstantBooleanvEXT: procedure(id: GLuint; value: GLenum; data: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLocalConstantIntegervEXT: procedure(id: GLuint; value: GLenum; data: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLocalConstantFloatvEXT: procedure(id: GLuint; value: GLenum; data: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_vertex_shader: Boolean;
+
+//***** GL_EXT_vertex_weighting *****//
+const
+  GL_VERTEX_WEIGHTING_EXT = $8509;
+  GL_MODELVIEW0_EXT = $1700;
+  GL_MODELVIEW1_EXT = $850A;
+  GL_MODELVIEW0_MATRIX_EXT = $0BA6;
+  GL_MODELVIEW1_MATRIX_EXT = $8506;
+  GL_CURRENT_VERTEX_WEIGHT_EXT = $850B;
+  GL_VERTEX_WEIGHT_ARRAY_EXT = $850C;
+  GL_VERTEX_WEIGHT_ARRAY_SIZE_EXT = $850D;
+  GL_VERTEX_WEIGHT_ARRAY_TYPE_EXT = $850E;
+  GL_VERTEX_WEIGHT_ARRAY_STRIDE_EXT = $850F;
+  GL_MODELVIEW0_STACK_DEPTH_EXT = $0BA3;
+  GL_MODELVIEW1_STACK_DEPTH_EXT = $8502;
+  GL_VERTEX_WEIGHT_ARRAY_POINTER_EXT = $8510;
+var
+  glVertexWeightfEXT: procedure(weight: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexWeightfvEXT: procedure(weight: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexWeightPointerEXT: procedure(size: GLint; _type: GLenum; stride: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_vertex_weighting: Boolean;
+
+//***** GL_HP_occlusion_test *****//
+const
+  GL_OCCLUSION_TEST_HP = $8165;
+  GL_OCCLUSION_TEST_RESULT_HP = $8166;
+
+function Load_GL_HP_occlusion_test: Boolean;
+
+//***** GL_NV_blend_square *****//
+
+function Load_GL_NV_blend_square: Boolean;
+
+//***** GL_NV_copy_depth_to_color *****//
+const
+  GL_DEPTH_STENCIL_TO_RGBA_NV = $886E;
+  GL_DEPTH_STENCIL_TO_BGRA_NV = $886F;
+
+function Load_GL_NV_copy_depth_to_color: Boolean;
+
+//***** GL_NV_depth_clamp *****//
+const
+  GL_DEPTH_CLAMP_NV = $864F;
+
+function Load_GL_NV_depth_clamp: Boolean;
+
+//***** GL_NV_evaluators *****//
+const
+  GL_EVAL_2D_NV = $86C0;
+  GL_EVAL_TRIANGULAR_2D_NV = $86C1;
+  GL_MAP_TESSELLATION_NV = $86C2;
+  GL_MAP_ATTRIB_U_ORDER_NV = $86C3;
+  GL_MAP_ATTRIB_V_ORDER_NV = $86C4;
+  GL_EVAL_FRACTIONAL_TESSELLATION_NV = $86C5;
+  GL_EVAL_VERTEX_ATTRIB0_NV = $86C6;
+  GL_EVAL_VERTEX_ATTRIB1_NV = $86C7;
+  GL_EVAL_VERTEX_ATTRIB2_NV = $86C8;
+  GL_EVAL_VERTEX_ATTRIB3_NV = $86C9;
+  GL_EVAL_VERTEX_ATTRIB4_NV = $86CA;
+  GL_EVAL_VERTEX_ATTRIB5_NV = $86CB;
+  GL_EVAL_VERTEX_ATTRIB6_NV = $86CC;
+  GL_EVAL_VERTEX_ATTRIB7_NV = $86CD;
+  GL_EVAL_VERTEX_ATTRIB8_NV = $86CE;
+  GL_EVAL_VERTEX_ATTRIB9_NV = $86CF;
+  GL_EVAL_VERTEX_ATTRIB10_NV = $86D0;
+  GL_EVAL_VERTEX_ATTRIB11_NV = $86D1;
+  GL_EVAL_VERTEX_ATTRIB12_NV = $86D2;
+  GL_EVAL_VERTEX_ATTRIB13_NV = $86D3;
+  GL_EVAL_VERTEX_ATTRIB14_NV = $86D4;
+  GL_EVAL_VERTEX_ATTRIB15_NV = $86D5;
+  GL_MAX_MAP_TESSELLATION_NV = $86D6;
+  GL_MAX_RATIONAL_EVAL_ORDER_NV = $86D7;
+var
+  glMapControlPointsNV: procedure(target: GLenum; index: GLuint; _type: GLenum; ustride: GLsizei; vstride: GLsizei; uorder: GLint; vorder: GLint; _packed: GLboolean; const points: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapParameterivNV: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapParameterfvNV: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapControlPointsNV: procedure(target: GLenum; index: GLuint; _type: GLenum; ustride: GLsizei; vstride: GLsizei; _packed: GLboolean; points: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapParameterivNV: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapParameterfvNV: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapAttribParameterivNV: procedure(target: GLenum; index: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapAttribParameterfvNV: procedure(target: GLenum; index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalMapsNV: procedure(target: GLenum; mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_evaluators: Boolean;
+
+//***** GL_NV_fence *****//
+const
+  GL_ALL_COMPLETED_NV = $84F2;
+  GL_FENCE_STATUS_NV = $84F3;
+  GL_FENCE_CONDITION_NV = $84F4;
+var
+  glGenFencesNV: procedure(n: GLsizei; fences: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteFencesNV: procedure(n: GLsizei; const fences: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSetFenceNV: procedure(fence: GLuint; condition: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTestFenceNV: function(fence: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFinishFenceNV: procedure(fence: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsFenceNV: function(fence: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFenceivNV: procedure(fence: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_fence: Boolean;
+
+//***** GL_NV_fog_distance *****//
+const
+  GL_FOG_DISTANCE_MODE_NV = $855A;
+  GL_EYE_RADIAL_NV = $855B;
+  GL_EYE_PLANE_ABSOLUTE_NV = $855C;
+
+function Load_GL_NV_fog_distance: Boolean;
+
+//***** GL_NV_light_max_exponent *****//
+const
+  GL_MAX_SHININESS_NV = $8504;
+  GL_MAX_SPOT_EXPONENT_NV = $8505;
+
+function Load_GL_NV_light_max_exponent: Boolean;
+
+//***** GL_NV_multisample_filter_hint *****//
+const
+  GL_MULTISAMPLE_FILTER_HINT_NV = $8534;
+
+function Load_GL_NV_multisample_filter_hint: Boolean;
+
+//***** GL_NV_occlusion_query *****//
+  // GL_OCCLUSION_TEST_HP  { already defined }
+  // GL_OCCLUSION_TEST_RESULT_HP  { already defined }
+const
+  GL_PIXEL_COUNTER_BITS_NV = $8864;
+  GL_CURRENT_OCCLUSION_QUERY_ID_NV = $8865;
+  GL_PIXEL_COUNT_NV = $8866;
+  GL_PIXEL_COUNT_AVAILABLE_NV = $8867;
+var
+  glGenOcclusionQueriesNV: procedure(n: GLsizei; ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteOcclusionQueriesNV: procedure(n: GLsizei; const ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsOcclusionQueryNV: function(id: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBeginOcclusionQueryNV: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndOcclusionQueryNV: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetOcclusionQueryivNV: procedure(id: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetOcclusionQueryuivNV: procedure(id: GLuint; pname: GLenum; params: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_occlusion_query: Boolean;
+
+//***** GL_NV_packed_depth_stencil *****//
+const
+  GL_DEPTH_STENCIL_NV = $84F9;
+  GL_UNSIGNED_INT_24_8_NV = $84FA;
+
+function Load_GL_NV_packed_depth_stencil: Boolean;
+
+//***** GL_NV_point_sprite *****//
+const
+  GL_POINT_SPRITE_NV = $8861;
+  GL_COORD_REPLACE_NV = $8862;
+  GL_POINT_SPRITE_R_MODE_NV = $8863;
+var
+  glPointParameteriNV: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameterivNV: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_point_sprite: Boolean;
+
+//***** GL_NV_register_combiners *****//
+const
+  GL_REGISTER_COMBINERS_NV = $8522;
+  GL_COMBINER0_NV = $8550;
+  GL_COMBINER1_NV = $8551;
+  GL_COMBINER2_NV = $8552;
+  GL_COMBINER3_NV = $8553;
+  GL_COMBINER4_NV = $8554;
+  GL_COMBINER5_NV = $8555;
+  GL_COMBINER6_NV = $8556;
+  GL_COMBINER7_NV = $8557;
+  GL_VARIABLE_A_NV = $8523;
+  GL_VARIABLE_B_NV = $8524;
+  GL_VARIABLE_C_NV = $8525;
+  GL_VARIABLE_D_NV = $8526;
+  GL_VARIABLE_E_NV = $8527;
+  GL_VARIABLE_F_NV = $8528;
+  GL_VARIABLE_G_NV = $8529;
+  GL_CONSTANT_COLOR0_NV = $852A;
+  GL_CONSTANT_COLOR1_NV = $852B;
+  GL_PRIMARY_COLOR_NV = $852C;
+  GL_SECONDARY_COLOR_NV = $852D;
+  GL_SPARE0_NV = $852E;
+  GL_SPARE1_NV = $852F;
+  GL_UNSIGNED_IDENTITY_NV = $8536;
+  GL_UNSIGNED_INVERT_NV = $8537;
+  GL_EXPAND_NORMAL_NV = $8538;
+  GL_EXPAND_NEGATE_NV = $8539;
+  GL_HALF_BIAS_NORMAL_NV = $853A;
+  GL_HALF_BIAS_NEGATE_NV = $853B;
+  GL_SIGNED_IDENTITY_NV = $853C;
+  GL_SIGNED_NEGATE_NV = $853D;
+  GL_E_TIMES_F_NV = $8531;
+  GL_SPARE0_PLUS_SECONDARY_COLOR_NV = $8532;
+  GL_SCALE_BY_TWO_NV = $853E;
+  GL_SCALE_BY_FOUR_NV = $853F;
+  GL_SCALE_BY_ONE_HALF_NV = $8540;
+  GL_BIAS_BY_NEGATIVE_ONE_HALF_NV = $8541;
+  GL_DISCARD_NV = $8530;
+  GL_COMBINER_INPUT_NV = $8542;
+  GL_COMBINER_MAPPING_NV = $8543;
+  GL_COMBINER_COMPONENT_USAGE_NV = $8544;
+  GL_COMBINER_AB_DOT_PRODUCT_NV = $8545;
+  GL_COMBINER_CD_DOT_PRODUCT_NV = $8546;
+  GL_COMBINER_MUX_SUM_NV = $8547;
+  GL_COMBINER_SCALE_NV = $8548;
+  GL_COMBINER_BIAS_NV = $8549;
+  GL_COMBINER_AB_OUTPUT_NV = $854A;
+  GL_COMBINER_CD_OUTPUT_NV = $854B;
+  GL_COMBINER_SUM_OUTPUT_NV = $854C;
+  GL_NUM_GENERAL_COMBINERS_NV = $854E;
+  GL_COLOR_SUM_CLAMP_NV = $854F;
+  GL_MAX_GENERAL_COMBINERS_NV = $854D;
+var
+  glCombinerParameterfvNV: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCombinerParameterivNV: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCombinerParameterfNV: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCombinerParameteriNV: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCombinerInputNV: procedure(stage: GLenum; portion: GLenum; variable: GLenum; input: GLenum; mapping: GLenum; componentUsage: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCombinerOutputNV: procedure(stage: GLenum; portion: GLenum; abOutput: GLenum; cdOutput: GLenum; sumOutput: GLenum; scale: GLenum; bias: GLenum; abDotProduct: GLboolean; cdDotProduct: GLboolean; muxSum: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFinalCombinerInputNV: procedure(variable: GLenum; input: GLenum; mapping: GLenum; componentUsage: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCombinerInputParameterfvNV: procedure(stage: GLenum; portion: GLenum; variable: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCombinerInputParameterivNV: procedure(stage: GLenum; portion: GLenum; variable: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCombinerOutputParameterfvNV: procedure(stage: GLenum; portion: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCombinerOutputParameterivNV: procedure(stage: GLenum; portion: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFinalCombinerInputParameterfvNV: procedure(variable: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFinalCombinerInputParameterivNV: procedure(variable: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_register_combiners: Boolean;
+
+//***** GL_NV_register_combiners2 *****//
+const
+  GL_PER_STAGE_CONSTANTS_NV = $8535;
+var
+  glCombinerStageParameterfvNV: procedure(stage: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetCombinerStageParameterfvNV: procedure(stage: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_register_combiners2: Boolean;
+
+//***** GL_NV_texgen_emboss *****//
+const
+  GL_EMBOSS_MAP_NV = $855F;
+  GL_EMBOSS_LIGHT_NV = $855D;
+  GL_EMBOSS_CONSTANT_NV = $855E;
+
+function Load_GL_NV_texgen_emboss: Boolean;
+
+//***** GL_NV_texgen_reflection *****//
+const
+  GL_NORMAL_MAP_NV = $8511;
+  GL_REFLECTION_MAP_NV = $8512;
+
+function Load_GL_NV_texgen_reflection: Boolean;
+
+//***** GL_NV_texture_compression_vtc *****//
+  // GL_COMPRESSED_RGB_S3TC_DXT1_EXT  { already defined }
+  // GL_COMPRESSED_RGBA_S3TC_DXT1_EXT  { already defined }
+  // GL_COMPRESSED_RGBA_S3TC_DXT3_EXT  { already defined }
+  // GL_COMPRESSED_RGBA_S3TC_DXT5_EXT  { already defined }
+
+function Load_GL_NV_texture_compression_vtc: Boolean;
+
+//***** GL_NV_texture_env_combine4 *****//
+const
+  GL_COMBINE4_NV = $8503;
+  GL_SOURCE3_RGB_NV = $8583;
+  GL_SOURCE3_ALPHA_NV = $858B;
+  GL_OPERAND3_RGB_NV = $8593;
+  GL_OPERAND3_ALPHA_NV = $859B;
+
+function Load_GL_NV_texture_env_combine4: Boolean;
+
+//***** GL_NV_texture_rectangle *****//
+const
+  GL_TEXTURE_RECTANGLE_NV = $84F5;
+  GL_TEXTURE_BINDING_RECTANGLE_NV = $84F6;
+  GL_PROXY_TEXTURE_RECTANGLE_NV = $84F7;
+  GL_MAX_RECTANGLE_TEXTURE_SIZE_NV = $84F8;
+
+function Load_GL_NV_texture_rectangle: Boolean;
+
+//***** GL_NV_texture_shader *****//
+const
+  GL_TEXTURE_SHADER_NV = $86DE;
+  GL_RGBA_UNSIGNED_DOT_PRODUCT_MAPPING_NV = $86D9;
+  GL_SHADER_OPERATION_NV = $86DF;
+  GL_CULL_MODES_NV = $86E0;
+  GL_OFFSET_TEXTURE_MATRIX_NV = $86E1;
+  GL_OFFSET_TEXTURE_SCALE_NV = $86E2;
+  GL_OFFSET_TEXTURE_BIAS_NV = $86E3;
+  GL_PREVIOUS_TEXTURE_INPUT_NV = $86E4;
+  GL_CONST_EYE_NV = $86E5;
+  GL_SHADER_CONSISTENT_NV = $86DD;
+  GL_PASS_THROUGH_NV = $86E6;
+  GL_CULL_FRAGMENT_NV = $86E7;
+  GL_OFFSET_TEXTURE_2D_NV = $86E8;
+  GL_OFFSET_TEXTURE_RECTANGLE_NV = $864C;
+  GL_OFFSET_TEXTURE_RECTANGLE_SCALE_NV = $864D;
+  GL_DEPENDENT_AR_TEXTURE_2D_NV = $86E9;
+  GL_DEPENDENT_GB_TEXTURE_2D_NV = $86EA;
+  GL_DOT_PRODUCT_NV = $86EC;
+  GL_DOT_PRODUCT_DEPTH_REPLACE_NV = $86ED;
+  GL_DOT_PRODUCT_TEXTURE_2D_NV = $86EE;
+  GL_DOT_PRODUCT_TEXTURE_RECTANGLE_NV = $864E;
+  GL_DOT_PRODUCT_TEXTURE_CUBE_MAP_NV = $86F0;
+  GL_DOT_PRODUCT_DIFFUSE_CUBE_MAP_NV = $86F1;
+  GL_DOT_PRODUCT_REFLECT_CUBE_MAP_NV = $86F2;
+  GL_DOT_PRODUCT_CONST_EYE_REFLECT_CUBE_MAP_NV = $86F3;
+  GL_HILO_NV = $86F4;
+  GL_DSDT_NV = $86F5;
+  GL_DSDT_MAG_NV = $86F6;
+  GL_DSDT_MAG_VIB_NV = $86F7;
+  GL_UNSIGNED_INT_S8_S8_8_8_NV = $86DA;
+  GL_UNSIGNED_INT_8_8_S8_S8_REV_NV = $86DB;
+  GL_SIGNED_RGBA_NV = $86FB;
+  GL_SIGNED_RGBA8_NV = $86FC;
+  GL_SIGNED_RGB_NV = $86FE;
+  GL_SIGNED_RGB8_NV = $86FF;
+  GL_SIGNED_LUMINANCE_NV = $8701;
+  GL_SIGNED_LUMINANCE8_NV = $8702;
+  GL_SIGNED_LUMINANCE_ALPHA_NV = $8703;
+  GL_SIGNED_LUMINANCE8_ALPHA8_NV = $8704;
+  GL_SIGNED_ALPHA_NV = $8705;
+  GL_SIGNED_ALPHA8_NV = $8706;
+  GL_SIGNED_INTENSITY_NV = $8707;
+  GL_SIGNED_INTENSITY8_NV = $8708;
+  GL_SIGNED_RGB_UNSIGNED_ALPHA_NV = $870C;
+  GL_SIGNED_RGB8_UNSIGNED_ALPHA8_NV = $870D;
+  GL_HILO16_NV = $86F8;
+  GL_SIGNED_HILO_NV = $86F9;
+  GL_SIGNED_HILO16_NV = $86FA;
+  GL_DSDT8_NV = $8709;
+  GL_DSDT8_MAG8_NV = $870A;
+  GL_DSDT_MAG_INTENSITY_NV = $86DC;
+  GL_DSDT8_MAG8_INTENSITY8_NV = $870B;
+  GL_HI_SCALE_NV = $870E;
+  GL_LO_SCALE_NV = $870F;
+  GL_DS_SCALE_NV = $8710;
+  GL_DT_SCALE_NV = $8711;
+  GL_MAGNITUDE_SCALE_NV = $8712;
+  GL_VIBRANCE_SCALE_NV = $8713;
+  GL_HI_BIAS_NV = $8714;
+  GL_LO_BIAS_NV = $8715;
+  GL_DS_BIAS_NV = $8716;
+  GL_DT_BIAS_NV = $8717;
+  GL_MAGNITUDE_BIAS_NV = $8718;
+  GL_VIBRANCE_BIAS_NV = $8719;
+  GL_TEXTURE_BORDER_VALUES_NV = $871A;
+  GL_TEXTURE_HI_SIZE_NV = $871B;
+  GL_TEXTURE_LO_SIZE_NV = $871C;
+  GL_TEXTURE_DS_SIZE_NV = $871D;
+  GL_TEXTURE_DT_SIZE_NV = $871E;
+  GL_TEXTURE_MAG_SIZE_NV = $871F;
+
+function Load_GL_NV_texture_shader: Boolean;
+
+//***** GL_NV_texture_shader2 *****//
+const
+  GL_DOT_PRODUCT_TEXTURE_3D_NV = $86EF;
+  // GL_HILO_NV  { already defined }
+  // GL_DSDT_NV  { already defined }
+  // GL_DSDT_MAG_NV  { already defined }
+  // GL_DSDT_MAG_VIB_NV  { already defined }
+  // GL_UNSIGNED_INT_S8_S8_8_8_NV  { already defined }
+  // GL_UNSIGNED_INT_8_8_S8_S8_REV_NV  { already defined }
+  // GL_SIGNED_RGBA_NV  { already defined }
+  // GL_SIGNED_RGBA8_NV  { already defined }
+  // GL_SIGNED_RGB_NV  { already defined }
+  // GL_SIGNED_RGB8_NV  { already defined }
+  // GL_SIGNED_LUMINANCE_NV  { already defined }
+  // GL_SIGNED_LUMINANCE8_NV  { already defined }
+  // GL_SIGNED_LUMINANCE_ALPHA_NV  { already defined }
+  // GL_SIGNED_LUMINANCE8_ALPHA8_NV  { already defined }
+  // GL_SIGNED_ALPHA_NV  { already defined }
+  // GL_SIGNED_ALPHA8_NV  { already defined }
+  // GL_SIGNED_INTENSITY_NV  { already defined }
+  // GL_SIGNED_INTENSITY8_NV  { already defined }
+  // GL_SIGNED_RGB_UNSIGNED_ALPHA_NV  { already defined }
+  // GL_SIGNED_RGB8_UNSIGNED_ALPHA8_NV  { already defined }
+  // GL_HILO16_NV  { already defined }
+  // GL_SIGNED_HILO_NV  { already defined }
+  // GL_SIGNED_HILO16_NV  { already defined }
+  // GL_DSDT8_NV  { already defined }
+  // GL_DSDT8_MAG8_NV  { already defined }
+  // GL_DSDT_MAG_INTENSITY_NV  { already defined }
+  // GL_DSDT8_MAG8_INTENSITY8_NV  { already defined }
+
+function Load_GL_NV_texture_shader2: Boolean;
+
+//***** GL_NV_texture_shader3 *****//
+const
+  GL_OFFSET_PROJECTIVE_TEXTURE_2D_NV = $8850;
+  GL_OFFSET_PROJECTIVE_TEXTURE_2D_SCALE_NV = $8851;
+  GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_NV = $8852;
+  GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_SCALE_NV = $8853;
+  GL_OFFSET_HILO_TEXTURE_2D_NV = $8854;
+  GL_OFFSET_HILO_TEXTURE_RECTANGLE_NV = $8855;
+  GL_OFFSET_HILO_PROJECTIVE_TEXTURE_2D_NV = $8856;
+  GL_OFFSET_HILO_PROJECTIVE_TEXTURE_RECTANGLE_NV = $8857;
+  GL_DEPENDENT_HILO_TEXTURE_2D_NV = $8858;
+  GL_DEPENDENT_RGB_TEXTURE_3D_NV = $8859;
+  GL_DEPENDENT_RGB_TEXTURE_CUBE_MAP_NV = $885A;
+  GL_DOT_PRODUCT_PASS_THROUGH_NV = $885B;
+  GL_DOT_PRODUCT_TEXTURE_1D_NV = $885C;
+  GL_DOT_PRODUCT_AFFINE_DEPTH_REPLACE_NV = $885D;
+  GL_HILO8_NV = $885E;
+  GL_SIGNED_HILO8_NV = $885F;
+  GL_FORCE_BLUE_TO_ONE_NV = $8860;
+
+function Load_GL_NV_texture_shader3: Boolean;
+
+//***** GL_NV_vertex_array_range *****//
+const
+  GL_VERTEX_ARRAY_RANGE_NV = $851D;
+  GL_VERTEX_ARRAY_RANGE_LENGTH_NV = $851E;
+  GL_VERTEX_ARRAY_RANGE_VALID_NV = $851F;
+  GL_MAX_VERTEX_ARRAY_RANGE_ELEMENT_NV = $8520;
+  GL_VERTEX_ARRAY_RANGE_POINTER_NV = $8521;
+var
+  glVertexArrayRangeNV: procedure(length: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFlushVertexArrayRangeNV: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+{$IFDEF WINDOWS}
+  wglAllocateMemoryNV: function(size: GLsizei; readFrequency: GLfloat; writeFrequency: GLfloat; priority: GLfloat): PGLvoid; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglFreeMemoryNV: procedure(pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+{$ENDIF}
+
+function Load_GL_NV_vertex_array_range: Boolean;
+
+//***** GL_NV_vertex_array_range2 *****//
+const
+  GL_VERTEX_ARRAY_RANGE_WITHOUT_FLUSH_NV = $8533;
+
+function Load_GL_NV_vertex_array_range2: Boolean;
+
+//***** GL_NV_vertex_program *****//
+const
+  GL_VERTEX_PROGRAM_NV = $8620;
+  GL_VERTEX_PROGRAM_POINT_SIZE_NV = $8642;
+  GL_VERTEX_PROGRAM_TWO_SIDE_NV = $8643;
+  GL_VERTEX_STATE_PROGRAM_NV = $8621;
+  GL_ATTRIB_ARRAY_SIZE_NV = $8623;
+  GL_ATTRIB_ARRAY_STRIDE_NV = $8624;
+  GL_ATTRIB_ARRAY_TYPE_NV = $8625;
+  GL_CURRENT_ATTRIB_NV = $8626;
+  GL_PROGRAM_PARAMETER_NV = $8644;
+  GL_ATTRIB_ARRAY_POINTER_NV = $8645;
+  GL_PROGRAM_TARGET_NV = $8646;
+  GL_PROGRAM_LENGTH_NV = $8627;
+  GL_PROGRAM_RESIDENT_NV = $8647;
+  GL_PROGRAM_STRING_NV = $8628;
+  GL_TRACK_MATRIX_NV = $8648;
+  GL_TRACK_MATRIX_TRANSFORM_NV = $8649;
+  GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV = $862E;
+  GL_MAX_TRACK_MATRICES_NV = $862F;
+  GL_CURRENT_MATRIX_STACK_DEPTH_NV = $8640;
+  GL_CURRENT_MATRIX_NV = $8641;
+  GL_VERTEX_PROGRAM_BINDING_NV = $864A;
+  GL_PROGRAM_ERROR_POSITION_NV = $864B;
+  GL_MODELVIEW_PROJECTION_NV = $8629;
+  GL_MATRIX0_NV = $8630;
+  GL_MATRIX1_NV = $8631;
+  GL_MATRIX2_NV = $8632;
+  GL_MATRIX3_NV = $8633;
+  GL_MATRIX4_NV = $8634;
+  GL_MATRIX5_NV = $8635;
+  GL_MATRIX6_NV = $8636;
+  GL_MATRIX7_NV = $8637;
+  GL_IDENTITY_NV = $862A;
+  GL_INVERSE_NV = $862B;
+  GL_TRANSPOSE_NV = $862C;
+  GL_INVERSE_TRANSPOSE_NV = $862D;
+  GL_VERTEX_ATTRIB_ARRAY0_NV = $8650;
+  GL_VERTEX_ATTRIB_ARRAY1_NV = $8651;
+  GL_VERTEX_ATTRIB_ARRAY2_NV = $8652;
+  GL_VERTEX_ATTRIB_ARRAY3_NV = $8653;
+  GL_VERTEX_ATTRIB_ARRAY4_NV = $8654;
+  GL_VERTEX_ATTRIB_ARRAY5_NV = $8655;
+  GL_VERTEX_ATTRIB_ARRAY6_NV = $8656;
+  GL_VERTEX_ATTRIB_ARRAY7_NV = $8657;
+  GL_VERTEX_ATTRIB_ARRAY8_NV = $8658;
+  GL_VERTEX_ATTRIB_ARRAY9_NV = $8659;
+  GL_VERTEX_ATTRIB_ARRAY10_NV = $865A;
+  GL_VERTEX_ATTRIB_ARRAY11_NV = $865B;
+  GL_VERTEX_ATTRIB_ARRAY12_NV = $865C;
+  GL_VERTEX_ATTRIB_ARRAY13_NV = $865D;
+  GL_VERTEX_ATTRIB_ARRAY14_NV = $865E;
+  GL_VERTEX_ATTRIB_ARRAY15_NV = $865F;
+  GL_MAP1_VERTEX_ATTRIB0_4_NV = $8660;
+  GL_MAP1_VERTEX_ATTRIB1_4_NV = $8661;
+  GL_MAP1_VERTEX_ATTRIB2_4_NV = $8662;
+  GL_MAP1_VERTEX_ATTRIB3_4_NV = $8663;
+  GL_MAP1_VERTEX_ATTRIB4_4_NV = $8664;
+  GL_MAP1_VERTEX_ATTRIB5_4_NV = $8665;
+  GL_MAP1_VERTEX_ATTRIB6_4_NV = $8666;
+  GL_MAP1_VERTEX_ATTRIB7_4_NV = $8667;
+  GL_MAP1_VERTEX_ATTRIB8_4_NV = $8668;
+  GL_MAP1_VERTEX_ATTRIB9_4_NV = $8669;
+  GL_MAP1_VERTEX_ATTRIB10_4_NV = $866A;
+  GL_MAP1_VERTEX_ATTRIB11_4_NV = $866B;
+  GL_MAP1_VERTEX_ATTRIB12_4_NV = $866C;
+  GL_MAP1_VERTEX_ATTRIB13_4_NV = $866D;
+  GL_MAP1_VERTEX_ATTRIB14_4_NV = $866E;
+  GL_MAP1_VERTEX_ATTRIB15_4_NV = $866F;
+  GL_MAP2_VERTEX_ATTRIB0_4_NV = $8670;
+  GL_MAP2_VERTEX_ATTRIB1_4_NV = $8671;
+  GL_MAP2_VERTEX_ATTRIB2_4_NV = $8672;
+  GL_MAP2_VERTEX_ATTRIB3_4_NV = $8673;
+  GL_MAP2_VERTEX_ATTRIB4_4_NV = $8674;
+  GL_MAP2_VERTEX_ATTRIB5_4_NV = $8675;
+  GL_MAP2_VERTEX_ATTRIB6_4_NV = $8676;
+  GL_MAP2_VERTEX_ATTRIB7_4_NV = $8677;
+  GL_MAP2_VERTEX_ATTRIB8_4_NV = $8678;
+  GL_MAP2_VERTEX_ATTRIB9_4_NV = $8679;
+  GL_MAP2_VERTEX_ATTRIB10_4_NV = $867A;
+  GL_MAP2_VERTEX_ATTRIB11_4_NV = $867B;
+  GL_MAP2_VERTEX_ATTRIB12_4_NV = $867C;
+  GL_MAP2_VERTEX_ATTRIB13_4_NV = $867D;
+  GL_MAP2_VERTEX_ATTRIB14_4_NV = $867E;
+  GL_MAP2_VERTEX_ATTRIB15_4_NV = $867F;
+var
+  glBindProgramNV: procedure(target: GLenum; id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteProgramsNV: procedure(n: GLsizei; const ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glExecuteProgramNV: procedure(target: GLenum; id: GLuint; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenProgramsNV: procedure(n: GLsizei; ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAreProgramsResidentNV: function(n: GLsizei; const ids: PGLuint; residences: PGLboolean): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRequestResidentProgramsNV: procedure(n: GLsizei; ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramParameterfvNV: procedure(target: GLenum; index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramParameterdvNV: procedure(target: GLenum; index: GLuint; pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramivNV: procedure(id: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramStringNV: procedure(id: GLuint; pname: GLenum; _program: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTrackMatrixivNV: procedure(target: GLenum; address: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribdvNV: procedure(index: GLuint; pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribfvNV: procedure(index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribivNV: procedure(index: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribPointervNV: procedure(index: GLuint; pname: GLenum; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsProgramNV: function(id: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadProgramNV: procedure(target: GLenum; id: GLuint; len: GLsizei; const _program: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramParameter4fNV: procedure(target: GLenum; index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramParameter4fvNV: procedure(target: GLenum; index: GLuint; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramParameters4dvNV: procedure(target: GLenum; index: GLuint; num: GLuint; const params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramParameters4fvNV: procedure(target: GLenum; index: GLuint; num: GLuint; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTrackMatrixNV: procedure(target: GLenum; address: GLuint; matrix: GLenum; transform: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribPointerNV: procedure(index: GLuint; size: GLint; _type: GLenum; stride: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1sNV: procedure(index: GLuint; x: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1fNV: procedure(index: GLuint; x: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1dNV: procedure(index: GLuint; x: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2sNV: procedure(index: GLuint; x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2fNV: procedure(index: GLuint; x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2dNV: procedure(index: GLuint; x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3sNV: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3fNV: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3dNV: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4sNV: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort; w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4fNV: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4dNV: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4ubNV: procedure(index: GLuint; x: GLubyte; y: GLubyte; z: GLubyte; w: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1svNV: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1fvNV: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1dvNV: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2svNV: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2fvNV: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2dvNV: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3svNV: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3fvNV: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3dvNV: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4svNV: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4fvNV: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4dvNV: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4ubvNV: procedure(index: GLuint; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs1svNV: procedure(index: GLuint; n: GLsizei; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs1fvNV: procedure(index: GLuint; n: GLsizei; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs1dvNV: procedure(index: GLuint; n: GLsizei; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs2svNV: procedure(index: GLuint; n: GLsizei; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs2fvNV: procedure(index: GLuint; n: GLsizei; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs2dvNV: procedure(index: GLuint; n: GLsizei; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs3svNV: procedure(index: GLuint; n: GLsizei; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs3fvNV: procedure(index: GLuint; n: GLsizei; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs3dvNV: procedure(index: GLuint; n: GLsizei; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs4svNV: procedure(index: GLuint; n: GLsizei; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs4fvNV: procedure(index: GLuint; n: GLsizei; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs4dvNV: procedure(index: GLuint; n: GLsizei; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs4ubvNV: procedure(index: GLuint; n: GLsizei; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_vertex_program: Boolean;
+
+//***** GL_NV_vertex_program1_1 *****//
+
+function Load_GL_NV_vertex_program1_1: Boolean;
+
+//***** GL_ATI_element_array *****//
+const
+  GL_ELEMENT_ARRAY_ATI = $8768;
+  GL_ELEMENT_ARRAY_TYPE_ATI = $8769;
+  GL_ELEMENT_ARRAY_POINTER_ATI = $876A;
+var
+  glElementPointerATI: procedure(_type: GLenum; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawElementArrayATI: procedure(mode: GLenum; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawRangeElementArrayATI: procedure(mode: GLenum; start: GLuint; _end: GLuint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_element_array: Boolean;
+
+//***** GL_ATI_envmap_bumpmap *****//
+const
+  GL_BUMP_ROT_MATRIX_ATI = $8775;
+  GL_BUMP_ROT_MATRIX_SIZE_ATI = $8776;
+  GL_BUMP_NUM_TEX_UNITS_ATI = $8777;
+  GL_BUMP_TEX_UNITS_ATI = $8778;
+  GL_DUDV_ATI = $8779;
+  GL_DU8DV8_ATI = $877A;
+  GL_BUMP_ENVMAP_ATI = $877B;
+  GL_BUMP_TARGET_ATI = $877C;
+var
+  glTexBumpParameterivATI: procedure(pname: GLenum; param: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexBumpParameterfvATI: procedure(pname: GLenum; param: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexBumpParameterivATI: procedure(pname: GLenum; param: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexBumpParameterfvATI: procedure(pname: GLenum; param: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_envmap_bumpmap: Boolean;
+
+//***** GL_ATI_fragment_shader *****//
+const
+  GL_FRAGMENT_SHADER_ATI = $8920;
+  GL_REG_0_ATI = $8921;
+  GL_REG_1_ATI = $8922;
+  GL_REG_2_ATI = $8923;
+  GL_REG_3_ATI = $8924;
+  GL_REG_4_ATI = $8925;
+  GL_REG_5_ATI = $8926;
+  GL_CON_0_ATI = $8941;
+  GL_CON_1_ATI = $8942;
+  GL_CON_2_ATI = $8943;
+  GL_CON_3_ATI = $8944;
+  GL_CON_4_ATI = $8945;
+  GL_CON_5_ATI = $8946;
+  GL_CON_6_ATI = $8947;
+  GL_CON_7_ATI = $8948;
+  GL_MOV_ATI = $8961;
+  GL_ADD_ATI = $8963;
+  GL_MUL_ATI = $8964;
+  GL_SUB_ATI = $8965;
+  GL_DOT3_ATI = $8966;
+  GL_DOT4_ATI = $8967;
+  GL_MAD_ATI = $8968;
+  GL_LERP_ATI = $8969;
+  GL_CND_ATI = $896A;
+  GL_CND0_ATI = $896B;
+  GL_DOT2_ADD_ATI = $896C;
+  GL_SECONDARY_INTERPOLATOR_ATI = $896D;
+  GL_SWIZZLE_STR_ATI = $8976;
+  GL_SWIZZLE_STQ_ATI = $8977;
+  GL_SWIZZLE_STR_DR_ATI = $8978;
+  GL_SWIZZLE_STQ_DQ_ATI = $8979;
+  GL_RED_BIT_ATI = $0001;
+  GL_GREEN_BIT_ATI = $0002;
+  GL_BLUE_BIT_ATI = $0004;
+  GL_2X_BIT_ATI = $0001;
+  GL_4X_BIT_ATI = $0002;
+  GL_8X_BIT_ATI = $0004;
+  GL_HALF_BIT_ATI = $0008;
+  GL_QUARTER_BIT_ATI = $0010;
+  GL_EIGHTH_BIT_ATI = $0020;
+  GL_SATURATE_BIT_ATI = $0040;
+  // GL_2X_BIT_ATI  { already defined }
+  GL_COMP_BIT_ATI = $0002;
+  GL_NEGATE_BIT_ATI = $0004;
+  GL_BIAS_BIT_ATI = $0008;
+var
+  glGenFragmentShadersATI: function(range: GLuint): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindFragmentShaderATI: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteFragmentShaderATI: procedure(id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBeginFragmentShaderATI: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndFragmentShaderATI: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPassTexCoordATI: procedure(dst: GLuint; coord: GLuint; swizzle: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSampleMapATI: procedure(dst: GLuint; interp: GLuint; swizzle: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorFragmentOp1ATI: procedure(op: GLenum; dst: GLuint; dstMask: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorFragmentOp2ATI: procedure(op: GLenum; dst: GLuint; dstMask: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint; arg2: GLuint; arg2Rep: GLuint; arg2Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorFragmentOp3ATI: procedure(op: GLenum; dst: GLuint; dstMask: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint; arg2: GLuint; arg2Rep: GLuint; arg2Mod: GLuint; arg3: GLuint; arg3Rep: GLuint; arg3Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAlphaFragmentOp1ATI: procedure(op: GLenum; dst: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAlphaFragmentOp2ATI: procedure(op: GLenum; dst: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint; arg2: GLuint; arg2Rep: GLuint; arg2Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAlphaFragmentOp3ATI: procedure(op: GLenum; dst: GLuint; dstMod: GLuint; arg1: GLuint; arg1Rep: GLuint; arg1Mod: GLuint; arg2: GLuint; arg2Rep: GLuint; arg2Mod: GLuint; arg3: GLuint; arg3Rep: GLuint; arg3Mod: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSetFragmentShaderConstantATI: procedure(dst: GLuint; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_fragment_shader: Boolean;
+
+//***** GL_ATI_pn_triangles *****//
+const
+  GL_PN_TRIANGLES_ATI = $87F0;
+  GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI = $87F1;
+  GL_PN_TRIANGLES_POINT_MODE_ATI = $87F2;
+  GL_PN_TRIANGLES_NORMAL_MODE_ATI = $87F3;
+  GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI = $87F4;
+  GL_PN_TRIANGLES_POINT_MODE_LINEAR_ATI = $87F5;
+  GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI = $87F6;
+  GL_PN_TRIANGLES_NORMAL_MODE_LINEAR_ATI = $87F7;
+  GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI = $87F8;
+var
+  glPNTrianglesiATI: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPNTrianglesfATI: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_pn_triangles: Boolean;
+
+//***** GL_ATI_texture_mirror_once *****//
+const
+  GL_MIRROR_CLAMP_ATI = $8742;
+  GL_MIRROR_CLAMP_TO_EDGE_ATI = $8743;
+
+function Load_GL_ATI_texture_mirror_once: Boolean;
+
+//***** GL_ATI_vertex_array_object *****//
+const
+  GL_STATIC_ATI = $8760;
+  GL_DYNAMIC_ATI = $8761;
+  GL_PRESERVE_ATI = $8762;
+  GL_DISCARD_ATI = $8763;
+  GL_OBJECT_BUFFER_SIZE_ATI = $8764;
+  GL_OBJECT_BUFFER_USAGE_ATI = $8765;
+  GL_ARRAY_OBJECT_BUFFER_ATI = $8766;
+  GL_ARRAY_OBJECT_OFFSET_ATI = $8767;
+var
+  glNewObjectBufferATI: function(size: GLsizei; const pointer: PGLvoid; usage: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsObjectBufferATI: function(buffer: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUpdateObjectBufferATI: procedure(buffer: GLuint; offset: GLuint; size: GLsizei; const pointer: PGLvoid; preserve: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetObjectBufferfvATI: procedure(buffer: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetObjectBufferivATI: procedure(buffer: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteObjectBufferATI: procedure(buffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glArrayObjectATI: procedure(_array: GLenum; size: GLint; _type: GLenum; stride: GLsizei; buffer: GLuint; offset: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetArrayObjectfvATI: procedure(_array: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetArrayObjectivATI: procedure(_array: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVariantArrayObjectATI: procedure(id: GLuint; _type: GLenum; stride: GLsizei; buffer: GLuint; offset: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantArrayObjectfvATI: procedure(id: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVariantArrayObjectivATI: procedure(id: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_vertex_array_object: Boolean;
+
+//***** GL_ATI_vertex_streams *****//
+const
+  GL_MAX_VERTEX_STREAMS_ATI = $876B;
+  GL_VERTEX_STREAM0_ATI = $876C;
+  GL_VERTEX_STREAM1_ATI = $876D;
+  GL_VERTEX_STREAM2_ATI = $876E;
+  GL_VERTEX_STREAM3_ATI = $876F;
+  GL_VERTEX_STREAM4_ATI = $8770;
+  GL_VERTEX_STREAM5_ATI = $8771;
+  GL_VERTEX_STREAM6_ATI = $8772;
+  GL_VERTEX_STREAM7_ATI = $8773;
+  GL_VERTEX_SOURCE_ATI = $8774;
+var
+  glVertexStream1s: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1i: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1f: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1d: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1sv: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1iv: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1fv: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream1dv: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2s: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2i: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2f: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2d: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2sv: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2iv: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2fv: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream2dv: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3s: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3i: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3f: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3d: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3sv: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3iv: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3fv: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream3dv: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4s: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4i: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4f: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4d: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4sv: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4iv: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4fv: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexStream4dv: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3b: procedure(stream: GLenum; coords: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3s: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3i: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3f: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3d: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3bv: procedure(stream: GLenum; coords: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3sv: procedure(stream: GLenum; coords: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3iv: procedure(stream: GLenum; coords: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3fv: procedure(stream: GLenum; coords: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalStream3dv: procedure(stream: GLenum; coords: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClientActiveVertexStream: procedure(stream: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexBlendEnvi: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexBlendEnvf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_vertex_streams: Boolean;
+
+{$IFDEF WINDOWS}
+//***** WGL_I3D_image_buffer *****//
+const
+  WGL_IMAGE_BUFFER_MIN_ACCESS_I3D = $0001;
+  WGL_IMAGE_BUFFER_LOCK_I3D = $0002;
+var
+  wglCreateImageBufferI3D: function(hDC: HDC; dwSize: DWORD; uFlags: UINT): PGLvoid; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDestroyImageBufferI3D: function(hDC: HDC; pAddress: PGLvoid): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglAssociateImageBufferEventsI3D: function(hdc: HDC; pEvent: PHandle; pAddress: PGLvoid; pSize: PDWORD; count: UINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglReleaseImageBufferEventsI3D: function(hdc: HDC; pAddress: PGLvoid; count: UINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_image_buffer: Boolean;
+
+//***** WGL_I3D_swap_frame_lock *****//
+var
+  wglEnableFrameLockI3D: function(): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDisableFrameLockI3D: function(): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglIsEnabledFrameLockI3D: function(pFlag: PBOOL): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglQueryFrameLockMasterI3D: function(pFlag: PBOOL): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_swap_frame_lock: Boolean;
+
+//***** WGL_I3D_swap_frame_usage *****//
+var
+  wglGetFrameUsageI3D: function(pUsage: PGLfloat): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglBeginFrameTrackingI3D: function(): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglEndFrameTrackingI3D: function(): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglQueryFrameTrackingI3D: function(pFrameCount: PDWORD; pMissedFrames: PDWORD; pLastMissedUsage: PGLfloat): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_swap_frame_usage: Boolean;
+{$ENDIF}
+
+//***** GL_3DFX_texture_compression_FXT1 *****//
+const
+  GL_COMPRESSED_RGB_FXT1_3DFX = $86B0;
+  GL_COMPRESSED_RGBA_FXT1_3DFX = $86B1;
+
+function Load_GL_3DFX_texture_compression_FXT1: Boolean;
+
+//***** GL_IBM_cull_vertex *****//
+const
+  GL_CULL_VERTEX_IBM = $1928A;
+
+function Load_GL_IBM_cull_vertex: Boolean;
+
+//***** GL_IBM_multimode_draw_arrays *****//
+var
+  glMultiModeDrawArraysIBM: procedure(mode: PGLenum; first: PGLint; count: PGLsizei; primcount: GLsizei; modestride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiModeDrawElementsIBM: procedure(mode: PGLenum; count: PGLsizei; _type: GLenum; const indices: PGLvoid; primcount: GLsizei; modestride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_IBM_multimode_draw_arrays: Boolean;
+
+//***** GL_IBM_raster_pos_clip *****//
+const
+  GL_RASTER_POSITION_UNCLIPPED_IBM = $19262;
+
+function Load_GL_IBM_raster_pos_clip: Boolean;
+
+//***** GL_IBM_texture_mirrored_repeat *****//
+const
+  GL_MIRRORED_REPEAT_IBM = $8370;
+
+function Load_GL_IBM_texture_mirrored_repeat: Boolean;
+
+//***** GL_IBM_vertex_array_lists *****//
+const
+  GL_VERTEX_ARRAY_LIST_IBM = $1929E;
+  GL_NORMAL_ARRAY_LIST_IBM = $1929F;
+  GL_COLOR_ARRAY_LIST_IBM = $192A0;
+  GL_INDEX_ARRAY_LIST_IBM = $192A1;
+  GL_TEXTURE_COORD_ARRAY_LIST_IBM = $192A2;
+  GL_EDGE_FLAG_ARRAY_LIST_IBM = $192A3;
+  GL_FOG_COORDINATE_ARRAY_LIST_IBM = $192A4;
+  GL_SECONDARY_COLOR_ARRAY_LIST_IBM = $192A5;
+  GL_VERTEX_ARRAY_LIST_STRIDE_IBM = $192A8;
+  GL_NORMAL_ARRAY_LIST_STRIDE_IBM = $192A9;
+  GL_COLOR_ARRAY_LIST_STRIDE_IBM = $192AA;
+  GL_INDEX_ARRAY_LIST_STRIDE_IBM = $192AB;
+  GL_TEXTURE_COORD_ARRAY_LIST_STRIDE_IBM = $192AC;
+  GL_EDGE_FLAG_ARRAY_LIST_STRIDE_IBM = $192AD;
+  GL_FOG_COORDINATE_ARRAY_LIST_STRIDE_IBM = $192AE;
+  GL_SECONDARY_COLOR_ARRAY_LIST_STRIDE_IBM = $192AF;
+var
+  glColorPointerListIBM: procedure(size: GLint; _type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColorPointerListIBM: procedure(size: GLint; _type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagPointerListIBM: procedure(stride: GLint; const pointer: PGLboolean; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordPointerListIBM: procedure(_type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalPointerListIBM: procedure(_type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoordPointerListIBM: procedure(size: GLint; _type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexPointerListIBM: procedure(size: GLint; _type: GLenum; stride: GLint; const pointer: PGLvoid; ptrstride: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_IBM_vertex_array_lists: Boolean;
+
+//***** GL_MESA_resize_buffers *****//
+var
+  glResizeBuffersMESA: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_MESA_resize_buffers: Boolean;
+
+//***** GL_MESA_window_pos *****//
+var
+  glWindowPos2dMESA: procedure(x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2fMESA: procedure(x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2iMESA: procedure(x: GLint; y: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2sMESA: procedure(x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2ivMESA: procedure(const p: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2svMESA: procedure(const p: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2fvMESA: procedure(const p: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2dvMESA: procedure(const p: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3iMESA: procedure(x: GLint; y: GLint; z: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3sMESA: procedure(x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3fMESA: procedure(x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3dMESA: procedure(x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3ivMESA: procedure(const p: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3svMESA: procedure(const p: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3fvMESA: procedure(const p: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3dvMESA: procedure(const p: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4iMESA: procedure(x: GLint; y: GLint; z: GLint; w: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4sMESA: procedure(x: GLshort; y: GLshort; z: GLshort; w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4fMESA: procedure(x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4dMESA: procedure(x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4ivMESA: procedure(const p: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4svMESA: procedure(const p: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4fvMESA: procedure(const p: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos4dvMESA: procedure(const p: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_MESA_window_pos: Boolean;
+
+//***** GL_OML_interlace *****//
+const
+  GL_INTERLACE_OML = $8980;
+  GL_INTERLACE_READ_OML = $8981;
+
+function Load_GL_OML_interlace: Boolean;
+
+//***** GL_OML_resample *****//
+const
+  GL_PACK_RESAMPLE_OML = $8984;
+  GL_UNPACK_RESAMPLE_OML = $8985;
+  GL_RESAMPLE_REPLICATE_OML = $8986;
+  GL_RESAMPLE_ZERO_FILL_OML = $8987;
+  GL_RESAMPLE_AVERAGE_OML = $8988;
+  GL_RESAMPLE_DECIMATE_OML = $8989;
+  // GL_RESAMPLE_AVERAGE_OML  { already defined }
+
+function Load_GL_OML_resample: Boolean;
+
+//***** GL_OML_subsample *****//
+const
+  GL_FORMAT_SUBSAMPLE_24_24_OML = $8982;
+  GL_FORMAT_SUBSAMPLE_244_244_OML = $8983;
+
+function Load_GL_OML_subsample: Boolean;
+
+//***** GL_SGIS_generate_mipmap *****//
+const
+  GL_GENERATE_MIPMAP_SGIS = $8191;
+  GL_GENERATE_MIPMAP_HINT_SGIS = $8192;
+
+function Load_GL_SGIS_generate_mipmap: Boolean;
+
+//***** GL_SGIS_multisample *****//
+const
+  GLX_SAMPLE_BUFFERS_SGIS = $186A0;
+  GLX_SAMPLES_SGIS = $186A1;
+  GL_MULTISAMPLE_SGIS = $809D;
+  GL_SAMPLE_ALPHA_TO_MASK_SGIS = $809E;
+  GL_SAMPLE_ALPHA_TO_ONE_SGIS = $809F;
+  GL_SAMPLE_MASK_SGIS = $80A0;
+  GL_MULTISAMPLE_BIT_EXT = $20000000;
+  GL_1PASS_SGIS = $80A1;
+  GL_2PASS_0_SGIS = $80A2;
+  GL_2PASS_1_SGIS = $80A3;
+  GL_4PASS_0_SGIS = $80A4;
+  GL_4PASS_1_SGIS = $80A5;
+  GL_4PASS_2_SGIS = $80A6;
+  GL_4PASS_3_SGIS = $80A7;
+  GL_SAMPLE_BUFFERS_SGIS = $80A8;
+  GL_SAMPLES_SGIS = $80A9;
+  GL_SAMPLE_MASK_VALUE_SGIS = $80AA;
+  GL_SAMPLE_MASK_INVERT_SGIS = $80AB;
+  GL_SAMPLE_PATTERN_SGIS = $80AC;
+var
+  glSampleMaskSGIS: procedure(value: GLclampf; invert: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSamplePatternSGIS: procedure(pattern: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_SGIS_multisample: Boolean;
+
+//***** GL_SGIS_pixel_texture *****//
+const
+  GL_PIXEL_TEXTURE_SGIS = $8353;
+  GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS = $8354;
+  GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS = $8355;
+  GL_PIXEL_GROUP_COLOR_SGIS = $8356;
+var
+  glPixelTexGenParameteriSGIS: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelTexGenParameterfSGIS: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelTexGenParameterivSGIS: procedure(pname: GLenum; params: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelTexGenParameterfvSGIS: procedure(pname: GLenum; params: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_SGIS_pixel_texture: Boolean;
+
+//***** GL_SGIS_texture_border_clamp *****//
+  // GL_CLAMP_TO_BORDER_SGIS  { already defined }
+
+function Load_GL_SGIS_texture_border_clamp: Boolean;
+
+//***** GL_SGIS_texture_color_mask *****//
+const
+  GL_TEXTURE_COLOR_WRITEMASK_SGIS = $81EF;
+var
+  glTextureColorMaskSGIS: procedure(r: GLboolean; g: GLboolean; b: GLboolean; a: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_SGIS_texture_color_mask: Boolean;
+
+//***** GL_SGIS_texture_edge_clamp *****//
+const
+  GL_CLAMP_TO_EDGE_SGIS = $812F;
+
+function Load_GL_SGIS_texture_edge_clamp: Boolean;
+
+//***** GL_SGIS_texture_lod *****//
+const
+  GL_TEXTURE_MIN_LOD_SGIS = $813A;
+  GL_TEXTURE_MAX_LOD_SGIS = $813B;
+  GL_TEXTURE_BASE_LEVEL_SGIS = $813C;
+  GL_TEXTURE_MAX_LEVEL_SGIS = $813D;
+
+function Load_GL_SGIS_texture_lod: Boolean;
+
+//***** GL_SGIS_depth_texture *****//
+const
+  GL_DEPTH_COMPONENT16_SGIX = $81A5;
+  GL_DEPTH_COMPONENT24_SGIX = $81A6;
+  GL_DEPTH_COMPONENT32_SGIX = $81A7;
+
+function Load_GL_SGIS_depth_texture: Boolean;
+
+//***** GL_SGIX_fog_offset *****//
+const
+  GL_FOG_OFFSET_SGIX = $8198;
+  GL_FOG_OFFSET_VALUE_SGIX = $8199;
+
+function Load_GL_SGIX_fog_offset: Boolean;
+
+//***** GL_SGIX_interlace *****//
+const
+  GL_INTERLACE_SGIX = $8094;
+
+function Load_GL_SGIX_interlace: Boolean;
+
+//***** GL_SGIX_shadow_ambient *****//
+const
+  GL_SHADOW_AMBIENT_SGIX = $80BF;
+
+function Load_GL_SGIX_shadow_ambient: Boolean;
+
+//***** GL_SGI_color_matrix *****//
+const
+  GL_COLOR_MATRIX_SGI = $80B1;
+  GL_COLOR_MATRIX_STACK_DEPTH_SGI = $80B2;
+  GL_MAX_COLOR_MATRIX_STACK_DEPTH_SGI = $80B3;
+  GL_POST_COLOR_MATRIX_RED_SCALE_SGI = $80B4;
+  GL_POST_COLOR_MATRIX_GREEN_SCALE_SGI = $80B5;
+  GL_POST_COLOR_MATRIX_BLUE_SCALE_SGI = $80B6;
+  GL_POST_COLOR_MATRIX_ALPHA_SCALE_SGI = $80B7;
+  GL_POST_COLOR_MATRIX_RED_BIAS_SGI = $80B8;
+  GL_POST_COLOR_MATRIX_GREEN_BIAS_SGI = $80B9;
+  GL_POST_COLOR_MATRIX_BLUE_BIAS_SGI = $80BA;
+  GL_POST_COLOR_MATRIX_ALPHA_BIAS_SGI = $80BB;
+
+function Load_GL_SGI_color_matrix: Boolean;
+
+//***** GL_SGI_color_table *****//
+const
+  GL_COLOR_TABLE_SGI = $80D0;
+  GL_POST_CONVOLUTION_COLOR_TABLE_SGI = $80D1;
+  GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI = $80D2;
+  GL_PROXY_COLOR_TABLE_SGI = $80D3;
+  GL_PROXY_POST_CONVOLUTION_COLOR_TABLE_SGI = $80D4;
+  GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE_SGI = $80D5;
+  GL_COLOR_TABLE_SCALE_SGI = $80D6;
+  GL_COLOR_TABLE_BIAS_SGI = $80D7;
+  GL_COLOR_TABLE_FORMAT_SGI = $80D8;
+  GL_COLOR_TABLE_WIDTH_SGI = $80D9;
+  GL_COLOR_TABLE_RED_SIZE_SGI = $80DA;
+  GL_COLOR_TABLE_GREEN_SIZE_SGI = $80DB;
+  GL_COLOR_TABLE_BLUE_SIZE_SGI = $80DC;
+  GL_COLOR_TABLE_ALPHA_SIZE_SGI = $80DD;
+  GL_COLOR_TABLE_LUMINANCE_SIZE_SGI = $80DE;
+  GL_COLOR_TABLE_INTENSITY_SIZE_SGI = $80DF;
+var
+  glColorTableSGI: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; format: GLenum; _type: GLenum; const table: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyColorTableSGI: procedure(target: GLenum; internalformat: GLenum; x: GLint; y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorTableParameterivSGI: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorTableParameterfvSGI: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableSGI: procedure(target: GLenum; format: GLenum; _type: GLenum; table: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameterivSGI: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetColorTableParameterfvSGI: procedure(target: GLenum; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_SGI_color_table: Boolean;
+
+//***** GL_SGI_texture_color_table *****//
+const
+  GL_TEXTURE_COLOR_TABLE_SGI = $80BC;
+  GL_PROXY_TEXTURE_COLOR_TABLE_SGI = $80BD;
+
+function Load_GL_SGI_texture_color_table: Boolean;
+
+//***** GL_SUN_vertex *****//
+var
+  glColor4ubVertex2fSUN: procedure(r: GLubyte; g: GLubyte; b: GLubyte; a: GLubyte; x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ubVertex2fvSUN: procedure(const c: PGLubyte; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ubVertex3fSUN: procedure(r: GLubyte; g: GLubyte; b: GLubyte; a: GLubyte; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4ubVertex3fvSUN: procedure(const c: PGLubyte; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3fVertex3fSUN: procedure(r: GLfloat; g: GLfloat; b: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3fVertex3fvSUN: procedure(const c: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3fVertex3fSUN: procedure(nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3fVertex3fvSUN: procedure(const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4fNormal3fVertex3fSUN: procedure(r: GLfloat; g: GLfloat; b: GLfloat; a: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4fNormal3fVertex3fvSUN: procedure(const c: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fVertex3fSUN: procedure(s: GLfloat; t: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fVertex3fvSUN: procedure(const tc: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4fVertex4fSUN: procedure(s: GLfloat; t: GLfloat; p: GLfloat; q: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4fVertex4fvSUN: procedure(const tc: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor4ubVertex3fSUN: procedure(s: GLfloat; t: GLfloat; r: GLubyte; g: GLubyte; b: GLubyte; a: GLubyte; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor4ubVertex3fvSUN: procedure(const tc: PGLfloat; const c: PGLubyte; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor3fVertex3fSUN: procedure(s: GLfloat; t: GLfloat; r: GLfloat; g: GLfloat; b: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor3fVertex3fvSUN: procedure(const tc: PGLfloat; const c: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fNormal3fVertex3fSUN: procedure(s: GLfloat; t: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fNormal3fVertex3fvSUN: procedure(const tc: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor4fNormal3fVertex3fSUN: procedure(s: GLfloat; t: GLfloat; r: GLfloat; g: GLfloat; b: GLfloat; a: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2fColor4fNormal3fVertex3fvSUN: procedure(const tc: PGLfloat; const c: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4fColor4fNormal3fVertex4fSUN: procedure(s: GLfloat; t: GLfloat; p: GLfloat; q: GLfloat; r: GLfloat; g: GLfloat; b: GLfloat; a: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4fColor4fNormal3fVertex4fvSUN: procedure(const tc: PGLfloat; const c: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiVertex3fSUN: procedure(rc: GLuint; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiVertex3fvSUN: procedure(const rc: PGLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor4ubVertex3fSUN: procedure(rc: GLuint; r: GLubyte; g: GLubyte; b: GLubyte; a: GLubyte; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor4ubVertex3fvSUN: procedure(const rc: PGLuint; const c: PGLubyte; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor3fVertex3fSUN: procedure(rc: GLuint; r: GLfloat; g: GLfloat; b: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor3fVertex3fvSUN: procedure(const rc: PGLuint; const c: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiNormal3fVertex3fSUN: procedure(rc: GLuint; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiNormal3fVertex3fvSUN: procedure(const rc: PGLuint; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor4fNormal3fVertex3fSUN: procedure(rc: GLuint; r: GLfloat; g: GLfloat; b: GLfloat; a: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiColor4fNormal3fVertex3fvSUN: procedure(const rc: PGLuint; const c: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fVertex3fSUN: procedure(rc: GLuint; s: GLfloat; t: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fVertex3fvSUN: procedure(const rc: PGLuint; const tc: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fNormal3fVertex3fSUN: procedure(rc: GLuint; s: GLfloat; t: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fNormal3fVertex3fvSUN: procedure(const rc: PGLuint; const tc: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fSUN: procedure(rc: GLuint; s: GLfloat; t: GLfloat; r: GLfloat; g: GLfloat; b: GLfloat; a: GLfloat; nx: GLfloat; ny: GLfloat; nz: GLfloat; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fvSUN: procedure(const rc: PGLuint; const tc: PGLfloat; const c: PGLfloat; const n: PGLfloat; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_SUN_vertex: Boolean;
+
+//***** GL_ARB_fragment_program *****//
+const
+  GL_FRAGMENT_PROGRAM_ARB = $8804;
+  // GL_PROGRAM_FORMAT_ASCII_ARB  { already defined }
+  // GL_PROGRAM_LENGTH_ARB  { already defined }
+  // GL_PROGRAM_FORMAT_ARB  { already defined }
+  // GL_PROGRAM_BINDING_ARB  { already defined }
+  // GL_PROGRAM_INSTRUCTIONS_ARB  { already defined }
+  // GL_MAX_PROGRAM_INSTRUCTIONS_ARB  { already defined }
+  // GL_PROGRAM_NATIVE_INSTRUCTIONS_ARB  { already defined }
+  // GL_MAX_PROGRAM_NATIVE_INSTRUCTIONS_ARB  { already defined }
+  // GL_PROGRAM_TEMPORARIES_ARB  { already defined }
+  // GL_MAX_PROGRAM_TEMPORARIES_ARB  { already defined }
+  // GL_PROGRAM_NATIVE_TEMPORARIES_ARB  { already defined }
+  // GL_MAX_PROGRAM_NATIVE_TEMPORARIES_ARB  { already defined }
+  // GL_PROGRAM_PARAMETERS_ARB  { already defined }
+  // GL_MAX_PROGRAM_PARAMETERS_ARB  { already defined }
+  // GL_PROGRAM_NATIVE_PARAMETERS_ARB  { already defined }
+  // GL_MAX_PROGRAM_NATIVE_PARAMETERS_ARB  { already defined }
+  // GL_PROGRAM_ATTRIBS_ARB  { already defined }
+  // GL_MAX_PROGRAM_ATTRIBS_ARB  { already defined }
+  // GL_PROGRAM_NATIVE_ATTRIBS_ARB  { already defined }
+  // GL_MAX_PROGRAM_NATIVE_ATTRIBS_ARB  { already defined }
+  // GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB  { already defined }
+  // GL_MAX_PROGRAM_ENV_PARAMETERS_ARB  { already defined }
+  // GL_PROGRAM_UNDER_NATIVE_LIMITS_ARB  { already defined }
+  GL_PROGRAM_ALU_INSTRUCTIONS_ARB = $8805;
+  GL_PROGRAM_TEX_INSTRUCTIONS_ARB = $8806;
+  GL_PROGRAM_TEX_INDIRECTIONS_ARB = $8807;
+  GL_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB = $8808;
+  GL_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB = $8809;
+  GL_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB = $880A;
+  GL_MAX_PROGRAM_ALU_INSTRUCTIONS_ARB = $880B;
+  GL_MAX_PROGRAM_TEX_INSTRUCTIONS_ARB = $880C;
+  GL_MAX_PROGRAM_TEX_INDIRECTIONS_ARB = $880D;
+  GL_MAX_PROGRAM_NATIVE_ALU_INSTRUCTIONS_ARB = $880E;
+  GL_MAX_PROGRAM_NATIVE_TEX_INSTRUCTIONS_ARB = $880F;
+  GL_MAX_PROGRAM_NATIVE_TEX_INDIRECTIONS_ARB = $8810;
+  // GL_PROGRAM_STRING_ARB  { already defined }
+  // GL_PROGRAM_ERROR_POSITION_ARB  { already defined }
+  // GL_CURRENT_MATRIX_ARB  { already defined }
+  // GL_TRANSPOSE_CURRENT_MATRIX_ARB  { already defined }
+  // GL_CURRENT_MATRIX_STACK_DEPTH_ARB  { already defined }
+  // GL_MAX_PROGRAM_MATRICES_ARB  { already defined }
+  // GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB  { already defined }
+  GL_MAX_TEXTURE_COORDS_ARB = $8871;
+  GL_MAX_TEXTURE_IMAGE_UNITS_ARB = $8872;
+  // GL_PROGRAM_ERROR_STRING_ARB  { already defined }
+  // GL_MATRIX0_ARB  { already defined }
+  // GL_MATRIX1_ARB  { already defined }
+  // GL_MATRIX2_ARB  { already defined }
+  // GL_MATRIX3_ARB  { already defined }
+  // GL_MATRIX4_ARB  { already defined }
+  // GL_MATRIX5_ARB  { already defined }
+  // GL_MATRIX6_ARB  { already defined }
+  // GL_MATRIX7_ARB  { already defined }
+  // GL_MATRIX8_ARB  { already defined }
+  // GL_MATRIX9_ARB  { already defined }
+  // GL_MATRIX10_ARB  { already defined }
+  // GL_MATRIX11_ARB  { already defined }
+  // GL_MATRIX12_ARB  { already defined }
+  // GL_MATRIX13_ARB  { already defined }
+  // GL_MATRIX14_ARB  { already defined }
+  // GL_MATRIX15_ARB  { already defined }
+  // GL_MATRIX16_ARB  { already defined }
+  // GL_MATRIX17_ARB  { already defined }
+  // GL_MATRIX18_ARB  { already defined }
+  // GL_MATRIX19_ARB  { already defined }
+  // GL_MATRIX20_ARB  { already defined }
+  // GL_MATRIX21_ARB  { already defined }
+  // GL_MATRIX22_ARB  { already defined }
+  // GL_MATRIX23_ARB  { already defined }
+  // GL_MATRIX24_ARB  { already defined }
+  // GL_MATRIX25_ARB  { already defined }
+  // GL_MATRIX26_ARB  { already defined }
+  // GL_MATRIX27_ARB  { already defined }
+  // GL_MATRIX28_ARB  { already defined }
+  // GL_MATRIX29_ARB  { already defined }
+  // GL_MATRIX30_ARB  { already defined }
+  // GL_MATRIX31_ARB  { already defined }
+  // glProgramStringARB  { already defined }
+  // glBindProgramARB  { already defined }
+  // glDeleteProgramsARB  { already defined }
+  // glGenProgramsARB  { already defined }
+  // glProgramEnvParameter4dARB  { already defined }
+  // glProgramEnvParameter4dvARB  { already defined }
+  // glProgramEnvParameter4fARB  { already defined }
+  // glProgramEnvParameter4fvARB  { already defined }
+  // glProgramLocalParameter4dARB  { already defined }
+  // glProgramLocalParameter4dvARB  { already defined }
+  // glProgramLocalParameter4fARB  { already defined }
+  // glProgramLocalParameter4fvARB  { already defined }
+  // glGetProgramEnvParameterdvARB  { already defined }
+  // glGetProgramEnvParameterfvARB  { already defined }
+  // glGetProgramLocalParameterdvARB  { already defined }
+  // glGetProgramLocalParameterfvARB  { already defined }
+  // glGetProgramivARB  { already defined }
+  // glGetProgramStringARB  { already defined }
+  // glIsProgramARB  { already defined }
+
+function Load_GL_ARB_fragment_program: Boolean;
+
+//***** GL_ATI_text_fragment_shader *****//
+const
+  GL_TEXT_FRAGMENT_SHADER_ATI = $8200;
+
+function Load_GL_ATI_text_fragment_shader: Boolean;
+
+//***** GL_APPLE_client_storage *****//
+const
+  GL_UNPACK_CLIENT_STORAGE_APPLE = $85B2;
+
+function Load_GL_APPLE_client_storage: Boolean;
+
+//***** GL_APPLE_element_array *****//
+const
+  GL_ELEMENT_ARRAY_APPLE = $8768;
+  GL_ELEMENT_ARRAY_TYPE_APPLE = $8769;
+  GL_ELEMENT_ARRAY_POINTER_APPLE = $876A;
+var
+  glElementPointerAPPLE: procedure(_type: GLenum; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawElementArrayAPPLE: procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawRangeElementArrayAPPLE: procedure(mode: GLenum; start: GLuint; _end: GLuint; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawElementArrayAPPLE: procedure(mode: GLenum; const first: PGLint; const count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawRangeElementArrayAPPLE: procedure(mode: GLenum; start: GLuint; _end: GLuint; const first: PGLint; const count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_APPLE_element_array: Boolean;
+
+//***** GL_APPLE_fence *****//
+const
+  GL_DRAW_PIXELS_APPLE = $8A0A;
+  GL_FENCE_APPLE = $8A0B;
+var
+  glGenFencesAPPLE: procedure(n: GLsizei; fences: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteFencesAPPLE: procedure(n: GLsizei; const fences: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSetFenceAPPLE: procedure(fence: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsFenceAPPLE: function(fence: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTestFenceAPPLE: function(fence: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFinishFenceAPPLE: procedure(fence: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTestObjectAPPLE: function(_object: GLenum; name: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFinishObjectAPPLE: procedure(_object: GLenum; name: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_APPLE_fence: Boolean;
+
+//***** GL_APPLE_vertex_array_object *****//
+const
+  GL_VERTEX_ARRAY_BINDING_APPLE = $85B5;
+var
+  glBindVertexArrayAPPLE: procedure(_array: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteVertexArraysAPPLE: procedure(n: GLsizei; const arrays: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenVertexArraysAPPLE: procedure(n: GLsizei; const arrays: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsVertexArrayAPPLE: function(_array: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_APPLE_vertex_array_object: Boolean;
+
+//***** GL_APPLE_vertex_array_range *****//
+const
+  GL_VERTEX_ARRAY_RANGE_APPLE = $851D;
+  GL_VERTEX_ARRAY_RANGE_LENGTH_APPLE = $851E;
+  GL_MAX_VERTEX_ARRAY_RANGE_ELEMENT_APPLE = $8520;
+  GL_VERTEX_ARRAY_RANGE_POINTER_APPLE = $8521;
+  GL_VERTEX_ARRAY_STORAGE_HINT_APPLE = $851F;
+  GL_STORAGE_CACHED_APPLE = $85BE;
+  GL_STORAGE_SHARED_APPLE = $85BF;
+var
+  glVertexArrayRangeAPPLE: procedure(length: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFlushVertexArrayRangeAPPLE: procedure(length: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexArrayParameteriAPPLE: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_APPLE_vertex_array_range: Boolean;
+
+{$IFDEF WINDOWS}
+//***** WGL_ARB_pixel_format *****//
+const
+  WGL_NUMBER_PIXEL_FORMATS_ARB = $2000;
+  WGL_DRAW_TO_WINDOW_ARB = $2001;
+  WGL_DRAW_TO_BITMAP_ARB = $2002;
+  WGL_ACCELERATION_ARB = $2003;
+  WGL_NEED_PALETTE_ARB = $2004;
+  WGL_NEED_SYSTEM_PALETTE_ARB = $2005;
+  WGL_SWAP_LAYER_BUFFERS_ARB = $2006;
+  WGL_SWAP_METHOD_ARB = $2007;
+  WGL_NUMBER_OVERLAYS_ARB = $2008;
+  WGL_NUMBER_UNDERLAYS_ARB = $2009;
+  WGL_TRANSPARENT_ARB = $200A;
+  WGL_TRANSPARENT_RED_VALUE_ARB = $2037;
+  WGL_TRANSPARENT_GREEN_VALUE_ARB = $2038;
+  WGL_TRANSPARENT_BLUE_VALUE_ARB = $2039;
+  WGL_TRANSPARENT_ALPHA_VALUE_ARB = $203A;
+  WGL_TRANSPARENT_INDEX_VALUE_ARB = $203B;
+  WGL_SHARE_DEPTH_ARB = $200C;
+  WGL_SHARE_STENCIL_ARB = $200D;
+  WGL_SHARE_ACCUM_ARB = $200E;
+  WGL_SUPPORT_GDI_ARB = $200F;
+  WGL_SUPPORT_OPENGL_ARB = $2010;
+  WGL_DOUBLE_BUFFER_ARB = $2011;
+  WGL_STEREO_ARB = $2012;
+  WGL_PIXEL_TYPE_ARB = $2013;
+  WGL_COLOR_BITS_ARB = $2014;
+  WGL_RED_BITS_ARB = $2015;
+  WGL_RED_SHIFT_ARB = $2016;
+  WGL_GREEN_BITS_ARB = $2017;
+  WGL_GREEN_SHIFT_ARB = $2018;
+  WGL_BLUE_BITS_ARB = $2019;
+  WGL_BLUE_SHIFT_ARB = $201A;
+  WGL_ALPHA_BITS_ARB = $201B;
+  WGL_ALPHA_SHIFT_ARB = $201C;
+  WGL_ACCUM_BITS_ARB = $201D;
+  WGL_ACCUM_RED_BITS_ARB = $201E;
+  WGL_ACCUM_GREEN_BITS_ARB = $201F;
+  WGL_ACCUM_BLUE_BITS_ARB = $2020;
+  WGL_ACCUM_ALPHA_BITS_ARB = $2021;
+  WGL_DEPTH_BITS_ARB = $2022;
+  WGL_STENCIL_BITS_ARB = $2023;
+  WGL_AUX_BUFFERS_ARB = $2024;
+  WGL_NO_ACCELERATION_ARB = $2025;
+  WGL_GENERIC_ACCELERATION_ARB = $2026;
+  WGL_FULL_ACCELERATION_ARB = $2027;
+  WGL_SWAP_EXCHANGE_ARB = $2028;
+  WGL_SWAP_COPY_ARB = $2029;
+  WGL_SWAP_UNDEFINED_ARB = $202A;
+  WGL_TYPE_RGBA_ARB = $202B;
+  WGL_TYPE_COLORINDEX_ARB = $202C;
+var
+  wglGetPixelFormatAttribivARB: function(hdc: HDC; iPixelFormat: GLint; iLayerPlane: GLint; nAttributes: GLuint; const piAttributes: PGLint; piValues: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetPixelFormatAttribfvARB: function(hdc: HDC; iPixelFormat: GLint; iLayerPlane: GLint; nAttributes: GLuint; const piAttributes: PGLint; pfValues: PGLfloat): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglChoosePixelFormatARB: function(hdc: HDC; const piAttribIList: PGLint; const pfAttribFList: PGLfloat; nMaxFormats: GLuint; piFormats: PGLint; nNumFormats: PGLuint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_pixel_format: Boolean;
+
+//***** WGL_ARB_make_current_read *****//
+const
+  WGL_ERROR_INVALID_PIXEL_TYPE_ARB = $2043;
+  WGL_ERROR_INCOMPATIBLE_DEVICE_CONTEXTS_ARB = $2054;
+var
+  wglMakeContextCurrentARB: function(hDrawDC: HDC; hReadDC: HDC; hglrc: HGLRC): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetCurrentReadDCARB: function(): HDC; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_make_current_read: Boolean;
+
+//***** WGL_ARB_pbuffer *****//
+const
+  WGL_DRAW_TO_PBUFFER_ARB = $202D;
+  // WGL_DRAW_TO_PBUFFER_ARB  { already defined }
+  WGL_MAX_PBUFFER_PIXELS_ARB = $202E;
+  WGL_MAX_PBUFFER_WIDTH_ARB = $202F;
+  WGL_MAX_PBUFFER_HEIGHT_ARB = $2030;
+  WGL_PBUFFER_LARGEST_ARB = $2033;
+  WGL_PBUFFER_WIDTH_ARB = $2034;
+  WGL_PBUFFER_HEIGHT_ARB = $2035;
+  WGL_PBUFFER_LOST_ARB = $2036;
+var
+  wglCreatePbufferARB: function(hDC: HDC; iPixelFormat: GLint; iWidth: GLint; iHeight: GLint; const piAttribList: PGLint): THandle; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetPbufferDCARB: function(hPbuffer: THandle): HDC; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglReleasePbufferDCARB: function(hPbuffer: THandle; hDC: HDC): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDestroyPbufferARB: function(hPbuffer: THandle): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglQueryPbufferARB: function(hPbuffer: THandle; iAttribute: GLint; piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_pbuffer: Boolean;
+
+//***** WGL_EXT_swap_control *****//
+var
+  wglSwapIntervalEXT: function(interval: GLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetSwapIntervalEXT: function(): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_EXT_swap_control: Boolean;
+
+//***** WGL_ARB_render_texture *****//
+const
+  WGL_BIND_TO_TEXTURE_RGB_ARB = $2070;
+  WGL_BIND_TO_TEXTURE_RGBA_ARB = $2071;
+  WGL_TEXTURE_FORMAT_ARB = $2072;
+  WGL_TEXTURE_TARGET_ARB = $2073;
+  WGL_MIPMAP_TEXTURE_ARB = $2074;
+  WGL_TEXTURE_RGB_ARB = $2075;
+  WGL_TEXTURE_RGBA_ARB = $2076;
+  WGL_NO_TEXTURE_ARB = $2077;
+  WGL_TEXTURE_CUBE_MAP_ARB = $2078;
+  WGL_TEXTURE_1D_ARB = $2079;
+  WGL_TEXTURE_2D_ARB = $207A;
+  // WGL_NO_TEXTURE_ARB  { already defined }
+  WGL_MIPMAP_LEVEL_ARB = $207B;
+  WGL_CUBE_MAP_FACE_ARB = $207C;
+  WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB = $207D;
+  WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB = $207E;
+  WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB = $207F;
+  WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB = $2080;
+  WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB = $2081;
+  WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB = $2082;
+  WGL_FRONT_LEFT_ARB = $2083;
+  WGL_FRONT_RIGHT_ARB = $2084;
+  WGL_BACK_LEFT_ARB = $2085;
+  WGL_BACK_RIGHT_ARB = $2086;
+  WGL_AUX0_ARB = $2087;
+  WGL_AUX1_ARB = $2088;
+  WGL_AUX2_ARB = $2089;
+  WGL_AUX3_ARB = $208A;
+  WGL_AUX4_ARB = $208B;
+  WGL_AUX5_ARB = $208C;
+  WGL_AUX6_ARB = $208D;
+  WGL_AUX7_ARB = $208E;
+  WGL_AUX8_ARB = $208F;
+  WGL_AUX9_ARB = $2090;
+var
+  wglBindTexImageARB: function(hPbuffer: THandle; iBuffer: GLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglReleaseTexImageARB: function(hPbuffer: THandle; iBuffer: GLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglSetPbufferAttribARB: function(hPbuffer: THandle; const piAttribList: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_ARB_render_texture: Boolean;
+
+//***** WGL_EXT_extensions_string *****//
+var
+  wglGetExtensionsStringEXT: function(): Pchar; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_EXT_extensions_string: Boolean;
+
+//***** WGL_EXT_make_current_read *****//
+var
+  wglMakeContextCurrentEXT: function(hDrawDC: HDC; hReadDC: HDC; hglrc: HGLRC): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetCurrentReadDCEXT: function(): HDC; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_EXT_make_current_read: Boolean;
+
+//***** WGL_EXT_pbuffer *****//
+const
+  WGL_DRAW_TO_PBUFFER_EXT = $202D;
+  WGL_MAX_PBUFFER_PIXELS_EXT = $202E;
+  WGL_MAX_PBUFFER_WIDTH_EXT = $202F;
+  WGL_MAX_PBUFFER_HEIGHT_EXT = $2030;
+  WGL_OPTIMAL_PBUFFER_WIDTH_EXT = $2031;
+  WGL_OPTIMAL_PBUFFER_HEIGHT_EXT = $2032;
+  WGL_PBUFFER_LARGEST_EXT = $2033;
+  WGL_PBUFFER_WIDTH_EXT = $2034;
+  WGL_PBUFFER_HEIGHT_EXT = $2035;
+var
+  wglCreatePbufferEXT: function(hDC: HDC; iPixelFormat: GLint; iWidth: GLint; iHeight: GLint; const piAttribList: PGLint): THandle; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetPbufferDCEXT: function(hPbuffer: THandle): HDC; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglReleasePbufferDCEXT: function(hPbuffer: THandle; hDC: HDC): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDestroyPbufferEXT: function(hPbuffer: THandle): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglQueryPbufferEXT: function(hPbuffer: THandle; iAttribute: GLint; piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_EXT_pbuffer: Boolean;
+
+//***** WGL_EXT_pixel_format *****//
+const
+  WGL_NUMBER_PIXEL_FORMATS_EXT = $2000;
+  WGL_DRAW_TO_WINDOW_EXT = $2001;
+  WGL_DRAW_TO_BITMAP_EXT = $2002;
+  WGL_ACCELERATION_EXT = $2003;
+  WGL_NEED_PALETTE_EXT = $2004;
+  WGL_NEED_SYSTEM_PALETTE_EXT = $2005;
+  WGL_SWAP_LAYER_BUFFERS_EXT = $2006;
+  WGL_SWAP_METHOD_EXT = $2007;
+  WGL_NUMBER_OVERLAYS_EXT = $2008;
+  WGL_NUMBER_UNDERLAYS_EXT = $2009;
+  WGL_TRANSPARENT_EXT = $200A;
+  WGL_TRANSPARENT_VALUE_EXT = $200B;
+  WGL_SHARE_DEPTH_EXT = $200C;
+  WGL_SHARE_STENCIL_EXT = $200D;
+  WGL_SHARE_ACCUM_EXT = $200E;
+  WGL_SUPPORT_GDI_EXT = $200F;
+  WGL_SUPPORT_OPENGL_EXT = $2010;
+  WGL_DOUBLE_BUFFER_EXT = $2011;
+  WGL_STEREO_EXT = $2012;
+  WGL_PIXEL_TYPE_EXT = $2013;
+  WGL_COLOR_BITS_EXT = $2014;
+  WGL_RED_BITS_EXT = $2015;
+  WGL_RED_SHIFT_EXT = $2016;
+  WGL_GREEN_BITS_EXT = $2017;
+  WGL_GREEN_SHIFT_EXT = $2018;
+  WGL_BLUE_BITS_EXT = $2019;
+  WGL_BLUE_SHIFT_EXT = $201A;
+  WGL_ALPHA_BITS_EXT = $201B;
+  WGL_ALPHA_SHIFT_EXT = $201C;
+  WGL_ACCUM_BITS_EXT = $201D;
+  WGL_ACCUM_RED_BITS_EXT = $201E;
+  WGL_ACCUM_GREEN_BITS_EXT = $201F;
+  WGL_ACCUM_BLUE_BITS_EXT = $2020;
+  WGL_ACCUM_ALPHA_BITS_EXT = $2021;
+  WGL_DEPTH_BITS_EXT = $2022;
+  WGL_STENCIL_BITS_EXT = $2023;
+  WGL_AUX_BUFFERS_EXT = $2024;
+  WGL_NO_ACCELERATION_EXT = $2025;
+  WGL_GENERIC_ACCELERATION_EXT = $2026;
+  WGL_FULL_ACCELERATION_EXT = $2027;
+  WGL_SWAP_EXCHANGE_EXT = $2028;
+  WGL_SWAP_COPY_EXT = $2029;
+  WGL_SWAP_UNDEFINED_EXT = $202A;
+  WGL_TYPE_RGBA_EXT = $202B;
+  WGL_TYPE_COLORINDEX_EXT = $202C;
+var
+  wglGetPixelFormatAttribivEXT: function(hdc: HDC; iPixelFormat: GLint; iLayerPlane: GLint; nAttributes: GLuint; piAttributes: PGLint; piValues: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetPixelFormatAttribfvEXT: function(hdc: HDC; iPixelFormat: GLint; iLayerPlane: GLint; nAttributes: GLuint; piAttributes: PGLint; pfValues: PGLfloat): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglChoosePixelFormatEXT: function(hdc: HDC; const piAttribIList: PGLint; const pfAttribFList: PGLfloat; nMaxFormats: GLuint; piFormats: PGLint; nNumFormats: PGLuint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_EXT_pixel_format: Boolean;
+
+//***** WGL_I3D_digital_video_control *****//
+const
+  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_FRAMEBUFFER_I3D = $2050;
+  WGL_DIGITAL_VIDEO_CURSOR_ALPHA_VALUE_I3D = $2051;
+  WGL_DIGITAL_VIDEO_CURSOR_INCLUDED_I3D = $2052;
+  WGL_DIGITAL_VIDEO_GAMMA_CORRECTED_I3D = $2053;
+var
+  wglGetDigitalVideoParametersI3D: function(hDC: HDC; iAttribute: GLint; piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglSetDigitalVideoParametersI3D: function(hDC: HDC; iAttribute: GLint; const piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_digital_video_control: Boolean;
+
+//***** WGL_I3D_gamma *****//
+const
+  WGL_GAMMA_TABLE_SIZE_I3D = $204E;
+  WGL_GAMMA_EXCLUDE_DESKTOP_I3D = $204F;
+  // WGL_GAMMA_EXCLUDE_DESKTOP_I3D  { already defined }
+var
+  wglGetGammaTableParametersI3D: function(hDC: HDC; iAttribute: GLint; piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglSetGammaTableParametersI3D: function(hDC: HDC; iAttribute: GLint; const piValue: PGLint): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetGammaTableI3D: function(hDC: HDC; iEntries: GLint; puRed: PGLUSHORT; puGreen: PGLUSHORT; puBlue: PGLUSHORT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglSetGammaTableI3D: function(hDC: HDC; iEntries: GLint; const puRed: PGLUSHORT; const puGreen: PGLUSHORT; const puBlue: PGLUSHORT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_gamma: Boolean;
+
+//***** WGL_I3D_genlock *****//
+const
+  WGL_GENLOCK_SOURCE_MULTIVIEW_I3D = $2044;
+  WGL_GENLOCK_SOURCE_EXTERNAL_SYNC_I3D = $2045;
+  WGL_GENLOCK_SOURCE_EXTERNAL_FIELD_I3D = $2046;
+  WGL_GENLOCK_SOURCE_EXTERNAL_TTL_I3D = $2047;
+  WGL_GENLOCK_SOURCE_DIGITAL_SYNC_I3D = $2048;
+  WGL_GENLOCK_SOURCE_DIGITAL_FIELD_I3D = $2049;
+  WGL_GENLOCK_SOURCE_EDGE_FALLING_I3D = $204A;
+  WGL_GENLOCK_SOURCE_EDGE_RISING_I3D = $204B;
+  WGL_GENLOCK_SOURCE_EDGE_BOTH_I3D = $204C;
+var
+  wglEnableGenlockI3D: function(hDC: HDC): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglDisableGenlockI3D: function(hDC: HDC): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglIsEnabledGenlockI3D: function(hDC: HDC; pFlag: PBOOL): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGenlockSourceI3D: function(hDC: HDC; uSource: GLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetGenlockSourceI3D: function(hDC: HDC; uSource: PGLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGenlockSourceEdgeI3D: function(hDC: HDC; uEdge: GLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetGenlockSourceEdgeI3D: function(hDC: HDC; uEdge: PGLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGenlockSampleRateI3D: function(hDC: HDC; uRate: GLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetGenlockSampleRateI3D: function(hDC: HDC; uRate: PGLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGenlockSourceDelayI3D: function(hDC: HDC; uDelay: GLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglGetGenlockSourceDelayI3D: function(hDC: HDC; uDelay: PGLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  wglQueryGenlockMaxSourceDelayI3D: function(hDC: HDC; uMaxLineDelay: PGLUINT; uMaxPixelDelay: PGLUINT): BOOL; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_WGL_I3D_genlock: Boolean;
+{$ENDIF}
+
+//***** GL_ARB_matrix_palette *****//
+const
+  GL_MATRIX_PALETTE_ARB = $8840;
+  GL_MAX_MATRIX_PALETTE_STACK_DEPTH_ARB = $8841;
+  GL_MAX_PALETTE_MATRICES_ARB = $8842;
+  GL_CURRENT_PALETTE_MATRIX_ARB = $8843;
+  GL_MATRIX_INDEX_ARRAY_ARB = $8844;
+  GL_CURRENT_MATRIX_INDEX_ARB = $8845;
+  GL_MATRIX_INDEX_ARRAY_SIZE_ARB = $8846;
+  GL_MATRIX_INDEX_ARRAY_TYPE_ARB = $8847;
+  GL_MATRIX_INDEX_ARRAY_STRIDE_ARB = $8848;
+  GL_MATRIX_INDEX_ARRAY_POINTER_ARB = $8849;
+var
+  glCurrentPaletteMatrixARB: procedure(index: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMatrixIndexubvARB: procedure(size: GLint; indices: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMatrixIndexusvARB: procedure(size: GLint; indices: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMatrixIndexuivARB: procedure(size: GLint; indices: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMatrixIndexPointerARB: procedure(size: GLint; _type: GLenum; stride: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_matrix_palette: Boolean;
+
+//***** GL_NV_element_array *****//
+const
+  GL_ELEMENT_ARRAY_TYPE_NV = $8769;
+  GL_ELEMENT_ARRAY_POINTER_NV = $876A;
+var
+  glElementPointerNV: procedure(_type: GLenum; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawElementArrayNV: procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawRangeElementArrayNV: procedure(mode: GLenum; start: GLuint; _end: GLuint; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawElementArrayNV: procedure(mode: GLenum; const first: PGLint; const count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawRangeElementArrayNV: procedure(mode: GLenum; start: GLuint; _end: GLuint; const first: PGLint; const count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_element_array: Boolean;
+
+//***** GL_NV_float_buffer *****//
+const
+  GL_FLOAT_R_NV = $8880;
+  GL_FLOAT_RG_NV = $8881;
+  GL_FLOAT_RGB_NV = $8882;
+  GL_FLOAT_RGBA_NV = $8883;
+  GL_FLOAT_R16_NV = $8884;
+  GL_FLOAT_R32_NV = $8885;
+  GL_FLOAT_RG16_NV = $8886;
+  GL_FLOAT_RG32_NV = $8887;
+  GL_FLOAT_RGB16_NV = $8888;
+  GL_FLOAT_RGB32_NV = $8889;
+  GL_FLOAT_RGBA16_NV = $888A;
+  GL_FLOAT_RGBA32_NV = $888B;
+  GL_TEXTURE_FLOAT_COMPONENTS_NV = $888C;
+  GL_FLOAT_CLEAR_COLOR_VALUE_NV = $888D;
+  GL_FLOAT_RGBA_MODE_NV = $888E;
+{$IFDEF WINDOWS}
+  WGL_FLOAT_COMPONENTS_NV = $20B0;
+  WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_R_NV = $20B1;
+  WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RG_NV = $20B2;
+  WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV = $20B3;
+  WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGBA_NV = $20B4;
+  WGL_TEXTURE_FLOAT_R_NV = $20B5;
+  WGL_TEXTURE_FLOAT_RG_NV = $20B6;
+  WGL_TEXTURE_FLOAT_RGB_NV = $20B7;
+  WGL_TEXTURE_FLOAT_RGBA_NV = $20B8;
+{$ENDIF}
+
+function Load_GL_NV_float_buffer: Boolean;
+
+//***** GL_NV_fragment_program *****//
+const
+  GL_FRAGMENT_PROGRAM_NV = $8870;
+  GL_MAX_TEXTURE_COORDS_NV = $8871;
+  GL_MAX_TEXTURE_IMAGE_UNITS_NV = $8872;
+  GL_FRAGMENT_PROGRAM_BINDING_NV = $8873;
+  GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV = $8868;
+  GL_PROGRAM_ERROR_STRING_NV = $8874;
+var
+  glProgramNamedParameter4fNV: procedure(id: GLuint; len: GLsizei; const name: PGLubyte; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glProgramNamedParameter4dNV: procedure(id: GLuint; len: GLsizei; const name: PGLubyte; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramNamedParameterfvNV: procedure(id: GLuint; len: GLsizei; const name: PGLubyte; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramNamedParameterdvNV: procedure(id: GLuint; len: GLsizei; const name: PGLubyte; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  // glProgramLocalParameter4dARB  { already defined }
+  // glProgramLocalParameter4dvARB  { already defined }
+  // glProgramLocalParameter4fARB  { already defined }
+  // glProgramLocalParameter4fvARB  { already defined }
+  // glGetProgramLocalParameterdvARB  { already defined }
+  // glGetProgramLocalParameterfvARB  { already defined }
+
+function Load_GL_NV_fragment_program: Boolean;
+
+//***** GL_NV_primitive_restart *****//
+const
+  GL_PRIMITIVE_RESTART_NV = $8558;
+  GL_PRIMITIVE_RESTART_INDEX_NV = $8559;
+var
+  glPrimitiveRestartNV: procedure(); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPrimitiveRestartIndexNV: procedure(index: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_primitive_restart: Boolean;
+
+//***** GL_NV_vertex_program2 *****//
+
+function Load_GL_NV_vertex_program2: Boolean;
+
+{$IFDEF WINDOWS}
+//***** WGL_NV_render_texture_rectangle *****//
+const
+  WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV = $20A0;
+  WGL_BIND_TO_TEXTURE_RECTANGLE_RGBA_NV = $20A1;
+  WGL_TEXTURE_RECTANGLE_NV = $20A2;
+
+function Load_WGL_NV_render_texture_rectangle: Boolean;
+{$ENDIF}
+
+//***** GL_NV_pixel_data_range *****//
+const
+  GL_WRITE_PIXEL_DATA_RANGE_NV = $8878;
+  GL_READ_PIXEL_DATA_RANGE_NV = $8879;
+  GL_WRITE_PIXEL_DATA_RANGE_LENGTH_NV = $887A;
+  GL_READ_PIXEL_DATA_RANGE_LENGTH_NV = $887B;
+  GL_WRITE_PIXEL_DATA_RANGE_POINTER_NV = $887C;
+  GL_READ_PIXEL_DATA_RANGE_POINTER_NV = $887D;
+var
+  glPixelDataRangeNV: procedure(target: GLenum; length: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFlushPixelDataRangeNV: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  // wglAllocateMemoryNV  { already defined }
+  // wglFreeMemoryNV  { already defined }
+
+function Load_GL_NV_pixel_data_range: Boolean;
+
+//***** GL_EXT_texture_rectangle *****//
+const
+  GL_TEXTURE_RECTANGLE_EXT = $84F5;
+  GL_TEXTURE_BINDING_RECTANGLE_EXT = $84F6;
+  GL_PROXY_TEXTURE_RECTANGLE_EXT = $84F7;
+  GL_MAX_RECTANGLE_TEXTURE_SIZE_EXT = $84F8;
+
+function Load_GL_EXT_texture_rectangle: Boolean;
+
+//***** GL_S3_s3tc *****//
+const
+  GL_RGB_S3TC = $83A0;
+  GL_RGB4_S3TC = $83A1;
+  GL_RGBA_S3TC = $83A2;
+  GL_RGBA4_S3TC = $83A3;
+
+function Load_GL_S3_s3tc: Boolean;
+
+//***** GL_ATI_draw_buffers *****//
+const
+  GL_MAX_DRAW_BUFFERS_ATI = $8824;
+  GL_DRAW_BUFFER0_ATI = $8825;
+  GL_DRAW_BUFFER1_ATI = $8826;
+  GL_DRAW_BUFFER2_ATI = $8827;
+  GL_DRAW_BUFFER3_ATI = $8828;
+  GL_DRAW_BUFFER4_ATI = $8829;
+  GL_DRAW_BUFFER5_ATI = $882A;
+  GL_DRAW_BUFFER6_ATI = $882B;
+  GL_DRAW_BUFFER7_ATI = $882C;
+  GL_DRAW_BUFFER8_ATI = $882D;
+  GL_DRAW_BUFFER9_ATI = $882E;
+  GL_DRAW_BUFFER10_ATI = $882F;
+  GL_DRAW_BUFFER11_ATI = $8830;
+  GL_DRAW_BUFFER12_ATI = $8831;
+  GL_DRAW_BUFFER13_ATI = $8832;
+  GL_DRAW_BUFFER14_ATI = $8833;
+  GL_DRAW_BUFFER15_ATI = $8834;
+var
+  glDrawBuffersATI: procedure(n: GLsizei; const bufs: PGLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_draw_buffers: Boolean;
+
+{$IFDEF WINDOWS}
+//***** WGL_ATI_pixel_format_float *****//
+const
+  WGL_RGBA_FLOAT_MODE_ATI = $8820;
+  WGL_COLOR_CLEAR_UNCLAMPED_VALUE_ATI = $8835;
+  WGL_TYPE_RGBA_FLOAT_ATI = $21A0;
+
+function Load_WGL_ATI_pixel_format_float: Boolean;
+{$ENDIF}
+
+//***** GL_ATI_texture_env_combine3 *****//
+const
+  GL_MODULATE_ADD_ATI = $8744;
+  GL_MODULATE_SIGNED_ADD_ATI = $8745;
+  GL_MODULATE_SUBTRACT_ATI = $8746;
+
+function Load_GL_ATI_texture_env_combine3: Boolean;
+
+//***** GL_ATI_texture_float *****//
+const
+  GL_RGBA_FLOAT32_ATI = $8814;
+  GL_RGB_FLOAT32_ATI = $8815;
+  GL_ALPHA_FLOAT32_ATI = $8816;
+  GL_INTENSITY_FLOAT32_ATI = $8817;
+  GL_LUMINANCE_FLOAT32_ATI = $8818;
+  GL_LUMINANCE_ALPHA_FLOAT32_ATI = $8819;
+  GL_RGBA_FLOAT16_ATI = $881A;
+  GL_RGB_FLOAT16_ATI = $881B;
+  GL_ALPHA_FLOAT16_ATI = $881C;
+  GL_INTENSITY_FLOAT16_ATI = $881D;
+  GL_LUMINANCE_FLOAT16_ATI = $881E;
+  GL_LUMINANCE_ALPHA_FLOAT16_ATI = $881F;
+
+function Load_GL_ATI_texture_float: Boolean;
+
+//***** GL_NV_texture_expand_normal *****//
+const
+  GL_TEXTURE_UNSIGNED_REMAP_MODE_NV = $888F;
+
+function Load_GL_NV_texture_expand_normal: Boolean;
+
+//***** GL_NV_half_float *****//
+const
+  GL_HALF_FLOAT_NV = $140B;
+var
+  glVertex2hNV: procedure(x: GLushort; y: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex2hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3hNV: procedure(x: GLushort; y: GLushort; z: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex3hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4hNV: procedure(x: GLushort; y: GLushort; z: GLushort; w: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertex4hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3hNV: procedure(nx: GLushort; ny: GLushort; nz: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3hNV: procedure(red: GLushort; green: GLushort; blue: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor3hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4hNV: procedure(red: GLushort; green: GLushort; blue: GLushort; alpha: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColor4hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1hNV: procedure(s: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord1hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2hNV: procedure(s: GLushort; t: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord2hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3hNV: procedure(s: GLushort; t: GLushort; r: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord3hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4hNV: procedure(s: GLushort; t: GLushort; r: GLushort; q: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexCoord4hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1hNV: procedure(target: GLenum; s: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord1hvNV: procedure(target: GLenum; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2hNV: procedure(target: GLenum; s: GLushort; t: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord2hvNV: procedure(target: GLenum; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3hNV: procedure(target: GLenum; s: GLushort; t: GLushort; r: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord3hvNV: procedure(target: GLenum; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4hNV: procedure(target: GLenum; s: GLushort; t: GLushort; r: GLushort; q: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiTexCoord4hvNV: procedure(target: GLenum; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordhNV: procedure(fog: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordhvNV: procedure(const fog: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3hNV: procedure(red: GLushort; green: GLushort; blue: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3hvNV: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexWeighthNV: procedure(weight: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexWeighthvNV: procedure(const weight: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1hNV: procedure(index: GLuint; x: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1hvNV: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2hNV: procedure(index: GLuint; x: GLushort; y: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2hvNV: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3hNV: procedure(index: GLuint; x: GLushort; y: GLushort; z: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3hvNV: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4hNV: procedure(index: GLuint; x: GLushort; y: GLushort; z: GLushort; w: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4hvNV: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs1hvNV: procedure(index: GLuint; n: GLsizei; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs2hvNV: procedure(index: GLuint; n: GLsizei; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs3hvNV: procedure(index: GLuint; n: GLsizei; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribs4hvNV: procedure(index: GLuint; n: GLsizei; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_NV_half_float: Boolean;
+
+//***** GL_ATI_map_object_buffer *****//
+var
+  glMapObjectBufferATI: function(buffer: GLuint): PGLvoid; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUnmapObjectBufferATI: procedure(buffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_map_object_buffer: Boolean;
+
+//***** GL_ATI_separate_stencil *****//
+const
+  GL_KEEP = $1E00;
+  GL_ZERO = $0000;
+  GL_REPLACE = $1E01;
+  GL_INCR = $1E02;
+  GL_DECR = $1E03;
+  GL_INVERT = $150A;
+  GL_NEVER = $0200;
+  GL_LESS = $0201;
+  GL_LEQUAL = $0203;
+  GL_GREATER = $0204;
+  GL_GEQUAL = $0206;
+  GL_EQUAL = $0202;
+  GL_NOTEQUAL = $0205;
+  GL_ALWAYS = $0207;
+  GL_FRONT = $0404;
+  GL_BACK = $0405;
+  GL_FRONT_AND_BACK = $0408;
+  GL_STENCIL_BACK_FUNC_ATI = $8800;
+  GL_STENCIL_BACK_FAIL_ATI = $8801;
+  GL_STENCIL_BACK_PASS_DEPTH_FAIL_ATI = $8802;
+  GL_STENCIL_BACK_PASS_DEPTH_PASS_ATI = $8803;
+var
+  glStencilOpSeparateATI: procedure(face: GLenum; sfail: GLenum; dpfail: GLenum; dppass: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilFuncSeparateATI: procedure(frontfunc: GLenum; backfunc: GLenum; ref: GLint; mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_separate_stencil: Boolean;
+
+//***** GL_ATI_vertex_attrib_array_object *****//
+var
+  glVertexAttribArrayObjectATI: procedure(index: GLuint; size: GLint; _type: GLenum; normalized: GLboolean; stride: GLsizei; buffer: GLuint; offset: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribArrayObjectfvATI: procedure(index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribArrayObjectivATI: procedure(index: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ATI_vertex_attrib_array_object: Boolean;
+
+//***** GL_ARB_vertex_buffer_object *****//
+const
+  GL_ARRAY_BUFFER_ARB = $8892;
+  GL_ELEMENT_ARRAY_BUFFER_ARB = $8893;
+  GL_ARRAY_BUFFER_BINDING_ARB = $8894;
+  GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB = $8895;
+  GL_VERTEX_ARRAY_BUFFER_BINDING_ARB = $8896;
+  GL_NORMAL_ARRAY_BUFFER_BINDING_ARB = $8897;
+  GL_COLOR_ARRAY_BUFFER_BINDING_ARB = $8898;
+  GL_INDEX_ARRAY_BUFFER_BINDING_ARB = $8899;
+  GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB = $889A;
+  GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB = $889B;
+  GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB = $889C;
+  GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB = $889D;
+  GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB = $889E;
+  GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB = $889F;
+  GL_STREAM_DRAW_ARB = $88E0;
+  GL_STREAM_READ_ARB = $88E1;
+  GL_STREAM_COPY_ARB = $88E2;
+  GL_STATIC_DRAW_ARB = $88E4;
+  GL_STATIC_READ_ARB = $88E5;
+  GL_STATIC_COPY_ARB = $88E6;
+  GL_DYNAMIC_DRAW_ARB = $88E8;
+  GL_DYNAMIC_READ_ARB = $88E9;
+  GL_DYNAMIC_COPY_ARB = $88EA;
+  GL_READ_ONLY_ARB = $88B8;
+  GL_WRITE_ONLY_ARB = $88B9;
+  GL_READ_WRITE_ARB = $88BA;
+  GL_BUFFER_SIZE_ARB = $8764;
+  GL_BUFFER_USAGE_ARB = $8765;
+  GL_BUFFER_ACCESS_ARB = $88BB;
+  GL_BUFFER_MAPPED_ARB = $88BC;
+  GL_BUFFER_MAP_POINTER_ARB = $88BD;
+var
+  glBindBufferARB: procedure(target: GLenum; buffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteBuffersARB: procedure(n: GLsizei; const buffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenBuffersARB: procedure(n: GLsizei; buffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsBufferARB: function(buffer: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBufferDataARB: procedure(target: GLenum; size: GLsizeiptrARB; const data: PGLvoid; usage: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBufferSubDataARB: procedure(target: GLenum; offset: GLintptrARB; size: GLsizeiptrARB; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferSubDataARB: procedure(target: GLenum; offset: GLintptrARB; size: GLsizeiptrARB; data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapBufferARB: function(target: GLenum; access: GLenum): PGLvoid; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUnmapBufferARB: function(target: GLenum): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferParameterivARB: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferPointervARB: procedure(target: GLenum; pname: GLenum; params: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_vertex_buffer_object: Boolean;
+
+//***** GL_ARB_occlusion_query *****//
+const
+  GL_SAMPLES_PASSED_ARB = $8914;
+  GL_QUERY_COUNTER_BITS_ARB = $8864;
+  GL_CURRENT_QUERY_ARB = $8865;
+  GL_QUERY_RESULT_ARB = $8866;
+  GL_QUERY_RESULT_AVAILABLE_ARB = $8867;
+var
+  glGenQueriesARB: procedure(n: GLsizei; ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteQueriesARB: procedure(n: GLsizei; const ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsQueryARB: function(id: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBeginQueryARB: procedure(target: GLenum; id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndQueryARB: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryivARB: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryObjectivARB: procedure(id: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryObjectuivARB: procedure(id: GLuint; pname: GLenum; params: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_occlusion_query: Boolean;
+
+//***** GL_ARB_shader_objects *****//
+const
+  GL_PROGRAM_OBJECT_ARB = $8B40;
+  GL_OBJECT_TYPE_ARB = $8B4E;
+  GL_OBJECT_SUBTYPE_ARB = $8B4F;
+  GL_OBJECT_DELETE_STATUS_ARB = $8B80;
+  GL_OBJECT_COMPILE_STATUS_ARB = $8B81;
+  GL_OBJECT_LINK_STATUS_ARB = $8B82;
+  GL_OBJECT_VALIDATE_STATUS_ARB = $8B83;
+  GL_OBJECT_INFO_LOG_LENGTH_ARB = $8B84;
+  GL_OBJECT_ATTACHED_OBJECTS_ARB = $8B85;
+  GL_OBJECT_ACTIVE_UNIFORMS_ARB = $8B86;
+  GL_OBJECT_ACTIVE_UNIFORM_MAX_LENGTH_ARB = $8B87;
+  GL_OBJECT_SHADER_SOURCE_LENGTH_ARB = $8B88;
+  GL_SHADER_OBJECT_ARB = $8B48;
+  GL_FLOAT = $1406;
+  GL_FLOAT_VEC2_ARB = $8B50;
+  GL_FLOAT_VEC3_ARB = $8B51;
+  GL_FLOAT_VEC4_ARB = $8B52;
+  GL_INT = $1404;
+  GL_INT_VEC2_ARB = $8B53;
+  GL_INT_VEC3_ARB = $8B54;
+  GL_INT_VEC4_ARB = $8B55;
+  GL_BOOL_ARB = $8B56;
+  GL_BOOL_VEC2_ARB = $8B57;
+  GL_BOOL_VEC3_ARB = $8B58;
+  GL_BOOL_VEC4_ARB = $8B59;
+  GL_FLOAT_MAT2_ARB = $8B5A;
+  GL_FLOAT_MAT3_ARB = $8B5B;
+  GL_FLOAT_MAT4_ARB = $8B5C;
+var
+  glDeleteObjectARB: procedure(obj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetHandleARB: function(pname: GLenum): GLhandleARB; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDetachObjectARB: procedure(containerObj: GLhandleARB; attachedObj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCreateShaderObjectARB: function(shaderType: GLenum): GLhandleARB; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShaderSourceARB: procedure(shaderObj: GLhandleARB; count: GLsizei; const _string: PGLvoid; const length: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompileShaderARB: procedure(shaderObj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCreateProgramObjectARB: function(): GLhandleARB; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAttachObjectARB: procedure(containerObj: GLhandleARB; obj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLinkProgramARB: procedure(programObj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUseProgramObjectARB: procedure(programObj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glValidateProgramARB: procedure(programObj: GLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1fARB: procedure(location: GLint; v0: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2fARB: procedure(location: GLint; v0: GLfloat; v1: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3fARB: procedure(location: GLint; v0: GLfloat; v1: GLfloat; v2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4fARB: procedure(location: GLint; v0: GLfloat; v1: GLfloat; v2: GLfloat; v3: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1iARB: procedure(location: GLint; v0: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2iARB: procedure(location: GLint; v0: GLint; v1: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3iARB: procedure(location: GLint; v0: GLint; v1: GLint; v2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4iARB: procedure(location: GLint; v0: GLint; v1: GLint; v2: GLint; v3: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1fvARB: procedure(location: GLint; count: GLsizei; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2fvARB: procedure(location: GLint; count: GLsizei; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3fvARB: procedure(location: GLint; count: GLsizei; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4fvARB: procedure(location: GLint; count: GLsizei; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1ivARB: procedure(location: GLint; count: GLsizei; value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2ivARB: procedure(location: GLint; count: GLsizei; value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3ivARB: procedure(location: GLint; count: GLsizei; value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4ivARB: procedure(location: GLint; count: GLsizei; value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix2fvARB: procedure(location: GLint; count: GLsizei; transpose: GLboolean; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix3fvARB: procedure(location: GLint; count: GLsizei; transpose: GLboolean; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix4fvARB: procedure(location: GLint; count: GLsizei; transpose: GLboolean; value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetObjectParameterfvARB: procedure(obj: GLhandleARB; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetObjectParameterivARB: procedure(obj: GLhandleARB; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetInfoLogARB: procedure(obj: GLhandleARB; maxLength: GLsizei; length: PGLsizei; infoLog: PGLcharARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetAttachedObjectsARB: procedure(containerObj: GLhandleARB; maxCount: GLsizei; count: PGLsizei; obj: PGLhandleARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformLocationARB: function(programObj: GLhandleARB; const name: PGLcharARB): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetActiveUniformARB: procedure(programObj: GLhandleARB; index: GLuint; maxLength: GLsizei; length: PGLsizei; size: PGLint; _type: PGLenum; name: PGLcharARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformfvARB: procedure(programObj: GLhandleARB; location: GLint; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformivARB: procedure(programObj: GLhandleARB; location: GLint; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetShaderSourceARB: procedure(obj: GLhandleARB; maxLength: GLsizei; length: PGLsizei; source: PGLcharARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_shader_objects: Boolean;
+
+//***** GL_ARB_vertex_shader *****//
+const
+  GL_VERTEX_SHADER_ARB = $8B31;
+  GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB = $8B4A;
+  GL_MAX_VARYING_FLOATS_ARB = $8B4B;
+  // GL_MAX_VERTEX_ATTRIBS_ARB  { already defined }
+  // GL_MAX_TEXTURE_IMAGE_UNITS_ARB  { already defined }
+  GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB = $8B4C;
+  GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB = $8B4D;
+  // GL_MAX_TEXTURE_COORDS_ARB  { already defined }
+  // GL_VERTEX_PROGRAM_POINT_SIZE_ARB  { already defined }
+  // GL_VERTEX_PROGRAM_TWO_SIDE_ARB  { already defined }
+  // GL_OBJECT_TYPE_ARB  { already defined }
+  // GL_OBJECT_SUBTYPE_ARB  { already defined }
+  GL_OBJECT_ACTIVE_ATTRIBUTES_ARB = $8B89;
+  GL_OBJECT_ACTIVE_ATTRIBUTE_MAX_LENGTH_ARB = $8B8A;
+  // GL_SHADER_OBJECT_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_SIZE_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_STRIDE_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_TYPE_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_NORMALIZED_ARB  { already defined }
+  // GL_CURRENT_VERTEX_ATTRIB_ARB  { already defined }
+  // GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB  { already defined }
+  // GL_FLOAT  { already defined }
+  // GL_FLOAT_VEC2_ARB  { already defined }
+  // GL_FLOAT_VEC3_ARB  { already defined }
+  // GL_FLOAT_VEC4_ARB  { already defined }
+  // GL_FLOAT_MAT2_ARB  { already defined }
+  // GL_FLOAT_MAT3_ARB  { already defined }
+  // GL_FLOAT_MAT4_ARB  { already defined }
+  // glVertexAttrib1fARB  { already defined }
+  // glVertexAttrib1sARB  { already defined }
+  // glVertexAttrib1dARB  { already defined }
+  // glVertexAttrib2fARB  { already defined }
+  // glVertexAttrib2sARB  { already defined }
+  // glVertexAttrib2dARB  { already defined }
+  // glVertexAttrib3fARB  { already defined }
+  // glVertexAttrib3sARB  { already defined }
+  // glVertexAttrib3dARB  { already defined }
+  // glVertexAttrib4fARB  { already defined }
+  // glVertexAttrib4sARB  { already defined }
+  // glVertexAttrib4dARB  { already defined }
+  // glVertexAttrib4NubARB  { already defined }
+  // glVertexAttrib1fvARB  { already defined }
+  // glVertexAttrib1svARB  { already defined }
+  // glVertexAttrib1dvARB  { already defined }
+  // glVertexAttrib2fvARB  { already defined }
+  // glVertexAttrib2svARB  { already defined }
+  // glVertexAttrib2dvARB  { already defined }
+  // glVertexAttrib3fvARB  { already defined }
+  // glVertexAttrib3svARB  { already defined }
+  // glVertexAttrib3dvARB  { already defined }
+  // glVertexAttrib4fvARB  { already defined }
+  // glVertexAttrib4svARB  { already defined }
+  // glVertexAttrib4dvARB  { already defined }
+  // glVertexAttrib4ivARB  { already defined }
+  // glVertexAttrib4bvARB  { already defined }
+  // glVertexAttrib4ubvARB  { already defined }
+  // glVertexAttrib4usvARB  { already defined }
+  // glVertexAttrib4uivARB  { already defined }
+  // glVertexAttrib4NbvARB  { already defined }
+  // glVertexAttrib4NsvARB  { already defined }
+  // glVertexAttrib4NivARB  { already defined }
+  // glVertexAttrib4NubvARB  { already defined }
+  // glVertexAttrib4NusvARB  { already defined }
+  // glVertexAttrib4NuivARB  { already defined }
+  // glVertexAttribPointerARB  { already defined }
+  // glEnableVertexAttribArrayARB  { already defined }
+  // glDisableVertexAttribArrayARB  { already defined }
+var
+  glBindAttribLocationARB: procedure(programObj: GLhandleARB; index: GLuint; const name: PGLcharARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetActiveAttribARB: procedure(programObj: GLhandleARB; index: GLuint; maxLength: GLsizei; length: PGLsizei; size: PGLint; _type: PGLenum; name: PGLcharARB); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetAttribLocationARB: function(programObj: GLhandleARB; const name: PGLcharARB): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  // glGetVertexAttribdvARB  { already defined }
+  // glGetVertexAttribfvARB  { already defined }
+  // glGetVertexAttribivARB  { already defined }
+  // glGetVertexAttribPointervARB  { already defined }
+
+function Load_GL_ARB_vertex_shader: Boolean;
+
+//***** GL_ARB_fragment_shader *****//
+const
+  GL_FRAGMENT_SHADER_ARB = $8B30;
+  GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB = $8B49;
+  // GL_MAX_TEXTURE_COORDS_ARB  { already defined }
+  // GL_MAX_TEXTURE_IMAGE_UNITS_ARB  { already defined }
+  // GL_OBJECT_TYPE_ARB  { already defined }
+  // GL_OBJECT_SUBTYPE_ARB  { already defined }
+  // GL_SHADER_OBJECT_ARB  { already defined }
+
+function Load_GL_ARB_fragment_shader: Boolean;
+
+//***** GL_ARB_shading_language_100 *****//
+
+function Load_GL_ARB_shading_language_100: Boolean;
+
+//***** GL_ARB_texture_non_power_of_two *****//
+
+function Load_GL_ARB_texture_non_power_of_two: Boolean;
+
+//***** GL_ARB_point_sprite *****//
+const
+  GL_POINT_SPRITE_ARB = $8861;
+  GL_COORD_REPLACE_ARB = $8862;
+
+function Load_GL_ARB_point_sprite: Boolean;
+
+//***** GL_EXT_depth_bounds_test *****//
+const
+  GL_DEPTH_BOUNDS_TEST_EXT = $8890;
+  GL_DEPTH_BOUNDS_EXT = $8891;
+var
+  glDepthBoundsEXT: procedure(zmin: GLclampd; zmax: GLclampd); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_depth_bounds_test: Boolean;
+
+//***** GL_EXT_secondary_color *****//
+const
+  GL_COLOR_SUM_EXT = $8458;
+  GL_CURRENT_SECONDARY_COLOR_EXT = $8459;
+  GL_SECONDARY_COLOR_ARRAY_SIZE_EXT = $845A;
+  GL_SECONDARY_COLOR_ARRAY_TYPE_EXT = $845B;
+  GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT = $845C;
+  GL_SECONDARY_COLOR_ARRAY_POINTER_EXT = $845D;
+  GL_SECONDARY_COLOR_ARRAY_EXT = $845E;
+var
+  glSecondaryColor3bEXT: procedure(r: GLbyte; g: GLbyte; b: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3sEXT: procedure(r: GLshort; g: GLshort; b: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3iEXT: procedure(r: GLint; g: GLint; b: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3fEXT: procedure(r: GLfloat; g: GLfloat; b: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3dEXT: procedure(r: GLdouble; g: GLdouble; b: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ubEXT: procedure(r: GLubyte; g: GLubyte; b: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3usEXT: procedure(r: GLushort; g: GLushort; b: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3uiEXT: procedure(r: GLuint; g: GLuint; b: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3bvEXT: procedure(components: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3svEXT: procedure(components: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ivEXT: procedure(components: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3fvEXT: procedure(components: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3dvEXT: procedure(components: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ubvEXT: procedure(components: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3usvEXT: procedure(components: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3uivEXT: procedure(components: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColorPointerEXT: procedure(size: GLint; _type: GLenum; stride: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_secondary_color: Boolean;
+
+//***** GL_EXT_texture_mirror_clamp *****//
+const
+  GL_MIRROR_CLAMP_EXT = $8742;
+  GL_MIRROR_CLAMP_TO_EDGE_EXT = $8743;
+  GL_MIRROR_CLAMP_TO_BORDER_EXT = $8912;
+
+function Load_GL_EXT_texture_mirror_clamp: Boolean;
+
+//***** GL_EXT_blend_equation_separate *****//
+const
+  GL_BLEND_EQUATION_RGB_EXT = $8009;
+  GL_BLEND_EQUATION_ALPHA_EXT = $883D;
+var
+  glBlendEquationSeparateEXT: procedure(modeRGB: GLenum; modeAlpha: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_blend_equation_separate: Boolean;
+
+//***** GL_MESA_pack_invert *****//
+const
+  GL_PACK_INVERT_MESA = $8758;
+
+function Load_GL_MESA_pack_invert: Boolean;
+
+//***** GL_MESA_ycbcr_texture *****//
+const
+  GL_YCBCR_MESA = $8757;
+  GL_UNSIGNED_SHORT_8_8_MESA = $85BA;
+  GL_UNSIGNED_SHORT_8_8_REV_MESA = $85BB;
+
+function Load_GL_MESA_ycbcr_texture: Boolean;
+
+//***** GL_ARB_fragment_program_shadow *****//
+
+function Load_GL_ARB_fragment_program_shadow: Boolean;
+
+//***** GL_EXT_fog_coord *****//
+const
+  GL_FOG_COORDINATE_SOURCE_EXT = $8450;
+  GL_FOG_COORDINATE_EXT = $8451;
+  GL_FRAGMENT_DEPTH_EXT = $8452;
+  GL_CURRENT_FOG_COORDINATE_EXT = $8453;
+  GL_FOG_COORDINATE_ARRAY_TYPE_EXT = $8454;
+  GL_FOG_COORDINATE_ARRAY_STRIDE_EXT = $8455;
+  GL_FOG_COORDINATE_ARRAY_POINTER_EXT = $8456;
+  GL_FOG_COORDINATE_ARRAY_EXT = $8457;
+var
+  glFogCoordfEXT: procedure(coord: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoorddEXT: procedure(coord: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordfvEXT: procedure(coord: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoorddvEXT: procedure(coord: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordPointerEXT: procedure(_type: GLenum; stride: GLsizei; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_fog_coord: Boolean;
+
+//***** GL_NV_fragment_program_option *****//
+
+function Load_GL_NV_fragment_program_option: Boolean;
+
+//***** GL_EXT_pixel_buffer_object *****//
+const
+  GL_PIXEL_PACK_BUFFER_EXT = $88EB;
+  GL_PIXEL_UNPACK_BUFFER_EXT = $88EC;
+  GL_PIXEL_PACK_BUFFER_BINDING_EXT = $88ED;
+  GL_PIXEL_UNPACK_BUFFER_BINDING_EXT = $88EF;
+
+function Load_GL_EXT_pixel_buffer_object: Boolean;
+
+//***** GL_NV_fragment_program2 *****//
+const
+  GL_MAX_PROGRAM_EXEC_INSTRUCTIONS_NV = $88F4;
+  GL_MAX_PROGRAM_CALL_DEPTH_NV = $88F5;
+  GL_MAX_PROGRAM_IF_DEPTH_NV = $88F6;
+  GL_MAX_PROGRAM_LOOP_DEPTH_NV = $88F7;
+  GL_MAX_PROGRAM_LOOP_COUNT_NV = $88F8;
+
+function Load_GL_NV_fragment_program2: Boolean;
+
+//***** GL_NV_vertex_program2_option *****//
+  // GL_MAX_PROGRAM_EXEC_INSTRUCTIONS_NV  { already defined }
+  // GL_MAX_PROGRAM_CALL_DEPTH_NV  { already defined }
+
+function Load_GL_NV_vertex_program2_option: Boolean;
+
+//***** GL_NV_vertex_program3 *****//
+  // GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB  { already defined }
+
+function Load_GL_NV_vertex_program3: Boolean;
+
+//***** GL_ARB_draw_buffers *****//
+const
+  GL_MAX_DRAW_BUFFERS_ARB = $8824;
+  GL_DRAW_BUFFER0_ARB = $8825;
+  GL_DRAW_BUFFER1_ARB = $8826;
+  GL_DRAW_BUFFER2_ARB = $8827;
+  GL_DRAW_BUFFER3_ARB = $8828;
+  GL_DRAW_BUFFER4_ARB = $8829;
+  GL_DRAW_BUFFER5_ARB = $882A;
+  GL_DRAW_BUFFER6_ARB = $882B;
+  GL_DRAW_BUFFER7_ARB = $882C;
+  GL_DRAW_BUFFER8_ARB = $882D;
+  GL_DRAW_BUFFER9_ARB = $882E;
+  GL_DRAW_BUFFER10_ARB = $882F;
+  GL_DRAW_BUFFER11_ARB = $8830;
+  GL_DRAW_BUFFER12_ARB = $8831;
+  GL_DRAW_BUFFER13_ARB = $8832;
+  GL_DRAW_BUFFER14_ARB = $8833;
+  GL_DRAW_BUFFER15_ARB = $8834;
+var
+  glDrawBuffersARB: procedure(n: GLsizei; const bufs: PGLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_draw_buffers: Boolean;
+
+//***** GL_ARB_texture_rectangle *****//
+const
+  GL_TEXTURE_RECTANGLE_ARB = $84F5;
+  GL_TEXTURE_BINDING_RECTANGLE_ARB = $84F6;
+  GL_PROXY_TEXTURE_RECTANGLE_ARB = $84F7;
+  GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB = $84F8;
+
+function Load_GL_ARB_texture_rectangle: Boolean;
+
+//***** GL_ARB_color_buffer_float *****//
+const
+  GL_RGBA_FLOAT_MODE_ARB = $8820;
+  GL_CLAMP_VERTEX_COLOR_ARB = $891A;
+  GL_CLAMP_FRAGMENT_COLOR_ARB = $891B;
+  GL_CLAMP_READ_COLOR_ARB = $891C;
+  GL_FIXED_ONLY_ARB = $891D;
+  WGL_TYPE_RGBA_FLOAT_ARB = $21A0;
+var
+  glClampColorARB: procedure(target: GLenum; clamp: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_ARB_color_buffer_float: Boolean;
+
+//***** GL_ARB_half_float_pixel *****//
+const
+  GL_HALF_FLOAT_ARB = $140B;
+
+function Load_GL_ARB_half_float_pixel: Boolean;
+
+//***** GL_ARB_texture_float *****//
+const
+  GL_TEXTURE_RED_TYPE_ARB = $8C10;
+  GL_TEXTURE_GREEN_TYPE_ARB = $8C11;
+  GL_TEXTURE_BLUE_TYPE_ARB = $8C12;
+  GL_TEXTURE_ALPHA_TYPE_ARB = $8C13;
+  GL_TEXTURE_LUMINANCE_TYPE_ARB = $8C14;
+  GL_TEXTURE_INTENSITY_TYPE_ARB = $8C15;
+  GL_TEXTURE_DEPTH_TYPE_ARB = $8C16;
+  GL_UNSIGNED_NORMALIZED_ARB = $8C17;
+  GL_RGBA32F_ARB = $8814;
+  GL_RGB32F_ARB = $8815;
+  GL_ALPHA32F_ARB = $8816;
+  GL_INTENSITY32F_ARB = $8817;
+  GL_LUMINANCE32F_ARB = $8818;
+  GL_LUMINANCE_ALPHA32F_ARB = $8819;
+  GL_RGBA16F_ARB = $881A;
+  GL_RGB16F_ARB = $881B;
+  GL_ALPHA16F_ARB = $881C;
+  GL_INTENSITY16F_ARB = $881D;
+  GL_LUMINANCE16F_ARB = $881E;
+  GL_LUMINANCE_ALPHA16F_ARB = $881F;
+
+function Load_GL_ARB_texture_float: Boolean;
+
+//***** GL_EXT_texture_compression_dxt1 *****//
+  // GL_COMPRESSED_RGB_S3TC_DXT1_EXT  { already defined }
+  // GL_COMPRESSED_RGBA_S3TC_DXT1_EXT  { already defined }
+
+function Load_GL_EXT_texture_compression_dxt1: Boolean;
+
+//***** GL_ARB_pixel_buffer_object *****//
+const
+  GL_PIXEL_PACK_BUFFER_ARB = $88EB;
+  GL_PIXEL_UNPACK_BUFFER_ARB = $88EC;
+  GL_PIXEL_PACK_BUFFER_BINDING_ARB = $88ED;
+  GL_PIXEL_UNPACK_BUFFER_BINDING_ARB = $88EF;
+
+function Load_GL_ARB_pixel_buffer_object: Boolean;
+
+//***** GL_EXT_framebuffer_object *****//
+const
+  GL_FRAMEBUFFER_EXT = $8D40;
+  GL_RENDERBUFFER_EXT = $8D41;
+  GL_STENCIL_INDEX_EXT = $8D45;
+  GL_STENCIL_INDEX1_EXT = $8D46;
+  GL_STENCIL_INDEX4_EXT = $8D47;
+  GL_STENCIL_INDEX8_EXT = $8D48;
+  GL_STENCIL_INDEX16_EXT = $8D49;
+  GL_RENDERBUFFER_WIDTH_EXT = $8D42;
+  GL_RENDERBUFFER_HEIGHT_EXT = $8D43;
+  GL_RENDERBUFFER_INTERNAL_FORMAT_EXT = $8D44;
+  GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT = $8CD0;
+  GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT = $8CD1;
+  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT = $8CD2;
+  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT = $8CD3;
+  GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT = $8CD4;
+  GL_COLOR_ATTACHMENT0_EXT = $8CE0;
+  GL_COLOR_ATTACHMENT1_EXT = $8CE1;
+  GL_COLOR_ATTACHMENT2_EXT = $8CE2;
+  GL_COLOR_ATTACHMENT3_EXT = $8CE3;
+  GL_COLOR_ATTACHMENT4_EXT = $8CE4;
+  GL_COLOR_ATTACHMENT5_EXT = $8CE5;
+  GL_COLOR_ATTACHMENT6_EXT = $8CE6;
+  GL_COLOR_ATTACHMENT7_EXT = $8CE7;
+  GL_COLOR_ATTACHMENT8_EXT = $8CE8;
+  GL_COLOR_ATTACHMENT9_EXT = $8CE9;
+  GL_COLOR_ATTACHMENT10_EXT = $8CEA;
+  GL_COLOR_ATTACHMENT11_EXT = $8CEB;
+  GL_COLOR_ATTACHMENT12_EXT = $8CEC;
+  GL_COLOR_ATTACHMENT13_EXT = $8CED;
+  GL_COLOR_ATTACHMENT14_EXT = $8CEE;
+  GL_COLOR_ATTACHMENT15_EXT = $8CEF;
+  GL_DEPTH_ATTACHMENT_EXT = $8D00;
+  GL_STENCIL_ATTACHMENT_EXT = $8D20;
+  GL_FRAMEBUFFER_COMPLETE_EXT = $8CD5;
+  GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT = $8CD6;
+  GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT = $8CD7;
+  GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT = $8CD8;
+  GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT = $8CD9;
+  GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT = $8CDA;
+  GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT = $8CDB;
+  GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT = $8CDC;
+  GL_FRAMEBUFFER_UNSUPPORTED_EXT = $8CDD;
+  GL_FRAMEBUFFER_STATUS_ERROR_EXT = $8CDE;
+  GL_FRAMEBUFFER_BINDING_EXT = $8CA6;
+  GL_RENDERBUFFER_BINDING_EXT = $8CA7;
+  GL_MAX_COLOR_ATTACHMENTS_EXT = $8CDF;
+  GL_MAX_RENDERBUFFER_SIZE_EXT = $84E8;
+  GL_INVALID_FRAMEBUFFER_OPERATION_EXT = $0506;
+var
+  glIsRenderbufferEXT: function(renderbuffer: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindRenderbufferEXT: procedure(target: GLenum; renderbuffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteRenderbuffersEXT: procedure(n: GLsizei; const renderbuffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenRenderbuffersEXT: procedure(n: GLsizei; renderbuffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glRenderbufferStorageEXT: procedure(target: GLenum; internalformat: GLenum; width: GLsizei; height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetRenderbufferParameterivEXT: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsFramebufferEXT: function(framebuffer: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindFramebufferEXT: procedure(target: GLenum; framebuffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteFramebuffersEXT: procedure(n: GLsizei; const framebuffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenFramebuffersEXT: procedure(n: GLsizei; framebuffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCheckFramebufferStatusEXT: function(target: GLenum): GLenum; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFramebufferTexture1DEXT: procedure(target: GLenum; attachment: GLenum; textarget: GLenum; texture: GLuint; level: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFramebufferTexture2DEXT: procedure(target: GLenum; attachment: GLenum; textarget: GLenum; texture: GLuint; level: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFramebufferTexture3DEXT: procedure(target: GLenum; attachment: GLenum; textarget: GLenum; texture: GLuint; level: GLint; zoffset: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFramebufferRenderbufferEXT: procedure(target: GLenum; attachment: GLenum; renderbuffertarget: GLenum; renderbuffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFramebufferAttachmentParameterivEXT: procedure(target: GLenum; attachment: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenerateMipmapEXT: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_EXT_framebuffer_object: Boolean;
+
+//***** GL_version_1_4 *****//
+const
+  GL_BLEND_DST_RGB = $80C8;
+  GL_BLEND_SRC_RGB = $80C9;
+  GL_BLEND_DST_ALPHA = $80CA;
+  GL_BLEND_SRC_ALPHA = $80CB;
+  GL_POINT_SIZE_MIN = $8126;
+  GL_POINT_SIZE_MAX = $8127;
+  GL_POINT_FADE_THRESHOLD_SIZE = $8128;
+  GL_POINT_DISTANCE_ATTENUATION = $8129;
+  GL_GENERATE_MIPMAP = $8191;
+  GL_GENERATE_MIPMAP_HINT = $8192;
+  GL_DEPTH_COMPONENT16 = $81A5;
+  GL_DEPTH_COMPONENT24 = $81A6;
+  GL_DEPTH_COMPONENT32 = $81A7;
+  GL_MIRRORED_REPEAT = $8370;
+  GL_FOG_COORDINATE_SOURCE = $8450;
+  GL_FOG_COORDINATE = $8451;
+  GL_FRAGMENT_DEPTH = $8452;
+  GL_CURRENT_FOG_COORDINATE = $8453;
+  GL_FOG_COORDINATE_ARRAY_TYPE = $8454;
+  GL_FOG_COORDINATE_ARRAY_STRIDE = $8455;
+  GL_FOG_COORDINATE_ARRAY_POINTER = $8456;
+  GL_FOG_COORDINATE_ARRAY = $8457;
+  GL_COLOR_SUM = $8458;
+  GL_CURRENT_SECONDARY_COLOR = $8459;
+  GL_SECONDARY_COLOR_ARRAY_SIZE = $845A;
+  GL_SECONDARY_COLOR_ARRAY_TYPE = $845B;
+  GL_SECONDARY_COLOR_ARRAY_STRIDE = $845C;
+  GL_SECONDARY_COLOR_ARRAY_POINTER = $845D;
+  GL_SECONDARY_COLOR_ARRAY = $845E;
+  GL_MAX_TEXTURE_LOD_BIAS = $84FD;
+  GL_TEXTURE_FILTER_CONTROL = $8500;
+  GL_TEXTURE_LOD_BIAS = $8501;
+  GL_INCR_WRAP = $8507;
+  GL_DECR_WRAP = $8508;
+  GL_TEXTURE_DEPTH_SIZE = $884A;
+  GL_DEPTH_TEXTURE_MODE = $884B;
+  GL_TEXTURE_COMPARE_MODE = $884C;
+  GL_TEXTURE_COMPARE_FUNC = $884D;
+  GL_COMPARE_R_TO_TEXTURE = $884E;
+var
+  glBlendFuncSeparate: procedure(sfactorRGB: GLenum; dfactorRGB: GLenum; sfactorAlpha: GLenum; dfactorAlpha: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordf: procedure(coord: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordfv: procedure(const coord: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordd: procedure(coord: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoorddv: procedure(const coord: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogCoordPointer: procedure(_type: GLenum; stride: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawArrays: procedure(mode: GLenum; first: PGLint; count: PGLsizei; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultiDrawElements: procedure(mode: GLenum; const count: PGLsizei; _type: GLenum; const indices: PGLvoid; primcount: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameterf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameterfv: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameteri: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointParameteriv: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3b: procedure(red: GLbyte; green: GLbyte; blue: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3bv: procedure(const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3d: procedure(red: GLdouble; green: GLdouble; blue: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3f: procedure(red: GLfloat; green: GLfloat; blue: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3i: procedure(red: GLint; green: GLint; blue: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3s: procedure(red: GLshort; green: GLshort; blue: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ub: procedure(red: GLubyte; green: GLubyte; blue: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ubv: procedure(const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3ui: procedure(red: GLuint; green: GLuint; blue: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3uiv: procedure(const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3us: procedure(red: GLushort; green: GLushort; blue: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColor3usv: procedure(const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSecondaryColorPointer: procedure(size: GLint; _type: GLenum; stride: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2d: procedure(x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2f: procedure(x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2i: procedure(x: GLint; y: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2s: procedure(x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos2sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3d: procedure(x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3f: procedure(x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3i: procedure(x: GLint; y: GLint; z: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3s: procedure(x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glWindowPos3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_version_1_4: Boolean;
+
+//***** GL_version_1_5 *****//
+const
+  GL_BUFFER_SIZE = $8764;
+  GL_BUFFER_USAGE = $8765;
+  GL_QUERY_COUNTER_BITS = $8864;
+  GL_CURRENT_QUERY = $8865;
+  GL_QUERY_RESULT = $8866;
+  GL_QUERY_RESULT_AVAILABLE = $8867;
+  GL_ARRAY_BUFFER = $8892;
+  GL_ELEMENT_ARRAY_BUFFER = $8893;
+  GL_ARRAY_BUFFER_BINDING = $8894;
+  GL_ELEMENT_ARRAY_BUFFER_BINDING = $8895;
+  GL_VERTEX_ARRAY_BUFFER_BINDING = $8896;
+  GL_NORMAL_ARRAY_BUFFER_BINDING = $8897;
+  GL_COLOR_ARRAY_BUFFER_BINDING = $8898;
+  GL_INDEX_ARRAY_BUFFER_BINDING = $8899;
+  GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING = $889A;
+  GL_EDGE_FLAG_ARRAY_BUFFER_BINDING = $889B;
+  GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING = $889C;
+  GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING = $889D;
+  GL_WEIGHT_ARRAY_BUFFER_BINDING = $889E;
+  GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = $889F;
+  GL_READ_ONLY = $88B8;
+  GL_WRITE_ONLY = $88B9;
+  GL_READ_WRITE = $88BA;
+  GL_BUFFER_ACCESS = $88BB;
+  GL_BUFFER_MAPPED = $88BC;
+  GL_BUFFER_MAP_POINTER = $88BD;
+  GL_STREAM_DRAW = $88E0;
+  GL_STREAM_READ = $88E1;
+  GL_STREAM_COPY = $88E2;
+  GL_STATIC_DRAW = $88E4;
+  GL_STATIC_READ = $88E5;
+  GL_STATIC_COPY = $88E6;
+  GL_DYNAMIC_DRAW = $88E8;
+  GL_DYNAMIC_READ = $88E9;
+  GL_DYNAMIC_COPY = $88EA;
+  GL_SAMPLES_PASSED = $8914;
+  GL_FOG_COORD_SRC = $8450;
+  GL_FOG_COORD = $8451;
+  GL_CURRENT_FOG_COORD = $8453;
+  GL_FOG_COORD_ARRAY_TYPE = $8454;
+  GL_FOG_COORD_ARRAY_STRIDE = $8455;
+  GL_FOG_COORD_ARRAY_POINTER = $8456;
+  GL_FOG_COORD_ARRAY = $8457;
+  GL_FOG_COORD_ARRAY_BUFFER_BINDING = $889D;
+  GL_SRC0_RGB = $8580;
+  GL_SRC1_RGB = $8581;
+  GL_SRC2_RGB = $8582;
+  GL_SRC0_ALPHA = $8588;
+  GL_SRC1_ALPHA = $8589;
+  GL_SRC2_ALPHA = $858A;
+var
+  glGenQueries: procedure(n: GLsizei; ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteQueries: procedure(n: GLsizei; const ids: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsQuery: function(id: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBeginQuery: procedure(target: GLenum; id: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEndQuery: procedure(target: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryiv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryObjectiv: procedure(id: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetQueryObjectuiv: procedure(id: GLuint; pname: GLenum; params: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindBuffer: procedure(target: GLenum; buffer: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteBuffers: procedure(n: GLsizei; const buffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenBuffers: procedure(n: GLsizei; buffers: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsBuffer: function(buffer: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBufferData: procedure(target: GLenum; size: GLsizeiptr; const data: PGLvoid; usage: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBufferSubData: procedure(target: GLenum; offset: GLintptr; size: GLsizeiptr; const data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferSubData: procedure(target: GLenum; offset: GLintptr; size: GLsizeiptr; data: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapBuffer: function(target: GLenum; access: GLenum): PGLvoid; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUnmapBuffer: function(target: GLenum): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferParameteriv: procedure(target: GLenum; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBufferPointerv: procedure(target: GLenum; pname: GLenum; params: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_version_1_5: Boolean;
+
+//***** GL_version_2_0 *****//
+const
+  GL_BLEND_EQUATION_RGB = $8009;
+  GL_VERTEX_ATTRIB_ARRAY_ENABLED = $8622;
+  GL_VERTEX_ATTRIB_ARRAY_SIZE = $8623;
+  GL_VERTEX_ATTRIB_ARRAY_STRIDE = $8624;
+  GL_VERTEX_ATTRIB_ARRAY_TYPE = $8625;
+  GL_CURRENT_VERTEX_ATTRIB = $8626;
+  GL_VERTEX_PROGRAM_POINT_SIZE = $8642;
+  GL_VERTEX_PROGRAM_TWO_SIDE = $8643;
+  GL_VERTEX_ATTRIB_ARRAY_POINTER = $8645;
+  GL_STENCIL_BACK_FUNC = $8800;
+  GL_STENCIL_BACK_FAIL = $8801;
+  GL_STENCIL_BACK_PASS_DEPTH_FAIL = $8802;
+  GL_STENCIL_BACK_PASS_DEPTH_PASS = $8803;
+  GL_MAX_DRAW_BUFFERS = $8824;
+  GL_DRAW_BUFFER0 = $8825;
+  GL_DRAW_BUFFER1 = $8826;
+  GL_DRAW_BUFFER2 = $8827;
+  GL_DRAW_BUFFER3 = $8828;
+  GL_DRAW_BUFFER4 = $8829;
+  GL_DRAW_BUFFER5 = $882A;
+  GL_DRAW_BUFFER6 = $882B;
+  GL_DRAW_BUFFER7 = $882C;
+  GL_DRAW_BUFFER8 = $882D;
+  GL_DRAW_BUFFER9 = $882E;
+  GL_DRAW_BUFFER10 = $882F;
+  GL_DRAW_BUFFER11 = $8830;
+  GL_DRAW_BUFFER12 = $8831;
+  GL_DRAW_BUFFER13 = $8832;
+  GL_DRAW_BUFFER14 = $8833;
+  GL_DRAW_BUFFER15 = $8834;
+  GL_BLEND_EQUATION_ALPHA = $883D;
+  GL_POINT_SPRITE = $8861;
+  GL_COORD_REPLACE = $8862;
+  GL_MAX_VERTEX_ATTRIBS = $8869;
+  GL_VERTEX_ATTRIB_ARRAY_NORMALIZED = $886A;
+  GL_MAX_TEXTURE_COORDS = $8871;
+  GL_MAX_TEXTURE_IMAGE_UNITS = $8872;
+  GL_FRAGMENT_SHADER = $8B30;
+  GL_VERTEX_SHADER = $8B31;
+  GL_MAX_FRAGMENT_UNIFORM_COMPONENTS = $8B49;
+  GL_MAX_VERTEX_UNIFORM_COMPONENTS = $8B4A;
+  GL_MAX_VARYING_FLOATS = $8B4B;
+  GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS = $8B4C;
+  GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = $8B4D;
+  GL_SHADER_TYPE = $8B4F;
+  GL_FLOAT_VEC2 = $8B50;
+  GL_FLOAT_VEC3 = $8B51;
+  GL_FLOAT_VEC4 = $8B52;
+  GL_INT_VEC2 = $8B53;
+  GL_INT_VEC3 = $8B54;
+  GL_INT_VEC4 = $8B55;
+  GL_BOOL = $8B56;
+  GL_BOOL_VEC2 = $8B57;
+  GL_BOOL_VEC3 = $8B58;
+  GL_BOOL_VEC4 = $8B59;
+  GL_FLOAT_MAT2 = $8B5A;
+  GL_FLOAT_MAT3 = $8B5B;
+  GL_FLOAT_MAT4 = $8B5C;
+  GL_SAMPLER_1D = $8B5D;
+  GL_SAMPLER_2D = $8B5E;
+  GL_SAMPLER_3D = $8B5F;
+  GL_SAMPLER_CUBE = $8B60;
+  GL_SAMPLER_1D_SHADOW = $8B61;
+  GL_SAMPLER_2D_SHADOW = $8B62;
+  GL_DELETE_STATUS = $8B80;
+  GL_COMPILE_STATUS = $8B81;
+  GL_LINK_STATUS = $8B82;
+  GL_VALIDATE_STATUS = $8B83;
+  GL_INFO_LOG_LENGTH = $8B84;
+  GL_ATTACHED_SHADERS = $8B85;
+  GL_ACTIVE_UNIFORMS = $8B86;
+  GL_ACTIVE_UNIFORM_MAX_LENGTH = $8B87;
+  GL_SHADER_SOURCE_LENGTH = $8B88;
+  GL_ACTIVE_ATTRIBUTES = $8B89;
+  GL_ACTIVE_ATTRIBUTE_MAX_LENGTH = $8B8A;
+  GL_FRAGMENT_SHADER_DERIVATIVE_HINT = $8B8B;
+  GL_SHADING_LANGUAGE_VERSION = $8B8C;
+  GL_CURRENT_PROGRAM = $8B8D;
+  GL_POINT_SPRITE_COORD_ORIGIN = $8CA0;
+  GL_LOWER_LEFT = $8CA1;
+  GL_UPPER_LEFT = $8CA2;
+  GL_STENCIL_BACK_REF = $8CA3;
+  GL_STENCIL_BACK_VALUE_MASK = $8CA4;
+  GL_STENCIL_BACK_WRITEMASK = $8CA5;
+var
+  glBlendEquationSeparate: procedure(modeRGB: GLenum; modeAlpha: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawBuffers: procedure(n: GLsizei; const bufs: PGLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilOpSeparate: procedure(face: GLenum; sfail: GLenum; dpfail: GLenum; dppass: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilFuncSeparate: procedure(frontfunc: GLenum; backfunc: GLenum; ref: GLint; mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilMaskSeparate: procedure(face: GLenum; mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAttachShader: procedure(_program: GLuint; shader: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBindAttribLocation: procedure(_program: GLuint; index: GLuint; const name: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCompileShader: procedure(shader: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCreateProgram: function(): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCreateShader: function(_type: GLenum): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteProgram: procedure(_program: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteShader: procedure(shader: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDetachShader: procedure(_program: GLuint; shader: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDisableVertexAttribArray: procedure(index: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEnableVertexAttribArray: procedure(index: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetActiveAttrib: procedure(_program: GLuint; index: GLuint; bufSize: GLsizei; length: PGLsizei; size: PGLint; _type: PGLenum; name: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetActiveUniform: procedure(_program: GLuint; index: GLuint; bufSize: GLsizei; length: PGLsizei; size: PGLint; _type: PGLenum; name: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetAttachedShaders: procedure(_program: GLuint; maxCount: GLsizei; count: PGLsizei; obj: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetAttribLocation: function(_program: GLuint; const name: PGLchar): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramiv: procedure(_program: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetProgramInfoLog: procedure(_program: GLuint; bufSize: GLsizei; length: PGLsizei; infoLog: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetShaderiv: procedure(shader: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetShaderInfoLog: procedure(shader: GLuint; bufSize: GLsizei; length: PGLsizei; infoLog: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetShaderSource: procedure(shader: GLuint; bufSize: GLsizei; length: PGLsizei; source: PGLchar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformLocation: function(_program: GLuint; const name: PGLchar): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformfv: procedure(_program: GLuint; location: GLint; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetUniformiv: procedure(_program: GLuint; location: GLint; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribdv: procedure(index: GLuint; pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribfv: procedure(index: GLuint; pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribiv: procedure(index: GLuint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetVertexAttribPointerv: procedure(index: GLuint; pname: GLenum; pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsProgram: function(_program: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsShader: function(shader: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLinkProgram: procedure(_program: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glShaderSource: procedure(shader: GLuint; count: GLsizei; const _string: PGLchar; const length: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUseProgram: procedure(_program: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1f: procedure(location: GLint; v0: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2f: procedure(location: GLint; v0: GLfloat; v1: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3f: procedure(location: GLint; v0: GLfloat; v1: GLfloat; v2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4f: procedure(location: GLint; v0: GLfloat; v1: GLfloat; v2: GLfloat; v3: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1i: procedure(location: GLint; v0: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2i: procedure(location: GLint; v0: GLint; v1: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3i: procedure(location: GLint; v0: GLint; v1: GLint; v2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4i: procedure(location: GLint; v0: GLint; v1: GLint; v2: GLint; v3: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1fv: procedure(location: GLint; count: GLsizei; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2fv: procedure(location: GLint; count: GLsizei; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3fv: procedure(location: GLint; count: GLsizei; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4fv: procedure(location: GLint; count: GLsizei; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform1iv: procedure(location: GLint; count: GLsizei; const value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform2iv: procedure(location: GLint; count: GLsizei; const value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform3iv: procedure(location: GLint; count: GLsizei; const value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniform4iv: procedure(location: GLint; count: GLsizei; const value: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix2fv: procedure(location: GLint; count: GLsizei; transpose: GLboolean; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix3fv: procedure(location: GLint; count: GLsizei; transpose: GLboolean; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glUniformMatrix4fv: procedure(location: GLint; count: GLsizei; transpose: GLboolean; const value: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glValidateProgram: procedure(_program: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1d: procedure(index: GLuint; x: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1dv: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1f: procedure(index: GLuint; x: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1fv: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1s: procedure(index: GLuint; x: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib1sv: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2d: procedure(index: GLuint; x: GLdouble; y: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2dv: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2f: procedure(index: GLuint; x: GLfloat; y: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2fv: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2s: procedure(index: GLuint; x: GLshort; y: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib2sv: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3d: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3dv: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3f: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3fv: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3s: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib3sv: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nbv: procedure(index: GLuint; const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Niv: procedure(index: GLuint; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nsv: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nub: procedure(index: GLuint; x: GLubyte; y: GLubyte; z: GLubyte; w: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nubv: procedure(index: GLuint; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nuiv: procedure(index: GLuint; const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4Nusv: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4bv: procedure(index: GLuint; const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4d: procedure(index: GLuint; x: GLdouble; y: GLdouble; z: GLdouble; w: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4dv: procedure(index: GLuint; const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4f: procedure(index: GLuint; x: GLfloat; y: GLfloat; z: GLfloat; w: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4fv: procedure(index: GLuint; const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4iv: procedure(index: GLuint; const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4s: procedure(index: GLuint; x: GLshort; y: GLshort; z: GLshort; w: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4sv: procedure(index: GLuint; const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4ubv: procedure(index: GLuint; const v: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4uiv: procedure(index: GLuint; const v: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttrib4usv: procedure(index: GLuint; const v: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexAttribPointer: procedure(index: GLuint; size: GLint; _type: GLenum; normalized: GLboolean; stride: GLsizei; const pointer: PGLvoid); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+function Load_GL_version_2_0: Boolean;
+
+implementation
+
+uses
+  sdl;
+
+function glext_ExtensionSupported(const extension: PChar; const searchIn: PChar): Boolean;
+var
+  extensions: PChar;
+  start: PChar;
+  where, terminator: PChar;
+begin
+
+  if (Pos(' ', extension) <> 0) or (extension = '') then
+  begin
+    Result := false;
+    Exit;
+  end;
+
+  if searchIn = '' then
+    extensions := glGetString(GL_EXTENSIONS)
+  else
+    //StrLCopy(extensions, searchIn, StrLen(searchIn) + 1);
+    extensions := searchIn;
+  start := extensions;
+  while true do
+  begin
+    where := StrPos(start, extension);
+    if where = nil then
+      Break;
+    terminator := where + Length(extension);
+    if (where = start) or ((where - 1)^ = ' ') then
+    begin
+      if (terminator^ = ' ') or (terminator^ = #0) then
+      begin
+	Result := true;
+	Exit;
+      end;
+    end;
+    start := terminator;
+  end;
+  Result := false;
+
+end;
+
+function Load_GL_version_1_2: Boolean;
+{var
+  extstring : PChar;}
+begin
+
+  Result := FALSE;
+  //extstring := glGetString( GL_EXTENSIONS );
+
+  @glCopyTexSubImage3D := SDL_GL_GetProcAddress('glCopyTexSubImage3D');
+  if not Assigned(glCopyTexSubImage3D) then Exit;
+  @glDrawRangeElements := SDL_GL_GetProcAddress('glDrawRangeElements');
+  if not Assigned(glDrawRangeElements) then Exit;
+  @glTexImage3D := SDL_GL_GetProcAddress('glTexImage3D');
+  if not Assigned(glTexImage3D) then Exit;
+  @glTexSubImage3D := SDL_GL_GetProcAddress('glTexSubImage3D');
+  if not Assigned(glTexSubImage3D) then Exit;
+    
+  Result := TRUE;
+
+end;
+
+function Load_GL_ARB_imaging: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_imaging', extstring) then
+  begin
+    @glColorTable := SDL_GL_GetProcAddress('glColorTable');
+    if not Assigned(glColorTable) then Exit;
+    @glColorTableParameterfv := SDL_GL_GetProcAddress('glColorTableParameterfv');
+    if not Assigned(glColorTableParameterfv) then Exit;
+    @glColorTableParameteriv := SDL_GL_GetProcAddress('glColorTableParameteriv');
+    if not Assigned(glColorTableParameteriv) then Exit;
+    @glCopyColorTable := SDL_GL_GetProcAddress('glCopyColorTable');
+    if not Assigned(glCopyColorTable) then Exit;
+    @glGetColorTable := SDL_GL_GetProcAddress('glGetColorTable');
+    if not Assigned(glGetColorTable) then Exit;
+    @glGetColorTableParameterfv := SDL_GL_GetProcAddress('glGetColorTableParameterfv');
+    if not Assigned(glGetColorTableParameterfv) then Exit;
+    @glGetColorTableParameteriv := SDL_GL_GetProcAddress('glGetColorTableParameteriv');
+    if not Assigned(glGetColorTableParameteriv) then Exit;
+    @glColorSubTable := SDL_GL_GetProcAddress('glColorSubTable');
+    if not Assigned(glColorSubTable) then Exit;
+    @glCopyColorSubTable := SDL_GL_GetProcAddress('glCopyColorSubTable');
+    if not Assigned(glCopyColorSubTable) then Exit;
+    @glConvolutionFilter1D := SDL_GL_GetProcAddress('glConvolutionFilter1D');
+    if not Assigned(glConvolutionFilter1D) then Exit;
+    @glConvolutionFilter2D := SDL_GL_GetProcAddress('glConvolutionFilter2D');
+    if not Assigned(glConvolutionFilter2D) then Exit;
+    @glConvolutionParameterf := SDL_GL_GetProcAddress('glConvolutionParameterf');
+    if not Assigned(glConvolutionParameterf) then Exit;
+    @glConvolutionParameterfv := SDL_GL_GetProcAddress('glConvolutionParameterfv');
+    if not Assigned(glConvolutionParameterfv) then Exit;
+    @glConvolutionParameteri := SDL_GL_GetProcAddress('glConvolutionParameteri');
+    if not Assigned(glConvolutionParameteri) then Exit;
+    @glConvolutionParameteriv := SDL_GL_GetProcAddress('glConvolutionParameteriv');
+    if not Assigned(glConvolutionParameteriv) then Exit;
+    @glCopyConvolutionFilter1D := SDL_GL_GetProcAddress('glCopyConvolutionFilter1D');
+    if not Assigned(glCopyConvolutionFilter1D) then Exit;
+    @glCopyConvolutionFilter2D := SDL_GL_GetProcAddress('glCopyConvolutionFilter2D');
+    if not Assigned(glCopyConvolutionFilter2D) then Exit;
+    @glGetConvolutionFilter := SDL_GL_GetProcAddress('glGetConvolutionFilter');
+    if not Assigned(glGetConvolutionFilter) then Exit;
+    @glGetConvolutionParameterfv := SDL_GL_GetProcAddress('glGetConvolutionParameterfv');
+    if not Assigned(glGetConvolutionParameterfv) then Exit;
+    @glGetConvolutionParameteriv := SDL_GL_GetProcAddress('glGetConvolutionParameteriv');
+    if not Assigned(glGetConvolutionParameteriv) then Exit;
+    @glGetSeparableFilter := SDL_GL_GetProcAddress('glGetSeparableFilter');
+    if not Assigned(glGetSeparableFilter) then Exit;
+    @glSeparableFilter2D := SDL_GL_GetProcAddress('glSeparableFilter2D');
+    if not Assigned(glSeparableFilter2D) then Exit;
+    @glGetHistogram := SDL_GL_GetProcAddress('glGetHistogram');
+    if not Assigned(glGetHistogram) then Exit;
+    @glGetHistogramParameterfv := SDL_GL_GetProcAddress('glGetHistogramParameterfv');
+    if not Assigned(glGetHistogramParameterfv) then Exit;
+    @glGetHistogramParameteriv := SDL_GL_GetProcAddress('glGetHistogramParameteriv');
+    if not Assigned(glGetHistogramParameteriv) then Exit;
+    @glGetMinmax := SDL_GL_GetProcAddress('glGetMinmax');
+    if not Assigned(glGetMinmax) then Exit;
+    @glGetMinmaxParameterfv := SDL_GL_GetProcAddress('glGetMinmaxParameterfv');
+    if not Assigned(glGetMinmaxParameterfv) then Exit;
+    @glGetMinmaxParameteriv := SDL_GL_GetProcAddress('glGetMinmaxParameteriv');
+    if not Assigned(glGetMinmaxParameteriv) then Exit;
+    @glHistogram := SDL_GL_GetProcAddress('glHistogram');
+    if not Assigned(glHistogram) then Exit;
+    @glMinmax := SDL_GL_GetProcAddress('glMinmax');
+    if not Assigned(glMinmax) then Exit;
+    @glResetHistogram := SDL_GL_GetProcAddress('glResetHistogram');
+    if not Assigned(glResetHistogram) then Exit;
+    @glResetMinmax := SDL_GL_GetProcAddress('glResetMinmax');
+    if not Assigned(glResetMinmax) then Exit;
+    @glBlendEquation := SDL_GL_GetProcAddress('glBlendEquation');
+    if not Assigned(glBlendEquation) then Exit;
+    @glBlendColor := SDL_GL_GetProcAddress('glBlendColor');
+    if not Assigned(glBlendColor) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_version_1_3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+    @glActiveTexture := SDL_GL_GetProcAddress('glActiveTexture');
+    if not Assigned(glActiveTexture) then Exit;
+    @glClientActiveTexture := SDL_GL_GetProcAddress('glClientActiveTexture');
+    if not Assigned(glClientActiveTexture) then Exit;
+    @glMultiTexCoord1d := SDL_GL_GetProcAddress('glMultiTexCoord1d');
+    if not Assigned(glMultiTexCoord1d) then Exit;
+    @glMultiTexCoord1dv := SDL_GL_GetProcAddress('glMultiTexCoord1dv');
+    if not Assigned(glMultiTexCoord1dv) then Exit;
+    @glMultiTexCoord1f := SDL_GL_GetProcAddress('glMultiTexCoord1f');
+    if not Assigned(glMultiTexCoord1f) then Exit;
+    @glMultiTexCoord1fv := SDL_GL_GetProcAddress('glMultiTexCoord1fv');
+    if not Assigned(glMultiTexCoord1fv) then Exit;
+    @glMultiTexCoord1i := SDL_GL_GetProcAddress('glMultiTexCoord1i');
+    if not Assigned(glMultiTexCoord1i) then Exit;
+    @glMultiTexCoord1iv := SDL_GL_GetProcAddress('glMultiTexCoord1iv');
+    if not Assigned(glMultiTexCoord1iv) then Exit;
+    @glMultiTexCoord1s := SDL_GL_GetProcAddress('glMultiTexCoord1s');
+    if not Assigned(glMultiTexCoord1s) then Exit;
+    @glMultiTexCoord1sv := SDL_GL_GetProcAddress('glMultiTexCoord1sv');
+    if not Assigned(glMultiTexCoord1sv) then Exit;
+    @glMultiTexCoord2d := SDL_GL_GetProcAddress('glMultiTexCoord2d');
+    if not Assigned(glMultiTexCoord2d) then Exit;
+    @glMultiTexCoord2dv := SDL_GL_GetProcAddress('glMultiTexCoord2dv');
+    if not Assigned(glMultiTexCoord2dv) then Exit;
+    @glMultiTexCoord2f := SDL_GL_GetProcAddress('glMultiTexCoord2f');
+    if not Assigned(glMultiTexCoord2f) then Exit;
+    @glMultiTexCoord2fv := SDL_GL_GetProcAddress('glMultiTexCoord2fv');
+    if not Assigned(glMultiTexCoord2fv) then Exit;
+    @glMultiTexCoord2i := SDL_GL_GetProcAddress('glMultiTexCoord2i');
+    if not Assigned(glMultiTexCoord2i) then Exit;
+    @glMultiTexCoord2iv := SDL_GL_GetProcAddress('glMultiTexCoord2iv');
+    if not Assigned(glMultiTexCoord2iv) then Exit;
+    @glMultiTexCoord2s := SDL_GL_GetProcAddress('glMultiTexCoord2s');
+    if not Assigned(glMultiTexCoord2s) then Exit;
+    @glMultiTexCoord2sv := SDL_GL_GetProcAddress('glMultiTexCoord2sv');
+    if not Assigned(glMultiTexCoord2sv) then Exit;
+    @glMultiTexCoord3d := SDL_GL_GetProcAddress('glMultiTexCoord3d');
+    if not Assigned(glMultiTexCoord3d) then Exit;
+    @glMultiTexCoord3dv := SDL_GL_GetProcAddress('glMultiTexCoord3dv');
+    if not Assigned(glMultiTexCoord3dv) then Exit;
+    @glMultiTexCoord3f := SDL_GL_GetProcAddress('glMultiTexCoord3f');
+    if not Assigned(glMultiTexCoord3f) then Exit;
+    @glMultiTexCoord3fv := SDL_GL_GetProcAddress('glMultiTexCoord3fv');
+    if not Assigned(glMultiTexCoord3fv) then Exit;
+    @glMultiTexCoord3i := SDL_GL_GetProcAddress('glMultiTexCoord3i');
+    if not Assigned(glMultiTexCoord3i) then Exit;
+    @glMultiTexCoord3iv := SDL_GL_GetProcAddress('glMultiTexCoord3iv');
+    if not Assigned(glMultiTexCoord3iv) then Exit;
+    @glMultiTexCoord3s := SDL_GL_GetProcAddress('glMultiTexCoord3s');
+    if not Assigned(glMultiTexCoord3s) then Exit;
+    @glMultiTexCoord3sv := SDL_GL_GetProcAddress('glMultiTexCoord3sv');
+    if not Assigned(glMultiTexCoord3sv) then Exit;
+    @glMultiTexCoord4d := SDL_GL_GetProcAddress('glMultiTexCoord4d');
+    if not Assigned(glMultiTexCoord4d) then Exit;
+    @glMultiTexCoord4dv := SDL_GL_GetProcAddress('glMultiTexCoord4dv');
+    if not Assigned(glMultiTexCoord4dv) then Exit;
+    @glMultiTexCoord4f := SDL_GL_GetProcAddress('glMultiTexCoord4f');
+    if not Assigned(glMultiTexCoord4f) then Exit;
+    @glMultiTexCoord4fv := SDL_GL_GetProcAddress('glMultiTexCoord4fv');
+    if not Assigned(glMultiTexCoord4fv) then Exit;
+    @glMultiTexCoord4i := SDL_GL_GetProcAddress('glMultiTexCoord4i');
+    if not Assigned(glMultiTexCoord4i) then Exit;
+    @glMultiTexCoord4iv := SDL_GL_GetProcAddress('glMultiTexCoord4iv');
+    if not Assigned(glMultiTexCoord4iv) then Exit;
+    @glMultiTexCoord4s := SDL_GL_GetProcAddress('glMultiTexCoord4s');
+    if not Assigned(glMultiTexCoord4s) then Exit;
+    @glMultiTexCoord4sv := SDL_GL_GetProcAddress('glMultiTexCoord4sv');
+    if not Assigned(glMultiTexCoord4sv) then Exit;
+    @glLoadTransposeMatrixf := SDL_GL_GetProcAddress('glLoadTransposeMatrixf');
+    if not Assigned(glLoadTransposeMatrixf) then Exit;
+    @glLoadTransposeMatrixd := SDL_GL_GetProcAddress('glLoadTransposeMatrixd');
+    if not Assigned(glLoadTransposeMatrixd) then Exit;
+    @glMultTransposeMatrixf := SDL_GL_GetProcAddress('glMultTransposeMatrixf');
+    if not Assigned(glMultTransposeMatrixf) then Exit;
+    @glMultTransposeMatrixd := SDL_GL_GetProcAddress('glMultTransposeMatrixd');
+    if not Assigned(glMultTransposeMatrixd) then Exit;
+    @glSampleCoverage := SDL_GL_GetProcAddress('glSampleCoverage');
+    if not Assigned(glSampleCoverage) then Exit;
+    @glCompressedTexImage3D := SDL_GL_GetProcAddress('glCompressedTexImage3D');
+    if not Assigned(glCompressedTexImage3D) then Exit;
+    @glCompressedTexImage2D := SDL_GL_GetProcAddress('glCompressedTexImage2D');
+    if not Assigned(glCompressedTexImage2D) then Exit;
+    @glCompressedTexImage1D := SDL_GL_GetProcAddress('glCompressedTexImage1D');
+    if not Assigned(glCompressedTexImage1D) then Exit;
+    @glCompressedTexSubImage3D := SDL_GL_GetProcAddress('glCompressedTexSubImage3D');
+    if not Assigned(glCompressedTexSubImage3D) then Exit;
+    @glCompressedTexSubImage2D := SDL_GL_GetProcAddress('glCompressedTexSubImage2D');
+    if not Assigned(glCompressedTexSubImage2D) then Exit;
+    @glCompressedTexSubImage1D := SDL_GL_GetProcAddress('glCompressedTexSubImage1D');
+    if not Assigned(glCompressedTexSubImage1D) then Exit;
+    @glGetCompressedTexImage := SDL_GL_GetProcAddress('glGetCompressedTexImage');
+    if not Assigned(glGetCompressedTexImage) then Exit;
+    Result := TRUE;
+
+end;
+
+function Load_GL_ARB_multitexture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_multitexture', extstring) then
+  begin
+    @glActiveTextureARB := SDL_GL_GetProcAddress('glActiveTextureARB');
+    if not Assigned(glActiveTextureARB) then Exit;
+    @glClientActiveTextureARB := SDL_GL_GetProcAddress('glClientActiveTextureARB');
+    if not Assigned(glClientActiveTextureARB) then Exit;
+    @glMultiTexCoord1dARB := SDL_GL_GetProcAddress('glMultiTexCoord1dARB');
+    if not Assigned(glMultiTexCoord1dARB) then Exit;
+    @glMultiTexCoord1dvARB := SDL_GL_GetProcAddress('glMultiTexCoord1dvARB');
+    if not Assigned(glMultiTexCoord1dvARB) then Exit;
+    @glMultiTexCoord1fARB := SDL_GL_GetProcAddress('glMultiTexCoord1fARB');
+    if not Assigned(glMultiTexCoord1fARB) then Exit;
+    @glMultiTexCoord1fvARB := SDL_GL_GetProcAddress('glMultiTexCoord1fvARB');
+    if not Assigned(glMultiTexCoord1fvARB) then Exit;
+    @glMultiTexCoord1iARB := SDL_GL_GetProcAddress('glMultiTexCoord1iARB');
+    if not Assigned(glMultiTexCoord1iARB) then Exit;
+    @glMultiTexCoord1ivARB := SDL_GL_GetProcAddress('glMultiTexCoord1ivARB');
+    if not Assigned(glMultiTexCoord1ivARB) then Exit;
+    @glMultiTexCoord1sARB := SDL_GL_GetProcAddress('glMultiTexCoord1sARB');
+    if not Assigned(glMultiTexCoord1sARB) then Exit;
+    @glMultiTexCoord1svARB := SDL_GL_GetProcAddress('glMultiTexCoord1svARB');
+    if not Assigned(glMultiTexCoord1svARB) then Exit;
+    @glMultiTexCoord2dARB := SDL_GL_GetProcAddress('glMultiTexCoord2dARB');
+    if not Assigned(glMultiTexCoord2dARB) then Exit;
+    @glMultiTexCoord2dvARB := SDL_GL_GetProcAddress('glMultiTexCoord2dvARB');
+    if not Assigned(glMultiTexCoord2dvARB) then Exit;
+    @glMultiTexCoord2fARB := SDL_GL_GetProcAddress('glMultiTexCoord2fARB');
+    if not Assigned(glMultiTexCoord2fARB) then Exit;
+    @glMultiTexCoord2fvARB := SDL_GL_GetProcAddress('glMultiTexCoord2fvARB');
+    if not Assigned(glMultiTexCoord2fvARB) then Exit;
+    @glMultiTexCoord2iARB := SDL_GL_GetProcAddress('glMultiTexCoord2iARB');
+    if not Assigned(glMultiTexCoord2iARB) then Exit;
+    @glMultiTexCoord2ivARB := SDL_GL_GetProcAddress('glMultiTexCoord2ivARB');
+    if not Assigned(glMultiTexCoord2ivARB) then Exit;
+    @glMultiTexCoord2sARB := SDL_GL_GetProcAddress('glMultiTexCoord2sARB');
+    if not Assigned(glMultiTexCoord2sARB) then Exit;
+    @glMultiTexCoord2svARB := SDL_GL_GetProcAddress('glMultiTexCoord2svARB');
+    if not Assigned(glMultiTexCoord2svARB) then Exit;
+    @glMultiTexCoord3dARB := SDL_GL_GetProcAddress('glMultiTexCoord3dARB');
+    if not Assigned(glMultiTexCoord3dARB) then Exit;
+    @glMultiTexCoord3dvARB := SDL_GL_GetProcAddress('glMultiTexCoord3dvARB');
+    if not Assigned(glMultiTexCoord3dvARB) then Exit;
+    @glMultiTexCoord3fARB := SDL_GL_GetProcAddress('glMultiTexCoord3fARB');
+    if not Assigned(glMultiTexCoord3fARB) then Exit;
+    @glMultiTexCoord3fvARB := SDL_GL_GetProcAddress('glMultiTexCoord3fvARB');
+    if not Assigned(glMultiTexCoord3fvARB) then Exit;
+    @glMultiTexCoord3iARB := SDL_GL_GetProcAddress('glMultiTexCoord3iARB');
+    if not Assigned(glMultiTexCoord3iARB) then Exit;
+    @glMultiTexCoord3ivARB := SDL_GL_GetProcAddress('glMultiTexCoord3ivARB');
+    if not Assigned(glMultiTexCoord3ivARB) then Exit;
+    @glMultiTexCoord3sARB := SDL_GL_GetProcAddress('glMultiTexCoord3sARB');
+    if not Assigned(glMultiTexCoord3sARB) then Exit;
+    @glMultiTexCoord3svARB := SDL_GL_GetProcAddress('glMultiTexCoord3svARB');
+    if not Assigned(glMultiTexCoord3svARB) then Exit;
+    @glMultiTexCoord4dARB := SDL_GL_GetProcAddress('glMultiTexCoord4dARB');
+    if not Assigned(glMultiTexCoord4dARB) then Exit;
+    @glMultiTexCoord4dvARB := SDL_GL_GetProcAddress('glMultiTexCoord4dvARB');
+    if not Assigned(glMultiTexCoord4dvARB) then Exit;
+    @glMultiTexCoord4fARB := SDL_GL_GetProcAddress('glMultiTexCoord4fARB');
+    if not Assigned(glMultiTexCoord4fARB) then Exit;
+    @glMultiTexCoord4fvARB := SDL_GL_GetProcAddress('glMultiTexCoord4fvARB');
+    if not Assigned(glMultiTexCoord4fvARB) then Exit;
+    @glMultiTexCoord4iARB := SDL_GL_GetProcAddress('glMultiTexCoord4iARB');
+    if not Assigned(glMultiTexCoord4iARB) then Exit;
+    @glMultiTexCoord4ivARB := SDL_GL_GetProcAddress('glMultiTexCoord4ivARB');
+    if not Assigned(glMultiTexCoord4ivARB) then Exit;
+    @glMultiTexCoord4sARB := SDL_GL_GetProcAddress('glMultiTexCoord4sARB');
+    if not Assigned(glMultiTexCoord4sARB) then Exit;
+    @glMultiTexCoord4svARB := SDL_GL_GetProcAddress('glMultiTexCoord4svARB');
+    if not Assigned(glMultiTexCoord4svARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_transpose_matrix: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_transpose_matrix', extstring) then
+  begin
+    @glLoadTransposeMatrixfARB := SDL_GL_GetProcAddress('glLoadTransposeMatrixfARB');
+    if not Assigned(glLoadTransposeMatrixfARB) then Exit;
+    @glLoadTransposeMatrixdARB := SDL_GL_GetProcAddress('glLoadTransposeMatrixdARB');
+    if not Assigned(glLoadTransposeMatrixdARB) then Exit;
+    @glMultTransposeMatrixfARB := SDL_GL_GetProcAddress('glMultTransposeMatrixfARB');
+    if not Assigned(glMultTransposeMatrixfARB) then Exit;
+    @glMultTransposeMatrixdARB := SDL_GL_GetProcAddress('glMultTransposeMatrixdARB');
+    if not Assigned(glMultTransposeMatrixdARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_multisample: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_multisample', extstring) then
+  begin
+    @glSampleCoverageARB := SDL_GL_GetProcAddress('glSampleCoverageARB');
+    if not Assigned(glSampleCoverageARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_env_add: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_env_add', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+{$IFDEF WINDOWS}
+function Load_WGL_ARB_extensions_string: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_extensions_string', extstring) then
+  begin
+    @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+    if not Assigned(wglGetExtensionsStringARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_ARB_buffer_region: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_buffer_region', extstring) then
+  begin
+    @wglCreateBufferRegionARB := SDL_GL_GetProcAddress('wglCreateBufferRegionARB');
+    if not Assigned(wglCreateBufferRegionARB) then Exit;
+    @wglDeleteBufferRegionARB := SDL_GL_GetProcAddress('wglDeleteBufferRegionARB');
+    if not Assigned(wglDeleteBufferRegionARB) then Exit;
+    @wglSaveBufferRegionARB := SDL_GL_GetProcAddress('wglSaveBufferRegionARB');
+    if not Assigned(wglSaveBufferRegionARB) then Exit;
+    @wglRestoreBufferRegionARB := SDL_GL_GetProcAddress('wglRestoreBufferRegionARB');
+    if not Assigned(wglRestoreBufferRegionARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+{$ENDIF}
+
+function Load_GL_ARB_texture_cube_map: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_cube_map', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_depth_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_depth_texture', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_point_parameters: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_point_parameters', extstring) then
+  begin
+    @glPointParameterfARB := SDL_GL_GetProcAddress('glPointParameterfARB');
+    if not Assigned(glPointParameterfARB) then Exit;
+    @glPointParameterfvARB := SDL_GL_GetProcAddress('glPointParameterfvARB');
+    if not Assigned(glPointParameterfvARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_shadow: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_shadow', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_shadow_ambient: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_shadow_ambient', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_border_clamp: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_border_clamp', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_compression: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_compression', extstring) then
+  begin
+    @glCompressedTexImage3DARB := SDL_GL_GetProcAddress('glCompressedTexImage3DARB');
+    if not Assigned(glCompressedTexImage3DARB) then Exit;
+    @glCompressedTexImage2DARB := SDL_GL_GetProcAddress('glCompressedTexImage2DARB');
+    if not Assigned(glCompressedTexImage2DARB) then Exit;
+    @glCompressedTexImage1DARB := SDL_GL_GetProcAddress('glCompressedTexImage1DARB');
+    if not Assigned(glCompressedTexImage1DARB) then Exit;
+    @glCompressedTexSubImage3DARB := SDL_GL_GetProcAddress('glCompressedTexSubImage3DARB');
+    if not Assigned(glCompressedTexSubImage3DARB) then Exit;
+    @glCompressedTexSubImage2DARB := SDL_GL_GetProcAddress('glCompressedTexSubImage2DARB');
+    if not Assigned(glCompressedTexSubImage2DARB) then Exit;
+    @glCompressedTexSubImage1DARB := SDL_GL_GetProcAddress('glCompressedTexSubImage1DARB');
+    if not Assigned(glCompressedTexSubImage1DARB) then Exit;
+    @glGetCompressedTexImageARB := SDL_GL_GetProcAddress('glGetCompressedTexImageARB');
+    if not Assigned(glGetCompressedTexImageARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_env_combine: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_env_combine', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_env_crossbar: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_env_crossbar', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_env_dot3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_env_dot3', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_mirrored_repeat: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_mirrored_repeat', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_vertex_blend: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_vertex_blend', extstring) then
+  begin
+    @glWeightbvARB := SDL_GL_GetProcAddress('glWeightbvARB');
+    if not Assigned(glWeightbvARB) then Exit;
+    @glWeightsvARB := SDL_GL_GetProcAddress('glWeightsvARB');
+    if not Assigned(glWeightsvARB) then Exit;
+    @glWeightivARB := SDL_GL_GetProcAddress('glWeightivARB');
+    if not Assigned(glWeightivARB) then Exit;
+    @glWeightfvARB := SDL_GL_GetProcAddress('glWeightfvARB');
+    if not Assigned(glWeightfvARB) then Exit;
+    @glWeightdvARB := SDL_GL_GetProcAddress('glWeightdvARB');
+    if not Assigned(glWeightdvARB) then Exit;
+    @glWeightvARB := SDL_GL_GetProcAddress('glWeightvARB');
+    if not Assigned(glWeightvARB) then Exit;
+    @glWeightubvARB := SDL_GL_GetProcAddress('glWeightubvARB');
+    if not Assigned(glWeightubvARB) then Exit;
+    @glWeightusvARB := SDL_GL_GetProcAddress('glWeightusvARB');
+    if not Assigned(glWeightusvARB) then Exit;
+    @glWeightuivARB := SDL_GL_GetProcAddress('glWeightuivARB');
+    if not Assigned(glWeightuivARB) then Exit;
+    @glWeightPointerARB := SDL_GL_GetProcAddress('glWeightPointerARB');
+    if not Assigned(glWeightPointerARB) then Exit;
+    @glVertexBlendARB := SDL_GL_GetProcAddress('glVertexBlendARB');
+    if not Assigned(glVertexBlendARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_vertex_program: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_vertex_program', extstring) then
+  begin
+    @glVertexAttrib1sARB := SDL_GL_GetProcAddress('glVertexAttrib1sARB');
+    if not Assigned(glVertexAttrib1sARB) then Exit;
+    @glVertexAttrib1fARB := SDL_GL_GetProcAddress('glVertexAttrib1fARB');
+    if not Assigned(glVertexAttrib1fARB) then Exit;
+    @glVertexAttrib1dARB := SDL_GL_GetProcAddress('glVertexAttrib1dARB');
+    if not Assigned(glVertexAttrib1dARB) then Exit;
+    @glVertexAttrib2sARB := SDL_GL_GetProcAddress('glVertexAttrib2sARB');
+    if not Assigned(glVertexAttrib2sARB) then Exit;
+    @glVertexAttrib2fARB := SDL_GL_GetProcAddress('glVertexAttrib2fARB');
+    if not Assigned(glVertexAttrib2fARB) then Exit;
+    @glVertexAttrib2dARB := SDL_GL_GetProcAddress('glVertexAttrib2dARB');
+    if not Assigned(glVertexAttrib2dARB) then Exit;
+    @glVertexAttrib3sARB := SDL_GL_GetProcAddress('glVertexAttrib3sARB');
+    if not Assigned(glVertexAttrib3sARB) then Exit;
+    @glVertexAttrib3fARB := SDL_GL_GetProcAddress('glVertexAttrib3fARB');
+    if not Assigned(glVertexAttrib3fARB) then Exit;
+    @glVertexAttrib3dARB := SDL_GL_GetProcAddress('glVertexAttrib3dARB');
+    if not Assigned(glVertexAttrib3dARB) then Exit;
+    @glVertexAttrib4sARB := SDL_GL_GetProcAddress('glVertexAttrib4sARB');
+    if not Assigned(glVertexAttrib4sARB) then Exit;
+    @glVertexAttrib4fARB := SDL_GL_GetProcAddress('glVertexAttrib4fARB');
+    if not Assigned(glVertexAttrib4fARB) then Exit;
+    @glVertexAttrib4dARB := SDL_GL_GetProcAddress('glVertexAttrib4dARB');
+    if not Assigned(glVertexAttrib4dARB) then Exit;
+    @glVertexAttrib4NubARB := SDL_GL_GetProcAddress('glVertexAttrib4NubARB');
+    if not Assigned(glVertexAttrib4NubARB) then Exit;
+    @glVertexAttrib1svARB := SDL_GL_GetProcAddress('glVertexAttrib1svARB');
+    if not Assigned(glVertexAttrib1svARB) then Exit;
+    @glVertexAttrib1fvARB := SDL_GL_GetProcAddress('glVertexAttrib1fvARB');
+    if not Assigned(glVertexAttrib1fvARB) then Exit;
+    @glVertexAttrib1dvARB := SDL_GL_GetProcAddress('glVertexAttrib1dvARB');
+    if not Assigned(glVertexAttrib1dvARB) then Exit;
+    @glVertexAttrib2svARB := SDL_GL_GetProcAddress('glVertexAttrib2svARB');
+    if not Assigned(glVertexAttrib2svARB) then Exit;
+    @glVertexAttrib2fvARB := SDL_GL_GetProcAddress('glVertexAttrib2fvARB');
+    if not Assigned(glVertexAttrib2fvARB) then Exit;
+    @glVertexAttrib2dvARB := SDL_GL_GetProcAddress('glVertexAttrib2dvARB');
+    if not Assigned(glVertexAttrib2dvARB) then Exit;
+    @glVertexAttrib3svARB := SDL_GL_GetProcAddress('glVertexAttrib3svARB');
+    if not Assigned(glVertexAttrib3svARB) then Exit;
+    @glVertexAttrib3fvARB := SDL_GL_GetProcAddress('glVertexAttrib3fvARB');
+    if not Assigned(glVertexAttrib3fvARB) then Exit;
+    @glVertexAttrib3dvARB := SDL_GL_GetProcAddress('glVertexAttrib3dvARB');
+    if not Assigned(glVertexAttrib3dvARB) then Exit;
+    @glVertexAttrib4bvARB := SDL_GL_GetProcAddress('glVertexAttrib4bvARB');
+    if not Assigned(glVertexAttrib4bvARB) then Exit;
+    @glVertexAttrib4svARB := SDL_GL_GetProcAddress('glVertexAttrib4svARB');
+    if not Assigned(glVertexAttrib4svARB) then Exit;
+    @glVertexAttrib4ivARB := SDL_GL_GetProcAddress('glVertexAttrib4ivARB');
+    if not Assigned(glVertexAttrib4ivARB) then Exit;
+    @glVertexAttrib4ubvARB := SDL_GL_GetProcAddress('glVertexAttrib4ubvARB');
+    if not Assigned(glVertexAttrib4ubvARB) then Exit;
+    @glVertexAttrib4usvARB := SDL_GL_GetProcAddress('glVertexAttrib4usvARB');
+    if not Assigned(glVertexAttrib4usvARB) then Exit;
+    @glVertexAttrib4uivARB := SDL_GL_GetProcAddress('glVertexAttrib4uivARB');
+    if not Assigned(glVertexAttrib4uivARB) then Exit;
+    @glVertexAttrib4fvARB := SDL_GL_GetProcAddress('glVertexAttrib4fvARB');
+    if not Assigned(glVertexAttrib4fvARB) then Exit;
+    @glVertexAttrib4dvARB := SDL_GL_GetProcAddress('glVertexAttrib4dvARB');
+    if not Assigned(glVertexAttrib4dvARB) then Exit;
+    @glVertexAttrib4NbvARB := SDL_GL_GetProcAddress('glVertexAttrib4NbvARB');
+    if not Assigned(glVertexAttrib4NbvARB) then Exit;
+    @glVertexAttrib4NsvARB := SDL_GL_GetProcAddress('glVertexAttrib4NsvARB');
+    if not Assigned(glVertexAttrib4NsvARB) then Exit;
+    @glVertexAttrib4NivARB := SDL_GL_GetProcAddress('glVertexAttrib4NivARB');
+    if not Assigned(glVertexAttrib4NivARB) then Exit;
+    @glVertexAttrib4NubvARB := SDL_GL_GetProcAddress('glVertexAttrib4NubvARB');
+    if not Assigned(glVertexAttrib4NubvARB) then Exit;
+    @glVertexAttrib4NusvARB := SDL_GL_GetProcAddress('glVertexAttrib4NusvARB');
+    if not Assigned(glVertexAttrib4NusvARB) then Exit;
+    @glVertexAttrib4NuivARB := SDL_GL_GetProcAddress('glVertexAttrib4NuivARB');
+    if not Assigned(glVertexAttrib4NuivARB) then Exit;
+    @glVertexAttribPointerARB := SDL_GL_GetProcAddress('glVertexAttribPointerARB');
+    if not Assigned(glVertexAttribPointerARB) then Exit;
+    @glEnableVertexAttribArrayARB := SDL_GL_GetProcAddress('glEnableVertexAttribArrayARB');
+    if not Assigned(glEnableVertexAttribArrayARB) then Exit;
+    @glDisableVertexAttribArrayARB := SDL_GL_GetProcAddress('glDisableVertexAttribArrayARB');
+    if not Assigned(glDisableVertexAttribArrayARB) then Exit;
+    @glProgramStringARB := SDL_GL_GetProcAddress('glProgramStringARB');
+    if not Assigned(glProgramStringARB) then Exit;
+    @glBindProgramARB := SDL_GL_GetProcAddress('glBindProgramARB');
+    if not Assigned(glBindProgramARB) then Exit;
+    @glDeleteProgramsARB := SDL_GL_GetProcAddress('glDeleteProgramsARB');
+    if not Assigned(glDeleteProgramsARB) then Exit;
+    @glGenProgramsARB := SDL_GL_GetProcAddress('glGenProgramsARB');
+    if not Assigned(glGenProgramsARB) then Exit;
+    @glProgramEnvParameter4dARB := SDL_GL_GetProcAddress('glProgramEnvParameter4dARB');
+    if not Assigned(glProgramEnvParameter4dARB) then Exit;
+    @glProgramEnvParameter4dvARB := SDL_GL_GetProcAddress('glProgramEnvParameter4dvARB');
+    if not Assigned(glProgramEnvParameter4dvARB) then Exit;
+    @glProgramEnvParameter4fARB := SDL_GL_GetProcAddress('glProgramEnvParameter4fARB');
+    if not Assigned(glProgramEnvParameter4fARB) then Exit;
+    @glProgramEnvParameter4fvARB := SDL_GL_GetProcAddress('glProgramEnvParameter4fvARB');
+    if not Assigned(glProgramEnvParameter4fvARB) then Exit;
+    @glProgramLocalParameter4dARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dARB');
+    if not Assigned(glProgramLocalParameter4dARB) then Exit;
+    @glProgramLocalParameter4dvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dvARB');
+    if not Assigned(glProgramLocalParameter4dvARB) then Exit;
+    @glProgramLocalParameter4fARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fARB');
+    if not Assigned(glProgramLocalParameter4fARB) then Exit;
+    @glProgramLocalParameter4fvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fvARB');
+    if not Assigned(glProgramLocalParameter4fvARB) then Exit;
+    @glGetProgramEnvParameterdvARB := SDL_GL_GetProcAddress('glGetProgramEnvParameterdvARB');
+    if not Assigned(glGetProgramEnvParameterdvARB) then Exit;
+    @glGetProgramEnvParameterfvARB := SDL_GL_GetProcAddress('glGetProgramEnvParameterfvARB');
+    if not Assigned(glGetProgramEnvParameterfvARB) then Exit;
+    @glGetProgramLocalParameterdvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterdvARB');
+    if not Assigned(glGetProgramLocalParameterdvARB) then Exit;
+    @glGetProgramLocalParameterfvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterfvARB');
+    if not Assigned(glGetProgramLocalParameterfvARB) then Exit;
+    @glGetProgramivARB := SDL_GL_GetProcAddress('glGetProgramivARB');
+    if not Assigned(glGetProgramivARB) then Exit;
+    @glGetProgramStringARB := SDL_GL_GetProcAddress('glGetProgramStringARB');
+    if not Assigned(glGetProgramStringARB) then Exit;
+    @glGetVertexAttribdvARB := SDL_GL_GetProcAddress('glGetVertexAttribdvARB');
+    if not Assigned(glGetVertexAttribdvARB) then Exit;
+    @glGetVertexAttribfvARB := SDL_GL_GetProcAddress('glGetVertexAttribfvARB');
+    if not Assigned(glGetVertexAttribfvARB) then Exit;
+    @glGetVertexAttribivARB := SDL_GL_GetProcAddress('glGetVertexAttribivARB');
+    if not Assigned(glGetVertexAttribivARB) then Exit;
+    @glGetVertexAttribPointervARB := SDL_GL_GetProcAddress('glGetVertexAttribPointervARB');
+    if not Assigned(glGetVertexAttribPointervARB) then Exit;
+    @glIsProgramARB := SDL_GL_GetProcAddress('glIsProgramARB');
+    if not Assigned(glIsProgramARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_window_pos: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_window_pos', extstring) then
+  begin
+    @glWindowPos2dARB := SDL_GL_GetProcAddress('glWindowPos2dARB');
+    if not Assigned(glWindowPos2dARB) then Exit;
+    @glWindowPos2fARB := SDL_GL_GetProcAddress('glWindowPos2fARB');
+    if not Assigned(glWindowPos2fARB) then Exit;
+    @glWindowPos2iARB := SDL_GL_GetProcAddress('glWindowPos2iARB');
+    if not Assigned(glWindowPos2iARB) then Exit;
+    @glWindowPos2sARB := SDL_GL_GetProcAddress('glWindowPos2sARB');
+    if not Assigned(glWindowPos2sARB) then Exit;
+    @glWindowPos2dvARB := SDL_GL_GetProcAddress('glWindowPos2dvARB');
+    if not Assigned(glWindowPos2dvARB) then Exit;
+    @glWindowPos2fvARB := SDL_GL_GetProcAddress('glWindowPos2fvARB');
+    if not Assigned(glWindowPos2fvARB) then Exit;
+    @glWindowPos2ivARB := SDL_GL_GetProcAddress('glWindowPos2ivARB');
+    if not Assigned(glWindowPos2ivARB) then Exit;
+    @glWindowPos2svARB := SDL_GL_GetProcAddress('glWindowPos2svARB');
+    if not Assigned(glWindowPos2svARB) then Exit;
+    @glWindowPos3dARB := SDL_GL_GetProcAddress('glWindowPos3dARB');
+    if not Assigned(glWindowPos3dARB) then Exit;
+    @glWindowPos3fARB := SDL_GL_GetProcAddress('glWindowPos3fARB');
+    if not Assigned(glWindowPos3fARB) then Exit;
+    @glWindowPos3iARB := SDL_GL_GetProcAddress('glWindowPos3iARB');
+    if not Assigned(glWindowPos3iARB) then Exit;
+    @glWindowPos3sARB := SDL_GL_GetProcAddress('glWindowPos3sARB');
+    if not Assigned(glWindowPos3sARB) then Exit;
+    @glWindowPos3dvARB := SDL_GL_GetProcAddress('glWindowPos3dvARB');
+    if not Assigned(glWindowPos3dvARB) then Exit;
+    @glWindowPos3fvARB := SDL_GL_GetProcAddress('glWindowPos3fvARB');
+    if not Assigned(glWindowPos3fvARB) then Exit;
+    @glWindowPos3ivARB := SDL_GL_GetProcAddress('glWindowPos3ivARB');
+    if not Assigned(glWindowPos3ivARB) then Exit;
+    @glWindowPos3svARB := SDL_GL_GetProcAddress('glWindowPos3svARB');
+    if not Assigned(glWindowPos3svARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_422_pixels: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_422_pixels', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_abgr: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_abgr', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_bgra: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_bgra', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_color: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_color', extstring) then
+  begin
+    @glBlendColorEXT := SDL_GL_GetProcAddress('glBlendColorEXT');
+    if not Assigned(glBlendColorEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_func_separate: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_func_separate', extstring) then
+  begin
+    @glBlendFuncSeparateEXT := SDL_GL_GetProcAddress('glBlendFuncSeparateEXT');
+    if not Assigned(glBlendFuncSeparateEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_logic_op: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_logic_op', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_minmax: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_minmax', extstring) then
+  begin
+    @glBlendEquationEXT := SDL_GL_GetProcAddress('glBlendEquationEXT');
+    if not Assigned(glBlendEquationEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_subtract: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_subtract', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_clip_volume_hint: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_clip_volume_hint', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_color_subtable: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_color_subtable', extstring) then
+  begin
+    @glColorSubTableEXT := SDL_GL_GetProcAddress('glColorSubTableEXT');
+    if not Assigned(glColorSubTableEXT) then Exit;
+    @glCopyColorSubTableEXT := SDL_GL_GetProcAddress('glCopyColorSubTableEXT');
+    if not Assigned(glCopyColorSubTableEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_compiled_vertex_array: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_compiled_vertex_array', extstring) then
+  begin
+    @glLockArraysEXT := SDL_GL_GetProcAddress('glLockArraysEXT');
+    if not Assigned(glLockArraysEXT) then Exit;
+    @glUnlockArraysEXT := SDL_GL_GetProcAddress('glUnlockArraysEXT');
+    if not Assigned(glUnlockArraysEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_convolution: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_convolution', extstring) then
+  begin
+    @glConvolutionFilter1DEXT := SDL_GL_GetProcAddress('glConvolutionFilter1DEXT');
+    if not Assigned(glConvolutionFilter1DEXT) then Exit;
+    @glConvolutionFilter2DEXT := SDL_GL_GetProcAddress('glConvolutionFilter2DEXT');
+    if not Assigned(glConvolutionFilter2DEXT) then Exit;
+    @glCopyConvolutionFilter1DEXT := SDL_GL_GetProcAddress('glCopyConvolutionFilter1DEXT');
+    if not Assigned(glCopyConvolutionFilter1DEXT) then Exit;
+    @glCopyConvolutionFilter2DEXT := SDL_GL_GetProcAddress('glCopyConvolutionFilter2DEXT');
+    if not Assigned(glCopyConvolutionFilter2DEXT) then Exit;
+    @glGetConvolutionFilterEXT := SDL_GL_GetProcAddress('glGetConvolutionFilterEXT');
+    if not Assigned(glGetConvolutionFilterEXT) then Exit;
+    @glSeparableFilter2DEXT := SDL_GL_GetProcAddress('glSeparableFilter2DEXT');
+    if not Assigned(glSeparableFilter2DEXT) then Exit;
+    @glGetSeparableFilterEXT := SDL_GL_GetProcAddress('glGetSeparableFilterEXT');
+    if not Assigned(glGetSeparableFilterEXT) then Exit;
+    @glConvolutionParameteriEXT := SDL_GL_GetProcAddress('glConvolutionParameteriEXT');
+    if not Assigned(glConvolutionParameteriEXT) then Exit;
+    @glConvolutionParameterivEXT := SDL_GL_GetProcAddress('glConvolutionParameterivEXT');
+    if not Assigned(glConvolutionParameterivEXT) then Exit;
+    @glConvolutionParameterfEXT := SDL_GL_GetProcAddress('glConvolutionParameterfEXT');
+    if not Assigned(glConvolutionParameterfEXT) then Exit;
+    @glConvolutionParameterfvEXT := SDL_GL_GetProcAddress('glConvolutionParameterfvEXT');
+    if not Assigned(glConvolutionParameterfvEXT) then Exit;
+    @glGetConvolutionParameterivEXT := SDL_GL_GetProcAddress('glGetConvolutionParameterivEXT');
+    if not Assigned(glGetConvolutionParameterivEXT) then Exit;
+    @glGetConvolutionParameterfvEXT := SDL_GL_GetProcAddress('glGetConvolutionParameterfvEXT');
+    if not Assigned(glGetConvolutionParameterfvEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_histogram: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_histogram', extstring) then
+  begin
+    @glHistogramEXT := SDL_GL_GetProcAddress('glHistogramEXT');
+    if not Assigned(glHistogramEXT) then Exit;
+    @glResetHistogramEXT := SDL_GL_GetProcAddress('glResetHistogramEXT');
+    if not Assigned(glResetHistogramEXT) then Exit;
+    @glGetHistogramEXT := SDL_GL_GetProcAddress('glGetHistogramEXT');
+    if not Assigned(glGetHistogramEXT) then Exit;
+    @glGetHistogramParameterivEXT := SDL_GL_GetProcAddress('glGetHistogramParameterivEXT');
+    if not Assigned(glGetHistogramParameterivEXT) then Exit;
+    @glGetHistogramParameterfvEXT := SDL_GL_GetProcAddress('glGetHistogramParameterfvEXT');
+    if not Assigned(glGetHistogramParameterfvEXT) then Exit;
+    @glMinmaxEXT := SDL_GL_GetProcAddress('glMinmaxEXT');
+    if not Assigned(glMinmaxEXT) then Exit;
+    @glResetMinmaxEXT := SDL_GL_GetProcAddress('glResetMinmaxEXT');
+    if not Assigned(glResetMinmaxEXT) then Exit;
+    @glGetMinmaxEXT := SDL_GL_GetProcAddress('glGetMinmaxEXT');
+    if not Assigned(glGetMinmaxEXT) then Exit;
+    @glGetMinmaxParameterivEXT := SDL_GL_GetProcAddress('glGetMinmaxParameterivEXT');
+    if not Assigned(glGetMinmaxParameterivEXT) then Exit;
+    @glGetMinmaxParameterfvEXT := SDL_GL_GetProcAddress('glGetMinmaxParameterfvEXT');
+    if not Assigned(glGetMinmaxParameterfvEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_multi_draw_arrays: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_multi_draw_arrays', extstring) then
+  begin
+    @glMultiDrawArraysEXT := SDL_GL_GetProcAddress('glMultiDrawArraysEXT');
+    if not Assigned(glMultiDrawArraysEXT) then Exit;
+    @glMultiDrawElementsEXT := SDL_GL_GetProcAddress('glMultiDrawElementsEXT');
+    if not Assigned(glMultiDrawElementsEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_packed_pixels: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_packed_pixels', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_paletted_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_paletted_texture', extstring) then
+  begin
+    @glColorTableEXT := SDL_GL_GetProcAddress('glColorTableEXT');
+    if not Assigned(glColorTableEXT) then Exit;
+    @glColorSubTableEXT := SDL_GL_GetProcAddress('glColorSubTableEXT');
+    if not Assigned(glColorSubTableEXT) then Exit;
+    @glGetColorTableEXT := SDL_GL_GetProcAddress('glGetColorTableEXT');
+    if not Assigned(glGetColorTableEXT) then Exit;
+    @glGetColorTableParameterivEXT := SDL_GL_GetProcAddress('glGetColorTableParameterivEXT');
+    if not Assigned(glGetColorTableParameterivEXT) then Exit;
+    @glGetColorTableParameterfvEXT := SDL_GL_GetProcAddress('glGetColorTableParameterfvEXT');
+    if not Assigned(glGetColorTableParameterfvEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_point_parameters: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_point_parameters', extstring) then
+  begin
+    @glPointParameterfEXT := SDL_GL_GetProcAddress('glPointParameterfEXT');
+    if not Assigned(glPointParameterfEXT) then Exit;
+    @glPointParameterfvEXT := SDL_GL_GetProcAddress('glPointParameterfvEXT');
+    if not Assigned(glPointParameterfvEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_polygon_offset: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_polygon_offset', extstring) then
+  begin
+    @glPolygonOffsetEXT := SDL_GL_GetProcAddress('glPolygonOffsetEXT');
+    if not Assigned(glPolygonOffsetEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_separate_specular_color: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_separate_specular_color', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_shadow_funcs: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_shadow_funcs', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_shared_texture_palette: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_shared_texture_palette', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_stencil_two_side: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_stencil_two_side', extstring) then
+  begin
+    @glActiveStencilFaceEXT := SDL_GL_GetProcAddress('glActiveStencilFaceEXT');
+    if not Assigned(glActiveStencilFaceEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_stencil_wrap: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_stencil_wrap', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_subtexture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_subtexture', extstring) then
+  begin
+    @glTexSubImage1DEXT := SDL_GL_GetProcAddress('glTexSubImage1DEXT');
+    if not Assigned(glTexSubImage1DEXT) then Exit;
+    @glTexSubImage2DEXT := SDL_GL_GetProcAddress('glTexSubImage2DEXT');
+    if not Assigned(glTexSubImage2DEXT) then Exit;
+    @glTexSubImage3DEXT := SDL_GL_GetProcAddress('glTexSubImage3DEXT');
+    if not Assigned(glTexSubImage3DEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture3D: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture3D', extstring) then
+  begin
+    glTexImage3DEXT := SDL_GL_GetProcAddress('glTexImage3DEXT');
+    if not Assigned(glTexImage3DEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_compression_s3tc: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_compression_s3tc', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_env_add: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_env_add', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_env_combine: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_env_combine', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_env_dot3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_env_dot3', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_filter_anisotropic: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_filter_anisotropic', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_lod_bias: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_lod_bias', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_object', extstring) then
+  begin
+    @glGenTexturesEXT := SDL_GL_GetProcAddress('glGenTexturesEXT');
+    if not Assigned(glGenTexturesEXT) then Exit;
+    @glDeleteTexturesEXT := SDL_GL_GetProcAddress('glDeleteTexturesEXT');
+    if not Assigned(glDeleteTexturesEXT) then Exit;
+    @glBindTextureEXT := SDL_GL_GetProcAddress('glBindTextureEXT');
+    if not Assigned(glBindTextureEXT) then Exit;
+    @glPrioritizeTexturesEXT := SDL_GL_GetProcAddress('glPrioritizeTexturesEXT');
+    if not Assigned(glPrioritizeTexturesEXT) then Exit;
+    @glAreTexturesResidentEXT := SDL_GL_GetProcAddress('glAreTexturesResidentEXT');
+    if not Assigned(glAreTexturesResidentEXT) then Exit;
+    @glIsTextureEXT := SDL_GL_GetProcAddress('glIsTextureEXT');
+    if not Assigned(glIsTextureEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_vertex_array: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_vertex_array', extstring) then
+  begin
+    @glArrayElementEXT := SDL_GL_GetProcAddress('glArrayElementEXT');
+    if not Assigned(glArrayElementEXT) then Exit;
+    @glDrawArraysEXT := SDL_GL_GetProcAddress('glDrawArraysEXT');
+    if not Assigned(glDrawArraysEXT) then Exit;
+    @glVertexPointerEXT := SDL_GL_GetProcAddress('glVertexPointerEXT');
+    if not Assigned(glVertexPointerEXT) then Exit;
+    @glNormalPointerEXT := SDL_GL_GetProcAddress('glNormalPointerEXT');
+    if not Assigned(glNormalPointerEXT) then Exit;
+    @glColorPointerEXT := SDL_GL_GetProcAddress('glColorPointerEXT');
+    if not Assigned(glColorPointerEXT) then Exit;
+    @glIndexPointerEXT := SDL_GL_GetProcAddress('glIndexPointerEXT');
+    if not Assigned(glIndexPointerEXT) then Exit;
+    @glTexCoordPointerEXT := SDL_GL_GetProcAddress('glTexCoordPointerEXT');
+    if not Assigned(glTexCoordPointerEXT) then Exit;
+    @glEdgeFlagPointerEXT := SDL_GL_GetProcAddress('glEdgeFlagPointerEXT');
+    if not Assigned(glEdgeFlagPointerEXT) then Exit;
+    @glGetPointervEXT := SDL_GL_GetProcAddress('glGetPointervEXT');
+    if not Assigned(glGetPointervEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_vertex_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_vertex_shader', extstring) then
+  begin
+    @glBeginVertexShaderEXT := SDL_GL_GetProcAddress('glBeginVertexShaderEXT');
+    if not Assigned(glBeginVertexShaderEXT) then Exit;
+    @glEndVertexShaderEXT := SDL_GL_GetProcAddress('glEndVertexShaderEXT');
+    if not Assigned(glEndVertexShaderEXT) then Exit;
+    @glBindVertexShaderEXT := SDL_GL_GetProcAddress('glBindVertexShaderEXT');
+    if not Assigned(glBindVertexShaderEXT) then Exit;
+    @glGenVertexShadersEXT := SDL_GL_GetProcAddress('glGenVertexShadersEXT');
+    if not Assigned(glGenVertexShadersEXT) then Exit;
+    @glDeleteVertexShaderEXT := SDL_GL_GetProcAddress('glDeleteVertexShaderEXT');
+    if not Assigned(glDeleteVertexShaderEXT) then Exit;
+    @glShaderOp1EXT := SDL_GL_GetProcAddress('glShaderOp1EXT');
+    if not Assigned(glShaderOp1EXT) then Exit;
+    @glShaderOp2EXT := SDL_GL_GetProcAddress('glShaderOp2EXT');
+    if not Assigned(glShaderOp2EXT) then Exit;
+    @glShaderOp3EXT := SDL_GL_GetProcAddress('glShaderOp3EXT');
+    if not Assigned(glShaderOp3EXT) then Exit;
+    @glSwizzleEXT := SDL_GL_GetProcAddress('glSwizzleEXT');
+    if not Assigned(glSwizzleEXT) then Exit;
+    @glWriteMaskEXT := SDL_GL_GetProcAddress('glWriteMaskEXT');
+    if not Assigned(glWriteMaskEXT) then Exit;
+    @glInsertComponentEXT := SDL_GL_GetProcAddress('glInsertComponentEXT');
+    if not Assigned(glInsertComponentEXT) then Exit;
+    @glExtractComponentEXT := SDL_GL_GetProcAddress('glExtractComponentEXT');
+    if not Assigned(glExtractComponentEXT) then Exit;
+    @glGenSymbolsEXT := SDL_GL_GetProcAddress('glGenSymbolsEXT');
+    if not Assigned(glGenSymbolsEXT) then Exit;
+    @glSetInvariantEXT := SDL_GL_GetProcAddress('glSetInvariantEXT');
+    if not Assigned(glSetInvariantEXT) then Exit;
+    @glSetLocalConstantEXT := SDL_GL_GetProcAddress('glSetLocalConstantEXT');
+    if not Assigned(glSetLocalConstantEXT) then Exit;
+    @glVariantbvEXT := SDL_GL_GetProcAddress('glVariantbvEXT');
+    if not Assigned(glVariantbvEXT) then Exit;
+    @glVariantsvEXT := SDL_GL_GetProcAddress('glVariantsvEXT');
+    if not Assigned(glVariantsvEXT) then Exit;
+    @glVariantivEXT := SDL_GL_GetProcAddress('glVariantivEXT');
+    if not Assigned(glVariantivEXT) then Exit;
+    @glVariantfvEXT := SDL_GL_GetProcAddress('glVariantfvEXT');
+    if not Assigned(glVariantfvEXT) then Exit;
+    @glVariantdvEXT := SDL_GL_GetProcAddress('glVariantdvEXT');
+    if not Assigned(glVariantdvEXT) then Exit;
+    @glVariantubvEXT := SDL_GL_GetProcAddress('glVariantubvEXT');
+    if not Assigned(glVariantubvEXT) then Exit;
+    @glVariantusvEXT := SDL_GL_GetProcAddress('glVariantusvEXT');
+    if not Assigned(glVariantusvEXT) then Exit;
+    @glVariantuivEXT := SDL_GL_GetProcAddress('glVariantuivEXT');
+    if not Assigned(glVariantuivEXT) then Exit;
+    @glVariantPointerEXT := SDL_GL_GetProcAddress('glVariantPointerEXT');
+    if not Assigned(glVariantPointerEXT) then Exit;
+    @glEnableVariantClientStateEXT := SDL_GL_GetProcAddress('glEnableVariantClientStateEXT');
+    if not Assigned(glEnableVariantClientStateEXT) then Exit;
+    @glDisableVariantClientStateEXT := SDL_GL_GetProcAddress('glDisableVariantClientStateEXT');
+    if not Assigned(glDisableVariantClientStateEXT) then Exit;
+    @glBindLightParameterEXT := SDL_GL_GetProcAddress('glBindLightParameterEXT');
+    if not Assigned(glBindLightParameterEXT) then Exit;
+    @glBindMaterialParameterEXT := SDL_GL_GetProcAddress('glBindMaterialParameterEXT');
+    if not Assigned(glBindMaterialParameterEXT) then Exit;
+    @glBindTexGenParameterEXT := SDL_GL_GetProcAddress('glBindTexGenParameterEXT');
+    if not Assigned(glBindTexGenParameterEXT) then Exit;
+    @glBindTextureUnitParameterEXT := SDL_GL_GetProcAddress('glBindTextureUnitParameterEXT');
+    if not Assigned(glBindTextureUnitParameterEXT) then Exit;
+    @glBindParameterEXT := SDL_GL_GetProcAddress('glBindParameterEXT');
+    if not Assigned(glBindParameterEXT) then Exit;
+    @glIsVariantEnabledEXT := SDL_GL_GetProcAddress('glIsVariantEnabledEXT');
+    if not Assigned(glIsVariantEnabledEXT) then Exit;
+    @glGetVariantBooleanvEXT := SDL_GL_GetProcAddress('glGetVariantBooleanvEXT');
+    if not Assigned(glGetVariantBooleanvEXT) then Exit;
+    @glGetVariantIntegervEXT := SDL_GL_GetProcAddress('glGetVariantIntegervEXT');
+    if not Assigned(glGetVariantIntegervEXT) then Exit;
+    @glGetVariantFloatvEXT := SDL_GL_GetProcAddress('glGetVariantFloatvEXT');
+    if not Assigned(glGetVariantFloatvEXT) then Exit;
+    @glGetVariantPointervEXT := SDL_GL_GetProcAddress('glGetVariantPointervEXT');
+    if not Assigned(glGetVariantPointervEXT) then Exit;
+    @glGetInvariantBooleanvEXT := SDL_GL_GetProcAddress('glGetInvariantBooleanvEXT');
+    if not Assigned(glGetInvariantBooleanvEXT) then Exit;
+    @glGetInvariantIntegervEXT := SDL_GL_GetProcAddress('glGetInvariantIntegervEXT');
+    if not Assigned(glGetInvariantIntegervEXT) then Exit;
+    @glGetInvariantFloatvEXT := SDL_GL_GetProcAddress('glGetInvariantFloatvEXT');
+    if not Assigned(glGetInvariantFloatvEXT) then Exit;
+    @glGetLocalConstantBooleanvEXT := SDL_GL_GetProcAddress('glGetLocalConstantBooleanvEXT');
+    if not Assigned(glGetLocalConstantBooleanvEXT) then Exit;
+    @glGetLocalConstantIntegervEXT := SDL_GL_GetProcAddress('glGetLocalConstantIntegervEXT');
+    if not Assigned(glGetLocalConstantIntegervEXT) then Exit;
+    @glGetLocalConstantFloatvEXT := SDL_GL_GetProcAddress('glGetLocalConstantFloatvEXT');
+    if not Assigned(glGetLocalConstantFloatvEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_vertex_weighting: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_vertex_weighting', extstring) then
+  begin
+    @glVertexWeightfEXT := SDL_GL_GetProcAddress('glVertexWeightfEXT');
+    if not Assigned(glVertexWeightfEXT) then Exit;
+    @glVertexWeightfvEXT := SDL_GL_GetProcAddress('glVertexWeightfvEXT');
+    if not Assigned(glVertexWeightfvEXT) then Exit;
+    @glVertexWeightPointerEXT := SDL_GL_GetProcAddress('glVertexWeightPointerEXT');
+    if not Assigned(glVertexWeightPointerEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_HP_occlusion_test: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_HP_occlusion_test', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_blend_square: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_blend_square', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_copy_depth_to_color: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_copy_depth_to_color', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_depth_clamp: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_depth_clamp', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_evaluators: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_evaluators', extstring) then
+  begin
+    @glMapControlPointsNV := SDL_GL_GetProcAddress('glMapControlPointsNV');
+    if not Assigned(glMapControlPointsNV) then Exit;
+    @glMapParameterivNV := SDL_GL_GetProcAddress('glMapParameterivNV');
+    if not Assigned(glMapParameterivNV) then Exit;
+    @glMapParameterfvNV := SDL_GL_GetProcAddress('glMapParameterfvNV');
+    if not Assigned(glMapParameterfvNV) then Exit;
+    @glGetMapControlPointsNV := SDL_GL_GetProcAddress('glGetMapControlPointsNV');
+    if not Assigned(glGetMapControlPointsNV) then Exit;
+    @glGetMapParameterivNV := SDL_GL_GetProcAddress('glGetMapParameterivNV');
+    if not Assigned(glGetMapParameterivNV) then Exit;
+    @glGetMapParameterfvNV := SDL_GL_GetProcAddress('glGetMapParameterfvNV');
+    if not Assigned(glGetMapParameterfvNV) then Exit;
+    @glGetMapAttribParameterivNV := SDL_GL_GetProcAddress('glGetMapAttribParameterivNV');
+    if not Assigned(glGetMapAttribParameterivNV) then Exit;
+    @glGetMapAttribParameterfvNV := SDL_GL_GetProcAddress('glGetMapAttribParameterfvNV');
+    if not Assigned(glGetMapAttribParameterfvNV) then Exit;
+    @glEvalMapsNV := SDL_GL_GetProcAddress('glEvalMapsNV');
+    if not Assigned(glEvalMapsNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_fence: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_fence', extstring) then
+  begin
+    @glGenFencesNV := SDL_GL_GetProcAddress('glGenFencesNV');
+    if not Assigned(glGenFencesNV) then Exit;
+    @glDeleteFencesNV := SDL_GL_GetProcAddress('glDeleteFencesNV');
+    if not Assigned(glDeleteFencesNV) then Exit;
+    @glSetFenceNV := SDL_GL_GetProcAddress('glSetFenceNV');
+    if not Assigned(glSetFenceNV) then Exit;
+    @glTestFenceNV := SDL_GL_GetProcAddress('glTestFenceNV');
+    if not Assigned(glTestFenceNV) then Exit;
+    @glFinishFenceNV := SDL_GL_GetProcAddress('glFinishFenceNV');
+    if not Assigned(glFinishFenceNV) then Exit;
+    @glIsFenceNV := SDL_GL_GetProcAddress('glIsFenceNV');
+    if not Assigned(glIsFenceNV) then Exit;
+    @glGetFenceivNV := SDL_GL_GetProcAddress('glGetFenceivNV');
+    if not Assigned(glGetFenceivNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_fog_distance: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_fog_distance', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_light_max_exponent: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_light_max_exponent', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_multisample_filter_hint: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_multisample_filter_hint', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_occlusion_query: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_occlusion_query', extstring) then
+  begin
+    @glGenOcclusionQueriesNV := SDL_GL_GetProcAddress('glGenOcclusionQueriesNV');
+    if not Assigned(glGenOcclusionQueriesNV) then Exit;
+    @glDeleteOcclusionQueriesNV := SDL_GL_GetProcAddress('glDeleteOcclusionQueriesNV');
+    if not Assigned(glDeleteOcclusionQueriesNV) then Exit;
+    @glIsOcclusionQueryNV := SDL_GL_GetProcAddress('glIsOcclusionQueryNV');
+    if not Assigned(glIsOcclusionQueryNV) then Exit;
+    @glBeginOcclusionQueryNV := SDL_GL_GetProcAddress('glBeginOcclusionQueryNV');
+    if not Assigned(glBeginOcclusionQueryNV) then Exit;
+    @glEndOcclusionQueryNV := SDL_GL_GetProcAddress('glEndOcclusionQueryNV');
+    if not Assigned(glEndOcclusionQueryNV) then Exit;
+    @glGetOcclusionQueryivNV := SDL_GL_GetProcAddress('glGetOcclusionQueryivNV');
+    if not Assigned(glGetOcclusionQueryivNV) then Exit;
+    @glGetOcclusionQueryuivNV := SDL_GL_GetProcAddress('glGetOcclusionQueryuivNV');
+    if not Assigned(glGetOcclusionQueryuivNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_packed_depth_stencil: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_packed_depth_stencil', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_point_sprite: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_point_sprite', extstring) then
+  begin
+    @glPointParameteriNV := SDL_GL_GetProcAddress('glPointParameteriNV');
+    if not Assigned(glPointParameteriNV) then Exit;
+    @glPointParameterivNV := SDL_GL_GetProcAddress('glPointParameterivNV');
+    if not Assigned(glPointParameterivNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_register_combiners: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_register_combiners', extstring) then
+  begin
+    @glCombinerParameterfvNV := SDL_GL_GetProcAddress('glCombinerParameterfvNV');
+    if not Assigned(glCombinerParameterfvNV) then Exit;
+    @glCombinerParameterivNV := SDL_GL_GetProcAddress('glCombinerParameterivNV');
+    if not Assigned(glCombinerParameterivNV) then Exit;
+    @glCombinerParameterfNV := SDL_GL_GetProcAddress('glCombinerParameterfNV');
+    if not Assigned(glCombinerParameterfNV) then Exit;
+    @glCombinerParameteriNV := SDL_GL_GetProcAddress('glCombinerParameteriNV');
+    if not Assigned(glCombinerParameteriNV) then Exit;
+    @glCombinerInputNV := SDL_GL_GetProcAddress('glCombinerInputNV');
+    if not Assigned(glCombinerInputNV) then Exit;
+    @glCombinerOutputNV := SDL_GL_GetProcAddress('glCombinerOutputNV');
+    if not Assigned(glCombinerOutputNV) then Exit;
+    @glFinalCombinerInputNV := SDL_GL_GetProcAddress('glFinalCombinerInputNV');
+    if not Assigned(glFinalCombinerInputNV) then Exit;
+    @glGetCombinerInputParameterfvNV := SDL_GL_GetProcAddress('glGetCombinerInputParameterfvNV');
+    if not Assigned(glGetCombinerInputParameterfvNV) then Exit;
+    @glGetCombinerInputParameterivNV := SDL_GL_GetProcAddress('glGetCombinerInputParameterivNV');
+    if not Assigned(glGetCombinerInputParameterivNV) then Exit;
+    @glGetCombinerOutputParameterfvNV := SDL_GL_GetProcAddress('glGetCombinerOutputParameterfvNV');
+    if not Assigned(glGetCombinerOutputParameterfvNV) then Exit;
+    @glGetCombinerOutputParameterivNV := SDL_GL_GetProcAddress('glGetCombinerOutputParameterivNV');
+    if not Assigned(glGetCombinerOutputParameterivNV) then Exit;
+    @glGetFinalCombinerInputParameterfvNV := SDL_GL_GetProcAddress('glGetFinalCombinerInputParameterfvNV');
+    if not Assigned(glGetFinalCombinerInputParameterfvNV) then Exit;
+    @glGetFinalCombinerInputParameterivNV := SDL_GL_GetProcAddress('glGetFinalCombinerInputParameterivNV');
+    if not Assigned(glGetFinalCombinerInputParameterivNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_register_combiners2: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_register_combiners2', extstring) then
+  begin
+    @glCombinerStageParameterfvNV := SDL_GL_GetProcAddress('glCombinerStageParameterfvNV');
+    if not Assigned(glCombinerStageParameterfvNV) then Exit;
+    @glGetCombinerStageParameterfvNV := SDL_GL_GetProcAddress('glGetCombinerStageParameterfvNV');
+    if not Assigned(glGetCombinerStageParameterfvNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texgen_emboss: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texgen_emboss', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texgen_reflection: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texgen_reflection', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_compression_vtc: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_compression_vtc', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_env_combine4: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_env_combine4', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_rectangle: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_rectangle', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_shader', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_shader2: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_shader2', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_shader3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_shader3', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_array_range: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_array_range', extstring) then
+  begin
+    @glVertexArrayRangeNV := SDL_GL_GetProcAddress('glVertexArrayRangeNV');
+    if not Assigned(glVertexArrayRangeNV) then Exit;
+    @glFlushVertexArrayRangeNV := SDL_GL_GetProcAddress('glFlushVertexArrayRangeNV');
+    if not Assigned(glFlushVertexArrayRangeNV) then Exit;
+    {$IFDEF WINDOWS}
+    @wglAllocateMemoryNV := SDL_GL_GetProcAddress('wglAllocateMemoryNV');
+    if not Assigned(wglAllocateMemoryNV) then Exit;
+    @wglFreeMemoryNV := SDL_GL_GetProcAddress('wglFreeMemoryNV');
+    if not Assigned(wglFreeMemoryNV) then Exit;
+    {$ENDIF}
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_array_range2: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_array_range2', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_program: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_program', extstring) then
+  begin
+    @glBindProgramNV := SDL_GL_GetProcAddress('glBindProgramNV');
+    if not Assigned(glBindProgramNV) then Exit;
+    @glDeleteProgramsNV := SDL_GL_GetProcAddress('glDeleteProgramsNV');
+    if not Assigned(glDeleteProgramsNV) then Exit;
+    @glExecuteProgramNV := SDL_GL_GetProcAddress('glExecuteProgramNV');
+    if not Assigned(glExecuteProgramNV) then Exit;
+    @glGenProgramsNV := SDL_GL_GetProcAddress('glGenProgramsNV');
+    if not Assigned(glGenProgramsNV) then Exit;
+    @glAreProgramsResidentNV := SDL_GL_GetProcAddress('glAreProgramsResidentNV');
+    if not Assigned(glAreProgramsResidentNV) then Exit;
+    @glRequestResidentProgramsNV := SDL_GL_GetProcAddress('glRequestResidentProgramsNV');
+    if not Assigned(glRequestResidentProgramsNV) then Exit;
+    @glGetProgramParameterfvNV := SDL_GL_GetProcAddress('glGetProgramParameterfvNV');
+    if not Assigned(glGetProgramParameterfvNV) then Exit;
+    @glGetProgramParameterdvNV := SDL_GL_GetProcAddress('glGetProgramParameterdvNV');
+    if not Assigned(glGetProgramParameterdvNV) then Exit;
+    @glGetProgramivNV := SDL_GL_GetProcAddress('glGetProgramivNV');
+    if not Assigned(glGetProgramivNV) then Exit;
+    @glGetProgramStringNV := SDL_GL_GetProcAddress('glGetProgramStringNV');
+    if not Assigned(glGetProgramStringNV) then Exit;
+    @glGetTrackMatrixivNV := SDL_GL_GetProcAddress('glGetTrackMatrixivNV');
+    if not Assigned(glGetTrackMatrixivNV) then Exit;
+    @glGetVertexAttribdvNV := SDL_GL_GetProcAddress('glGetVertexAttribdvNV');
+    if not Assigned(glGetVertexAttribdvNV) then Exit;
+    @glGetVertexAttribfvNV := SDL_GL_GetProcAddress('glGetVertexAttribfvNV');
+    if not Assigned(glGetVertexAttribfvNV) then Exit;
+    @glGetVertexAttribivNV := SDL_GL_GetProcAddress('glGetVertexAttribivNV');
+    if not Assigned(glGetVertexAttribivNV) then Exit;
+    @glGetVertexAttribPointervNV := SDL_GL_GetProcAddress('glGetVertexAttribPointervNV');
+    if not Assigned(glGetVertexAttribPointervNV) then Exit;
+    @glIsProgramNV := SDL_GL_GetProcAddress('glIsProgramNV');
+    if not Assigned(glIsProgramNV) then Exit;
+    @glLoadProgramNV := SDL_GL_GetProcAddress('glLoadProgramNV');
+    if not Assigned(glLoadProgramNV) then Exit;
+    @glProgramParameter4fNV := SDL_GL_GetProcAddress('glProgramParameter4fNV');
+    if not Assigned(glProgramParameter4fNV) then Exit;
+    @glProgramParameter4fvNV := SDL_GL_GetProcAddress('glProgramParameter4fvNV');
+    if not Assigned(glProgramParameter4fvNV) then Exit;
+    @glProgramParameters4dvNV := SDL_GL_GetProcAddress('glProgramParameters4dvNV');
+    if not Assigned(glProgramParameters4dvNV) then Exit;
+    @glProgramParameters4fvNV := SDL_GL_GetProcAddress('glProgramParameters4fvNV');
+    if not Assigned(glProgramParameters4fvNV) then Exit;
+    @glTrackMatrixNV := SDL_GL_GetProcAddress('glTrackMatrixNV');
+    if not Assigned(glTrackMatrixNV) then Exit;
+    @glVertexAttribPointerNV := SDL_GL_GetProcAddress('glVertexAttribPointerNV');
+    if not Assigned(glVertexAttribPointerNV) then Exit;
+    @glVertexAttrib1sNV := SDL_GL_GetProcAddress('glVertexAttrib1sNV');
+    if not Assigned(glVertexAttrib1sNV) then Exit;
+    @glVertexAttrib1fNV := SDL_GL_GetProcAddress('glVertexAttrib1fNV');
+    if not Assigned(glVertexAttrib1fNV) then Exit;
+    @glVertexAttrib1dNV := SDL_GL_GetProcAddress('glVertexAttrib1dNV');
+    if not Assigned(glVertexAttrib1dNV) then Exit;
+    @glVertexAttrib2sNV := SDL_GL_GetProcAddress('glVertexAttrib2sNV');
+    if not Assigned(glVertexAttrib2sNV) then Exit;
+    @glVertexAttrib2fNV := SDL_GL_GetProcAddress('glVertexAttrib2fNV');
+    if not Assigned(glVertexAttrib2fNV) then Exit;
+    @glVertexAttrib2dNV := SDL_GL_GetProcAddress('glVertexAttrib2dNV');
+    if not Assigned(glVertexAttrib2dNV) then Exit;
+    @glVertexAttrib3sNV := SDL_GL_GetProcAddress('glVertexAttrib3sNV');
+    if not Assigned(glVertexAttrib3sNV) then Exit;
+    @glVertexAttrib3fNV := SDL_GL_GetProcAddress('glVertexAttrib3fNV');
+    if not Assigned(glVertexAttrib3fNV) then Exit;
+    @glVertexAttrib3dNV := SDL_GL_GetProcAddress('glVertexAttrib3dNV');
+    if not Assigned(glVertexAttrib3dNV) then Exit;
+    @glVertexAttrib4sNV := SDL_GL_GetProcAddress('glVertexAttrib4sNV');
+    if not Assigned(glVertexAttrib4sNV) then Exit;
+    @glVertexAttrib4fNV := SDL_GL_GetProcAddress('glVertexAttrib4fNV');
+    if not Assigned(glVertexAttrib4fNV) then Exit;
+    @glVertexAttrib4dNV := SDL_GL_GetProcAddress('glVertexAttrib4dNV');
+    if not Assigned(glVertexAttrib4dNV) then Exit;
+    @glVertexAttrib4ubNV := SDL_GL_GetProcAddress('glVertexAttrib4ubNV');
+    if not Assigned(glVertexAttrib4ubNV) then Exit;
+    @glVertexAttrib1svNV := SDL_GL_GetProcAddress('glVertexAttrib1svNV');
+    if not Assigned(glVertexAttrib1svNV) then Exit;
+    @glVertexAttrib1fvNV := SDL_GL_GetProcAddress('glVertexAttrib1fvNV');
+    if not Assigned(glVertexAttrib1fvNV) then Exit;
+    @glVertexAttrib1dvNV := SDL_GL_GetProcAddress('glVertexAttrib1dvNV');
+    if not Assigned(glVertexAttrib1dvNV) then Exit;
+    @glVertexAttrib2svNV := SDL_GL_GetProcAddress('glVertexAttrib2svNV');
+    if not Assigned(glVertexAttrib2svNV) then Exit;
+    @glVertexAttrib2fvNV := SDL_GL_GetProcAddress('glVertexAttrib2fvNV');
+    if not Assigned(glVertexAttrib2fvNV) then Exit;
+    @glVertexAttrib2dvNV := SDL_GL_GetProcAddress('glVertexAttrib2dvNV');
+    if not Assigned(glVertexAttrib2dvNV) then Exit;
+    @glVertexAttrib3svNV := SDL_GL_GetProcAddress('glVertexAttrib3svNV');
+    if not Assigned(glVertexAttrib3svNV) then Exit;
+    @glVertexAttrib3fvNV := SDL_GL_GetProcAddress('glVertexAttrib3fvNV');
+    if not Assigned(glVertexAttrib3fvNV) then Exit;
+    @glVertexAttrib3dvNV := SDL_GL_GetProcAddress('glVertexAttrib3dvNV');
+    if not Assigned(glVertexAttrib3dvNV) then Exit;
+    @glVertexAttrib4svNV := SDL_GL_GetProcAddress('glVertexAttrib4svNV');
+    if not Assigned(glVertexAttrib4svNV) then Exit;
+    @glVertexAttrib4fvNV := SDL_GL_GetProcAddress('glVertexAttrib4fvNV');
+    if not Assigned(glVertexAttrib4fvNV) then Exit;
+    @glVertexAttrib4dvNV := SDL_GL_GetProcAddress('glVertexAttrib4dvNV');
+    if not Assigned(glVertexAttrib4dvNV) then Exit;
+    @glVertexAttrib4ubvNV := SDL_GL_GetProcAddress('glVertexAttrib4ubvNV');
+    if not Assigned(glVertexAttrib4ubvNV) then Exit;
+    @glVertexAttribs1svNV := SDL_GL_GetProcAddress('glVertexAttribs1svNV');
+    if not Assigned(glVertexAttribs1svNV) then Exit;
+    @glVertexAttribs1fvNV := SDL_GL_GetProcAddress('glVertexAttribs1fvNV');
+    if not Assigned(glVertexAttribs1fvNV) then Exit;
+    @glVertexAttribs1dvNV := SDL_GL_GetProcAddress('glVertexAttribs1dvNV');
+    if not Assigned(glVertexAttribs1dvNV) then Exit;
+    @glVertexAttribs2svNV := SDL_GL_GetProcAddress('glVertexAttribs2svNV');
+    if not Assigned(glVertexAttribs2svNV) then Exit;
+    @glVertexAttribs2fvNV := SDL_GL_GetProcAddress('glVertexAttribs2fvNV');
+    if not Assigned(glVertexAttribs2fvNV) then Exit;
+    @glVertexAttribs2dvNV := SDL_GL_GetProcAddress('glVertexAttribs2dvNV');
+    if not Assigned(glVertexAttribs2dvNV) then Exit;
+    @glVertexAttribs3svNV := SDL_GL_GetProcAddress('glVertexAttribs3svNV');
+    if not Assigned(glVertexAttribs3svNV) then Exit;
+    @glVertexAttribs3fvNV := SDL_GL_GetProcAddress('glVertexAttribs3fvNV');
+    if not Assigned(glVertexAttribs3fvNV) then Exit;
+    @glVertexAttribs3dvNV := SDL_GL_GetProcAddress('glVertexAttribs3dvNV');
+    if not Assigned(glVertexAttribs3dvNV) then Exit;
+    @glVertexAttribs4svNV := SDL_GL_GetProcAddress('glVertexAttribs4svNV');
+    if not Assigned(glVertexAttribs4svNV) then Exit;
+    @glVertexAttribs4fvNV := SDL_GL_GetProcAddress('glVertexAttribs4fvNV');
+    if not Assigned(glVertexAttribs4fvNV) then Exit;
+    @glVertexAttribs4dvNV := SDL_GL_GetProcAddress('glVertexAttribs4dvNV');
+    if not Assigned(glVertexAttribs4dvNV) then Exit;
+    @glVertexAttribs4ubvNV := SDL_GL_GetProcAddress('glVertexAttribs4ubvNV');
+    if not Assigned(glVertexAttribs4ubvNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_program1_1: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_program1_1', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_element_array: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_element_array', extstring) then
+  begin
+    @glElementPointerATI := SDL_GL_GetProcAddress('glElementPointerATI');
+    if not Assigned(glElementPointerATI) then Exit;
+    @glDrawElementArrayATI := SDL_GL_GetProcAddress('glDrawElementArrayATI');
+    if not Assigned(glDrawElementArrayATI) then Exit;
+    @glDrawRangeElementArrayATI := SDL_GL_GetProcAddress('glDrawRangeElementArrayATI');
+    if not Assigned(glDrawRangeElementArrayATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_envmap_bumpmap: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_envmap_bumpmap', extstring) then
+  begin
+    @glTexBumpParameterivATI := SDL_GL_GetProcAddress('glTexBumpParameterivATI');
+    if not Assigned(glTexBumpParameterivATI) then Exit;
+    @glTexBumpParameterfvATI := SDL_GL_GetProcAddress('glTexBumpParameterfvATI');
+    if not Assigned(glTexBumpParameterfvATI) then Exit;
+    @glGetTexBumpParameterivATI := SDL_GL_GetProcAddress('glGetTexBumpParameterivATI');
+    if not Assigned(glGetTexBumpParameterivATI) then Exit;
+    @glGetTexBumpParameterfvATI := SDL_GL_GetProcAddress('glGetTexBumpParameterfvATI');
+    if not Assigned(glGetTexBumpParameterfvATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_fragment_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_fragment_shader', extstring) then
+  begin
+    @glGenFragmentShadersATI := SDL_GL_GetProcAddress('glGenFragmentShadersATI');
+    if not Assigned(glGenFragmentShadersATI) then Exit;
+    @glBindFragmentShaderATI := SDL_GL_GetProcAddress('glBindFragmentShaderATI');
+    if not Assigned(glBindFragmentShaderATI) then Exit;
+    @glDeleteFragmentShaderATI := SDL_GL_GetProcAddress('glDeleteFragmentShaderATI');
+    if not Assigned(glDeleteFragmentShaderATI) then Exit;
+    @glBeginFragmentShaderATI := SDL_GL_GetProcAddress('glBeginFragmentShaderATI');
+    if not Assigned(glBeginFragmentShaderATI) then Exit;
+    @glEndFragmentShaderATI := SDL_GL_GetProcAddress('glEndFragmentShaderATI');
+    if not Assigned(glEndFragmentShaderATI) then Exit;
+    @glPassTexCoordATI := SDL_GL_GetProcAddress('glPassTexCoordATI');
+    if not Assigned(glPassTexCoordATI) then Exit;
+    @glSampleMapATI := SDL_GL_GetProcAddress('glSampleMapATI');
+    if not Assigned(glSampleMapATI) then Exit;
+    @glColorFragmentOp1ATI := SDL_GL_GetProcAddress('glColorFragmentOp1ATI');
+    if not Assigned(glColorFragmentOp1ATI) then Exit;
+    @glColorFragmentOp2ATI := SDL_GL_GetProcAddress('glColorFragmentOp2ATI');
+    if not Assigned(glColorFragmentOp2ATI) then Exit;
+    @glColorFragmentOp3ATI := SDL_GL_GetProcAddress('glColorFragmentOp3ATI');
+    if not Assigned(glColorFragmentOp3ATI) then Exit;
+    @glAlphaFragmentOp1ATI := SDL_GL_GetProcAddress('glAlphaFragmentOp1ATI');
+    if not Assigned(glAlphaFragmentOp1ATI) then Exit;
+    @glAlphaFragmentOp2ATI := SDL_GL_GetProcAddress('glAlphaFragmentOp2ATI');
+    if not Assigned(glAlphaFragmentOp2ATI) then Exit;
+    @glAlphaFragmentOp3ATI := SDL_GL_GetProcAddress('glAlphaFragmentOp3ATI');
+    if not Assigned(glAlphaFragmentOp3ATI) then Exit;
+    @glSetFragmentShaderConstantATI := SDL_GL_GetProcAddress('glSetFragmentShaderConstantATI');
+    if not Assigned(glSetFragmentShaderConstantATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_pn_triangles: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_pn_triangles', extstring) then
+  begin
+    @glPNTrianglesiATI := SDL_GL_GetProcAddress('glPNTrianglesiATI');
+    if not Assigned(glPNTrianglesiATI) then Exit;
+    @glPNTrianglesfATI := SDL_GL_GetProcAddress('glPNTrianglesfATI');
+    if not Assigned(glPNTrianglesfATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_texture_mirror_once: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_texture_mirror_once', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_vertex_array_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_vertex_array_object', extstring) then
+  begin
+    @glNewObjectBufferATI := SDL_GL_GetProcAddress('glNewObjectBufferATI');
+    if not Assigned(glNewObjectBufferATI) then Exit;
+    @glIsObjectBufferATI := SDL_GL_GetProcAddress('glIsObjectBufferATI');
+    if not Assigned(glIsObjectBufferATI) then Exit;
+    @glUpdateObjectBufferATI := SDL_GL_GetProcAddress('glUpdateObjectBufferATI');
+    if not Assigned(glUpdateObjectBufferATI) then Exit;
+    @glGetObjectBufferfvATI := SDL_GL_GetProcAddress('glGetObjectBufferfvATI');
+    if not Assigned(glGetObjectBufferfvATI) then Exit;
+    @glGetObjectBufferivATI := SDL_GL_GetProcAddress('glGetObjectBufferivATI');
+    if not Assigned(glGetObjectBufferivATI) then Exit;
+    @glDeleteObjectBufferATI := SDL_GL_GetProcAddress('glDeleteObjectBufferATI');
+    if not Assigned(glDeleteObjectBufferATI) then Exit;
+    @glArrayObjectATI := SDL_GL_GetProcAddress('glArrayObjectATI');
+    if not Assigned(glArrayObjectATI) then Exit;
+    @glGetArrayObjectfvATI := SDL_GL_GetProcAddress('glGetArrayObjectfvATI');
+    if not Assigned(glGetArrayObjectfvATI) then Exit;
+    @glGetArrayObjectivATI := SDL_GL_GetProcAddress('glGetArrayObjectivATI');
+    if not Assigned(glGetArrayObjectivATI) then Exit;
+    @glVariantArrayObjectATI := SDL_GL_GetProcAddress('glVariantArrayObjectATI');
+    if not Assigned(glVariantArrayObjectATI) then Exit;
+    @glGetVariantArrayObjectfvATI := SDL_GL_GetProcAddress('glGetVariantArrayObjectfvATI');
+    if not Assigned(glGetVariantArrayObjectfvATI) then Exit;
+    @glGetVariantArrayObjectivATI := SDL_GL_GetProcAddress('glGetVariantArrayObjectivATI');
+    if not Assigned(glGetVariantArrayObjectivATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_vertex_streams: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_vertex_streams', extstring) then
+  begin
+    @glVertexStream1s := SDL_GL_GetProcAddress('glVertexStream1s');
+    if not Assigned(glVertexStream1s) then Exit;
+    @glVertexStream1i := SDL_GL_GetProcAddress('glVertexStream1i');
+    if not Assigned(glVertexStream1i) then Exit;
+    @glVertexStream1f := SDL_GL_GetProcAddress('glVertexStream1f');
+    if not Assigned(glVertexStream1f) then Exit;
+    @glVertexStream1d := SDL_GL_GetProcAddress('glVertexStream1d');
+    if not Assigned(glVertexStream1d) then Exit;
+    @glVertexStream1sv := SDL_GL_GetProcAddress('glVertexStream1sv');
+    if not Assigned(glVertexStream1sv) then Exit;
+    @glVertexStream1iv := SDL_GL_GetProcAddress('glVertexStream1iv');
+    if not Assigned(glVertexStream1iv) then Exit;
+    @glVertexStream1fv := SDL_GL_GetProcAddress('glVertexStream1fv');
+    if not Assigned(glVertexStream1fv) then Exit;
+    @glVertexStream1dv := SDL_GL_GetProcAddress('glVertexStream1dv');
+    if not Assigned(glVertexStream1dv) then Exit;
+    @glVertexStream2s := SDL_GL_GetProcAddress('glVertexStream2s');
+    if not Assigned(glVertexStream2s) then Exit;
+    @glVertexStream2i := SDL_GL_GetProcAddress('glVertexStream2i');
+    if not Assigned(glVertexStream2i) then Exit;
+    @glVertexStream2f := SDL_GL_GetProcAddress('glVertexStream2f');
+    if not Assigned(glVertexStream2f) then Exit;
+    @glVertexStream2d := SDL_GL_GetProcAddress('glVertexStream2d');
+    if not Assigned(glVertexStream2d) then Exit;
+    @glVertexStream2sv := SDL_GL_GetProcAddress('glVertexStream2sv');
+    if not Assigned(glVertexStream2sv) then Exit;
+    @glVertexStream2iv := SDL_GL_GetProcAddress('glVertexStream2iv');
+    if not Assigned(glVertexStream2iv) then Exit;
+    @glVertexStream2fv := SDL_GL_GetProcAddress('glVertexStream2fv');
+    if not Assigned(glVertexStream2fv) then Exit;
+    @glVertexStream2dv := SDL_GL_GetProcAddress('glVertexStream2dv');
+    if not Assigned(glVertexStream2dv) then Exit;
+    @glVertexStream3s := SDL_GL_GetProcAddress('glVertexStream3s');
+    if not Assigned(glVertexStream3s) then Exit;
+    @glVertexStream3i := SDL_GL_GetProcAddress('glVertexStream3i');
+    if not Assigned(glVertexStream3i) then Exit;
+    @glVertexStream3f := SDL_GL_GetProcAddress('glVertexStream3f');
+    if not Assigned(glVertexStream3f) then Exit;
+    @glVertexStream3d := SDL_GL_GetProcAddress('glVertexStream3d');
+    if not Assigned(glVertexStream3d) then Exit;
+    @glVertexStream3sv := SDL_GL_GetProcAddress('glVertexStream3sv');
+    if not Assigned(glVertexStream3sv) then Exit;
+    @glVertexStream3iv := SDL_GL_GetProcAddress('glVertexStream3iv');
+    if not Assigned(glVertexStream3iv) then Exit;
+    @glVertexStream3fv := SDL_GL_GetProcAddress('glVertexStream3fv');
+    if not Assigned(glVertexStream3fv) then Exit;
+    @glVertexStream3dv := SDL_GL_GetProcAddress('glVertexStream3dv');
+    if not Assigned(glVertexStream3dv) then Exit;
+    @glVertexStream4s := SDL_GL_GetProcAddress('glVertexStream4s');
+    if not Assigned(glVertexStream4s) then Exit;
+    @glVertexStream4i := SDL_GL_GetProcAddress('glVertexStream4i');
+    if not Assigned(glVertexStream4i) then Exit;
+    @glVertexStream4f := SDL_GL_GetProcAddress('glVertexStream4f');
+    if not Assigned(glVertexStream4f) then Exit;
+    @glVertexStream4d := SDL_GL_GetProcAddress('glVertexStream4d');
+    if not Assigned(glVertexStream4d) then Exit;
+    @glVertexStream4sv := SDL_GL_GetProcAddress('glVertexStream4sv');
+    if not Assigned(glVertexStream4sv) then Exit;
+    @glVertexStream4iv := SDL_GL_GetProcAddress('glVertexStream4iv');
+    if not Assigned(glVertexStream4iv) then Exit;
+    @glVertexStream4fv := SDL_GL_GetProcAddress('glVertexStream4fv');
+    if not Assigned(glVertexStream4fv) then Exit;
+    @glVertexStream4dv := SDL_GL_GetProcAddress('glVertexStream4dv');
+    if not Assigned(glVertexStream4dv) then Exit;
+    @glNormalStream3b := SDL_GL_GetProcAddress('glNormalStream3b');
+    if not Assigned(glNormalStream3b) then Exit;
+    @glNormalStream3s := SDL_GL_GetProcAddress('glNormalStream3s');
+    if not Assigned(glNormalStream3s) then Exit;
+    @glNormalStream3i := SDL_GL_GetProcAddress('glNormalStream3i');
+    if not Assigned(glNormalStream3i) then Exit;
+    @glNormalStream3f := SDL_GL_GetProcAddress('glNormalStream3f');
+    if not Assigned(glNormalStream3f) then Exit;
+    @glNormalStream3d := SDL_GL_GetProcAddress('glNormalStream3d');
+    if not Assigned(glNormalStream3d) then Exit;
+    @glNormalStream3bv := SDL_GL_GetProcAddress('glNormalStream3bv');
+    if not Assigned(glNormalStream3bv) then Exit;
+    @glNormalStream3sv := SDL_GL_GetProcAddress('glNormalStream3sv');
+    if not Assigned(glNormalStream3sv) then Exit;
+    @glNormalStream3iv := SDL_GL_GetProcAddress('glNormalStream3iv');
+    if not Assigned(glNormalStream3iv) then Exit;
+    @glNormalStream3fv := SDL_GL_GetProcAddress('glNormalStream3fv');
+    if not Assigned(glNormalStream3fv) then Exit;
+    @glNormalStream3dv := SDL_GL_GetProcAddress('glNormalStream3dv');
+    if not Assigned(glNormalStream3dv) then Exit;
+    @glClientActiveVertexStream := SDL_GL_GetProcAddress('glClientActiveVertexStream');
+    if not Assigned(glClientActiveVertexStream) then Exit;
+    @glVertexBlendEnvi := SDL_GL_GetProcAddress('glVertexBlendEnvi');
+    if not Assigned(glVertexBlendEnvi) then Exit;
+    @glVertexBlendEnvf := SDL_GL_GetProcAddress('glVertexBlendEnvf');
+    if not Assigned(glVertexBlendEnvf) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+{$IFDEF WINDOWS}
+function Load_WGL_I3D_image_buffer: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_image_buffer', extstring) then
+  begin
+    @wglCreateImageBufferI3D := SDL_GL_GetProcAddress('wglCreateImageBufferI3D');
+    if not Assigned(wglCreateImageBufferI3D) then Exit;
+    @wglDestroyImageBufferI3D := SDL_GL_GetProcAddress('wglDestroyImageBufferI3D');
+    if not Assigned(wglDestroyImageBufferI3D) then Exit;
+    @wglAssociateImageBufferEventsI3D := SDL_GL_GetProcAddress('wglAssociateImageBufferEventsI3D');
+    if not Assigned(wglAssociateImageBufferEventsI3D) then Exit;
+    @wglReleaseImageBufferEventsI3D := SDL_GL_GetProcAddress('wglReleaseImageBufferEventsI3D');
+    if not Assigned(wglReleaseImageBufferEventsI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_I3D_swap_frame_lock: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_swap_frame_lock', extstring) then
+  begin
+    @wglEnableFrameLockI3D := SDL_GL_GetProcAddress('wglEnableFrameLockI3D');
+    if not Assigned(wglEnableFrameLockI3D) then Exit;
+    @wglDisableFrameLockI3D := SDL_GL_GetProcAddress('wglDisableFrameLockI3D');
+    if not Assigned(wglDisableFrameLockI3D) then Exit;
+    @wglIsEnabledFrameLockI3D := SDL_GL_GetProcAddress('wglIsEnabledFrameLockI3D');
+    if not Assigned(wglIsEnabledFrameLockI3D) then Exit;
+    @wglQueryFrameLockMasterI3D := SDL_GL_GetProcAddress('wglQueryFrameLockMasterI3D');
+    if not Assigned(wglQueryFrameLockMasterI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_I3D_swap_frame_usage: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_swap_frame_usage', extstring) then
+  begin
+    @wglGetFrameUsageI3D := SDL_GL_GetProcAddress('wglGetFrameUsageI3D');
+    if not Assigned(wglGetFrameUsageI3D) then Exit;
+    @wglBeginFrameTrackingI3D := SDL_GL_GetProcAddress('wglBeginFrameTrackingI3D');
+    if not Assigned(wglBeginFrameTrackingI3D) then Exit;
+    @wglEndFrameTrackingI3D := SDL_GL_GetProcAddress('wglEndFrameTrackingI3D');
+    if not Assigned(wglEndFrameTrackingI3D) then Exit;
+    @wglQueryFrameTrackingI3D := SDL_GL_GetProcAddress('wglQueryFrameTrackingI3D');
+    if not Assigned(wglQueryFrameTrackingI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+{$ENDIF}
+
+function Load_GL_3DFX_texture_compression_FXT1: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_3DFX_texture_compression_FXT1', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_IBM_cull_vertex: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_IBM_cull_vertex', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_IBM_multimode_draw_arrays: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_IBM_multimode_draw_arrays', extstring) then
+  begin
+    @glMultiModeDrawArraysIBM := SDL_GL_GetProcAddress('glMultiModeDrawArraysIBM');
+    if not Assigned(glMultiModeDrawArraysIBM) then Exit;
+    @glMultiModeDrawElementsIBM := SDL_GL_GetProcAddress('glMultiModeDrawElementsIBM');
+    if not Assigned(glMultiModeDrawElementsIBM) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_IBM_raster_pos_clip: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_IBM_raster_pos_clip', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_IBM_texture_mirrored_repeat: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_IBM_texture_mirrored_repeat', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_IBM_vertex_array_lists: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_IBM_vertex_array_lists', extstring) then
+  begin
+    @glColorPointerListIBM := SDL_GL_GetProcAddress('glColorPointerListIBM');
+    if not Assigned(glColorPointerListIBM) then Exit;
+    @glSecondaryColorPointerListIBM := SDL_GL_GetProcAddress('glSecondaryColorPointerListIBM');
+    if not Assigned(glSecondaryColorPointerListIBM) then Exit;
+    @glEdgeFlagPointerListIBM := SDL_GL_GetProcAddress('glEdgeFlagPointerListIBM');
+    if not Assigned(glEdgeFlagPointerListIBM) then Exit;
+    @glFogCoordPointerListIBM := SDL_GL_GetProcAddress('glFogCoordPointerListIBM');
+    if not Assigned(glFogCoordPointerListIBM) then Exit;
+    @glNormalPointerListIBM := SDL_GL_GetProcAddress('glNormalPointerListIBM');
+    if not Assigned(glNormalPointerListIBM) then Exit;
+    @glTexCoordPointerListIBM := SDL_GL_GetProcAddress('glTexCoordPointerListIBM');
+    if not Assigned(glTexCoordPointerListIBM) then Exit;
+    @glVertexPointerListIBM := SDL_GL_GetProcAddress('glVertexPointerListIBM');
+    if not Assigned(glVertexPointerListIBM) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_MESA_resize_buffers: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_MESA_resize_buffers', extstring) then
+  begin
+    @glResizeBuffersMESA := SDL_GL_GetProcAddress('glResizeBuffersMESA');
+    if not Assigned(glResizeBuffersMESA) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_MESA_window_pos: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_MESA_window_pos', extstring) then
+  begin
+    @glWindowPos2dMESA := SDL_GL_GetProcAddress('glWindowPos2dMESA');
+    if not Assigned(glWindowPos2dMESA) then Exit;
+    @glWindowPos2fMESA := SDL_GL_GetProcAddress('glWindowPos2fMESA');
+    if not Assigned(glWindowPos2fMESA) then Exit;
+    @glWindowPos2iMESA := SDL_GL_GetProcAddress('glWindowPos2iMESA');
+    if not Assigned(glWindowPos2iMESA) then Exit;
+    @glWindowPos2sMESA := SDL_GL_GetProcAddress('glWindowPos2sMESA');
+    if not Assigned(glWindowPos2sMESA) then Exit;
+    @glWindowPos2ivMESA := SDL_GL_GetProcAddress('glWindowPos2ivMESA');
+    if not Assigned(glWindowPos2ivMESA) then Exit;
+    @glWindowPos2svMESA := SDL_GL_GetProcAddress('glWindowPos2svMESA');
+    if not Assigned(glWindowPos2svMESA) then Exit;
+    @glWindowPos2fvMESA := SDL_GL_GetProcAddress('glWindowPos2fvMESA');
+    if not Assigned(glWindowPos2fvMESA) then Exit;
+    @glWindowPos2dvMESA := SDL_GL_GetProcAddress('glWindowPos2dvMESA');
+    if not Assigned(glWindowPos2dvMESA) then Exit;
+    @glWindowPos3iMESA := SDL_GL_GetProcAddress('glWindowPos3iMESA');
+    if not Assigned(glWindowPos3iMESA) then Exit;
+    @glWindowPos3sMESA := SDL_GL_GetProcAddress('glWindowPos3sMESA');
+    if not Assigned(glWindowPos3sMESA) then Exit;
+    @glWindowPos3fMESA := SDL_GL_GetProcAddress('glWindowPos3fMESA');
+    if not Assigned(glWindowPos3fMESA) then Exit;
+    @glWindowPos3dMESA := SDL_GL_GetProcAddress('glWindowPos3dMESA');
+    if not Assigned(glWindowPos3dMESA) then Exit;
+    @glWindowPos3ivMESA := SDL_GL_GetProcAddress('glWindowPos3ivMESA');
+    if not Assigned(glWindowPos3ivMESA) then Exit;
+    @glWindowPos3svMESA := SDL_GL_GetProcAddress('glWindowPos3svMESA');
+    if not Assigned(glWindowPos3svMESA) then Exit;
+    @glWindowPos3fvMESA := SDL_GL_GetProcAddress('glWindowPos3fvMESA');
+    if not Assigned(glWindowPos3fvMESA) then Exit;
+    @glWindowPos3dvMESA := SDL_GL_GetProcAddress('glWindowPos3dvMESA');
+    if not Assigned(glWindowPos3dvMESA) then Exit;
+    @glWindowPos4iMESA := SDL_GL_GetProcAddress('glWindowPos4iMESA');
+    if not Assigned(glWindowPos4iMESA) then Exit;
+    @glWindowPos4sMESA := SDL_GL_GetProcAddress('glWindowPos4sMESA');
+    if not Assigned(glWindowPos4sMESA) then Exit;
+    @glWindowPos4fMESA := SDL_GL_GetProcAddress('glWindowPos4fMESA');
+    if not Assigned(glWindowPos4fMESA) then Exit;
+    @glWindowPos4dMESA := SDL_GL_GetProcAddress('glWindowPos4dMESA');
+    if not Assigned(glWindowPos4dMESA) then Exit;
+    @glWindowPos4ivMESA := SDL_GL_GetProcAddress('glWindowPos4ivMESA');
+    if not Assigned(glWindowPos4ivMESA) then Exit;
+    @glWindowPos4svMESA := SDL_GL_GetProcAddress('glWindowPos4svMESA');
+    if not Assigned(glWindowPos4svMESA) then Exit;
+    @glWindowPos4fvMESA := SDL_GL_GetProcAddress('glWindowPos4fvMESA');
+    if not Assigned(glWindowPos4fvMESA) then Exit;
+    @glWindowPos4dvMESA := SDL_GL_GetProcAddress('glWindowPos4dvMESA');
+    if not Assigned(glWindowPos4dvMESA) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_OML_interlace: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_OML_interlace', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_OML_resample: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_OML_resample', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_OML_subsample: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_OML_subsample', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_generate_mipmap: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_generate_mipmap', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_multisample: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_multisample', extstring) then
+  begin
+    @glSampleMaskSGIS := SDL_GL_GetProcAddress('glSampleMaskSGIS');
+    if not Assigned(glSampleMaskSGIS) then Exit;
+    @glSamplePatternSGIS := SDL_GL_GetProcAddress('glSamplePatternSGIS');
+    if not Assigned(glSamplePatternSGIS) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_pixel_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_pixel_texture', extstring) then
+  begin
+    @glPixelTexGenParameteriSGIS := SDL_GL_GetProcAddress('glPixelTexGenParameteriSGIS');
+    if not Assigned(glPixelTexGenParameteriSGIS) then Exit;
+    @glPixelTexGenParameterfSGIS := SDL_GL_GetProcAddress('glPixelTexGenParameterfSGIS');
+    if not Assigned(glPixelTexGenParameterfSGIS) then Exit;
+    @glGetPixelTexGenParameterivSGIS := SDL_GL_GetProcAddress('glGetPixelTexGenParameterivSGIS');
+    if not Assigned(glGetPixelTexGenParameterivSGIS) then Exit;
+    @glGetPixelTexGenParameterfvSGIS := SDL_GL_GetProcAddress('glGetPixelTexGenParameterfvSGIS');
+    if not Assigned(glGetPixelTexGenParameterfvSGIS) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_texture_border_clamp: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_texture_border_clamp', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_texture_color_mask: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_texture_color_mask', extstring) then
+  begin
+    @glTextureColorMaskSGIS := SDL_GL_GetProcAddress('glTextureColorMaskSGIS');
+    if not Assigned(glTextureColorMaskSGIS) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_texture_edge_clamp: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_texture_edge_clamp', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_texture_lod: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_texture_lod', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIS_depth_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIS_depth_texture', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIX_fog_offset: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIX_fog_offset', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIX_interlace: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIX_interlace', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGIX_shadow_ambient: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGIX_shadow_ambient', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGI_color_matrix: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGI_color_matrix', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGI_color_table: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGI_color_table', extstring) then
+  begin
+    @glColorTableSGI := SDL_GL_GetProcAddress('glColorTableSGI');
+    if not Assigned(glColorTableSGI) then Exit;
+    @glCopyColorTableSGI := SDL_GL_GetProcAddress('glCopyColorTableSGI');
+    if not Assigned(glCopyColorTableSGI) then Exit;
+    @glColorTableParameterivSGI := SDL_GL_GetProcAddress('glColorTableParameterivSGI');
+    if not Assigned(glColorTableParameterivSGI) then Exit;
+    @glColorTableParameterfvSGI := SDL_GL_GetProcAddress('glColorTableParameterfvSGI');
+    if not Assigned(glColorTableParameterfvSGI) then Exit;
+    @glGetColorTableSGI := SDL_GL_GetProcAddress('glGetColorTableSGI');
+    if not Assigned(glGetColorTableSGI) then Exit;
+    @glGetColorTableParameterivSGI := SDL_GL_GetProcAddress('glGetColorTableParameterivSGI');
+    if not Assigned(glGetColorTableParameterivSGI) then Exit;
+    @glGetColorTableParameterfvSGI := SDL_GL_GetProcAddress('glGetColorTableParameterfvSGI');
+    if not Assigned(glGetColorTableParameterfvSGI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SGI_texture_color_table: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SGI_texture_color_table', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_SUN_vertex: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_SUN_vertex', extstring) then
+  begin
+    @glColor4ubVertex2fSUN := SDL_GL_GetProcAddress('glColor4ubVertex2fSUN');
+    if not Assigned(glColor4ubVertex2fSUN) then Exit;
+    @glColor4ubVertex2fvSUN := SDL_GL_GetProcAddress('glColor4ubVertex2fvSUN');
+    if not Assigned(glColor4ubVertex2fvSUN) then Exit;
+    @glColor4ubVertex3fSUN := SDL_GL_GetProcAddress('glColor4ubVertex3fSUN');
+    if not Assigned(glColor4ubVertex3fSUN) then Exit;
+    @glColor4ubVertex3fvSUN := SDL_GL_GetProcAddress('glColor4ubVertex3fvSUN');
+    if not Assigned(glColor4ubVertex3fvSUN) then Exit;
+    @glColor3fVertex3fSUN := SDL_GL_GetProcAddress('glColor3fVertex3fSUN');
+    if not Assigned(glColor3fVertex3fSUN) then Exit;
+    @glColor3fVertex3fvSUN := SDL_GL_GetProcAddress('glColor3fVertex3fvSUN');
+    if not Assigned(glColor3fVertex3fvSUN) then Exit;
+    @glNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glNormal3fVertex3fSUN');
+    if not Assigned(glNormal3fVertex3fSUN) then Exit;
+    @glNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glNormal3fVertex3fvSUN');
+    if not Assigned(glNormal3fVertex3fvSUN) then Exit;
+    @glColor4fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glColor4fNormal3fVertex3fSUN');
+    if not Assigned(glColor4fNormal3fVertex3fSUN) then Exit;
+    @glColor4fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glColor4fNormal3fVertex3fvSUN');
+    if not Assigned(glColor4fNormal3fVertex3fvSUN) then Exit;
+    @glTexCoord2fVertex3fSUN := SDL_GL_GetProcAddress('glTexCoord2fVertex3fSUN');
+    if not Assigned(glTexCoord2fVertex3fSUN) then Exit;
+    @glTexCoord2fVertex3fvSUN := SDL_GL_GetProcAddress('glTexCoord2fVertex3fvSUN');
+    if not Assigned(glTexCoord2fVertex3fvSUN) then Exit;
+    @glTexCoord4fVertex4fSUN := SDL_GL_GetProcAddress('glTexCoord4fVertex4fSUN');
+    if not Assigned(glTexCoord4fVertex4fSUN) then Exit;
+    @glTexCoord4fVertex4fvSUN := SDL_GL_GetProcAddress('glTexCoord4fVertex4fvSUN');
+    if not Assigned(glTexCoord4fVertex4fvSUN) then Exit;
+    @glTexCoord2fColor4ubVertex3fSUN := SDL_GL_GetProcAddress('glTexCoord2fColor4ubVertex3fSUN');
+    if not Assigned(glTexCoord2fColor4ubVertex3fSUN) then Exit;
+    @glTexCoord2fColor4ubVertex3fvSUN := SDL_GL_GetProcAddress('glTexCoord2fColor4ubVertex3fvSUN');
+    if not Assigned(glTexCoord2fColor4ubVertex3fvSUN) then Exit;
+    @glTexCoord2fColor3fVertex3fSUN := SDL_GL_GetProcAddress('glTexCoord2fColor3fVertex3fSUN');
+    if not Assigned(glTexCoord2fColor3fVertex3fSUN) then Exit;
+    @glTexCoord2fColor3fVertex3fvSUN := SDL_GL_GetProcAddress('glTexCoord2fColor3fVertex3fvSUN');
+    if not Assigned(glTexCoord2fColor3fVertex3fvSUN) then Exit;
+    @glTexCoord2fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glTexCoord2fNormal3fVertex3fSUN');
+    if not Assigned(glTexCoord2fNormal3fVertex3fSUN) then Exit;
+    @glTexCoord2fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glTexCoord2fNormal3fVertex3fvSUN');
+    if not Assigned(glTexCoord2fNormal3fVertex3fvSUN) then Exit;
+    @glTexCoord2fColor4fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glTexCoord2fColor4fNormal3fVertex3fSUN');
+    if not Assigned(glTexCoord2fColor4fNormal3fVertex3fSUN) then Exit;
+    @glTexCoord2fColor4fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glTexCoord2fColor4fNormal3fVertex3fvSUN');
+    if not Assigned(glTexCoord2fColor4fNormal3fVertex3fvSUN) then Exit;
+    @glTexCoord4fColor4fNormal3fVertex4fSUN := SDL_GL_GetProcAddress('glTexCoord4fColor4fNormal3fVertex4fSUN');
+    if not Assigned(glTexCoord4fColor4fNormal3fVertex4fSUN) then Exit;
+    @glTexCoord4fColor4fNormal3fVertex4fvSUN := SDL_GL_GetProcAddress('glTexCoord4fColor4fNormal3fVertex4fvSUN');
+    if not Assigned(glTexCoord4fColor4fNormal3fVertex4fvSUN) then Exit;
+    @glReplacementCodeuiVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiVertex3fSUN');
+    if not Assigned(glReplacementCodeuiVertex3fSUN) then Exit;
+    @glReplacementCodeuiVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiVertex3fvSUN) then Exit;
+    @glReplacementCodeuiColor4ubVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor4ubVertex3fSUN');
+    if not Assigned(glReplacementCodeuiColor4ubVertex3fSUN) then Exit;
+    @glReplacementCodeuiColor4ubVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor4ubVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiColor4ubVertex3fvSUN) then Exit;
+    @glReplacementCodeuiColor3fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor3fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiColor3fVertex3fSUN) then Exit;
+    @glReplacementCodeuiColor3fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor3fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiColor3fVertex3fvSUN) then Exit;
+    @glReplacementCodeuiNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiNormal3fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiNormal3fVertex3fSUN) then Exit;
+    @glReplacementCodeuiNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiNormal3fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiNormal3fVertex3fvSUN) then Exit;
+    @glReplacementCodeuiColor4fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor4fNormal3fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiColor4fNormal3fVertex3fSUN) then Exit;
+    @glReplacementCodeuiColor4fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiColor4fNormal3fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiColor4fNormal3fVertex3fvSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fVertex3fSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fVertex3fvSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fNormal3fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fNormal3fVertex3fSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fNormal3fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fNormal3fVertex3fvSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fSUN) then Exit;
+    @glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fvSUN := SDL_GL_GetProcAddress('glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fvSUN');
+    if not Assigned(glReplacementCodeuiTexCoord2fColor4fNormal3fVertex3fvSUN) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_fragment_program: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_fragment_program', extstring) then
+  begin
+    @glProgramStringARB := SDL_GL_GetProcAddress('glProgramStringARB');
+    if not Assigned(glProgramStringARB) then Exit;
+    @glBindProgramARB := SDL_GL_GetProcAddress('glBindProgramARB');
+    if not Assigned(glBindProgramARB) then Exit;
+    @glDeleteProgramsARB := SDL_GL_GetProcAddress('glDeleteProgramsARB');
+    if not Assigned(glDeleteProgramsARB) then Exit;
+    @glGenProgramsARB := SDL_GL_GetProcAddress('glGenProgramsARB');
+    if not Assigned(glGenProgramsARB) then Exit;
+    @glProgramEnvParameter4dARB := SDL_GL_GetProcAddress('glProgramEnvParameter4dARB');
+    if not Assigned(glProgramEnvParameter4dARB) then Exit;
+    @glProgramEnvParameter4dvARB := SDL_GL_GetProcAddress('glProgramEnvParameter4dvARB');
+    if not Assigned(glProgramEnvParameter4dvARB) then Exit;
+    @glProgramEnvParameter4fARB := SDL_GL_GetProcAddress('glProgramEnvParameter4fARB');
+    if not Assigned(glProgramEnvParameter4fARB) then Exit;
+    @glProgramEnvParameter4fvARB := SDL_GL_GetProcAddress('glProgramEnvParameter4fvARB');
+    if not Assigned(glProgramEnvParameter4fvARB) then Exit;
+    @glProgramLocalParameter4dARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dARB');
+    if not Assigned(glProgramLocalParameter4dARB) then Exit;
+    @glProgramLocalParameter4dvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dvARB');
+    if not Assigned(glProgramLocalParameter4dvARB) then Exit;
+    @glProgramLocalParameter4fARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fARB');
+    if not Assigned(glProgramLocalParameter4fARB) then Exit;
+    @glProgramLocalParameter4fvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fvARB');
+    if not Assigned(glProgramLocalParameter4fvARB) then Exit;
+    @glGetProgramEnvParameterdvARB := SDL_GL_GetProcAddress('glGetProgramEnvParameterdvARB');
+    if not Assigned(glGetProgramEnvParameterdvARB) then Exit;
+    @glGetProgramEnvParameterfvARB := SDL_GL_GetProcAddress('glGetProgramEnvParameterfvARB');
+    if not Assigned(glGetProgramEnvParameterfvARB) then Exit;
+    @glGetProgramLocalParameterdvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterdvARB');
+    if not Assigned(glGetProgramLocalParameterdvARB) then Exit;
+    @glGetProgramLocalParameterfvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterfvARB');
+    if not Assigned(glGetProgramLocalParameterfvARB) then Exit;
+    @glGetProgramivARB := SDL_GL_GetProcAddress('glGetProgramivARB');
+    if not Assigned(glGetProgramivARB) then Exit;
+    @glGetProgramStringARB := SDL_GL_GetProcAddress('glGetProgramStringARB');
+    if not Assigned(glGetProgramStringARB) then Exit;
+    @glIsProgramARB := SDL_GL_GetProcAddress('glIsProgramARB');
+    if not Assigned(glIsProgramARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_text_fragment_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_text_fragment_shader', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_APPLE_client_storage: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_APPLE_client_storage', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_APPLE_element_array: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_APPLE_element_array', extstring) then
+  begin
+    @glElementPointerAPPLE := SDL_GL_GetProcAddress('glElementPointerAPPLE');
+    if not Assigned(glElementPointerAPPLE) then Exit;
+    @glDrawElementArrayAPPLE := SDL_GL_GetProcAddress('glDrawElementArrayAPPLE');
+    if not Assigned(glDrawElementArrayAPPLE) then Exit;
+    @glDrawRangeElementArrayAPPLE := SDL_GL_GetProcAddress('glDrawRangeElementArrayAPPLE');
+    if not Assigned(glDrawRangeElementArrayAPPLE) then Exit;
+    @glMultiDrawElementArrayAPPLE := SDL_GL_GetProcAddress('glMultiDrawElementArrayAPPLE');
+    if not Assigned(glMultiDrawElementArrayAPPLE) then Exit;
+    @glMultiDrawRangeElementArrayAPPLE := SDL_GL_GetProcAddress('glMultiDrawRangeElementArrayAPPLE');
+    if not Assigned(glMultiDrawRangeElementArrayAPPLE) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_APPLE_fence: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_APPLE_fence', extstring) then
+  begin
+    @glGenFencesAPPLE := SDL_GL_GetProcAddress('glGenFencesAPPLE');
+    if not Assigned(glGenFencesAPPLE) then Exit;
+    @glDeleteFencesAPPLE := SDL_GL_GetProcAddress('glDeleteFencesAPPLE');
+    if not Assigned(glDeleteFencesAPPLE) then Exit;
+    @glSetFenceAPPLE := SDL_GL_GetProcAddress('glSetFenceAPPLE');
+    if not Assigned(glSetFenceAPPLE) then Exit;
+    @glIsFenceAPPLE := SDL_GL_GetProcAddress('glIsFenceAPPLE');
+    if not Assigned(glIsFenceAPPLE) then Exit;
+    @glTestFenceAPPLE := SDL_GL_GetProcAddress('glTestFenceAPPLE');
+    if not Assigned(glTestFenceAPPLE) then Exit;
+    @glFinishFenceAPPLE := SDL_GL_GetProcAddress('glFinishFenceAPPLE');
+    if not Assigned(glFinishFenceAPPLE) then Exit;
+    @glTestObjectAPPLE := SDL_GL_GetProcAddress('glTestObjectAPPLE');
+    if not Assigned(glTestObjectAPPLE) then Exit;
+    @glFinishObjectAPPLE := SDL_GL_GetProcAddress('glFinishObjectAPPLE');
+    if not Assigned(glFinishObjectAPPLE) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_APPLE_vertex_array_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_APPLE_vertex_array_object', extstring) then
+  begin
+    @glBindVertexArrayAPPLE := SDL_GL_GetProcAddress('glBindVertexArrayAPPLE');
+    if not Assigned(glBindVertexArrayAPPLE) then Exit;
+    @glDeleteVertexArraysAPPLE := SDL_GL_GetProcAddress('glDeleteVertexArraysAPPLE');
+    if not Assigned(glDeleteVertexArraysAPPLE) then Exit;
+    @glGenVertexArraysAPPLE := SDL_GL_GetProcAddress('glGenVertexArraysAPPLE');
+    if not Assigned(glGenVertexArraysAPPLE) then Exit;
+    @glIsVertexArrayAPPLE := SDL_GL_GetProcAddress('glIsVertexArrayAPPLE');
+    if not Assigned(glIsVertexArrayAPPLE) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_APPLE_vertex_array_range: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_APPLE_vertex_array_range', extstring) then
+  begin
+    @glVertexArrayRangeAPPLE := SDL_GL_GetProcAddress('glVertexArrayRangeAPPLE');
+    if not Assigned(glVertexArrayRangeAPPLE) then Exit;
+    @glFlushVertexArrayRangeAPPLE := SDL_GL_GetProcAddress('glFlushVertexArrayRangeAPPLE');
+    if not Assigned(glFlushVertexArrayRangeAPPLE) then Exit;
+    @glVertexArrayParameteriAPPLE := SDL_GL_GetProcAddress('glVertexArrayParameteriAPPLE');
+    if not Assigned(glVertexArrayParameteriAPPLE) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+{$IFDEF WINDOWS}
+function Load_WGL_ARB_pixel_format: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_pixel_format', extstring) then
+  begin
+    @wglGetPixelFormatAttribivARB := SDL_GL_GetProcAddress('wglGetPixelFormatAttribivARB');
+    if not Assigned(wglGetPixelFormatAttribivARB) then Exit;
+    @wglGetPixelFormatAttribfvARB := SDL_GL_GetProcAddress('wglGetPixelFormatAttribfvARB');
+    if not Assigned(wglGetPixelFormatAttribfvARB) then Exit;
+    @wglChoosePixelFormatARB := SDL_GL_GetProcAddress('wglChoosePixelFormatARB');
+    if not Assigned(wglChoosePixelFormatARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_ARB_make_current_read: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_make_current_read', extstring) then
+  begin
+    @wglMakeContextCurrentARB := SDL_GL_GetProcAddress('wglMakeContextCurrentARB');
+    if not Assigned(wglMakeContextCurrentARB) then Exit;
+    @wglGetCurrentReadDCARB := SDL_GL_GetProcAddress('wglGetCurrentReadDCARB');
+    if not Assigned(wglGetCurrentReadDCARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_ARB_pbuffer: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_pbuffer', extstring) then
+  begin
+    @wglCreatePbufferARB := SDL_GL_GetProcAddress('wglCreatePbufferARB');
+    if not Assigned(wglCreatePbufferARB) then Exit;
+    @wglGetPbufferDCARB := SDL_GL_GetProcAddress('wglGetPbufferDCARB');
+    if not Assigned(wglGetPbufferDCARB) then Exit;
+    @wglReleasePbufferDCARB := SDL_GL_GetProcAddress('wglReleasePbufferDCARB');
+    if not Assigned(wglReleasePbufferDCARB) then Exit;
+    @wglDestroyPbufferARB := SDL_GL_GetProcAddress('wglDestroyPbufferARB');
+    if not Assigned(wglDestroyPbufferARB) then Exit;
+    @wglQueryPbufferARB := SDL_GL_GetProcAddress('wglQueryPbufferARB');
+    if not Assigned(wglQueryPbufferARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_EXT_swap_control: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_EXT_swap_control', extstring) then
+  begin
+    @wglSwapIntervalEXT := SDL_GL_GetProcAddress('wglSwapIntervalEXT');
+    if not Assigned(wglSwapIntervalEXT) then Exit;
+    @wglGetSwapIntervalEXT := SDL_GL_GetProcAddress('wglGetSwapIntervalEXT');
+    if not Assigned(wglGetSwapIntervalEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_ARB_render_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ARB_render_texture', extstring) then
+  begin
+    @wglBindTexImageARB := SDL_GL_GetProcAddress('wglBindTexImageARB');
+    if not Assigned(wglBindTexImageARB) then Exit;
+    @wglReleaseTexImageARB := SDL_GL_GetProcAddress('wglReleaseTexImageARB');
+    if not Assigned(wglReleaseTexImageARB) then Exit;
+    @wglSetPbufferAttribARB := SDL_GL_GetProcAddress('wglSetPbufferAttribARB');
+    if not Assigned(wglSetPbufferAttribARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_EXT_extensions_string: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_EXT_extensions_string', extstring) then
+  begin
+    @wglGetExtensionsStringEXT := SDL_GL_GetProcAddress('wglGetExtensionsStringEXT');
+    if not Assigned(wglGetExtensionsStringEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_EXT_make_current_read: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_EXT_make_current_read', extstring) then
+  begin
+    @wglMakeContextCurrentEXT := SDL_GL_GetProcAddress('wglMakeContextCurrentEXT');
+    if not Assigned(wglMakeContextCurrentEXT) then Exit;
+    @wglGetCurrentReadDCEXT := SDL_GL_GetProcAddress('wglGetCurrentReadDCEXT');
+    if not Assigned(wglGetCurrentReadDCEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_EXT_pbuffer: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_EXT_pbuffer', extstring) then
+  begin
+    @wglCreatePbufferEXT := SDL_GL_GetProcAddress('wglCreatePbufferEXT');
+    if not Assigned(wglCreatePbufferEXT) then Exit;
+    @wglGetPbufferDCEXT := SDL_GL_GetProcAddress('wglGetPbufferDCEXT');
+    if not Assigned(wglGetPbufferDCEXT) then Exit;
+    @wglReleasePbufferDCEXT := SDL_GL_GetProcAddress('wglReleasePbufferDCEXT');
+    if not Assigned(wglReleasePbufferDCEXT) then Exit;
+    @wglDestroyPbufferEXT := SDL_GL_GetProcAddress('wglDestroyPbufferEXT');
+    if not Assigned(wglDestroyPbufferEXT) then Exit;
+    @wglQueryPbufferEXT := SDL_GL_GetProcAddress('wglQueryPbufferEXT');
+    if not Assigned(wglQueryPbufferEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_EXT_pixel_format: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_EXT_pixel_format', extstring) then
+  begin
+    @wglGetPixelFormatAttribivEXT := SDL_GL_GetProcAddress('wglGetPixelFormatAttribivEXT');
+    if not Assigned(wglGetPixelFormatAttribivEXT) then Exit;
+    @wglGetPixelFormatAttribfvEXT := SDL_GL_GetProcAddress('wglGetPixelFormatAttribfvEXT');
+    if not Assigned(wglGetPixelFormatAttribfvEXT) then Exit;
+    @wglChoosePixelFormatEXT := SDL_GL_GetProcAddress('wglChoosePixelFormatEXT');
+    if not Assigned(wglChoosePixelFormatEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_I3D_digital_video_control: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_digital_video_control', extstring) then
+  begin
+    @wglGetDigitalVideoParametersI3D := SDL_GL_GetProcAddress('wglGetDigitalVideoParametersI3D');
+    if not Assigned(wglGetDigitalVideoParametersI3D) then Exit;
+    @wglSetDigitalVideoParametersI3D := SDL_GL_GetProcAddress('wglSetDigitalVideoParametersI3D');
+    if not Assigned(wglSetDigitalVideoParametersI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_I3D_gamma: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_gamma', extstring) then
+  begin
+    @wglGetGammaTableParametersI3D := SDL_GL_GetProcAddress('wglGetGammaTableParametersI3D');
+    if not Assigned(wglGetGammaTableParametersI3D) then Exit;
+    @wglSetGammaTableParametersI3D := SDL_GL_GetProcAddress('wglSetGammaTableParametersI3D');
+    if not Assigned(wglSetGammaTableParametersI3D) then Exit;
+    @wglGetGammaTableI3D := SDL_GL_GetProcAddress('wglGetGammaTableI3D');
+    if not Assigned(wglGetGammaTableI3D) then Exit;
+    @wglSetGammaTableI3D := SDL_GL_GetProcAddress('wglSetGammaTableI3D');
+    if not Assigned(wglSetGammaTableI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_WGL_I3D_genlock: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_I3D_genlock', extstring) then
+  begin
+    @wglEnableGenlockI3D := SDL_GL_GetProcAddress('wglEnableGenlockI3D');
+    if not Assigned(wglEnableGenlockI3D) then Exit;
+    @wglDisableGenlockI3D := SDL_GL_GetProcAddress('wglDisableGenlockI3D');
+    if not Assigned(wglDisableGenlockI3D) then Exit;
+    @wglIsEnabledGenlockI3D := SDL_GL_GetProcAddress('wglIsEnabledGenlockI3D');
+    if not Assigned(wglIsEnabledGenlockI3D) then Exit;
+    @wglGenlockSourceI3D := SDL_GL_GetProcAddress('wglGenlockSourceI3D');
+    if not Assigned(wglGenlockSourceI3D) then Exit;
+    @wglGetGenlockSourceI3D := SDL_GL_GetProcAddress('wglGetGenlockSourceI3D');
+    if not Assigned(wglGetGenlockSourceI3D) then Exit;
+    @wglGenlockSourceEdgeI3D := SDL_GL_GetProcAddress('wglGenlockSourceEdgeI3D');
+    if not Assigned(wglGenlockSourceEdgeI3D) then Exit;
+    @wglGetGenlockSourceEdgeI3D := SDL_GL_GetProcAddress('wglGetGenlockSourceEdgeI3D');
+    if not Assigned(wglGetGenlockSourceEdgeI3D) then Exit;
+    @wglGenlockSampleRateI3D := SDL_GL_GetProcAddress('wglGenlockSampleRateI3D');
+    if not Assigned(wglGenlockSampleRateI3D) then Exit;
+    @wglGetGenlockSampleRateI3D := SDL_GL_GetProcAddress('wglGetGenlockSampleRateI3D');
+    if not Assigned(wglGetGenlockSampleRateI3D) then Exit;
+    @wglGenlockSourceDelayI3D := SDL_GL_GetProcAddress('wglGenlockSourceDelayI3D');
+    if not Assigned(wglGenlockSourceDelayI3D) then Exit;
+    @wglGetGenlockSourceDelayI3D := SDL_GL_GetProcAddress('wglGetGenlockSourceDelayI3D');
+    if not Assigned(wglGetGenlockSourceDelayI3D) then Exit;
+    @wglQueryGenlockMaxSourceDelayI3D := SDL_GL_GetProcAddress('wglQueryGenlockMaxSourceDelayI3D');
+    if not Assigned(wglQueryGenlockMaxSourceDelayI3D) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+{$ENDIF}
+
+function Load_GL_ARB_matrix_palette: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_matrix_palette', extstring) then
+  begin
+    @glCurrentPaletteMatrixARB := SDL_GL_GetProcAddress('glCurrentPaletteMatrixARB');
+    if not Assigned(glCurrentPaletteMatrixARB) then Exit;
+    @glMatrixIndexubvARB := SDL_GL_GetProcAddress('glMatrixIndexubvARB');
+    if not Assigned(glMatrixIndexubvARB) then Exit;
+    @glMatrixIndexusvARB := SDL_GL_GetProcAddress('glMatrixIndexusvARB');
+    if not Assigned(glMatrixIndexusvARB) then Exit;
+    @glMatrixIndexuivARB := SDL_GL_GetProcAddress('glMatrixIndexuivARB');
+    if not Assigned(glMatrixIndexuivARB) then Exit;
+    @glMatrixIndexPointerARB := SDL_GL_GetProcAddress('glMatrixIndexPointerARB');
+    if not Assigned(glMatrixIndexPointerARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_element_array: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_element_array', extstring) then
+  begin
+    @glElementPointerNV := SDL_GL_GetProcAddress('glElementPointerNV');
+    if not Assigned(glElementPointerNV) then Exit;
+    @glDrawElementArrayNV := SDL_GL_GetProcAddress('glDrawElementArrayNV');
+    if not Assigned(glDrawElementArrayNV) then Exit;
+    @glDrawRangeElementArrayNV := SDL_GL_GetProcAddress('glDrawRangeElementArrayNV');
+    if not Assigned(glDrawRangeElementArrayNV) then Exit;
+    @glMultiDrawElementArrayNV := SDL_GL_GetProcAddress('glMultiDrawElementArrayNV');
+    if not Assigned(glMultiDrawElementArrayNV) then Exit;
+    @glMultiDrawRangeElementArrayNV := SDL_GL_GetProcAddress('glMultiDrawRangeElementArrayNV');
+    if not Assigned(glMultiDrawRangeElementArrayNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_float_buffer: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_float_buffer', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_fragment_program: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_fragment_program', extstring) then
+  begin
+    @glProgramNamedParameter4fNV := SDL_GL_GetProcAddress('glProgramNamedParameter4fNV');
+    if not Assigned(glProgramNamedParameter4fNV) then Exit;
+    @glProgramNamedParameter4dNV := SDL_GL_GetProcAddress('glProgramNamedParameter4dNV');
+    if not Assigned(glProgramNamedParameter4dNV) then Exit;
+    @glGetProgramNamedParameterfvNV := SDL_GL_GetProcAddress('glGetProgramNamedParameterfvNV');
+    if not Assigned(glGetProgramNamedParameterfvNV) then Exit;
+    @glGetProgramNamedParameterdvNV := SDL_GL_GetProcAddress('glGetProgramNamedParameterdvNV');
+    if not Assigned(glGetProgramNamedParameterdvNV) then Exit;
+    @glProgramLocalParameter4dARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dARB');
+    if not Assigned(glProgramLocalParameter4dARB) then Exit;
+    @glProgramLocalParameter4dvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4dvARB');
+    if not Assigned(glProgramLocalParameter4dvARB) then Exit;
+    @glProgramLocalParameter4fARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fARB');
+    if not Assigned(glProgramLocalParameter4fARB) then Exit;
+    @glProgramLocalParameter4fvARB := SDL_GL_GetProcAddress('glProgramLocalParameter4fvARB');
+    if not Assigned(glProgramLocalParameter4fvARB) then Exit;
+    @glGetProgramLocalParameterdvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterdvARB');
+    if not Assigned(glGetProgramLocalParameterdvARB) then Exit;
+    @glGetProgramLocalParameterfvARB := SDL_GL_GetProcAddress('glGetProgramLocalParameterfvARB');
+    if not Assigned(glGetProgramLocalParameterfvARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_primitive_restart: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_primitive_restart', extstring) then
+  begin
+    @glPrimitiveRestartNV := SDL_GL_GetProcAddress('glPrimitiveRestartNV');
+    if not Assigned(glPrimitiveRestartNV) then Exit;
+    @glPrimitiveRestartIndexNV := SDL_GL_GetProcAddress('glPrimitiveRestartIndexNV');
+    if not Assigned(glPrimitiveRestartIndexNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_program2: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_program2', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+{$IFDEF WINDOWS}
+function Load_WGL_NV_render_texture_rectangle: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_NV_render_texture_rectangle', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+{$ENDIF}
+
+function Load_GL_NV_pixel_data_range: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_pixel_data_range', extstring) then
+  begin
+    @glPixelDataRangeNV := SDL_GL_GetProcAddress('glPixelDataRangeNV');
+    if not Assigned(glPixelDataRangeNV) then Exit;
+    @glFlushPixelDataRangeNV := SDL_GL_GetProcAddress('glFlushPixelDataRangeNV');
+    if not Assigned(glFlushPixelDataRangeNV) then Exit;
+    {$IFDEF WINDOWS}
+    @wglAllocateMemoryNV := SDL_GL_GetProcAddress('wglAllocateMemoryNV');
+    if not Assigned(wglAllocateMemoryNV) then Exit;
+    @wglFreeMemoryNV := SDL_GL_GetProcAddress('wglFreeMemoryNV');
+    if not Assigned(wglFreeMemoryNV) then Exit;
+    {$ENDIF}
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_rectangle: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_rectangle', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_S3_s3tc: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_S3_s3tc', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_draw_buffers: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_draw_buffers', extstring) then
+  begin
+    @glDrawBuffersATI := SDL_GL_GetProcAddress('glDrawBuffersATI');
+    if not Assigned(glDrawBuffersATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+{$IFDEF WINDOWS}
+function Load_WGL_ATI_pixel_format_float: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  @wglGetExtensionsStringARB := SDL_GL_GetProcAddress('wglGetExtensionsStringARB');
+  if not Assigned(wglGetExtensionsStringARB) then Exit;
+  extstring := wglGetExtensionsStringARB(wglGetCurrentDC);
+
+  if glext_ExtensionSupported('WGL_ATI_pixel_format_float', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+{$ENDIF}
+
+function Load_GL_ATI_texture_env_combine3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_texture_env_combine3', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_texture_float: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_texture_float', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_texture_expand_normal: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_texture_expand_normal', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_half_float: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_half_float', extstring) then
+  begin
+    @glVertex2hNV := SDL_GL_GetProcAddress('glVertex2hNV');
+    if not Assigned(glVertex2hNV) then Exit;
+    @glVertex2hvNV := SDL_GL_GetProcAddress('glVertex2hvNV');
+    if not Assigned(glVertex2hvNV) then Exit;
+    @glVertex3hNV := SDL_GL_GetProcAddress('glVertex3hNV');
+    if not Assigned(glVertex3hNV) then Exit;
+    @glVertex3hvNV := SDL_GL_GetProcAddress('glVertex3hvNV');
+    if not Assigned(glVertex3hvNV) then Exit;
+    @glVertex4hNV := SDL_GL_GetProcAddress('glVertex4hNV');
+    if not Assigned(glVertex4hNV) then Exit;
+    @glVertex4hvNV := SDL_GL_GetProcAddress('glVertex4hvNV');
+    if not Assigned(glVertex4hvNV) then Exit;
+    @glNormal3hNV := SDL_GL_GetProcAddress('glNormal3hNV');
+    if not Assigned(glNormal3hNV) then Exit;
+    @glNormal3hvNV := SDL_GL_GetProcAddress('glNormal3hvNV');
+    if not Assigned(glNormal3hvNV) then Exit;
+    @glColor3hNV := SDL_GL_GetProcAddress('glColor3hNV');
+    if not Assigned(glColor3hNV) then Exit;
+    @glColor3hvNV := SDL_GL_GetProcAddress('glColor3hvNV');
+    if not Assigned(glColor3hvNV) then Exit;
+    @glColor4hNV := SDL_GL_GetProcAddress('glColor4hNV');
+    if not Assigned(glColor4hNV) then Exit;
+    @glColor4hvNV := SDL_GL_GetProcAddress('glColor4hvNV');
+    if not Assigned(glColor4hvNV) then Exit;
+    @glTexCoord1hNV := SDL_GL_GetProcAddress('glTexCoord1hNV');
+    if not Assigned(glTexCoord1hNV) then Exit;
+    @glTexCoord1hvNV := SDL_GL_GetProcAddress('glTexCoord1hvNV');
+    if not Assigned(glTexCoord1hvNV) then Exit;
+    @glTexCoord2hNV := SDL_GL_GetProcAddress('glTexCoord2hNV');
+    if not Assigned(glTexCoord2hNV) then Exit;
+    @glTexCoord2hvNV := SDL_GL_GetProcAddress('glTexCoord2hvNV');
+    if not Assigned(glTexCoord2hvNV) then Exit;
+    @glTexCoord3hNV := SDL_GL_GetProcAddress('glTexCoord3hNV');
+    if not Assigned(glTexCoord3hNV) then Exit;
+    @glTexCoord3hvNV := SDL_GL_GetProcAddress('glTexCoord3hvNV');
+    if not Assigned(glTexCoord3hvNV) then Exit;
+    @glTexCoord4hNV := SDL_GL_GetProcAddress('glTexCoord4hNV');
+    if not Assigned(glTexCoord4hNV) then Exit;
+    @glTexCoord4hvNV := SDL_GL_GetProcAddress('glTexCoord4hvNV');
+    if not Assigned(glTexCoord4hvNV) then Exit;
+    @glMultiTexCoord1hNV := SDL_GL_GetProcAddress('glMultiTexCoord1hNV');
+    if not Assigned(glMultiTexCoord1hNV) then Exit;
+    @glMultiTexCoord1hvNV := SDL_GL_GetProcAddress('glMultiTexCoord1hvNV');
+    if not Assigned(glMultiTexCoord1hvNV) then Exit;
+    @glMultiTexCoord2hNV := SDL_GL_GetProcAddress('glMultiTexCoord2hNV');
+    if not Assigned(glMultiTexCoord2hNV) then Exit;
+    @glMultiTexCoord2hvNV := SDL_GL_GetProcAddress('glMultiTexCoord2hvNV');
+    if not Assigned(glMultiTexCoord2hvNV) then Exit;
+    @glMultiTexCoord3hNV := SDL_GL_GetProcAddress('glMultiTexCoord3hNV');
+    if not Assigned(glMultiTexCoord3hNV) then Exit;
+    @glMultiTexCoord3hvNV := SDL_GL_GetProcAddress('glMultiTexCoord3hvNV');
+    if not Assigned(glMultiTexCoord3hvNV) then Exit;
+    @glMultiTexCoord4hNV := SDL_GL_GetProcAddress('glMultiTexCoord4hNV');
+    if not Assigned(glMultiTexCoord4hNV) then Exit;
+    @glMultiTexCoord4hvNV := SDL_GL_GetProcAddress('glMultiTexCoord4hvNV');
+    if not Assigned(glMultiTexCoord4hvNV) then Exit;
+    @glFogCoordhNV := SDL_GL_GetProcAddress('glFogCoordhNV');
+    if not Assigned(glFogCoordhNV) then Exit;
+    @glFogCoordhvNV := SDL_GL_GetProcAddress('glFogCoordhvNV');
+    if not Assigned(glFogCoordhvNV) then Exit;
+    @glSecondaryColor3hNV := SDL_GL_GetProcAddress('glSecondaryColor3hNV');
+    if not Assigned(glSecondaryColor3hNV) then Exit;
+    @glSecondaryColor3hvNV := SDL_GL_GetProcAddress('glSecondaryColor3hvNV');
+    if not Assigned(glSecondaryColor3hvNV) then Exit;
+    @glVertexWeighthNV := SDL_GL_GetProcAddress('glVertexWeighthNV');
+    if not Assigned(glVertexWeighthNV) then Exit;
+    @glVertexWeighthvNV := SDL_GL_GetProcAddress('glVertexWeighthvNV');
+    if not Assigned(glVertexWeighthvNV) then Exit;
+    @glVertexAttrib1hNV := SDL_GL_GetProcAddress('glVertexAttrib1hNV');
+    if not Assigned(glVertexAttrib1hNV) then Exit;
+    @glVertexAttrib1hvNV := SDL_GL_GetProcAddress('glVertexAttrib1hvNV');
+    if not Assigned(glVertexAttrib1hvNV) then Exit;
+    @glVertexAttrib2hNV := SDL_GL_GetProcAddress('glVertexAttrib2hNV');
+    if not Assigned(glVertexAttrib2hNV) then Exit;
+    @glVertexAttrib2hvNV := SDL_GL_GetProcAddress('glVertexAttrib2hvNV');
+    if not Assigned(glVertexAttrib2hvNV) then Exit;
+    @glVertexAttrib3hNV := SDL_GL_GetProcAddress('glVertexAttrib3hNV');
+    if not Assigned(glVertexAttrib3hNV) then Exit;
+    @glVertexAttrib3hvNV := SDL_GL_GetProcAddress('glVertexAttrib3hvNV');
+    if not Assigned(glVertexAttrib3hvNV) then Exit;
+    @glVertexAttrib4hNV := SDL_GL_GetProcAddress('glVertexAttrib4hNV');
+    if not Assigned(glVertexAttrib4hNV) then Exit;
+    @glVertexAttrib4hvNV := SDL_GL_GetProcAddress('glVertexAttrib4hvNV');
+    if not Assigned(glVertexAttrib4hvNV) then Exit;
+    @glVertexAttribs1hvNV := SDL_GL_GetProcAddress('glVertexAttribs1hvNV');
+    if not Assigned(glVertexAttribs1hvNV) then Exit;
+    @glVertexAttribs2hvNV := SDL_GL_GetProcAddress('glVertexAttribs2hvNV');
+    if not Assigned(glVertexAttribs2hvNV) then Exit;
+    @glVertexAttribs3hvNV := SDL_GL_GetProcAddress('glVertexAttribs3hvNV');
+    if not Assigned(glVertexAttribs3hvNV) then Exit;
+    @glVertexAttribs4hvNV := SDL_GL_GetProcAddress('glVertexAttribs4hvNV');
+    if not Assigned(glVertexAttribs4hvNV) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_map_object_buffer: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_map_object_buffer', extstring) then
+  begin
+    @glMapObjectBufferATI := SDL_GL_GetProcAddress('glMapObjectBufferATI');
+    if not Assigned(glMapObjectBufferATI) then Exit;
+    @glUnmapObjectBufferATI := SDL_GL_GetProcAddress('glUnmapObjectBufferATI');
+    if not Assigned(glUnmapObjectBufferATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_separate_stencil: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_separate_stencil', extstring) then
+  begin
+    @glStencilOpSeparateATI := SDL_GL_GetProcAddress('glStencilOpSeparateATI');
+    if not Assigned(glStencilOpSeparateATI) then Exit;
+    @glStencilFuncSeparateATI := SDL_GL_GetProcAddress('glStencilFuncSeparateATI');
+    if not Assigned(glStencilFuncSeparateATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ATI_vertex_attrib_array_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ATI_vertex_attrib_array_object', extstring) then
+  begin
+    @glVertexAttribArrayObjectATI := SDL_GL_GetProcAddress('glVertexAttribArrayObjectATI');
+    if not Assigned(glVertexAttribArrayObjectATI) then Exit;
+    @glGetVertexAttribArrayObjectfvATI := SDL_GL_GetProcAddress('glGetVertexAttribArrayObjectfvATI');
+    if not Assigned(glGetVertexAttribArrayObjectfvATI) then Exit;
+    @glGetVertexAttribArrayObjectivATI := SDL_GL_GetProcAddress('glGetVertexAttribArrayObjectivATI');
+    if not Assigned(glGetVertexAttribArrayObjectivATI) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_vertex_buffer_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_vertex_buffer_object', extstring) then
+  begin
+    @glBindBufferARB := SDL_GL_GetProcAddress('glBindBufferARB');
+    if not Assigned(glBindBufferARB) then Exit;
+    @glDeleteBuffersARB := SDL_GL_GetProcAddress('glDeleteBuffersARB');
+    if not Assigned(glDeleteBuffersARB) then Exit;
+    @glGenBuffersARB := SDL_GL_GetProcAddress('glGenBuffersARB');
+    if not Assigned(glGenBuffersARB) then Exit;
+    @glIsBufferARB := SDL_GL_GetProcAddress('glIsBufferARB');
+    if not Assigned(glIsBufferARB) then Exit;
+    @glBufferDataARB := SDL_GL_GetProcAddress('glBufferDataARB');
+    if not Assigned(glBufferDataARB) then Exit;
+    @glBufferSubDataARB := SDL_GL_GetProcAddress('glBufferSubDataARB');
+    if not Assigned(glBufferSubDataARB) then Exit;
+    @glGetBufferSubDataARB := SDL_GL_GetProcAddress('glGetBufferSubDataARB');
+    if not Assigned(glGetBufferSubDataARB) then Exit;
+    @glMapBufferARB := SDL_GL_GetProcAddress('glMapBufferARB');
+    if not Assigned(glMapBufferARB) then Exit;
+    @glUnmapBufferARB := SDL_GL_GetProcAddress('glUnmapBufferARB');
+    if not Assigned(glUnmapBufferARB) then Exit;
+    @glGetBufferParameterivARB := SDL_GL_GetProcAddress('glGetBufferParameterivARB');
+    if not Assigned(glGetBufferParameterivARB) then Exit;
+    @glGetBufferPointervARB := SDL_GL_GetProcAddress('glGetBufferPointervARB');
+    if not Assigned(glGetBufferPointervARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_occlusion_query: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_occlusion_query', extstring) then
+  begin
+    @glGenQueriesARB := SDL_GL_GetProcAddress('glGenQueriesARB');
+    if not Assigned(glGenQueriesARB) then Exit;
+    @glDeleteQueriesARB := SDL_GL_GetProcAddress('glDeleteQueriesARB');
+    if not Assigned(glDeleteQueriesARB) then Exit;
+    @glIsQueryARB := SDL_GL_GetProcAddress('glIsQueryARB');
+    if not Assigned(glIsQueryARB) then Exit;
+    @glBeginQueryARB := SDL_GL_GetProcAddress('glBeginQueryARB');
+    if not Assigned(glBeginQueryARB) then Exit;
+    @glEndQueryARB := SDL_GL_GetProcAddress('glEndQueryARB');
+    if not Assigned(glEndQueryARB) then Exit;
+    @glGetQueryivARB := SDL_GL_GetProcAddress('glGetQueryivARB');
+    if not Assigned(glGetQueryivARB) then Exit;
+    @glGetQueryObjectivARB := SDL_GL_GetProcAddress('glGetQueryObjectivARB');
+    if not Assigned(glGetQueryObjectivARB) then Exit;
+    @glGetQueryObjectuivARB := SDL_GL_GetProcAddress('glGetQueryObjectuivARB');
+    if not Assigned(glGetQueryObjectuivARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_shader_objects: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_shader_objects', extstring) then
+  begin
+    @glDeleteObjectARB := SDL_GL_GetProcAddress('glDeleteObjectARB');
+    if not Assigned(glDeleteObjectARB) then Exit;
+    @glGetHandleARB := SDL_GL_GetProcAddress('glGetHandleARB');
+    if not Assigned(glGetHandleARB) then Exit;
+    @glDetachObjectARB := SDL_GL_GetProcAddress('glDetachObjectARB');
+    if not Assigned(glDetachObjectARB) then Exit;
+    @glCreateShaderObjectARB := SDL_GL_GetProcAddress('glCreateShaderObjectARB');
+    if not Assigned(glCreateShaderObjectARB) then Exit;
+    @glShaderSourceARB := SDL_GL_GetProcAddress('glShaderSourceARB');
+    if not Assigned(glShaderSourceARB) then Exit;
+    @glCompileShaderARB := SDL_GL_GetProcAddress('glCompileShaderARB');
+    if not Assigned(glCompileShaderARB) then Exit;
+    @glCreateProgramObjectARB := SDL_GL_GetProcAddress('glCreateProgramObjectARB');
+    if not Assigned(glCreateProgramObjectARB) then Exit;
+    @glAttachObjectARB := SDL_GL_GetProcAddress('glAttachObjectARB');
+    if not Assigned(glAttachObjectARB) then Exit;
+    @glLinkProgramARB := SDL_GL_GetProcAddress('glLinkProgramARB');
+    if not Assigned(glLinkProgramARB) then Exit;
+    @glUseProgramObjectARB := SDL_GL_GetProcAddress('glUseProgramObjectARB');
+    if not Assigned(glUseProgramObjectARB) then Exit;
+    @glValidateProgramARB := SDL_GL_GetProcAddress('glValidateProgramARB');
+    if not Assigned(glValidateProgramARB) then Exit;
+    @glUniform1fARB := SDL_GL_GetProcAddress('glUniform1fARB');
+    if not Assigned(glUniform1fARB) then Exit;
+    @glUniform2fARB := SDL_GL_GetProcAddress('glUniform2fARB');
+    if not Assigned(glUniform2fARB) then Exit;
+    @glUniform3fARB := SDL_GL_GetProcAddress('glUniform3fARB');
+    if not Assigned(glUniform3fARB) then Exit;
+    @glUniform4fARB := SDL_GL_GetProcAddress('glUniform4fARB');
+    if not Assigned(glUniform4fARB) then Exit;
+    @glUniform1iARB := SDL_GL_GetProcAddress('glUniform1iARB');
+    if not Assigned(glUniform1iARB) then Exit;
+    @glUniform2iARB := SDL_GL_GetProcAddress('glUniform2iARB');
+    if not Assigned(glUniform2iARB) then Exit;
+    @glUniform3iARB := SDL_GL_GetProcAddress('glUniform3iARB');
+    if not Assigned(glUniform3iARB) then Exit;
+    @glUniform4iARB := SDL_GL_GetProcAddress('glUniform4iARB');
+    if not Assigned(glUniform4iARB) then Exit;
+    @glUniform1fvARB := SDL_GL_GetProcAddress('glUniform1fvARB');
+    if not Assigned(glUniform1fvARB) then Exit;
+    @glUniform2fvARB := SDL_GL_GetProcAddress('glUniform2fvARB');
+    if not Assigned(glUniform2fvARB) then Exit;
+    @glUniform3fvARB := SDL_GL_GetProcAddress('glUniform3fvARB');
+    if not Assigned(glUniform3fvARB) then Exit;
+    @glUniform4fvARB := SDL_GL_GetProcAddress('glUniform4fvARB');
+    if not Assigned(glUniform4fvARB) then Exit;
+    @glUniform1ivARB := SDL_GL_GetProcAddress('glUniform1ivARB');
+    if not Assigned(glUniform1ivARB) then Exit;
+    @glUniform2ivARB := SDL_GL_GetProcAddress('glUniform2ivARB');
+    if not Assigned(glUniform2ivARB) then Exit;
+    @glUniform3ivARB := SDL_GL_GetProcAddress('glUniform3ivARB');
+    if not Assigned(glUniform3ivARB) then Exit;
+    @glUniform4ivARB := SDL_GL_GetProcAddress('glUniform4ivARB');
+    if not Assigned(glUniform4ivARB) then Exit;
+    @glUniformMatrix2fvARB := SDL_GL_GetProcAddress('glUniformMatrix2fvARB');
+    if not Assigned(glUniformMatrix2fvARB) then Exit;
+    @glUniformMatrix3fvARB := SDL_GL_GetProcAddress('glUniformMatrix3fvARB');
+    if not Assigned(glUniformMatrix3fvARB) then Exit;
+    @glUniformMatrix4fvARB := SDL_GL_GetProcAddress('glUniformMatrix4fvARB');
+    if not Assigned(glUniformMatrix4fvARB) then Exit;
+    @glGetObjectParameterfvARB := SDL_GL_GetProcAddress('glGetObjectParameterfvARB');
+    if not Assigned(glGetObjectParameterfvARB) then Exit;
+    @glGetObjectParameterivARB := SDL_GL_GetProcAddress('glGetObjectParameterivARB');
+    if not Assigned(glGetObjectParameterivARB) then Exit;
+    @glGetInfoLogARB := SDL_GL_GetProcAddress('glGetInfoLogARB');
+    if not Assigned(glGetInfoLogARB) then Exit;
+    @glGetAttachedObjectsARB := SDL_GL_GetProcAddress('glGetAttachedObjectsARB');
+    if not Assigned(glGetAttachedObjectsARB) then Exit;
+    @glGetUniformLocationARB := SDL_GL_GetProcAddress('glGetUniformLocationARB');
+    if not Assigned(glGetUniformLocationARB) then Exit;
+    @glGetActiveUniformARB := SDL_GL_GetProcAddress('glGetActiveUniformARB');
+    if not Assigned(glGetActiveUniformARB) then Exit;
+    @glGetUniformfvARB := SDL_GL_GetProcAddress('glGetUniformfvARB');
+    if not Assigned(glGetUniformfvARB) then Exit;
+    @glGetUniformivARB := SDL_GL_GetProcAddress('glGetUniformivARB');
+    if not Assigned(glGetUniformivARB) then Exit;
+    @glGetShaderSourceARB := SDL_GL_GetProcAddress('glGetShaderSourceARB');
+    if not Assigned(glGetShaderSourceARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_vertex_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_vertex_shader', extstring) then
+  begin
+    @glVertexAttrib1fARB := SDL_GL_GetProcAddress('glVertexAttrib1fARB');
+    if not Assigned(glVertexAttrib1fARB) then Exit;
+    @glVertexAttrib1sARB := SDL_GL_GetProcAddress('glVertexAttrib1sARB');
+    if not Assigned(glVertexAttrib1sARB) then Exit;
+    @glVertexAttrib1dARB := SDL_GL_GetProcAddress('glVertexAttrib1dARB');
+    if not Assigned(glVertexAttrib1dARB) then Exit;
+    @glVertexAttrib2fARB := SDL_GL_GetProcAddress('glVertexAttrib2fARB');
+    if not Assigned(glVertexAttrib2fARB) then Exit;
+    @glVertexAttrib2sARB := SDL_GL_GetProcAddress('glVertexAttrib2sARB');
+    if not Assigned(glVertexAttrib2sARB) then Exit;
+    @glVertexAttrib2dARB := SDL_GL_GetProcAddress('glVertexAttrib2dARB');
+    if not Assigned(glVertexAttrib2dARB) then Exit;
+    @glVertexAttrib3fARB := SDL_GL_GetProcAddress('glVertexAttrib3fARB');
+    if not Assigned(glVertexAttrib3fARB) then Exit;
+    @glVertexAttrib3sARB := SDL_GL_GetProcAddress('glVertexAttrib3sARB');
+    if not Assigned(glVertexAttrib3sARB) then Exit;
+    @glVertexAttrib3dARB := SDL_GL_GetProcAddress('glVertexAttrib3dARB');
+    if not Assigned(glVertexAttrib3dARB) then Exit;
+    @glVertexAttrib4fARB := SDL_GL_GetProcAddress('glVertexAttrib4fARB');
+    if not Assigned(glVertexAttrib4fARB) then Exit;
+    @glVertexAttrib4sARB := SDL_GL_GetProcAddress('glVertexAttrib4sARB');
+    if not Assigned(glVertexAttrib4sARB) then Exit;
+    @glVertexAttrib4dARB := SDL_GL_GetProcAddress('glVertexAttrib4dARB');
+    if not Assigned(glVertexAttrib4dARB) then Exit;
+    @glVertexAttrib4NubARB := SDL_GL_GetProcAddress('glVertexAttrib4NubARB');
+    if not Assigned(glVertexAttrib4NubARB) then Exit;
+    @glVertexAttrib1fvARB := SDL_GL_GetProcAddress('glVertexAttrib1fvARB');
+    if not Assigned(glVertexAttrib1fvARB) then Exit;
+    @glVertexAttrib1svARB := SDL_GL_GetProcAddress('glVertexAttrib1svARB');
+    if not Assigned(glVertexAttrib1svARB) then Exit;
+    @glVertexAttrib1dvARB := SDL_GL_GetProcAddress('glVertexAttrib1dvARB');
+    if not Assigned(glVertexAttrib1dvARB) then Exit;
+    @glVertexAttrib2fvARB := SDL_GL_GetProcAddress('glVertexAttrib2fvARB');
+    if not Assigned(glVertexAttrib2fvARB) then Exit;
+    @glVertexAttrib2svARB := SDL_GL_GetProcAddress('glVertexAttrib2svARB');
+    if not Assigned(glVertexAttrib2svARB) then Exit;
+    @glVertexAttrib2dvARB := SDL_GL_GetProcAddress('glVertexAttrib2dvARB');
+    if not Assigned(glVertexAttrib2dvARB) then Exit;
+    @glVertexAttrib3fvARB := SDL_GL_GetProcAddress('glVertexAttrib3fvARB');
+    if not Assigned(glVertexAttrib3fvARB) then Exit;
+    @glVertexAttrib3svARB := SDL_GL_GetProcAddress('glVertexAttrib3svARB');
+    if not Assigned(glVertexAttrib3svARB) then Exit;
+    @glVertexAttrib3dvARB := SDL_GL_GetProcAddress('glVertexAttrib3dvARB');
+    if not Assigned(glVertexAttrib3dvARB) then Exit;
+    @glVertexAttrib4fvARB := SDL_GL_GetProcAddress('glVertexAttrib4fvARB');
+    if not Assigned(glVertexAttrib4fvARB) then Exit;
+    @glVertexAttrib4svARB := SDL_GL_GetProcAddress('glVertexAttrib4svARB');
+    if not Assigned(glVertexAttrib4svARB) then Exit;
+    @glVertexAttrib4dvARB := SDL_GL_GetProcAddress('glVertexAttrib4dvARB');
+    if not Assigned(glVertexAttrib4dvARB) then Exit;
+    @glVertexAttrib4ivARB := SDL_GL_GetProcAddress('glVertexAttrib4ivARB');
+    if not Assigned(glVertexAttrib4ivARB) then Exit;
+    @glVertexAttrib4bvARB := SDL_GL_GetProcAddress('glVertexAttrib4bvARB');
+    if not Assigned(glVertexAttrib4bvARB) then Exit;
+    @glVertexAttrib4ubvARB := SDL_GL_GetProcAddress('glVertexAttrib4ubvARB');
+    if not Assigned(glVertexAttrib4ubvARB) then Exit;
+    @glVertexAttrib4usvARB := SDL_GL_GetProcAddress('glVertexAttrib4usvARB');
+    if not Assigned(glVertexAttrib4usvARB) then Exit;
+    @glVertexAttrib4uivARB := SDL_GL_GetProcAddress('glVertexAttrib4uivARB');
+    if not Assigned(glVertexAttrib4uivARB) then Exit;
+    @glVertexAttrib4NbvARB := SDL_GL_GetProcAddress('glVertexAttrib4NbvARB');
+    if not Assigned(glVertexAttrib4NbvARB) then Exit;
+    @glVertexAttrib4NsvARB := SDL_GL_GetProcAddress('glVertexAttrib4NsvARB');
+    if not Assigned(glVertexAttrib4NsvARB) then Exit;
+    @glVertexAttrib4NivARB := SDL_GL_GetProcAddress('glVertexAttrib4NivARB');
+    if not Assigned(glVertexAttrib4NivARB) then Exit;
+    @glVertexAttrib4NubvARB := SDL_GL_GetProcAddress('glVertexAttrib4NubvARB');
+    if not Assigned(glVertexAttrib4NubvARB) then Exit;
+    @glVertexAttrib4NusvARB := SDL_GL_GetProcAddress('glVertexAttrib4NusvARB');
+    if not Assigned(glVertexAttrib4NusvARB) then Exit;
+    @glVertexAttrib4NuivARB := SDL_GL_GetProcAddress('glVertexAttrib4NuivARB');
+    if not Assigned(glVertexAttrib4NuivARB) then Exit;
+    @glVertexAttribPointerARB := SDL_GL_GetProcAddress('glVertexAttribPointerARB');
+    if not Assigned(glVertexAttribPointerARB) then Exit;
+    @glEnableVertexAttribArrayARB := SDL_GL_GetProcAddress('glEnableVertexAttribArrayARB');
+    if not Assigned(glEnableVertexAttribArrayARB) then Exit;
+    @glDisableVertexAttribArrayARB := SDL_GL_GetProcAddress('glDisableVertexAttribArrayARB');
+    if not Assigned(glDisableVertexAttribArrayARB) then Exit;
+    @glBindAttribLocationARB := SDL_GL_GetProcAddress('glBindAttribLocationARB');
+    if not Assigned(glBindAttribLocationARB) then Exit;
+    @glGetActiveAttribARB := SDL_GL_GetProcAddress('glGetActiveAttribARB');
+    if not Assigned(glGetActiveAttribARB) then Exit;
+    @glGetAttribLocationARB := SDL_GL_GetProcAddress('glGetAttribLocationARB');
+    if not Assigned(glGetAttribLocationARB) then Exit;
+    @glGetVertexAttribdvARB := SDL_GL_GetProcAddress('glGetVertexAttribdvARB');
+    if not Assigned(glGetVertexAttribdvARB) then Exit;
+    @glGetVertexAttribfvARB := SDL_GL_GetProcAddress('glGetVertexAttribfvARB');
+    if not Assigned(glGetVertexAttribfvARB) then Exit;
+    @glGetVertexAttribivARB := SDL_GL_GetProcAddress('glGetVertexAttribivARB');
+    if not Assigned(glGetVertexAttribivARB) then Exit;
+    @glGetVertexAttribPointervARB := SDL_GL_GetProcAddress('glGetVertexAttribPointervARB');
+    if not Assigned(glGetVertexAttribPointervARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_fragment_shader: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_fragment_shader', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_shading_language_100: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_shading_language_100', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_non_power_of_two: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_texture_non_power_of_two', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_point_sprite: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_point_sprite', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_depth_bounds_test: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_depth_bounds_test', extstring) then
+  begin
+    @glDepthBoundsEXT := SDL_GL_GetProcAddress('glDepthBoundsEXT');
+    if not Assigned(glDepthBoundsEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_secondary_color: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_secondary_color', extstring) then
+  begin
+    @glSecondaryColor3bEXT := SDL_GL_GetProcAddress('glSecondaryColor3bEXT');
+    if not Assigned(glSecondaryColor3bEXT) then Exit;
+    @glSecondaryColor3sEXT := SDL_GL_GetProcAddress('glSecondaryColor3sEXT');
+    if not Assigned(glSecondaryColor3sEXT) then Exit;
+    @glSecondaryColor3iEXT := SDL_GL_GetProcAddress('glSecondaryColor3iEXT');
+    if not Assigned(glSecondaryColor3iEXT) then Exit;
+    @glSecondaryColor3fEXT := SDL_GL_GetProcAddress('glSecondaryColor3fEXT');
+    if not Assigned(glSecondaryColor3fEXT) then Exit;
+    @glSecondaryColor3dEXT := SDL_GL_GetProcAddress('glSecondaryColor3dEXT');
+    if not Assigned(glSecondaryColor3dEXT) then Exit;
+    @glSecondaryColor3ubEXT := SDL_GL_GetProcAddress('glSecondaryColor3ubEXT');
+    if not Assigned(glSecondaryColor3ubEXT) then Exit;
+    @glSecondaryColor3usEXT := SDL_GL_GetProcAddress('glSecondaryColor3usEXT');
+    if not Assigned(glSecondaryColor3usEXT) then Exit;
+    @glSecondaryColor3uiEXT := SDL_GL_GetProcAddress('glSecondaryColor3uiEXT');
+    if not Assigned(glSecondaryColor3uiEXT) then Exit;
+    @glSecondaryColor3bvEXT := SDL_GL_GetProcAddress('glSecondaryColor3bvEXT');
+    if not Assigned(glSecondaryColor3bvEXT) then Exit;
+    @glSecondaryColor3svEXT := SDL_GL_GetProcAddress('glSecondaryColor3svEXT');
+    if not Assigned(glSecondaryColor3svEXT) then Exit;
+    @glSecondaryColor3ivEXT := SDL_GL_GetProcAddress('glSecondaryColor3ivEXT');
+    if not Assigned(glSecondaryColor3ivEXT) then Exit;
+    @glSecondaryColor3fvEXT := SDL_GL_GetProcAddress('glSecondaryColor3fvEXT');
+    if not Assigned(glSecondaryColor3fvEXT) then Exit;
+    @glSecondaryColor3dvEXT := SDL_GL_GetProcAddress('glSecondaryColor3dvEXT');
+    if not Assigned(glSecondaryColor3dvEXT) then Exit;
+    @glSecondaryColor3ubvEXT := SDL_GL_GetProcAddress('glSecondaryColor3ubvEXT');
+    if not Assigned(glSecondaryColor3ubvEXT) then Exit;
+    @glSecondaryColor3usvEXT := SDL_GL_GetProcAddress('glSecondaryColor3usvEXT');
+    if not Assigned(glSecondaryColor3usvEXT) then Exit;
+    @glSecondaryColor3uivEXT := SDL_GL_GetProcAddress('glSecondaryColor3uivEXT');
+    if not Assigned(glSecondaryColor3uivEXT) then Exit;
+    @glSecondaryColorPointerEXT := SDL_GL_GetProcAddress('glSecondaryColorPointerEXT');
+    if not Assigned(glSecondaryColorPointerEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_mirror_clamp: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_texture_mirror_clamp', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_blend_equation_separate: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_blend_equation_separate', extstring) then
+  begin
+    @glBlendEquationSeparateEXT := SDL_GL_GetProcAddress('glBlendEquationSeparateEXT');
+    if not Assigned(glBlendEquationSeparateEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_MESA_pack_invert: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_MESA_pack_invert', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_MESA_ycbcr_texture: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_MESA_ycbcr_texture', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_fragment_program_shadow: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_ARB_fragment_program_shadow', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_fog_coord: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_fog_coord', extstring) then
+  begin
+    @glFogCoordfEXT := SDL_GL_GetProcAddress('glFogCoordfEXT');
+    if not Assigned(glFogCoordfEXT) then Exit;
+    @glFogCoorddEXT := SDL_GL_GetProcAddress('glFogCoorddEXT');
+    if not Assigned(glFogCoorddEXT) then Exit;
+    @glFogCoordfvEXT := SDL_GL_GetProcAddress('glFogCoordfvEXT');
+    if not Assigned(glFogCoordfvEXT) then Exit;
+    @glFogCoorddvEXT := SDL_GL_GetProcAddress('glFogCoorddvEXT');
+    if not Assigned(glFogCoorddvEXT) then Exit;
+    @glFogCoordPointerEXT := SDL_GL_GetProcAddress('glFogCoordPointerEXT');
+    if not Assigned(glFogCoordPointerEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_fragment_program_option: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_fragment_program_option', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_pixel_buffer_object: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_EXT_pixel_buffer_object', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_fragment_program2: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_fragment_program2', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_program2_option: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_program2_option', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_NV_vertex_program3: Boolean;
+var
+  extstring : PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString( GL_EXTENSIONS );
+
+  if glext_ExtensionSupported('GL_NV_vertex_program3', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_draw_buffers: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_draw_buffers', extstring) then
+  begin
+    glDrawBuffersARB := SDL_GL_GetProcAddress('glDrawBuffersARB');
+    if not Assigned(glDrawBuffersARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_rectangle: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_texture_rectangle', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_color_buffer_float: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_color_buffer_float', extstring) then
+  begin
+    glClampColorARB := SDL_GL_GetProcAddress('glClampColorARB');
+    if not Assigned(glClampColorARB) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_half_float_pixel: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_half_float_pixel', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_texture_float: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_texture_float', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_texture_compression_dxt1: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_EXT_texture_compression_dxt1', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_ARB_pixel_buffer_object: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_ARB_pixel_buffer_object', extstring) then
+  begin
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_EXT_framebuffer_object: Boolean;
+var
+  extstring: PChar;
+begin
+
+  Result := FALSE;
+  extstring := glGetString(GL_EXTENSIONS);
+
+  if glext_ExtensionSupported('GL_EXT_framebuffer_object', extstring) then
+  begin
+    glIsRenderbufferEXT := SDL_GL_GetProcAddress('glIsRenderbufferEXT');
+    if not Assigned(glIsRenderbufferEXT) then Exit;
+    glBindRenderbufferEXT := SDL_GL_GetProcAddress('glBindRenderbufferEXT');
+    if not Assigned(glBindRenderbufferEXT) then Exit;
+    glDeleteRenderbuffersEXT := SDL_GL_GetProcAddress('glDeleteRenderbuffersEXT');
+    if not Assigned(glDeleteRenderbuffersEXT) then Exit;
+    glGenRenderbuffersEXT := SDL_GL_GetProcAddress('glGenRenderbuffersEXT');
+    if not Assigned(glGenRenderbuffersEXT) then Exit;
+    glRenderbufferStorageEXT := SDL_GL_GetProcAddress('glRenderbufferStorageEXT');
+    if not Assigned(glRenderbufferStorageEXT) then Exit;
+    glGetRenderbufferParameterivEXT := SDL_GL_GetProcAddress('glGetRenderbufferParameterivEXT');
+    if not Assigned(glGetRenderbufferParameterivEXT) then Exit;
+    glIsFramebufferEXT := SDL_GL_GetProcAddress('glIsFramebufferEXT');
+    if not Assigned(glIsFramebufferEXT) then Exit;
+    glBindFramebufferEXT := SDL_GL_GetProcAddress('glBindFramebufferEXT');
+    if not Assigned(glBindFramebufferEXT) then Exit;
+    glDeleteFramebuffersEXT := SDL_GL_GetProcAddress('glDeleteFramebuffersEXT');
+    if not Assigned(glDeleteFramebuffersEXT) then Exit;
+    glGenFramebuffersEXT := SDL_GL_GetProcAddress('glGenFramebuffersEXT');
+    if not Assigned(glGenFramebuffersEXT) then Exit;
+    glCheckFramebufferStatusEXT := SDL_GL_GetProcAddress('glCheckFramebufferStatusEXT');
+    if not Assigned(glCheckFramebufferStatusEXT) then Exit;
+    glFramebufferTexture1DEXT := SDL_GL_GetProcAddress('glFramebufferTexture1DEXT');
+    if not Assigned(glFramebufferTexture1DEXT) then Exit;
+    glFramebufferTexture2DEXT := SDL_GL_GetProcAddress('glFramebufferTexture2DEXT');
+    if not Assigned(glFramebufferTexture2DEXT) then Exit;
+    glFramebufferTexture3DEXT := SDL_GL_GetProcAddress('glFramebufferTexture3DEXT');
+    if not Assigned(glFramebufferTexture3DEXT) then Exit;
+    glFramebufferRenderbufferEXT := SDL_GL_GetProcAddress('glFramebufferRenderbufferEXT');
+    if not Assigned(glFramebufferRenderbufferEXT) then Exit;
+    glGetFramebufferAttachmentParameterivEXT := SDL_GL_GetProcAddress('glGetFramebufferAttachmentParameterivEXT');
+    if not Assigned(glGetFramebufferAttachmentParameterivEXT) then Exit;
+    glGenerateMipmapEXT := SDL_GL_GetProcAddress('glGenerateMipmapEXT');
+    if not Assigned(glGenerateMipmapEXT) then Exit;
+    Result := TRUE;
+  end;
+
+end;
+
+function Load_GL_version_1_4: Boolean;
+var
+  extstring: String;
+begin
+
+  Result := FALSE;
+  extstring := String(PChar(glGetString(GL_EXTENSIONS)));
+
+    glBlendFuncSeparate := SDL_GL_GetProcAddress('glBlendFuncSeparate');
+    if not Assigned(glBlendFuncSeparate) then Exit;
+    glFogCoordf := SDL_GL_GetProcAddress('glFogCoordf');
+    if not Assigned(glFogCoordf) then Exit;
+    glFogCoordfv := SDL_GL_GetProcAddress('glFogCoordfv');
+    if not Assigned(glFogCoordfv) then Exit;
+    glFogCoordd := SDL_GL_GetProcAddress('glFogCoordd');
+    if not Assigned(glFogCoordd) then Exit;
+    glFogCoorddv := SDL_GL_GetProcAddress('glFogCoorddv');
+    if not Assigned(glFogCoorddv) then Exit;
+    glFogCoordPointer := SDL_GL_GetProcAddress('glFogCoordPointer');
+    if not Assigned(glFogCoordPointer) then Exit;
+    glMultiDrawArrays := SDL_GL_GetProcAddress('glMultiDrawArrays');
+    if not Assigned(glMultiDrawArrays) then Exit;
+    glMultiDrawElements := SDL_GL_GetProcAddress('glMultiDrawElements');
+    if not Assigned(glMultiDrawElements) then Exit;
+    glPointParameterf := SDL_GL_GetProcAddress('glPointParameterf');
+    if not Assigned(glPointParameterf) then Exit;
+    glPointParameterfv := SDL_GL_GetProcAddress('glPointParameterfv');
+    if not Assigned(glPointParameterfv) then Exit;
+    glPointParameteri := SDL_GL_GetProcAddress('glPointParameteri');
+    if not Assigned(glPointParameteri) then Exit;
+    glPointParameteriv := SDL_GL_GetProcAddress('glPointParameteriv');
+    if not Assigned(glPointParameteriv) then Exit;
+    glSecondaryColor3b := SDL_GL_GetProcAddress('glSecondaryColor3b');
+    if not Assigned(glSecondaryColor3b) then Exit;
+    glSecondaryColor3bv := SDL_GL_GetProcAddress('glSecondaryColor3bv');
+    if not Assigned(glSecondaryColor3bv) then Exit;
+    glSecondaryColor3d := SDL_GL_GetProcAddress('glSecondaryColor3d');
+    if not Assigned(glSecondaryColor3d) then Exit;
+    glSecondaryColor3dv := SDL_GL_GetProcAddress('glSecondaryColor3dv');
+    if not Assigned(glSecondaryColor3dv) then Exit;
+    glSecondaryColor3f := SDL_GL_GetProcAddress('glSecondaryColor3f');
+    if not Assigned(glSecondaryColor3f) then Exit;
+    glSecondaryColor3fv := SDL_GL_GetProcAddress('glSecondaryColor3fv');
+    if not Assigned(glSecondaryColor3fv) then Exit;
+    glSecondaryColor3i := SDL_GL_GetProcAddress('glSecondaryColor3i');
+    if not Assigned(glSecondaryColor3i) then Exit;
+    glSecondaryColor3iv := SDL_GL_GetProcAddress('glSecondaryColor3iv');
+    if not Assigned(glSecondaryColor3iv) then Exit;
+    glSecondaryColor3s := SDL_GL_GetProcAddress('glSecondaryColor3s');
+    if not Assigned(glSecondaryColor3s) then Exit;
+    glSecondaryColor3sv := SDL_GL_GetProcAddress('glSecondaryColor3sv');
+    if not Assigned(glSecondaryColor3sv) then Exit;
+    glSecondaryColor3ub := SDL_GL_GetProcAddress('glSecondaryColor3ub');
+    if not Assigned(glSecondaryColor3ub) then Exit;
+    glSecondaryColor3ubv := SDL_GL_GetProcAddress('glSecondaryColor3ubv');
+    if not Assigned(glSecondaryColor3ubv) then Exit;
+    glSecondaryColor3ui := SDL_GL_GetProcAddress('glSecondaryColor3ui');
+    if not Assigned(glSecondaryColor3ui) then Exit;
+    glSecondaryColor3uiv := SDL_GL_GetProcAddress('glSecondaryColor3uiv');
+    if not Assigned(glSecondaryColor3uiv) then Exit;
+    glSecondaryColor3us := SDL_GL_GetProcAddress('glSecondaryColor3us');
+    if not Assigned(glSecondaryColor3us) then Exit;
+    glSecondaryColor3usv := SDL_GL_GetProcAddress('glSecondaryColor3usv');
+    if not Assigned(glSecondaryColor3usv) then Exit;
+    glSecondaryColorPointer := SDL_GL_GetProcAddress('glSecondaryColorPointer');
+    if not Assigned(glSecondaryColorPointer) then Exit;
+    glWindowPos2d := SDL_GL_GetProcAddress('glWindowPos2d');
+    if not Assigned(glWindowPos2d) then Exit;
+    glWindowPos2dv := SDL_GL_GetProcAddress('glWindowPos2dv');
+    if not Assigned(glWindowPos2dv) then Exit;
+    glWindowPos2f := SDL_GL_GetProcAddress('glWindowPos2f');
+    if not Assigned(glWindowPos2f) then Exit;
+    glWindowPos2fv := SDL_GL_GetProcAddress('glWindowPos2fv');
+    if not Assigned(glWindowPos2fv) then Exit;
+    glWindowPos2i := SDL_GL_GetProcAddress('glWindowPos2i');
+    if not Assigned(glWindowPos2i) then Exit;
+    glWindowPos2iv := SDL_GL_GetProcAddress('glWindowPos2iv');
+    if not Assigned(glWindowPos2iv) then Exit;
+    glWindowPos2s := SDL_GL_GetProcAddress('glWindowPos2s');
+    if not Assigned(glWindowPos2s) then Exit;
+    glWindowPos2sv := SDL_GL_GetProcAddress('glWindowPos2sv');
+    if not Assigned(glWindowPos2sv) then Exit;
+    glWindowPos3d := SDL_GL_GetProcAddress('glWindowPos3d');
+    if not Assigned(glWindowPos3d) then Exit;
+    glWindowPos3dv := SDL_GL_GetProcAddress('glWindowPos3dv');
+    if not Assigned(glWindowPos3dv) then Exit;
+    glWindowPos3f := SDL_GL_GetProcAddress('glWindowPos3f');
+    if not Assigned(glWindowPos3f) then Exit;
+    glWindowPos3fv := SDL_GL_GetProcAddress('glWindowPos3fv');
+    if not Assigned(glWindowPos3fv) then Exit;
+    glWindowPos3i := SDL_GL_GetProcAddress('glWindowPos3i');
+    if not Assigned(glWindowPos3i) then Exit;
+    glWindowPos3iv := SDL_GL_GetProcAddress('glWindowPos3iv');
+    if not Assigned(glWindowPos3iv) then Exit;
+    glWindowPos3s := SDL_GL_GetProcAddress('glWindowPos3s');
+    if not Assigned(glWindowPos3s) then Exit;
+    glWindowPos3sv := SDL_GL_GetProcAddress('glWindowPos3sv');
+    if not Assigned(glWindowPos3sv) then Exit;
+    Result := TRUE;
+
+end;
+
+function Load_GL_version_1_5: Boolean;
+var
+  extstring: String;
+begin
+
+  Result := FALSE;
+  extstring := String(PChar(glGetString(GL_EXTENSIONS)));
+
+    glGenQueries := SDL_GL_GetProcAddress('glGenQueries');
+    if not Assigned(glGenQueries) then Exit;
+    glDeleteQueries := SDL_GL_GetProcAddress('glDeleteQueries');
+    if not Assigned(glDeleteQueries) then Exit;
+    glIsQuery := SDL_GL_GetProcAddress('glIsQuery');
+    if not Assigned(glIsQuery) then Exit;
+    glBeginQuery := SDL_GL_GetProcAddress('glBeginQuery');
+    if not Assigned(glBeginQuery) then Exit;
+    glEndQuery := SDL_GL_GetProcAddress('glEndQuery');
+    if not Assigned(glEndQuery) then Exit;
+    glGetQueryiv := SDL_GL_GetProcAddress('glGetQueryiv');
+    if not Assigned(glGetQueryiv) then Exit;
+    glGetQueryObjectiv := SDL_GL_GetProcAddress('glGetQueryObjectiv');
+    if not Assigned(glGetQueryObjectiv) then Exit;
+    glGetQueryObjectuiv := SDL_GL_GetProcAddress('glGetQueryObjectuiv');
+    if not Assigned(glGetQueryObjectuiv) then Exit;
+    glBindBuffer := SDL_GL_GetProcAddress('glBindBuffer');
+    if not Assigned(glBindBuffer) then Exit;
+    glDeleteBuffers := SDL_GL_GetProcAddress('glDeleteBuffers');
+    if not Assigned(glDeleteBuffers) then Exit;
+    glGenBuffers := SDL_GL_GetProcAddress('glGenBuffers');
+    if not Assigned(glGenBuffers) then Exit;
+    glIsBuffer := SDL_GL_GetProcAddress('glIsBuffer');
+    if not Assigned(glIsBuffer) then Exit;
+    glBufferData := SDL_GL_GetProcAddress('glBufferData');
+    if not Assigned(glBufferData) then Exit;
+    glBufferSubData := SDL_GL_GetProcAddress('glBufferSubData');
+    if not Assigned(glBufferSubData) then Exit;
+    glGetBufferSubData := SDL_GL_GetProcAddress('glGetBufferSubData');
+    if not Assigned(glGetBufferSubData) then Exit;
+    glMapBuffer := SDL_GL_GetProcAddress('glMapBuffer');
+    if not Assigned(glMapBuffer) then Exit;
+    glUnmapBuffer := SDL_GL_GetProcAddress('glUnmapBuffer');
+    if not Assigned(glUnmapBuffer) then Exit;
+    glGetBufferParameteriv := SDL_GL_GetProcAddress('glGetBufferParameteriv');
+    if not Assigned(glGetBufferParameteriv) then Exit;
+    glGetBufferPointerv := SDL_GL_GetProcAddress('glGetBufferPointerv');
+    if not Assigned(glGetBufferPointerv) then Exit;
+    Result := TRUE;
+
+end;
+
+function Load_GL_version_2_0: Boolean;
+var
+  extstring: String;
+begin
+
+  Result := FALSE;
+  extstring := String(PChar(glGetString(GL_EXTENSIONS)));
+
+    glBlendEquationSeparate := SDL_GL_GetProcAddress('glBlendEquationSeparate');
+    if not Assigned(glBlendEquationSeparate) then Exit;
+    glDrawBuffers := SDL_GL_GetProcAddress('glDrawBuffers');
+    if not Assigned(glDrawBuffers) then Exit;
+    glStencilOpSeparate := SDL_GL_GetProcAddress('glStencilOpSeparate');
+    if not Assigned(glStencilOpSeparate) then Exit;
+    glStencilFuncSeparate := SDL_GL_GetProcAddress('glStencilFuncSeparate');
+    if not Assigned(glStencilFuncSeparate) then Exit;
+    glStencilMaskSeparate := SDL_GL_GetProcAddress('glStencilMaskSeparate');
+    if not Assigned(glStencilMaskSeparate) then Exit;
+    glAttachShader := SDL_GL_GetProcAddress('glAttachShader');
+    if not Assigned(glAttachShader) then Exit;
+    glBindAttribLocation := SDL_GL_GetProcAddress('glBindAttribLocation');
+    if not Assigned(glBindAttribLocation) then Exit;
+    glCompileShader := SDL_GL_GetProcAddress('glCompileShader');
+    if not Assigned(glCompileShader) then Exit;
+    glCreateProgram := SDL_GL_GetProcAddress('glCreateProgram');
+    if not Assigned(glCreateProgram) then Exit;
+    glCreateShader := SDL_GL_GetProcAddress('glCreateShader');
+    if not Assigned(glCreateShader) then Exit;
+    glDeleteProgram := SDL_GL_GetProcAddress('glDeleteProgram');
+    if not Assigned(glDeleteProgram) then Exit;
+    glDeleteShader := SDL_GL_GetProcAddress('glDeleteShader');
+    if not Assigned(glDeleteShader) then Exit;
+    glDetachShader := SDL_GL_GetProcAddress('glDetachShader');
+    if not Assigned(glDetachShader) then Exit;
+    glDisableVertexAttribArray := SDL_GL_GetProcAddress('glDisableVertexAttribArray');
+    if not Assigned(glDisableVertexAttribArray) then Exit;
+    glEnableVertexAttribArray := SDL_GL_GetProcAddress('glEnableVertexAttribArray');
+    if not Assigned(glEnableVertexAttribArray) then Exit;
+    glGetActiveAttrib := SDL_GL_GetProcAddress('glGetActiveAttrib');
+    if not Assigned(glGetActiveAttrib) then Exit;
+    glGetActiveUniform := SDL_GL_GetProcAddress('glGetActiveUniform');
+    if not Assigned(glGetActiveUniform) then Exit;
+    glGetAttachedShaders := SDL_GL_GetProcAddress('glGetAttachedShaders');
+    if not Assigned(glGetAttachedShaders) then Exit;
+    glGetAttribLocation := SDL_GL_GetProcAddress('glGetAttribLocation');
+    if not Assigned(glGetAttribLocation) then Exit;
+    glGetProgramiv := SDL_GL_GetProcAddress('glGetProgramiv');
+    if not Assigned(glGetProgramiv) then Exit;
+    glGetProgramInfoLog := SDL_GL_GetProcAddress('glGetProgramInfoLog');
+    if not Assigned(glGetProgramInfoLog) then Exit;
+    glGetShaderiv := SDL_GL_GetProcAddress('glGetShaderiv');
+    if not Assigned(glGetShaderiv) then Exit;
+    glGetShaderInfoLog := SDL_GL_GetProcAddress('glGetShaderInfoLog');
+    if not Assigned(glGetShaderInfoLog) then Exit;
+    glGetShaderSource := SDL_GL_GetProcAddress('glGetShaderSource');
+    if not Assigned(glGetShaderSource) then Exit;
+    glGetUniformLocation := SDL_GL_GetProcAddress('glGetUniformLocation');
+    if not Assigned(glGetUniformLocation) then Exit;
+    glGetUniformfv := SDL_GL_GetProcAddress('glGetUniformfv');
+    if not Assigned(glGetUniformfv) then Exit;
+    glGetUniformiv := SDL_GL_GetProcAddress('glGetUniformiv');
+    if not Assigned(glGetUniformiv) then Exit;
+    glGetVertexAttribdv := SDL_GL_GetProcAddress('glGetVertexAttribdv');
+    if not Assigned(glGetVertexAttribdv) then Exit;
+    glGetVertexAttribfv := SDL_GL_GetProcAddress('glGetVertexAttribfv');
+    if not Assigned(glGetVertexAttribfv) then Exit;
+    glGetVertexAttribiv := SDL_GL_GetProcAddress('glGetVertexAttribiv');
+    if not Assigned(glGetVertexAttribiv) then Exit;
+    glGetVertexAttribPointerv := SDL_GL_GetProcAddress('glGetVertexAttribPointerv');
+    if not Assigned(glGetVertexAttribPointerv) then Exit;
+    glIsProgram := SDL_GL_GetProcAddress('glIsProgram');
+    if not Assigned(glIsProgram) then Exit;
+    glIsShader := SDL_GL_GetProcAddress('glIsShader');
+    if not Assigned(glIsShader) then Exit;
+    glLinkProgram := SDL_GL_GetProcAddress('glLinkProgram');
+    if not Assigned(glLinkProgram) then Exit;
+    glShaderSource := SDL_GL_GetProcAddress('glShaderSource');
+    if not Assigned(glShaderSource) then Exit;
+    glUseProgram := SDL_GL_GetProcAddress('glUseProgram');
+    if not Assigned(glUseProgram) then Exit;
+    glUniform1f := SDL_GL_GetProcAddress('glUniform1f');
+    if not Assigned(glUniform1f) then Exit;
+    glUniform2f := SDL_GL_GetProcAddress('glUniform2f');
+    if not Assigned(glUniform2f) then Exit;
+    glUniform3f := SDL_GL_GetProcAddress('glUniform3f');
+    if not Assigned(glUniform3f) then Exit;
+    glUniform4f := SDL_GL_GetProcAddress('glUniform4f');
+    if not Assigned(glUniform4f) then Exit;
+    glUniform1i := SDL_GL_GetProcAddress('glUniform1i');
+    if not Assigned(glUniform1i) then Exit;
+    glUniform2i := SDL_GL_GetProcAddress('glUniform2i');
+    if not Assigned(glUniform2i) then Exit;
+    glUniform3i := SDL_GL_GetProcAddress('glUniform3i');
+    if not Assigned(glUniform3i) then Exit;
+    glUniform4i := SDL_GL_GetProcAddress('glUniform4i');
+    if not Assigned(glUniform4i) then Exit;
+    glUniform1fv := SDL_GL_GetProcAddress('glUniform1fv');
+    if not Assigned(glUniform1fv) then Exit;
+    glUniform2fv := SDL_GL_GetProcAddress('glUniform2fv');
+    if not Assigned(glUniform2fv) then Exit;
+    glUniform3fv := SDL_GL_GetProcAddress('glUniform3fv');
+    if not Assigned(glUniform3fv) then Exit;
+    glUniform4fv := SDL_GL_GetProcAddress('glUniform4fv');
+    if not Assigned(glUniform4fv) then Exit;
+    glUniform1iv := SDL_GL_GetProcAddress('glUniform1iv');
+    if not Assigned(glUniform1iv) then Exit;
+    glUniform2iv := SDL_GL_GetProcAddress('glUniform2iv');
+    if not Assigned(glUniform2iv) then Exit;
+    glUniform3iv := SDL_GL_GetProcAddress('glUniform3iv');
+    if not Assigned(glUniform3iv) then Exit;
+    glUniform4iv := SDL_GL_GetProcAddress('glUniform4iv');
+    if not Assigned(glUniform4iv) then Exit;
+    glUniformMatrix2fv := SDL_GL_GetProcAddress('glUniformMatrix2fv');
+    if not Assigned(glUniformMatrix2fv) then Exit;
+    glUniformMatrix3fv := SDL_GL_GetProcAddress('glUniformMatrix3fv');
+    if not Assigned(glUniformMatrix3fv) then Exit;
+    glUniformMatrix4fv := SDL_GL_GetProcAddress('glUniformMatrix4fv');
+    if not Assigned(glUniformMatrix4fv) then Exit;
+    glValidateProgram := SDL_GL_GetProcAddress('glValidateProgram');
+    if not Assigned(glValidateProgram) then Exit;
+    glVertexAttrib1d := SDL_GL_GetProcAddress('glVertexAttrib1d');
+    if not Assigned(glVertexAttrib1d) then Exit;
+    glVertexAttrib1dv := SDL_GL_GetProcAddress('glVertexAttrib1dv');
+    if not Assigned(glVertexAttrib1dv) then Exit;
+    glVertexAttrib1f := SDL_GL_GetProcAddress('glVertexAttrib1f');
+    if not Assigned(glVertexAttrib1f) then Exit;
+    glVertexAttrib1fv := SDL_GL_GetProcAddress('glVertexAttrib1fv');
+    if not Assigned(glVertexAttrib1fv) then Exit;
+    glVertexAttrib1s := SDL_GL_GetProcAddress('glVertexAttrib1s');
+    if not Assigned(glVertexAttrib1s) then Exit;
+    glVertexAttrib1sv := SDL_GL_GetProcAddress('glVertexAttrib1sv');
+    if not Assigned(glVertexAttrib1sv) then Exit;
+    glVertexAttrib2d := SDL_GL_GetProcAddress('glVertexAttrib2d');
+    if not Assigned(glVertexAttrib2d) then Exit;
+    glVertexAttrib2dv := SDL_GL_GetProcAddress('glVertexAttrib2dv');
+    if not Assigned(glVertexAttrib2dv) then Exit;
+    glVertexAttrib2f := SDL_GL_GetProcAddress('glVertexAttrib2f');
+    if not Assigned(glVertexAttrib2f) then Exit;
+    glVertexAttrib2fv := SDL_GL_GetProcAddress('glVertexAttrib2fv');
+    if not Assigned(glVertexAttrib2fv) then Exit;
+    glVertexAttrib2s := SDL_GL_GetProcAddress('glVertexAttrib2s');
+    if not Assigned(glVertexAttrib2s) then Exit;
+    glVertexAttrib2sv := SDL_GL_GetProcAddress('glVertexAttrib2sv');
+    if not Assigned(glVertexAttrib2sv) then Exit;
+    glVertexAttrib3d := SDL_GL_GetProcAddress('glVertexAttrib3d');
+    if not Assigned(glVertexAttrib3d) then Exit;
+    glVertexAttrib3dv := SDL_GL_GetProcAddress('glVertexAttrib3dv');
+    if not Assigned(glVertexAttrib3dv) then Exit;
+    glVertexAttrib3f := SDL_GL_GetProcAddress('glVertexAttrib3f');
+    if not Assigned(glVertexAttrib3f) then Exit;
+    glVertexAttrib3fv := SDL_GL_GetProcAddress('glVertexAttrib3fv');
+    if not Assigned(glVertexAttrib3fv) then Exit;
+    glVertexAttrib3s := SDL_GL_GetProcAddress('glVertexAttrib3s');
+    if not Assigned(glVertexAttrib3s) then Exit;
+    glVertexAttrib3sv := SDL_GL_GetProcAddress('glVertexAttrib3sv');
+    if not Assigned(glVertexAttrib3sv) then Exit;
+    glVertexAttrib4Nbv := SDL_GL_GetProcAddress('glVertexAttrib4Nbv');
+    if not Assigned(glVertexAttrib4Nbv) then Exit;
+    glVertexAttrib4Niv := SDL_GL_GetProcAddress('glVertexAttrib4Niv');
+    if not Assigned(glVertexAttrib4Niv) then Exit;
+    glVertexAttrib4Nsv := SDL_GL_GetProcAddress('glVertexAttrib4Nsv');
+    if not Assigned(glVertexAttrib4Nsv) then Exit;
+    glVertexAttrib4Nub := SDL_GL_GetProcAddress('glVertexAttrib4Nub');
+    if not Assigned(glVertexAttrib4Nub) then Exit;
+    glVertexAttrib4Nubv := SDL_GL_GetProcAddress('glVertexAttrib4Nubv');
+    if not Assigned(glVertexAttrib4Nubv) then Exit;
+    glVertexAttrib4Nuiv := SDL_GL_GetProcAddress('glVertexAttrib4Nuiv');
+    if not Assigned(glVertexAttrib4Nuiv) then Exit;
+    glVertexAttrib4Nusv := SDL_GL_GetProcAddress('glVertexAttrib4Nusv');
+    if not Assigned(glVertexAttrib4Nusv) then Exit;
+    glVertexAttrib4bv := SDL_GL_GetProcAddress('glVertexAttrib4bv');
+    if not Assigned(glVertexAttrib4bv) then Exit;
+    glVertexAttrib4d := SDL_GL_GetProcAddress('glVertexAttrib4d');
+    if not Assigned(glVertexAttrib4d) then Exit;
+    glVertexAttrib4dv := SDL_GL_GetProcAddress('glVertexAttrib4dv');
+    if not Assigned(glVertexAttrib4dv) then Exit;
+    glVertexAttrib4f := SDL_GL_GetProcAddress('glVertexAttrib4f');
+    if not Assigned(glVertexAttrib4f) then Exit;
+    glVertexAttrib4fv := SDL_GL_GetProcAddress('glVertexAttrib4fv');
+    if not Assigned(glVertexAttrib4fv) then Exit;
+    glVertexAttrib4iv := SDL_GL_GetProcAddress('glVertexAttrib4iv');
+    if not Assigned(glVertexAttrib4iv) then Exit;
+    glVertexAttrib4s := SDL_GL_GetProcAddress('glVertexAttrib4s');
+    if not Assigned(glVertexAttrib4s) then Exit;
+    glVertexAttrib4sv := SDL_GL_GetProcAddress('glVertexAttrib4sv');
+    if not Assigned(glVertexAttrib4sv) then Exit;
+    glVertexAttrib4ubv := SDL_GL_GetProcAddress('glVertexAttrib4ubv');
+    if not Assigned(glVertexAttrib4ubv) then Exit;
+    glVertexAttrib4uiv := SDL_GL_GetProcAddress('glVertexAttrib4uiv');
+    if not Assigned(glVertexAttrib4uiv) then Exit;
+    glVertexAttrib4usv := SDL_GL_GetProcAddress('glVertexAttrib4usv');
+    if not Assigned(glVertexAttrib4usv) then Exit;
+    glVertexAttribPointer := SDL_GL_GetProcAddress('glVertexAttribPointer');
+    if not Assigned(glVertexAttribPointer) then Exit;
+    Result := TRUE;
+
+end;
+
+function glext_LoadExtension(ext: String): Boolean;
+begin
+
+  Result := FALSE;
+
+  if ext = 'GL_version_1_2' then Result := Load_GL_version_1_2
+  else if ext = 'GL_ARB_imaging' then Result := Load_GL_ARB_imaging
+  else if ext = 'GL_version_1_3' then Result := Load_GL_version_1_3
+  else if ext = 'GL_ARB_multitexture' then Result := Load_GL_ARB_multitexture
+  else if ext = 'GL_ARB_transpose_matrix' then Result := Load_GL_ARB_transpose_matrix
+  else if ext = 'GL_ARB_multisample' then Result := Load_GL_ARB_multisample
+  else if ext = 'GL_ARB_texture_env_add' then Result := Load_GL_ARB_texture_env_add
+  {$IFDEF WINDOWS}
+  else if ext = 'WGL_ARB_extensions_string' then Result := Load_WGL_ARB_extensions_string
+  else if ext = 'WGL_ARB_buffer_region' then Result := Load_WGL_ARB_buffer_region
+  {$ENDIF}
+  else if ext = 'GL_ARB_texture_cube_map' then Result := Load_GL_ARB_texture_cube_map
+  else if ext = 'GL_ARB_depth_texture' then Result := Load_GL_ARB_depth_texture
+  else if ext = 'GL_ARB_point_parameters' then Result := Load_GL_ARB_point_parameters
+  else if ext = 'GL_ARB_shadow' then Result := Load_GL_ARB_shadow
+  else if ext = 'GL_ARB_shadow_ambient' then Result := Load_GL_ARB_shadow_ambient
+  else if ext = 'GL_ARB_texture_border_clamp' then Result := Load_GL_ARB_texture_border_clamp
+  else if ext = 'GL_ARB_texture_compression' then Result := Load_GL_ARB_texture_compression
+  else if ext = 'GL_ARB_texture_env_combine' then Result := Load_GL_ARB_texture_env_combine
+  else if ext = 'GL_ARB_texture_env_crossbar' then Result := Load_GL_ARB_texture_env_crossbar
+  else if ext = 'GL_ARB_texture_env_dot3' then Result := Load_GL_ARB_texture_env_dot3
+  else if ext = 'GL_ARB_texture_mirrored_repeat' then Result := Load_GL_ARB_texture_mirrored_repeat
+  else if ext = 'GL_ARB_vertex_blend' then Result := Load_GL_ARB_vertex_blend
+  else if ext = 'GL_ARB_vertex_program' then Result := Load_GL_ARB_vertex_program
+  else if ext = 'GL_ARB_window_pos' then Result := Load_GL_ARB_window_pos
+  else if ext = 'GL_EXT_422_pixels' then Result := Load_GL_EXT_422_pixels
+  else if ext = 'GL_EXT_abgr' then Result := Load_GL_EXT_abgr
+  else if ext = 'GL_EXT_bgra' then Result := Load_GL_EXT_bgra
+  else if ext = 'GL_EXT_blend_color' then Result := Load_GL_EXT_blend_color
+  else if ext = 'GL_EXT_blend_func_separate' then Result := Load_GL_EXT_blend_func_separate
+  else if ext = 'GL_EXT_blend_logic_op' then Result := Load_GL_EXT_blend_logic_op
+  else if ext = 'GL_EXT_blend_minmax' then Result := Load_GL_EXT_blend_minmax
+  else if ext = 'GL_EXT_blend_subtract' then Result := Load_GL_EXT_blend_subtract
+  else if ext = 'GL_EXT_clip_volume_hint' then Result := Load_GL_EXT_clip_volume_hint
+  else if ext = 'GL_EXT_color_subtable' then Result := Load_GL_EXT_color_subtable
+  else if ext = 'GL_EXT_compiled_vertex_array' then Result := Load_GL_EXT_compiled_vertex_array
+  else if ext = 'GL_EXT_convolution' then Result := Load_GL_EXT_convolution
+  else if ext = 'GL_EXT_histogram' then Result := Load_GL_EXT_histogram
+  else if ext = 'GL_EXT_multi_draw_arrays' then Result := Load_GL_EXT_multi_draw_arrays
+  else if ext = 'GL_EXT_packed_pixels' then Result := Load_GL_EXT_packed_pixels
+  else if ext = 'GL_EXT_paletted_texture' then Result := Load_GL_EXT_paletted_texture
+  else if ext = 'GL_EXT_point_parameters' then Result := Load_GL_EXT_point_parameters
+  else if ext = 'GL_EXT_polygon_offset' then Result := Load_GL_EXT_polygon_offset
+  else if ext = 'GL_EXT_separate_specular_color' then Result := Load_GL_EXT_separate_specular_color
+  else if ext = 'GL_EXT_shadow_funcs' then Result := Load_GL_EXT_shadow_funcs
+  else if ext = 'GL_EXT_shared_texture_palette' then Result := Load_GL_EXT_shared_texture_palette
+  else if ext = 'GL_EXT_stencil_two_side' then Result := Load_GL_EXT_stencil_two_side
+  else if ext = 'GL_EXT_stencil_wrap' then Result := Load_GL_EXT_stencil_wrap
+  else if ext = 'GL_EXT_subtexture' then Result := Load_GL_EXT_subtexture
+  else if ext = 'GL_EXT_texture3D' then Result := Load_GL_EXT_texture3D
+  else if ext = 'GL_EXT_texture_compression_s3tc' then Result := Load_GL_EXT_texture_compression_s3tc
+  else if ext = 'GL_EXT_texture_env_add' then Result := Load_GL_EXT_texture_env_add
+  else if ext = 'GL_EXT_texture_env_combine' then Result := Load_GL_EXT_texture_env_combine
+  else if ext = 'GL_EXT_texture_env_dot3' then Result := Load_GL_EXT_texture_env_dot3
+  else if ext = 'GL_EXT_texture_filter_anisotropic' then Result := Load_GL_EXT_texture_filter_anisotropic
+  else if ext = 'GL_EXT_texture_lod_bias' then Result := Load_GL_EXT_texture_lod_bias
+  else if ext = 'GL_EXT_texture_object' then Result := Load_GL_EXT_texture_object
+  else if ext = 'GL_EXT_vertex_array' then Result := Load_GL_EXT_vertex_array
+  else if ext = 'GL_EXT_vertex_shader' then Result := Load_GL_EXT_vertex_shader
+  else if ext = 'GL_EXT_vertex_weighting' then Result := Load_GL_EXT_vertex_weighting
+  else if ext = 'GL_HP_occlusion_test' then Result := Load_GL_HP_occlusion_test
+  else if ext = 'GL_NV_blend_square' then Result := Load_GL_NV_blend_square
+  else if ext = 'GL_NV_copy_depth_to_color' then Result := Load_GL_NV_copy_depth_to_color
+  else if ext = 'GL_NV_depth_clamp' then Result := Load_GL_NV_depth_clamp
+  else if ext = 'GL_NV_evaluators' then Result := Load_GL_NV_evaluators
+  else if ext = 'GL_NV_fence' then Result := Load_GL_NV_fence
+  else if ext = 'GL_NV_fog_distance' then Result := Load_GL_NV_fog_distance
+  else if ext = 'GL_NV_light_max_exponent' then Result := Load_GL_NV_light_max_exponent
+  else if ext = 'GL_NV_multisample_filter_hint' then Result := Load_GL_NV_multisample_filter_hint
+  else if ext = 'GL_NV_occlusion_query' then Result := Load_GL_NV_occlusion_query
+  else if ext = 'GL_NV_packed_depth_stencil' then Result := Load_GL_NV_packed_depth_stencil
+  else if ext = 'GL_NV_point_sprite' then Result := Load_GL_NV_point_sprite
+  else if ext = 'GL_NV_register_combiners' then Result := Load_GL_NV_register_combiners
+  else if ext = 'GL_NV_register_combiners2' then Result := Load_GL_NV_register_combiners2
+  else if ext = 'GL_NV_texgen_emboss' then Result := Load_GL_NV_texgen_emboss
+  else if ext = 'GL_NV_texgen_reflection' then Result := Load_GL_NV_texgen_reflection
+  else if ext = 'GL_NV_texture_compression_vtc' then Result := Load_GL_NV_texture_compression_vtc
+  else if ext = 'GL_NV_texture_env_combine4' then Result := Load_GL_NV_texture_env_combine4
+  else if ext = 'GL_NV_texture_rectangle' then Result := Load_GL_NV_texture_rectangle
+  else if ext = 'GL_NV_texture_shader' then Result := Load_GL_NV_texture_shader
+  else if ext = 'GL_NV_texture_shader2' then Result := Load_GL_NV_texture_shader2
+  else if ext = 'GL_NV_texture_shader3' then Result := Load_GL_NV_texture_shader3
+  else if ext = 'GL_NV_vertex_array_range' then Result := Load_GL_NV_vertex_array_range
+  else if ext = 'GL_NV_vertex_array_range2' then Result := Load_GL_NV_vertex_array_range2
+  else if ext = 'GL_NV_vertex_program' then Result := Load_GL_NV_vertex_program
+  else if ext = 'GL_NV_vertex_program1_1' then Result := Load_GL_NV_vertex_program1_1
+  else if ext = 'GL_ATI_element_array' then Result := Load_GL_ATI_element_array
+  else if ext = 'GL_ATI_envmap_bumpmap' then Result := Load_GL_ATI_envmap_bumpmap
+  else if ext = 'GL_ATI_fragment_shader' then Result := Load_GL_ATI_fragment_shader
+  else if ext = 'GL_ATI_pn_triangles' then Result := Load_GL_ATI_pn_triangles
+  else if ext = 'GL_ATI_texture_mirror_once' then Result := Load_GL_ATI_texture_mirror_once
+  else if ext = 'GL_ATI_vertex_array_object' then Result := Load_GL_ATI_vertex_array_object
+  else if ext = 'GL_ATI_vertex_streams' then Result := Load_GL_ATI_vertex_streams
+  {$IFDEF WINDOWS}
+  else if ext = 'WGL_I3D_image_buffer' then Result := Load_WGL_I3D_image_buffer
+  else if ext = 'WGL_I3D_swap_frame_lock' then Result := Load_WGL_I3D_swap_frame_lock
+  else if ext = 'WGL_I3D_swap_frame_usage' then Result := Load_WGL_I3D_swap_frame_usage
+  {$ENDIF}
+  else if ext = 'GL_3DFX_texture_compression_FXT1' then Result := Load_GL_3DFX_texture_compression_FXT1
+  else if ext = 'GL_IBM_cull_vertex' then Result := Load_GL_IBM_cull_vertex
+  else if ext = 'GL_IBM_multimode_draw_arrays' then Result := Load_GL_IBM_multimode_draw_arrays
+  else if ext = 'GL_IBM_raster_pos_clip' then Result := Load_GL_IBM_raster_pos_clip
+  else if ext = 'GL_IBM_texture_mirrored_repeat' then Result := Load_GL_IBM_texture_mirrored_repeat
+  else if ext = 'GL_IBM_vertex_array_lists' then Result := Load_GL_IBM_vertex_array_lists
+  else if ext = 'GL_MESA_resize_buffers' then Result := Load_GL_MESA_resize_buffers
+  else if ext = 'GL_MESA_window_pos' then Result := Load_GL_MESA_window_pos
+  else if ext = 'GL_OML_interlace' then Result := Load_GL_OML_interlace
+  else if ext = 'GL_OML_resample' then Result := Load_GL_OML_resample
+  else if ext = 'GL_OML_subsample' then Result := Load_GL_OML_subsample
+  else if ext = 'GL_SGIS_generate_mipmap' then Result := Load_GL_SGIS_generate_mipmap
+  else if ext = 'GL_SGIS_multisample' then Result := Load_GL_SGIS_multisample
+  else if ext = 'GL_SGIS_pixel_texture' then Result := Load_GL_SGIS_pixel_texture
+  else if ext = 'GL_SGIS_texture_border_clamp' then Result := Load_GL_SGIS_texture_border_clamp
+  else if ext = 'GL_SGIS_texture_color_mask' then Result := Load_GL_SGIS_texture_color_mask
+  else if ext = 'GL_SGIS_texture_edge_clamp' then Result := Load_GL_SGIS_texture_edge_clamp
+  else if ext = 'GL_SGIS_texture_lod' then Result := Load_GL_SGIS_texture_lod
+  else if ext = 'GL_SGIS_depth_texture' then Result := Load_GL_SGIS_depth_texture
+  else if ext = 'GL_SGIX_fog_offset' then Result := Load_GL_SGIX_fog_offset
+  else if ext = 'GL_SGIX_interlace' then Result := Load_GL_SGIX_interlace
+  else if ext = 'GL_SGIX_shadow_ambient' then Result := Load_GL_SGIX_shadow_ambient
+  else if ext = 'GL_SGI_color_matrix' then Result := Load_GL_SGI_color_matrix
+  else if ext = 'GL_SGI_color_table' then Result := Load_GL_SGI_color_table
+  else if ext = 'GL_SGI_texture_color_table' then Result := Load_GL_SGI_texture_color_table
+  else if ext = 'GL_SUN_vertex' then Result := Load_GL_SUN_vertex
+  else if ext = 'GL_ARB_fragment_program' then Result := Load_GL_ARB_fragment_program
+  else if ext = 'GL_ATI_text_fragment_shader' then Result := Load_GL_ATI_text_fragment_shader
+  else if ext = 'GL_APPLE_client_storage' then Result := Load_GL_APPLE_client_storage
+  else if ext = 'GL_APPLE_element_array' then Result := Load_GL_APPLE_element_array
+  else if ext = 'GL_APPLE_fence' then Result := Load_GL_APPLE_fence
+  else if ext = 'GL_APPLE_vertex_array_object' then Result := Load_GL_APPLE_vertex_array_object
+  else if ext = 'GL_APPLE_vertex_array_range' then Result := Load_GL_APPLE_vertex_array_range
+  {$IFDEF WINDOWS}
+  else if ext = 'WGL_ARB_pixel_format' then Result := Load_WGL_ARB_pixel_format
+  else if ext = 'WGL_ARB_make_current_read' then Result := Load_WGL_ARB_make_current_read
+  else if ext = 'WGL_ARB_pbuffer' then Result := Load_WGL_ARB_pbuffer
+  else if ext = 'WGL_EXT_swap_control' then Result := Load_WGL_EXT_swap_control
+  else if ext = 'WGL_ARB_render_texture' then Result := Load_WGL_ARB_render_texture
+  else if ext = 'WGL_EXT_extensions_string' then Result := Load_WGL_EXT_extensions_string
+  else if ext = 'WGL_EXT_make_current_read' then Result := Load_WGL_EXT_make_current_read
+  else if ext = 'WGL_EXT_pbuffer' then Result := Load_WGL_EXT_pbuffer
+  else if ext = 'WGL_EXT_pixel_format' then Result := Load_WGL_EXT_pixel_format
+  else if ext = 'WGL_I3D_digital_video_control' then Result := Load_WGL_I3D_digital_video_control
+  else if ext = 'WGL_I3D_gamma' then Result := Load_WGL_I3D_gamma
+  else if ext = 'WGL_I3D_genlock' then Result := Load_WGL_I3D_genlock
+  {$ENDIF}
+  else if ext = 'GL_ARB_matrix_palette' then Result := Load_GL_ARB_matrix_palette
+  else if ext = 'GL_NV_element_array' then Result := Load_GL_NV_element_array
+  else if ext = 'GL_NV_float_buffer' then Result := Load_GL_NV_float_buffer
+  else if ext = 'GL_NV_fragment_program' then Result := Load_GL_NV_fragment_program
+  else if ext = 'GL_NV_primitive_restart' then Result := Load_GL_NV_primitive_restart
+  else if ext = 'GL_NV_vertex_program2' then Result := Load_GL_NV_vertex_program2
+  {$IFDEF WINDOWS}
+  else if ext = 'WGL_NV_render_texture_rectangle' then Result := Load_WGL_NV_render_texture_rectangle
+  {$ENDIF}
+  else if ext = 'GL_NV_pixel_data_range' then Result := Load_GL_NV_pixel_data_range
+  else if ext = 'GL_EXT_texture_rectangle' then Result := Load_GL_EXT_texture_rectangle
+  else if ext = 'GL_S3_s3tc' then Result := Load_GL_S3_s3tc
+  else if ext = 'GL_ATI_draw_buffers' then Result := Load_GL_ATI_draw_buffers
+  {$IFDEF WINDOWS}
+  else if ext = 'WGL_ATI_pixel_format_float' then Result := Load_WGL_ATI_pixel_format_float
+  {$ENDIF}
+  else if ext = 'GL_ATI_texture_env_combine3' then Result := Load_GL_ATI_texture_env_combine3
+  else if ext = 'GL_ATI_texture_float' then Result := Load_GL_ATI_texture_float
+  else if ext = 'GL_NV_texture_expand_normal' then Result := Load_GL_NV_texture_expand_normal
+  else if ext = 'GL_NV_half_float' then Result := Load_GL_NV_half_float
+  else if ext = 'GL_ATI_map_object_buffer' then Result := Load_GL_ATI_map_object_buffer
+  else if ext = 'GL_ATI_separate_stencil' then Result := Load_GL_ATI_separate_stencil
+  else if ext = 'GL_ATI_vertex_attrib_array_object' then Result := Load_GL_ATI_vertex_attrib_array_object
+  else if ext = 'GL_ARB_vertex_buffer_object' then Result := Load_GL_ARB_vertex_buffer_object
+  else if ext = 'GL_ARB_occlusion_query' then Result := Load_GL_ARB_occlusion_query
+  else if ext = 'GL_ARB_shader_objects' then Result := Load_GL_ARB_shader_objects
+  else if ext = 'GL_ARB_vertex_shader' then Result := Load_GL_ARB_vertex_shader
+  else if ext = 'GL_ARB_fragment_shader' then Result := Load_GL_ARB_fragment_shader
+  else if ext = 'GL_ARB_shading_language_100' then Result := Load_GL_ARB_shading_language_100
+  else if ext = 'GL_ARB_texture_non_power_of_two' then Result := Load_GL_ARB_texture_non_power_of_two
+  else if ext = 'GL_ARB_point_sprite' then Result := Load_GL_ARB_point_sprite
+  else if ext = 'GL_EXT_depth_bounds_test' then Result := Load_GL_EXT_depth_bounds_test
+  else if ext = 'GL_EXT_secondary_color' then Result := Load_GL_EXT_secondary_color
+  else if ext = 'GL_EXT_texture_mirror_clamp' then Result := Load_GL_EXT_texture_mirror_clamp
+  else if ext = 'GL_EXT_blend_equation_separate' then Result := Load_GL_EXT_blend_equation_separate
+  else if ext = 'GL_MESA_pack_invert' then Result := Load_GL_MESA_pack_invert
+  else if ext = 'GL_MESA_ycbcr_texture' then Result := Load_GL_MESA_ycbcr_texture
+  else if ext = 'GL_ARB_fragment_program_shadow' then Result := Load_GL_ARB_fragment_program_shadow
+  else if ext = 'GL_EXT_fog_coord' then Result := Load_GL_EXT_fog_coord
+  else if ext = 'GL_NV_fragment_program_option' then Result := Load_GL_NV_fragment_program_option
+  else if ext = 'GL_EXT_pixel_buffer_object' then Result := Load_GL_EXT_pixel_buffer_object
+  else if ext = 'GL_NV_fragment_program2' then Result := Load_GL_NV_fragment_program2
+  else if ext = 'GL_NV_vertex_program2_option' then Result := Load_GL_NV_vertex_program2_option
+  else if ext = 'GL_NV_vertex_program3' then Result := Load_GL_NV_vertex_program3
+  else if ext = 'GL_ARB_draw_buffers' then Result := Load_GL_ARB_draw_buffers
+  else if ext = 'GL_ARB_texture_rectangle' then Result := Load_GL_ARB_texture_rectangle
+  else if ext = 'GL_ARB_color_buffer_float' then Result := Load_GL_ARB_color_buffer_float
+  else if ext = 'GL_ARB_half_float_pixel' then Result := Load_GL_ARB_half_float_pixel
+  else if ext = 'GL_ARB_texture_float' then Result := Load_GL_ARB_texture_float
+  else if ext = 'GL_EXT_texture_compression_dxt1' then Result := Load_GL_EXT_texture_compression_dxt1
+  else if ext = 'GL_ARB_pixel_buffer_object' then Result := Load_GL_ARB_pixel_buffer_object
+  else if ext = 'GL_EXT_framebuffer_object' then Result := Load_GL_EXT_framebuffer_object
+  else if ext = 'GL_version_1_4' then Result := Load_GL_version_1_4
+  else if ext = 'GL_version_1_5' then Result := Load_GL_version_1_5
+  else if ext = 'GL_version_2_0' then Result := Load_GL_version_2_0
+
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/glu.pas b/src/lib/JEDI-SDL/OpenGL/Pas/glu.pas
new file mode 100644
index 00000000..876270ff
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/glu.pas
@@ -0,0 +1,582 @@
+unit glu;
+{
+  $Id: glu.pas,v 1.8 2007/05/20 20:28:31 savage Exp $
+
+  Adaption of the delphi3d.net OpenGL units to FreePascal
+  Sebastian Guenther (sg@freepascal.org) in 2002
+  These units are free to use
+}
+
+(*++ BUILD Version: 0004    // Increment this if a change has global effects
+
+Copyright (c) 1985-95, Microsoft Corporation
+
+Module Name:
+
+    glu.h
+
+Abstract:
+
+    Procedure declarations, constant definitions and macros for the OpenGL
+    Utility Library.
+
+--*)
+
+(*
+** Copyright 1991-1993, Silicon Graphics, Inc.
+** All Rights Reserved.
+**
+** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
+** the contents of this file may not be disclosed to third parties, copied or
+** duplicated in any form, in whole or in part, without the prior written
+** permission of Silicon Graphics, Inc.
+**
+** RESTRICTED RIGHTS LEGEND:
+** Use, duplication or disclosure by the Government is subject to restrictions
+** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
+** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
+** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
+** rights reserved under the Copyright Laws of the United States.
+*)
+
+(*
+** Return the error string associated with a particular error code.
+** This will return 0 for an invalid error code.
+**
+** The generic function prototype that can be compiled for ANSI or Unicode
+** is defined as follows:
+**
+** LPCTSTR APIENTRY gluErrorStringWIN (GLenum errCode);
+*)
+
+{******************************************************************************}
+{                                                                              }
+{ Converted to Delphi by Tom Nuydens (tom@delphi3d.net)                        }
+{ For the latest updates, visit Delphi3D: http://www.delphi3d.net              }
+{                                                                              }
+{ Modified for Delphi/Kylix and FreePascal                                     }
+{    by Dominique Louis ( Dominique@Savagesoftware.com.au)                     }
+{ For the latest updates, visit JEDI-SDL : http://www.sf.net/projects/jedi-sdl }
+{                                                                              }
+{******************************************************************************}
+
+{
+  $Log: glu.pas,v $
+  Revision 1.8  2007/05/20 20:28:31  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.7  2006/11/26 16:35:49  savage
+  Messed up the last change to GLUtessCombineDataProc, had to reapply it. Thanks Michalis.
+
+  Revision 1.6  2006/11/25 23:38:02  savage
+  Changes as proposed by Michalis Kamburelis for better FPC support
+
+  Revision 1.5  2006/11/20 21:20:59  savage
+  Updated to work in MacOS X
+
+  Revision 1.4  2005/05/22 18:52:09  savage
+  Changes as suggested by Michalis Kamburelis. Thanks again.
+
+  Revision 1.3  2004/10/07 21:01:29  savage
+  Fix for FPC
+
+  Revision 1.2  2004/08/14 22:54:30  savage
+  Updated so that Library name defines are correctly defined for MacOS X.
+
+  Revision 1.1  2004/03/30 21:53:54  savage
+  Moved to it's own folder.
+
+  Revision 1.4  2004/02/20 17:09:55  savage
+  Code tidied up in gl, glu and glut, while extensions in glext.pas are now loaded using SDL_GL_GetProcAddress, thus making it more cross-platform compatible, but now more tied to SDL.
+
+  Revision 1.3  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.2  2004/02/14 00:09:19  savage
+  Changed uses to now make use of moduleloader.pas rather than dllfuncs.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  Revision 1.4  2003/06/02 12:32:13  savage
+  Modified Sources to avoid warnings with Delphi by moving CVS Logging to the top of the header files. Hopefully CVS Logging still works.
+
+  Revision 1.3  2003/05/29 22:55:00  savage
+  Make use of new DLLFunctions
+
+  Revision 1.2  2003/05/27 09:39:53  savage
+  Added better Gnu Pascal support.
+
+  Revision 1.1  2003/05/11 13:18:03  savage
+  Newest OpenGL Headers For Delphi, Kylix and FPC
+
+  Revision 1.2  2002/10/13 14:36:47  sg
+  * Win32 fix: The OS symbol is called "Win32", not "Windows"
+
+  Revision 1.1  2002/10/13 13:57:31  sg
+  * Finally, the new units are available: Match the C headers more closely;
+    support for OpenGL extensions, and much more. Based on the Delphi units
+    by Tom Nuydens of delphi3d.net
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+{$IFDEF __GPC__}
+  gpc,
+{$ENDIF}
+  moduleloader,
+  gl;
+
+const
+{$IFDEF WINDOWS}
+  GLuLibName   = 'glu32.dll';
+{$ENDIF}
+
+{$IFDEF UNIX}
+{$IFDEF DARWIN}
+  GLuLibName   = '/System/Library/Frameworks/OpenGL.framework/Libraries/libGLU.dylib';
+{$ELSE}
+  GLuLibName   = 'libGLU.so.1';
+{$ENDIF}
+{$ENDIF}
+
+type
+  TViewPortArray = array[ 0..3 ] of GLint;
+  T16dArray = array[ 0..15 ] of GLdouble;
+  TCallBack = procedure;
+  T3dArray = array[ 0..2 ] of GLdouble;
+  T4pArray = array[ 0..3 ] of Pointer;
+  T4fArray = array[ 0..3 ] of GLfloat;
+{$IFNDEF __GPC__}
+  PPointer = ^Pointer;
+{$ENDIF}
+
+var
+  gluErrorString : function( errCode : GLenum ) : PChar; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluErrorUnicodeStringEXT : function( errCode : GLenum ) : PWideChar; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluGetString : function( name : GLenum ) : PChar; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluOrtho2D   : procedure( left, right, bottom, top : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluPerspective : procedure( fovy, aspect, zNear, zFar : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluPickMatrix : procedure( x, y, width, height : GLdouble; var viewport : TViewPortArray ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluLookAt    : procedure( eyex, eyey, eyez, centerx, centery, centerz, upx, upy, upz : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluProject   : function( objx, objy, objz : GLdouble; var modelMatrix, projMatrix : T16dArray; var viewport : TViewPortArray; winx, winy, winz : PGLdouble ) : Integer; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluUnProject : function( winx, winy, winz : GLdouble; var modelMatrix, projMatrix : T16dArray; var viewport : TViewPortArray; objx, objy, objz : PGLdouble ) : Integer; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluScaleImage : function( format : GLenum; widthin, heightin : GLint; typein : GLenum; const datain : Pointer; widthout, heightout : GLint; typeout : GLenum; dataout : Pointer ) : Integer; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluBuild1DMipmaps : function( target : GLenum; components, width : GLint; format, atype : GLenum; const data : Pointer ) : Integer; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluBuild2DMipmaps : function( target : GLenum; components, width, height : GLint; format, atype : GLenum; const data : Pointer ) : Integer; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+type
+  GLUnurbs = record
+  end; PGLUnurbs = ^GLUnurbs;
+  GLUquadric = record
+  end; PGLUquadric = ^GLUquadric;
+  GLUtesselator = record
+  end; PGLUtesselator = ^GLUtesselator;
+
+  // backwards compatibility:
+  GLUnurbsObj = GLUnurbs; PGLUnurbsObj = PGLUnurbs;
+  GLUquadricObj = GLUquadric; PGLUquadricObj = PGLUquadric;
+  GLUtesselatorObj = GLUtesselator; PGLUtesselatorObj = PGLUtesselator;
+  GLUtriangulatorObj = GLUtesselator; PGLUtriangulatorObj = PGLUtesselator;
+
+var
+  gluNewQuadric : function : PGLUquadric; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluDeleteQuadric : procedure( state : PGLUquadric ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluQuadricNormals : procedure( quadObject : PGLUquadric; normals : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluQuadricTexture : procedure( quadObject : PGLUquadric; textureCoords : GLboolean ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluQuadricOrientation : procedure( quadObject : PGLUquadric; orientation : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluQuadricDrawStyle : procedure( quadObject : PGLUquadric; drawStyle : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluCylinder  : procedure( qobj : PGLUquadric; baseRadius, topRadius, height : GLdouble; slices, stacks : GLint ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluDisk      : procedure( qobj : PGLUquadric; innerRadius, outerRadius : GLdouble; slices, loops : GLint ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluPartialDisk : procedure( qobj : PGLUquadric; innerRadius, outerRadius : GLdouble; slices, loops : GLint; startAngle, sweepAngle : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluSphere    : procedure( qobj : PGLuquadric; radius : GLdouble; slices, stacks : GLint ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluQuadricCallback : procedure( qobj : PGLUquadric; which : GLenum; fn : TCallBack ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNewTess   : function : PGLUtesselator; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluDeleteTess : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessBeginPolygon : procedure( tess : PGLUtesselator; polygon_data : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessBeginContour : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessVertex : procedure( tess : PGLUtesselator; var coords : T3dArray; data : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessEndContour : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessEndPolygon : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessProperty : procedure( tess : PGLUtesselator; which : GLenum; value : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessNormal : procedure( tess : PGLUtesselator; x, y, z : GLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluTessCallback : procedure( tess : PGLUtesselator; which : GLenum; fn : TCallBack ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluGetTessProperty : procedure( tess : PGLUtesselator; which : GLenum; value : PGLdouble ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNewNurbsRenderer : function : PGLUnurbs; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluDeleteNurbsRenderer : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluBeginSurface : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluBeginCurve : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluEndCurve  : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluEndSurface : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluBeginTrim : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluEndTrim   : procedure( nobj : PGLUnurbs ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluPwlCurve  : procedure( nobj : PGLUnurbs; count : GLint; aarray : PGLfloat; stride : GLint; atype : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNurbsCurve : procedure( nobj : PGLUnurbs; nknots : GLint; knot : PGLfloat; stride : GLint; ctlarray : PGLfloat; order : GLint; atype : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNurbsSurface : procedure( nobj : PGLUnurbs; sknot_count : GLint; sknot : PGLfloat; tknot_count : GLint; tknot : PGLfloat; s_stride, t_stride : GLint; ctlarray : PGLfloat; sorder, torder : GLint; atype : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluLoadSamplingMatrices : procedure( nobj : PGLUnurbs; var modelMatrix, projMatrix : T16dArray; var viewport : TViewPortArray ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNurbsProperty : procedure( nobj : PGLUnurbs; aproperty : GLenum; value : GLfloat ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluGetNurbsProperty : procedure( nobj : PGLUnurbs; aproperty : GLenum; value : PGLfloat ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNurbsCallback : procedure( nobj : PGLUnurbs; which : GLenum; fn : TCallBack ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+(**** Callback function prototypes ****)
+
+type
+  // gluQuadricCallback
+  GLUquadricErrorProc = procedure( p : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+  // gluTessCallback
+  GLUtessBeginProc = procedure( p : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessEdgeFlagProc = procedure( p : GLboolean ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessVertexProc = procedure( p : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessEndProc = procedure; {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessErrorProc = procedure( p : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessCombineProc = procedure( var p1 : T3dArray; p2 : T4pArray; p3 : T4fArray; p4 : PPointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessBeginDataProc = procedure( p1 : GLenum; p2 : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessEdgeFlagDataProc = procedure( p1 : GLboolean; p2 : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessVertexDataProc = procedure( p1, p2 : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessEndDataProc = procedure( p : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessErrorDataProc = procedure( p1 : GLenum; p2 : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  GLUtessCombineDataProc = procedure( var p1 : T3dArray; var p2 : T4pArray; var p3 : T4fArray;
+    p4 : PPointer; p5 : Pointer ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+  // gluNurbsCallback
+  GLUnurbsErrorProc = procedure( p : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+
+//***           Generic constants               ****/
+
+const
+  // Version
+  GLU_VERSION_1_1 = 1;
+  GLU_VERSION_1_2 = 1;
+
+  // Errors: (return value 0 = no error)
+  GLU_INVALID_ENUM = 100900;
+  GLU_INVALID_VALUE = 100901;
+  GLU_OUT_OF_MEMORY = 100902;
+  GLU_INCOMPATIBLE_GL_VERSION = 100903;
+
+  // StringName
+  GLU_VERSION  = 100800;
+  GLU_EXTENSIONS = 100801;
+
+  // Boolean
+  GLU_TRUE     = GL_TRUE;
+  GLU_FALSE    = GL_FALSE;
+
+
+  //***           Quadric constants               ****/
+
+  // QuadricNormal
+  GLU_SMOOTH   = 100000;
+  GLU_FLAT     = 100001;
+  GLU_NONE     = 100002;
+
+  // QuadricDrawStyle
+  GLU_POINT    = 100010;
+  GLU_LINE     = 100011;
+  GLU_FILL     = 100012;
+  GLU_SILHOUETTE = 100013;
+
+  // QuadricOrientation
+  GLU_OUTSIDE  = 100020;
+  GLU_INSIDE   = 100021;
+
+  // Callback types:
+  //      GLU_ERROR       = 100103;
+
+
+  //***           Tesselation constants           ****/
+
+  GLU_TESS_MAX_COORD = 1.0E150;
+
+  // TessProperty
+  GLU_TESS_WINDING_RULE = 100140;
+  GLU_TESS_BOUNDARY_ONLY = 100141;
+  GLU_TESS_TOLERANCE = 100142;
+
+  // TessWinding
+  GLU_TESS_WINDING_ODD = 100130;
+  GLU_TESS_WINDING_NONZERO = 100131;
+  GLU_TESS_WINDING_POSITIVE = 100132;
+  GLU_TESS_WINDING_NEGATIVE = 100133;
+  GLU_TESS_WINDING_ABS_GEQ_TWO = 100134;
+
+  // TessCallback
+  GLU_TESS_BEGIN = 100100; // void (CALLBACK*)(GLenum    type)
+  GLU_TESS_VERTEX = 100101; // void (CALLBACK*)(void      *data)
+  GLU_TESS_END = 100102; // void (CALLBACK*)(void)
+  GLU_TESS_ERROR = 100103; // void (CALLBACK*)(GLenum    errno)
+  GLU_TESS_EDGE_FLAG = 100104; // void (CALLBACK*)(GLboolean boundaryEdge)
+  GLU_TESS_COMBINE = 100105; { void (CALLBACK*)(GLdouble  coords[3],
+                                                            void      *data[4],
+                                                            GLfloat   weight[4],
+                                                            void      **dataOut) }
+  GLU_TESS_BEGIN_DATA = 100106; { void (CALLBACK*)(GLenum    type,
+                                                            void      *polygon_data) }
+  GLU_TESS_VERTEX_DATA = 100107; { void (CALLBACK*)(void      *data,
+                                                            void      *polygon_data) }
+  GLU_TESS_END_DATA = 100108; // void (CALLBACK*)(void      *polygon_data)
+  GLU_TESS_ERROR_DATA = 100109; { void (CALLBACK*)(GLenum    errno,
+                                                            void      *polygon_data) }
+  GLU_TESS_EDGE_FLAG_DATA = 100110; { void (CALLBACK*)(GLboolean boundaryEdge,
+                                                            void      *polygon_data) }
+  GLU_TESS_COMBINE_DATA = 100111; { void (CALLBACK*)(GLdouble  coords[3],
+                                                            void      *data[4],
+                                                            GLfloat   weight[4],
+                                                            void      **dataOut,
+                                                            void      *polygon_data) }
+
+  // TessError
+  GLU_TESS_ERROR1 = 100151;
+  GLU_TESS_ERROR2 = 100152;
+  GLU_TESS_ERROR3 = 100153;
+  GLU_TESS_ERROR4 = 100154;
+  GLU_TESS_ERROR5 = 100155;
+  GLU_TESS_ERROR6 = 100156;
+  GLU_TESS_ERROR7 = 100157;
+  GLU_TESS_ERROR8 = 100158;
+
+  GLU_TESS_MISSING_BEGIN_POLYGON = GLU_TESS_ERROR1;
+  GLU_TESS_MISSING_BEGIN_CONTOUR = GLU_TESS_ERROR2;
+  GLU_TESS_MISSING_END_POLYGON = GLU_TESS_ERROR3;
+  GLU_TESS_MISSING_END_CONTOUR = GLU_TESS_ERROR4;
+  GLU_TESS_COORD_TOO_LARGE = GLU_TESS_ERROR5;
+  GLU_TESS_NEED_COMBINE_CALLBACK = GLU_TESS_ERROR6;
+
+  //***           NURBS constants                 ****/
+
+  // NurbsProperty
+  GLU_AUTO_LOAD_MATRIX = 100200;
+  GLU_CULLING  = 100201;
+  GLU_SAMPLING_TOLERANCE = 100203;
+  GLU_DISPLAY_MODE = 100204;
+  GLU_PARAMETRIC_TOLERANCE = 100202;
+  GLU_SAMPLING_METHOD = 100205;
+  GLU_U_STEP   = 100206;
+  GLU_V_STEP   = 100207;
+
+  // NurbsSampling
+  GLU_PATH_LENGTH = 100215;
+  GLU_PARAMETRIC_ERROR = 100216;
+  GLU_DOMAIN_DISTANCE = 100217;
+
+
+  // NurbsTrim
+  GLU_MAP1_TRIM_2 = 100210;
+  GLU_MAP1_TRIM_3 = 100211;
+
+  // NurbsDisplay
+  //      GLU_FILL                = 100012;
+  GLU_OUTLINE_POLYGON = 100240;
+  GLU_OUTLINE_PATCH = 100241;
+
+  // NurbsCallback
+  //      GLU_ERROR               = 100103;
+
+  // NurbsErrors
+  GLU_NURBS_ERROR1 = 100251;
+  GLU_NURBS_ERROR2 = 100252;
+  GLU_NURBS_ERROR3 = 100253;
+  GLU_NURBS_ERROR4 = 100254;
+  GLU_NURBS_ERROR5 = 100255;
+  GLU_NURBS_ERROR6 = 100256;
+  GLU_NURBS_ERROR7 = 100257;
+  GLU_NURBS_ERROR8 = 100258;
+  GLU_NURBS_ERROR9 = 100259;
+  GLU_NURBS_ERROR10 = 100260;
+  GLU_NURBS_ERROR11 = 100261;
+  GLU_NURBS_ERROR12 = 100262;
+  GLU_NURBS_ERROR13 = 100263;
+  GLU_NURBS_ERROR14 = 100264;
+  GLU_NURBS_ERROR15 = 100265;
+  GLU_NURBS_ERROR16 = 100266;
+  GLU_NURBS_ERROR17 = 100267;
+  GLU_NURBS_ERROR18 = 100268;
+  GLU_NURBS_ERROR19 = 100269;
+  GLU_NURBS_ERROR20 = 100270;
+  GLU_NURBS_ERROR21 = 100271;
+  GLU_NURBS_ERROR22 = 100272;
+  GLU_NURBS_ERROR23 = 100273;
+  GLU_NURBS_ERROR24 = 100274;
+  GLU_NURBS_ERROR25 = 100275;
+  GLU_NURBS_ERROR26 = 100276;
+  GLU_NURBS_ERROR27 = 100277;
+  GLU_NURBS_ERROR28 = 100278;
+  GLU_NURBS_ERROR29 = 100279;
+  GLU_NURBS_ERROR30 = 100280;
+  GLU_NURBS_ERROR31 = 100281;
+  GLU_NURBS_ERROR32 = 100282;
+  GLU_NURBS_ERROR33 = 100283;
+  GLU_NURBS_ERROR34 = 100284;
+  GLU_NURBS_ERROR35 = 100285;
+  GLU_NURBS_ERROR36 = 100286;
+  GLU_NURBS_ERROR37 = 100287;
+
+//***           Backwards compatibility for old tesselator           ****/
+
+var
+  gluBeginPolygon : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluNextContour : procedure( tess : PGLUtesselator; atype : GLenum ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+  gluEndPolygon : procedure( tess : PGLUtesselator ); {$IFDEF WINDOWS}stdcall; {$ELSE}cdecl; {$ENDIF}
+
+const
+  // Contours types -- obsolete!
+  GLU_CW       = 100120;
+  GLU_CCW      = 100121;
+  GLU_INTERIOR = 100122;
+  GLU_EXTERIOR = 100123;
+  GLU_UNKNOWN  = 100124;
+
+  // Names without "TESS_" prefix
+  GLU_BEGIN    = GLU_TESS_BEGIN;
+  GLU_VERTEX   = GLU_TESS_VERTEX;
+  GLU_END      = GLU_TESS_END;
+  GLU_ERROR    = GLU_TESS_ERROR;
+  GLU_EDGE_FLAG = GLU_TESS_EDGE_FLAG;
+
+procedure LoadGLu( const dll : PChar );
+procedure FreeGLu;
+
+implementation
+
+var
+  LibGlu       : TModuleHandle;
+
+procedure FreeGLu;
+begin
+
+  @gluErrorString := nil;
+  @gluErrorUnicodeStringEXT := nil;
+  @gluGetString := nil;
+  @gluOrtho2D := nil;
+  @gluPerspective := nil;
+  @gluPickMatrix := nil;
+  @gluLookAt := nil;
+  @gluProject := nil;
+  @gluUnProject := nil;
+  @gluScaleImage := nil;
+  @gluBuild1DMipmaps := nil;
+  @gluBuild2DMipmaps := nil;
+  @gluNewQuadric := nil;
+  @gluDeleteQuadric := nil;
+  @gluQuadricNormals := nil;
+  @gluQuadricTexture := nil;
+  @gluQuadricOrientation := nil;
+  @gluQuadricDrawStyle := nil;
+  @gluCylinder := nil;
+  @gluDisk := nil;
+  @gluPartialDisk := nil;
+  @gluSphere := nil;
+  @gluQuadricCallback := nil;
+  @gluNewTess := nil;
+  @gluDeleteTess := nil;
+  @gluTessBeginPolygon := nil;
+  @gluTessBeginContour := nil;
+  @gluTessVertex := nil;
+  @gluTessEndContour := nil;
+  @gluTessEndPolygon := nil;
+  @gluTessProperty := nil;
+  @gluTessNormal := nil;
+  @gluTessCallback := nil;
+  @gluGetTessProperty := nil;
+  @gluNewNurbsRenderer := nil;
+  @gluDeleteNurbsRenderer := nil;
+  @gluBeginSurface := nil;
+  @gluBeginCurve := nil;
+  @gluEndCurve := nil;
+  @gluEndSurface := nil;
+  @gluBeginTrim := nil;
+  @gluEndTrim := nil;
+  @gluPwlCurve := nil;
+  @gluNurbsCurve := nil;
+  @gluNurbsSurface := nil;
+  @gluLoadSamplingMatrices := nil;
+  @gluNurbsProperty := nil;
+  @gluGetNurbsProperty := nil;
+  @gluNurbsCallback := nil;
+  @gluBeginPolygon := nil;
+  @gluNextContour := nil;
+  @gluEndPolygon := nil;
+
+  UnLoadModule( LibGlu );
+
+end;
+
+procedure LoadGLu( const dll : PChar );
+begin
+
+  FreeGLu;
+
+  if LoadModule( LibGlu, dll ) then
+  begin
+    @gluErrorString := GetModuleSymbol( LibGlu, 'gluErrorString' );
+    @gluErrorUnicodeStringEXT := GetModuleSymbol( LibGlu, 'gluErrorUnicodeStringEXT' );
+    @gluGetString := GetModuleSymbol( LibGlu, 'gluGetString' );
+    @gluOrtho2D := GetModuleSymbol( LibGlu, 'gluOrtho2D' );
+    @gluPerspective := GetModuleSymbol( LibGlu, 'gluPerspective' );
+    @gluPickMatrix := GetModuleSymbol( LibGlu, 'gluPickMatrix' );
+    @gluLookAt := GetModuleSymbol( LibGlu, 'gluLookAt' );
+    @gluProject := GetModuleSymbol( LibGlu, 'gluProject' );
+    @gluUnProject := GetModuleSymbol( LibGlu, 'gluUnProject' );
+    @gluScaleImage := GetModuleSymbol( LibGlu, 'gluScaleImage' );
+    @gluBuild1DMipmaps := GetModuleSymbol( LibGlu, 'gluBuild1DMipmaps' );
+    @gluBuild2DMipmaps := GetModuleSymbol( LibGlu, 'gluBuild2DMipmaps' );
+    @gluNewQuadric := GetModuleSymbol( LibGlu, 'gluNewQuadric' );
+    @gluDeleteQuadric := GetModuleSymbol( LibGlu, 'gluDeleteQuadric' );
+    @gluQuadricNormals := GetModuleSymbol( LibGlu, 'gluQuadricNormals' );
+    @gluQuadricTexture := GetModuleSymbol( LibGlu, 'gluQuadricTexture' );
+    @gluQuadricOrientation := GetModuleSymbol( LibGlu, 'gluQuadricOrientation' );
+    @gluQuadricDrawStyle := GetModuleSymbol( LibGlu, 'gluQuadricDrawStyle' );
+    @gluCylinder := GetModuleSymbol( LibGlu, 'gluCylinder' );
+    @gluDisk := GetModuleSymbol( LibGlu, 'gluDisk' );
+    @gluPartialDisk := GetModuleSymbol( LibGlu, 'gluPartialDisk' );
+    @gluSphere := GetModuleSymbol( LibGlu, 'gluSphere' );
+    @gluQuadricCallback := GetModuleSymbol( LibGlu, 'gluQuadricCallback' );
+    @gluNewTess := GetModuleSymbol( LibGlu, 'gluNewTess' );
+    @gluDeleteTess := GetModuleSymbol( LibGlu, 'gluDeleteTess' );
+    @gluTessBeginPolygon := GetModuleSymbol( LibGlu, 'gluTessBeginPolygon' );
+    @gluTessBeginContour := GetModuleSymbol( LibGlu, 'gluTessBeginContour' );
+    @gluTessVertex := GetModuleSymbol( LibGlu, 'gluTessVertex' );
+    @gluTessEndContour := GetModuleSymbol( LibGlu, 'gluTessEndContour' );
+    @gluTessEndPolygon := GetModuleSymbol( LibGlu, 'gluTessEndPolygon' );
+    @gluTessProperty := GetModuleSymbol( LibGlu, 'gluTessProperty' );
+    @gluTessNormal := GetModuleSymbol( LibGlu, 'gluTessNormal' );
+    @gluTessCallback := GetModuleSymbol( LibGlu, 'gluTessCallback' );
+    @gluGetTessProperty := GetModuleSymbol( LibGlu, 'gluGetTessProperty' );
+    @gluNewNurbsRenderer := GetModuleSymbol( LibGlu, 'gluNewNurbsRenderer' );
+    @gluDeleteNurbsRenderer := GetModuleSymbol( LibGlu, 'gluDeleteNurbsRenderer' );
+    @gluBeginSurface := GetModuleSymbol( LibGlu, 'gluBeginSurface' );
+    @gluBeginCurve := GetModuleSymbol( LibGlu, 'gluBeginCurve' );
+    @gluEndCurve := GetModuleSymbol( LibGlu, 'gluEndCurve' );
+    @gluEndSurface := GetModuleSymbol( LibGlu, 'gluEndSurface' );
+    @gluBeginTrim := GetModuleSymbol( LibGlu, 'gluBeginTrim' );
+    @gluEndTrim := GetModuleSymbol( LibGlu, 'gluEndTrim' );
+    @gluPwlCurve := GetModuleSymbol( LibGlu, 'gluPwlCurve' );
+    @gluNurbsCurve := GetModuleSymbol( LibGlu, 'gluNurbsCurve' );
+    @gluNurbsSurface := GetModuleSymbol( LibGlu, 'gluNurbsSurface' );
+    @gluLoadSamplingMatrices := GetModuleSymbol( LibGlu, 'gluLoadSamplingMatrices' );
+    @gluNurbsProperty := GetModuleSymbol( LibGlu, 'gluNurbsProperty' );
+    @gluGetNurbsProperty := GetModuleSymbol( LibGlu, 'gluGetNurbsProperty' );
+    @gluNurbsCallback := GetModuleSymbol( LibGlu, 'gluNurbsCallback' );
+
+    @gluBeginPolygon := GetModuleSymbol( LibGlu, 'gluBeginPolygon' );
+    @gluNextContour := GetModuleSymbol( LibGlu, 'gluNextContour' );
+    @gluEndPolygon := GetModuleSymbol( LibGlu, 'gluEndPolygon' );
+  end;
+end;
+
+initialization
+
+  LoadGLu( GLuLibName );
+
+finalization
+
+  FreeGLu;
+
+end.
+
diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/glut.pas b/src/lib/JEDI-SDL/OpenGL/Pas/glut.pas
new file mode 100644
index 00000000..04f69267
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/glut.pas
@@ -0,0 +1,688 @@
+unit glut;
+{
+  $Id: glut.pas,v 1.4 2007/05/20 20:28:31 savage Exp $
+
+  Adaption of the delphi3d.net OpenGL units to FreePascal
+  Sebastian Guenther (sg@freepascal.org) in 2002
+  These units are free to use
+}
+
+// Copyright (c) Mark J. Kilgard, 1994, 1995, 1996. */
+
+(* This program is freely distributable without licensing fees  and is
+   provided without guarantee or warrantee expressed or  implied. This
+   program is -not- in the public domain. *)
+
+{******************************************************************************}
+{                                                                              }
+{ Converted to Delphi by Tom Nuydens (tom@delphi3d.net)                        }
+{ For the latest updates, visit Delphi3D: http://www.delphi3d.net              }
+{                                                                              }
+{ Modified for Delphi/Kylix and FreePascal                                     }
+{    by Dominique Louis ( Dominique@Savagesoftware.com.au)                     }
+{ For the latest updates, visit JEDI-SDL : http://www.sf.net/projects/jedi-sdl }
+{                                                                              }
+{******************************************************************************}
+
+{
+  $Log: glut.pas,v $
+  Revision 1.4  2007/05/20 20:28:31  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.3  2006/11/20 21:20:59  savage
+  Updated to work in MacOS X
+
+  Revision 1.2  2004/08/14 22:54:30  savage
+  Updated so that Library name defines are correctly defined for MacOS X.
+
+  Revision 1.1  2004/03/30 21:53:54  savage
+  Moved to it's own folder.
+
+  Revision 1.5  2004/02/20 17:09:55  savage
+  Code tidied up in gl, glu and glut, while extensions in glext.pas are now loaded using SDL_GL_GetProcAddress, thus making it more cross-platform compatible, but now more tied to SDL.
+
+  Revision 1.4  2004/02/14 22:36:29  savage
+  Fixed inconsistencies of using LoadLibrary and LoadModule.
+  Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
+
+  Revision 1.3  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.2  2004/02/14 00:09:19  savage
+  Changed uses to now make use of moduleloader.pas rather than dllfuncs.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  Revision 1.4  2003/06/02 12:32:13  savage
+  Modified Sources to avoid warnings with Delphi by moving CVS Logging to the top of the header files. Hopefully CVS Logging still works.
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+{$IFDEF __GPC__}
+  system,
+  gpc,
+{$ENDIF}
+
+{$IFDEF WINDOWS}
+  Windows,
+{$ENDIF}
+  moduleloader,
+  gl;
+
+type
+  {$IFNDEF __GPC__}
+  PInteger = ^Integer;
+  PPChar = ^PChar;
+  {$ENDIF}
+  TGlutVoidCallback = procedure; {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+  TGlut1IntCallback = procedure(value: Integer); {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+  TGlut2IntCallback = procedure(v1, v2: Integer); {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+  TGlut3IntCallback = procedure(v1, v2, v3: Integer); {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+  TGlut4IntCallback = procedure(v1, v2, v3, v4: Integer); {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+  TGlut1Char2IntCallback = procedure(c: Byte; v1, v2: Integer); {$IFNDEF __GPC__}{$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}{$ENDIF}
+
+const
+{$IFDEF WINDOWS}
+  GlutLibName = 'glut32.dll';
+{$ENDIF}
+
+{$IFDEF UNIX}
+{$IFDEF DARWIN}
+  GlutLibName = '/System/Library/Frameworks/GLUT.framework/Libraries/libglut.dylib';
+{$ELSE}
+  GlutLibName = 'libglut.so';
+{$ENDIF}
+{$ENDIF}
+
+  GLUT_API_VERSION                = 3;
+  GLUT_XLIB_IMPLEMENTATION        = 12;
+  // Display mode bit masks.
+  GLUT_RGB                        = 0;
+  GLUT_RGBA                       = GLUT_RGB;
+  GLUT_INDEX                      = 1;
+  GLUT_SINGLE                     = 0;
+  GLUT_DOUBLE                     = 2;
+  GLUT_ACCUM                      = 4;
+  GLUT_ALPHA                      = 8;
+  GLUT_DEPTH                      = 16;
+  GLUT_STENCIL                    = 32;
+  GLUT_MULTISAMPLE                = 128;
+  GLUT_STEREO                     = 256;
+  GLUT_LUMINANCE                  = 512;
+
+  // Mouse buttons.
+  GLUT_LEFT_BUTTON                = 0;
+  GLUT_MIDDLE_BUTTON              = 1;
+  GLUT_RIGHT_BUTTON               = 2;
+
+  // Mouse button state.
+  GLUT_DOWN                       = 0;
+  GLUT_UP                         = 1;
+
+  // function keys
+  GLUT_KEY_F1                     = 1;
+  GLUT_KEY_F2                     = 2;
+  GLUT_KEY_F3                     = 3;
+  GLUT_KEY_F4                     = 4;
+  GLUT_KEY_F5                     = 5;
+  GLUT_KEY_F6                     = 6;
+  GLUT_KEY_F7                     = 7;
+  GLUT_KEY_F8                     = 8;
+  GLUT_KEY_F9                     = 9;
+  GLUT_KEY_F10                    = 10;
+  GLUT_KEY_F11                    = 11;
+  GLUT_KEY_F12                    = 12;
+  // directional keys
+  GLUT_KEY_LEFT                   = 100;
+  GLUT_KEY_UP                     = 101;
+  GLUT_KEY_RIGHT                  = 102;
+  GLUT_KEY_DOWN                   = 103;
+  GLUT_KEY_PAGE_UP                = 104;
+  GLUT_KEY_PAGE_DOWN              = 105;
+  GLUT_KEY_HOME                   = 106;
+  GLUT_KEY_END                    = 107;
+  GLUT_KEY_INSERT                 = 108;
+
+  // Entry/exit  state.
+  GLUT_LEFT                       = 0;
+  GLUT_ENTERED                    = 1;
+
+  // Menu usage state.
+  GLUT_MENU_NOT_IN_USE            = 0;
+  GLUT_MENU_IN_USE                = 1;
+
+  // Visibility  state.
+  GLUT_NOT_VISIBLE                = 0;
+  GLUT_VISIBLE                    = 1;
+
+  // Window status  state.
+  GLUT_HIDDEN                     = 0;
+  GLUT_FULLY_RETAINED             = 1;
+  GLUT_PARTIALLY_RETAINED         = 2;
+  GLUT_FULLY_COVERED              = 3;
+
+  // Color index component selection values.
+  GLUT_RED                        = 0;
+  GLUT_GREEN                      = 1;
+  GLUT_BLUE                       = 2;
+
+  // Layers for use.
+  GLUT_NORMAL                     = 0;
+  GLUT_OVERLAY                    = 1;
+
+  // Stroke font constants (use these in GLUT program).
+  GLUT_STROKE_ROMAN		  = Pointer(0);
+  GLUT_STROKE_MONO_ROMAN	  = Pointer(1);
+
+  // Bitmap font constants (use these in GLUT program).
+  GLUT_BITMAP_9_BY_15		  = Pointer(2);
+  GLUT_BITMAP_8_BY_13		  = Pointer(3);
+  GLUT_BITMAP_TIMES_ROMAN_10	  = Pointer(4);
+  GLUT_BITMAP_TIMES_ROMAN_24	  = Pointer(5);
+  GLUT_BITMAP_HELVETICA_10	  = Pointer(6);
+  GLUT_BITMAP_HELVETICA_12	  = Pointer(7);
+  GLUT_BITMAP_HELVETICA_18	  = Pointer(8);
+
+  // glutGet parameters.
+  GLUT_WINDOW_X                   = 100;
+  GLUT_WINDOW_Y                   = 101;
+  GLUT_WINDOW_WIDTH               = 102;
+  GLUT_WINDOW_HEIGHT              = 103;
+  GLUT_WINDOW_BUFFER_SIZE         = 104;
+  GLUT_WINDOW_STENCIL_SIZE        = 105;
+  GLUT_WINDOW_DEPTH_SIZE          = 106;
+  GLUT_WINDOW_RED_SIZE            = 107;
+  GLUT_WINDOW_GREEN_SIZE          = 108;
+  GLUT_WINDOW_BLUE_SIZE           = 109;
+  GLUT_WINDOW_ALPHA_SIZE          = 110;
+  GLUT_WINDOW_ACCUM_RED_SIZE      = 111;
+  GLUT_WINDOW_ACCUM_GREEN_SIZE    = 112;
+  GLUT_WINDOW_ACCUM_BLUE_SIZE     = 113;
+  GLUT_WINDOW_ACCUM_ALPHA_SIZE    = 114;
+  GLUT_WINDOW_DOUBLEBUFFER        = 115;
+  GLUT_WINDOW_RGBA                = 116;
+  GLUT_WINDOW_PARENT              = 117;
+  GLUT_WINDOW_NUM_CHILDREN        = 118;
+  GLUT_WINDOW_COLORMAP_SIZE       = 119;
+  GLUT_WINDOW_NUM_SAMPLES         = 120;
+  GLUT_WINDOW_STEREO              = 121;
+  GLUT_WINDOW_CURSOR              = 122;
+  GLUT_SCREEN_WIDTH               = 200;
+  GLUT_SCREEN_HEIGHT              = 201;
+  GLUT_SCREEN_WIDTH_MM            = 202;
+  GLUT_SCREEN_HEIGHT_MM           = 203;
+  GLUT_MENU_NUM_ITEMS             = 300;
+  GLUT_DISPLAY_MODE_POSSIBLE      = 400;
+  GLUT_INIT_WINDOW_X              = 500;
+  GLUT_INIT_WINDOW_Y              = 501;
+  GLUT_INIT_WINDOW_WIDTH          = 502;
+  GLUT_INIT_WINDOW_HEIGHT         = 503;
+  GLUT_INIT_DISPLAY_MODE          = 504;
+  GLUT_ELAPSED_TIME               = 700;
+
+  // glutDeviceGet parameters.
+  GLUT_HAS_KEYBOARD               = 600;
+  GLUT_HAS_MOUSE                  = 601;
+  GLUT_HAS_SPACEBALL              = 602;
+  GLUT_HAS_DIAL_AND_BUTTON_BOX    = 603;
+  GLUT_HAS_TABLET                 = 604;
+  GLUT_NUM_MOUSE_BUTTONS          = 605;
+  GLUT_NUM_SPACEBALL_BUTTONS      = 606;
+  GLUT_NUM_BUTTON_BOX_BUTTONS     = 607;
+  GLUT_NUM_DIALS                  = 608;
+  GLUT_NUM_TABLET_BUTTONS         = 609;
+
+  // glutLayerGet parameters.
+  GLUT_OVERLAY_POSSIBLE           = 800;
+  GLUT_LAYER_IN_USE               = 801;
+  GLUT_HAS_OVERLAY                = 802;
+  GLUT_TRANSPARENT_INDEX          = 803;
+  GLUT_NORMAL_DAMAGED             = 804;
+  GLUT_OVERLAY_DAMAGED            = 805;
+
+  // glutVideoResizeGet parameters.
+  GLUT_VIDEO_RESIZE_POSSIBLE       = 900;
+  GLUT_VIDEO_RESIZE_IN_USE         = 901;
+  GLUT_VIDEO_RESIZE_X_DELTA        = 902;
+  GLUT_VIDEO_RESIZE_Y_DELTA        = 903;
+  GLUT_VIDEO_RESIZE_WIDTH_DELTA    = 904;
+  GLUT_VIDEO_RESIZE_HEIGHT_DELTA   = 905;
+  GLUT_VIDEO_RESIZE_X              = 906;
+  GLUT_VIDEO_RESIZE_Y              = 907;
+  GLUT_VIDEO_RESIZE_WIDTH          = 908;
+  GLUT_VIDEO_RESIZE_HEIGHT         = 909;
+
+  // glutGetModifiers return mask.
+  GLUT_ACTIVE_SHIFT                = 1;
+  GLUT_ACTIVE_CTRL                 = 2;
+  GLUT_ACTIVE_ALT                  = 4;
+
+  // glutSetCursor parameters.
+  // Basic arrows.
+  GLUT_CURSOR_RIGHT_ARROW          = 0;
+  GLUT_CURSOR_LEFT_ARROW           = 1;
+  // Symbolic cursor shapes.
+  GLUT_CURSOR_INFO                 = 2;
+  GLUT_CURSOR_DESTROY              = 3;
+  GLUT_CURSOR_HELP                 = 4;
+  GLUT_CURSOR_CYCLE                = 5;
+  GLUT_CURSOR_SPRAY                = 6;
+  GLUT_CURSOR_WAIT                 = 7;
+  GLUT_CURSOR_TEXT                 = 8;
+  GLUT_CURSOR_CROSSHAIR            = 9;
+  // Directional cursors.
+  GLUT_CURSOR_UP_DOWN              = 10;
+  GLUT_CURSOR_LEFT_RIGHT           = 11;
+  // Sizing cursors.
+  GLUT_CURSOR_TOP_SIDE             = 12;
+  GLUT_CURSOR_BOTTOM_SIDE          = 13;
+  GLUT_CURSOR_LEFT_SIDE            = 14;
+  GLUT_CURSOR_RIGHT_SIDE           = 15;
+  GLUT_CURSOR_TOP_LEFT_CORNER      = 16;
+  GLUT_CURSOR_TOP_RIGHT_CORNER     = 17;
+  GLUT_CURSOR_BOTTOM_RIGHT_CORNER  = 18;
+  GLUT_CURSOR_BOTTOM_LEFT_CORNER   = 19;
+  // Inherit from parent window.
+  GLUT_CURSOR_INHERIT              = 100;
+  // Blank cursor.
+  GLUT_CURSOR_NONE                 = 101;
+  // Fullscreen crosshair (if available).
+  GLUT_CURSOR_FULL_CROSSHAIR       = 102;
+
+  // GLUT game mode sub-API.
+  // glutGameModeGet.
+  GLUT_GAME_MODE_ACTIVE           = 0;
+  GLUT_GAME_MODE_POSSIBLE         = 1;
+  GLUT_GAME_MODE_WIDTH            = 2;
+  GLUT_GAME_MODE_HEIGHT           = 3;
+  GLUT_GAME_MODE_PIXEL_DEPTH      = 4;
+  GLUT_GAME_MODE_REFRESH_RATE     = 5;
+  GLUT_GAME_MODE_DISPLAY_CHANGED  = 6;
+
+var
+// GLUT initialization sub-API.
+  glutInit: procedure(argcp: PInteger; argv: PPChar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutInitDisplayMode: procedure(mode: Word); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutInitDisplayString: procedure(const str: PChar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutInitWindowPosition: procedure(x, y: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutInitWindowSize: procedure(width, height: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutMainLoop: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT window sub-API.
+  glutCreateWindow: function(const title: PChar): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutCreateSubWindow: function(win, x, y, width, height: Integer): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutDestroyWindow: procedure(win: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPostRedisplay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPostWindowRedisplay: procedure(win: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSwapBuffers: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutGetWindow: function: Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetWindow: procedure(win: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetWindowTitle: procedure(const title: PChar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetIconTitle: procedure(const title: PChar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPositionWindow: procedure(x, y: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutReshapeWindow: procedure(width, height: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPopWindow: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPushWindow: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutIconifyWindow: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutShowWindow: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutHideWindow: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutFullScreen: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetCursor: procedure(cursor: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWarpPointer: procedure(x, y: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT overlay sub-API.
+  glutEstablishOverlay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutRemoveOverlay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutUseLayer: procedure(layer: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPostOverlayRedisplay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPostWindowOverlayRedisplay: procedure(win: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutShowOverlay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutHideOverlay: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT menu sub-API.
+  glutCreateMenu: function(callback: TGlut1IntCallback): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutDestroyMenu: procedure(menu: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutGetMenu: function: Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetMenu: procedure(menu: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutAddMenuEntry: procedure(const caption: PChar; value: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutAddSubMenu: procedure(const caption: PChar; submenu: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutChangeToMenuEntry: procedure(item: Integer; const caption: PChar; value: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutChangeToSubMenu: procedure(item: Integer; const caption: PChar; submenu: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutRemoveMenuItem: procedure(item: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutAttachMenu: procedure(button: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutDetachMenu: procedure(button: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUTsub-API.
+  glutDisplayFunc: procedure(f: TGlutVoidCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutReshapeFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutKeyboardFunc: procedure(f: TGlut1Char2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutMouseFunc: procedure(f: TGlut4IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutMotionFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutPassiveMotionFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutEntryFunc: procedure(f: TGlut1IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutVisibilityFunc: procedure(f: TGlut1IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutIdleFunc: procedure(f: TGlutVoidCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutTimerFunc: procedure(millis: Word; f: TGlut1IntCallback; value: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutMenuStateFunc: procedure(f: TGlut1IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSpecialFunc: procedure(f: TGlut3IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSpaceballMotionFunc: procedure(f: TGlut3IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSpaceballRotateFunc: procedure(f: TGlut3IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSpaceballButtonFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutButtonBoxFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutDialsFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutTabletMotionFunc: procedure(f: TGlut2IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutTabletButtonFunc: procedure(f: TGlut4IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutMenuStatusFunc: procedure(f: TGlut3IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutOverlayDisplayFunc: procedure(f:TGlutVoidCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWindowStatusFunc: procedure(f: TGlut1IntCallback); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT color index sub-API.
+  glutSetColor: procedure(cell: Integer; red, green, blue: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutGetColor: function(ndx, component: Integer): GLfloat; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutCopyColormap: procedure(win: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT state retrieval sub-API.
+  glutGet: function(t: GLenum): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutDeviceGet: function(t: GLenum): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT extension support sub-API
+  glutExtensionSupported: function(const name: PChar): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutGetModifiers: function: Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutLayerGet: function(t: GLenum): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT font sub-API
+  glutBitmapCharacter: procedure(font : pointer; character: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutBitmapWidth: function(font : pointer; character: Integer): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutStrokeCharacter: procedure(font : pointer; character: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutStrokeWidth: function(font : pointer; character: Integer): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutBitmapLength: function(font: pointer; const str: PChar): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutStrokeLength: function(font: pointer; const str: PChar): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT pre-built models sub-API
+  glutWireSphere: procedure(radius: GLdouble; slices, stacks: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidSphere: procedure(radius: GLdouble; slices, stacks: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireCone: procedure(base, height: GLdouble; slices, stacks: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidCone: procedure(base, height: GLdouble; slices, stacks: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireCube: procedure(size: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidCube: procedure(size: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireTorus: procedure(innerRadius, outerRadius: GLdouble; sides, rings: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidTorus: procedure(innerRadius, outerRadius: GLdouble; sides, rings: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireDodecahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidDodecahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireTeapot: procedure(size: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidTeapot: procedure(size: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireOctahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidOctahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireTetrahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidTetrahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutWireIcosahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSolidIcosahedron: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT video resize sub-API.
+  glutVideoResizeGet: function(param: GLenum): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutSetupVideoResizing: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutStopVideoResizing: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutVideoResize: procedure(x, y, width, height: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutVideoPan: procedure(x, y, width, height: Integer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+// GLUT debugging sub-API.
+  glutReportErrors: procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+var
+  //example glutGameModeString('1280x1024:32@75');
+  glutGameModeString : procedure (const AString : PChar); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutEnterGameMode : function : integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutLeaveGameMode : procedure; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glutGameModeGet : function (mode : GLenum) : integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF} 
+
+procedure LoadGlut(const dll: PChar);
+procedure FreeGlut;
+
+implementation
+
+var
+  LibGLUT : TModuleHandle;
+
+procedure FreeGlut;
+begin
+
+  UnLoadModule( LibGLUT );
+
+  @glutInit := nil;
+  @glutInitDisplayMode := nil;
+  @glutInitDisplayString := nil;
+  @glutInitWindowPosition := nil;
+  @glutInitWindowSize := nil;
+  @glutMainLoop := nil;
+  @glutCreateWindow := nil;
+  @glutCreateSubWindow := nil;
+  @glutDestroyWindow := nil;
+  @glutPostRedisplay := nil;
+  @glutPostWindowRedisplay := nil;
+  @glutSwapBuffers := nil;
+  @glutGetWindow := nil;
+  @glutSetWindow := nil;
+  @glutSetWindowTitle := nil;
+  @glutSetIconTitle := nil;
+  @glutPositionWindow := nil;
+  @glutReshapeWindow := nil;
+  @glutPopWindow := nil;
+  @glutPushWindow := nil;
+  @glutIconifyWindow := nil;
+  @glutShowWindow := nil;
+  @glutHideWindow := nil;
+  @glutFullScreen := nil;
+  @glutSetCursor := nil;
+  @glutWarpPointer := nil;
+  @glutEstablishOverlay := nil;
+  @glutRemoveOverlay := nil;
+  @glutUseLayer := nil;
+  @glutPostOverlayRedisplay := nil;
+  @glutPostWindowOverlayRedisplay := nil;
+  @glutShowOverlay := nil;
+  @glutHideOverlay := nil;
+  @glutCreateMenu := nil;
+  @glutDestroyMenu := nil;
+  @glutGetMenu := nil;
+  @glutSetMenu := nil;
+  @glutAddMenuEntry := nil;
+  @glutAddSubMenu := nil;
+  @glutChangeToMenuEntry := nil;
+  @glutChangeToSubMenu := nil;
+  @glutRemoveMenuItem := nil;
+  @glutAttachMenu := nil;
+  @glutDetachMenu := nil;
+  @glutDisplayFunc := nil;
+  @glutReshapeFunc := nil;
+  @glutKeyboardFunc := nil;
+  @glutMouseFunc := nil;
+  @glutMotionFunc := nil;
+  @glutPassiveMotionFunc := nil;
+  @glutEntryFunc := nil;
+  @glutVisibilityFunc := nil;
+  @glutIdleFunc := nil;
+  @glutTimerFunc := nil;
+  @glutMenuStateFunc := nil;
+  @glutSpecialFunc := nil;
+  @glutSpaceballMotionFunc := nil;
+  @glutSpaceballRotateFunc := nil;
+  @glutSpaceballButtonFunc := nil;
+  @glutButtonBoxFunc := nil;
+  @glutDialsFunc := nil;
+  @glutTabletMotionFunc := nil;
+  @glutTabletButtonFunc := nil;
+  @glutMenuStatusFunc := nil;
+  @glutOverlayDisplayFunc := nil;
+  @glutWindowStatusFunc := nil;
+  @glutSetColor := nil;
+  @glutGetColor := nil;
+  @glutCopyColormap := nil;
+  @glutGet := nil;
+  @glutDeviceGet := nil;
+  @glutExtensionSupported := nil;
+  @glutGetModifiers := nil;
+  @glutLayerGet := nil;
+  @glutBitmapCharacter := nil;
+  @glutBitmapWidth := nil;
+  @glutStrokeCharacter := nil;
+  @glutStrokeWidth := nil;
+  @glutBitmapLength := nil;
+  @glutStrokeLength := nil;
+  @glutWireSphere := nil;
+  @glutSolidSphere := nil;
+  @glutWireCone := nil;
+  @glutSolidCone := nil;
+  @glutWireCube := nil;
+  @glutSolidCube := nil;
+  @glutWireTorus := nil;
+  @glutSolidTorus := nil;
+  @glutWireDodecahedron := nil;
+  @glutSolidDodecahedron := nil;
+  @glutWireTeapot := nil;
+  @glutSolidTeapot := nil;
+  @glutWireOctahedron := nil;
+  @glutSolidOctahedron := nil;
+  @glutWireTetrahedron := nil;
+  @glutSolidTetrahedron := nil;
+  @glutWireIcosahedron := nil;
+  @glutSolidIcosahedron := nil;
+  @glutVideoResizeGet := nil;
+  @glutSetupVideoResizing := nil;
+  @glutStopVideoResizing := nil;
+  @glutVideoResize := nil;
+  @glutVideoPan := nil;
+  @glutReportErrors := nil;
+
+end;
+
+procedure LoadGlut(const dll: PChar);
+begin
+
+  FreeGlut;
+
+  if LoadModule( LibGLUT, dll ) then
+  begin
+    @glutInit := GetModuleSymbol(LibGLUT, 'glutInit');
+    @glutInitDisplayMode := GetModuleSymbol(LibGLUT, 'glutInitDisplayMode');
+    @glutInitDisplayString := GetModuleSymbol(LibGLUT, 'glutInitDisplayString');
+    @glutInitWindowPosition := GetModuleSymbol(LibGLUT, 'glutInitWindowPosition');
+    @glutInitWindowSize := GetModuleSymbol(LibGLUT, 'glutInitWindowSize');
+    @glutMainLoop := GetModuleSymbol(LibGLUT, 'glutMainLoop');
+    @glutCreateWindow := GetModuleSymbol(LibGLUT, 'glutCreateWindow');
+    @glutCreateSubWindow := GetModuleSymbol(LibGLUT, 'glutCreateSubWindow');
+    @glutDestroyWindow := GetModuleSymbol(LibGLUT, 'glutDestroyWindow');
+    @glutPostRedisplay := GetModuleSymbol(LibGLUT, 'glutPostRedisplay');
+    @glutPostWindowRedisplay := GetModuleSymbol(LibGLUT, 'glutPostWindowRedisplay');
+    @glutSwapBuffers := GetModuleSymbol(LibGLUT, 'glutSwapBuffers');
+    @glutGetWindow := GetModuleSymbol(LibGLUT, 'glutGetWindow');
+    @glutSetWindow := GetModuleSymbol(LibGLUT, 'glutSetWindow');
+    @glutSetWindowTitle := GetModuleSymbol(LibGLUT, 'glutSetWindowTitle');
+    @glutSetIconTitle := GetModuleSymbol(LibGLUT, 'glutSetIconTitle');
+    @glutPositionWindow := GetModuleSymbol(LibGLUT, 'glutPositionWindow');
+    @glutReshapeWindow := GetModuleSymbol(LibGLUT, 'glutReshapeWindow');
+    @glutPopWindow := GetModuleSymbol(LibGLUT, 'glutPopWindow');
+    @glutPushWindow := GetModuleSymbol(LibGLUT, 'glutPushWindow');
+    @glutIconifyWindow := GetModuleSymbol(LibGLUT, 'glutIconifyWindow');
+    @glutShowWindow := GetModuleSymbol(LibGLUT, 'glutShowWindow');
+    @glutHideWindow := GetModuleSymbol(LibGLUT, 'glutHideWindow');
+    @glutFullScreen := GetModuleSymbol(LibGLUT, 'glutFullScreen');
+    @glutSetCursor := GetModuleSymbol(LibGLUT, 'glutSetCursor');
+    @glutWarpPointer := GetModuleSymbol(LibGLUT, 'glutWarpPointer');
+    @glutEstablishOverlay := GetModuleSymbol(LibGLUT, 'glutEstablishOverlay');
+    @glutRemoveOverlay := GetModuleSymbol(LibGLUT, 'glutRemoveOverlay');
+    @glutUseLayer := GetModuleSymbol(LibGLUT, 'glutUseLayer');
+    @glutPostOverlayRedisplay := GetModuleSymbol(LibGLUT, 'glutPostOverlayRedisplay');
+    @glutPostWindowOverlayRedisplay := GetModuleSymbol(LibGLUT, 'glutPostWindowOverlayRedisplay');
+    @glutShowOverlay := GetModuleSymbol(LibGLUT, 'glutShowOverlay');
+    @glutHideOverlay := GetModuleSymbol(LibGLUT, 'glutHideOverlay');
+    @glutCreateMenu := GetModuleSymbol(LibGLUT, 'glutCreateMenu');
+    @glutDestroyMenu := GetModuleSymbol(LibGLUT, 'glutDestroyMenu');
+    @glutGetMenu := GetModuleSymbol(LibGLUT, 'glutGetMenu');
+    @glutSetMenu := GetModuleSymbol(LibGLUT, 'glutSetMenu');
+    @glutAddMenuEntry := GetModuleSymbol(LibGLUT, 'glutAddMenuEntry');
+    @glutAddSubMenu := GetModuleSymbol(LibGLUT, 'glutAddSubMenu');
+    @glutChangeToMenuEntry := GetModuleSymbol(LibGLUT, 'glutChangeToMenuEntry');
+    @glutChangeToSubMenu := GetModuleSymbol(LibGLUT, 'glutChangeToSubMenu');
+    @glutRemoveMenuItem := GetModuleSymbol(LibGLUT, 'glutRemoveMenuItem');
+    @glutAttachMenu := GetModuleSymbol(LibGLUT, 'glutAttachMenu');
+    @glutDetachMenu := GetModuleSymbol(LibGLUT, 'glutDetachMenu');
+    @glutDisplayFunc := GetModuleSymbol(LibGLUT, 'glutDisplayFunc');
+    @glutReshapeFunc := GetModuleSymbol(LibGLUT, 'glutReshapeFunc');
+    @glutKeyboardFunc := GetModuleSymbol(LibGLUT, 'glutKeyboardFunc');
+    @glutMouseFunc := GetModuleSymbol(LibGLUT, 'glutMouseFunc');
+    @glutMotionFunc := GetModuleSymbol(LibGLUT, 'glutMotionFunc');
+    @glutPassiveMotionFunc := GetModuleSymbol(LibGLUT, 'glutPassiveMotionFunc');
+    @glutEntryFunc := GetModuleSymbol(LibGLUT, 'glutEntryFunc');
+    @glutVisibilityFunc := GetModuleSymbol(LibGLUT, 'glutVisibilityFunc');
+    @glutIdleFunc := GetModuleSymbol(LibGLUT, 'glutIdleFunc');
+    @glutTimerFunc := GetModuleSymbol(LibGLUT, 'glutTimerFunc');
+    @glutMenuStateFunc := GetModuleSymbol(LibGLUT, 'glutMenuStateFunc');
+    @glutSpecialFunc := GetModuleSymbol(LibGLUT, 'glutSpecialFunc');
+    @glutSpaceballMotionFunc := GetModuleSymbol(LibGLUT, 'glutSpaceballMotionFunc');
+    @glutSpaceballRotateFunc := GetModuleSymbol(LibGLUT, 'glutSpaceballRotateFunc');
+    @glutSpaceballButtonFunc := GetModuleSymbol(LibGLUT, 'glutSpaceballButtonFunc');
+    @glutButtonBoxFunc := GetModuleSymbol(LibGLUT, 'glutButtonBoxFunc');
+    @glutDialsFunc := GetModuleSymbol(LibGLUT, 'glutDialsFunc');
+    @glutTabletMotionFunc := GetModuleSymbol(LibGLUT, 'glutTabletMotionFunc');
+    @glutTabletButtonFunc := GetModuleSymbol(LibGLUT, 'glutTabletButtonFunc');
+    @glutMenuStatusFunc := GetModuleSymbol(LibGLUT, 'glutMenuStatusFunc');
+    @glutOverlayDisplayFunc := GetModuleSymbol(LibGLUT, 'glutOverlayDisplayFunc');
+    @glutWindowStatusFunc := GetModuleSymbol(LibGLUT, 'glutWindowStatusFunc');
+    @glutSetColor := GetModuleSymbol(LibGLUT, 'glutSetColor');
+    @glutGetColor := GetModuleSymbol(LibGLUT, 'glutGetColor');
+    @glutCopyColormap := GetModuleSymbol(LibGLUT, 'glutCopyColormap');
+    @glutGet := GetModuleSymbol(LibGLUT, 'glutGet');
+    @glutDeviceGet := GetModuleSymbol(LibGLUT, 'glutDeviceGet');
+    @glutExtensionSupported := GetModuleSymbol(LibGLUT, 'glutExtensionSupported');
+    @glutGetModifiers := GetModuleSymbol(LibGLUT, 'glutGetModifiers');
+    @glutLayerGet := GetModuleSymbol(LibGLUT, 'glutLayerGet');
+    @glutBitmapCharacter := GetModuleSymbol(LibGLUT, 'glutBitmapCharacter');
+    @glutBitmapWidth := GetModuleSymbol(LibGLUT, 'glutBitmapWidth');
+    @glutStrokeCharacter := GetModuleSymbol(LibGLUT, 'glutStrokeCharacter');
+    @glutStrokeWidth := GetModuleSymbol(LibGLUT, 'glutStrokeWidth');
+    @glutBitmapLength := GetModuleSymbol(LibGLUT, 'glutBitmapLength');
+    @glutStrokeLength := GetModuleSymbol(LibGLUT, 'glutStrokeLength');
+    @glutWireSphere := GetModuleSymbol(LibGLUT, 'glutWireSphere');
+    @glutSolidSphere := GetModuleSymbol(LibGLUT, 'glutSolidSphere');
+    @glutWireCone := GetModuleSymbol(LibGLUT, 'glutWireCone');
+    @glutSolidCone := GetModuleSymbol(LibGLUT, 'glutSolidCone');
+    @glutWireCube := GetModuleSymbol(LibGLUT, 'glutWireCube');
+    @glutSolidCube := GetModuleSymbol(LibGLUT, 'glutSolidCube');
+    @glutWireTorus := GetModuleSymbol(LibGLUT, 'glutWireTorus');
+    @glutSolidTorus := GetModuleSymbol(LibGLUT, 'glutSolidTorus');
+    @glutWireDodecahedron := GetModuleSymbol(LibGLUT, 'glutWireDodecahedron');
+    @glutSolidDodecahedron := GetModuleSymbol(LibGLUT, 'glutSolidDodecahedron');
+    @glutWireTeapot := GetModuleSymbol(LibGLUT, 'glutWireTeapot');
+    @glutSolidTeapot := GetModuleSymbol(LibGLUT, 'glutSolidTeapot');
+    @glutWireOctahedron := GetModuleSymbol(LibGLUT, 'glutWireOctahedron');
+    @glutSolidOctahedron := GetModuleSymbol(LibGLUT, 'glutSolidOctahedron');
+    @glutWireTetrahedron := GetModuleSymbol(LibGLUT, 'glutWireTetrahedron');
+    @glutSolidTetrahedron := GetModuleSymbol(LibGLUT, 'glutSolidTetrahedron');
+    @glutWireIcosahedron := GetModuleSymbol(LibGLUT, 'glutWireIcosahedron');
+    @glutSolidIcosahedron := GetModuleSymbol(LibGLUT, 'glutSolidIcosahedron');
+    @glutVideoResizeGet := GetModuleSymbol(LibGLUT, 'glutVideoResizeGet');
+    @glutSetupVideoResizing := GetModuleSymbol(LibGLUT, 'glutSetupVideoResizing');
+    @glutStopVideoResizing := GetModuleSymbol(LibGLUT, 'glutStopVideoResizing');
+    @glutVideoResize := GetModuleSymbol(LibGLUT, 'glutVideoResize');
+    @glutVideoPan := GetModuleSymbol(LibGLUT, 'glutVideoPan');
+    @glutReportErrors := GetModuleSymbol(LibGLUT, 'glutReportErrors');
+    @glutGameModeString := GetModuleSymbol(LibGLUT, 'glutGameModeString');
+    @glutEnterGameMode  := GetModuleSymbol(LibGLUT, 'glutEnterGameMode');
+    @glutLeaveGameMode  := GetModuleSymbol(LibGLUT, 'glutLeaveGameMode');
+    @glutGameModeGet    := GetModuleSymbol(LibGLUT, 'glutGameModeGet');
+  end;
+end;
+
+initialization
+  LoadGlut( GlutLibName );
+
+finalization
+  FreeGlut;
+
+end.
diff --git a/src/lib/JEDI-SDL/OpenGL/Pas/glx.pas b/src/lib/JEDI-SDL/OpenGL/Pas/glx.pas
new file mode 100644
index 00000000..9f36d2b5
--- /dev/null
+++ b/src/lib/JEDI-SDL/OpenGL/Pas/glx.pas
@@ -0,0 +1,279 @@
+unit glx;
+{
+  $Id: glx.pas,v 1.3 2006/11/20 21:20:59 savage Exp $
+
+  Translation of the Mesa GLX headers for FreePascal
+  Copyright (C) 1999 Sebastian Guenther
+
+
+  Mesa 3-D graphics library
+  Version:  3.0
+  Copyright (C) 1995-1998  Brian Paul
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Library General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library; if not, write to the Free
+  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+}
+
+// {$MODE delphi}  // objfpc would not work because of direct proc var assignments
+
+{You have to enable Macros (compiler switch "-Sm") for compiling this unit!
+ This is necessary for supporting different platforms with different calling
+ conventions via a single unit.}
+
+{
+  $Log: glx.pas,v $
+  Revision 1.3  2006/11/20 21:20:59  savage
+  Updated to work in MacOS X
+
+  Revision 1.2  2006/04/18 18:38:33  savage
+  fixed boolean test - thanks grudzio
+
+  Revision 1.1  2004/03/30 21:53:55  savage
+  Moved to it's own folder.
+
+  Revision 1.5  2004/02/15 22:48:35  savage
+  More FPC and FreeBSD support changes.
+
+  Revision 1.4  2004/02/14 22:36:29  savage
+  Fixed inconsistencies of using LoadLibrary and LoadModule.
+  Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
+
+  Revision 1.3  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.2  2004/02/14 00:09:19  savage
+  Changed uses to now make use of moduleloader.pas rather than dllfuncs.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  Revision 1.1  2003/05/11 13:18:03  savage
+  Newest OpenGL Headers For Delphi, Kylix and FPC
+
+  Revision 1.1  2002/10/13 13:57:31  sg
+  * Finally, the new units are available: Match the C headers more closely;
+    support for OpenGL extensions, and much more. Based on the Delphi units
+    by Tom Nuydens of delphi3d.net
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+{$IFDEF UNIX}
+  uses
+    {$IFDEF FPC}
+    x,
+    xlib,
+    xutil;
+    {$ELSE}
+    xlib;
+    {$ENDIF}
+  {$DEFINE HasGLX}  // Activate GLX stuff
+{$ELSE}
+  {$MESSAGE Unsupported platform.}
+{$ENDIF}
+
+{$IFNDEF HasGLX}
+  {$MESSAGE GLX not present on this platform.}
+{$ENDIF}
+
+
+// =======================================================
+//   Unit specific extensions
+// =======================================================
+
+// Note: Requires that the GL library has already been initialized
+function InitGLX: Boolean;
+
+var
+  GLXDumpUnresolvedFunctions,
+  GLXInitialized: Boolean;
+
+
+// =======================================================
+//   GLX consts, types and functions
+// =======================================================
+
+// Tokens for glXChooseVisual and glXGetConfig:
+const
+  GLX_USE_GL                            = 1;
+  GLX_BUFFER_SIZE                       = 2;
+  GLX_LEVEL                             = 3;
+  GLX_RGBA                              = 4;
+  GLX_DOUBLEBUFFER                      = 5;
+  GLX_STEREO                            = 6;
+  GLX_AUX_BUFFERS                       = 7;
+  GLX_RED_SIZE                          = 8;
+  GLX_GREEN_SIZE                        = 9;
+  GLX_BLUE_SIZE                         = 10;
+  GLX_ALPHA_SIZE                        = 11;
+  GLX_DEPTH_SIZE                        = 12;
+  GLX_STENCIL_SIZE                      = 13;
+  GLX_ACCUM_RED_SIZE                    = 14;
+  GLX_ACCUM_GREEN_SIZE                  = 15;
+  GLX_ACCUM_BLUE_SIZE                   = 16;
+  GLX_ACCUM_ALPHA_SIZE                  = 17;
+
+  // GLX_EXT_visual_info extension
+  GLX_X_VISUAL_TYPE_EXT                 = $22;
+  GLX_TRANSPARENT_TYPE_EXT              = $23;
+  GLX_TRANSPARENT_INDEX_VALUE_EXT       = $24;
+  GLX_TRANSPARENT_RED_VALUE_EXT         = $25;
+  GLX_TRANSPARENT_GREEN_VALUE_EXT       = $26;
+  GLX_TRANSPARENT_BLUE_VALUE_EXT        = $27;
+  GLX_TRANSPARENT_ALPHA_VALUE_EXT       = $28;
+
+
+  // Error codes returned by glXGetConfig:
+  GLX_BAD_SCREEN                        = 1;
+  GLX_BAD_ATTRIBUTE                     = 2;
+  GLX_NO_EXTENSION                      = 3;
+  GLX_BAD_VISUAL                        = 4;
+  GLX_BAD_CONTEXT                       = 5;
+  GLX_BAD_VALUE                         = 6;
+  GLX_BAD_ENUM                          = 7;
+
+  // GLX 1.1 and later:
+  GLX_VENDOR                            = 1;
+  GLX_VERSION                           = 2;
+  GLX_EXTENSIONS                        = 3;
+
+  // GLX_visual_info extension
+  GLX_TRUE_COLOR_EXT                    = $8002;
+  GLX_DIRECT_COLOR_EXT                  = $8003;
+  GLX_PSEUDO_COLOR_EXT                  = $8004;
+  GLX_STATIC_COLOR_EXT                  = $8005;
+  GLX_GRAY_SCALE_EXT                    = $8006;
+  GLX_STATIC_GRAY_EXT                   = $8007;
+  GLX_NONE_EXT                          = $8000;
+  GLX_TRANSPARENT_RGB_EXT               = $8008;
+  GLX_TRANSPARENT_INDEX_EXT             = $8009;
+
+type
+  // From XLib:
+  {$IFNDEF FPC}
+  TXID = XID;
+  {$ENDIF}
+  XPixmap = TXID;
+  XFont = TXID;
+  XColormap = TXID;
+
+  GLXContext = Pointer;
+  GLXPixmap = TXID;
+  GLXDrawable = TXID;
+  GLXContextID = TXID;
+
+var
+  glXChooseVisual: function(dpy: PDisplay; screen: Integer; var attribList: Integer): PXVisualInfo; cdecl;
+  glXCreateContext: function(dpy: PDisplay; vis: PXVisualInfo; shareList: GLXContext; direct: Boolean): GLXContext; cdecl;
+  glXDestroyContext: procedure(dpy: PDisplay; ctx: GLXContext); cdecl;
+  glXMakeCurrent: function(dpy: PDisplay; drawable: GLXDrawable; ctx: GLXContext): Boolean; cdecl;
+  glXCopyContext: procedure(dpy: PDisplay; src, dst: GLXContext; mask: LongWord); cdecl;
+  glXSwapBuffers: procedure(dpy: PDisplay; drawable: GLXDrawable); cdecl;
+  glXCreateGLXPixmap: function(dpy: PDisplay; visual: PXVisualInfo; pixmap: XPixmap): GLXPixmap; cdecl;
+  glXDestroyGLXPixmap: procedure(dpy: PDisplay; pixmap: GLXPixmap); cdecl;
+  glXQueryExtension: function(dpy: PDisplay; var errorb, event: Integer): Boolean; cdecl;
+  glXQueryVersion: function(dpy: PDisplay; var maj, min: Integer): Boolean; cdecl;
+  glXIsDirect: function(dpy: PDisplay; ctx: GLXContext): Boolean; cdecl;
+  glXGetConfig: function(dpy: PDisplay; visual: PXVisualInfo; attrib: Integer; var value: Integer): Integer; cdecl;
+  glXGetCurrentContext: function: GLXContext; cdecl;
+  glXGetCurrentDrawable: function: GLXDrawable; cdecl;
+  glXWaitGL: procedure; cdecl;
+  glXWaitX: procedure; cdecl;
+  glXUseXFont: procedure(font: XFont; first, count, list: Integer); cdecl;
+
+  // GLX 1.1 and later
+  glXQueryExtensionsString: function(dpy: PDisplay; screen: Integer): PChar; cdecl;
+  glXQueryServerString: function(dpy: PDisplay; screen, name: Integer): PChar; cdecl;
+  glXGetClientString: function(dpy: PDisplay; name: Integer): PChar; cdecl;
+
+  // Mesa GLX Extensions
+  glXCreateGLXPixmapMESA: function(dpy: PDisplay; visual: PXVisualInfo; pixmap: XPixmap; cmap: XColormap): GLXPixmap; cdecl;
+  glXReleaseBufferMESA: function(dpy: PDisplay; d: GLXDrawable): Boolean; cdecl;
+  glXCopySubBufferMESA: procedure(dpy: PDisplay; drawbale: GLXDrawable; x, y, width, height: Integer); cdecl;
+  glXGetVideoSyncSGI: function(var counter: LongWord): Integer; cdecl;
+  glXWaitVideoSyncSGI: function(divisor, remainder: Integer; var count: LongWord): Integer; cdecl;
+
+
+// =======================================================
+//
+// =======================================================
+
+implementation
+
+uses
+  {$IFNDEF __GPC__}
+  SysUtils,
+  {$ENDIF}
+  moduleloader;
+
+(* {$LINKLIB m}  *)
+
+var
+  libGLX: TModuleHandle;
+
+function InitGLXFromLibrary( dll : PChar ): Boolean;
+begin
+  Result := False;
+
+  if not LoadModule( libGLX, dll ) then
+    exit;
+
+  glXChooseVisual := GetModuleSymbol(libglx, 'glXChooseVisual');
+  glXCreateContext := GetModuleSymbol(libglx, 'glXCreateContext');
+  glXDestroyContext := GetModuleSymbol(libglx, 'glXDestroyContext');
+  glXMakeCurrent := GetModuleSymbol(libglx, 'glXMakeCurrent');
+  glXCopyContext := GetModuleSymbol(libglx, 'glXCopyContext');
+  glXSwapBuffers := GetModuleSymbol(libglx, 'glXSwapBuffers');
+  glXCreateGLXPixmap := GetModuleSymbol(libglx, 'glXCreateGLXPixmap');
+  glXDestroyGLXPixmap := GetModuleSymbol(libglx, 'glXDestroyGLXPixmap');
+  glXQueryExtension := GetModuleSymbol(libglx, 'glXQueryExtension');
+  glXQueryVersion := GetModuleSymbol(libglx, 'glXQueryVersion');
+  glXIsDirect := GetModuleSymbol(libglx, 'glXIsDirect');
+  glXGetConfig := GetModuleSymbol(libglx, 'glXGetConfig');
+  glXGetCurrentContext := GetModuleSymbol(libglx, 'glXGetCurrentContext');
+  glXGetCurrentDrawable := GetModuleSymbol(libglx, 'glXGetCurrentDrawable');
+  glXWaitGL := GetModuleSymbol(libglx, 'glXWaitGL');
+  glXWaitX := GetModuleSymbol(libglx, 'glXWaitX');
+  glXUseXFont := GetModuleSymbol(libglx, 'glXUseXFont');
+  // GLX 1.1 and later
+  glXQueryExtensionsString := GetModuleSymbol(libglx, 'glXQueryExtensionsString');
+  glXQueryServerString := GetModuleSymbol(libglx, 'glXQueryServerString');
+  glXGetClientString := GetModuleSymbol(libglx, 'glXGetClientString');
+  // Mesa GLX Extensions
+  glXCreateGLXPixmapMESA := GetModuleSymbol(libglx, 'glXCreateGLXPixmapMESA');
+  glXReleaseBufferMESA := GetModuleSymbol(libglx, 'glXReleaseBufferMESA');
+  glXCopySubBufferMESA := GetModuleSymbol(libglx, 'glXCopySubBufferMESA');
+  glXGetVideoSyncSGI := GetModuleSymbol(libglx, 'glXGetVideoSyncSGI');
+  glXWaitVideoSyncSGI := GetModuleSymbol(libglx, 'glXWaitVideoSyncSGI');
+
+  GLXInitialized := True;
+  Result := True;
+end;
+
+function InitGLX: Boolean;
+begin
+  Result := InitGLXFromLibrary('libGL.so.1') or
+            InitGLXFromLibrary('libMesaGL.so') or
+            InitGLXFromLibrary('libMesaGL.so.3');
+end;
+
+
+initialization
+  InitGLX;
+finalization
+  UnloadModule(libGLX);
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/Readme.txt b/src/lib/JEDI-SDL/SDL/Pas/Readme.txt
new file mode 100644
index 00000000..f176d0c9
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/Readme.txt
@@ -0,0 +1,27 @@
+Delphi interface unit for OpenGL version 1.2 compilable with Delphi 3-6 and Kylix.
+
+This unit is open source under the Mozilla Public License and 
+the original author is Dipl. Ing. Mike Lischke (public@lischke-online.de).
+
+You can obtain this unit also from the JEDI (Joint Endeavor of Delphi Innovators) 
+API page at www.delphi-jedi.org.
+
+Note for GLScene users: Eric Grange has provided a general vector types unit which 
+resolves conflicts for types which are defined in OpenGL12.pas as well as Geometry.pas.
+This unit is located in the sub folder "GLScene AddOn".
+Please add this unit to the uses clause of OpenGL12.pas and remove the few types which 
+are already declared in VectorTypes.pas.
+
+For tests and as starting point three demos are included into the package. Two of them (GLDiag and GLTest)
+need the (also provided) simple OpenGL control GLControl (see "GLControl\Package").
+
+- Basic is a very simple test program which only uses an empty form.
+- GLTest (in GLControl) uses GLControl to show four rendering contexts simultanously.
+- GLDiag is a diagnosis tool similar to DXDiag which shows some properties of the current
+   OpenGL driver implementation.
+
+Have fun and 
+
+Ciao, Mike
+www.lischke-online.de
+www.delphi-unicode.net
\ No newline at end of file
diff --git a/src/lib/JEDI-SDL/SDL/Pas/jedi-sdl.inc b/src/lib/JEDI-SDL/SDL/Pas/jedi-sdl.inc
new file mode 100644
index 00000000..31817d24
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/jedi-sdl.inc
@@ -0,0 +1,442 @@
+{
+  $Id: jedi-sdl.inc,v 1.15 2007/05/29 21:30:48 savage Exp $
+}
+{******************************************************************************}
+{                                                                              }
+{       Borland Delphi SDL - Simple DirectMedia Layer                          }
+{       Global Conditional Definitions for JEDI-SDL cross-compilation          }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{  Prof. Abimbola Olowofoyeku <http://www.bigfoot.com/~African_Chief/>         }
+{                                                                              }
+{ Portions created by Prof. Abimbola Olowofoyeku are                           }
+{ Copyright (C) 2000 - 2100 Prof. Abimbola Olowofoyeku.                        }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{  Prof. Abimbola Olowofoyeku <http://www.bigfoot.com/~African_Chief/>         }
+{  Dominqiue Louis <Dominique@SavageSoftware.com.au>                           }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{ This code has been copied from...                                            }
+{ Global Conditional Definitions for Chief's UNZIP package                     }
+{ By Prof. Abimbola Olowofoyeku (The African Chief)                            }
+{          http://www.bigfoot.com/~African_Chief/                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   2003-04-03   DL - Initial addition                                         }
+{                                                                              }
+{   2003-04-07   DL - Added Macro ON derective for FPC and OpenGL and removed  }
+{                WEAKPACKAGE derective. WEAKPACKAGE should be set when         }
+{                appropriate.                                                  }
+{                                                                              }
+{   2003-04-23 - DL : under instruction from Alexey Barkovoy I have added      }
+{                          better TMT Pascal support and under instruction     }
+{                          from Prof. Abimbola Olowofoyeku (The African Chief) }
+{                          I have added better Gnu Pascal support              }
+{                                                                              }
+{   2004-01-19 - DL : Under instruction from Marco van de Voort, I have added  }
+{                     Better FPC support for FreeBSD.                          }
+{                                                                              }
+(*
+  $Log: jedi-sdl.inc,v $
+  Revision 1.15  2007/05/29 21:30:48  savage
+  Changes as suggested by Almindor for 64bit compatibility.
+
+  Revision 1.14  2007/05/20 20:29:11  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.13  2007/01/21 15:51:45  savage
+  Added Delphi 2006 support
+
+  Revision 1.12  2006/11/19 18:41:01  savage
+  removed THREADING ON flag as it is no longer needed in latest versions of FPC.
+
+  Revision 1.11  2006/01/04 00:52:41  drellis
+  Updated to include defined for ENDIAN values, SDL_BYTEORDER should now be correctly defined depending onthe platform. Code taken from sdl_mixer
+
+  Revision 1.10  2005/05/22 18:42:31  savage
+  Changes as suggested by Michalis Kamburelis. Thanks again.
+
+  Revision 1.9  2004/12/23 23:42:17  savage
+  Applied Patches supplied by Michalis Kamburelis ( THANKS! ), for greater FreePascal compatability.
+
+  Revision 1.8  2004/10/20 22:43:04  savage
+  Ensure that UNSAFE type warning are off in D9 as well
+
+  Revision 1.7  2004/04/05 09:59:51  savage
+  Changes for FreePacal as suggested by Marco
+
+  Revision 1.6  2004/03/31 22:18:15  savage
+  Small comment for turning off warning under GnuPascal
+
+  Revision 1.5  2004/03/30 22:41:02  savage
+  Added extra commenting due to previous compiler directive
+
+  Revision 1.4  2004/03/30 22:08:33  savage
+  Added Kylix Define
+
+  Revision 1.3  2004/03/30 21:34:40  savage
+  {$H+} needed for FPC compatiblity
+
+  Revision 1.2  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+*)
+{******************************************************************************}
+
+{.$define Debug}           { uncomment for debugging }
+
+{$IFNDEF FPC}
+  {$IFDEF __GPC__}
+    {$I-}
+    {$W-} // turn off GPC warnings
+    {$X+}
+  {$ELSE} {__GPC__}
+    {$IFDEF Debug}
+      {$F+,D+,Q-,L+,R+,I-,S+,Y+,A+}
+    {$ELSE}
+      {$F+,Q-,R-,S-,I-,A+}
+    {$ENDIF}
+  {$ENDIF} {__GPC__}
+{$ELSE}  {FPC}
+  //{$M+}
+{$ENDIF} {FPC}
+
+{$IFDEF LINUX}
+{$DEFINE UNIX}
+{$ENDIF}
+
+{$IFDEF ver70}
+   {$IFDEF Windows}
+     {$DEFINE Win16}
+   {$ENDIF Windows}
+   {$IFDEF MSDOS}
+     {$DEFINE NO_EXPORTS}
+   {$ENDIF MSDOS}
+   {$IFDEF DPMI}
+     {$DEFINE BP_DPMI}
+   {$ENDIF}
+   {$DEFINE OS_16_BIT}
+   {$DEFINE __OS_DOS__}
+{$ENDIF ver70}
+
+{$IFDEF ver80}
+   {$DEFINE Delphi}      {Delphi 1.x}
+   {$DEFINE Delphi16}
+   {$DEFINE Win16}
+   {$DEFINE OS_16_BIT}
+   {$DEFINE __OS_DOS__}
+{$ENDIF ver80}
+
+{$IFDEF ver90}
+   {$DEFINE Delphi}      {Delphi 2.x}
+   {$DEFINE Delphi32}
+   {$DEFINE WIN32}
+   {$DEFINE WINDOWS}
+{$ENDIF ver90}
+
+{$IFDEF ver100}
+   {$DEFINE Delphi}      {Delphi 3.x}
+   {$DEFINE Delphi32}
+   {$DEFINE WIN32}
+   {$DEFINE WINDOWS}
+{$ENDIF ver100}
+
+{$IFDEF ver93}
+   {$DEFINE Delphi}      {C++ Builder 1.x}
+   {$DEFINE Delphi32}
+   {$DEFINE WINDOWS}
+{$ENDIF ver93}
+
+{$IFDEF ver110}
+   {$DEFINE Delphi}      {C++ Builder 3.x}
+   {$DEFINE Delphi32}
+   {$DEFINE WINDOWS}
+{$ENDIF ver110}
+
+{$IFDEF ver120}
+   {$DEFINE Delphi}      {Delphi 4.x}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Has_Int64}
+   {$DEFINE WINDOWS}
+{$ENDIF ver120}
+
+{$IFDEF ver130}
+   {$DEFINE Delphi}      {Delphi 5.x}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Has_Int64}
+   {$DEFINE WINDOWS}
+{$ENDIF ver130}
+
+{$IFDEF ver140}
+   {$DEFINE Delphi}      {Delphi 6.x}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver140}
+
+{$IFDEF ver150}
+   {$DEFINE Delphi}      {Delphi 7.x}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Delphi7UP}
+   {$WARN UNSAFE_TYPE OFF} {Disable warning for unsafe types in Delphi 7}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver150}
+
+{$IFDEF ver160}
+   {$DEFINE Delphi}      {Delphi 8}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Delphi7UP}
+   {$DEFINE Delphi8UP}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver160}
+
+{$IFDEF ver170}
+   {$DEFINE Delphi}      {Delphi 2005}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Delphi7UP}
+   {$DEFINE Delphi8UP}
+   {$DEFINE Delphi9UP}
+   {$WARN UNSAFE_TYPE OFF} {Disable warning for unsafe types in Delphi 7}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver170}
+
+{$IFDEF ver180}
+   {$DEFINE Delphi}      {Delphi 2006}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Delphi7UP}
+   {$DEFINE Delphi8UP}
+   {$DEFINE Delphi9UP}
+   {$DEFINE Delphi10UP}
+   {$WARN UNSAFE_TYPE OFF} {Disable warning for unsafe types in Delphi 7}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver180}
+
+{$IFDEF ver185}
+   {$DEFINE Delphi}      {Delphi 2007}
+   {$DEFINE Delphi32}
+   {$DEFINE Delphi4UP}
+   {$DEFINE Delphi5UP}
+   {$DEFINE Delphi6UP}
+   {$DEFINE Delphi7UP}
+   {$DEFINE Delphi8UP}
+   {$DEFINE Delphi9UP}
+   {$DEFINE Delphi10UP}
+   {$WARN UNSAFE_TYPE OFF} {Disable warning for unsafe types in Delphi 7}
+   {$DEFINE Has_Int64}
+   {$DEFINE HAS_TYPES}
+{$ENDIF ver180}
+
+{$IFDEF UNIX}
+  {$ifdef VER140}    // Kylix 1 & 2
+    {$DEFINE KYLIX}
+    {$DEFINE KYLIX1UP}
+    {$DEFINE KYLIX2UP}
+    {$DEFINE HAS_TYPES}
+  {$endif}
+
+  {$ifdef VER150}   // Kylix 3
+    {$DEFINE KYLIX}
+    {$DEFINE KYLIX1UP}
+    {$DEFINE KYLIX2UP}
+    {$DEFINE KYLIX3UP}
+    {$DEFINE HAS_TYPES}
+  {$endif}
+{$ENDIF UNIX}
+
+{$IFDEF VirtualPascal} {  Virtual Pascal 2.x }
+   {$DEFINE Delphi}    {  Use Delphi Syntax }
+   {$DEFINE VP2}
+   {&Delphi+}
+{$ENDIF VirtualPascal}
+
+{$IFDEF Delphi}
+  {$DEFINE Windows}
+  {$DEFINE USE_STDCALL}
+  {$MINENUMSIZE 4}
+  //{$ALIGN ON}
+{$ENDIF Delphi}
+
+{$IFDEF FPC}
+  {$MODE Delphi}          { use Delphi compatibility mode }
+  {$H+}
+  {$PACKRECORDS C}        // Added for record
+  {$PACKENUM 4}           // Use 4-byte enums
+  {$MACRO ON}             // Added For OpenGL
+  {$DEFINE Delphi}
+  {$DEFINE UseAT}
+  {$UNDEF USE_STDCALL}
+  {$DEFINE OS_BigMem}
+  {$DEFINE NO_EXPORTS}
+  {$DEFINE Has_Int64}
+  {$DEFINE NOCRT}
+  {$IFDEF UNIX}
+     {$DEFINE fpc_unix}
+  {$ELSE}
+     {$DEFINE __OS_DOS__}
+  {$ENDIF}
+  {$IFDEF MSWINDOWS}
+   {$DEFINE UseWin}
+  {$ENDIF}
+  {$DEFINE HAS_TYPES}
+{$ENDIF FPC}
+
+{$IFDEF Win16}
+  {$K+}   {smart callbacks}
+{$ENDIF Win16}
+
+ {$IFDEF OS2}
+    {$UNDEF Windows}
+    {$DEFINE UseWin}
+    {$DEFINE OS_BigMem}
+ {$ENDIF OS2}
+
+{$IFDEF __GPC__}
+  {$UNDEF UseWin}
+  {$UNDEF USE_STDCALL}
+  {$DEFINE OS_BigMem}
+  {$DEFINE NO_EXPORTS}
+  {$DEFINE NOCRT}
+  {$DEFINE cdecl attribute(cdecl)}
+{$ENDIF}
+
+{$IFDEF __TMT__}
+  {$DEFINE OS_BigMem}
+  {$DEFINE NO_EXPORTS}
+  {$DEFINE __OS_DOS__}
+  {$DEFINE UseAT}
+  {$IFNDEF MSDOS}
+    {$DEFINE USE_STDCALL}
+  {$ENDIF}
+
+  {$IFDEF __WIN32__}
+    {$DEFINE Win32}
+    {$DEFINE UseWin}
+    {$DEFINE NOCRT}
+    {$DEFINE Win32}
+    {$IFNDEF __CON__}
+      {$DEFINE Windows}
+    {$ENDIF}
+  {$ENDIF}
+
+  {$A+}  // Word alignment data
+  {$OA+} // Objects and structures align
+{$ENDIF}
+
+{$IFDEF MSWINDOWS}
+  {$DEFINE OS_BigMem}
+{$ELSE MSWINDOWS}
+  {$IFDEF ver70}
+    {$DEFINE assembler}
+  {$ENDIF} { use 16-bit assembler! }
+{$ENDIF MSWINDOWS}
+
+{ ************************** dos/dos-like platforms **************}
+{$IFDEF Windows}
+   {$DEFINE __OS_DOS__}
+   {$DEFINE UseWin}
+   {$DEFINE MSWINDOWS}
+{$ENDIF Delphi}
+
+{$IFDEF OS2}
+   {$DEFINE __OS_DOS__}
+   {$DEFINE Can_Use_DLL}
+{$ENDIF Delphi}
+
+{$IFDEF UseWin}
+   {$DEFINE Can_Use_DLL}
+{$ENDIF}
+
+{$IFDEF Win16}
+   {$DEFINE Can_Use_DLL}
+{$ENDIF}
+
+{$IFDEF BP_DPMI}
+   {$DEFINE Can_Use_DLL}
+{$ENDIF}
+
+{$IFDEF USE_STDCALL}
+   {$IFNDEF __TMT__}
+     {$DEFINE BY_NAME}
+   {$ENDIF}
+{$ENDIF}
+
+{$IFNDEF ver70}
+  {$UNDEF assembler}
+{$ENDIF}
+
+{*************** define LITTLE ENDIAN platforms ********************}
+
+
+{$IFDEF Delphi}
+{$DEFINE IA32}
+{$ENDIF}
+
+{$IFDEF KYLIX}
+{$DEFINE IA32}
+{$ENDIF}
+
+{$IFDEF FPC}
+{$IFDEF FPC_LITTLE_ENDIAN}
+   {$DEFINE IA32}
+{$ELSE FPC_LITTLE_ENDIAN}
+   {$UNDEF IA32}
+{$ENDIF FPC_LITTLE_ENDIAN}
+{$ENDIF}
diff --git a/src/lib/JEDI-SDL/SDL/Pas/libxmlparser.pas b/src/lib/JEDI-SDL/SDL/Pas/libxmlparser.pas
new file mode 100644
index 00000000..63e7b7fb
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/libxmlparser.pas
@@ -0,0 +1,2688 @@
+(**
+===============================================================================================
+Name    : LibXmlParser
+===============================================================================================
+Project : All Projects
+===============================================================================================
+Subject : Progressive XML Parser for all types of XML Files
+===============================================================================================
+Author  : Stefan Heymann
+          Eschenweg 3
+          72076 Tübingen
+          GERMANY
+
+E-Mail:   stefan@destructor.de
+URL:      www.destructor.de
+===============================================================================================
+Source, Legals ("Licence")
+--------------------------
+The official site to get this parser is http://www.destructor.de/
+
+Usage and Distribution of this Source Code is ruled by the
+"Destructor.de Source code Licence" (DSL) which comes with this file or
+can be downloaded at http://www.destructor.de/
+
+IN SHORT: Usage and distribution of this source code is free.
+          You use it completely on your own risk.
+
+Postcardware
+------------
+If you like this code, please send a postcard of your city to my above address.
+===============================================================================================
+!!!  All parts of this code which are not finished or not conforming exactly to
+     the XmlSpec are marked with three exclamation marks
+
+-!-  Parts where the parser may be able to detect errors in the document's syntax are
+     marked with the dash-exlamation mark-dash sequence.
+===============================================================================================
+Terminology:
+------------
+- Start:   Start of a buffer part
+- Final:   End (last character) of a buffer part
+- DTD:     Document Type Definition
+- DTDc:    Document Type Declaration
+- XMLSpec: The current W3C XML Recommendation (version 1.0 as of 1998-02-10), Chapter No.
+- Cur*:    Fields concerning the "Current" part passed back by the "Scan" method
+===============================================================================================
+Scanning the XML document
+-------------------------
+- Create TXmlParser Instance                     MyXml := TXmlParser.Create;
+- Load XML Document                              MyXml.LoadFromFile (Filename);
+- Start Scanning                                 MyXml.StartScan;
+- Scan Loop                                      WHILE MyXml.Scan DO
+- Test for Part Type                               CASE MyXml.CurPartType OF
+- Handle Parts                                       ... : ;;;
+- Handle Parts                                       ... : ;;;
+- Handle Parts                                       ... : ;;;
+                                                     END;
+- Destroy                                        MyXml.Free;
+===============================================================================================
+Loading the XML document
+------------------------
+You can load the XML document from a file with the "LoadFromFile" method.
+It is beyond the scope of this parser to perform HTTP or FTP accesses. If you want your
+application to handle such requests (URLs), you can load the XML via HTTP or FTP or whatever
+protocol and hand over the data buffer using the "LoadFromBuffer" or "SetBuffer" method.
+"LoadFromBuffer" loads the internal buffer of TXmlParser with the given null-terminated
+string, thereby creating a copy of that buffer.
+"SetBuffer" just takes the pointer to another buffer, which means that the given
+buffer pointer must be valid while the document is accessed via TXmlParser.
+===============================================================================================
+Encodings:
+----------
+This XML parser kind of "understands" the following encodings:
+- UTF-8
+- ISO-8859-1
+- Windows-1252
+
+Any flavor of multi-byte characters (and this includes UTF-16) is not supported. Sorry.
+
+Every string which has to be passed to the application passes the virtual method
+"TranslateEncoding" which translates the string from the current encoding (stored in
+"CurEncoding") into the encoding the application wishes to receive.
+The "TranslateEncoding" method that is built into TXmlParser assumes that the application
+wants to receive Windows ANSI (Windows-1252, about the same as ISO-8859-1) and is able
+to convert UTF-8 and ISO-8859-1 encodings.
+For other source and target encodings, you will have to override "TranslateEncoding".
+===============================================================================================
+Buffer Handling
+---------------
+- The document must be loaded completely into a piece of RAM
+- All character positions are referenced by PChar pointers
+- The TXmlParser instance can either "own" the buffer itself (then, FBufferSize is > 0)
+  or reference the buffer of another instance or object (then, FBuffersize is 0 and
+  FBuffer is not NIL)
+- The Property DocBuffer passes back a pointer to the first byte of the document. If there
+  is no document stored (FBuffer is NIL), the DocBuffer returns a pointer to a NULL character.
+===============================================================================================
+Whitespace Handling
+-------------------
+The TXmlParser property "PackSpaces" determines how Whitespace is returned in Text Content:
+While PackSpaces is true, all leading and trailing whitespace characters are trimmed of, all
+Whitespace is converted to Space #x20 characters and contiguous Whitespace characters are
+compressed to one.
+If the "Scan" method reports a ptContent part, the application can get the original text
+with all whitespace characters by extracting the characters from "CurStart" to "CurFinal".
+If the application detects an xml:space attribute, it can set "PackSpaces" accordingly or
+use CurStart/CurFinal.
+Please note that TXmlParser does _not_ normalize Line Breaks to single LineFeed characters
+as the XmlSpec requires (XmlSpec 2.11).
+The xml:space attribute is not handled by TXmlParser. This is on behalf of the application.
+===============================================================================================
+Non-XML-Conforming
+------------------
+TXmlParser does not conform 100 % exactly to the XmlSpec:
+- UTF-16 is not supported (XmlSpec 2.2)
+  (Workaround: Convert UTF-16 to UTF-8 and hand the buffer over to TXmlParser)
+- As the parser only works with single byte strings, all Unicode characters > 255
+  can currently not be handled correctly.
+- Line breaks are not normalized to single Linefeed #x0A characters (XmlSpec 2.11)
+  (Workaround: The Application can access the text contents on its own [CurStart, CurFinal],
+  thereby applying every normalization it wishes to)
+- The attribute value normalization does not work exactly as defined in the
+  Second Edition of the XML 1.0 specification.
+- See also the code parts marked with three consecutive exclamation marks. These are
+  parts which are not finished in the current code release.
+
+This list may be incomplete, so it may grow if I get to know any other points.
+As work on the parser proceeds, this list may also shrink.
+===============================================================================================
+Things Todo
+-----------
+- Introduce a new event/callback which is called when there is an unresolvable
+  entity or character reference
+- Support Unicode
+- Use Streams instead of reading the whole XML into memory
+===============================================================================================
+Change History, Version numbers
+-------------------------------
+The Date is given in ISO Year-Month-Day (YYYY-MM-DD) order.
+Versions are counted from 1.0.0 beginning with the version from 2000-03-16.
+Unreleased versions don't get a version number.
+
+Date        Author Version Changes
+-----------------------------------------------------------------------------------------------
+2000-03-16  HeySt  1.0.0   Start
+2000-03-28  HeySt  1.0.1   Initial Publishing of TXmlParser on the destructor.de Web Site
+2000-03-30  HeySt  1.0.2   TXmlParser.AnalyzeCData: Call "TranslateEncoding" for CurContent
+2000-03-31  HeySt  1.0.3   Deleted the StrPosE function (was not needed anyway)
+2000-04-04  HeySt  1.0.4   TDtdElementRec modified: Start/Final for all Elements;
+                           Should be backwards compatible.
+                           AnalyzeDtdc: Set CurPartType to ptDtdc
+2000-04-23  HeySt  1.0.5   New class TObjectList. Eliminated reference to the Delphi 5
+                           "Contnrs" unit so LibXmlParser is Delphi 4 compatible.
+2000-07-03  HeySt  1.0.6   TNvpNode: Added Constructor
+2000-07-11  HeySt  1.0.7   Removed "Windows" from USES clause
+                           Added three-exclamation-mark comments for Utf8ToAnsi/AnsiToUtf8
+                           Added three-exclamation-mark comments for CHR function calls
+2000-07-23  HeySt  1.0.8   TXmlParser.Clear: CurAttr.Clear; EntityStack.Clear;
+                           (This was not a bug; just defensive programming)
+2000-07-29  HeySt  1.0.9   TNvpList: Added methods: Node(Index), Value(Index), Name(Index);
+2000-10-07  HeySt          Introduced Conditional Defines
+                           Uses Contnrs unit and its TObjectList class again for
+                           Delphi 5 and newer versions
+2001-01-30  HeySt          Introduced Version Numbering
+                           Made LoadFromFile and LoadFromBuffer BOOLEAN functions
+                           Introduced FileMode parameter for LoadFromFile
+                           BugFix: TAttrList.Analyze: Must add CWhitespace to ExtractName call
+                           Comments worked over
+2001-02-28  HeySt  1.0.10  Completely worked over and tested the UTF-8 functions
+                           Fixed a bug in TXmlParser.Scan which caused it to start over when it
+                           was called after the end of scanning, resulting in an endless loop
+                           TEntityStack is now a TObjectList instead of TList
+2001-07-03  HeySt  1.0.11  Updated Compiler Version IFDEFs for Kylix
+2001-07-11  HeySt  1.0.12  New TCustomXmlScanner component (taken over from LibXmlComps.pas)
+2001-07-14  HeySt  1.0.13  Bugfix TCustomXmlScanner.FOnTranslateEncoding
+2001-10-22  HeySt          Don't clear CurName anymore when the parser finds a CDATA section.
+2001-12-03  HeySt  1.0.14  TObjectList.Clear: Make call to INHERITED method (fixes a memory leak)
+2001-12-05  HeySt  1.0.15  TObjectList.Clear: removed call to INHERITED method
+                           TObjectList.Destroy: Inserted SetCapacity call.
+                           Reduces need for frequent re-allocation of pointer buffer
+                           Dedicated to my father, Theodor Heymann
+2002-06-26  HeySt  1.0.16  TXmlParser.Scan: Fixed a bug with PIs whose name is beginning
+                           with 'xml'. Thanks to Uwe Kamm for submitting this bug.
+                           The CurEncoding property is now always in uppercase letters (the XML
+                           spec wants it to be treated case independently so when it's uppercase
+                           comparisons are faster)
+2002-03-04  HeySt  1.0.17  Included an IFDEF for Delphi 7 (VER150) and Kylix
+                           There is a new symbol HAS_CONTNRS_UNIT which is used now to
+                           distinguish between IDEs which come with the Contnrs unit and
+                           those that don't.
+*)
+
+UNIT libxmlparser;
+
+{$I jedi-sdl.inc}
+
+INTERFACE
+
+USES
+  SysUtils, Classes,
+  (*$IFDEF HAS_CONTNRS_UNIT *)  // The Contnrs Unit was introduced in Delphi 5
+  Contnrs,
+  (*$ENDIF*)
+  Math;
+
+CONST
+  CVersion = '1.0.17';  // This variable will be updated for every release
+                        // (I hope, I won't forget to do it everytime ...)
+
+TYPE
+  TPartType    = // --- Document Part Types
+                 (ptNone,            // Nothing
+                  ptXmlProlog,       // XML Prolog                  XmlSpec 2.8 / 4.3.1
+                  ptComment,         // Comment                     XmlSpec 2.5
+                  ptPI,              // Processing Instruction      XmlSpec 2.6
+                  ptDtdc,            // Document Type Declaration   XmlSpec 2.8
+                  ptStartTag,        // Start Tag                   XmlSpec 3.1
+                  ptEmptyTag,        // Empty-Element Tag           XmlSpec 3.1
+                  ptEndTag,          // End Tag                     XmlSpec 3.1
+                  ptContent,         // Text Content between Tags
+                  ptCData);          // CDATA Section               XmlSpec 2.7
+
+  TDtdElemType = // --- DTD Elements
+                 (deElement,         // !ELEMENT declaration
+                  deAttList,         // !ATTLIST declaration
+                  deEntity,          // !ENTITY declaration
+                  deNotation,        // !NOTATION declaration
+                  dePI,              // PI in DTD
+                  deComment,         // Comment in DTD
+                  deError);          // Error found in the DTD
+
+TYPE
+  TAttrList    = CLASS;
+  TEntityStack = CLASS;
+  TNvpList     = CLASS;
+  TElemDef     = CLASS;
+  TElemList    = CLASS;
+  TEntityDef   = CLASS;
+  TNotationDef = CLASS;
+
+  TDtdElementRec = RECORD    // --- This Record is returned by the DTD parser callback function
+                     Start, Final : PChar;                             // Start/End of the Element's Declaration
+                     CASE ElementType : TDtdElemType OF                // Type of the Element
+                       deElement,                                      // <!ELEMENT>
+                       deAttList  : (ElemDef      : TElemDef);         // <!ATTLIST>
+                       deEntity   : (EntityDef    : TEntityDef);       // <!ENTITY>
+                       deNotation : (NotationDef  : TNotationDef);     // <!NOTATION>
+                       dePI       : (Target       : PChar;             // <?PI ?>
+                                     Content      : PChar;
+                                     AttrList     : TAttrList);
+                       deError    : (Pos          : PChar);            // Error
+                       // deComment : ((No additional fields here));   // <!-- Comment -->
+                   END;
+
+  TXmlParser = CLASS                             // --- Internal Properties and Methods
+               PROTECTED
+                 FBuffer      : PChar;           // NIL if there is no buffer available
+                 FBufferSize  : INTEGER;         // 0 if the buffer is not owned by the Document instance
+                 FSource      : STRING;          // Name of Source of document. Filename for Documents loaded with LoadFromFile
+
+                 FXmlVersion  : STRING;          // XML version from Document header. Default is '1.0'
+                 FEncoding    : STRING;          // Encoding from Document header. Default is 'UTF-8'
+                 FStandalone  : BOOLEAN;         // Standalone declaration from Document header. Default is 'yes'
+                 FRootName    : STRING;          // Name of the Root Element (= DTD name)
+                 FDtdcFinal   : PChar;           // Pointer to the '>' character terminating the DTD declaration
+
+                 FNormalize   : BOOLEAN;         // If true: Pack Whitespace and don't return empty contents
+                 EntityStack  : TEntityStack;    // Entity Stack for Parameter and General Entities
+                 FCurEncoding : STRING;          // Current Encoding during parsing (always uppercase)
+
+                 PROCEDURE AnalyzeProlog;                                         // Analyze XML Prolog or Text Declaration
+                 PROCEDURE AnalyzeComment (Start : PChar; VAR Final : PChar);     // Analyze Comments
+                 PROCEDURE AnalyzePI      (Start : PChar; VAR Final : PChar);     // Analyze Processing Instructions (PI)
+                 PROCEDURE AnalyzeDtdc;                                           // Analyze Document Type Declaration
+                 PROCEDURE AnalyzeDtdElements (Start : PChar; VAR Final : PChar); // Analyze DTD declarations
+                 PROCEDURE AnalyzeTag;                                            // Analyze Start/End/Empty-Element Tags
+                 PROCEDURE AnalyzeCData;                                          // Analyze CDATA Sections
+                 PROCEDURE AnalyzeText (VAR IsDone : BOOLEAN);                    // Analyze Text Content between Tags
+                 PROCEDURE AnalyzeElementDecl  (Start : PChar; VAR Final : PChar);
+                 PROCEDURE AnalyzeAttListDecl  (Start : PChar; VAR Final : PChar);
+                 PROCEDURE AnalyzeEntityDecl   (Start : PChar; VAR Final : PChar);
+                 PROCEDURE AnalyzeNotationDecl (Start : PChar; VAR Final : PChar);
+
+                 PROCEDURE PushPE (VAR Start : PChar);
+                 PROCEDURE ReplaceCharacterEntities (VAR Str : STRING);
+                 PROCEDURE ReplaceParameterEntities (VAR Str : STRING);
+                 PROCEDURE ReplaceGeneralEntities   (VAR Str : STRING);
+
+                 FUNCTION GetDocBuffer : PChar;  // Returns FBuffer or a pointer to a NUL char if Buffer is empty
+
+               PUBLIC                         // --- Document Properties
+                 PROPERTY XmlVersion : STRING  READ FXmlVersion;                 // XML version from the Document Prolog
+                 PROPERTY Encoding   : STRING  READ FEncoding;                   // Document Encoding from Prolog
+                 PROPERTY Standalone : BOOLEAN READ FStandalone;                 // Standalone Declaration from Prolog
+                 PROPERTY RootName   : STRING  READ FRootName;                   // Name of the Root Element
+                 PROPERTY Normalize  : BOOLEAN READ FNormalize WRITE FNormalize; // True if Content is to be normalized
+                 PROPERTY Source     : STRING  READ FSource;                     // Name of Document Source (Filename)
+                 PROPERTY DocBuffer  : PChar   READ GetDocBuffer;                // Returns document buffer
+               PUBLIC                         // --- DTD Objects
+                 Elements    : TElemList;     // Elements: List of TElemDef (contains Attribute Definitions)
+                 Entities    : TNvpList;      // General Entities: List of TEntityDef
+                 ParEntities : TNvpList;      // Parameter Entities: List of TEntityDef
+                 Notations   : TNvpList;      // Notations: List of TNotationDef
+               PUBLIC
+                 CONSTRUCTOR Create;
+                 DESTRUCTOR Destroy;                                      OVERRIDE;
+
+                 // --- Document Handling
+                 FUNCTION  LoadFromFile   (Filename : STRING;
+                                           FileMode : INTEGER = fmOpenRead OR fmShareDenyNone) : BOOLEAN;
+                                                                          // Loads Document from given file
+                 FUNCTION  LoadFromBuffer (Buffer : PChar) : BOOLEAN;     // Loads Document from another buffer
+                 PROCEDURE SetBuffer      (Buffer : PChar);               // References another buffer
+                 PROCEDURE Clear;                                         // Clear Document
+
+               PUBLIC
+                 // --- Scanning through the document
+                 CurPartType : TPartType;                         // Current Type
+                 CurName     : STRING;                            // Current Name
+                 CurContent  : STRING;                            // Current Normalized Content
+                 CurStart    : PChar;                             // Current First character
+                 CurFinal    : PChar;                             // Current Last character
+                 CurAttr     : TAttrList;                         // Current Attribute List
+                 PROPERTY CurEncoding : STRING READ FCurEncoding; // Current Encoding
+                 PROCEDURE StartScan;
+                 FUNCTION  Scan : BOOLEAN;
+
+                 // --- Events / Callbacks
+                 FUNCTION  LoadExternalEntity (SystemId, PublicId,
+                                               Notation : STRING) : TXmlParser;     VIRTUAL;
+                 FUNCTION  TranslateEncoding  (CONST Source : STRING) : STRING;     VIRTUAL;
+                 PROCEDURE DtdElementFound (DtdElementRec : TDtdElementRec);        VIRTUAL;
+               END;
+
+  TValueType   = // --- Attribute Value Type
+                 (vtNormal,       // Normal specified Attribute
+                  vtImplied,      // #IMPLIED attribute value
+                  vtFixed,        // #FIXED attribute value
+                  vtDefault);     // Attribute value from default value in !ATTLIST declaration
+
+  TAttrDefault = // --- Attribute Default Type
+                 (adDefault,      // Normal default value
+                  adRequired,     // #REQUIRED attribute
+                  adImplied,      // #IMPLIED attribute
+                  adFixed);       // #FIXED attribute
+
+  TAttrType    = // --- Type of attribute
+                 (atUnknown,      // Unknown type
+                  atCData,        // Character data only
+                  atID,           // ID
+                  atIdRef,        // ID Reference
+                  atIdRefs,       // Several ID References, separated by Whitespace
+                  atEntity,       // Name of an unparsed Entity
+                  atEntities,     // Several unparsed Entity names, separated by Whitespace
+                  atNmToken,      // Name Token
+                  atNmTokens,     // Several Name Tokens, separated by Whitespace
+                  atNotation,     // A selection of Notation names (Unparsed Entity)
+                  atEnumeration); // Enumeration
+
+  TElemType    = // --- Element content type
+                 (etEmpty,        // Element is always empty
+                  etAny,          // Element can have any mixture of PCDATA and any elements
+                  etChildren,     // Element must contain only elements
+                  etMixed);       // Mixed PCDATA and elements
+
+  (*$IFDEF HAS_CONTNRS_UNIT *)
+  TObjectList = Contnrs.TObjectList;    // Re-Export this identifier
+  (*$ELSE *)
+  TObjectList = CLASS (TList)
+                  DESTRUCTOR Destroy; OVERRIDE;
+                  PROCEDURE Delete (Index : INTEGER);
+                  PROCEDURE Clear; OVERRIDE;
+                END;
+  (*$ENDIF *)
+
+  TNvpNode  = CLASS                     // Name-Value Pair Node
+                 Name  : STRING;
+                 Value : STRING;
+                 CONSTRUCTOR Create (TheName : STRING = ''; TheValue : STRING = '');
+              END;
+
+  TNvpList  = CLASS (TObjectList)       // Name-Value Pair List
+                PROCEDURE Add   (Node  : TNvpNode);
+                FUNCTION  Node  (Name  : STRING)  : TNvpNode;  OVERLOAD;
+                FUNCTION  Node  (Index : INTEGER) : TNvpNode;  OVERLOAD;
+                FUNCTION  Value (Name  : STRING)  : STRING;    OVERLOAD;
+                FUNCTION  Value (Index : INTEGER) : STRING;    OVERLOAD;
+                FUNCTION  Name  (Index : INTEGER) : STRING;
+              END;
+
+  TAttr     = CLASS (TNvpNode)          // Attribute of a Start-Tag or Empty-Element-Tag
+                 ValueType : TValueType;
+                 AttrType  : TAttrType;
+               END;
+
+  TAttrList = CLASS (TNvpList)          // List of Attributes
+                PROCEDURE Analyze (Start : PChar; VAR Final : PChar);
+              END;
+
+  TEntityStack = CLASS (TObjectList)    // Stack where current position is stored before parsing entities
+                 PROTECTED
+                   Owner : TXmlParser;
+                 PUBLIC
+                   CONSTRUCTOR Create (TheOwner : TXmlParser);
+                   PROCEDURE Push (LastPos : PChar);                      OVERLOAD;
+                   PROCEDURE Push (Instance : TObject; LastPos : PChar);  OVERLOAD;
+                   FUNCTION  Pop : PChar;         // Returns next char or NIL if EOF is reached. Frees Instance.
+                 END;
+
+  TAttrDef    = CLASS (TNvpNode)        // Represents a <!ATTLIST Definition. "Value" is the default value
+                  TypeDef     : STRING;           // Type definition from the DTD
+                  Notations   : STRING;           // Notation List, separated by pipe symbols '|'
+                  AttrType    : TAttrType;        // Attribute Type
+                  DefaultType : TAttrDefault;     // Default Type
+                END;
+
+  TElemDef    = CLASS (TNvpList)       // Represents a <!ELEMENT Definition. Is a list of TAttrDef-Nodes
+                  Name       : STRING;            // Element name
+                  ElemType   : TElemType;         // Element type
+                  Definition : STRING;            // Element definition from DTD
+                END;
+
+  TElemList   = CLASS (TObjectList)    // List of TElemDef nodes
+                  FUNCTION  Node (Name : STRING) : TElemDef;
+                  PROCEDURE Add (Node : TElemDef);
+                END;
+
+  TEntityDef  = CLASS (TNvpNode)       // Represents a <!ENTITY Definition.
+                  SystemId     : STRING;
+                  PublicId     : STRING;
+                  NotationName : STRING;
+                END;
+
+  TNotationDef = CLASS (TNvpNode)      // Represents a <!NOTATION Definition. Value is the System ID
+                   PublicId : STRING;
+                 END;
+
+  TCharset = SET OF CHAR;
+
+
+CONST
+  CWhitespace   = [#32, #9, #13, #10];                // Whitespace characters (XmlSpec 2.3)
+  CLetter       = [#$41..#$5A, #$61..#$7A, #$C0..#$D6, #$D8..#$F6, #$F8..#$FF];
+  CDigit        = [#$30..#$39];
+  CNameChar     = CLetter + CDigit + ['.', '-', '_', ':', #$B7];
+  CNameStart    = CLetter + ['_', ':'];
+  CQuoteChar    = ['"', ''''];
+  CPubidChar    = [#32, ^M, ^J, #9, 'a'..'z', 'A'..'Z', '0'..'9',
+                   '-', '''', '(', ')', '+', ',', '.', '/', ':',
+                   '=', '?', ';', '!', '*', '#', '@', '$', '_', '%'];
+
+  CDStart       = '<![CDATA[';
+  CDEnd         = ']]>';
+
+  // --- Name Constants for the above enumeration types
+  CPartType_Name : ARRAY [TPartType] OF STRING =
+                   ('', 'XML Prolog', 'Comment', 'PI',
+                    'DTD Declaration', 'Start Tag', 'Empty Tag', 'End Tag',
+                    'Text', 'CDATA');
+  CValueType_Name   : ARRAY [TValueType]    OF STRING = ('Normal', 'Implied', 'Fixed', 'Default');
+  CAttrDefault_Name : ARRAY [TAttrDefault]  OF STRING = ('Default', 'Required', 'Implied', 'Fixed');
+  CElemType_Name    : ARRAY [TElemType]     OF STRING = ('Empty', 'Any', 'Childs only', 'Mixed');
+  CAttrType_Name    : ARRAY [TAttrType]     OF STRING = ('Unknown', 'CDATA',
+                                                         'ID', 'IDREF', 'IDREFS',
+                                                         'ENTITY', 'ENTITIES',
+                                                         'NMTOKEN', 'NMTOKENS',
+                                                         'Notation', 'Enumeration');
+
+FUNCTION  ConvertWs   (Source: STRING; PackWs: BOOLEAN) : STRING;          // Convert WS to spaces #x20
+PROCEDURE SetStringSF (VAR S : STRING; BufferStart, BufferFinal : PChar);  // SetString by Start/Final of buffer
+FUNCTION  StrSFPas    (Start, Finish : PChar) : STRING;                    // Convert buffer part to Pascal string
+FUNCTION  TrimWs      (Source : STRING) : STRING;                          // Trim Whitespace
+
+FUNCTION  AnsiToUtf8  (Source : ANSISTRING) : STRING;                            // Convert Win-1252 to UTF-8
+FUNCTION  Utf8ToAnsi  (Source : STRING; UnknownChar : CHAR = 'ż') : ANSISTRING;  // Convert UTF-8 to Win-1252
+
+
+(*
+===============================================================================================
+TCustomXmlScanner event based component wrapper for TXmlParser
+===============================================================================================
+*)
+
+TYPE
+  TCustomXmlScanner = CLASS;
+  TXmlPrologEvent   = PROCEDURE (Sender : TObject; XmlVersion, Encoding: STRING; Standalone : BOOLEAN) OF OBJECT;
+  TCommentEvent     = PROCEDURE (Sender : TObject; Comment : STRING)                                   OF OBJECT;
+  TPIEvent          = PROCEDURE (Sender : TObject; Target, Content: STRING; Attributes : TAttrList)    OF OBJECT;
+  TDtdEvent         = PROCEDURE (Sender : TObject; RootElementName : STRING)                           OF OBJECT;
+  TStartTagEvent    = PROCEDURE (Sender : TObject; TagName : STRING; Attributes : TAttrList)           OF OBJECT;
+  TEndTagEvent      = PROCEDURE (Sender : TObject; TagName : STRING)                                   OF OBJECT;
+  TContentEvent     = PROCEDURE (Sender : TObject; Content : STRING)                                   OF OBJECT;
+  TElementEvent     = PROCEDURE (Sender : TObject; ElemDef : TElemDef)                                 OF OBJECT;
+  TEntityEvent      = PROCEDURE (Sender : TObject; EntityDef : TEntityDef)                             OF OBJECT;
+  TNotationEvent    = PROCEDURE (Sender : TObject; NotationDef : TNotationDef)                         OF OBJECT;
+  TErrorEvent       = PROCEDURE (Sender : TObject; ErrorPos : PChar)                                   OF OBJECT;
+  TExternalEvent    = PROCEDURE (Sender : TObject; SystemId, PublicId, NotationId : STRING;
+                                 VAR Result : TXmlParser)                                              OF OBJECT;
+  TEncodingEvent    = FUNCTION  (Sender : TObject; CurrentEncoding, Source : STRING) : STRING          OF OBJECT;
+
+
+  TCustomXmlScanner = CLASS (TComponent)
+    PROTECTED
+      FXmlParser           : TXmlParser;
+      FOnXmlProlog         : TXmlPrologEvent;
+      FOnComment           : TCommentEvent;
+      FOnPI                : TPIEvent;
+      FOnDtdRead           : TDtdEvent;
+      FOnStartTag          : TStartTagEvent;
+      FOnEmptyTag          : TStartTagEvent;
+      FOnEndTag            : TEndTagEvent;
+      FOnContent           : TContentEvent;
+      FOnCData             : TContentEvent;
+      FOnElement           : TElementEvent;
+      FOnAttList           : TElementEvent;
+      FOnEntity            : TEntityEvent;
+      FOnNotation          : TNotationEvent;
+      FOnDtdError          : TErrorEvent;
+      FOnLoadExternal      : TExternalEvent;
+      FOnTranslateEncoding : TEncodingEvent;
+      FStopParser          : BOOLEAN;
+      FUNCTION  GetNormalize : BOOLEAN;
+      PROCEDURE SetNormalize (Value : BOOLEAN);
+
+      PROCEDURE WhenXmlProlog(XmlVersion, Encoding: STRING; Standalone : BOOLEAN); VIRTUAL;
+      PROCEDURE WhenComment  (Comment : STRING);                                   VIRTUAL;
+      PROCEDURE WhenPI       (Target, Content: STRING; Attributes : TAttrList);    VIRTUAL;
+      PROCEDURE WhenDtdRead  (RootElementName : STRING);                           VIRTUAL;
+      PROCEDURE WhenStartTag (TagName : STRING; Attributes : TAttrList);           VIRTUAL;
+      PROCEDURE WhenEmptyTag (TagName : STRING; Attributes : TAttrList);           VIRTUAL;
+      PROCEDURE WhenEndTag   (TagName : STRING);                                   VIRTUAL;
+      PROCEDURE WhenContent  (Content : STRING);                                   VIRTUAL;
+      PROCEDURE WhenCData    (Content : STRING);                                   VIRTUAL;
+      PROCEDURE WhenElement  (ElemDef : TElemDef);                                 VIRTUAL;
+      PROCEDURE WhenAttList  (ElemDef : TElemDef);                                 VIRTUAL;
+      PROCEDURE WhenEntity   (EntityDef : TEntityDef);                             VIRTUAL;
+      PROCEDURE WhenNotation (NotationDef : TNotationDef);                         VIRTUAL;
+      PROCEDURE WhenDtdError (ErrorPos : PChar);                                   VIRTUAL;
+
+    PUBLIC
+      CONSTRUCTOR Create (AOwner: TComponent); OVERRIDE;
+      DESTRUCTOR Destroy;                      OVERRIDE;
+
+      PROCEDURE LoadFromFile   (Filename : TFilename);   // Load XML Document from file
+      PROCEDURE LoadFromBuffer (Buffer : PChar);         // Load XML Document from buffer
+      PROCEDURE SetBuffer      (Buffer : PChar);         // Refer to Buffer
+      FUNCTION  GetFilename : TFilename;
+
+      PROCEDURE Execute;                                 // Perform scanning
+
+    PROTECTED
+      PROPERTY XmlParser           : TXmlParser        READ FXmlParser;
+      PROPERTY StopParser          : BOOLEAN           READ FStopParser          WRITE FStopParser;
+      PROPERTY Filename            : TFilename         READ GetFilename          WRITE LoadFromFile;
+      PROPERTY Normalize           : BOOLEAN           READ GetNormalize         WRITE SetNormalize;
+      PROPERTY OnXmlProlog         : TXmlPrologEvent   READ FOnXmlProlog         WRITE FOnXmlProlog;
+      PROPERTY OnComment           : TCommentEvent     READ FOnComment           WRITE FOnComment;
+      PROPERTY OnPI                : TPIEvent          READ FOnPI                WRITE FOnPI;
+      PROPERTY OnDtdRead           : TDtdEvent         READ FOnDtdRead           WRITE FOnDtdRead;
+      PROPERTY OnStartTag          : TStartTagEvent    READ FOnStartTag          WRITE FOnStartTag;
+      PROPERTY OnEmptyTag          : TStartTagEvent    READ FOnEmptyTag          WRITE FOnEmptyTag;
+      PROPERTY OnEndTag            : TEndTagEvent      READ FOnEndTag            WRITE FOnEndTag;
+      PROPERTY OnContent           : TContentEvent     READ FOnContent           WRITE FOnContent;
+      PROPERTY OnCData             : TContentEvent     READ FOnCData             WRITE FOnCData;
+      PROPERTY OnElement           : TElementEvent     READ FOnElement           WRITE FOnElement;
+      PROPERTY OnAttList           : TElementEvent     READ FOnAttList           WRITE FOnAttList;
+      PROPERTY OnEntity            : TEntityEvent      READ FOnEntity            WRITE FOnEntity;
+      PROPERTY OnNotation          : TNotationEvent    READ FOnNotation          WRITE FOnNotation;
+      PROPERTY OnDtdError          : TErrorEvent       READ FOnDtdError          WRITE FOnDtdError;
+      PROPERTY OnLoadExternal      : TExternalEvent    READ FOnLoadExternal      WRITE FOnLoadExternal;
+      PROPERTY OnTranslateEncoding : TEncodingEvent    READ FOnTranslateEncoding WRITE FOnTranslateEncoding;
+    END;
+
+(*
+===============================================================================================
+IMPLEMENTATION
+===============================================================================================
+*)
+
+IMPLEMENTATION
+
+
+(*
+===============================================================================================
+Unicode and UTF-8 stuff
+===============================================================================================
+*)
+
+CONST
+  // --- Character Translation Table for Unicode <-> Win-1252
+  WIN1252_UNICODE : ARRAY [$00..$FF] OF WORD = (
+                    $0000, $0001, $0002, $0003, $0004, $0005, $0006, $0007, $0008, $0009,
+                    $000A, $000B, $000C, $000D, $000E, $000F, $0010, $0011, $0012, $0013,
+                    $0014, $0015, $0016, $0017, $0018, $0019, $001A, $001B, $001C, $001D,
+                    $001E, $001F, $0020, $0021, $0022, $0023, $0024, $0025, $0026, $0027,
+                    $0028, $0029, $002A, $002B, $002C, $002D, $002E, $002F, $0030, $0031,
+                    $0032, $0033, $0034, $0035, $0036, $0037, $0038, $0039, $003A, $003B,
+                    $003C, $003D, $003E, $003F, $0040, $0041, $0042, $0043, $0044, $0045,
+                    $0046, $0047, $0048, $0049, $004A, $004B, $004C, $004D, $004E, $004F,
+                    $0050, $0051, $0052, $0053, $0054, $0055, $0056, $0057, $0058, $0059,
+                    $005A, $005B, $005C, $005D, $005E, $005F, $0060, $0061, $0062, $0063,
+                    $0064, $0065, $0066, $0067, $0068, $0069, $006A, $006B, $006C, $006D,
+                    $006E, $006F, $0070, $0071, $0072, $0073, $0074, $0075, $0076, $0077,
+                    $0078, $0079, $007A, $007B, $007C, $007D, $007E, $007F,
+
+                    $20AC, $0081, $201A, $0192, $201E, $2026, $2020, $2021, $02C6, $2030,
+                    $0160, $2039, $0152, $008D, $017D, $008F, $0090, $2018, $2019, $201C,
+                    $201D, $2022, $2013, $2014, $02DC, $2122, $0161, $203A, $0153, $009D,
+                    $017E, $0178, $00A0, $00A1, $00A2, $00A3, $00A4, $00A5, $00A6, $00A7,
+                    $00A8, $00A9, $00AA, $00AB, $00AC, $00AD, $00AE, $00AF, $00B0, $00B1,
+                    $00B2, $00B3, $00B4, $00B5, $00B6, $00B7, $00B8, $00B9, $00BA, $00BB,
+                    $00BC, $00BD, $00BE, $00BF, $00C0, $00C1, $00C2, $00C3, $00C4, $00C5,
+                    $00C6, $00C7, $00C8, $00C9, $00CA, $00CB, $00CC, $00CD, $00CE, $00CF,
+                    $00D0, $00D1, $00D2, $00D3, $00D4, $00D5, $00D6, $00D7, $00D8, $00D9,
+                    $00DA, $00DB, $00DC, $00DD, $00DE, $00DF, $00E0, $00E1, $00E2, $00E3,
+                    $00E4, $00E5, $00E6, $00E7, $00E8, $00E9, $00EA, $00EB, $00EC, $00ED,
+                    $00EE, $00EF, $00F0, $00F1, $00F2, $00F3, $00F4, $00F5, $00F6, $00F7,
+                    $00F8, $00F9, $00FA, $00FB, $00FC, $00FD, $00FE, $00FF);
+
+(* UTF-8  (somewhat simplified)
+   -----
+   Character Range    Byte sequence
+   ---------------    --------------------------     (x=Bits from original character)
+   $0000..$007F       0xxxxxxx
+   $0080..$07FF       110xxxxx 10xxxxxx
+   $8000..$FFFF       1110xxxx 10xxxxxx 10xxxxxx
+
+   Example
+   --------
+   Transforming the Unicode character U+00E4 LATIN SMALL LETTER A WITH DIAERESIS  ("ä"):
+
+         ISO-8859-1,           Decimal  228
+         Win1252,              Hex      $E4
+         ANSI                  Bin      1110 0100
+                                        abcd efgh
+
+         UTF-8                 Binary   1100xxab 10cdefgh
+                               Binary   11000011 10100100
+                               Hex      $C3      $A4
+                               Decimal  195      164
+                               ANSI     Ă        ¤         *)
+
+
+FUNCTION  AnsiToUtf8 (Source : ANSISTRING) : STRING;
+          (* Converts the given Windows ANSI (Win1252) String to UTF-8. *)
+VAR
+  I   : INTEGER;  // Loop counter
+  U   : WORD;     // Current Unicode value
+  Len : INTEGER;  // Current real length of "Result" string
+BEGIN
+  SetLength (Result, Length (Source) * 3);   // Worst case
+  Len := 0;
+  FOR I := 1 TO Length (Source) DO BEGIN
+    U := WIN1252_UNICODE [ORD (Source [I])];
+    CASE U OF
+      $0000..$007F : BEGIN
+                       INC (Len);
+                       Result [Len] := CHR (U);
+                     END;
+      $0080..$07FF : BEGIN
+                       INC (Len);
+                       Result [Len] := CHR ($C0 OR (U SHR 6));
+                       INC (Len);
+                       Result [Len] := CHR ($80 OR (U AND $3F));
+                     END;
+      $0800..$FFFF : BEGIN
+                       INC (Len);
+                       Result [Len] := CHR ($E0 OR (U SHR 12));
+                       INC (Len);
+                       Result [Len] := CHR ($80 OR ((U SHR 6) AND $3F));
+                       INC (Len);
+                       Result [Len] := CHR ($80 OR (U AND $3F));
+                     END;
+      END;
+    END;
+  SetLength (Result, Len);
+END;
+
+
+FUNCTION  Utf8ToAnsi (Source : STRING; UnknownChar : CHAR = 'ż') : ANSISTRING;
+          (* Converts the given UTF-8 String to Windows ANSI (Win-1252).
+             If a character can not be converted, the "UnknownChar" is inserted. *)
+VAR
+  SourceLen : INTEGER;  // Length of Source string
+  I, K      : INTEGER;
+  A         : BYTE;     // Current ANSI character value
+  U         : WORD;
+  Ch        : CHAR;     // Dest char
+  Len       : INTEGER;  // Current real length of "Result" string
+BEGIN
+  SourceLen := Length (Source);
+  SetLength (Result, SourceLen);   // Enough room to live
+  Len := 0;
+  I   := 1;
+  WHILE I <= SourceLen DO BEGIN
+    A := ORD (Source [I]);
+    IF A < $80 THEN BEGIN                                               // Range $0000..$007F
+      INC (Len);
+      Result [Len] := Source [I];
+      INC (I);
+      END
+    ELSE BEGIN                                                          // Determine U, Inc I
+      IF (A AND $E0 = $C0) AND (I < SourceLen) THEN BEGIN               // Range $0080..$07FF
+        U := (WORD (A AND $1F) SHL 6) OR (ORD (Source [I+1]) AND $3F);
+        INC (I, 2);
+        END
+      ELSE IF (A AND $F0 = $E0) AND (I < SourceLen-1) THEN BEGIN        // Range $0800..$FFFF
+        U := (WORD (A AND $0F) SHL 12) OR
+             (WORD (ORD (Source [I+1]) AND $3F) SHL 6) OR
+             (      ORD (Source [I+2]) AND $3F);
+        INC (I, 3);
+        END
+      ELSE BEGIN                                                        // Unknown/unsupported
+        INC (I);
+        FOR K := 7 DOWNTO 0 DO
+          IF A AND (1 SHL K) = 0 THEN BEGIN
+            INC (I, (A SHR (K+1))-1);
+            BREAK;
+            END;
+        U := WIN1252_UNICODE [ORD (UnknownChar)];
+        END;
+      Ch := UnknownChar;                                                // Retrieve ANSI char
+      FOR A := $00 TO $FF DO
+        IF WIN1252_UNICODE [A] = U THEN BEGIN
+          Ch := CHR (A);
+          BREAK;
+          END;
+      INC (Len);
+      Result [Len] := Ch;
+      END;
+    END;
+  SetLength (Result, Len);
+END;
+
+
+(*
+===============================================================================================
+"Special" Helper Functions
+
+Don't ask me why. But including these functions makes the parser *DRAMATICALLY* faster
+on my K6-233 machine. You can test it yourself just by commenting them out.
+They do exactly the same as the Assembler routines defined in SysUtils.
+(This is where you can see how great the Delphi compiler really is. The compiled code is
+faster than hand-coded assembler!)
+===============================================================================================
+--> Just move this line below the StrScan function -->  *)
+
+
+FUNCTION StrPos (CONST Str, SearchStr : PChar) : PChar;
+         // Same functionality as SysUtils.StrPos
+VAR
+  First : CHAR;
+  Len   : INTEGER;
+BEGIN
+  First  := SearchStr^;
+  Len    := StrLen (SearchStr);
+  Result := Str;
+  REPEAT
+    IF Result^ = First THEN
+      IF StrLComp (Result, SearchStr, Len) = 0 THEN BREAK;
+    IF Result^ = #0 THEN BEGIN
+      Result := NIL;
+      BREAK;
+      END;
+    INC (Result);
+  UNTIL FALSE;
+END;
+
+
+FUNCTION StrScan (CONST Start : PChar; CONST Ch : CHAR) : PChar;
+         // Same functionality as SysUtils.StrScan
+BEGIN
+  Result := Start;
+  WHILE Result^ <> Ch DO BEGIN
+    IF Result^ = #0 THEN BEGIN
+      Result := NIL;
+      EXIT;
+      END;
+    INC (Result);
+    END;
+END;
+
+
+(*
+===============================================================================================
+Helper Functions
+===============================================================================================
+*)
+
+FUNCTION  DelChars (Source : STRING; CharsToDelete : TCharset) : STRING;
+          // Delete all "CharsToDelete" from the string
+VAR
+  I : INTEGER;
+BEGIN
+  Result := Source;
+  FOR I := Length (Result) DOWNTO 1 DO
+    IF Result [I] IN CharsToDelete THEN
+      Delete (Result, I, 1);
+END;
+
+
+FUNCTION  TrimWs (Source : STRING) : STRING;
+          // Trimms off Whitespace characters from both ends of the string
+VAR
+  I : INTEGER;
+BEGIN
+  // --- Trim Left
+  I := 1;
+  WHILE (I <= Length (Source)) AND (Source [I] IN CWhitespace) DO
+    INC (I);
+  Result := Copy (Source, I, MaxInt);
+
+  // --- Trim Right
+  I := Length (Result);
+  WHILE (I > 1) AND (Result [I] IN CWhitespace) DO
+    DEC (I);
+  Delete (Result, I+1, Length (Result)-I);
+END;
+
+
+FUNCTION  ConvertWs (Source: STRING; PackWs: BOOLEAN) : STRING;
+          // Converts all Whitespace characters to the Space #x20 character
+          // If "PackWs" is true, contiguous Whitespace characters are packed to one
+VAR
+  I : INTEGER;
+BEGIN
+  Result := Source;
+  FOR I := Length (Result) DOWNTO 1 DO
+    IF (Result [I] IN CWhitespace) THEN
+      IF PackWs AND (I > 1) AND (Result [I-1] IN CWhitespace)
+        THEN Delete (Result, I, 1)
+        ELSE Result [I] := #32;
+END;
+
+
+PROCEDURE SetStringSF (VAR S : STRING; BufferStart, BufferFinal : PChar);
+BEGIN
+  SetString (S, BufferStart, BufferFinal-BufferStart+1);
+END;
+
+
+FUNCTION  StrLPas  (Start : PChar; Len : INTEGER) : STRING;
+BEGIN
+  SetString (Result, Start, Len);
+END;
+
+
+FUNCTION  StrSFPas (Start, Finish : PChar) : STRING;
+BEGIN
+  SetString (Result, Start, Finish-Start+1);
+END;
+
+
+FUNCTION  StrScanE (CONST Source : PChar; CONST CharToScanFor : CHAR) : PChar;
+          // If "CharToScanFor" is not found, StrScanE returns the last char of the
+          // buffer instead of NIL
+BEGIN
+  Result := StrScan (Source, CharToScanFor);
+  IF Result = NIL THEN
+    Result := StrEnd (Source)-1;
+END;
+
+
+PROCEDURE ExtractName (Start : PChar; Terminators : TCharset; VAR Final : PChar);
+          (* Extracts the complete Name beginning at "Start".
+             It is assumed that the name is contained in Markup, so the '>' character is
+             always a Termination.
+             Start:       IN  Pointer to first char of name. Is always considered to be valid
+             Terminators: IN  Characters which terminate the name
+             Final:       OUT Pointer to last char of name *)
+BEGIN
+  Final := Start+1;
+  Include (Terminators, #0);
+  Include (Terminators, '>');
+  WHILE NOT (Final^ IN Terminators) DO
+    INC (Final);
+  DEC (Final);
+END;
+
+
+PROCEDURE ExtractQuote (Start : PChar; VAR Content : STRING; VAR Final : PChar);
+          (* Extract a string which is contained in single or double Quotes.
+             Start:    IN   Pointer to opening quote
+             Content:  OUT  The quoted string
+             Final:    OUT  Pointer to closing quote *)
+BEGIN
+  Final := StrScan (Start+1, Start^);
+  IF Final = NIL THEN BEGIN
+    Final := StrEnd (Start+1)-1;
+    SetString (Content, Start+1, Final-Start);
+    END
+  ELSE
+    SetString (Content, Start+1, Final-1-Start);
+END;
+
+
+(*
+===============================================================================================
+TEntityStackNode
+This Node is pushed to the "Entity Stack" whenever the parser parses entity replacement text.
+The "Instance" field holds the Instance pointer of an External Entity buffer. When it is
+popped, the Instance is freed.
+The "Encoding" field holds the name of the Encoding. External Parsed Entities may have
+another encoding as the document entity (XmlSpec 4.3.3). So when there is an "<?xml" PI
+found in the stream (= Text Declaration at the beginning of external parsed entities), the
+Encoding found there is used for the External Entity (is assigned to TXmlParser.CurEncoding)
+Default Encoding is for the Document Entity is UTF-8. It is assumed that External Entities
+have the same Encoding as the Document Entity, unless they carry a Text Declaration.
+===============================================================================================
+*)
+
+TYPE
+  TEntityStackNode = CLASS
+                       Instance : TObject;
+                       Encoding : STRING;
+                       LastPos  : PChar;
+                     END;
+
+(*
+===============================================================================================
+TEntityStack
+For nesting of Entities.
+When there is an entity reference found in the data stream, the corresponding entity
+definition is searched and the current position is pushed to this stack.
+From then on, the program scans the entitiy replacement text as if it were normal content.
+When the parser reaches the end of an entity, the current position is popped off the
+stack again.
+===============================================================================================
+*)
+
+CONSTRUCTOR TEntityStack.Create (TheOwner : TXmlParser);
+BEGIN
+  INHERITED Create;
+  Owner := TheOwner;
+END;
+
+
+PROCEDURE TEntityStack.Push (LastPos : PChar);
+BEGIN
+  Push (NIL, LastPos);
+END;
+
+
+PROCEDURE TEntityStack.Push (Instance : TObject; LastPos : PChar);
+VAR
+  ESN : TEntityStackNode;
+BEGIN
+  ESN := TEntityStackNode.Create;
+  ESN.Instance := Instance;
+  ESN.Encoding := Owner.FCurEncoding;  // Save current Encoding
+  ESN.LastPos  := LastPos;
+  Add (ESN);
+END;
+
+
+FUNCTION  TEntityStack.Pop : PChar;
+VAR
+  ESN : TEntityStackNode;
+BEGIN
+  IF Count > 0 THEN BEGIN
+    ESN := TEntityStackNode (Items [Count-1]);
+    Result := ESN.LastPos;
+    IF ESN.Instance <> NIL THEN
+      ESN.Instance.Free;
+    IF ESN.Encoding <> '' THEN
+      Owner.FCurEncoding := ESN.Encoding;   // Restore current Encoding
+    Delete (Count-1);
+    END
+  ELSE
+    Result := NIL;
+END;
+
+
+(*
+===============================================================================================
+TExternalID
+-----------
+XmlSpec 4.2.2:  ExternalID ::= 'SYSTEM' S SystemLiteral |
+                               'PUBLIC' S PubidLiteral S SystemLiteral
+XmlSpec 4.7:    PublicID   ::= 'PUBLIC' S PubidLiteral
+SystemLiteral and PubidLiteral are quoted
+===============================================================================================
+*)
+
+TYPE
+  TExternalID = CLASS
+                  PublicId : STRING;
+                  SystemId : STRING;
+                  Final    : PChar;
+                  CONSTRUCTOR Create (Start : PChar);
+                END;
+
+CONSTRUCTOR TExternalID.Create (Start : PChar);
+BEGIN
+  INHERITED Create;
+  Final := Start;
+  IF StrLComp (Start, 'SYSTEM', 6) = 0 THEN BEGIN
+    WHILE NOT (Final^ IN (CQuoteChar + [#0, '>', '['])) DO INC (Final);
+    IF NOT (Final^ IN CQuoteChar) THEN EXIT;
+    ExtractQuote (Final, SystemID, Final);
+    END
+  ELSE IF StrLComp (Start, 'PUBLIC', 6) = 0 THEN BEGIN
+    WHILE NOT (Final^ IN (CQuoteChar + [#0, '>', '['])) DO INC (Final);
+    IF NOT (Final^ IN CQuoteChar) THEN EXIT;
+    ExtractQuote (Final, PublicID, Final);
+    INC (Final);
+    WHILE NOT (Final^ IN (CQuoteChar + [#0, '>', '['])) DO INC (Final);
+    IF NOT (Final^ IN CQuoteChar) THEN EXIT;
+    ExtractQuote (Final, SystemID, Final);
+    END;
+END;
+
+
+(*
+===============================================================================================
+TXmlParser
+===============================================================================================
+*)
+
+CONSTRUCTOR TXmlParser.Create;
+BEGIN
+  INHERITED Create;
+  FBuffer     := NIL;
+  FBufferSize := 0;
+  Elements    := TElemList.Create;
+  Entities    := TNvpList.Create;
+  ParEntities := TNvpList.Create;
+  Notations   := TNvpList.Create;
+  CurAttr     := TAttrList.Create;
+  EntityStack := TEntityStack.Create (Self);
+  Clear;
+END;
+
+
+DESTRUCTOR TXmlParser.Destroy;
+BEGIN
+  Clear;
+  Elements.Free;
+  Entities.Free;
+  ParEntities.Free;
+  Notations.Free;
+  CurAttr.Free;
+  EntityStack.Free;
+  INHERITED Destroy;
+END;
+
+
+PROCEDURE TXmlParser.Clear;
+          // Free Buffer and clear all object attributes
+BEGIN
+  IF (FBufferSize > 0) AND (FBuffer <> NIL) THEN
+    FreeMem (FBuffer);
+  FBuffer     := NIL;
+  FBufferSize := 0;
+  FSource     := '';
+  FXmlVersion := '';
+  FEncoding   := '';
+  FStandalone := FALSE;
+  FRootName   := '';
+  FDtdcFinal  := NIL;
+  FNormalize  := TRUE;
+  Elements.Clear;
+  Entities.Clear;
+  ParEntities.Clear;
+  Notations.Clear;
+  CurAttr.Clear;
+  EntityStack.Clear;
+END;
+
+
+FUNCTION  TXmlParser.LoadFromFile (Filename : STRING; FileMode : INTEGER = fmOpenRead OR fmShareDenyNone) : BOOLEAN;
+          // Loads Document from given file
+          // Returns TRUE if successful
+VAR
+  f           : FILE;
+  ReadIn      : INTEGER;
+  OldFileMode : INTEGER;
+BEGIN
+  Result := FALSE;
+  Clear;
+
+  // --- Open File
+  OldFileMode := SYSTEM.FileMode;
+  TRY
+    SYSTEM.FileMode := FileMode;
+    TRY
+      AssignFile (f, Filename);
+      Reset (f, 1);
+    EXCEPT
+      EXIT;
+      END;
+
+    TRY
+      // --- Allocate Memory
+      TRY
+        FBufferSize := Filesize (f) + 1;
+        GetMem (FBuffer, FBufferSize);
+      EXCEPT
+        Clear;
+        EXIT;
+        END;
+
+      // --- Read File
+      TRY
+        BlockRead (f, FBuffer^, FBufferSize, ReadIn);
+        (FBuffer+ReadIn)^ := #0;  // NULL termination
+      EXCEPT
+        Clear;
+        EXIT;
+        END;
+    FINALLY
+      CloseFile (f);
+      END;
+
+    FSource := Filename;
+    Result  := TRUE;
+
+  FINALLY
+    SYSTEM.FileMode := OldFileMode;
+    END;
+END;
+
+
+FUNCTION  TXmlParser.LoadFromBuffer (Buffer : PChar) : BOOLEAN;
+          // Loads Document from another buffer
+          // Returns TRUE if successful
+          // The "Source" property becomes '<MEM>' if successful
+BEGIN
+  Result := FALSE;
+  Clear;
+  FBufferSize := StrLen (Buffer) + 1;
+  TRY
+    GetMem (FBuffer, FBufferSize);
+  EXCEPT
+    Clear;
+    EXIT;
+    END;
+  StrCopy (FBuffer, Buffer);
+  FSource := '<MEM>';
+  Result := TRUE;
+END;
+
+
+PROCEDURE TXmlParser.SetBuffer (Buffer : PChar);      // References another buffer
+BEGIN
+  Clear;
+  FBuffer     := Buffer;
+  FBufferSize := 0;
+  FSource := '<REFERENCE>';
+END;
+
+
+//-----------------------------------------------------------------------------------------------
+// Scanning through the document
+//-----------------------------------------------------------------------------------------------
+
+PROCEDURE TXmlParser.StartScan;
+BEGIN
+  CurPartType := ptNone;
+  CurName     := '';
+  CurContent  := '';
+  CurStart    := NIL;
+  CurFinal    := NIL;
+  CurAttr.Clear;
+  EntityStack.Clear;
+END;
+
+
+FUNCTION  TXmlParser.Scan : BOOLEAN;
+          // Scans the next Part
+          // Returns TRUE if a part could be found, FALSE if there is no part any more
+          //
+          // "IsDone" can be set to FALSE by AnalyzeText in order to go to the next part
+          // if there is no Content due to normalization
+VAR
+  IsDone : BOOLEAN;
+BEGIN
+  REPEAT
+    IsDone := TRUE;
+
+    // --- Start of next Part
+    IF CurStart = NIL
+      THEN CurStart := DocBuffer
+      ELSE CurStart := CurFinal+1;
+    CurFinal := CurStart;
+
+    // --- End of Document of Pop off a new part from the Entity stack?
+    IF CurStart^ = #0 THEN
+      CurStart := EntityStack.Pop;
+
+    // --- No Document or End Of Document: Terminate Scan
+    IF (CurStart = NIL) OR (CurStart^ = #0) THEN BEGIN
+      CurStart := StrEnd (DocBuffer);
+      CurFinal := CurStart-1;
+      EntityStack.Clear;
+      Result   := FALSE;
+      EXIT;
+      END;
+
+    IF (StrLComp (CurStart, '<?xml', 5) = 0) AND
+       ((CurStart+5)^ IN CWhitespace) THEN AnalyzeProlog                                      // XML Declaration, Text Declaration
+    ELSE IF StrLComp (CurStart, '<?',        2) = 0 THEN AnalyzePI (CurStart, CurFinal)       // PI
+    ELSE IF StrLComp (CurStart, '<!--',      4) = 0 THEN AnalyzeComment (CurStart, CurFinal)  // Comment
+    ELSE IF StrLComp (CurStart, '<!DOCTYPE', 9) = 0 THEN AnalyzeDtdc                          // DTDc
+    ELSE IF StrLComp (CurStart, CDStart, Length (CDStart)) = 0 THEN AnalyzeCdata              // CDATA Section
+    ELSE IF StrLComp (CurStart, '<',         1) = 0 THEN AnalyzeTag                           // Start-Tag, End-Tag, Empty-Element-Tag
+    ELSE AnalyzeText (IsDone);                                                                // Text Content
+  UNTIL IsDone;
+  Result := TRUE;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeProlog;
+          // Analyze XML Prolog or Text Declaration
+VAR
+  F : PChar;
+BEGIN
+  CurAttr.Analyze (CurStart+5, F);
+  IF EntityStack.Count = 0 THEN BEGIN
+    FXmlVersion := CurAttr.Value ('version');
+    FEncoding   := CurAttr.Value ('encoding');
+    FStandalone := CurAttr.Value ('standalone') = 'yes';
+    END;
+  CurFinal := StrPos (F, '?>');
+  IF CurFinal <> NIL
+    THEN INC (CurFinal)
+    ELSE CurFinal := StrEnd (CurStart)-1;
+  FCurEncoding := AnsiUpperCase (CurAttr.Value ('encoding'));
+  IF FCurEncoding = '' THEN
+    FCurEncoding := 'UTF-8';   // Default XML Encoding is UTF-8
+  CurPartType  := ptXmlProlog;
+  CurName      := '';
+  CurContent   := '';
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeComment (Start : PChar; VAR Final : PChar);
+          // Analyze Comments
+BEGIN
+  Final := StrPos (Start+4, '-->');
+  IF Final = NIL
+    THEN Final := StrEnd (Start)-1
+    ELSE INC (Final, 2);
+  CurPartType := ptComment;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzePI (Start : PChar; VAR Final : PChar);
+          // Analyze Processing Instructions (PI)
+          // This is also called for Character
+VAR
+  F : PChar;
+BEGIN
+  CurPartType := ptPI;
+  Final := StrPos (Start+2, '?>');
+  IF Final = NIL
+    THEN Final := StrEnd (Start)-1
+    ELSE INC (Final);
+  ExtractName (Start+2, CWhitespace + ['?', '>'], F);
+  SetStringSF (CurName, Start+2, F);
+  SetStringSF (CurContent, F+1, Final-2);
+  CurAttr.Analyze (F+1, F);
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeDtdc;
+          (* Analyze Document Type Declaration
+                 doctypedecl  ::= '<!DOCTYPE' S Name (S ExternalID)? S? ('[' (markupdecl | PEReference | S)* ']' S?)? '>'
+                 markupdecl   ::= elementdecl | AttlistDecl | EntityDecl | NotationDecl | PI | Comment
+                 PEReference  ::= '%' Name ';'
+
+                 elementdecl  ::= '<!ELEMENT' S Name S contentspec S?                    '>'
+                 AttlistDecl  ::= '<!ATTLIST' S Name AttDef* S?                          '>'
+                 EntityDecl   ::= '<!ENTITY' S Name S EntityDef S?                       '>' |
+                                  '<!ENTITY' S '%' S Name S PEDef S?                     '>'
+                 NotationDecl ::= '<!NOTATION' S Name S (ExternalID |  PublicID) S?      '>'
+                 PI           ::=  '<?' PITarget (S (Char* - (Char* '?>' Char* )))?     '?>'
+                 Comment      ::= '<!--' ((Char - '-') | ('-' (Char - '-')))*          '-->'  *)
+TYPE
+  TPhase = (phName, phDtd, phInternal, phFinishing);
+VAR
+  Phase       : TPhase;
+  F           : PChar;
+  ExternalID  : TExternalID;
+  ExternalDTD : TXmlParser;
+  DER         : TDtdElementRec;
+BEGIN
+  DER.Start := CurStart;
+  EntityStack.Clear;    // Clear stack for Parameter Entities
+  CurPartType := ptDtdc;
+
+  // --- Don't read DTDc twice
+  IF FDtdcFinal <> NIL THEN BEGIN
+    CurFinal := FDtdcFinal;
+    EXIT;
+    END;
+
+  // --- Scan DTDc
+  CurFinal := CurStart + 9;    // First char after '<!DOCTYPE'
+  Phase    := phName;
+  REPEAT
+    CASE CurFinal^ OF
+      '%' : BEGIN
+              PushPE (CurFinal);
+              CONTINUE;
+            END;
+      #0  : IF EntityStack.Count = 0 THEN
+              BREAK
+            ELSE BEGIN
+              CurFinal := EntityStack.Pop;
+              CONTINUE;
+              END;
+      '[' : BEGIN
+              Phase := phInternal;
+              AnalyzeDtdElements (CurFinal+1, CurFinal);
+              CONTINUE;
+            END;
+      ']' : Phase := phFinishing;
+      '>' : BREAK;
+      ELSE  IF NOT (CurFinal^ IN CWhitespace) THEN BEGIN
+              CASE Phase OF
+                phName : IF (CurFinal^ IN CNameStart)  THEN BEGIN
+                           ExtractName (CurFinal, CWhitespace + ['[', '>'], F);
+                           SetStringSF (FRootName, CurFinal, F);
+                           CurFinal := F;
+                           Phase := phDtd;
+                           END;
+                phDtd  : IF (StrLComp (CurFinal, 'SYSTEM', 6) = 0) OR
+                            (StrLComp (CurFinal, 'PUBLIC', 6) = 0) THEN BEGIN
+                           ExternalID  := TExternalID.Create (CurFinal);
+                           ExternalDTD := LoadExternalEntity (ExternalId.SystemId, ExternalID.PublicId, '');
+                           F := StrPos (ExternalDtd.DocBuffer, '<!');
+                           IF F <> NIL THEN
+                             AnalyzeDtdElements (F, F);
+                           ExternalDTD.Free;
+                           CurFinal := ExternalID.Final;
+                           ExternalID.Free;
+                           END;
+                ELSE     BEGIN
+                           DER.ElementType := deError;
+                           DER.Pos         := CurFinal;
+                           DER.Final       := CurFinal;
+                           DtdElementFound (DER);
+                         END;
+                END;
+
+              END;
+      END;
+    INC (CurFinal);
+  UNTIL FALSE;
+
+  CurPartType := ptDtdc;
+  CurName     := '';
+  CurContent  := '';
+
+  // It is an error in the document if "EntityStack" is not empty now
+  IF EntityStack.Count > 0 THEN BEGIN
+    DER.ElementType := deError;
+    DER.Final       := CurFinal;
+    DER.Pos         := CurFinal;
+    DtdElementFound (DER);
+    END;
+
+  EntityStack.Clear;    // Clear stack for General Entities
+  FDtdcFinal := CurFinal;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeDtdElements (Start : PChar; VAR Final : PChar);
+          // Analyze the "Elements" of a DTD contained in the external or
+          // internal DTD subset.
+VAR
+  DER : TDtdElementRec;
+BEGIN
+  Final := Start;
+  REPEAT
+    CASE Final^ OF
+      '%' : BEGIN
+              PushPE (Final);
+              CONTINUE;
+            END;
+      #0  : IF EntityStack.Count = 0 THEN
+              BREAK
+            ELSE BEGIN
+              CurFinal := EntityStack.Pop;
+              CONTINUE;
+              END;
+      ']',
+      '>' : BREAK;
+      '<' : IF      StrLComp (Final, '<!ELEMENT',   9) = 0 THEN AnalyzeElementDecl  (Final, Final)
+            ELSE IF StrLComp (Final, '<!ATTLIST',   9) = 0 THEN AnalyzeAttListDecl  (Final, Final)
+            ELSE IF StrLComp (Final, '<!ENTITY',    8) = 0 THEN AnalyzeEntityDecl   (Final, Final)
+            ELSE IF StrLComp (Final, '<!NOTATION', 10) = 0 THEN AnalyzeNotationDecl (Final, Final)
+            ELSE IF StrLComp (Final, '<?',          2) = 0 THEN BEGIN   // PI in DTD
+              DER.ElementType := dePI;
+              DER.Start       := Final;
+              AnalyzePI (Final, Final);
+              DER.Target      := PChar (CurName);
+              DER.Content     := PChar (CurContent);
+              DER.AttrList    := CurAttr;
+              DER.Final       := Final;
+              DtdElementFound (DER);
+              END
+            ELSE IF StrLComp (Final, '<!--', 4) = 0 THEN BEGIN   // Comment in DTD
+              DER.ElementType := deComment;
+              DER.Start       := Final;
+              AnalyzeComment  (Final, Final);
+              DER.Final       := Final;
+              DtdElementFound (DER);
+              END
+            ELSE BEGIN
+              DER.ElementType := deError;
+              DER.Start       := Final;
+              DER.Pos         := Final;
+              DER.Final       := Final;
+              DtdElementFound (DER);
+              END;
+
+      END;
+    INC (Final);
+  UNTIL FALSE;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeTag;
+          // Analyze Tags
+VAR
+  S, F    : PChar;
+  Attr    : TAttr;
+  ElemDef : TElemDef;
+  AttrDef : TAttrDef;
+  I       : INTEGER;
+BEGIN
+  CurPartType := ptStartTag;
+  S := CurStart+1;
+  IF S^ = '/' THEN BEGIN
+    CurPartType := ptEndTag;
+    INC (S);
+    END;
+  ExtractName (S, CWhitespace + ['/'], F);
+  SetStringSF (CurName, S, F);
+  CurAttr.Analyze (F+1, CurFinal);
+  IF CurFinal^ = '/' THEN BEGIN
+    CurPartType := ptEmptyTag;
+    END;
+  CurFinal := StrScanE (CurFinal, '>');
+
+  // --- Set Default Attribute values for nonexistent attributes
+  IF (CurPartType = ptStartTag) OR (CurPartType = ptEmptyTag) THEN BEGIN
+    ElemDef := Elements.Node (CurName);
+    IF ElemDef <> NIL THEN BEGIN
+      FOR I := 0 TO ElemDef.Count-1 DO BEGIN
+        AttrDef := TAttrDef (ElemDef [I]);
+        Attr := TAttr (CurAttr.Node (AttrDef.Name));
+        IF (Attr = NIL) AND (AttrDef.Value <> '') THEN BEGIN
+          Attr           := TAttr.Create (AttrDef.Name, AttrDef.Value);
+          Attr.ValueType := vtDefault;
+          CurAttr.Add (Attr);
+          END;
+        IF Attr <> NIL THEN BEGIN
+          CASE AttrDef.DefaultType OF
+            adDefault  : ;
+            adRequired : ; // -!- It is an error in the document if "Attr.Value" is an empty string
+            adImplied  : Attr.ValueType := vtImplied;
+            adFixed    : BEGIN
+                           Attr.ValueType := vtFixed;
+                           Attr.Value     := AttrDef.Value;
+                         END;
+            END;
+          Attr.AttrType := AttrDef.AttrType;
+          END;
+        END;
+      END;
+
+    // --- Normalize Attribute Values. XmlSpec:
+           // - a character reference is processed by appending the referenced character to the attribute value
+           // - an entity reference is processed by recursively processing the replacement text of the entity
+           // - a whitespace character (#x20, #xD, #xA, #x9) is processed by appending #x20 to the normalized value,
+           //   except that only a single #x20 is appended for a "#xD#xA" sequence that is part of an external
+           //   parsed entity or the literal entity value of an internal parsed entity
+           // - other characters are processed by appending them to the normalized value
+           // If the declared value is not CDATA, then the XML processor must further process the
+           // normalized attribute value by discarding any leading and trailing space (#x20) characters,
+           // and by replacing sequences of space (#x20) characters by a single space (#x20) character.
+           // All attributes for which no declaration has been read should be treated by a
+           // non-validating parser as if declared CDATA.
+           // !!! The XML 1.0 SE specification is somewhat different here
+           //     This code does not conform exactly to this specification
+    FOR I := 0 TO CurAttr.Count-1 DO
+      WITH TAttr (CurAttr [I]) DO BEGIN
+        ReplaceGeneralEntities   (Value);
+        ReplaceCharacterEntities (Value);
+        IF (AttrType <> atCData) AND (AttrType <> atUnknown)
+          THEN Value := TranslateEncoding (TrimWs (ConvertWs (Value, TRUE)))
+          ELSE Value := TranslateEncoding (ConvertWs (Value, FALSE));
+        END;
+    END;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeCData;
+          // Analyze CDATA Sections
+BEGIN
+  CurPartType := ptCData;
+  CurFinal := StrPos (CurStart, CDEnd);
+  IF CurFinal = NIL THEN BEGIN
+    CurFinal   := StrEnd (CurStart)-1;
+    CurContent := TranslateEncoding (StrPas (CurStart+Length (CDStart)));
+    END
+  ELSE BEGIN
+    SetStringSF (CurContent, CurStart+Length (CDStart), CurFinal-1);
+    INC (CurFinal, Length (CDEnd)-1);
+    CurContent := TranslateEncoding (CurContent);
+    END;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeText (VAR IsDone : BOOLEAN);
+          (* Analyzes Text Content between Tags. CurFinal will point to the last content character.
+             Content ends at a '<' character or at the end of the document.
+             Entity References and Character Entity references are resolved.
+             If PackSpaces is TRUE, contiguous Whitespace Characters will be compressed to
+             one Space #x20 character, Whitespace at the beginning and end of content will
+             be trimmed off and content which is or becomes empty is not returned to
+             the application (in this case, "IsDone" is set to FALSE which causes the
+             Scan method to proceed directly to the next part. *)
+
+  PROCEDURE ProcessEntity;
+            (* Is called if there is an ampsersand '&' character found in the document.
+               IN  "CurFinal" points to the ampersand
+               OUT "CurFinal" points to the first character after the semi-colon ';' *)
+  VAR
+    P              : PChar;
+    Name           : STRING;
+    EntityDef      : TEntityDef;
+    ExternalEntity : TXmlParser;
+  BEGIN
+    P := StrScan (CurFinal , ';');
+    IF P <> NIL THEN BEGIN
+      SetStringSF (Name, CurFinal+1, P-1);
+
+      // Is it a Character Entity?
+      IF (CurFinal+1)^ = '#' THEN BEGIN
+        IF UpCase ((CurFinal+2)^) = 'X'       // !!! Can't use "CHR" for Unicode characters > 255:
+          THEN CurContent := CurContent + CHR (StrToIntDef ('$'+Copy (Name, 3, MaxInt), 32))
+          ELSE CurContent := CurContent + CHR (StrToIntDef (Copy (Name, 2, MaxInt), 32));
+        CurFinal := P+1;
+        EXIT;
+        END
+
+      // Is it a Predefined Entity?
+      ELSE IF Name = 'lt'   THEN BEGIN CurContent := CurContent + '<';  CurFinal := P+1; EXIT; END
+      ELSE IF Name = 'gt'   THEN BEGIN CurContent := CurContent + '>';  CurFinal := P+1; EXIT; END
+      ELSE IF Name = 'amp'  THEN BEGIN CurContent := CurContent + '&';  CurFinal := P+1; EXIT; END
+      ELSE IF Name = 'apos' THEN BEGIN CurContent := CurContent + ''''; CurFinal := P+1; EXIT; END
+      ELSE IF Name = 'quot' THEN BEGIN CurContent := CurContent + '"';  CurFinal := P+1; EXIT; END;
+
+      // Replace with Entity from DTD
+      EntityDef := TEntityDef (Entities.Node (Name));
+      IF EntityDef <> NIL THEN BEGIN
+        IF EntityDef.Value <> '' THEN BEGIN
+          EntityStack.Push (P+1);
+          CurFinal := PChar (EntityDef.Value);
+          END
+        ELSE BEGIN
+          ExternalEntity := LoadExternalEntity (EntityDef.SystemId, EntityDef.PublicId, EntityDef.NotationName);
+          EntityStack.Push (ExternalEntity, P+1);
+          CurFinal := ExternalEntity.DocBuffer;
+          END;
+        END
+      ELSE BEGIN
+        CurContent := CurContent + Name;
+        CurFinal   := P+1;
+        END;
+      END
+    ELSE BEGIN
+      INC (CurFinal);
+      END;
+  END;
+
+VAR
+  C  : INTEGER;
+BEGIN
+  CurFinal    := CurStart;
+  CurPartType := ptContent;
+  CurContent  := '';
+  C           := 0;
+  REPEAT
+    CASE CurFinal^ OF
+      '&' : BEGIN
+              CurContent := CurContent + TranslateEncoding (StrLPas (CurFinal-C, C));
+              C := 0;
+              ProcessEntity;
+              CONTINUE;
+            END;
+      #0  : BEGIN
+              IF EntityStack.Count = 0 THEN
+                BREAK
+              ELSE BEGIN
+                CurContent := CurContent + TranslateEncoding (StrLPas (CurFinal-C, C));
+                C := 0;
+                CurFinal := EntityStack.Pop;
+                CONTINUE;
+                END;
+            END;
+      '<' : BREAK;
+      ELSE INC (C);
+      END;
+    INC (CurFinal);
+  UNTIL FALSE;
+  CurContent := CurContent + TranslateEncoding (StrLPas (CurFinal-C, C));
+  DEC (CurFinal);
+
+  IF FNormalize THEN BEGIN
+    CurContent := ConvertWs (TrimWs (CurContent), TRUE);
+    IsDone     := CurContent <> '';    // IsDone will only get FALSE if PackSpaces is TRUE
+    END;
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeElementDecl  (Start : PChar; VAR Final : PChar);
+          (* Parse <!ELEMENT declaration starting at "Start"
+             Final must point to the terminating '>' character
+             XmlSpec 3.2:
+                 elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
+                 contentspec ::= 'EMPTY' | 'ANY' | Mixed | children
+                 Mixed       ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*'   |
+                                 '(' S? '#PCDATA' S? ')'
+                 children    ::= (choice | seq) ('?' | '*' | '+')?
+                 choice      ::= '(' S? cp ( S? '|' S? cp )* S? ')'
+                 cp          ::= (Name | choice | seq) ('?' | '*' | '+')?
+                 seq         ::= '(' S? cp ( S? ',' S? cp )* S? ')'
+
+             More simply:
+                 contentspec ::= EMPTY
+                                 ANY
+                                 '(#PCDATA)'
+                                 '(#PCDATA | A | B)*'
+                                 '(A, B, C)'
+                                 '(A | B | C)'
+                                 '(A?, B*, C+),
+                                 '(A, (B | C | D)* )'                       *)
+VAR
+  Element : TElemDef;
+  Elem2   : TElemDef;
+  F       : PChar;
+  DER     : TDtdElementRec;
+BEGIN
+  Element   := TElemDef.Create;
+  Final     := Start + 9;
+  DER.Start := Start;
+  REPEAT
+    IF Final^ = '>' THEN BREAK;
+    IF (Final^ IN CNameStart) AND (Element.Name = '') THEN BEGIN
+      ExtractName (Final, CWhitespace, F);
+      SetStringSF (Element.Name, Final, F);
+      Final := F;
+      F := StrScan (Final+1, '>');
+      IF F = NIL THEN BEGIN
+        Element.Definition := STRING (Final);
+        Final := StrEnd (Final);
+        BREAK;
+        END
+      ELSE BEGIN
+        SetStringSF (Element.Definition, Final+1, F-1);
+        Final := F;
+        BREAK;
+        END;
+      END;
+    INC (Final);
+  UNTIL FALSE;
+  Element.Definition := DelChars (Element.Definition, CWhitespace);
+  ReplaceParameterEntities (Element.Definition);
+  IF      Element.Definition = 'EMPTY' THEN Element.ElemType := etEmpty
+  ELSE IF Element.Definition = 'ANY'   THEN Element.ElemType := etAny
+  ELSE IF Copy (Element.Definition, 1, 8) = '(#PCDATA' THEN Element.ElemType := etMixed
+  ELSE IF Copy (Element.Definition, 1, 1) = '('        THEN Element.ElemType := etChildren
+  ELSE Element.ElemType := etAny;
+
+  Elem2 := Elements.Node (Element.Name);
+  IF Elem2 <> NIL THEN
+    Elements.Delete (Elements.IndexOf (Elem2));
+  Elements.Add (Element);
+  Final := StrScanE (Final, '>');
+  DER.ElementType := deElement;
+  DER.ElemDef  := Element;
+  DER.Final    := Final;
+  DtdElementFound (DER);
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeAttListDecl  (Start : PChar; VAR Final : PChar);
+          (* Parse <!ATTLIST declaration starting at "Start"
+             Final must point to the terminating '>' character
+             XmlSpec 3.3:
+                 AttlistDecl    ::= '<!ATTLIST' S Name AttDef* S? '>'
+                 AttDef         ::= S Name S AttType S DefaultDecl
+                 AttType        ::= StringType | TokenizedType | EnumeratedType
+                 StringType     ::= 'CDATA'
+                 TokenizedType  ::= 'ID' | 'IDREF' | 'IDREFS' | 'ENTITY' | 'ENTITIES' | 'NMTOKEN' | 'NMTOKENS'
+                 EnumeratedType ::= NotationType | Enumeration
+                 NotationType   ::= 'NOTATION' S '(' S? Name (S? '|' S? Name)* S? ')'
+                 Enumeration    ::= '(' S? Nmtoken (S? '|' S? Nmtoken)* S? ')'
+                 DefaultDecl    ::= '#REQUIRED' | '#IMPLIED' | (('#FIXED' S)? AttValue)
+                 AttValue       ::= '"' ([^<&"] | Reference)* '"' | "'" ([^<&'] | Reference)* "'"
+            Examples:
+                 <!ATTLIST address
+                           A1 CDATA "Default"
+                           A2 ID    #REQUIRED
+                           A3 IDREF #IMPLIED
+                           A4 IDREFS #IMPLIED
+                           A5 ENTITY #FIXED "&at;&#252;"
+                           A6 ENTITIES #REQUIRED
+                           A7 NOTATION (WMF | DXF) "WMF"
+                           A8 (A | B | C) #REQUIRED>                *)
+TYPE
+  TPhase = (phElementName, phName, phType, phNotationContent, phDefault);
+VAR
+  Phase       : TPhase;
+  F           : PChar;
+  ElementName : STRING;
+  ElemDef     : TElemDef;
+  AttrDef     : TAttrDef;
+  AttrDef2    : TAttrDef;
+  Strg        : STRING;
+  DER         : TDtdElementRec;
+BEGIN
+  Final     := Start + 9;   // The character after <!ATTLIST
+  Phase     := phElementName;
+  DER.Start := Start;
+  AttrDef   := NIL;
+  ElemDef   := NIL;
+  REPEAT
+    IF NOT (Final^ IN CWhitespace) THEN
+      CASE Final^ OF
+        '%' : BEGIN
+                PushPE (Final);
+                CONTINUE;
+              END;
+        #0  : IF EntityStack.Count = 0 THEN
+                BREAK
+              ELSE BEGIN
+                Final := EntityStack.Pop;
+                CONTINUE;
+                END;
+        '>' : BREAK;
+        ELSE  CASE Phase OF
+                phElementName     : BEGIN
+                                      ExtractName (Final, CWhitespace + CQuoteChar + ['#'], F);
+                                      SetStringSF (ElementName, Final, F);
+                                      Final := F;
+                                      ElemDef := Elements.Node (ElementName);
+                                      IF ElemDef = NIL THEN BEGIN
+                                        ElemDef := TElemDef.Create;
+                                        ElemDef.Name       := ElementName;
+                                        ElemDef.Definition := 'ANY';
+                                        ElemDef.ElemType   := etAny;
+                                        Elements.Add (ElemDef);
+                                        END;
+                                      Phase := phName;
+                                    END;
+                phName            : BEGIN
+                                      AttrDef := TAttrDef.Create;
+                                      ExtractName (Final, CWhitespace + CQuoteChar + ['#'], F);
+                                      SetStringSF (AttrDef.Name, Final, F);
+                                      Final := F;
+                                      AttrDef2 := TAttrDef (ElemDef.Node (AttrDef.Name));
+                                      IF AttrDef2 <> NIL THEN
+                                        ElemDef.Delete (ElemDef.IndexOf (AttrDef2));
+                                      ElemDef.Add (AttrDef);
+                                      Phase := phType;
+                                    END;
+                phType            : BEGIN
+                                      IF Final^ = '(' THEN BEGIN
+                                        F := StrScan (Final+1, ')');
+                                        IF F <> NIL
+                                          THEN SetStringSF (AttrDef.TypeDef, Final+1, F-1)
+                                          ELSE AttrDef.TypeDef := STRING (Final+1);
+                                        AttrDef.TypeDef := DelChars (AttrDef.TypeDef, CWhitespace);
+                                        AttrDef.AttrType := atEnumeration;
+                                        ReplaceParameterEntities (AttrDef.TypeDef);
+                                        ReplaceCharacterEntities (AttrDef.TypeDef);
+                                        Phase := phDefault;
+                                        END
+                                      ELSE IF StrLComp (Final, 'NOTATION', 8) = 0 THEN BEGIN
+                                        INC (Final, 8);
+                                        AttrDef.AttrType := atNotation;
+                                        Phase := phNotationContent;
+                                        END
+                                      ELSE BEGIN
+                                        ExtractName (Final, CWhitespace+CQuoteChar+['#'], F);
+                                        SetStringSF (AttrDef.TypeDef, Final, F);
+                                        IF      AttrDef.TypeDef = 'CDATA'    THEN AttrDef.AttrType := atCData
+                                        ELSE IF AttrDef.TypeDef = 'ID'       THEN AttrDef.AttrType := atId
+                                        ELSE IF AttrDef.TypeDef = 'IDREF'    THEN AttrDef.AttrType := atIdRef
+                                        ELSE IF AttrDef.TypeDef = 'IDREFS'   THEN AttrDef.AttrType := atIdRefs
+                                        ELSE IF AttrDef.TypeDef = 'ENTITY'   THEN AttrDef.AttrType := atEntity
+                                        ELSE IF AttrDef.TypeDef = 'ENTITIES' THEN AttrDef.AttrType := atEntities
+                                        ELSE IF AttrDef.TypeDef = 'NMTOKEN'  THEN AttrDef.AttrType := atNmToken
+                                        ELSE IF AttrDef.TypeDef = 'NMTOKENS' THEN AttrDef.AttrType := atNmTokens;
+                                        Phase := phDefault;
+                                        END
+                                    END;
+                phNotationContent : BEGIN
+                                      F := StrScan (Final, ')');
+                                      IF F <> NIL THEN
+                                        SetStringSF (AttrDef.Notations, Final+1, F-1)
+                                      ELSE BEGIN
+                                        AttrDef.Notations := STRING (Final+1);
+                                        Final := StrEnd (Final);
+                                        END;
+                                      ReplaceParameterEntities (AttrDef.Notations);
+                                      AttrDef.Notations := DelChars (AttrDef.Notations, CWhitespace);
+                                      Phase := phDefault;
+                                    END;
+                phDefault :         BEGIN
+                                      IF Final^ = '#' THEN BEGIN
+                                        ExtractName (Final, CWhiteSpace + CQuoteChar, F);
+                                        SetStringSF (Strg, Final, F);
+                                        Final := F;
+                                        ReplaceParameterEntities (Strg);
+                                        IF      Strg = '#REQUIRED' THEN BEGIN AttrDef.DefaultType := adRequired; Phase := phName; END
+                                        ELSE IF Strg = '#IMPLIED'  THEN BEGIN AttrDef.DefaultType := adImplied;  Phase := phName; END
+                                        ELSE IF Strg = '#FIXED'    THEN       AttrDef.DefaultType := adFixed;
+                                        END
+                                      ELSE IF (Final^ IN CQuoteChar) THEN BEGIN
+                                        ExtractQuote (Final, AttrDef.Value, Final);
+                                        ReplaceParameterEntities (AttrDef.Value);
+                                        ReplaceCharacterEntities (AttrDef.Value);
+                                        Phase := phName;
+                                        END;
+                                      IF Phase = phName THEN BEGIN
+                                        AttrDef := NIL;
+                                        END;
+                                    END;
+
+                END;
+        END;
+    INC (Final);
+  UNTIL FALSE;
+
+  Final := StrScan (Final, '>');
+
+  DER.ElementType := deAttList;
+  DER.ElemDef  := ElemDef;
+  DER.Final    := Final;
+  DtdElementFound (DER);
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeEntityDecl   (Start : PChar; VAR Final : PChar);
+          (* Parse <!ENTITY declaration starting at "Start"
+             Final must point to the terminating '>' character
+             XmlSpec 4.2:
+                 EntityDecl  ::= '<!ENTITY' S Name S EntityDef S? '>'   |
+                                 '<!ENTITY' S '%' S Name S PEDef S? '>'
+                 EntityDef   ::= EntityValue | (ExternalID NDataDecl?)
+                 PEDef       ::= EntityValue | ExternalID
+                 NDataDecl   ::= S 'NDATA' S Name
+                 EntityValue ::= '"' ([^%&"] | PEReference | EntityRef | CharRef)* '"'   |
+                                 "'" ([^%&'] | PEReference | EntityRef | CharRef)* "'"
+                 PEReference ::= '%' Name ';'
+
+             Examples
+                 <!ENTITY test1 "Stefan Heymann">                   <!-- Internal, general, parsed              -->
+                 <!ENTITY test2 SYSTEM "ent2.xml">                  <!-- External, general, parsed              -->
+                 <!ENTITY test2 SYSTEM "ent3.gif" NDATA gif>        <!-- External, general, unparsed            -->
+                 <!ENTITY % test3 "<!ELEMENT q ANY>">               <!-- Internal, parameter                    -->
+                 <!ENTITY % test6 SYSTEM "ent6.xml">                <!-- External, parameter                    -->
+                 <!ENTITY test4 "&test1; ist lieb">                 <!-- IGP, Replacement text <> literal value -->
+                 <!ENTITY test5 "<p>Dies ist ein Test-Absatz</p>">  <!-- IGP, See XmlSpec 2.4                   -->
+          *)
+TYPE
+  TPhase = (phName, phContent, phNData, phNotationName, phFinalGT);
+VAR
+  Phase         : TPhase;
+  IsParamEntity : BOOLEAN;
+  F             : PChar;
+  ExternalID    : TExternalID;
+  EntityDef     : TEntityDef;
+  EntityDef2    : TEntityDef;
+  DER           : TDtdElementRec;
+BEGIN
+  Final         := Start + 8;   // First char after <!ENTITY
+  DER.Start     := Start;
+  Phase         := phName;
+  IsParamEntity := FALSE;
+  EntityDef     := TEntityDef.Create;
+  REPEAT
+    IF NOT (Final^ IN CWhitespace) THEN
+      CASE Final^ OF
+        '%' : IsParamEntity := TRUE;
+        '>' : BREAK;
+        ELSE  CASE Phase OF
+                phName         : IF Final^ IN CNameStart THEN BEGIN
+                                   ExtractName (Final, CWhitespace + CQuoteChar, F);
+                                   SetStringSF (EntityDef.Name, Final, F);
+                                   Final := F;
+                                   Phase := phContent;
+                                   END;
+                phContent      : IF Final^ IN CQuoteChar THEN BEGIN
+                                   ExtractQuote (Final, EntityDef.Value, Final);
+                                   Phase := phFinalGT;
+                                   END
+                                 ELSE IF (StrLComp (Final, 'SYSTEM', 6) = 0) OR
+                                         (StrLComp (Final, 'PUBLIC', 6) = 0) THEN BEGIN
+                                   ExternalID := TExternalID.Create (Final);
+                                   EntityDef.SystemId := ExternalID.SystemId;
+                                   EntityDef.PublicId := ExternalID.PublicId;
+                                   Final      := ExternalID.Final;
+                                   Phase      := phNData;
+                                   ExternalID.Free;
+                                   END;
+                phNData        : IF StrLComp (Final, 'NDATA', 5) = 0 THEN BEGIN
+                                   INC (Final, 4);
+                                   Phase := phNotationName;
+                                   END;
+                phNotationName : IF Final^ IN CNameStart THEN BEGIN
+                                   ExtractName (Final, CWhitespace + ['>'], F);
+                                   SetStringSF (EntityDef.NotationName, Final, F);
+                                   Final := F;
+                                   Phase := phFinalGT;
+                                   END;
+                phFinalGT      : ; // -!- There is an error in the document if this branch is called
+                END;
+        END;
+    INC (Final);
+  UNTIL FALSE;
+  IF IsParamEntity THEN BEGIN
+    EntityDef2 := TEntityDef (ParEntities.Node (EntityDef.Name));
+    IF EntityDef2 <> NIL THEN
+      ParEntities.Delete (ParEntities.IndexOf (EntityDef2));
+    ParEntities.Add (EntityDef);
+    ReplaceCharacterEntities (EntityDef.Value);
+    END
+  ELSE BEGIN
+    EntityDef2 := TEntityDef (Entities.Node (EntityDef.Name));
+    IF EntityDef2 <> NIL THEN
+      Entities.Delete (Entities.IndexOf (EntityDef2));
+    Entities.Add (EntityDef);
+    ReplaceParameterEntities (EntityDef.Value);  //  Create replacement texts (see XmlSpec 4.5)
+    ReplaceCharacterEntities (EntityDef.Value);
+    END;
+  Final := StrScanE (Final, '>');
+
+  DER.ElementType := deEntity;
+  DER.EntityDef   := EntityDef;
+  DER.Final       := Final;
+  DtdElementFound (DER);
+END;
+
+
+PROCEDURE TXmlParser.AnalyzeNotationDecl (Start : PChar; VAR Final : PChar);
+          // Parse <!NOTATION declaration starting at "Start"
+          // Final must point to the terminating '>' character
+          // XmlSpec 4.7: NotationDecl ::=  '<!NOTATION' S Name S (ExternalID |  PublicID) S? '>'
+TYPE
+  TPhase = (phName, phExtId, phEnd);
+VAR
+  ExternalID  : TExternalID;
+  Phase       : TPhase;
+  F           : PChar;
+  NotationDef : TNotationDef;
+  DER         : TDtdElementRec;
+BEGIN
+  Final       := Start + 10;   // Character after <!NOTATION
+  DER.Start   := Start;
+  Phase       := phName;
+  NotationDef := TNotationDef.Create;
+  REPEAT
+    IF NOT (Final^ IN CWhitespace) THEN
+      CASE Final^ OF
+        '>',
+        #0   : BREAK;
+        ELSE   CASE Phase OF
+                 phName  : BEGIN
+                             ExtractName (Final, CWhitespace + ['>'], F);
+                             SetStringSF (NotationDef.Name, Final, F);
+                             Final := F;
+                             Phase := phExtId;
+                           END;
+                 phExtId : BEGIN
+                             ExternalID := TExternalID.Create (Final);
+                             NotationDef.Value    := ExternalID.SystemId;
+                             NotationDef.PublicId := ExternalID.PublicId;
+                             Final := ExternalId.Final;
+                             ExternalId.Free;
+                             Phase := phEnd;
+                           END;
+                 phEnd   : ;   // -!- There is an error in the document if this branch is called
+                 END;
+        END;
+    INC (Final);
+  UNTIL FALSE;
+  Notations.Add (NotationDef);
+  Final := StrScanE (Final, '>');
+
+  DER.ElementType := deNotation;
+  DER.NotationDef := NotationDef;
+  DER.Final       := Final;
+  DtdElementFound (DER);
+END;
+
+
+PROCEDURE TXmlParser.PushPE (VAR Start : PChar);
+          (* If there is a parameter entity reference found in the data stream,
+             the current position will be pushed to the entity stack.
+             Start:  IN  Pointer to the '%' character starting the PE reference
+                     OUT Pointer to first character of PE replacement text *)
+VAR
+  P         : PChar;
+  EntityDef : TEntityDef;
+BEGIN
+  P := StrScan (Start, ';');
+  IF P <> NIL THEN BEGIN
+    EntityDef := TEntityDef (ParEntities.Node (StrSFPas (Start+1, P-1)));
+    IF EntityDef <> NIL THEN BEGIN
+      EntityStack.Push (P+1);
+      Start := PChar (EntityDef.Value);
+      END
+    ELSE
+      Start := P+1;
+    END;
+END;
+
+
+PROCEDURE TXmlParser.ReplaceCharacterEntities (VAR Str : STRING);
+          // Replaces all Character Entity References in the String
+VAR
+  Start  : INTEGER;
+  PAmp   : PChar;
+  PSemi  : PChar;
+  PosAmp : INTEGER;
+  Len    : INTEGER;    // Length of Entity Reference
+BEGIN
+  IF Str = '' THEN EXIT;
+  Start := 1;
+  REPEAT
+    PAmp := StrPos (PChar (Str) + Start-1, '&#');
+    IF PAmp = NIL THEN BREAK;
+    PSemi := StrScan (PAmp+2, ';');
+    IF PSemi = NIL THEN BREAK;
+    PosAmp := PAmp - PChar (Str) + 1;
+    Len    := PSemi-PAmp+1;
+    IF CompareText (Str [PosAmp+2], 'x') = 0          // !!! Can't use "CHR" for Unicode characters > 255
+      THEN Str [PosAmp] := CHR (StrToIntDef ('$'+Copy (Str, PosAmp+3, Len-4), 0))
+      ELSE Str [PosAmp] := CHR (StrToIntDef (Copy (Str, PosAmp+2, Len-3), 32));
+    Delete (Str, PosAmp+1, Len-1);  
+    Start := PosAmp + 1;
+  UNTIL FALSE;
+END;
+
+
+PROCEDURE TXmlParser.ReplaceParameterEntities (VAR Str : STRING);
+          // Recursively replaces all Parameter Entity References in the String
+  PROCEDURE ReplaceEntities (VAR Str : STRING);
+  VAR
+    Start   : INTEGER;
+    PAmp    : PChar;
+    PSemi   : PChar;
+    PosAmp  : INTEGER;
+    Len     : INTEGER;
+    Entity  : TEntityDef;
+    Repl    : STRING;        // Replacement
+  BEGIN
+    IF Str = '' THEN EXIT;
+    Start := 1;
+    REPEAT
+      PAmp := StrPos (PChar (Str)+Start-1, '%');
+      IF PAmp = NIL THEN BREAK;
+      PSemi := StrScan (PAmp+2, ';');
+      IF PSemi = NIL THEN BREAK;
+      PosAmp := PAmp - PChar (Str) + 1;
+      Len    := PSemi-PAmp+1;
+      Entity := TEntityDef (ParEntities.Node (Copy (Str, PosAmp+1, Len-2)));
+      IF Entity <> NIL THEN BEGIN
+        Repl := Entity.Value;
+        ReplaceEntities (Repl);    // Recursion
+        END
+      ELSE
+        Repl := Copy (Str, PosAmp, Len);
+      Delete (Str, PosAmp, Len);  
+      Insert (Repl, Str, PosAmp);
+      Start := PosAmp + Length (Repl);
+    UNTIL FALSE;
+  END;
+BEGIN
+  ReplaceEntities (Str);
+END;
+
+
+PROCEDURE TXmlParser.ReplaceGeneralEntities (VAR Str : STRING);
+          // Recursively replaces General Entity References in the String
+  PROCEDURE ReplaceEntities (VAR Str : STRING);
+  VAR
+    Start          : INTEGER;
+    PAmp           : PChar;
+    PSemi          : PChar;
+    PosAmp         : INTEGER;
+    Len            : INTEGER;
+    EntityDef      : TEntityDef;
+    EntName        : STRING;
+    Repl           : STRING;        // Replacement
+    ExternalEntity : TXmlParser;
+  BEGIN
+    IF Str = '' THEN EXIT;
+    Start := 1;
+    REPEAT
+      PAmp := StrPos (PChar (Str)+Start-1, '&');
+      IF PAmp = NIL THEN BREAK;
+      PSemi := StrScan (PAmp+2, ';');
+      IF PSemi = NIL THEN BREAK;
+      PosAmp := PAmp - PChar (Str) + 1;
+      Len    := PSemi-PAmp+1;
+      EntName := Copy (Str, PosAmp+1, Len-2);
+      IF      EntName = 'lt'   THEN Repl := '<'
+      ELSE IF EntName = 'gt'   THEN Repl := '>'
+      ELSE IF EntName = 'amp'  THEN Repl := '&'
+      ELSE IF EntName = 'apos' THEN Repl := ''''
+      ELSE IF EntName = 'quot' THEN Repl := '"'
+      ELSE BEGIN
+        EntityDef := TEntityDef (Entities.Node (EntName));
+        IF EntityDef <> NIL THEN BEGIN
+          IF EntityDef.Value <> '' THEN   // Internal Entity
+            Repl := EntityDef.Value
+          ELSE BEGIN                      // External Entity
+            ExternalEntity := LoadExternalEntity (EntityDef.SystemId, EntityDef.PublicId, EntityDef.NotationName);
+            Repl := StrPas (ExternalEntity.DocBuffer);  // !!! What if it contains a Text Declaration?
+            ExternalEntity.Free;
+            END;
+          ReplaceEntities (Repl);    // Recursion
+          END
+        ELSE
+          Repl := Copy (Str, PosAmp, Len);
+        END;
+      Delete (Str, PosAmp, Len);  
+      Insert (Repl, Str, PosAmp);
+      Start := PosAmp + Length (Repl);
+    UNTIL FALSE;
+  END;
+BEGIN
+  ReplaceEntities (Str);
+END;
+
+
+FUNCTION  TXmlParser.LoadExternalEntity (SystemId, PublicId, Notation : STRING) : TXmlParser;
+          // This will be called whenever there is a Parsed External Entity or
+          // the DTD External Subset to be parsed.
+          // It has to create a TXmlParser instance and load the desired Entity.
+          // This instance of LoadExternalEntity assumes that "SystemId" is a valid
+          // file name (relative to the Document source) and loads this file using
+          // the LoadFromFile method.
+VAR
+  Filename : STRING;
+BEGIN
+  // --- Convert System ID to complete filename
+  Filename := StringReplace (SystemId, '/', '\', [rfReplaceAll]);
+  IF Copy (FSource, 1, 1) <> '<' THEN
+    IF (Copy (Filename, 1, 2) = '\\') OR (Copy (Filename, 2, 1) = ':') THEN
+      // Already has an absolute Path
+    ELSE BEGIN
+      Filename := ExtractFilePath (FSource) + Filename;
+      END;
+
+  // --- Load the File
+  Result := TXmlParser.Create;
+  Result.LoadFromFile (Filename);
+END;
+
+
+FUNCTION  TXmlParser.TranslateEncoding  (CONST Source : STRING) : STRING;
+          // The member variable "CurEncoding" always holds the name of the current
+          // encoding, e.g. 'UTF-8' or 'ISO-8859-1'.
+          // This virtual method "TranslateEncoding" is responsible for translating
+          // the content passed in the "Source" parameter to the Encoding which
+          // is expected by the application.
+          // This instance of "TranlateEncoding" assumes that the Application expects
+          // Windows ANSI (Win1252) strings. It is able to transform UTF-8 or ISO-8859-1
+          // encodings.
+          // If you want your application to understand or create other encodings, you
+          // override this function.
+BEGIN
+  IF CurEncoding = 'UTF-8'
+    THEN Result := Utf8ToAnsi (Source)
+    ELSE Result := Source;
+END;
+
+
+PROCEDURE TXmlParser.DtdElementFound (DtdElementRec : TDtdElementRec);
+          // This method is called for every element which is found in the DTD
+          // declaration. The variant record TDtdElementRec is passed which
+          // holds informations about the element.
+          // You can override this function to handle DTD declarations.
+          // Note that when you parse the same Document instance a second time,
+          // the DTD will not get parsed again.
+BEGIN
+END;
+
+
+FUNCTION TXmlParser.GetDocBuffer: PChar;
+         // Returns FBuffer or a pointer to a NUL char if Buffer is empty
+BEGIN
+  IF FBuffer = NIL
+    THEN Result := #0
+    ELSE Result := FBuffer;
+END;
+
+
+(*$IFNDEF HAS_CONTNRS_UNIT
+===============================================================================================
+TObjectList
+===============================================================================================
+*)
+
+DESTRUCTOR TObjectList.Destroy;
+BEGIN
+  Clear;
+  SetCapacity(0);
+  INHERITED Destroy;
+END;
+
+
+PROCEDURE TObjectList.Delete (Index : INTEGER);
+BEGIN
+  IF (Index < 0) OR (Index >= Count) THEN EXIT;
+  TObject (Items [Index]).Free;
+  INHERITED Delete (Index);
+END;
+
+
+PROCEDURE TObjectList.Clear;
+BEGIN
+  WHILE Count > 0 DO
+    Delete (Count-1);
+END;
+
+(*$ENDIF *)
+
+(*
+===============================================================================================
+TNvpNode
+--------
+Node base class for the TNvpList
+===============================================================================================
+*)
+
+CONSTRUCTOR TNvpNode.Create (TheName, TheValue : STRING);
+BEGIN
+  INHERITED Create;
+  Name  := TheName;
+  Value := TheValue;
+END;
+
+
+(*
+===============================================================================================
+TNvpList
+--------
+A generic List of Name-Value Pairs, based on the TObjectList introduced in Delphi 5
+===============================================================================================
+*)
+
+PROCEDURE TNvpList.Add (Node : TNvpNode);
+VAR
+  I : INTEGER;
+BEGIN
+  FOR I := Count-1 DOWNTO 0 DO
+    IF Node.Name > TNvpNode (Items [I]).Name THEN BEGIN
+      Insert (I+1, Node);
+      EXIT;
+      END;
+  Insert (0, Node);
+END;
+
+
+
+FUNCTION  TNvpList.Node (Name : STRING) : TNvpNode;
+          // Binary search for Node
+VAR
+  L, H : INTEGER;    // Low, High Limit
+  T, C : INTEGER;    // Test Index, Comparison result
+  Last : INTEGER;    // Last Test Index
+BEGIN
+  IF Count=0 THEN BEGIN
+    Result := NIL;
+    EXIT;
+    END;
+
+  L    := 0;
+  H    := Count;
+  Last := -1;
+  REPEAT
+    T := (L+H) DIV 2;
+    IF T=Last THEN BREAK;
+    Result := TNvpNode (Items [T]);
+    C := CompareStr (Result.Name, Name);
+    IF      C = 0 THEN EXIT
+    ELSE IF C < 0 THEN L := T
+    ELSE               H := T;
+    Last := T;
+  UNTIL FALSE;
+  Result := NIL;
+END;
+
+
+FUNCTION  TNvpList.Node (Index : INTEGER) : TNvpNode;
+BEGIN
+  IF (Index < 0) OR (Index >= Count)
+    THEN Result := NIL
+    ELSE Result := TNvpNode (Items [Index]);
+END;
+
+
+FUNCTION  TNvpList.Value (Name : STRING) : STRING;
+VAR
+  Nvp : TNvpNode;
+BEGIN
+  Nvp := TNvpNode (Node (Name));
+  IF Nvp <> NIL
+    THEN Result := Nvp.Value
+    ELSE Result := '';
+END;
+
+
+FUNCTION  TNvpList.Value (Index : INTEGER) : STRING;
+BEGIN
+  IF (Index < 0) OR (Index >= Count)
+    THEN Result := ''
+    ELSE Result := TNvpNode (Items [Index]).Value;
+END;
+
+
+FUNCTION  TNvpList.Name (Index : INTEGER) : STRING;
+BEGIN
+  IF (Index < 0) OR (Index >= Count)
+    THEN Result := ''
+    ELSE Result := TNvpNode (Items [Index]).Name;
+END;
+
+
+(*
+===============================================================================================
+TAttrList
+List of Attributes. The "Analyze" method extracts the Attributes from the given Buffer.
+Is used for extraction of Attributes in Start-Tags, Empty-Element Tags and the "pseudo"
+attributes in XML Prologs, Text Declarations and PIs.
+===============================================================================================
+*)
+
+PROCEDURE TAttrList.Analyze (Start : PChar; VAR Final : PChar);
+          // Analyze the Buffer for Attribute=Name pairs.
+          // Terminates when there is a character which is not IN CNameStart
+          // (e.g. '?>' or '>' or '/>')
+TYPE
+  TPhase = (phName, phEq, phValue);
+VAR
+  Phase : TPhase;
+  F     : PChar;
+  Name  : STRING;
+  Value : STRING;
+  Attr  : TAttr;
+BEGIN
+  Clear;
+  Phase := phName;
+  Final := Start;
+  REPEAT
+    IF (Final^ = #0) OR (Final^ = '>') THEN BREAK;
+    IF NOT (Final^ IN CWhitespace) THEN
+      CASE Phase OF
+        phName  : BEGIN
+                    IF NOT (Final^ IN CNameStart) THEN EXIT;
+                    ExtractName (Final, CWhitespace + ['=', '/'], F);
+                    SetStringSF (Name, Final, F);
+                    Final := F;
+                    Phase := phEq;
+                  END;
+        phEq    : BEGIN
+                    IF Final^ = '=' THEN
+                      Phase := phValue
+                  END;
+        phValue : BEGIN
+                    IF Final^ IN CQuoteChar THEN BEGIN
+                      ExtractQuote (Final, Value, F);
+                      Attr := TAttr.Create;
+                      Attr.Name      := Name;
+                      Attr.Value     := Value;
+                      Attr.ValueType := vtNormal;
+                      Add (Attr);
+                      Final := F;
+                      Phase := phName;
+                      END;
+                  END;
+        END;
+    INC (Final);
+  UNTIL FALSE;
+END;
+
+
+(*
+===============================================================================================
+TElemList
+List of TElemDef nodes.
+===============================================================================================
+*)
+
+FUNCTION  TElemList.Node (Name : STRING) : TElemDef;
+          // Binary search for the Node with the given Name
+VAR
+  L, H : INTEGER;    // Low, High Limit
+  T, C : INTEGER;    // Test Index, Comparison result
+  Last : INTEGER;    // Last Test Index
+BEGIN
+  IF Count=0 THEN BEGIN
+    Result := NIL;
+    EXIT;
+    END;
+
+  L    := 0;
+  H    := Count;
+  Last := -1;
+  REPEAT
+    T := (L+H) DIV 2;
+    IF T=Last THEN BREAK;
+    Result := TElemDef (Items [T]);
+    C := CompareStr (Result.Name, Name);
+    IF C = 0 THEN EXIT
+    ELSE IF C < 0 THEN L := T
+    ELSE               H := T;
+    Last := T;
+  UNTIL FALSE;
+  Result := NIL;
+END;
+
+
+PROCEDURE TElemList.Add (Node : TElemDef);
+VAR
+  I : INTEGER;
+BEGIN
+  FOR I := Count-1 DOWNTO 0 DO
+    IF Node.Name > TElemDef (Items [I]).Name THEN BEGIN
+      Insert (I+1, Node);
+      EXIT;
+      END;
+  Insert (0, Node);
+END;
+
+
+(*
+===============================================================================================
+TScannerXmlParser
+A TXmlParser descendant for the TCustomXmlScanner component
+===============================================================================================
+*)
+
+TYPE
+  TScannerXmlParser = CLASS (TXmlParser)
+                       Scanner : TCustomXmlScanner;
+                       CONSTRUCTOR Create (TheScanner : TCustomXmlScanner);
+                       FUNCTION  LoadExternalEntity (SystemId, PublicId,
+                                                     Notation : STRING) : TXmlParser;  OVERRIDE;
+                       FUNCTION  TranslateEncoding  (CONST Source : STRING) : STRING;  OVERRIDE;
+                       PROCEDURE DtdElementFound (DtdElementRec : TDtdElementRec);     OVERRIDE;
+                      END;
+
+CONSTRUCTOR TScannerXmlParser.Create (TheScanner : TCustomXmlScanner);
+BEGIN
+  INHERITED Create;
+  Scanner := TheScanner;
+END;
+
+
+FUNCTION  TScannerXmlParser.LoadExternalEntity (SystemId, PublicId, Notation : STRING) : TXmlParser;
+BEGIN
+  IF Assigned (Scanner.FOnLoadExternal)
+    THEN Scanner.FOnLoadExternal (Scanner, SystemId, PublicId, Notation, Result)
+    ELSE Result :=  INHERITED LoadExternalEntity (SystemId, PublicId, Notation);
+END;
+
+
+FUNCTION  TScannerXmlParser.TranslateEncoding  (CONST Source : STRING) : STRING;
+BEGIN
+  IF Assigned (Scanner.FOnTranslateEncoding)
+    THEN Result := Scanner.FOnTranslateEncoding (Scanner, CurEncoding, Source)
+    ELSE Result := INHERITED TranslateEncoding (Source);
+END;
+
+
+PROCEDURE TScannerXmlParser.DtdElementFound (DtdElementRec : TDtdElementRec);
+BEGIN
+  WITH DtdElementRec DO
+    CASE ElementType OF
+      deElement  : Scanner.WhenElement  (ElemDef);
+      deAttList  : Scanner.WhenAttList  (ElemDef);
+      deEntity   : Scanner.WhenEntity   (EntityDef);
+      deNotation : Scanner.WhenNotation (NotationDef);
+      dePI       : Scanner.WhenPI       (STRING (Target), STRING (Content), AttrList);
+      deComment  : Scanner.WhenComment  (StrSFPas (Start, Final));
+      deError    : Scanner.WhenDtdError (Pos);
+      END;
+END;
+
+
+(*
+===============================================================================================
+TCustomXmlScanner
+===============================================================================================
+*)
+
+CONSTRUCTOR TCustomXmlScanner.Create (AOwner: TComponent);
+BEGIN
+  INHERITED;
+  FXmlParser := TScannerXmlParser.Create (Self);
+END;
+
+
+DESTRUCTOR TCustomXmlScanner.Destroy;
+BEGIN
+  FXmlParser.Free;
+  INHERITED;
+END;
+
+
+PROCEDURE TCustomXmlScanner.LoadFromFile (Filename : TFilename);
+          // Load XML Document from file
+BEGIN
+  FXmlParser.LoadFromFile (Filename);
+END;
+
+
+PROCEDURE TCustomXmlScanner.LoadFromBuffer (Buffer : PChar);
+          // Load XML Document from buffer
+BEGIN
+  FXmlParser.LoadFromBuffer (Buffer);
+END;
+
+
+PROCEDURE TCustomXmlScanner.SetBuffer (Buffer : PChar);
+          // Refer to Buffer
+BEGIN
+  FXmlParser.SetBuffer (Buffer);
+END;
+
+
+FUNCTION  TCustomXmlScanner.GetFilename : TFilename;
+BEGIN
+  Result := FXmlParser.Source;
+END;
+
+
+FUNCTION  TCustomXmlScanner.GetNormalize : BOOLEAN;
+BEGIN
+  Result := FXmlParser.Normalize;
+END;
+
+
+PROCEDURE TCustomXmlScanner.SetNormalize (Value : BOOLEAN);
+BEGIN
+  FXmlParser.Normalize := Value;
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenXmlProlog(XmlVersion, Encoding: STRING; Standalone : BOOLEAN);
+          // Is called when the parser has parsed the <? xml ?> declaration of the prolog
+BEGIN
+  IF Assigned (FOnXmlProlog) THEN FOnXmlProlog (Self, XmlVersion, Encoding, Standalone);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenComment  (Comment : STRING);
+          // Is called when the parser has parsed a <!-- comment -->
+BEGIN
+  IF Assigned (FOnComment) THEN FOnComment (Self, Comment);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenPI (Target, Content: STRING; Attributes : TAttrList);
+          // Is called when the parser has parsed a <?processing instruction ?>
+BEGIN
+  IF Assigned (FOnPI) THEN FOnPI (Self, Target, Content, Attributes);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenDtdRead (RootElementName : STRING);
+          // Is called when the parser has completely parsed the DTD
+BEGIN
+  IF Assigned (FOnDtdRead) THEN FOnDtdRead (Self, RootElementName);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenStartTag (TagName : STRING; Attributes : TAttrList);
+          // Is called when the parser has parsed a start tag like <p>
+BEGIN
+  IF Assigned (FOnStartTag) THEN FOnStartTag (Self, TagName, Attributes);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenEmptyTag (TagName : STRING; Attributes : TAttrList);
+          // Is called when the parser has parsed an Empty Element Tag like <br/>
+BEGIN
+  IF Assigned (FOnEmptyTag) THEN FOnEmptyTag (Self, TagName, Attributes);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenEndTag (TagName : STRING);
+          // Is called when the parser has parsed an End Tag like </p>
+BEGIN
+  IF Assigned (FOnEndTag) THEN FOnEndTag (Self, TagName);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenContent (Content : STRING);
+          // Is called when the parser has parsed an element's text content
+BEGIN
+  IF Assigned (FOnContent) THEN FOnContent (Self, Content);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenCData (Content : STRING);
+          // Is called when the parser has parsed a CDATA section
+BEGIN
+  IF Assigned (FOnCData) THEN FOnCData (Self, Content);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenElement (ElemDef : TElemDef);
+          // Is called when the parser has parsed an <!ELEMENT> definition
+          // inside the DTD
+BEGIN
+  IF Assigned (FOnElement) THEN FOnElement (Self, ElemDef);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenAttList (ElemDef : TElemDef);
+          // Is called when the parser has parsed an <!ATTLIST> definition
+          // inside the DTD
+BEGIN
+  IF Assigned (FOnAttList) THEN FOnAttList (Self, ElemDef);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenEntity   (EntityDef : TEntityDef);
+          // Is called when the parser has parsed an <!ENTITY> definition
+          // inside the DTD
+BEGIN
+  IF Assigned (FOnEntity) THEN FOnEntity (Self, EntityDef);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenNotation (NotationDef : TNotationDef);
+          // Is called when the parser has parsed a <!NOTATION> definition
+          // inside the DTD
+BEGIN
+  IF Assigned (FOnNotation) THEN FOnNotation (Self, NotationDef);
+END;
+
+
+PROCEDURE TCustomXmlScanner.WhenDtdError (ErrorPos : PChar);
+          // Is called when the parser has found an Error in the DTD
+BEGIN
+  IF Assigned (FOnDtdError) THEN FOnDtdError (Self, ErrorPos);
+END;
+
+
+PROCEDURE TCustomXmlScanner.Execute;
+          // Perform scanning
+          // Scanning is done synchronously, i.e. you can expect events to be triggered
+          // in the order of the XML data stream. Execute will finish when the whole XML
+          // document has been scanned or when the StopParser property has been set to TRUE.
+BEGIN
+  FStopParser := FALSE;
+  FXmlParser.StartScan;
+  WHILE FXmlParser.Scan AND (NOT FStopParser) DO
+    CASE FXmlParser.CurPartType OF
+      ptNone      : ;
+      ptXmlProlog : WhenXmlProlog (FXmlParser.XmlVersion, FXmlParser.Encoding, FXmlParser.Standalone);
+      ptComment   : WhenComment   (StrSFPas (FXmlParser.CurStart, FXmlParser.CurFinal));
+      ptPI        : WhenPI        (FXmlParser.CurName, FXmlParser.CurContent, FXmlParser.CurAttr);
+      ptDtdc      : WhenDtdRead   (FXmlParser.RootName);
+      ptStartTag  : WhenStartTag  (FXmlParser.CurName, FXmlParser.CurAttr);
+      ptEmptyTag  : WhenEmptyTag  (FXmlParser.CurName, FXmlParser.CurAttr);
+      ptEndTag    : WhenEndTag    (FXmlParser.CurName);
+      ptContent   : WhenContent   (FXmlParser.CurContent);
+      ptCData     : WhenCData     (FXmlParser.CurContent);
+      END;
+END;
+
+
+END.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/logger.pas b/src/lib/JEDI-SDL/SDL/Pas/logger.pas
new file mode 100644
index 00000000..ad9b24e6
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/logger.pas
@@ -0,0 +1,189 @@
+unit logger;
+{
+  $Id: logger.pas,v 1.2 2006/11/26 16:58:04 savage Exp $
+
+}
+{******************************************************************************}
+{                                                                              }
+{                Error Logging Unit                                            }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominique Louis are                                      }
+{ Copyright (C) 2000 - 2001 Dominique Louis.                                   }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{                                                                              }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   Logging functions...                                                       }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{               2001 - DL : Initial creation                                   }
+{         25/10/2001 - DRE : Added $M+ directive to allow published            }
+{                                in classes. Added a compile directive         }
+{                                around fmShareExclusive as this does not      }
+{                                exist in Free Pascal                          }
+{                                                                              }
+{******************************************************************************}
+{
+  $Log: logger.pas,v $
+  Revision 1.2  2006/11/26 16:58:04  savage
+  Modifed to create separate log files. Therefore each instance running from the same directory will have their own individual log file, prepended with a number.
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+  
+}
+
+{$I jedi-sdl.inc}
+
+{$WEAKPACKAGEUNIT OFF}
+
+interface
+
+uses
+  Classes,
+  SysUtils;
+
+type
+  TLogger = class
+  private
+    FFileHandle : TextFile;
+    FApplicationName : string;
+    FApplicationPath : string;
+  protected
+
+  public
+    constructor Create;
+    destructor Destroy; override;
+    function GetApplicationName: string;
+    function GetApplicationPath: string;
+    procedure LogError( ErrorMessage : string; Location : string );
+    procedure LogWarning( WarningMessage : string; Location : string );
+    procedure LogStatus( StatusMessage : string; Location : string );
+  published
+    property ApplicationName : string read GetApplicationName;
+    property ApplicationPath : string read GetApplicationPath;
+  end;
+
+var
+  Log : TLogger;
+
+implementation
+
+{ TLogger }
+constructor TLogger.Create;
+var
+  FileName : string;
+  FileNo : integer;
+begin
+  FApplicationName := ExtractFileName( ParamStr(0) );
+  FApplicationPath := ExtractFilePath( ParamStr(0) );
+  FileName := FApplicationPath + ChangeFileExt( FApplicationName, '.log' );
+  FileNo := 0;
+  while FileExists( FileName ) do
+  begin
+    inc( FileNo );
+    FileName := FApplicationPath + IntToStr( FileNo ) + ChangeFileExt( FApplicationName, '.log' )
+  end;
+  AssignFile( FFileHandle, FileName );
+  ReWrite( FFileHandle );
+  (*inherited Create( FApplicationPath + ChangeFileExt( FApplicationName, '.log' ),
+                    fmCreate {$IFNDEF FPC}or fmShareExclusive{$ENDIF} );*)
+end;
+
+destructor TLogger.Destroy;
+begin
+  CloseFile( FFileHandle );
+  inherited;
+end;
+
+function TLogger.GetApplicationName: string;
+begin
+  result := FApplicationName;
+end;
+
+function TLogger.GetApplicationPath: string;
+begin
+  result := FApplicationPath;
+end;
+
+procedure TLogger.LogError(ErrorMessage, Location: string);
+var
+  S : string;
+begin
+  S := '*** ERROR *** : @ ' + TimeToStr(Time) + ' MSG : ' + ErrorMessage + ' IN : ' + Location + #13#10;
+  WriteLn( FFileHandle,  S );
+  Flush( FFileHandle );
+end;
+
+procedure TLogger.LogStatus(StatusMessage, Location: string);
+var
+  S : string;
+begin
+  S := 'STATUS INFO : @ ' + TimeToStr(Time) + ' MSG : ' + StatusMessage + ' IN : ' + Location + #13#10;
+  WriteLn( FFileHandle,  S );
+  Flush( FFileHandle );
+end;
+
+procedure TLogger.LogWarning(WarningMessage, Location: string);
+var
+  S : string;
+begin
+  S := '=== WARNING === : @ ' + TimeToStr(Time) + ' MSG : ' + WarningMessage + ' IN : ' + Location + #13#10;
+  WriteLn( FFileHandle,  S );
+  Flush( FFileHandle );
+end;
+
+initialization
+begin
+  Log := TLogger.Create;
+  Log.LogStatus( 'Starting Application', 'Initialization' );
+end;
+
+finalization
+begin
+  Log.LogStatus( 'Terminating Application', 'Finalization' );
+  Log.Free;
+  Log := nil;
+end;
+
+end.
+ 
\ No newline at end of file
diff --git a/src/lib/JEDI-SDL/SDL/Pas/moduleloader.pas b/src/lib/JEDI-SDL/SDL/Pas/moduleloader.pas
new file mode 100644
index 00000000..796aa0ab
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/moduleloader.pas
@@ -0,0 +1,320 @@
+unit moduleloader;
+{
+  $Id: moduleloader.pas,v 1.4 2004/02/20 17:19:10 savage Exp $
+  
+}
+{******************************************************************}
+{                                                                  }
+{       Project JEDI                                               }
+{       OS independent Dynamic Loading Helpers                     }
+{                                                                  }
+{ The initial developer of the this code is                        }
+{ Robert Marquardt <robert_marquardt@gmx.de)                       }
+{                                                                  }
+{ Copyright (C) 2000, 2001 Robert Marquardt.                       }
+{                                                                  }
+{ Obtained through:                                                }
+{ Joint Endeavour of Delphi Innovators (Project JEDI)              }
+{                                                                  }
+{ You may retrieve the latest version of this file at the Project  }
+{ JEDI home page, located at http://delphi-jedi.org                }
+{                                                                  }
+{ The contents of this file are used with permission, subject to   }
+{ the Mozilla Public License Version 1.1 (the "License"); you may  }
+{ not use this file except in compliance with the License. You may }
+{ obtain a copy of the License at                                  }
+{ http://www.mozilla.org/NPL/NPL-1_1Final.html                     }
+{                                                                  }
+{ Software distributed under the License is distributed on an      }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or   }
+{ implied. See the License for the specific language governing     }
+{ rights and limitations under the License.                        }
+{                                                                  }
+{******************************************************************}
+{
+  $Log: moduleloader.pas,v $
+  Revision 1.4  2004/02/20 17:19:10  savage
+  Added Calling convention to Win32 functions just in case.
+
+  Revision 1.3  2004/02/14 22:36:29  savage
+  Fixed inconsistencies of using LoadLibrary and LoadModule.
+  Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
+
+  Revision 1.2  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.1  2004/02/14 00:04:50  savage
+  dllfuncs conflicts with FreePascal so it has been renamed back to the moduleloader.pas
+
+  Revision 1.1  2004/02/05 00:08:19  savage
+  Module 1.0 release
+
+  
+}
+
+interface
+
+{$i jedi-sdl.inc}
+{$WEAKPACKAGEUNIT ON}
+
+// each OS gets its own IFDEFed complete code block to make reading easier
+
+{$IFDEF MSWINDOWS}
+uses
+  Windows;
+
+type
+  // Handle to a loaded DLL
+  TModuleHandle = HINST;
+
+const
+  // Value designating an unassigned TModuleHandle od a failed loading
+  INVALID_MODULEHANDLE_VALUE = TModuleHandle(0);
+
+function LoadModule(var Module: TModuleHandle; FileName: PChar): Boolean; stdcall;
+function LoadModuleEx(var Module: TModuleHandle; FileName: PChar; Flags: Cardinal): Boolean; stdcall;
+procedure UnloadModule(var Module: TModuleHandle); stdcall;
+function GetModuleSymbol(Module: TModuleHandle; SymbolName: PChar): Pointer; stdcall;
+function GetModuleSymbolEx(Module: TModuleHandle; SymbolName: PChar; var Accu: Boolean): Pointer; stdcall;
+function ReadModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean; stdcall;
+function WriteModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean; stdcall;
+
+implementation
+
+// load the DLL file FileName
+// the rules for FileName are those of LoadLibrary
+// Returns: True = success, False = failure to load
+// Assigns: the handle of the loaded DLL to Module
+// Warning: if Module has any other value than INVALID_MODULEHANDLE_VALUE
+// on entry the function will do nothing but returning success.
+
+function LoadModule(var Module: TModuleHandle; FileName: PChar): Boolean;
+begin
+  if Module = INVALID_MODULEHANDLE_VALUE then
+    Module := LoadLibrary( FileName );
+  Result := Module <> INVALID_MODULEHANDLE_VALUE;
+end;
+
+// load the DLL file FileName
+// LoadLibraryEx is used to get better control of the loading
+// for the allowed values for flags see LoadLibraryEx documentation.
+
+function LoadModuleEx(var Module: TModuleHandle; FileName: PChar; Flags: Cardinal): Boolean;
+begin
+  if Module = INVALID_MODULEHANDLE_VALUE then
+    Module := LoadLibraryEx( FileName, 0, Flags);
+  Result := Module <> INVALID_MODULEHANDLE_VALUE;
+end;
+
+// unload a DLL loaded with LoadModule or LoadModuleEx
+// The procedure will not try to unload a handle with
+// value INVALID_MODULEHANDLE_VALUE and assigns this value
+// to Module after unload.
+
+procedure UnloadModule(var Module: TModuleHandle);
+begin
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    FreeLibrary(Module);
+  Module := INVALID_MODULEHANDLE_VALUE;
+end;
+
+// returns the pointer to the symbol named SymbolName
+// if it is exported from the DLL Module
+// nil is returned if the symbol is not available
+
+function GetModuleSymbol(Module: TModuleHandle; SymbolName: PChar): Pointer;
+begin
+  Result := nil;
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    Result := GetProcAddress(Module, SymbolName );
+end;
+
+// returns the pointer to the symbol named SymbolName
+// if it is exported from the DLL Module
+// nil is returned if the symbol is not available.
+// as an extra the boolean variable Accu is updated
+// by anding in the success of the function.
+// This is very handy for rendering a global result
+// when accessing a long list of symbols.
+
+function GetModuleSymbolEx(Module: TModuleHandle; SymbolName: PChar; var Accu: Boolean): Pointer;
+begin
+  Result := nil;
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    Result := GetProcAddress(Module, SymbolName );
+  Accu := Accu and (Result <> nil);
+end;
+
+// get the value of variables exported from a DLL Module
+// Delphi cannot access variables in a DLL directly, so
+// this function allows to copy the data from the DLL.
+// Beware! You are accessing the DLL memory image directly.
+// Be sure to access a variable not a function and be sure
+// to read the correct amount of data.
+
+function ReadModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+var
+  Sym: Pointer;
+begin
+  Result := True;
+  Sym := GetModuleSymbolEx(Module, SymbolName, Result);
+  if Result then
+    Move(Sym^, Buffer, Size);
+end;
+
+// set the value of variables exported from a DLL Module
+// Delphi cannot access variables in a DLL directly, so
+// this function allows to copy the data to the DLL!
+// BEWARE! You are accessing the DLL memory image directly.
+// Be sure to access a variable not a function and be sure
+// to write the correct amount of data.
+// The changes are not persistent. They get lost when the
+// DLL is unloaded.
+
+function WriteModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+var
+  Sym: Pointer;
+begin
+  Result := True;
+  Sym := GetModuleSymbolEx(Module, SymbolName, Result);
+  if Result then
+    Move(Buffer, Sym^, Size);
+end;
+
+{$ENDIF}
+
+{$IFDEF Unix}
+uses
+{$ifdef FPC}
+  dl,
+  Types,
+  Baseunix,
+  Unix;
+{$else}
+  Types,
+  Libc;
+{$endif}
+
+type
+  // Handle to a loaded .so
+  TModuleHandle = Pointer;
+
+const
+  // Value designating an unassigned TModuleHandle od a failed loading
+  INVALID_MODULEHANDLE_VALUE = TModuleHandle(nil);
+
+function LoadModule(var Module: TModuleHandle; FileName: PChar): Boolean;
+function LoadModuleEx(var Module: TModuleHandle; FileName: PChar; Flags: Cardinal): Boolean;
+procedure UnloadModule(var Module: TModuleHandle);
+function GetModuleSymbol(Module: TModuleHandle; SymbolName: PChar): Pointer;
+function GetModuleSymbolEx(Module: TModuleHandle; SymbolName: PChar; var Accu: Boolean): Pointer;
+function ReadModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+function WriteModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+
+implementation
+
+// load the .so file FileName
+// the rules for FileName are those of dlopen()
+// Returns: True = success, False = failure to load
+// Assigns: the handle of the loaded .so to Module
+// Warning: if Module has any other value than INVALID_MODULEHANDLE_VALUE
+// on entry the function will do nothing but returning success.
+
+function LoadModule(var Module: TModuleHandle; FileName: PChar): Boolean;
+begin
+  if Module = INVALID_MODULEHANDLE_VALUE then
+    Module := dlopen( FileName, RTLD_NOW);
+  Result := Module <> INVALID_MODULEHANDLE_VALUE;
+end;
+
+// load the .so file FileName
+// dlopen() with flags is used to get better control of the loading
+// for the allowed values for flags see "man dlopen".
+
+function LoadModuleEx(var Module: TModuleHandle; FileName: PChar; Flags: Cardinal): Boolean;
+begin
+  if Module = INVALID_MODULEHANDLE_VALUE then
+    Module := dlopen( FileName, Flags);
+  Result := Module <> INVALID_MODULEHANDLE_VALUE;
+end;
+
+// unload a .so loaded with LoadModule or LoadModuleEx
+// The procedure will not try to unload a handle with
+// value INVALID_MODULEHANDLE_VALUE and assigns this value
+// to Module after unload.
+
+procedure UnloadModule(var Module: TModuleHandle);
+begin
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    dlclose(Module);
+  Module := INVALID_MODULEHANDLE_VALUE;
+end;
+
+// returns the pointer to the symbol named SymbolName
+// if it is exported from the .so Module
+// nil is returned if the symbol is not available
+
+function GetModuleSymbol(Module: TModuleHandle; SymbolName: PChar): Pointer;
+begin
+  Result := nil;
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    Result := dlsym(Module, SymbolName );
+end;
+
+// returns the pointer to the symbol named SymbolName
+// if it is exported from the .so Module
+// nil is returned if the symbol is not available.
+// as an extra the boolean variable Accu is updated
+// by anding in the success of the function.
+// This is very handy for rendering a global result
+// when accessing a long list of symbols.
+
+function GetModuleSymbolEx(Module: TModuleHandle; SymbolName: PChar; var Accu: Boolean): Pointer;
+begin
+  Result := nil;
+  if Module <> INVALID_MODULEHANDLE_VALUE then
+    Result := dlsym(Module, SymbolName );
+  Accu := Accu and (Result <> nil);
+end;
+
+// get the value of variables exported from a .so Module
+// Delphi cannot access variables in a .so directly, so
+// this function allows to copy the data from the .so.
+// Beware! You are accessing the .so memory image directly.
+// Be sure to access a variable not a function and be sure
+// to read the correct amount of data.
+
+function ReadModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+var
+  Sym: Pointer;
+begin
+  Result := True;
+  Sym := GetModuleSymbolEx(Module, SymbolName, Result);
+  if Result then
+    Move(Sym^, Buffer, Size);
+end;
+
+// set the value of variables exported from a .so Module
+// Delphi cannot access variables in a .so directly, so
+// this function allows to copy the data to the .so!
+// BEWARE! You are accessing the .so memory image directly.
+// Be sure to access a variable not a function and be sure
+// to write the correct amount of data.
+// The changes are not persistent. They get lost when the
+// .so is unloaded.
+
+function WriteModuleData(Module: TModuleHandle; SymbolName: PChar; var Buffer; Size: Cardinal): Boolean;
+var
+  Sym: Pointer;
+begin
+  Result := True;
+  Sym := GetModuleSymbolEx(Module, SymbolName, Result);
+  if Result then
+    Move(Buffer, Sym^, Size);
+end;
+{$ENDIF}
+
+{$IFDEF __MACH__} // Mach definitions go here
+{$ENDIF}
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/registryuserpreferences.pas b/src/lib/JEDI-SDL/SDL/Pas/registryuserpreferences.pas
new file mode 100644
index 00000000..4a5d55f0
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/registryuserpreferences.pas
@@ -0,0 +1,229 @@
+unit registryuserpreferences;
+{
+  $Id: registryuserpreferences.pas,v 1.1 2004/09/30 22:35:47 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{             Wrapper class for Windows Register and INI Files                 }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominqiue Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominqiue Louis are                                      }
+{ Copyright (C) 2000 - 2001 Dominqiue Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{                                                                              }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   September   23 2004 - DL : Initial Creation                                }
+{
+  $Log: registryuserpreferences.pas,v $
+  Revision 1.1  2004/09/30 22:35:47  savage
+  Changes, enhancements and additions as required to get SoAoS working.
+
+
+}
+{******************************************************************************}
+
+interface
+
+uses
+  {$IFDEF REG}
+  Registry,
+  {$ELSE}
+  IniFiles,
+  {$ENDIF}
+  Classes,
+  userpreferences;
+
+type
+  TRegistryUserPreferences = class( TUserPreferences )
+  private
+
+  protected
+    function GetSection( const Index : Integer ) : string; virtual; abstract;
+    function GetIdentifier( const Index : Integer ) : string; virtual; abstract;
+    function GetDefaultBoolean( const Index : Integer ) : Boolean; override;
+    function GetBoolean( const Index : Integer ) : Boolean; override;
+    procedure SetBoolean( const Index : Integer; const Value : Boolean ); override;
+    function GetDefaultDateTime( const Index : Integer ) : TDateTime; override;
+    function GetDateTime( const Index : Integer ) : TDateTime; override;
+    procedure SetDateTime( const Index : Integer; const Value : TDateTime ); override;
+    function GetDefaultInteger( const Index : Integer ) : Integer; override;
+    function GetInteger( const Index : Integer ) : Integer; override;
+    procedure SetInteger( const Index : Integer; const Value : Integer ); override;
+    function GetDefaultFloat( const Index : Integer ) : single; override;
+    function GetFloat( const Index : Integer ) : single; override;
+    procedure SetFloat( const Index : Integer; const Value : single ); override;
+    function GetDefaultString( const Index : Integer ) : string; override;
+    function GetString( const Index : Integer ) : string; override;
+    procedure SetString( const Index : Integer; const Value : string ); override;
+  public
+    Registry : {$IFDEF REG}TRegIniFile{$ELSE}TIniFile{$ENDIF};
+    constructor Create( const FileName : string = '' ); reintroduce;
+    destructor Destroy; override;
+    procedure Update; override;
+  end;
+
+implementation
+
+uses
+  SysUtils;
+
+{ TRegistryUserPreferences }
+constructor TRegistryUserPreferences.Create( const FileName : string );
+var
+  defFileName : string;
+begin
+  inherited Create;
+
+  if FileName <> '' then
+    defFileName := FileName
+  else
+    defFileName := ChangeFileExt( ParamStr( 0 ), '.ini' );
+
+  Registry := {$IFDEF REG}TRegIniFile{$ELSE}TIniFile{$ENDIF}.Create( defFileName );
+end;
+
+destructor TRegistryUserPreferences.Destroy;
+begin
+  Update;
+  Registry.Free;
+  Registry := nil;
+  inherited;
+end;
+
+function TRegistryUserPreferences.GetBoolean( const Index : Integer ) : Boolean;
+begin
+  Result := Registry.ReadBool( GetSection( Index ), GetIdentifier( Index ), GetDefaultBoolean( Index ) );
+end;
+
+function TRegistryUserPreferences.GetDateTime( const Index : Integer ): TDateTime;
+begin
+  Result := Registry.ReadDateTime( GetSection( Index ){$IFNDEF REG}, GetIdentifier( Index ), GetDefaultDateTime( Index ){$ENDIF} );
+end;
+
+function TRegistryUserPreferences.GetDefaultBoolean( const Index : Integer ) : Boolean;
+begin
+  result := false;
+end;
+
+function TRegistryUserPreferences.GetDefaultDateTime( const Index: Integer ) : TDateTime;
+begin
+  result := Now;
+end;
+
+function TRegistryUserPreferences.GetDefaultFloat( const Index: Integer ) : single;
+begin
+  result := 0.0;
+end;
+
+function TRegistryUserPreferences.GetDefaultInteger(const Index : Integer ) : Integer;
+begin
+  result := 0;
+end;
+
+function TRegistryUserPreferences.GetDefaultString( const Index : Integer ) : string;
+begin
+  result := '';
+end;
+
+function TRegistryUserPreferences.GetFloat( const Index : Integer ): single;
+begin
+  Result := Registry.ReadFloat( GetSection( Index ){$IFNDEF REG}, GetIdentifier( Index ), GetDefaultFloat( Index ){$ENDIF} );
+end;
+
+function TRegistryUserPreferences.GetInteger( const Index : Integer ) : Integer;
+begin
+  Result := Registry.ReadInteger( GetSection( Index ), GetIdentifier( Index ), GetDefaultInteger( Index )  );
+end;
+
+function TRegistryUserPreferences.GetString( const Index : Integer ): string;
+begin
+  Result := Registry.ReadString( GetSection( Index ), GetIdentifier( Index ), GetDefaultString( Index ) );
+end;
+
+procedure TRegistryUserPreferences.SetBoolean( const Index : Integer; const Value : Boolean );
+begin
+  Registry.WriteBool( GetSection( Index ), GetIdentifier( Index ), Value );
+  inherited;
+end;
+
+procedure TRegistryUserPreferences.SetDateTime( const Index: Integer; const Value: TDateTime );
+begin
+  Registry.WriteDateTime( GetSection( Index ){$IFNDEF REG}, GetIdentifier( Index ){$ENDIF}, Value );
+  inherited;
+end;
+
+procedure TRegistryUserPreferences.SetFloat(const Index: Integer; const Value: single);
+begin
+  Registry.WriteFloat( GetSection( Index ){$IFNDEF REG}, GetIdentifier( Index ){$ENDIF}, Value );
+  inherited;
+end;
+
+procedure TRegistryUserPreferences.SetInteger( const Index, Value : Integer );
+begin
+  Registry.WriteInteger( GetSection( Index ), GetIdentifier( Index ), Value );
+  inherited;
+end;
+
+procedure TRegistryUserPreferences.SetString( const Index : Integer; const Value : string );
+begin
+  Registry.WriteString( GetSection( Index ), GetIdentifier( Index ), Value );
+  inherited;
+end;
+
+procedure TRegistryUserPreferences.Update;
+begin
+  {$IFDEF REG}
+  Registry.CloseKey;
+  {$ELSE}
+  Registry.UpdateFile;
+  {$ENDIF}
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdl.pas b/src/lib/JEDI-SDL/SDL/Pas/sdl.pas
new file mode 100644
index 00000000..736009c2
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdl.pas
@@ -0,0 +1,4332 @@
+unit sdl;
+{
+  $Id: sdl.pas,v 1.38 2008/01/26 10:09:32 savage Exp $
+
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{             Conversion of the Simple DirectMedia Layer Headers               }
+{                                                                              }
+{ Portions created by Sam Lantinga <slouken@devolution.com> are                }
+{ Copyright (C) 1997-2004  Sam Lantinga                                        }
+{ 5635-34 Springhouse Dr.                                                      }
+{ Pleasanton, CA 94588 (USA)                                                   }
+{                                                                              }
+{ All Rights Reserved.                                                         }
+{                                                                              }
+{ The original files are : SDL.h                                               }
+{                          SDL_main.h                                          }
+{                          SDL_types.h                                         }
+{                          SDL_rwops.h                                         }
+{                          SDL_timer.h                                         }
+{                          SDL_audio.h                                         }
+{                          SDL_cdrom.h                                         }
+{                          SDL_joystick.h                                      }
+{                          SDL_mouse.h                                         }
+{                          SDL_keyboard.h                                      }
+{                          SDL_events.h                                        }
+{                          SDL_video.h                                         }
+{                          SDL_byteorder.h                                     }
+{                          SDL_version.h                                       }
+{                          SDL_active.h                                        }
+{                          SDL_thread.h                                        }
+{                          SDL_mutex .h                                        }
+{                          SDL_getenv.h                                        }
+{                          SDL_loadso.h                                        }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominique Louis are                                      }
+{ Copyright (C) 2000 - 2004 Dominique Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Tom Jones <tigertomjones@gmx.de>  His Project inspired this conversion       }
+{ Matthias Thoma <ma.thoma@gmx.de>                                             }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   May      08 2001 - DL : Added Keyboard  State Array ( See demos for how to }
+{                           use )                                              }
+{                           PKeyStateArr = ^TKeyStateArr;                      }
+{                           TKeyStateArr = array[0..65000] of UInt8;           }
+{                           As most games will need it.                        }
+{                                                                              }
+{   April    02 2001 - DL : Added SDL_getenv.h definitions and tested version  }
+{                           1.2.0 compatability.                               }
+{                                                                              }
+{   March    13 2001 - MT : Added Linux compatibility.                         }
+{                                                                              }
+{   March    10 2001 - MT : Added externalsyms for DEFINES                     }
+{                           Changed the license header                         }
+{                                                                              }
+{   March    09 2001 - MT : Added Kylix Ifdefs/Deleted the uses mmsystem       }
+{                                                                              }
+{   March    01 2001 - DL : Update conversion of version 1.1.8                 }
+{                                                                              }
+{   July     22 2001 - DL : Added TUInt8Array and PUIntArray after suggestions }
+{                           from Matthias Thoma and Eric Grange.               }
+{                                                                              }
+{   October  12 2001 - DL : Various changes as suggested by Matthias Thoma and }
+{                           David Acklam                                       }
+{                                                                              }
+{   October  24 2001 - DL : Added FreePascal support as per suggestions from   }
+{                           Dean Ellis.                                        }
+{                                                                              }
+{   October  27 2001 - DL : Added SDL_BUTTON macro                             }
+{                                                                              }
+{  November  08 2001 - DL : Bug fix as pointed out by Puthoon.                 }
+{                                                                              }
+{  November  29 2001 - DL : Bug fix of SDL_SetGammaRamp as pointed out by Simon}
+{                           Rushton.                                           }
+{                                                                              }
+{  November  30 2001 - DL : SDL_NOFRAME added as pointed out by Simon Rushton. }
+{                                                                              }
+{  December  11 2001 - DL : Added $WEAKPACKAGEUNIT ON to facilitate useage in  }
+{                           Components                                         }
+{                                                                              }
+{  January   05 2002 - DL : Added SDL_Swap32 function as suggested by Matthias }
+{                           Thoma and also made sure the _getenv from          }
+{                           MSVCRT.DLL uses the right calling convention       }
+{                                                                              }
+{  January   25 2002 - DL : Updated conversion of SDL_AddTimer &               }
+{                           SDL_RemoveTimer as per suggestions from Matthias   }
+{                           Thoma.                                             }
+{                                                                              }
+{  January   27 2002 - DL : Commented out exported function putenv and getenv  }
+{                           So that developers get used to using SDL_putenv    }
+{                           SDL_getenv, as they are more portable              }
+{                                                                              }
+{  March     05 2002 - DL : Added FreeAnNil procedure for Delphi 4 users.      }
+{                                                                              }
+{  October   23 2002 - DL : Added Delphi 3 Define of Win32.                    }
+{                           If you intend to you Delphi 3...                   }
+{                           ( which is officially unsupported ) make sure you  }
+{                           remove references to $EXTERNALSYM in this and other}
+{                           SDL files.                                         }
+{                                                                              }
+{ November  29 2002 - DL : Fixed bug in Declaration of SDL_GetRGBA that was    }
+{                          pointed out by Todd Lang                            }
+{                                                                              }
+{   April   03 2003 - DL : Added jedi-sdl.inc include file to support more     }
+{                          Pascal compilers. Initial support is now included   }
+{                          for GnuPascal, VirtualPascal, TMT and obviously     }
+{                          continue support for Delphi Kylix and FreePascal.   }
+{                                                                              }
+{   April   08 2003 - MK : Aka Mr Kroket - Added Better FPC support            }
+{                                                                              }
+{   April   24 2003 - DL : under instruction from Alexey Barkovoy, I have added}
+{                          better TMT Pascal support and under instruction     }
+{                          from Prof. Abimbola Olowofoyeku (The African Chief),}
+{                          I have added better Gnu Pascal support              }
+{                                                                              }
+{   April   30 2003 - DL : under instruction from David Mears AKA              }
+{                          Jason Siletto, I have added FPC Linux support.      }
+{                          This was compiled with fpc 1.1, so remember to set  }
+{                          include file path. ie. -Fi/usr/share/fpcsrc/rtl/*   }
+{                                                                              }
+{
+  $Log: sdl.pas,v $
+  Revision 1.38  2008/01/26 10:09:32  savage
+  Added SDL_BUTTON_X1 and SDL_BUTTON_X2 constants for extended mouse buttons. Now makes SDL v1.2.13 compliant.
+
+  Revision 1.37  2007/12/20 22:36:56  savage
+  Added SKYOS support, thanks to Sebastian-Torsten Tillmann
+
+  Revision 1.36  2007/12/05 22:52:04  savage
+  Better Mac OS X support for Frameworks.
+
+  Revision 1.35  2007/12/02 22:41:13  savage
+  Change for Mac OS X to link to SDL Framework
+
+  Revision 1.34  2007/08/26 23:50:53  savage
+  Jonas supplied another fix.
+
+  Revision 1.33  2007/08/26 15:59:46  savage
+  Mac OS changes as suggested by Jonas Maebe
+
+  Revision 1.32  2007/08/22 21:18:43  savage
+  Thanks to Dean for his MouseDelta patch.
+
+  Revision 1.31  2007/05/29 21:30:48  savage
+  Changes as suggested by Almindor for 64bit compatibility.
+
+  Revision 1.30  2007/05/29 19:31:03  savage
+  Fix to TSDL_Overlay structure - thanks David Pethes (aka imcold)
+
+  Revision 1.29  2007/05/20 20:29:11  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.26  2007/02/11 13:38:04  savage
+  Added Nintendo DS support - Thanks Dean.
+
+  Revision 1.25  2006/12/02 00:12:52  savage
+  Updated to latest version
+
+  Revision 1.24  2006/05/18 21:10:04  savage
+  Added 1.2.10 Changes
+
+  Revision 1.23  2005/12/04 23:17:52  drellis
+  Added declaration of SInt8 and PSInt8
+
+  Revision 1.22  2005/05/24 21:59:03  savage
+  Re-arranged uses clause to work on Win32 and Linux, Thanks again Michalis.
+
+  Revision 1.21  2005/05/22 18:42:31  savage
+  Changes as suggested by Michalis Kamburelis. Thanks again.
+
+  Revision 1.20  2005/04/10 11:48:33  savage
+  Changes as suggested by Michalis, thanks.
+
+  Revision 1.19  2005/01/05 01:47:06  savage
+  Changed LibName to reflect what MacOS X should have. ie libSDL*-1.2.0.dylib respectively.
+
+  Revision 1.18  2005/01/04 23:14:41  savage
+  Changed LibName to reflect what most Linux distros will have. ie libSDL*-1.2.so.0 respectively.
+
+  Revision 1.17  2005/01/03 18:40:59  savage
+  Updated Version number to reflect latest one
+
+  Revision 1.16  2005/01/01 02:02:06  savage
+  Updated to v1.2.8
+
+  Revision 1.15  2004/12/24 18:57:11  savage
+  forgot to apply Michalis Kamburelis' patch to the implementation section. now fixed
+
+  Revision 1.14  2004/12/23 23:42:18  savage
+  Applied Patches supplied by Michalis Kamburelis ( THANKS! ), for greater FreePascal compatability.
+
+  Revision 1.13  2004/09/30 22:31:59  savage
+  Updated with slightly different header comments
+
+  Revision 1.12  2004/09/12 21:52:58  savage
+  Slight changes to fix some issues with the sdl classes.
+
+  Revision 1.11  2004/08/14 22:54:30  savage
+  Updated so that Library name defines are correctly defined for MacOS X.
+
+  Revision 1.10  2004/07/20 23:57:33  savage
+  Thanks to Paul Toth for spotting an error in the SDL Audio Convertion structures.
+  In TSDL_AudioCVT the filters variable should point to and array of pointers and not what I had there previously.
+
+  Revision 1.9  2004/07/03 22:07:22  savage
+  Added Bitwise Manipulation Functions for TSDL_VideoInfo struct.
+
+  Revision 1.8  2004/05/10 14:10:03  savage
+  Initial MacOS X support. Fixed defines for MACOS ( Classic ) and DARWIN ( MacOS X ).
+
+  Revision 1.7  2004/04/13 09:32:08  savage
+  Changed Shared object names back to just the .so extension to avoid conflicts on various Linux/Unix distros. Therefore developers will need to create Symbolic links to the actual Share Objects if necessary.
+
+  Revision 1.6  2004/04/01 20:53:23  savage
+  Changed Linux Shared Object names so they reflect the Symbolic Links that are created when installing the RPMs from the SDL site.
+
+  Revision 1.5  2004/02/22 15:32:10  savage
+  SDL_GetEnv Fix so it also works on FPC/Linux. Thanks to Rodrigo for pointing this out.
+
+  Revision 1.4  2004/02/21 23:24:29  savage
+  SDL_GetEnv Fix so that it is not define twice for FPC. Thanks to Rene Hugentobler for pointing out this bug,
+
+  Revision 1.3  2004/02/18 22:35:51  savage
+  Brought sdl.pas up to 1.2.7 compatability
+  Thus...
+  Added SDL_GL_STEREO,
+      SDL_GL_MULTISAMPLEBUFFERS,
+      SDL_GL_MULTISAMPLESAMPLES
+
+  Add DLL/Shared object functions
+  function SDL_LoadObject( const sofile : PChar ) : Pointer;
+
+  function SDL_LoadFunction( handle : Pointer; const name : PChar ) : Pointer;
+
+  procedure SDL_UnloadObject( handle : Pointer );
+
+  Added function to create RWops from const memory: SDL_RWFromConstMem()
+  function SDL_RWFromConstMem(const mem: Pointer; size: Integer) : PSDL_RWops;
+
+  Ported SDL_cpuinfo.h so Now you can test for Specific CPU types.
+
+  Revision 1.2  2004/02/17 21:37:12  savage
+  Tidying up of units
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+}
+{******************************************************************************}
+
+{$I jedi-sdl.inc}
+
+interface
+
+uses
+{$IFDEF __GPC__}
+  system,
+  {$IFDEF WINDOWS}
+  wintypes,
+  {$ELSE}
+  {$ENDIF}
+  gpc;
+{$ENDIF}
+
+{$IFDEF HAS_TYPES}
+  Types{$IFNDEF NDS},{$ELSE};{$ENDIF}
+{$ENDIF}
+
+{$IFDEF WINDOWS}
+  Windows;
+{$ENDIF}
+
+{$IFDEF UNIX}
+  {$IFDEF FPC}
+  {$IFNDEF SKYOS}
+  pthreads,
+  {$ENDIF}
+  baseunix,
+  {$IFNDEF GP2X}
+  {$IFNDEF DARWIN}
+  {$IFNDEF SKYOS}
+  unix,
+  {$ELSE}
+  unix;
+  {$ENDIF}
+  {$ELSE}
+  unix;
+  {$ENDIF}
+  {$ELSE}
+  unix;
+  {$ENDIF}
+  {$IFNDEF GP2X}
+  {$IFNDEF DARWIN}
+  {$IFNDEF SKYOS}
+  x,
+  xlib;
+  {$ENDIF}
+  {$ENDIF}
+  {$ENDIF}
+  {$ELSE}
+  Libc,
+  Xlib;
+  {$ENDIF}
+{$ENDIF}
+
+{$IFDEF __MACH__}
+  GPCMacOSAll;
+{$ENDIF}
+
+{$ifndef FPC}
+type
+  PtrInt = LongInt;
+  PtrUInt = LongWord;
+{$endif}
+
+const
+{$IFDEF WINDOWS}
+  SDLLibName = 'SDL.dll';
+{$ENDIF}
+
+{$IFDEF UNIX}
+{$IFDEF DARWIN}
+  SDLLibName = 'libSDL-1.2.0.dylib';
+  {$linklib libSDL-1.2.0}
+//  {$linklib gcc}
+  {$linklib SDLmain}
+  {$linkframework Cocoa}
+  {$PASCALMAINNAME SDL_main}
+{$ELSE}
+  {$IFDEF FPC}
+  SDLLibName = 'libSDL.so';
+  {$ELSE}
+  SDLLibName = 'libSDL-1.2.so.0';
+  {$ENDIF}
+{$ENDIF}
+{$ENDIF}
+
+{$IFDEF MACOS}
+  SDLLibName = 'SDL';
+  {$linklib libSDL}
+{$ENDIF}
+
+{$IFDEF NDS}
+  SDLLibName = 'libSDL.a';
+  {$linklib libSDL.a}
+  {$linklib libnds9.a}
+  {$linklib libc.a}
+  {$linklib libgcc.a}
+  {$linklib libsysbase.a}
+{$ENDIF}
+
+  // SDL_verion.h constants
+  // Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
+  SDL_MAJOR_VERSION = 1;
+{$EXTERNALSYM SDL_MAJOR_VERSION}
+  SDL_MINOR_VERSION = 2;
+{$EXTERNALSYM SDL_MINOR_VERSION}
+  SDL_PATCHLEVEL    = 13;
+{$EXTERNALSYM SDL_PATCHLEVEL}
+
+  // SDL.h constants
+  SDL_INIT_TIMER = $00000001;
+{$EXTERNALSYM SDL_INIT_TIMER}
+  SDL_INIT_AUDIO = $00000010;
+{$EXTERNALSYM SDL_INIT_AUDIO}
+  SDL_INIT_VIDEO = $00000020;
+{$EXTERNALSYM SDL_INIT_VIDEO}
+  SDL_INIT_CDROM = $00000100;
+{$EXTERNALSYM SDL_INIT_CDROM}
+  SDL_INIT_JOYSTICK = $00000200;
+{$EXTERNALSYM SDL_INIT_JOYSTICK}
+  SDL_INIT_NOPARACHUTE = $00100000; // Don't catch fatal signals
+{$EXTERNALSYM SDL_INIT_NOPARACHUTE}
+  SDL_INIT_EVENTTHREAD = $01000000; // Not supported on all OS's
+{$EXTERNALSYM SDL_INIT_EVENTTHREAD}
+  SDL_INIT_EVERYTHING = $0000FFFF;
+{$EXTERNALSYM SDL_INIT_EVERYTHING}
+
+  // SDL_error.h constants
+  ERR_MAX_STRLEN = 128;
+{$EXTERNALSYM ERR_MAX_STRLEN}
+  ERR_MAX_ARGS = 5;
+{$EXTERNALSYM ERR_MAX_ARGS}
+
+  // SDL_types.h constants
+  SDL_PRESSED = $01;
+{$EXTERNALSYM SDL_PRESSED}
+  SDL_RELEASED = $00;
+{$EXTERNALSYM SDL_RELEASED}
+
+  // SDL_timer.h constants
+  // This is the OS scheduler timeslice, in milliseconds
+  SDL_TIMESLICE = 10;
+{$EXTERNALSYM SDL_TIMESLICE}
+  // This is the maximum resolution of the SDL timer on all platforms
+  TIMER_RESOLUTION = 10; // Experimentally determined
+{$EXTERNALSYM TIMER_RESOLUTION}
+
+  // SDL_audio.h constants
+  AUDIO_U8 = $0008; // Unsigned 8-bit samples
+{$EXTERNALSYM AUDIO_U8}
+  AUDIO_S8 = $8008; // Signed 8-bit samples
+{$EXTERNALSYM AUDIO_S8}
+  AUDIO_U16LSB = $0010; // Unsigned 16-bit samples
+{$EXTERNALSYM AUDIO_U16LSB}
+  AUDIO_S16LSB = $8010; // Signed 16-bit samples
+{$EXTERNALSYM AUDIO_S16LSB}
+  AUDIO_U16MSB = $1010; // As above, but big-endian byte order
+{$EXTERNALSYM AUDIO_U16MSB}
+  AUDIO_S16MSB = $9010; // As above, but big-endian byte order
+{$EXTERNALSYM AUDIO_S16MSB}
+  AUDIO_U16 = AUDIO_U16LSB;
+{$EXTERNALSYM AUDIO_U16}
+  AUDIO_S16 = AUDIO_S16LSB;
+{$EXTERNALSYM AUDIO_S16}
+
+
+  // SDL_cdrom.h constants
+  // The maximum number of CD-ROM tracks on a disk
+  SDL_MAX_TRACKS = 99;
+{$EXTERNALSYM SDL_MAX_TRACKS}
+  // The types of CD-ROM track possible
+  SDL_AUDIO_TRACK = $00;
+{$EXTERNALSYM SDL_AUDIO_TRACK}
+  SDL_DATA_TRACK = $04;
+{$EXTERNALSYM SDL_DATA_TRACK}
+
+  // Conversion functions from frames to Minute/Second/Frames and vice versa
+  CD_FPS = 75;
+{$EXTERNALSYM CD_FPS}
+  // SDL_byteorder.h constants
+  // The two types of endianness
+  SDL_LIL_ENDIAN = 1234;
+{$EXTERNALSYM SDL_LIL_ENDIAN}
+  SDL_BIG_ENDIAN = 4321;
+{$EXTERNALSYM SDL_BIG_ENDIAN}
+
+{$IFDEF IA32}
+
+  SDL_BYTEORDER = SDL_LIL_ENDIAN;
+{$EXTERNALSYM SDL_BYTEORDER}
+  // Native audio byte ordering
+  AUDIO_U16SYS = AUDIO_U16LSB;
+{$EXTERNALSYM AUDIO_U16SYS}
+  AUDIO_S16SYS = AUDIO_S16LSB;
+{$EXTERNALSYM AUDIO_S16SYS}
+
+{$ELSE}
+
+  SDL_BYTEORDER = SDL_BIG_ENDIAN;
+{$EXTERNALSYM SDL_BYTEORDER}
+  // Native audio byte ordering
+  AUDIO_U16SYS = AUDIO_U16MSB;
+{$EXTERNALSYM AUDIO_U16SYS}
+  AUDIO_S16SYS = AUDIO_S16MSB;
+{$EXTERNALSYM AUDIO_S16SYS}
+
+{$ENDIF}
+
+
+  SDL_MIX_MAXVOLUME = 128;
+{$EXTERNALSYM SDL_MIX_MAXVOLUME}
+
+  // SDL_joystick.h constants
+  MAX_JOYSTICKS = 2; // only 2 are supported in the multimedia API
+{$EXTERNALSYM MAX_JOYSTICKS}
+  MAX_AXES = 6; // each joystick can have up to 6 axes
+{$EXTERNALSYM MAX_AXES}
+  MAX_BUTTONS = 32; // and 32 buttons
+{$EXTERNALSYM MAX_BUTTONS}
+  AXIS_MIN = -32768; // minimum value for axis coordinate
+{$EXTERNALSYM AXIS_MIN}
+  AXIS_MAX = 32767; // maximum value for axis coordinate
+{$EXTERNALSYM AXIS_MAX}
+  JOY_AXIS_THRESHOLD = (((AXIS_MAX) - (AXIS_MIN)) / 100); // 1% motion
+{$EXTERNALSYM JOY_AXIS_THRESHOLD}
+  //JOY_BUTTON_FLAG(n)        (1<<n)
+  // array to hold joystick ID values
+  //static UInt        SYS_JoystickID[MAX_JOYSTICKS];
+  //static JOYCAPS        SYS_Joystick[MAX_JOYSTICKS];
+
+  { Get the current state of a POV hat on a joystick
+    The return value is one of the following positions: }
+  SDL_HAT_CENTERED = $00;
+{$EXTERNALSYM SDL_HAT_CENTERED}
+  SDL_HAT_UP = $01;
+{$EXTERNALSYM SDL_HAT_UP}
+  SDL_HAT_RIGHT = $02;
+{$EXTERNALSYM SDL_HAT_RIGHT}
+  SDL_HAT_DOWN = $04;
+{$EXTERNALSYM SDL_HAT_DOWN}
+  SDL_HAT_LEFT = $08;
+{$EXTERNALSYM SDL_HAT_LEFT}
+  SDL_HAT_RIGHTUP = SDL_HAT_RIGHT or SDL_HAT_UP;
+{$EXTERNALSYM SDL_HAT_RIGHTUP}
+  SDL_HAT_RIGHTDOWN = SDL_HAT_RIGHT or SDL_HAT_DOWN;
+{$EXTERNALSYM SDL_HAT_RIGHTDOWN}
+  SDL_HAT_LEFTUP = SDL_HAT_LEFT or SDL_HAT_UP;
+{$EXTERNALSYM SDL_HAT_LEFTUP}
+  SDL_HAT_LEFTDOWN = SDL_HAT_LEFT or SDL_HAT_DOWN;
+{$EXTERNALSYM SDL_HAT_LEFTDOWN}
+
+  // SDL_events.h constants
+  SDL_NOEVENT = 0; // Unused (do not remove)
+{$EXTERNALSYM SDL_NOEVENT}
+  SDL_ACTIVEEVENT = 1; // Application loses/gains visibility
+{$EXTERNALSYM SDL_ACTIVEEVENT}
+  SDL_KEYDOWN = 2; // Keys pressed
+{$EXTERNALSYM SDL_KEYDOWN}
+  SDL_KEYUP = 3; // Keys released
+{$EXTERNALSYM SDL_KEYUP}
+  SDL_MOUSEMOTION = 4; // Mouse moved
+{$EXTERNALSYM SDL_MOUSEMOTION}
+  SDL_MOUSEBUTTONDOWN = 5; // Mouse button pressed
+{$EXTERNALSYM SDL_MOUSEBUTTONDOWN}
+  SDL_MOUSEBUTTONUP = 6; // Mouse button released
+{$EXTERNALSYM SDL_MOUSEBUTTONUP}
+  SDL_JOYAXISMOTION = 7; // Joystick axis motion
+{$EXTERNALSYM SDL_JOYAXISMOTION}
+  SDL_JOYBALLMOTION = 8; // Joystick trackball motion
+{$EXTERNALSYM SDL_JOYBALLMOTION}
+  SDL_JOYHATMOTION = 9; // Joystick hat position change
+{$EXTERNALSYM SDL_JOYHATMOTION}
+  SDL_JOYBUTTONDOWN = 10; // Joystick button pressed
+{$EXTERNALSYM SDL_JOYBUTTONDOWN}
+  SDL_JOYBUTTONUP = 11; // Joystick button released
+{$EXTERNALSYM SDL_JOYBUTTONUP}
+  SDL_QUITEV = 12; // User-requested quit ( Changed due to procedure conflict )
+{$EXTERNALSYM SDL_QUIT}
+  SDL_SYSWMEVENT = 13; // System specific event
+{$EXTERNALSYM SDL_SYSWMEVENT}
+  SDL_EVENT_RESERVEDA = 14; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVEDA}
+  SDL_EVENT_RESERVED = 15; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED}
+  SDL_VIDEORESIZE = 16; // User resized video mode
+{$EXTERNALSYM SDL_VIDEORESIZE}
+  SDL_VIDEOEXPOSE = 17; // Screen needs to be redrawn
+{$EXTERNALSYM SDL_VIDEOEXPOSE}
+  SDL_EVENT_RESERVED2 = 18; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED2}
+  SDL_EVENT_RESERVED3 = 19; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED3}
+  SDL_EVENT_RESERVED4 = 20; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED4}
+  SDL_EVENT_RESERVED5 = 21; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED5}
+  SDL_EVENT_RESERVED6 = 22; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED6}
+  SDL_EVENT_RESERVED7 = 23; // Reserved for future use..
+{$EXTERNALSYM SDL_EVENT_RESERVED7}
+  // Events SDL_USEREVENT through SDL_MAXEVENTS-1 are for your use
+  SDL_USEREVENT = 24;
+{$EXTERNALSYM SDL_USEREVENT}
+  // This last event is only for bounding internal arrays
+  // It is the number of bits in the event mask datatype -- UInt32
+  SDL_NUMEVENTS = 32;
+{$EXTERNALSYM SDL_NUMEVENTS}
+
+  SDL_ALLEVENTS = $FFFFFFFF;
+{$EXTERNALSYM SDL_ALLEVENTS}
+
+  SDL_ACTIVEEVENTMASK = 1 shl SDL_ACTIVEEVENT;
+{$EXTERNALSYM SDL_ACTIVEEVENTMASK}
+  SDL_KEYDOWNMASK = 1 shl SDL_KEYDOWN;
+{$EXTERNALSYM SDL_KEYDOWNMASK}
+  SDL_KEYUPMASK = 1 shl SDL_KEYUP;
+{$EXTERNALSYM SDL_KEYUPMASK}
+  SDL_MOUSEMOTIONMASK = 1 shl SDL_MOUSEMOTION;
+{$EXTERNALSYM SDL_MOUSEMOTIONMASK}
+  SDL_MOUSEBUTTONDOWNMASK = 1 shl SDL_MOUSEBUTTONDOWN;
+{$EXTERNALSYM SDL_MOUSEBUTTONDOWNMASK}
+  SDL_MOUSEBUTTONUPMASK = 1 shl SDL_MOUSEBUTTONUP;
+{$EXTERNALSYM SDL_MOUSEBUTTONUPMASK}
+  SDL_MOUSEEVENTMASK = 1 shl SDL_MOUSEMOTION or
+    1 shl SDL_MOUSEBUTTONDOWN or
+    1 shl SDL_MOUSEBUTTONUP;
+{$EXTERNALSYM SDL_MOUSEEVENTMASK}
+  SDL_JOYAXISMOTIONMASK = 1 shl SDL_JOYAXISMOTION;
+{$EXTERNALSYM SDL_JOYAXISMOTIONMASK}
+  SDL_JOYBALLMOTIONMASK = 1 shl SDL_JOYBALLMOTION;
+{$EXTERNALSYM SDL_JOYBALLMOTIONMASK}
+  SDL_JOYHATMOTIONMASK = 1 shl SDL_JOYHATMOTION;
+{$EXTERNALSYM SDL_JOYHATMOTIONMASK}
+  SDL_JOYBUTTONDOWNMASK = 1 shl SDL_JOYBUTTONDOWN;
+{$EXTERNALSYM SDL_JOYBUTTONDOWNMASK}
+  SDL_JOYBUTTONUPMASK = 1 shl SDL_JOYBUTTONUP;
+{$EXTERNALSYM SDL_JOYBUTTONUPMASK}
+  SDL_JOYEVENTMASK = 1 shl SDL_JOYAXISMOTION or
+    1 shl SDL_JOYBALLMOTION or
+    1 shl SDL_JOYHATMOTION or
+    1 shl SDL_JOYBUTTONDOWN or
+    1 shl SDL_JOYBUTTONUP;
+{$EXTERNALSYM SDL_JOYEVENTMASK}
+  SDL_VIDEORESIZEMASK = 1 shl SDL_VIDEORESIZE;
+{$EXTERNALSYM SDL_VIDEORESIZEMASK}
+  SDL_QUITMASK = 1 shl SDL_QUITEV;
+{$EXTERNALSYM SDL_QUITMASK}
+  SDL_SYSWMEVENTMASK = 1 shl SDL_SYSWMEVENT;
+{$EXTERNALSYM SDL_SYSWMEVENTMASK}
+
+  { This function allows you to set the state of processing certain events.
+    If 'state' is set to SDL_IGNORE, that event will be automatically dropped
+    from the event queue and will not event be filtered.
+    If 'state' is set to SDL_ENABLE, that event will be processed normally.
+    If 'state' is set to SDL_QUERY, SDL_EventState() will return the
+    current processing state of the specified event. }
+
+  SDL_QUERY = -1;
+{$EXTERNALSYM SDL_QUERY}
+  SDL_IGNORE = 0;
+{$EXTERNALSYM SDL_IGNORE}
+  SDL_DISABLE = 0;
+{$EXTERNALSYM SDL_DISABLE}
+  SDL_ENABLE = 1;
+{$EXTERNALSYM SDL_ENABLE}
+
+  //SDL_keyboard.h constants
+  // This is the mask which refers to all hotkey bindings
+  SDL_ALL_HOTKEYS = $FFFFFFFF;
+{$EXTERNALSYM SDL_ALL_HOTKEYS}
+
+{ Enable/Disable keyboard repeat.  Keyboard repeat defaults to off.
+  'delay' is the initial delay in ms between the time when a key is
+  pressed, and keyboard repeat begins.
+  'interval' is the time in ms between keyboard repeat events. }
+
+  SDL_DEFAULT_REPEAT_DELAY = 500;
+{$EXTERNALSYM SDL_DEFAULT_REPEAT_DELAY}
+  SDL_DEFAULT_REPEAT_INTERVAL = 30;
+{$EXTERNALSYM SDL_DEFAULT_REPEAT_INTERVAL}
+
+  // The keyboard syms have been cleverly chosen to map to ASCII
+  SDLK_UNKNOWN = 0;
+{$EXTERNALSYM SDLK_UNKNOWN}
+  SDLK_FIRST = 0;
+{$EXTERNALSYM SDLK_FIRST}
+  SDLK_BACKSPACE = 8;
+{$EXTERNALSYM SDLK_BACKSPACE}
+  SDLK_TAB = 9;
+{$EXTERNALSYM SDLK_TAB}
+  SDLK_CLEAR = 12;
+{$EXTERNALSYM SDLK_CLEAR}
+  SDLK_RETURN = 13;
+{$EXTERNALSYM SDLK_RETURN}
+  SDLK_PAUSE = 19;
+{$EXTERNALSYM SDLK_PAUSE}
+  SDLK_ESCAPE = 27;
+{$EXTERNALSYM SDLK_ESCAPE}
+  SDLK_SPACE = 32;
+{$EXTERNALSYM SDLK_SPACE}
+  SDLK_EXCLAIM = 33;
+{$EXTERNALSYM SDLK_EXCLAIM}
+  SDLK_QUOTEDBL = 34;
+{$EXTERNALSYM SDLK_QUOTEDBL}
+  SDLK_HASH = 35;
+{$EXTERNALSYM SDLK_HASH}
+  SDLK_DOLLAR = 36;
+{$EXTERNALSYM SDLK_DOLLAR}
+  SDLK_AMPERSAND = 38;
+{$EXTERNALSYM SDLK_AMPERSAND}
+  SDLK_QUOTE = 39;
+{$EXTERNALSYM SDLK_QUOTE}
+  SDLK_LEFTPAREN = 40;
+{$EXTERNALSYM SDLK_LEFTPAREN}
+  SDLK_RIGHTPAREN = 41;
+{$EXTERNALSYM SDLK_RIGHTPAREN}
+  SDLK_ASTERISK = 42;
+{$EXTERNALSYM SDLK_ASTERISK}
+  SDLK_PLUS = 43;
+{$EXTERNALSYM SDLK_PLUS}
+  SDLK_COMMA = 44;
+{$EXTERNALSYM SDLK_COMMA}
+  SDLK_MINUS = 45;
+{$EXTERNALSYM SDLK_MINUS}
+  SDLK_PERIOD = 46;
+{$EXTERNALSYM SDLK_PERIOD}
+  SDLK_SLASH = 47;
+{$EXTERNALSYM SDLK_SLASH}
+  SDLK_0 = 48;
+{$EXTERNALSYM SDLK_0}
+  SDLK_1 = 49;
+{$EXTERNALSYM SDLK_1}
+  SDLK_2 = 50;
+{$EXTERNALSYM SDLK_2}
+  SDLK_3 = 51;
+{$EXTERNALSYM SDLK_3}
+  SDLK_4 = 52;
+{$EXTERNALSYM SDLK_4}
+  SDLK_5 = 53;
+{$EXTERNALSYM SDLK_5}
+  SDLK_6 = 54;
+{$EXTERNALSYM SDLK_6}
+  SDLK_7 = 55;
+{$EXTERNALSYM SDLK_7}
+  SDLK_8 = 56;
+{$EXTERNALSYM SDLK_8}
+  SDLK_9 = 57;
+{$EXTERNALSYM SDLK_9}
+  SDLK_COLON = 58;
+{$EXTERNALSYM SDLK_COLON}
+  SDLK_SEMICOLON = 59;
+{$EXTERNALSYM SDLK_SEMICOLON}
+  SDLK_LESS = 60;
+{$EXTERNALSYM SDLK_LESS}
+  SDLK_EQUALS = 61;
+{$EXTERNALSYM SDLK_EQUALS}
+  SDLK_GREATER = 62;
+{$EXTERNALSYM SDLK_GREATER}
+  SDLK_QUESTION = 63;
+{$EXTERNALSYM SDLK_QUESTION}
+  SDLK_AT = 64;
+{$EXTERNALSYM SDLK_AT}
+
+  { Skip uppercase letters }
+
+  SDLK_LEFTBRACKET = 91;
+{$EXTERNALSYM SDLK_LEFTBRACKET}
+  SDLK_BACKSLASH = 92;
+{$EXTERNALSYM SDLK_BACKSLASH}
+  SDLK_RIGHTBRACKET = 93;
+{$EXTERNALSYM SDLK_RIGHTBRACKET}
+  SDLK_CARET = 94;
+{$EXTERNALSYM SDLK_CARET}
+  SDLK_UNDERSCORE = 95;
+{$EXTERNALSYM SDLK_UNDERSCORE}
+  SDLK_BACKQUOTE = 96;
+{$EXTERNALSYM SDLK_BACKQUOTE}
+  SDLK_a = 97;
+{$EXTERNALSYM SDLK_a}
+  SDLK_b = 98;
+{$EXTERNALSYM SDLK_b}
+  SDLK_c = 99;
+{$EXTERNALSYM SDLK_c}
+  SDLK_d = 100;
+{$EXTERNALSYM SDLK_d}
+  SDLK_e = 101;
+{$EXTERNALSYM SDLK_e}
+  SDLK_f = 102;
+{$EXTERNALSYM SDLK_f}
+  SDLK_g = 103;
+{$EXTERNALSYM SDLK_g}
+  SDLK_h = 104;
+{$EXTERNALSYM SDLK_h}
+  SDLK_i = 105;
+{$EXTERNALSYM SDLK_i}
+  SDLK_j = 106;
+{$EXTERNALSYM SDLK_j}
+  SDLK_k = 107;
+{$EXTERNALSYM SDLK_k}
+  SDLK_l = 108;
+{$EXTERNALSYM SDLK_l}
+  SDLK_m = 109;
+{$EXTERNALSYM SDLK_m}
+  SDLK_n = 110;
+{$EXTERNALSYM SDLK_n}
+  SDLK_o = 111;
+{$EXTERNALSYM SDLK_o}
+  SDLK_p = 112;
+{$EXTERNALSYM SDLK_p}
+  SDLK_q = 113;
+{$EXTERNALSYM SDLK_q}
+  SDLK_r = 114;
+{$EXTERNALSYM SDLK_r}
+  SDLK_s = 115;
+{$EXTERNALSYM SDLK_s}
+  SDLK_t = 116;
+{$EXTERNALSYM SDLK_t}
+  SDLK_u = 117;
+{$EXTERNALSYM SDLK_u}
+  SDLK_v = 118;
+{$EXTERNALSYM SDLK_v}
+  SDLK_w = 119;
+{$EXTERNALSYM SDLK_w}
+  SDLK_x = 120;
+{$EXTERNALSYM SDLK_x}
+  SDLK_y = 121;
+{$EXTERNALSYM SDLK_y}
+  SDLK_z = 122;
+{$EXTERNALSYM SDLK_z}
+  SDLK_DELETE = 127;
+{$EXTERNALSYM SDLK_DELETE}
+  // End of ASCII mapped keysyms
+
+  // International keyboard syms
+  SDLK_WORLD_0 = 160; // 0xA0
+{$EXTERNALSYM SDLK_WORLD_0}
+  SDLK_WORLD_1 = 161;
+{$EXTERNALSYM SDLK_WORLD_1}
+  SDLK_WORLD_2 = 162;
+{$EXTERNALSYM SDLK_WORLD_2}
+  SDLK_WORLD_3 = 163;
+{$EXTERNALSYM SDLK_WORLD_3}
+  SDLK_WORLD_4 = 164;
+{$EXTERNALSYM SDLK_WORLD_4}
+  SDLK_WORLD_5 = 165;
+{$EXTERNALSYM SDLK_WORLD_5}
+  SDLK_WORLD_6 = 166;
+{$EXTERNALSYM SDLK_WORLD_6}
+  SDLK_WORLD_7 = 167;
+{$EXTERNALSYM SDLK_WORLD_7}
+  SDLK_WORLD_8 = 168;
+{$EXTERNALSYM SDLK_WORLD_8}
+  SDLK_WORLD_9 = 169;
+{$EXTERNALSYM SDLK_WORLD_9}
+  SDLK_WORLD_10 = 170;
+{$EXTERNALSYM SDLK_WORLD_10}
+  SDLK_WORLD_11 = 171;
+{$EXTERNALSYM SDLK_WORLD_11}
+  SDLK_WORLD_12 = 172;
+{$EXTERNALSYM SDLK_WORLD_12}
+  SDLK_WORLD_13 = 173;
+{$EXTERNALSYM SDLK_WORLD_13}
+  SDLK_WORLD_14 = 174;
+{$EXTERNALSYM SDLK_WORLD_14}
+  SDLK_WORLD_15 = 175;
+{$EXTERNALSYM SDLK_WORLD_15}
+  SDLK_WORLD_16 = 176;
+{$EXTERNALSYM SDLK_WORLD_16}
+  SDLK_WORLD_17 = 177;
+{$EXTERNALSYM SDLK_WORLD_17}
+  SDLK_WORLD_18 = 178;
+{$EXTERNALSYM SDLK_WORLD_18}
+  SDLK_WORLD_19 = 179;
+{$EXTERNALSYM SDLK_WORLD_19}
+  SDLK_WORLD_20 = 180;
+{$EXTERNALSYM SDLK_WORLD_20}
+  SDLK_WORLD_21 = 181;
+{$EXTERNALSYM SDLK_WORLD_21}
+  SDLK_WORLD_22 = 182;
+{$EXTERNALSYM SDLK_WORLD_22}
+  SDLK_WORLD_23 = 183;
+{$EXTERNALSYM SDLK_WORLD_23}
+  SDLK_WORLD_24 = 184;
+{$EXTERNALSYM SDLK_WORLD_24}
+  SDLK_WORLD_25 = 185;
+{$EXTERNALSYM SDLK_WORLD_25}
+  SDLK_WORLD_26 = 186;
+{$EXTERNALSYM SDLK_WORLD_26}
+  SDLK_WORLD_27 = 187;
+{$EXTERNALSYM SDLK_WORLD_27}
+  SDLK_WORLD_28 = 188;
+{$EXTERNALSYM SDLK_WORLD_28}
+  SDLK_WORLD_29 = 189;
+{$EXTERNALSYM SDLK_WORLD_29}
+  SDLK_WORLD_30 = 190;
+{$EXTERNALSYM SDLK_WORLD_30}
+  SDLK_WORLD_31 = 191;
+{$EXTERNALSYM SDLK_WORLD_31}
+  SDLK_WORLD_32 = 192;
+{$EXTERNALSYM SDLK_WORLD_32}
+  SDLK_WORLD_33 = 193;
+{$EXTERNALSYM SDLK_WORLD_33}
+  SDLK_WORLD_34 = 194;
+{$EXTERNALSYM SDLK_WORLD_34}
+  SDLK_WORLD_35 = 195;
+{$EXTERNALSYM SDLK_WORLD_35}
+  SDLK_WORLD_36 = 196;
+{$EXTERNALSYM SDLK_WORLD_36}
+  SDLK_WORLD_37 = 197;
+{$EXTERNALSYM SDLK_WORLD_37}
+  SDLK_WORLD_38 = 198;
+{$EXTERNALSYM SDLK_WORLD_38}
+  SDLK_WORLD_39 = 199;
+{$EXTERNALSYM SDLK_WORLD_39}
+  SDLK_WORLD_40 = 200;
+{$EXTERNALSYM SDLK_WORLD_40}
+  SDLK_WORLD_41 = 201;
+{$EXTERNALSYM SDLK_WORLD_41}
+  SDLK_WORLD_42 = 202;
+{$EXTERNALSYM SDLK_WORLD_42}
+  SDLK_WORLD_43 = 203;
+{$EXTERNALSYM SDLK_WORLD_43}
+  SDLK_WORLD_44 = 204;
+{$EXTERNALSYM SDLK_WORLD_44}
+  SDLK_WORLD_45 = 205;
+{$EXTERNALSYM SDLK_WORLD_45}
+  SDLK_WORLD_46 = 206;
+{$EXTERNALSYM SDLK_WORLD_46}
+  SDLK_WORLD_47 = 207;
+{$EXTERNALSYM SDLK_WORLD_47}
+  SDLK_WORLD_48 = 208;
+{$EXTERNALSYM SDLK_WORLD_48}
+  SDLK_WORLD_49 = 209;
+{$EXTERNALSYM SDLK_WORLD_49}
+  SDLK_WORLD_50 = 210;
+{$EXTERNALSYM SDLK_WORLD_50}
+  SDLK_WORLD_51 = 211;
+{$EXTERNALSYM SDLK_WORLD_51}
+  SDLK_WORLD_52 = 212;
+{$EXTERNALSYM SDLK_WORLD_52}
+  SDLK_WORLD_53 = 213;
+{$EXTERNALSYM SDLK_WORLD_53}
+  SDLK_WORLD_54 = 214;
+{$EXTERNALSYM SDLK_WORLD_54}
+  SDLK_WORLD_55 = 215;
+{$EXTERNALSYM SDLK_WORLD_55}
+  SDLK_WORLD_56 = 216;
+{$EXTERNALSYM SDLK_WORLD_56}
+  SDLK_WORLD_57 = 217;
+{$EXTERNALSYM SDLK_WORLD_57}
+  SDLK_WORLD_58 = 218;
+{$EXTERNALSYM SDLK_WORLD_58}
+  SDLK_WORLD_59 = 219;
+{$EXTERNALSYM SDLK_WORLD_59}
+  SDLK_WORLD_60 = 220;
+{$EXTERNALSYM SDLK_WORLD_60}
+  SDLK_WORLD_61 = 221;
+{$EXTERNALSYM SDLK_WORLD_61}
+  SDLK_WORLD_62 = 222;
+{$EXTERNALSYM SDLK_WORLD_62}
+  SDLK_WORLD_63 = 223;
+{$EXTERNALSYM SDLK_WORLD_63}
+  SDLK_WORLD_64 = 224;
+{$EXTERNALSYM SDLK_WORLD_64}
+  SDLK_WORLD_65 = 225;
+{$EXTERNALSYM SDLK_WORLD_65}
+  SDLK_WORLD_66 = 226;
+{$EXTERNALSYM SDLK_WORLD_66}
+  SDLK_WORLD_67 = 227;
+{$EXTERNALSYM SDLK_WORLD_67}
+  SDLK_WORLD_68 = 228;
+{$EXTERNALSYM SDLK_WORLD_68}
+  SDLK_WORLD_69 = 229;
+{$EXTERNALSYM SDLK_WORLD_69}
+  SDLK_WORLD_70 = 230;
+{$EXTERNALSYM SDLK_WORLD_70}
+  SDLK_WORLD_71 = 231;
+{$EXTERNALSYM SDLK_WORLD_71}
+  SDLK_WORLD_72 = 232;
+{$EXTERNALSYM SDLK_WORLD_72}
+  SDLK_WORLD_73 = 233;
+{$EXTERNALSYM SDLK_WORLD_73}
+  SDLK_WORLD_74 = 234;
+{$EXTERNALSYM SDLK_WORLD_74}
+  SDLK_WORLD_75 = 235;
+{$EXTERNALSYM SDLK_WORLD_75}
+  SDLK_WORLD_76 = 236;
+{$EXTERNALSYM SDLK_WORLD_76}
+  SDLK_WORLD_77 = 237;
+{$EXTERNALSYM SDLK_WORLD_77}
+  SDLK_WORLD_78 = 238;
+{$EXTERNALSYM SDLK_WORLD_78}
+  SDLK_WORLD_79 = 239;
+{$EXTERNALSYM SDLK_WORLD_79}
+  SDLK_WORLD_80 = 240;
+{$EXTERNALSYM SDLK_WORLD_80}
+  SDLK_WORLD_81 = 241;
+{$EXTERNALSYM SDLK_WORLD_81}
+  SDLK_WORLD_82 = 242;
+{$EXTERNALSYM SDLK_WORLD_82}
+  SDLK_WORLD_83 = 243;
+{$EXTERNALSYM SDLK_WORLD_83}
+  SDLK_WORLD_84 = 244;
+{$EXTERNALSYM SDLK_WORLD_84}
+  SDLK_WORLD_85 = 245;
+{$EXTERNALSYM SDLK_WORLD_85}
+  SDLK_WORLD_86 = 246;
+{$EXTERNALSYM SDLK_WORLD_86}
+  SDLK_WORLD_87 = 247;
+{$EXTERNALSYM SDLK_WORLD_87}
+  SDLK_WORLD_88 = 248;
+{$EXTERNALSYM SDLK_WORLD_88}
+  SDLK_WORLD_89 = 249;
+{$EXTERNALSYM SDLK_WORLD_89}
+  SDLK_WORLD_90 = 250;
+{$EXTERNALSYM SDLK_WORLD_90}
+  SDLK_WORLD_91 = 251;
+{$EXTERNALSYM SDLK_WORLD_91}
+  SDLK_WORLD_92 = 252;
+{$EXTERNALSYM SDLK_WORLD_92}
+  SDLK_WORLD_93 = 253;
+{$EXTERNALSYM SDLK_WORLD_93}
+  SDLK_WORLD_94 = 254;
+{$EXTERNALSYM SDLK_WORLD_94}
+  SDLK_WORLD_95 = 255; // 0xFF
+{$EXTERNALSYM SDLK_WORLD_95}
+
+  // Numeric keypad
+  SDLK_KP0 = 256;
+{$EXTERNALSYM SDLK_KP0}
+  SDLK_KP1 = 257;
+{$EXTERNALSYM SDLK_KP1}
+  SDLK_KP2 = 258;
+{$EXTERNALSYM SDLK_KP2}
+  SDLK_KP3 = 259;
+{$EXTERNALSYM SDLK_KP3}
+  SDLK_KP4 = 260;
+{$EXTERNALSYM SDLK_KP4}
+  SDLK_KP5 = 261;
+{$EXTERNALSYM SDLK_KP5}
+  SDLK_KP6 = 262;
+{$EXTERNALSYM SDLK_KP6}
+  SDLK_KP7 = 263;
+{$EXTERNALSYM SDLK_KP7}
+  SDLK_KP8 = 264;
+{$EXTERNALSYM SDLK_KP8}
+  SDLK_KP9 = 265;
+{$EXTERNALSYM SDLK_KP9}
+  SDLK_KP_PERIOD = 266;
+{$EXTERNALSYM SDLK_KP_PERIOD}
+  SDLK_KP_DIVIDE = 267;
+{$EXTERNALSYM SDLK_KP_DIVIDE}
+  SDLK_KP_MULTIPLY = 268;
+{$EXTERNALSYM SDLK_KP_MULTIPLY}
+  SDLK_KP_MINUS = 269;
+{$EXTERNALSYM SDLK_KP_MINUS}
+  SDLK_KP_PLUS = 270;
+{$EXTERNALSYM SDLK_KP_PLUS}
+  SDLK_KP_ENTER = 271;
+{$EXTERNALSYM SDLK_KP_ENTER}
+  SDLK_KP_EQUALS = 272;
+{$EXTERNALSYM SDLK_KP_EQUALS}
+
+  // Arrows + Home/End pad
+  SDLK_UP = 273;
+{$EXTERNALSYM SDLK_UP}
+  SDLK_DOWN = 274;
+{$EXTERNALSYM SDLK_DOWN}
+  SDLK_RIGHT = 275;
+{$EXTERNALSYM SDLK_RIGHT}
+  SDLK_LEFT = 276;
+{$EXTERNALSYM SDLK_LEFT}
+  SDLK_INSERT = 277;
+{$EXTERNALSYM SDLK_INSERT}
+  SDLK_HOME = 278;
+{$EXTERNALSYM SDLK_HOME}
+  SDLK_END = 279;
+{$EXTERNALSYM SDLK_END}
+  SDLK_PAGEUP = 280;
+{$EXTERNALSYM SDLK_PAGEUP}
+  SDLK_PAGEDOWN = 281;
+{$EXTERNALSYM SDLK_PAGEDOWN}
+
+  // Function keys
+  SDLK_F1 = 282;
+{$EXTERNALSYM SDLK_F1}
+  SDLK_F2 = 283;
+{$EXTERNALSYM SDLK_F2}
+  SDLK_F3 = 284;
+{$EXTERNALSYM SDLK_F3}
+  SDLK_F4 = 285;
+{$EXTERNALSYM SDLK_F4}
+  SDLK_F5 = 286;
+{$EXTERNALSYM SDLK_F5}
+  SDLK_F6 = 287;
+{$EXTERNALSYM SDLK_F6}
+  SDLK_F7 = 288;
+{$EXTERNALSYM SDLK_F7}
+  SDLK_F8 = 289;
+{$EXTERNALSYM SDLK_F8}
+  SDLK_F9 = 290;
+{$EXTERNALSYM SDLK_F9}
+  SDLK_F10 = 291;
+{$EXTERNALSYM SDLK_F10}
+  SDLK_F11 = 292;
+{$EXTERNALSYM SDLK_F11}
+  SDLK_F12 = 293;
+{$EXTERNALSYM SDLK_F12}
+  SDLK_F13 = 294;
+{$EXTERNALSYM SDLK_F13}
+  SDLK_F14 = 295;
+{$EXTERNALSYM SDLK_F14}
+  SDLK_F15 = 296;
+{$EXTERNALSYM SDLK_F15}
+
+  // Key state modifier keys
+  SDLK_NUMLOCK = 300;
+{$EXTERNALSYM SDLK_NUMLOCK}
+  SDLK_CAPSLOCK = 301;
+{$EXTERNALSYM SDLK_CAPSLOCK}
+  SDLK_SCROLLOCK = 302;
+{$EXTERNALSYM SDLK_SCROLLOCK}
+  SDLK_RSHIFT = 303;
+{$EXTERNALSYM SDLK_RSHIFT}
+  SDLK_LSHIFT = 304;
+{$EXTERNALSYM SDLK_LSHIFT}
+  SDLK_RCTRL = 305;
+{$EXTERNALSYM SDLK_RCTRL}
+  SDLK_LCTRL = 306;
+{$EXTERNALSYM SDLK_LCTRL}
+  SDLK_RALT = 307;
+{$EXTERNALSYM SDLK_RALT}
+  SDLK_LALT = 308;
+{$EXTERNALSYM SDLK_LALT}
+  SDLK_RMETA = 309;
+{$EXTERNALSYM SDLK_RMETA}
+  SDLK_LMETA = 310;
+{$EXTERNALSYM SDLK_LMETA}
+  SDLK_LSUPER = 311; // Left "Windows" key
+{$EXTERNALSYM SDLK_LSUPER}
+  SDLK_RSUPER = 312; // Right "Windows" key
+{$EXTERNALSYM SDLK_RSUPER}
+  SDLK_MODE = 313; // "Alt Gr" key
+{$EXTERNALSYM SDLK_MODE}
+  SDLK_COMPOSE = 314; // Multi-key compose key
+{$EXTERNALSYM SDLK_COMPOSE}
+
+  // Miscellaneous function keys
+  SDLK_HELP = 315;
+{$EXTERNALSYM SDLK_HELP}
+  SDLK_PRINT = 316;
+{$EXTERNALSYM SDLK_PRINT}
+  SDLK_SYSREQ = 317;
+{$EXTERNALSYM SDLK_SYSREQ}
+  SDLK_BREAK = 318;
+{$EXTERNALSYM SDLK_BREAK}
+  SDLK_MENU = 319;
+{$EXTERNALSYM SDLK_MENU}
+  SDLK_POWER = 320; // Power Macintosh power key
+{$EXTERNALSYM SDLK_POWER}
+  SDLK_EURO = 321; // Some european keyboards
+{$EXTERNALSYM SDLK_EURO}
+
+{$IFDEF GP2X}
+SDLK_GP2X_UP = 0;
+{$EXTERNALSYM SDLK_GP2X_UP}
+SDLK_GP2X_UPLEFT = 1;
+{$EXTERNALSYM SDLK_GP2X_UPLEFT}
+SDLK_GP2X_LEFT = 2;
+{$EXTERNALSYM SDLK_GP2X_LEFT}
+SDLK_GP2X_DOWNLEFT = 3;
+{$EXTERNALSYM SDLK_GP2X_DOWNLEFT}
+SDLK_GP2X_DOWN = 4;
+{$EXTERNALSYM SDLK_GP2X_DOWN}
+SDLK_GP2X_DOWNRIGHT = 5;
+{$EXTERNALSYM SDLK_GP2X_DOWNRIGHT}
+SDLK_GP2X_RIGHT = 6;
+{$EXTERNALSYM SDLK_GP2X_RIGHT}
+SDLK_GP2X_UPRIGHT = 7;
+{$EXTERNALSYM SDLK_GP2X_UPRIGHT}
+SDLK_GP2X_START = 8;
+{$EXTERNALSYM SDLK_GP2X_START}
+SDLK_GP2X_SELECT = 9;
+{$EXTERNALSYM SDLK_GP2X_SELECT}
+SDLK_GP2X_L = 10;
+{$EXTERNALSYM SDLK_GP2X_L}
+SDLK_GP2X_R = 11;
+{$EXTERNALSYM SDLK_GP2X_R}
+SDLK_GP2X_A = 12;
+{$EXTERNALSYM SDLK_GP2X_A}
+SDLK_GP2X_B = 13;
+{$EXTERNALSYM SDLK_GP2X_B}
+SDLK_GP2X_Y = 14;
+{$EXTERNALSYM SDLK_GP2X_Y}
+SDLK_GP2X_X = 15;
+{$EXTERNALSYM SDLK_GP2X_X}
+SDLK_GP2X_VOLUP = 16;
+{$EXTERNALSYM SDLK_GP2X_VOLUP}
+SDLK_GP2X_VOLDOWN = 17;
+{$EXTERNALSYM SDLK_GP2X_VOLDOWN}
+SDLK_GP2X_CLICK = 18;
+{$EXTERNALSYM SDLK_GP2X_CLICK}
+{$ENDIF}
+
+  // Enumeration of valid key mods (possibly OR'd together)
+  KMOD_NONE = $0000;
+{$EXTERNALSYM KMOD_NONE}
+  KMOD_LSHIFT = $0001;
+{$EXTERNALSYM KMOD_LSHIFT}
+  KMOD_RSHIFT = $0002;
+{$EXTERNALSYM KMOD_RSHIFT}
+  KMOD_LCTRL = $0040;
+{$EXTERNALSYM KMOD_LCTRL}
+  KMOD_RCTRL = $0080;
+{$EXTERNALSYM KMOD_RCTRL}
+  KMOD_LALT = $0100;
+{$EXTERNALSYM KMOD_LALT}
+  KMOD_RALT = $0200;
+{$EXTERNALSYM KMOD_RALT}
+  KMOD_LMETA = $0400;
+{$EXTERNALSYM KMOD_LMETA}
+  KMOD_RMETA = $0800;
+{$EXTERNALSYM KMOD_RMETA}
+  KMOD_NUM = $1000;
+{$EXTERNALSYM KMOD_NUM}
+  KMOD_CAPS = $2000;
+{$EXTERNALSYM KMOD_CAPS}
+  KMOD_MODE = 44000;
+{$EXTERNALSYM KMOD_MODE}
+  KMOD_RESERVED = $8000;
+{$EXTERNALSYM KMOD_RESERVED}
+
+  KMOD_CTRL = (KMOD_LCTRL or KMOD_RCTRL);
+{$EXTERNALSYM KMOD_CTRL}
+  KMOD_SHIFT = (KMOD_LSHIFT or KMOD_RSHIFT);
+{$EXTERNALSYM KMOD_SHIFT}
+  KMOD_ALT = (KMOD_LALT or KMOD_RALT);
+{$EXTERNALSYM KMOD_ALT}
+  KMOD_META = (KMOD_LMETA or KMOD_RMETA);
+{$EXTERNALSYM KMOD_META}
+
+  //SDL_video.h constants
+  // Transparency definitions: These define alpha as the opacity of a surface */
+  SDL_ALPHA_OPAQUE = 255;
+{$EXTERNALSYM SDL_ALPHA_OPAQUE}
+  SDL_ALPHA_TRANSPARENT = 0;
+{$EXTERNALSYM SDL_ALPHA_TRANSPARENT}
+
+  // These are the currently supported flags for the SDL_surface
+  // Available for SDL_CreateRGBSurface() or SDL_SetVideoMode()
+  SDL_SWSURFACE = $00000000; // Surface is in system memory
+{$EXTERNALSYM SDL_SWSURFACE}
+  SDL_HWSURFACE = $00000001; // Surface is in video memory
+{$EXTERNALSYM SDL_HWSURFACE}
+  SDL_ASYNCBLIT = $00000004; // Use asynchronous blits if possible
+{$EXTERNALSYM SDL_ASYNCBLIT}
+  // Available for SDL_SetVideoMode()
+  SDL_ANYFORMAT = $10000000; // Allow any video depth/pixel-format
+{$EXTERNALSYM SDL_ANYFORMAT}
+  SDL_HWPALETTE = $20000000; // Surface has exclusive palette
+{$EXTERNALSYM SDL_HWPALETTE}
+  SDL_DOUBLEBUF = $40000000; // Set up double-buffered video mode
+{$EXTERNALSYM SDL_DOUBLEBUF}
+  SDL_FULLSCREEN = $80000000; // Surface is a full screen display
+{$EXTERNALSYM SDL_FULLSCREEN}
+  SDL_OPENGL = $00000002; // Create an OpenGL rendering context
+{$EXTERNALSYM SDL_OPENGL}
+  SDL_OPENGLBLIT = $00000002; // Create an OpenGL rendering context
+{$EXTERNALSYM SDL_OPENGLBLIT}
+  SDL_RESIZABLE = $00000010; // This video mode may be resized
+{$EXTERNALSYM SDL_RESIZABLE}
+  SDL_NOFRAME = $00000020; // No window caption or edge frame
+{$EXTERNALSYM SDL_NOFRAME}
+  // Used internally (read-only)
+  SDL_HWACCEL = $00000100; // Blit uses hardware acceleration
+{$EXTERNALSYM SDL_HWACCEL}
+  SDL_SRCCOLORKEY = $00001000; // Blit uses a source color key
+{$EXTERNALSYM SDL_SRCCOLORKEY}
+  SDL_RLEACCELOK = $00002000; // Private flag
+{$EXTERNALSYM SDL_RLEACCELOK}
+  SDL_RLEACCEL = $00004000; // Colorkey blit is RLE accelerated
+{$EXTERNALSYM SDL_RLEACCEL}
+  SDL_SRCALPHA = $00010000; // Blit uses source alpha blending
+{$EXTERNALSYM SDL_SRCALPHA}
+  SDL_SRCCLIPPING = $00100000; // Blit uses source clipping
+{$EXTERNALSYM SDL_SRCCLIPPING}
+  SDL_PREALLOC = $01000000; // Surface uses preallocated memory
+{$EXTERNALSYM SDL_PREALLOC}
+
+  { The most common video overlay formats.
+    For an explanation of these pixel formats, see:
+    http://www.webartz.com/fourcc/indexyuv.htm
+
+   For information on the relationship between color spaces, see:
+   http://www.neuro.sfc.keio.ac.jp/~aly/polygon/info/color-space-faq.html }
+
+  SDL_YV12_OVERLAY = $32315659; // Planar mode: Y + V + U  (3 planes)
+{$EXTERNALSYM SDL_YV12_OVERLAY}
+  SDL_IYUV_OVERLAY = $56555949; // Planar mode: Y + U + V  (3 planes)
+{$EXTERNALSYM SDL_IYUV_OVERLAY}
+  SDL_YUY2_OVERLAY = $32595559; // Packed mode: Y0+U0+Y1+V0 (1 plane)
+{$EXTERNALSYM SDL_YUY2_OVERLAY}
+  SDL_UYVY_OVERLAY = $59565955; // Packed mode: U0+Y0+V0+Y1 (1 plane)
+{$EXTERNALSYM SDL_UYVY_OVERLAY}
+  SDL_YVYU_OVERLAY = $55595659; // Packed mode: Y0+V0+Y1+U0 (1 plane)
+{$EXTERNALSYM SDL_YVYU_OVERLAY}
+
+  // flags for SDL_SetPalette()
+  SDL_LOGPAL = $01;
+{$EXTERNALSYM SDL_LOGPAL}
+  SDL_PHYSPAL = $02;
+{$EXTERNALSYM SDL_PHYSPAL}
+
+  //SDL_mouse.h constants
+  { Used as a mask when testing buttons in buttonstate
+    Button 1:	Left mouse button
+    Button 2:	Middle mouse button
+    Button 3:	Right mouse button
+    Button 4:	Mouse Wheel Up (may also be a real button)
+    Button 5:	Mouse Wheel Down (may also be a real button)
+    Button 6:	Mouse X1 (may also be a real button)
+    Button 7:	Mouse X2 (may also be a real button)
+  }
+  SDL_BUTTON_LEFT      = 1;
+{$EXTERNALSYM SDL_BUTTON_LEFT}
+  SDL_BUTTON_MIDDLE    = 2;
+{$EXTERNALSYM SDL_BUTTON_MIDDLE}
+  SDL_BUTTON_RIGHT     = 3;
+{$EXTERNALSYM SDL_BUTTON_RIGHT}
+  SDL_BUTTON_WHEELUP   = 4;
+{$EXTERNALSYM SDL_BUTTON_WHEELUP}
+  SDL_BUTTON_WHEELDOWN = 5;
+{$EXTERNALSYM SDL_BUTTON_WHEELDOWN}
+  SDL_BUTTON_X1        = 6;
+{$EXTERNALSYM SDL_BUTTON_X1}
+  SDL_BUTTON_X2        = 7;
+{$EXTERNALSYM SDL_BUTTON_X2}
+
+  SDL_BUTTON_LMASK = SDL_PRESSED shl (SDL_BUTTON_LEFT - 1);
+{$EXTERNALSYM SDL_BUTTON_LMASK}
+  SDL_BUTTON_MMASK = SDL_PRESSED shl (SDL_BUTTON_MIDDLE - 1);
+{$EXTERNALSYM SDL_BUTTON_MMASK}
+  SDL_BUTTON_RMASK = SDL_PRESSED shl (SDL_BUTTON_RIGHT - 1);
+{$EXTERNALSYM SDL_BUTTON_RMASK}
+  SDL_BUTTON_X1MASK = SDL_PRESSED shl (SDL_BUTTON_X1 - 1);
+{$EXTERNALSYM SDL_BUTTON_X1MASK}
+  SDL_BUTTON_X2MASK = SDL_PRESSED shl (SDL_BUTTON_X2 - 1);
+{$EXTERNALSYM SDL_BUTTON_X2MASK}
+
+  // SDL_active.h constants
+  // The available application states
+  SDL_APPMOUSEFOCUS = $01; // The app has mouse coverage
+{$EXTERNALSYM SDL_APPMOUSEFOCUS}
+  SDL_APPINPUTFOCUS = $02; // The app has input focus
+{$EXTERNALSYM SDL_APPINPUTFOCUS}
+  SDL_APPACTIVE = $04; // The application is active
+{$EXTERNALSYM SDL_APPACTIVE}
+
+  // SDL_mutex.h constants
+  // Synchronization functions which can time out return this value
+  //  they time out.
+
+  SDL_MUTEX_TIMEDOUT = 1;
+{$EXTERNALSYM SDL_MUTEX_TIMEDOUT}
+
+  // This is the timeout value which corresponds to never time out
+  SDL_MUTEX_MAXWAIT = not Cardinal(0);
+{$EXTERNALSYM SDL_MUTEX_MAXWAIT}
+
+  {TSDL_GrabMode = (
+    SDL_GRAB_QUERY,
+    SDL_GRAB_OFF,
+    SDL_GRAB_ON,
+    SDL_GRAB_FULLSCREEN	); // Used internally}
+  SDL_GRAB_QUERY = -1;
+  SDL_GRAB_OFF   = 0;
+  SDL_GRAB_ON    = 1;
+  //SDL_GRAB_FULLSCREEN // Used internally
+
+type
+  THandle = Cardinal;
+  //SDL_types.h types
+  // Basic data types
+
+  SDL_Bool  = (SDL_FALSE, SDL_TRUE);
+  TSDL_Bool = SDL_Bool;
+
+  PUInt8Array = ^TUInt8Array;
+  PUInt8 = ^UInt8;
+  PPUInt8 = ^PUInt8;
+  UInt8 = Byte;
+{$EXTERNALSYM UInt8}
+  TUInt8Array = array [0..MAXINT shr 1] of UInt8;
+
+  PUInt16 = ^UInt16;
+  UInt16 = word;
+{$EXTERNALSYM UInt16}
+
+  PSInt8 = ^SInt8;
+  SInt8 = Shortint;
+{$EXTERNALSYM SInt8}
+
+  PSInt16 = ^SInt16;
+  SInt16 = smallint;
+{$EXTERNALSYM SInt16}
+
+  PUInt32 = ^UInt32;
+  UInt32 = Cardinal;
+{$EXTERNALSYM UInt32}
+
+  SInt32 = Integer;
+{$EXTERNALSYM SInt32}
+
+  PInt = ^Integer;
+
+  PShortInt = ^ShortInt;
+
+  PUInt64 = ^UInt64;
+  UInt64 = record
+    hi: UInt32;
+    lo: UInt32;
+  end;
+{$EXTERNALSYM UInt64}
+
+  PSInt64 = ^SInt64;
+  SInt64 = record
+    hi: UInt32;
+    lo: UInt32;
+  end;
+{$EXTERNALSYM SInt64}
+
+  TSDL_GrabMode = Integer;
+
+  // SDL_error.h types
+  TSDL_errorcode = (
+    SDL_ENOMEM,
+    SDL_EFREAD,
+    SDL_EFWRITE,
+    SDL_EFSEEK,
+    SDL_LASTERROR);
+
+  SDL_errorcode = TSDL_errorcode;
+{$EXTERNALSYM SDL_errorcode}
+
+  TArg = record
+    case Byte of
+      0: (value_ptr: Pointer);
+      (* #if 0 means: never
+      1 :  ( value_c : Byte );
+      *)
+      2: (value_i: Integer);
+      3: (value_f: double);
+      4: (buf: array[0..ERR_MAX_STRLEN - 1] of Byte);
+  end;
+
+  PSDL_error = ^TSDL_error;
+  TSDL_error = record
+    { This is a numeric value corresponding to the current error }
+    error: Integer;
+
+    { This is a key used to index into a language hashtable containing
+       internationalized versions of the SDL error messages.  If the key
+       is not in the hashtable, or no hashtable is available, the key is
+       used directly as an error message format string. }
+    key: array[0..ERR_MAX_STRLEN - 1] of Byte;
+
+    { These are the arguments for the error functions }
+    argc: Integer;
+    args: array[0..ERR_MAX_ARGS - 1] of TArg;
+  end;
+
+  // SDL_rwops.h types
+  // This is the read/write operation structure -- very basic
+  // some helper types to handle the unions
+  // "packed" is only guessed
+
+  TStdio = record
+    autoclose: Integer;
+   // FILE * is only defined in Kylix so we use a simple Pointer
+    fp: Pointer;
+  end;
+
+  TMem = record
+    base: PUInt8;
+    here: PUInt8;
+    stop: PUInt8;
+  end;
+
+  TUnknown = record
+    data1: Pointer;
+  end;
+
+  // first declare the pointer type
+  PSDL_RWops = ^TSDL_RWops;
+  // now the pointer to function types
+  {$IFNDEF __GPC__}
+  TSeek = function( context: PSDL_RWops; offset: Integer; whence: Integer ): Integer; cdecl;
+  TRead = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; maxnum : Integer ): Integer;  cdecl;
+  TWrite = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; num: Integer ): Integer; cdecl;
+  TClose = function( context: PSDL_RWops ): Integer; cdecl;
+  {$ELSE}
+  TSeek = function( context: PSDL_RWops; offset: Integer; whence: Integer ): Integer;
+  TRead = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; maxnum : Integer ): Integer;
+  TWrite = function( context: PSDL_RWops; Ptr: Pointer; size: Integer; num: Integer ): Integer;
+  TClose = function( context: PSDL_RWops ): Integer;
+  {$ENDIF}
+  // the variant record itself
+  TSDL_RWops = record
+    seek: TSeek;
+    read: TRead;
+    write: TWrite;
+    close: TClose;
+    // a keyword as name is not allowed
+    type_: UInt32;
+    // be warned! structure alignment may arise at this point
+    case Integer of
+      0: (stdio: TStdio);
+      1: (mem: TMem);
+      2: (unknown: TUnknown);
+  end;
+
+  SDL_RWops = TSDL_RWops;
+{$EXTERNALSYM SDL_RWops}
+
+
+  // SDL_timer.h types
+  // Function prototype for the timer callback function
+  {$IFNDEF __GPC__}
+  TSDL_TimerCallback = function( interval: UInt32 ): UInt32; cdecl;
+  {$ELSE}
+  TSDL_TimerCallback = function( interval: UInt32 ): UInt32;
+  {$ENDIF}
+
+ { New timer API, supports multiple timers
+   Written by Stephane Peter <megastep@lokigames.com> }
+
+ { Function prototype for the new timer callback function.
+   The callback function is passed the current timer interval and returns
+   the next timer interval.  If the returned value is the same as the one
+   passed in, the periodic alarm continues, otherwise a new alarm is
+   scheduled.  If the callback returns 0, the periodic alarm is cancelled. }
+  {$IFNDEF __GPC__}
+  TSDL_NewTimerCallback = function( interval: UInt32; param: Pointer ): UInt32; cdecl;
+  {$ELSE}
+  TSDL_NewTimerCallback = function( interval: UInt32; param: Pointer ): UInt32;
+  {$ENDIF}
+  
+  // Definition of the timer ID type
+  PSDL_TimerID = ^TSDL_TimerID;
+  TSDL_TimerID = record
+    interval: UInt32;
+    callback: TSDL_NewTimerCallback;
+    param: Pointer;
+    last_alarm: UInt32;
+    next: PSDL_TimerID;
+  end;
+
+  {$IFNDEF __GPC__}
+  TSDL_AudioSpecCallback = procedure( userdata: Pointer; stream: PUInt8; len: Integer ); cdecl;
+  {$ELSE}
+  TSDL_AudioSpecCallback = procedure( userdata: Pointer; stream: PUInt8; len: Integer );
+  {$ENDIF}
+
+  // SDL_audio.h types
+  // The calculated values in this structure are calculated by SDL_OpenAudio()
+  PSDL_AudioSpec = ^TSDL_AudioSpec;
+  TSDL_AudioSpec = record
+    freq: Integer; // DSP frequency -- samples per second
+    format: UInt16; // Audio data format
+    channels: UInt8; // Number of channels: 1 mono, 2 stereo
+    silence: UInt8; // Audio buffer silence value (calculated)
+    samples: UInt16; // Audio buffer size in samples
+    padding: UInt16; // Necessary for some compile environments
+    size: UInt32; // Audio buffer size in bytes (calculated)
+    { This function is called when the audio device needs more data.
+      'stream' is a pointer to the audio data buffer
+      'len' is the length of that buffer in bytes.
+      Once the callback returns, the buffer will no longer be valid.
+      Stereo samples are stored in a LRLRLR ordering.}
+    callback: TSDL_AudioSpecCallback;
+    userdata: Pointer;
+  end;
+
+  // A structure to hold a set of audio conversion filters and buffers
+  PSDL_AudioCVT = ^TSDL_AudioCVT;
+
+  PSDL_AudioCVTFilter = ^TSDL_AudioCVTFilter;
+  TSDL_AudioCVTFilter = record
+    cvt: PSDL_AudioCVT;
+    format: UInt16;
+  end;
+
+  PSDL_AudioCVTFilterArray = ^TSDL_AudioCVTFilterArray;
+  TSDL_AudioCVTFilterArray = array[0..9] of PSDL_AudioCVTFilter;
+
+  TSDL_AudioCVT = record
+    needed: Integer; // Set to 1 if conversion possible
+    src_format: UInt16; // Source audio format
+    dst_format: UInt16; // Target audio format
+    rate_incr: double; // Rate conversion increment
+    buf: PUInt8; // Buffer to hold entire audio data
+    len: Integer; // Length of original audio buffer
+    len_cvt: Integer; // Length of converted audio buffer
+    len_mult: Integer; // buffer must be len*len_mult big
+    len_ratio: double; // Given len, final size is len*len_ratio
+    filters: TSDL_AudioCVTFilterArray;
+    filter_index: Integer; // Current audio conversion function
+  end;
+
+  TSDL_Audiostatus = (
+    SDL_AUDIO_STOPPED,
+    SDL_AUDIO_PLAYING,
+    SDL_AUDIO_PAUSED
+    );
+
+  // SDL_cdrom.h types
+  TSDL_CDStatus = (
+    CD_ERROR,
+    CD_TRAYEMPTY,
+    CD_STOPPED,
+    CD_PLAYING,
+    CD_PAUSED );
+
+  PSDL_CDTrack = ^TSDL_CDTrack;
+  TSDL_CDTrack = record
+    id: UInt8; // Track number
+    type_: UInt8; // Data or audio track
+    unused: UInt16;
+    length: UInt32; // Length, in frames, of this track
+    offset: UInt32; // Offset, in frames, from start of disk
+  end;
+
+  // This structure is only current as of the last call to SDL_CDStatus()
+  PSDL_CD = ^TSDL_CD;
+  TSDL_CD = record
+    id: Integer; // Private drive identifier
+    status: TSDL_CDStatus; // Current drive status
+
+    // The rest of this structure is only valid if there's a CD in drive
+    numtracks: Integer; // Number of tracks on disk
+    cur_track: Integer; // Current track position
+    cur_frame: Integer; // Current frame offset within current track
+    track: array[0..SDL_MAX_TRACKS] of TSDL_CDTrack;
+  end;
+
+  //SDL_joystick.h types
+  PTransAxis = ^TTransAxis;
+  TTransAxis = record
+    offset: Integer;
+    scale: single;
+  end;
+
+  // The private structure used to keep track of a joystick
+  PJoystick_hwdata = ^TJoystick_hwdata;
+  TJoystick_hwdata = record
+    // joystick ID
+    id: Integer;
+    // values used to translate device-specific coordinates into  SDL-standard ranges
+    transaxis: array[0..5] of TTransAxis;
+  end;
+
+  PBallDelta = ^TBallDelta;
+  TBallDelta = record
+    dx: Integer;
+    dy: Integer;
+  end; // Current ball motion deltas
+
+  // The SDL joystick structure
+  PSDL_Joystick = ^TSDL_Joystick;
+  TSDL_Joystick = record
+    index: UInt8; // Device index
+    name: PChar; // Joystick name - system dependent
+
+    naxes: Integer; // Number of axis controls on the joystick
+    axes: PUInt16; // Current axis states
+
+    nhats: Integer; // Number of hats on the joystick
+    hats: PUInt8; // Current hat states
+
+    nballs: Integer; // Number of trackballs on the joystick
+    balls: PBallDelta; // Current ball motion deltas
+
+    nbuttons: Integer; // Number of buttons on the joystick
+    buttons: PUInt8; // Current button states
+
+    hwdata: PJoystick_hwdata; // Driver dependent information
+
+    ref_count: Integer; // Reference count for multiple opens
+  end;
+
+  // SDL_verion.h types
+  PSDL_version = ^TSDL_version;
+  TSDL_version = record
+    major: UInt8;
+    minor: UInt8;
+    patch: UInt8;
+  end;
+
+  // SDL_keyboard.h types
+  TSDLKey = LongWord;
+
+  TSDLMod = LongWord;
+
+  PSDL_KeySym = ^TSDL_KeySym;
+  TSDL_KeySym = record
+    scancode: UInt8; // hardware specific scancode
+    sym: TSDLKey; // SDL virtual keysym
+    modifier: TSDLMod; // current key modifiers
+    unicode: UInt16; // translated character
+  end;
+
+  // SDL_events.h types
+  {Checks the event queue for messages and optionally returns them.
+   If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to
+   the back of the event queue.
+   If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front
+   of the event queue, matching 'mask', will be returned and will not
+   be removed from the queue.
+   If 'action' is SDL_GETEVENT, up to 'numevents' events at the front
+   of the event queue, matching 'mask', will be returned and will be
+   removed from the queue.
+   This function returns the number of events actually stored, or -1
+   if there was an error.  This function is thread-safe. }
+
+  TSDL_EventAction = (SDL_ADDEVENT, SDL_PEEKEVENT, SDL_GETEVENT);
+
+  // Application visibility event structure
+  TSDL_ActiveEvent = record
+    type_: UInt8; // SDL_ACTIVEEVENT
+    gain: UInt8; // Whether given states were gained or lost (1/0)
+    state: UInt8; // A mask of the focus states
+  end;
+
+  // Keyboard event structure
+  TSDL_KeyboardEvent = record
+    type_: UInt8; // SDL_KEYDOWN or SDL_KEYUP
+    which: UInt8; // The keyboard device index
+    state: UInt8; // SDL_PRESSED or SDL_RELEASED
+    keysym: TSDL_KeySym;
+  end;
+
+  // Mouse motion event structure
+  TSDL_MouseMotionEvent = record
+    type_: UInt8; // SDL_MOUSEMOTION
+    which: UInt8; // The mouse device index
+    state: UInt8; // The current button state
+    x, y: UInt16; // The X/Y coordinates of the mouse
+    xrel: SInt16; // The relative motion in the X direction
+    yrel: SInt16; // The relative motion in the Y direction
+  end;
+
+  // Mouse button event structure
+  TSDL_MouseButtonEvent = record
+    type_: UInt8;  // SDL_MOUSEBUTTONDOWN or SDL_MOUSEBUTTONUP
+    which: UInt8;  // The mouse device index
+    button: UInt8; // The mouse button index
+    state: UInt8;  // SDL_PRESSED or SDL_RELEASED
+    x: UInt16;     // The X coordinates of the mouse at press time
+    y: UInt16;     // The Y coordinates of the mouse at press time
+  end;
+
+  // Joystick axis motion event structure
+  TSDL_JoyAxisEvent = record
+    type_: UInt8; // SDL_JOYAXISMOTION
+    which: UInt8; // The joystick device index
+    axis: UInt8; // The joystick axis index
+    value: SInt16; // The axis value (range: -32768 to 32767)
+  end;
+
+  // Joystick trackball motion event structure
+  TSDL_JoyBallEvent = record
+    type_: UInt8; // SDL_JOYAVBALLMOTION
+    which: UInt8; // The joystick device index
+    ball: UInt8; // The joystick trackball index
+    xrel: SInt16; // The relative motion in the X direction
+    yrel: SInt16; // The relative motion in the Y direction
+  end;
+
+  // Joystick hat position change event structure
+  TSDL_JoyHatEvent = record
+    type_: UInt8; // SDL_JOYHATMOTION */
+    which: UInt8; // The joystick device index */
+    hat: UInt8; // The joystick hat index */
+    value: UInt8; { The hat position value:
+                    8   1   2
+                    7   0   3
+                    6   5   4
+
+                    Note that zero means the POV is centered. }
+
+  end;
+
+  // Joystick button event structure
+  TSDL_JoyButtonEvent = record
+    type_: UInt8; // SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP
+    which: UInt8; // The joystick device index
+    button: UInt8; // The joystick button index
+    state: UInt8; // SDL_PRESSED or SDL_RELEASED
+  end;
+
+  { The "window resized" event
+    When you get this event, you are responsible for setting a new video
+    mode with the new width and height. }
+  TSDL_ResizeEvent = record
+    type_: UInt8; // SDL_VIDEORESIZE
+    w: Integer; // New width
+    h: Integer; // New height
+  end;
+
+  // The "quit requested" event
+  PSDL_QuitEvent = ^TSDL_QuitEvent;
+  TSDL_QuitEvent = record
+    type_: UInt8;
+  end;
+
+  // A user-defined event type
+  PSDL_UserEvent = ^TSDL_UserEvent;
+  TSDL_UserEvent = record
+    type_: UInt8; // SDL_USEREVENT through SDL_NUMEVENTS-1
+    code: Integer; // User defined event code */
+    data1: Pointer; // User defined data pointer */
+    data2: Pointer; // User defined data pointer */
+  end;
+
+  // The "screen redraw" event
+  PSDL_ExposeEvent = ^TSDL_ExposeEvent;
+  TSDL_ExposeEvent = record
+    type_ : Uint8;        // SDL_VIDEOEXPOSE
+  end;
+
+ {$IFDEF Unix}
+ //These are the various supported subsystems under UNIX
+  TSDL_SysWm = ( SDL_SYSWM_X11 ) ;
+ {$ENDIF}
+
+// The windows custom event structure
+{$IFDEF WINDOWS}
+  PSDL_SysWMmsg = ^TSDL_SysWMmsg;
+  TSDL_SysWMmsg = record
+    version: TSDL_version;
+    h_wnd: HWND; // The window for the message
+    msg: UInt; // The type of message
+    w_Param: WPARAM; // WORD message parameter
+    lParam: LPARAM; // LONG message parameter
+  end;
+{$ELSE}
+
+{$IFDEF Unix}
+{ The Linux custom event structure }
+  PSDL_SysWMmsg = ^TSDL_SysWMmsg;
+  TSDL_SysWMmsg = record
+    version : TSDL_version;
+    subsystem : TSDL_SysWm;
+    {$IFDEF FPC}
+    {$IFNDEF GP2X}
+    {$IFNDEF DARWIN}
+    {$IFNDEF SKYOS}
+    event : TXEvent;
+    {$ENDIF}
+    {$ENDIF}
+    {$ENDIF}
+    {$ELSE}
+    event : XEvent;
+    {$ENDIF}
+  end;
+{$ELSE}
+{ The generic custom event structure }
+  PSDL_SysWMmsg = ^TSDL_SysWMmsg;
+  TSDL_SysWMmsg = record
+    version: TSDL_version;
+    data: Integer;
+  end;
+{$ENDIF}
+
+{$ENDIF}
+
+// The Windows custom window manager information structure
+{$IFDEF WINDOWS}
+  PSDL_SysWMinfo = ^TSDL_SysWMinfo;
+  TSDL_SysWMinfo = record
+    version : TSDL_version;
+    window : HWnd;	// The display window
+  end;
+{$ELSE}
+
+// The Linux custom window manager information structure
+{$IFDEF Unix}
+  {$IFNDEF GP2X}
+  {$IFNDEF DARWIN}
+  {$IFNDEF SKYOS}
+  TX11 = record
+    display : PDisplay;	// The X11 display
+    window : TWindow ;		// The X11 display window */
+    {* These locking functions should be called around
+       any X11 functions using the display variable.
+       They lock the event thread, so should not be
+       called around event functions or from event filters.
+     *}
+    lock_func : Pointer;
+    unlock_func : Pointer;
+
+    // Introduced in SDL 1.0.2
+    fswindow : TWindow ;	// The X11 fullscreen window */
+    wmwindow : TWindow ;	// The X11 managed input window */
+  end;
+  {$ENDIF}
+  {$ENDIF}
+  {$ENDIF}
+  
+  PSDL_SysWMinfo = ^TSDL_SysWMinfo;
+  TSDL_SysWMinfo = record
+     version : TSDL_version ;
+     subsystem : TSDL_SysWm;
+     {$IFNDEF GP2X}
+     {$IFNDEF DARWIN}
+     {$IFNDEF SKYOS}
+     X11 : TX11;
+     {$ENDIF}
+     {$ENDIF}
+     {$ENDIF}
+  end;
+{$ELSE}
+  // The generic custom window manager information structure
+  PSDL_SysWMinfo = ^TSDL_SysWMinfo;
+  TSDL_SysWMinfo = record
+    version : TSDL_version ;
+    data : integer;
+  end;
+{$ENDIF}
+
+{$ENDIF}
+
+  PSDL_SysWMEvent = ^TSDL_SysWMEvent;
+  TSDL_SysWMEvent = record
+    type_: UInt8;
+    msg: PSDL_SysWMmsg;
+  end;
+
+  PSDL_Event = ^TSDL_Event;
+  TSDL_Event = record
+    case UInt8 of
+      SDL_NOEVENT: (type_: byte);
+      SDL_ACTIVEEVENT: (active: TSDL_ActiveEvent);
+      SDL_KEYDOWN, SDL_KEYUP: (key: TSDL_KeyboardEvent);
+      SDL_MOUSEMOTION: (motion: TSDL_MouseMotionEvent);
+      SDL_MOUSEBUTTONDOWN, SDL_MOUSEBUTTONUP: (button: TSDL_MouseButtonEvent );
+      SDL_JOYAXISMOTION: (jaxis: TSDL_JoyAxisEvent );
+      SDL_JOYBALLMOTION: (jball: TSDL_JoyBallEvent );
+      SDL_JOYHATMOTION: (jhat: TSDL_JoyHatEvent );
+      SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP: (jbutton: TSDL_JoyButtonEvent );
+      SDL_VIDEORESIZE: (resize: TSDL_ResizeEvent );
+      SDL_QUITEV: (quit: TSDL_QuitEvent );
+      SDL_USEREVENT : ( user : TSDL_UserEvent );
+      SDL_SYSWMEVENT: (syswm: TSDL_SysWMEvent );
+  end;
+
+
+{ This function sets up a filter to process all events before they
+  change internal state and are posted to the internal event queue.
+
+  The filter is protypted as: }
+  {$IFNDEF __GPC__}
+  TSDL_EventFilter = function( event : PSDL_Event ): Integer; cdecl;
+  {$ELSE}
+  TSDL_EventFilter = function( event : PSDL_Event ): Integer;
+  {$ENDIF}
+
+  // SDL_video.h types
+  // Useful data types
+  PPSDL_Rect = ^PSDL_Rect;
+  PSDL_Rect = ^TSDL_Rect;
+  TSDL_Rect = record
+    x, y: SInt16;
+    w, h: UInt16;
+  end;
+
+  SDL_Rect = TSDL_Rect;
+{$EXTERNALSYM SDL_Rect}
+
+  PSDL_Color = ^TSDL_Color;
+  TSDL_Color = record
+    r: UInt8;
+    g: UInt8;
+    b: UInt8;
+    unused: UInt8;
+  end;
+
+  PSDL_ColorArray = ^TSDL_ColorArray;
+  TSDL_ColorArray = array[0..65000] of TSDL_Color;
+
+  PSDL_Palette = ^TSDL_Palette;
+  TSDL_Palette = record
+    ncolors: Integer;
+    colors: PSDL_ColorArray;
+  end;
+
+  // Everything in the pixel format structure is read-only
+  PSDL_PixelFormat = ^TSDL_PixelFormat;
+  TSDL_PixelFormat = record
+    palette: PSDL_Palette;
+    BitsPerPixel: UInt8;
+    BytesPerPixel: UInt8;
+    Rloss: UInt8;
+    Gloss: UInt8;
+    Bloss: UInt8;
+    Aloss: UInt8;
+    Rshift: UInt8;
+    Gshift: UInt8;
+    Bshift: UInt8;
+    Ashift: UInt8;
+    RMask: UInt32;
+    GMask: UInt32;
+    BMask: UInt32;
+    AMask: UInt32;
+    colorkey: UInt32; // RGB color key information
+    alpha: UInt8; // Alpha value information (per-surface alpha)
+  end;
+
+{$IFDEF WINDOWS}
+  {PPrivate_hwdata = ^TPrivate_hwdata;
+  TPrivate_hwdata = record
+    dd_surface : IDIRECTDRAWSURFACE3;
+    dd_writebuf : IDIRECTDRAWSURFACE3;
+  end;}
+  {ELSE}
+{$ENDIF}
+
+  // The structure passed to the low level blit functions
+  PSDL_BlitInfo = ^TSDL_BlitInfo;
+  TSDL_BlitInfo = record
+    s_pixels: PUInt8;
+    s_width: Integer;
+    s_height: Integer;
+    s_skip: Integer;
+    d_pixels: PUInt8;
+    d_width: Integer;
+    d_height: Integer;
+    d_skip: Integer;
+    aux_data: Pointer;
+    src: PSDL_PixelFormat;
+    table: PUInt8;
+    dst: PSDL_PixelFormat;
+  end;
+
+  // typedef for private surface blitting functions
+  PSDL_Surface = ^TSDL_Surface;
+
+  {$IFNDEF __GPC__}
+  TSDL_Blit = function( src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect ): Integer; cdecl;
+  {$ELSE}
+  TSDL_Blit = function( src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect ): Integer;
+  {$ENDIF}
+
+  // The type definition for the low level blit functions
+  //TSDL_LoBlit = procedure( info : PSDL_BlitInfo ); cdecl;
+
+  // This is the private info structure for software accelerated blits
+  {PPrivate_swaccel = ^TPrivate_swaccel;
+  TPrivate_swaccel = record
+    blit : TSDL_LoBlit;
+    aux_data : Pointer;
+  end;}
+
+  // Blit mapping definition
+  {PSDL_BlitMap = ^TSDL_BlitMap;
+  TSDL_BlitMap = record
+    dst : PSDL_Surface;
+    identity : Integer;
+    table : PUInt8;
+    hw_blit : TSDL_Blit;
+    sw_blit : TSDL_Blit;
+    hw_data : PPrivate_hwaccel;
+    sw_data : PPrivate_swaccel;
+
+    // the version count matches the destination; mismatch indicates an invalid mapping
+    format_version : Cardinal;
+  end;}
+
+  TSDL_Surface = record
+    flags: UInt32; // Read-only
+    format: PSDL_PixelFormat; // Read-only
+    w, h: Integer; // Read-only
+    pitch: UInt16; // Read-only
+    pixels: Pointer; // Read-write
+    offset: Integer; // Private
+    hwdata: Pointer; //TPrivate_hwdata;  Hardware-specific surface info
+
+    // clipping information:
+    clip_rect: TSDL_Rect; // Read-only
+    unused1: UInt32; // for binary compatibility
+    // Allow recursive locks
+    locked: UInt32; // Private
+    // info for fast blit mapping to other surfaces
+    Blitmap: Pointer; // PSDL_BlitMap; //   Private
+    // format version, bumped at every change to invalidate blit maps
+    format_version: Cardinal; // Private
+    refcount: Integer;
+  end;
+
+  // Useful for determining the video hardware capabilities
+  PSDL_VideoInfo = ^TSDL_VideoInfo;
+  TSDL_VideoInfo = record
+    hw_available: UInt8; // Hardware and WindowManager flags in first 2 bits ( see below )
+    {hw_available: 1; // Can you create hardware surfaces
+    wm_available: 1; // Can you talk to a window manager?
+    UnusedBits1: 6;}
+    blit_hw: UInt8; // Blit Hardware flags. See below for which bits do what
+    {UnusedBits2: 1;
+    blit_hw: 1; // Flag:UInt32  Accelerated blits HW --> HW
+    blit_hw_CC: 1; // Flag:UInt32  Accelerated blits with Colorkey
+    blit_hw_A: 1; // Flag:UInt32  Accelerated blits with Alpha
+    blit_sw: 1; // Flag:UInt32  Accelerated blits SW --> HW
+    blit_sw_CC: 1; // Flag:UInt32  Accelerated blits with Colorkey
+    blit_sw_A: 1; // Flag:UInt32  Accelerated blits with Alpha
+    blit_fill: 1; // Flag:UInt32  Accelerated color fill}
+    UnusedBits3: UInt8; // Unused at this point
+    video_mem: UInt32; // The total amount of video memory (in K)
+    vfmt: PSDL_PixelFormat; // Value: The format of the video surface
+    current_w : SInt32;	// Value: The current video mode width
+	  current_h : SInt32;	// Value: The current video mode height
+  end;
+
+  // The YUV hardware video overlay
+  PSDL_Overlay = ^TSDL_Overlay;
+  TSDL_Overlay = record
+    format: UInt32; // Overlay format
+    w, h: Integer; // Width and height of overlay
+    planes: Integer; // Number of planes in the overlay. Usually either 1 or 3
+    pitches: PUInt16;
+      // An array of pitches, one for each plane. Pitch is the length of a row in bytes.
+    pixels: PPUInt8;
+      // An array of pointers to the data of each plane. The overlay should be locked before these pointers are used.
+    hw_overlay: UInt32;
+      // This will be set to 1 if the overlay is hardware accelerated.
+  end;
+
+  // Public enumeration for setting the OpenGL window attributes.
+  TSDL_GLAttr = (
+    SDL_GL_RED_SIZE,
+    SDL_GL_GREEN_SIZE,
+    SDL_GL_BLUE_SIZE,
+    SDL_GL_ALPHA_SIZE,
+    SDL_GL_BUFFER_SIZE,
+    SDL_GL_DOUBLEBUFFER,
+    SDL_GL_DEPTH_SIZE,
+    SDL_GL_STENCIL_SIZE,
+    SDL_GL_ACCUM_RED_SIZE,
+    SDL_GL_ACCUM_GREEN_SIZE,
+    SDL_GL_ACCUM_BLUE_SIZE,
+    SDL_GL_ACCUM_ALPHA_SIZE,
+    SDL_GL_STEREO,
+    SDL_GL_MULTISAMPLEBUFFERS,
+    SDL_GL_MULTISAMPLESAMPLES,
+    SDL_GL_ACCELERATED_VISUAL,
+    SDL_GL_SWAP_CONTROL);
+
+
+
+  PSDL_Cursor = ^TSDL_Cursor;
+  TSDL_Cursor = record
+    area: TSDL_Rect; // The area of the mouse cursor
+    hot_x, hot_y: SInt16; // The "tip" of the cursor
+    data: PUInt8; // B/W cursor data
+    mask: PUInt8; // B/W cursor mask
+    save: array[1..2] of PUInt8; // Place to save cursor area
+    wm_cursor: Pointer; // Window-manager cursor
+  end;
+
+// SDL_mutex.h types
+
+{$IFDEF WINDOWS}
+  PSDL_Mutex = ^TSDL_Mutex;
+  TSDL_Mutex = record
+    id: THANDLE;
+  end;
+{$ENDIF}
+
+{$IFDEF Unix}
+  PSDL_Mutex = ^TSDL_Mutex;
+  TSDL_mutex = record
+    id: pthread_mutex_t;
+{$IFDEF PTHREAD_NO_RECURSIVE_MUTEX}
+    recursive: Integer;
+    owner: pthread_t;
+{$ENDIF}
+  end;
+{$ENDIF}
+
+{$IFDEF NDS}
+  PSDL_mutex = ^TSDL_Mutex;
+  TSDL_Mutex = record
+    recursive: Integer;
+    Owner: UInt32;
+    sem: PSDL_sem;
+  end;
+{$ENDIF}
+
+{$IFDEF __MACH__}
+  {$define USE_NAMED_SEMAPHORES}
+  // Broken sem_getvalue() in MacOS X Public Beta */
+  {$define BROKEN_SEMGETVALUE}
+{$ENDIF}
+
+PSDL_semaphore = ^TSDL_semaphore;
+{$IFDEF WINDOWS}
+  // WINDOWS or Machintosh
+  TSDL_semaphore = record
+    id: THANDLE;
+    count: UInt32;
+  end;
+{$ELSE}
+  {$IFDEF FPC}
+  // This should be semaphore.h 
+  __sem_lock_t = {packed} record { Not in header file - anonymous }
+    status: Longint;
+    spinlock: Integer;
+  end;
+
+  sem_t = {packed} record
+    __sem_lock: __sem_lock_t;
+    __sem_value: Integer;
+    __sem_waiting: longint ; {_pthread_queue;}
+  end;
+  {$ENDIF}
+  
+  TSDL_semaphore = record
+    sem: Pointer; //PSem_t;
+  {$IFNDEF USE_NAMED_SEMAPHORES}
+    sem_data: Sem_t;
+  {$ENDIF}
+
+  {$IFDEF BROKEN_SEMGETVALUE}
+    { This is a little hack for MacOS X -
+      It's not thread-safe, but it's better than nothing }
+    sem_value: Integer;
+  {$ENDIF}
+  end;
+{$ENDIF}
+
+  PSDL_Sem = ^TSDL_Sem;
+  TSDL_Sem = TSDL_Semaphore;
+
+  PSDL_Cond = ^TSDL_Cond;
+  TSDL_Cond = record
+{$IFDEF Unix}
+    cond: pthread_cond_t;
+{$ELSE}
+    // Generic Cond structure
+    lock: PSDL_mutex;
+    waiting: Integer;
+    signals: Integer;
+    wait_sem: PSDL_Sem;
+    wait_done: PSDL_Sem;
+{$ENDIF}
+  end;
+
+  // SDL_thread.h types
+{$IFDEF WINDOWS}
+  TSYS_ThreadHandle = THandle;
+{$ENDIF}
+
+{$IFDEF Unix}
+  TSYS_ThreadHandle = pthread_t;
+{$ENDIF}
+
+{$IFDEF NDS}
+  TSYS_ThreadHandle = Integer;
+{$ENDIF}
+
+  { This is the system-independent thread info structure }
+  PSDL_Thread = ^TSDL_Thread;
+  TSDL_Thread = record
+    threadid: UInt32;
+    handle: TSYS_ThreadHandle;
+    status: Integer;
+    errbuf: TSDL_Error;
+    data: Pointer;
+  end;
+
+  // Helper Types
+
+  // Keyboard  State Array ( See demos for how to use )
+  PKeyStateArr = ^TKeyStateArr;
+  TKeyStateArr = array[0..65000] of UInt8;
+
+  // Types required so we don't need to use Windows.pas
+  PInteger = ^Integer;
+  PByte = ^Byte;
+  PWord = ^Word;
+  PLongWord = ^Longword;
+
+  // General arrays
+  PByteArray = ^TByteArray;
+  TByteArray = array[0..32767] of Byte;
+
+  PWordArray = ^TWordArray;
+  TWordArray = array[0..16383] of Word;
+
+  PPoint = ^TPoint;
+  {$IFDEF HAS_TYPES}
+  TPoint = Types.TPoint;
+  {$ELSE}
+    {$IFDEF WINDOWS}
+      {$IFDEF __GPC__}
+      TPoint = wintypes.TPoint;
+      {$ELSE}
+      TPoint = Windows.TPoint;
+      {$ENDIF}
+    {$ELSE}
+      //Can't define TPoint : neither Types nor Windows unit available.
+    {$ENDIF}
+  {$ENDIF}
+
+  PRect = ^TRect;
+  {$IFDEF HAS_TYPES}
+  TRect = Types.TRect;
+  {$ELSE}
+    {$IFDEF WINDOWS}
+      {$IFDEF __GPC__}
+      TRect = wintypes.TRect;
+      {$ELSE}
+      TRect = Windows.TRect;
+      {$ENDIF}
+    {$ELSE}
+      //Can't define TRect: neither Types nor Windows unit available.
+    {$ENDIF}
+  {$ENDIF}
+
+  { Generic procedure pointer }
+  TProcedure = procedure;
+
+{------------------------------------------------------------------------------}
+{ initialization                                                               }
+{------------------------------------------------------------------------------}
+
+{ This function loads the SDL dynamically linked library and initializes
+  the subsystems specified by 'flags' (and those satisfying dependencies)
+  Unless the SDL_INIT_NOPARACHUTE flag is set, it will install cleanup
+  signal handlers for some commonly ignored fatal signals (like SIGSEGV) }
+
+function SDL_Init( flags : UInt32 ) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Init'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Init}
+
+// This function initializes specific SDL subsystems
+function SDL_InitSubSystem( flags : UInt32 ) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_InitSubSystem'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_InitSubSystem}
+
+// This function cleans up specific SDL subsystems
+procedure SDL_QuitSubSystem( flags : UInt32 );
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_QuitSubSystem'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_QuitSubSystem}
+
+{ This function returns mask of the specified subsystems which have
+  been initialized.
+  If 'flags' is 0, it returns a mask of all initialized subsystems. }
+
+function SDL_WasInit( flags : UInt32 ): UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WasInit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WasInit}
+
+{ This function cleans up all initialized subsystems and unloads the
+  dynamically linked library.  You should call it upon all exit conditions. }
+procedure SDL_Quit;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Quit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Quit}
+
+{$IFDEF WINDOWS}
+// This should be called from your WinMain() function, if any
+function SDL_RegisterApp(name: PChar; style: UInt32; h_Inst: Pointer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RegisterApp'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RegisterApp}
+{$ENDIF}
+
+{$IFDEF __MACH__}
+// This should be called from your main() function, if any
+procedure SDL_InitQuickDraw( the_qd: QDGlobals );
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_InitQuickDraw'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_InitQuickDraw}
+{$ENDIF}
+
+
+{------------------------------------------------------------------------------}
+{ types }
+{------------------------------------------------------------------------------}
+// The number of elements in a table
+function SDL_TableSize( table: PChar ): Integer;
+{$EXTERNALSYM SDL_TABLESIZE}
+
+
+{------------------------------------------------------------------------------}
+{ error-handling }
+{------------------------------------------------------------------------------}
+// Public functions
+function SDL_GetError: PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetError'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetError}
+procedure SDL_SetError(fmt: PChar);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetError'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetError}
+procedure SDL_ClearError;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ClearError'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ClearError}
+
+{$IFNDEF WINDOWS}
+procedure SDL_Error(Code: TSDL_errorcode);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Error'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Error}
+{$ENDIF}
+
+// Private error message function - used internally
+procedure SDL_OutOfMemory;
+
+{------------------------------------------------------------------------------}
+{ io handling                                                                  }
+{------------------------------------------------------------------------------}
+// Functions to create SDL_RWops structures from various data sources
+
+function SDL_RWFromFile(filename, mode: PChar): PSDL_RWops;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RWFromFile'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RWFromFile}
+procedure SDL_FreeRW(area: PSDL_RWops);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FreeRW'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FreeRW}
+
+//fp is FILE *fp ???
+function SDL_RWFromFP(fp: Pointer; autoclose: Integer): PSDL_RWops;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RWFromFP'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RWFromFP}
+function SDL_RWFromMem(mem: Pointer; size: Integer): PSDL_RWops;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RWFromMem'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RWFromMem}
+function SDL_RWFromConstMem(const mem: Pointer; size: Integer) : PSDL_RWops;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RWFromConstMem'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RWFromConstMem}
+function SDL_AllocRW: PSDL_RWops;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_AllocRW'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_AllocRW}
+
+function SDL_RWSeek(context: PSDL_RWops; offset: Integer; whence: Integer) : Integer;
+{$EXTERNALSYM SDL_RWSeek}
+function SDL_RWTell(context: PSDL_RWops): Integer;
+{$EXTERNALSYM SDL_RWTell}
+function SDL_RWRead(context: PSDL_RWops; ptr: Pointer; size: Integer; n : Integer): Integer;
+{$EXTERNALSYM SDL_RWRead}
+function SDL_RWWrite(context: PSDL_RWops; ptr: Pointer; size: Integer; n : Integer): Integer;
+{$EXTERNALSYM SDL_RWWrite}
+function SDL_RWClose(context: PSDL_RWops): Integer;
+{$EXTERNALSYM SDL_RWClose}
+
+{------------------------------------------------------------------------------}
+{ time-handling                                                                }
+{------------------------------------------------------------------------------}
+
+{ Get the number of milliseconds since the SDL library initialization. }
+{ Note that this value wraps if the program runs for more than ~49 days. }
+function SDL_GetTicks: UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetTicks'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetTicks}
+
+// Wait a specified number of milliseconds before returning
+procedure SDL_Delay(msec: UInt32);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Delay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Delay}
+
+{ Add a new timer to the pool of timers already running. }
+{ Returns a timer ID, or NULL when an error occurs.      }
+function SDL_AddTimer(interval: UInt32; callback: TSDL_NewTimerCallback; param : Pointer): PSDL_TimerID;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_AddTimer'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_AddTimer}
+
+{ Remove one of the multiple timers knowing its ID. }
+{ Returns a boolean value indicating success. }
+function SDL_RemoveTimer(t: PSDL_TimerID): TSDL_Bool;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_RemoveTimer'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_RemoveTimer}
+
+function SDL_SetTimer(interval: UInt32; callback: TSDL_TimerCallback): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetTimer'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetTimer}
+
+{------------------------------------------------------------------------------}
+{ audio-routines                                                               }
+{------------------------------------------------------------------------------}
+
+{ These functions are used internally, and should not be used unless you
+  have a specific need to specify the audio driver you want to use.
+  You should normally use SDL_Init() or SDL_InitSubSystem(). }
+
+function SDL_AudioInit(driver_name: PChar): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_AudioInit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_AudioInit}
+procedure SDL_AudioQuit;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_AudioQuit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_AudioQuit}
+
+{ This function fills the given character buffer with the name of the
+  current audio driver, and returns a Pointer to it if the audio driver has
+  been initialized.  It returns NULL if no driver has been initialized. }
+
+function SDL_AudioDriverName(namebuf: PChar; maxlen: Integer): PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_AudioDriverName'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_AudioDriverName}
+
+{ This function opens the audio device with the desired parameters, and
+  returns 0 if successful, placing the actual hardware parameters in the
+  structure pointed to by 'obtained'.  If 'obtained' is NULL, the audio
+  data passed to the callback function will be guaranteed to be in the
+  requested format, and will be automatically converted to the hardware
+  audio format if necessary.  This function returns -1 if it failed
+  to open the audio device, or couldn't set up the audio thread.
+
+  When filling in the desired audio spec structure,
+   'desired->freq' should be the desired audio frequency in samples-per-second.
+   'desired->format' should be the desired audio format.
+   'desired->samples' is the desired size of the audio buffer, in samples.
+      This number should be a power of two, and may be adjusted by the audio
+      driver to a value more suitable for the hardware.  Good values seem to
+      range between 512 and 8096 inclusive, depending on the application and
+      CPU speed.  Smaller values yield faster response time, but can lead
+      to underflow if the application is doing heavy processing and cannot
+      fill the audio buffer in time.  A stereo sample consists of both right
+      and left channels in LR ordering.
+      Note that the number of samples is directly related to time by the
+      following formula:  ms = (samples*1000)/freq
+   'desired->size' is the size in bytes of the audio buffer, and is
+      calculated by SDL_OpenAudio().
+   'desired->silence' is the value used to set the buffer to silence,
+      and is calculated by SDL_OpenAudio().
+   'desired->callback' should be set to a function that will be called
+      when the audio device is ready for more data.  It is passed a pointer
+      to the audio buffer, and the length in bytes of the audio buffer.
+      This function usually runs in a separate thread, and so you should
+      protect data structures that it accesses by calling SDL_LockAudio()
+      and SDL_UnlockAudio() in your code.
+   'desired->userdata' is passed as the first parameter to your callback
+      function.
+
+  The audio device starts out playing silence when it's opened, and should
+  be enabled for playing by calling SDL_PauseAudio(0) when you are ready
+  for your audio callback function to be called.  Since the audio driver
+  may modify the requested size of the audio buffer, you should allocate
+  any local mixing buffers after you open the audio device. }
+
+function SDL_OpenAudio(desired, obtained: PSDL_AudioSpec): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_OpenAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_OpenAudio}
+
+{ Get the current audio state: }
+function SDL_GetAudioStatus: TSDL_Audiostatus;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetAudioStatus'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetAudioStatus}
+
+{ This function pauses and unpauses the audio callback processing.
+  It should be called with a parameter of 0 after opening the audio
+  device to start playing sound.  This is so you can safely initialize
+  data for your callback function after opening the audio device.
+  Silence will be written to the audio device during the pause. }
+
+procedure SDL_PauseAudio(pause_on: Integer);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_PauseAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_PauseAudio}
+
+{ This function loads a WAVE from the data source, automatically freeing
+  that source if 'freesrc' is non-zero.  For example, to load a WAVE file,
+  you could do:
+  SDL_LoadWAV_RW(SDL_RWFromFile("sample.wav", "rb"), 1, ...);
+
+  If this function succeeds, it returns the given SDL_AudioSpec,
+  filled with the audio data format of the wave data, and sets
+  'audio_buf' to a malloc()'d buffer containing the audio data,
+  and sets 'audio_len' to the length of that audio buffer, in bytes.
+  You need to free the audio buffer with SDL_FreeWAV() when you are
+  done with it.
+
+  This function returns NULL and sets the SDL error message if the
+  wave file cannot be opened, uses an unknown data format, or is
+  corrupt.  Currently raw and MS-ADPCM WAVE files are supported. }
+
+function SDL_LoadWAV_RW(src: PSDL_RWops; freesrc: Integer; spec:
+  PSDL_AudioSpec; audio_buf: PUInt8; audiolen: PUInt32): PSDL_AudioSpec;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LoadWAV_RW'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LoadWAV_RW}
+
+// Compatibility convenience function -- loads a WAV from a file
+function SDL_LoadWAV(filename: PChar; spec: PSDL_AudioSpec; audio_buf:
+  PUInt8; audiolen: PUInt32): PSDL_AudioSpec;
+{$EXTERNALSYM SDL_LoadWAV}
+
+{ This function frees data previously allocated with SDL_LoadWAV_RW() }
+
+procedure SDL_FreeWAV(audio_buf: PUInt8);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FreeWAV'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FreeWAV}
+
+{ This function takes a source format and rate and a destination format
+  and rate, and initializes the 'cvt' structure with information needed
+  by SDL_ConvertAudio() to convert a buffer of audio data from one format
+  to the other.
+  This function returns 0, or -1 if there was an error. }
+function SDL_BuildAudioCVT(cvt: PSDL_AudioCVT; src_format: UInt16;
+  src_channels: UInt8; src_rate: Integer; dst_format: UInt16; dst_channels: UInt8;
+  dst_rate: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_BuildAudioCVT'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_BuildAudioCVT}
+
+{ Once you have initialized the 'cvt' structure using SDL_BuildAudioCVT(),
+  created an audio buffer cvt->buf, and filled it with cvt->len bytes of
+  audio data in the source format, this function will convert it in-place
+  to the desired format.
+  The data conversion may expand the size of the audio data, so the buffer
+  cvt->buf should be allocated after the cvt structure is initialized by
+  SDL_BuildAudioCVT(), and should be cvt->len*cvt->len_mult bytes long. }
+function SDL_ConvertAudio(cvt: PSDL_AudioCVT): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ConvertAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ConvertAudio}
+
+{ This takes two audio buffers of the playing audio format and mixes
+  them, performing addition, volume adjustment, and overflow clipping.
+  The volume ranges from 0 - 128, and should be set to SDL_MIX_MAXVOLUME
+  for full audio volume.  Note this does not change hardware volume.
+  This is provided for convenience -- you can mix your own audio data. }
+
+procedure SDL_MixAudio(dst, src: PUInt8; len: UInt32; volume: Integer);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_MixAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_MixAudio}
+
+{ The lock manipulated by these functions protects the callback function.
+  During a LockAudio/UnlockAudio pair, you can be guaranteed that the
+  callback function is not running.  Do not call these from the callback
+  function or you will cause deadlock. }
+procedure SDL_LockAudio;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LockAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LockAudio}
+procedure SDL_UnlockAudio;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UnlockAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UnlockAudio}
+
+{ This function shuts down audio processing and closes the audio device. }
+
+procedure SDL_CloseAudio;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CloseAudio'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CloseAudio}
+
+{------------------------------------------------------------------------------}
+{ CD-routines }
+{------------------------------------------------------------------------------}
+
+{ Returns the number of CD-ROM drives on the system, or -1 if
+  SDL_Init() has not been called with the SDL_INIT_CDROM flag. }
+
+function SDL_CDNumDrives: Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDNumDrives'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDNumDrives}
+
+{ Returns a human-readable, system-dependent identifier for the CD-ROM.
+   Example:
+   "/dev/cdrom"
+   "E:"
+   "/dev/disk/ide/1/master" }
+
+function SDL_CDName(drive: Integer): PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDName'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDName}
+
+{ Opens a CD-ROM drive for access.  It returns a drive handle on success,
+  or NULL if the drive was invalid or busy.  This newly opened CD-ROM
+  becomes the default CD used when other CD functions are passed a NULL
+  CD-ROM handle.
+  Drives are numbered starting with 0.  Drive 0 is the system default CD-ROM. }
+
+function SDL_CDOpen(drive: Integer): PSDL_CD;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDOpen'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDOpen}
+
+{ This function returns the current status of the given drive.
+  If the drive has a CD in it, the table of contents of the CD and current
+  play position of the CD will be stored in the SDL_CD structure. }
+
+function SDL_CDStatus(cdrom: PSDL_CD): TSDL_CDStatus;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDStatus'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDStatus}
+
+{  Play the given CD starting at 'start_track' and 'start_frame' for 'ntracks'
+   tracks and 'nframes' frames.  If both 'ntrack' and 'nframe' are 0, play
+   until the end of the CD.  This function will skip data tracks.
+   This function should only be called after calling SDL_CDStatus() to
+   get track information about the CD.
+
+   For example:
+   // Play entire CD:
+  if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) then
+    SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);
+   // Play last track:
+   if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) then
+   begin
+    SDL_CDPlayTracks(cdrom, cdrom->numtracks-1, 0, 0, 0);
+   end;
+
+   // Play first and second track and 10 seconds of third track:
+   if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
+    SDL_CDPlayTracks(cdrom, 0, 0, 2, 10);
+
+   This function returns 0, or -1 if there was an error. }
+
+function SDL_CDPlayTracks(cdrom: PSDL_CD; start_track: Integer; start_frame:
+  Integer; ntracks: Integer; nframes: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDPlayTracks'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDPlayTracks}
+
+
+{  Play the given CD starting at 'start' frame for 'length' frames.
+   It returns 0, or -1 if there was an error. }
+
+function SDL_CDPlay(cdrom: PSDL_CD; start: Integer; length: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDPlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDPlay}
+
+// Pause play -- returns 0, or -1 on error
+function SDL_CDPause(cdrom: PSDL_CD): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDPause'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDPause}
+
+// Resume play -- returns 0, or -1 on error
+function SDL_CDResume(cdrom: PSDL_CD): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDResume'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDResume}
+
+// Stop play -- returns 0, or -1 on error
+function SDL_CDStop(cdrom: PSDL_CD): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDStop'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDStop}
+
+// Eject CD-ROM -- returns 0, or -1 on error
+function SDL_CDEject(cdrom: PSDL_CD): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDEject'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDEject}
+
+// Closes the handle for the CD-ROM drive
+procedure SDL_CDClose(cdrom: PSDL_CD);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CDClose'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CDClose}
+
+// Given a status, returns true if there's a disk in the drive
+function SDL_CDInDrive( status : TSDL_CDStatus ) : LongBool;
+{$EXTERNALSYM SDL_CDInDrive}
+
+// Conversion functions from frames to Minute/Second/Frames and vice versa
+procedure FRAMES_TO_MSF(frames: Integer; var M: Integer; var S: Integer; var
+  F: Integer);
+{$EXTERNALSYM FRAMES_TO_MSF}
+function MSF_TO_FRAMES(M: Integer; S: Integer; F: Integer): Integer;
+{$EXTERNALSYM MSF_TO_FRAMES}
+
+{------------------------------------------------------------------------------}
+{ JoyStick-routines                                                            }
+{------------------------------------------------------------------------------}
+
+{ Count the number of joysticks attached to the system }
+function SDL_NumJoysticks: Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_NumJoysticks'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_NumJoysticks}
+
+{ Get the implementation dependent name of a joystick.
+  This can be called before any joysticks are opened.
+  If no name can be found, this function returns NULL. }
+function SDL_JoystickName(index: Integer): PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickName'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickName}
+
+{ Open a joystick for use - the index passed as an argument refers to
+  the N'th joystick on the system.  This index is the value which will
+  identify this joystick in future joystick events.
+
+  This function returns a joystick identifier, or NULL if an error occurred. }
+function SDL_JoystickOpen(index: Integer): PSDL_Joystick;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickOpen'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickOpen}
+
+{ Returns 1 if the joystick has been opened, or 0 if it has not. }
+function SDL_JoystickOpened(index: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickOpened'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickOpened}
+
+{ Get the device index of an opened joystick. }
+function SDL_JoystickIndex(joystick: PSDL_Joystick): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickIndex'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickIndex}
+
+{ Get the number of general axis controls on a joystick }
+function SDL_JoystickNumAxes(joystick: PSDL_Joystick): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickNumAxes'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickNumAxes}
+
+{ Get the number of trackballs on a joystick
+  Joystick trackballs have only relative motion events associated
+  with them and their state cannot be polled. }
+function SDL_JoystickNumBalls(joystick: PSDL_Joystick): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickNumBalls'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickNumBalls}
+
+
+{ Get the number of POV hats on a joystick }
+function SDL_JoystickNumHats(joystick: PSDL_Joystick): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickNumHats'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickNumHats}
+
+{ Get the number of buttons on a joystick }
+function SDL_JoystickNumButtons(joystick: PSDL_Joystick): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickNumButtons'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickNumButtons}
+
+{ Update the current state of the open joysticks.
+  This is called automatically by the event loop if any joystick
+  events are enabled. }
+
+procedure SDL_JoystickUpdate;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickUpdate'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickUpdate;}
+
+{ Enable/disable joystick event polling.
+  If joystick events are disabled, you must call SDL_JoystickUpdate()
+  yourself and check the state of the joystick when you want joystick
+  information.
+  The state can be one of SDL_QUERY, SDL_ENABLE or SDL_IGNORE. }
+
+function SDL_JoystickEventState(state: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickEventState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickEventState}
+
+{ Get the current state of an axis control on a joystick
+  The state is a value ranging from -32768 to 32767.
+  The axis indices start at index 0. }
+
+function SDL_JoystickGetAxis(joystick: PSDL_Joystick; axis: Integer) : SInt16;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickGetAxis'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickGetAxis}
+
+{ The hat indices start at index 0. }
+
+function SDL_JoystickGetHat(joystick: PSDL_Joystick; hat: Integer): UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickGetHat'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickGetHat}
+
+{ Get the ball axis change since the last poll
+  This returns 0, or -1 if you passed it invalid parameters.
+  The ball indices start at index 0. }
+
+function SDL_JoystickGetBall(joystick: PSDL_Joystick; ball: Integer; var dx: Integer; var dy: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickGetBall'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickGetBall}
+
+{ Get the current state of a button on a joystick
+  The button indices start at index 0. }
+function SDL_JoystickGetButton( joystick: PSDL_Joystick; Button: Integer): UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickGetButton'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickGetButton}
+
+{ Close a joystick previously opened with SDL_JoystickOpen() }
+procedure SDL_JoystickClose(joystick: PSDL_Joystick);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_JoystickClose'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_JoystickClose}
+
+{------------------------------------------------------------------------------}
+{ event-handling }
+{------------------------------------------------------------------------------}
+
+{ Pumps the event loop, gathering events from the input devices.
+  This function updates the event queue and internal input device state.
+  This should only be run in the thread that sets the video mode. }
+
+procedure SDL_PumpEvents;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_PumpEvents'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_PumpEvents;}
+
+{ Checks the event queue for messages and optionally returns them.
+  If 'action' is SDL_ADDEVENT, up to 'numevents' events will be added to
+  the back of the event queue.
+  If 'action' is SDL_PEEKEVENT, up to 'numevents' events at the front
+  of the event queue, matching 'mask', will be returned and will not
+  be removed from the queue.
+  If 'action' is SDL_GETEVENT, up to 'numevents' events at the front
+  of the event queue, matching 'mask', will be returned and will be
+  removed from the queue.
+  This function returns the number of events actually stored, or -1
+  if there was an error.  This function is thread-safe. }
+
+function SDL_PeepEvents(events: PSDL_Event; numevents: Integer; action: TSDL_eventaction; mask: UInt32): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_PeepEvents'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_PeepEvents}
+
+{ Polls for currently pending events, and returns 1 if there are any pending
+   events, or 0 if there are none available.  If 'event' is not NULL, the next
+   event is removed from the queue and stored in that area. }
+
+function SDL_PollEvent(event: PSDL_Event): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_PollEvent'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_PollEvent}
+
+{  Waits indefinitely for the next available event, returning 1, or 0 if there
+   was an error while waiting for events.  If 'event' is not NULL, the next
+   event is removed from the queue and stored in that area. }
+
+function SDL_WaitEvent(event: PSDL_Event): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WaitEvent'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WaitEvent}
+
+function SDL_PushEvent( event : PSDL_Event ) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_PushEvent'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_PushEvent}
+
+{ If the filter returns 1, then the event will be added to the internal queue.
+  If it returns 0, then the event will be dropped from the queue, but the
+  internal state will still be updated.  This allows selective filtering of
+  dynamically arriving events.
+
+  WARNING:  Be very careful of what you do in the event filter function, as
+            it may run in a different thread!
+
+  There is one caveat when dealing with the SDL_QUITEVENT event type.  The
+  event filter is only called when the window manager desires to close the
+  application window.  If the event filter returns 1, then the window will
+  be closed, otherwise the window will remain open if possible.
+  If the quit event is generated by an interrupt signal, it will bypass the
+  internal queue and be delivered to the application at the next event poll. }
+procedure SDL_SetEventFilter( filter : TSDL_EventFilter );
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetEventFilter'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetEventFilter}
+
+{ Return the current event filter - can be used to "chain" filters.
+  If there is no event filter set, this function returns NULL. }
+
+function SDL_GetEventFilter: TSDL_EventFilter;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetEventFilter'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetEventFilter}
+
+{ This function allows you to set the state of processing certain events.
+  If 'state' is set to SDL_IGNORE, that event will be automatically dropped
+  from the event queue and will not event be filtered.
+  If 'state' is set to SDL_ENABLE, that event will be processed normally.
+  If 'state' is set to SDL_QUERY, SDL_EventState() will return the
+  current processing state of the specified event. }
+
+function SDL_EventState(type_: UInt8; state: Integer): UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_EventState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_EventState}
+
+{------------------------------------------------------------------------------}
+{ Version Routines }
+{------------------------------------------------------------------------------}
+
+{ This macro can be used to fill a version structure with the compile-time
+  version of the SDL library. }
+procedure SDL_VERSION(var X: TSDL_Version);
+{$EXTERNALSYM SDL_VERSION}
+
+{ This macro turns the version numbers into a numeric value:
+   (1,2,3) -> (1203)
+   This assumes that there will never be more than 100 patchlevels }
+
+function SDL_VERSIONNUM(X, Y, Z: Integer): Integer;
+{$EXTERNALSYM SDL_VERSIONNUM}
+
+// This is the version number macro for the current SDL version
+function SDL_COMPILEDVERSION: Integer;
+{$EXTERNALSYM SDL_COMPILEDVERSION}
+
+// This macro will evaluate to true if compiled with SDL at least X.Y.Z
+function SDL_VERSION_ATLEAST(X: Integer; Y: Integer; Z: Integer) : LongBool;
+{$EXTERNALSYM SDL_VERSION_ATLEAST}
+
+{ This function gets the version of the dynamically linked SDL library.
+  it should NOT be used to fill a version structure, instead you should
+  use the SDL_Version() macro. }
+
+function SDL_Linked_Version: PSDL_version;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Linked_Version'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Linked_Version}
+
+{------------------------------------------------------------------------------}
+{ video                                                                        }
+{------------------------------------------------------------------------------}
+
+{ These functions are used internally, and should not be used unless you
+  have a specific need to specify the video driver you want to use.
+  You should normally use SDL_Init() or SDL_InitSubSystem().
+
+  SDL_VideoInit() initializes the video subsystem -- sets up a connection
+  to the window manager, etc, and determines the current video mode and
+  pixel format, but does not initialize a window or graphics mode.
+  Note that event handling is activated by this routine.
+
+  If you use both sound and video in your application, you need to call
+  SDL_Init() before opening the sound device, otherwise under Win32 DirectX,
+  you won't be able to set full-screen display modes. }
+
+function SDL_VideoInit(driver_name: PChar; flags: UInt32): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_VideoInit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_VideoInit}
+procedure SDL_VideoQuit;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_VideoQuit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_VideoQuit}
+
+{ This function fills the given character buffer with the name of the
+  video driver, and returns a pointer to it if the video driver has
+  been initialized.  It returns NULL if no driver has been initialized. }
+
+function SDL_VideoDriverName(namebuf: PChar; maxlen: Integer): PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_VideoDriverName'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_VideoDriverName}
+
+{ This function returns a pointer to the current display surface.
+  If SDL is doing format conversion on the display surface, this
+  function returns the publicly visible surface, not the real video
+  surface. }
+
+function SDL_GetVideoSurface: PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetVideoSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetVideoSurface}
+
+{ This function returns a read-only pointer to information about the
+  video hardware.  If this is called before SDL_SetVideoMode(), the 'vfmt'
+  member of the returned structure will contain the pixel format of the
+  "best" video mode. }
+function SDL_GetVideoInfo: PSDL_VideoInfo;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetVideoInfo'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetVideoInfo}
+
+{ Check to see if a particular video mode is supported.
+  It returns 0 if the requested mode is not supported under any bit depth,
+  or returns the bits-per-pixel of the closest available mode with the
+  given width and height.  If this bits-per-pixel is different from the
+  one used when setting the video mode, SDL_SetVideoMode() will succeed,
+  but will emulate the requested bits-per-pixel with a shadow surface.
+
+  The arguments to SDL_VideoModeOK() are the same ones you would pass to
+  SDL_SetVideoMode() }
+
+function SDL_VideoModeOK(width, height, bpp: Integer; flags: UInt32): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_VideoModeOK'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_VideoModeOK}
+
+{ Return a pointer to an array of available screen dimensions for the
+  given format and video flags, sorted largest to smallest.  Returns
+  NULL if there are no dimensions available for a particular format,
+  or (SDL_Rect **)-1 if any dimension is okay for the given format.
+
+  if 'format' is NULL, the mode list will be for the format given
+  by SDL_GetVideoInfo( ) - > vfmt }
+
+function SDL_ListModes(format: PSDL_PixelFormat; flags: UInt32): PPSDL_Rect;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ListModes'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ListModes}
+
+
+{ Set up a video mode with the specified width, height and bits-per-pixel.
+
+  If 'bpp' is 0, it is treated as the current display bits per pixel.
+
+  If SDL_ANYFORMAT is set in 'flags', the SDL library will try to set the
+  requested bits-per-pixel, but will return whatever video pixel format is
+  available.  The default is to emulate the requested pixel format if it
+  is not natively available.
+
+  If SDL_HWSURFACE is set in 'flags', the video surface will be placed in
+  video memory, if possible, and you may have to call SDL_LockSurface()
+  in order to access the raw framebuffer.  Otherwise, the video surface
+  will be created in system memory.
+
+  If SDL_ASYNCBLIT is set in 'flags', SDL will try to perform rectangle
+  updates asynchronously, but you must always lock before accessing pixels.
+  SDL will wait for updates to complete before returning from the lock.
+
+  If SDL_HWPALETTE is set in 'flags', the SDL library will guarantee
+  that the colors set by SDL_SetColors() will be the colors you get.
+  Otherwise, in 8-bit mode, SDL_SetColors() may not be able to set all
+  of the colors exactly the way they are requested, and you should look
+  at the video surface structure to determine the actual palette.
+  If SDL cannot guarantee that the colors you request can be set,
+  i.e. if the colormap is shared, then the video surface may be created
+  under emulation in system memory, overriding the SDL_HWSURFACE flag.
+
+  If SDL_FULLSCREEN is set in 'flags', the SDL library will try to set
+  a fullscreen video mode.  The default is to create a windowed mode
+  if the current graphics system has a window manager.
+  If the SDL library is able to set a fullscreen video mode, this flag
+  will be set in the surface that is returned.
+
+  If SDL_DOUBLEBUF is set in 'flags', the SDL library will try to set up
+  two surfaces in video memory and swap between them when you call
+  SDL_Flip().  This is usually slower than the normal single-buffering
+  scheme, but prevents "tearing" artifacts caused by modifying video
+  memory while the monitor is refreshing.  It should only be used by
+  applications that redraw the entire screen on every update.
+
+  This function returns the video framebuffer surface, or NULL if it fails. }
+
+function SDL_SetVideoMode(width, height, bpp: Integer; flags: UInt32): PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetVideoMode'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetVideoMode}
+
+
+{ Makes sure the given list of rectangles is updated on the given screen.
+  If 'x', 'y', 'w' and 'h' are all 0, SDL_UpdateRect will update the entire
+  screen.
+  These functions should not be called while 'screen' is locked. }
+
+procedure SDL_UpdateRects(screen: PSDL_Surface; numrects: Integer; rects: PSDL_Rect);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UpdateRects'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UpdateRects}
+procedure SDL_UpdateRect(screen: PSDL_Surface; x, y: SInt32; w, h: UInt32);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UpdateRect'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UpdateRect}
+
+
+{ On hardware that supports double-buffering, this function sets up a flip
+  and returns.  The hardware will wait for vertical retrace, and then swap
+  video buffers before the next video surface blit or lock will return.
+  On hardware that doesn not support double-buffering, this is equivalent
+  to calling SDL_UpdateRect(screen, 0, 0, 0, 0);
+  The SDL_DOUBLEBUF flag must have been passed to SDL_SetVideoMode() when
+  setting the video mode for this function to perform hardware flipping.
+  This function returns 0 if successful, or -1 if there was an error.}
+
+function SDL_Flip(screen: PSDL_Surface): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Flip'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_Flip}
+
+{ Set the gamma correction for each of the color channels.
+  The gamma values range (approximately) between 0.1 and 10.0
+
+  If this function isn't supported directly by the hardware, it will
+  be emulated using gamma ramps, if available.  If successful, this
+  function returns 0, otherwise it returns -1. }
+
+function SDL_SetGamma(redgamma: single; greengamma: single; bluegamma: single ): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetGamma'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetGamma}
+
+{ Set the gamma translation table for the red, green, and blue channels
+  of the video hardware.  Each table is an array of 256 16-bit quantities,
+  representing a mapping between the input and output for that channel.
+  The input is the index into the array, and the output is the 16-bit
+  gamma value at that index, scaled to the output color precision.
+
+  You may pass NULL for any of the channels to leave it unchanged.
+  If the call succeeds, it will return 0.  If the display driver or
+  hardware does not support gamma translation, or otherwise fails,
+  this function will return -1. }
+
+function SDL_SetGammaRamp( redtable: PUInt16; greentable: PUInt16; bluetable: PUInt16): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetGammaRamp'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetGammaRamp}
+
+{ Retrieve the current values of the gamma translation tables.
+
+  You must pass in valid pointers to arrays of 256 16-bit quantities.
+  Any of the pointers may be NULL to ignore that channel.
+  If the call succeeds, it will return 0.  If the display driver or
+  hardware does not support gamma translation, or otherwise fails,
+  this function will return -1. }
+
+function SDL_GetGammaRamp( redtable: PUInt16; greentable: PUInt16; bluetable: PUInt16): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetGammaRamp'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetGammaRamp}
+
+{ Sets a portion of the colormap for the given 8-bit surface.  If 'surface'
+  is not a palettized surface, this function does nothing, returning 0.
+  If all of the colors were set as passed to SDL_SetColors(), it will
+  return 1.  If not all the color entries were set exactly as given,
+  it will return 0, and you should look at the surface palette to
+  determine the actual color palette.
+
+  When 'surface' is the surface associated with the current display, the
+  display colormap will be updated with the requested colors.  If
+  SDL_HWPALETTE was set in SDL_SetVideoMode() flags, SDL_SetColors()
+  will always return 1, and the palette is guaranteed to be set the way
+  you desire, even if the window colormap has to be warped or run under
+  emulation. }
+
+
+function SDL_SetColors(surface: PSDL_Surface; colors: PSDL_Color; firstcolor : Integer; ncolors: Integer) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetColors'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetColors}
+
+{ Sets a portion of the colormap for a given 8-bit surface.
+  'flags' is one or both of:
+  SDL_LOGPAL  -- set logical palette, which controls how blits are mapped
+                 to/from the surface,
+  SDL_PHYSPAL -- set physical palette, which controls how pixels look on
+                 the screen
+  Only screens have physical palettes. Separate change of physical/logical
+  palettes is only possible if the screen has SDL_HWPALETTE set.
+
+  The return value is 1 if all colours could be set as requested, and 0
+  otherwise.
+
+  SDL_SetColors() is equivalent to calling this function with
+  flags = (SDL_LOGPAL or SDL_PHYSPAL). }
+
+function SDL_SetPalette(surface: PSDL_Surface; flags: Integer; colors: PSDL_Color; firstcolor: Integer; ncolors: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetPalette'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetPalette}
+
+{ Maps an RGB triple to an opaque pixel value for a given pixel format }
+function SDL_MapRGB(format: PSDL_PixelFormat; r: UInt8; g: UInt8; b: UInt8) : UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_MapRGB'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_MapRGB}
+
+{ Maps an RGBA quadruple to a pixel value for a given pixel format }
+function SDL_MapRGBA(format: PSDL_PixelFormat; r: UInt8; g: UInt8; b: UInt8; a: UInt8): UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_MapRGBA'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_MapRGBA}
+
+{ Maps a pixel value into the RGB components for a given pixel format }
+procedure SDL_GetRGB(pixel: UInt32; fmt: PSDL_PixelFormat; r: PUInt8; g: PUInt8; b: PUInt8);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetRGB'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetRGB}
+
+{ Maps a pixel value into the RGBA components for a given pixel format }
+procedure SDL_GetRGBA(pixel: UInt32; fmt: PSDL_PixelFormat; r: PUInt8; g: PUInt8; b: PUInt8; a: PUInt8);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetRGBA'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetRGBA}
+
+{ Allocate and free an RGB surface (must be called after SDL_SetVideoMode)
+  If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
+  If the depth is greater than 8 bits, the pixel format is set using the
+  flags '[RGB]mask'.
+  If the function runs out of memory, it will return NULL.
+
+  The 'flags' tell what kind of surface to create.
+  SDL_SWSURFACE means that the surface should be created in system memory.
+  SDL_HWSURFACE means that the surface should be created in video memory,
+  with the same format as the display surface.  This is useful for surfaces
+  that will not change much, to take advantage of hardware acceleration
+  when being blitted to the display surface.
+  SDL_ASYNCBLIT means that SDL will try to perform asynchronous blits with
+  this surface, but you must always lock it before accessing the pixels.
+  SDL will wait for current blits to finish before returning from the lock.
+  SDL_SRCCOLORKEY indicates that the surface will be used for colorkey blits.
+  If the hardware supports acceleration of colorkey blits between
+  two surfaces in video memory, SDL will try to place the surface in
+  video memory. If this isn't possible or if there is no hardware
+  acceleration available, the surface will be placed in system memory.
+  SDL_SRCALPHA means that the surface will be used for alpha blits and
+  if the hardware supports hardware acceleration of alpha blits between
+  two surfaces in video memory, to place the surface in video memory
+  if possible, otherwise it will be placed in system memory.
+  If the surface is created in video memory, blits will be _much_ faster,
+  but the surface format must be identical to the video surface format,
+  and the only way to access the pixels member of the surface is to use
+  the SDL_LockSurface() and SDL_UnlockSurface() calls.
+  If the requested surface actually resides in video memory, SDL_HWSURFACE
+  will be set in the flags member of the returned surface.  If for some
+  reason the surface could not be placed in video memory, it will not have
+  the SDL_HWSURFACE flag set, and will be created in system memory instead. }
+
+function SDL_AllocSurface(flags: UInt32; width, height, depth: Integer;
+  RMask, GMask, BMask, AMask: UInt32): PSDL_Surface;
+{$EXTERNALSYM SDL_AllocSurface}
+
+function SDL_CreateRGBSurface(flags: UInt32; width, height, depth: Integer; RMask, GMask, BMask, AMask: UInt32): PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateRGBSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateRGBSurface}
+
+function SDL_CreateRGBSurfaceFrom(pixels: Pointer; width, height, depth, pitch
+  : Integer; RMask, GMask, BMask, AMask: UInt32): PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateRGBSurfaceFrom'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateRGBSurfaceFrom}
+
+procedure SDL_FreeSurface(surface: PSDL_Surface);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FreeSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FreeSurface}
+
+function SDL_MustLock(Surface: PSDL_Surface): Boolean;
+{$EXTERNALSYM SDL_MustLock}
+{ SDL_LockSurface() sets up a surface for directly accessing the pixels.
+  Between calls to SDL_LockSurface()/SDL_UnlockSurface(), you can write
+  to and read from 'surface->pixels', using the pixel format stored in
+  'surface->format'.  Once you are done accessing the surface, you should
+  use SDL_UnlockSurface() to release it.
+
+  Not all surfaces require locking.  If SDL_MUSTLOCK(surface) evaluates
+  to 0, then you can read and write to the surface at any time, and the
+  pixel format of the surface will not change.  In particular, if the
+  SDL_HWSURFACE flag is not given when calling SDL_SetVideoMode(), you
+  will not need to lock the display surface before accessing it.
+
+  No operating system or library calls should be made between lock/unlock
+  pairs, as critical system locks may be held during this time.
+
+  SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked. }
+function SDL_LockSurface(surface: PSDL_Surface): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LockSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LockSurface}
+
+procedure SDL_UnlockSurface(surface: PSDL_Surface);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UnlockSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UnlockSurface}
+
+{ Load a surface from a seekable SDL data source (memory or file.)
+  If 'freesrc' is non-zero, the source will be closed after being read.
+  Returns the new surface, or NULL if there was an error.
+  The new surface should be freed with SDL_FreeSurface(). }
+function SDL_LoadBMP_RW(src: PSDL_RWops; freesrc: Integer): PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LoadBMP_RW'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LoadBMP_RW}
+
+// Convenience macro -- load a surface from a file
+function SDL_LoadBMP(filename: PChar): PSDL_Surface;
+{$EXTERNALSYM SDL_LoadBMP}
+
+{ Save a surface to a seekable SDL data source (memory or file.)
+  If 'freedst' is non-zero, the source will be closed after being written.
+  Returns 0 if successful or -1 if there was an error. }
+
+function SDL_SaveBMP_RW(surface: PSDL_Surface; dst: PSDL_RWops; freedst: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SaveBMP_RW'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SaveBMP_RW}
+
+// Convenience macro -- save a surface to a file
+function SDL_SaveBMP(surface: PSDL_Surface; filename: PChar): Integer;
+{$EXTERNALSYM SDL_SaveBMP}
+
+{ Sets the color key (transparent pixel) in a blittable surface.
+  If 'flag' is SDL_SRCCOLORKEY (optionally OR'd with SDL_RLEACCEL),
+  'key' will be the transparent pixel in the source image of a blit.
+  SDL_RLEACCEL requests RLE acceleration for the surface if present,
+  and removes RLE acceleration if absent.
+  If 'flag' is 0, this function clears any current color key.
+  This function returns 0, or -1 if there was an error. }
+
+function SDL_SetColorKey(surface: PSDL_Surface; flag, key: UInt32) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetColorKey'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetColorKey}
+
+{ This function sets the alpha value for the entire surface, as opposed to
+  using the alpha component of each pixel. This value measures the range
+  of transparency of the surface, 0 being completely transparent to 255
+  being completely opaque. An 'alpha' value of 255 causes blits to be
+  opaque, the source pixels copied to the destination (the default). Note
+  that per-surface alpha can be combined with colorkey transparency.
+
+  If 'flag' is 0, alpha blending is disabled for the surface.
+  If 'flag' is SDL_SRCALPHA, alpha blending is enabled for the surface.
+  OR:ing the flag with SDL_RLEACCEL requests RLE acceleration for the
+  surface; if SDL_RLEACCEL is not specified, the RLE accel will be removed. }
+
+
+function SDL_SetAlpha(surface: PSDL_Surface; flag: UInt32; alpha: UInt8): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetAlpha'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetAlpha}
+
+{ Sets the clipping rectangle for the destination surface in a blit.
+
+  If the clip rectangle is NULL, clipping will be disabled.
+  If the clip rectangle doesn't intersect the surface, the function will
+  return SDL_FALSE and blits will be completely clipped.  Otherwise the
+  function returns SDL_TRUE and blits to the surface will be clipped to
+  the intersection of the surface area and the clipping rectangle.
+
+  Note that blits are automatically clipped to the edges of the source
+  and destination surfaces. }
+procedure SDL_SetClipRect(surface: PSDL_Surface; rect: PSDL_Rect); cdecl;
+external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetClipRect'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetClipRect}
+
+{ Gets the clipping rectangle for the destination surface in a blit.
+  'rect' must be a pointer to a valid rectangle which will be filled
+  with the correct values. }
+procedure SDL_GetClipRect(surface: PSDL_Surface; rect: PSDL_Rect); cdecl;
+external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetClipRect'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetClipRect}
+
+{ Creates a new surface of the specified format, and then copies and maps
+  the given surface to it so the blit of the converted surface will be as
+  fast as possible.  If this function fails, it returns NULL.
+
+  The 'flags' parameter is passed to SDL_CreateRGBSurface() and has those
+  semantics.  You can also pass SDL_RLEACCEL in the flags parameter and
+  SDL will try to RLE accelerate colorkey and alpha blits in the resulting
+  surface.
+
+  This function is used internally by SDL_DisplayFormat(). }
+
+function SDL_ConvertSurface(src: PSDL_Surface; fmt: PSDL_PixelFormat; flags: UInt32): PSDL_Surface;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ConvertSurface'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ConvertSurface}
+
+{
+  This performs a fast blit from the source surface to the destination
+  surface.  It assumes that the source and destination rectangles are
+  the same size.  If either 'srcrect' or 'dstrect' are NULL, the entire
+  surface (src or dst) is copied.  The final blit rectangles are saved
+  in 'srcrect' and 'dstrect' after all clipping is performed.
+  If the blit is successful, it returns 0, otherwise it returns -1.
+ 
+  The blit function should not be called on a locked surface.
+ 
+  The blit semantics for surfaces with and without alpha and colorkey
+  are defined as follows:
+ 
+  RGBA->RGB:
+      SDL_SRCALPHA set:
+   alpha-blend (using alpha-channel).
+   SDL_SRCCOLORKEY ignored.
+      SDL_SRCALPHA not set:
+   copy RGB.
+   if SDL_SRCCOLORKEY set, only copy the pixels matching the
+   RGB values of the source colour key, ignoring alpha in the
+   comparison.
+ 
+  RGB->RGBA:
+      SDL_SRCALPHA set:
+   alpha-blend (using the source per-surface alpha value);
+   set destination alpha to opaque.
+      SDL_SRCALPHA not set:
+   copy RGB, set destination alpha to opaque.
+      both:
+   if SDL_SRCCOLORKEY set, only copy the pixels matching the
+   source colour key.
+ 
+  RGBA->RGBA:
+      SDL_SRCALPHA set:
+   alpha-blend (using the source alpha channel) the RGB values;
+   leave destination alpha untouched. [Note: is this correct?]
+   SDL_SRCCOLORKEY ignored.
+      SDL_SRCALPHA not set:
+   copy all of RGBA to the destination.
+   if SDL_SRCCOLORKEY set, only copy the pixels matching the
+   RGB values of the source colour key, ignoring alpha in the
+   comparison.
+ 
+  RGB->RGB:
+      SDL_SRCALPHA set:
+   alpha-blend (using the source per-surface alpha value).
+      SDL_SRCALPHA not set:
+   copy RGB.
+      both:
+   if SDL_SRCCOLORKEY set, only copy the pixels matching the
+   source colour key.
+ 
+  If either of the surfaces were in video memory, and the blit returns -2,
+  the video memory was lost, so it should be reloaded with artwork and
+  re-blitted:
+  while ( SDL_BlitSurface(image, imgrect, screen, dstrect) = -2 ) do
+  begin
+  while ( SDL_LockSurface(image) < 0 ) do
+   Sleep(10);
+  -- Write image pixels to image->pixels --
+  SDL_UnlockSurface(image);
+ end;
+
+  This happens under DirectX 5.0 when the system switches away from your
+  fullscreen application.  The lock will also fail until you have access
+  to the video memory again. }
+
+{ You should call SDL_BlitSurface() unless you know exactly how SDL
+   blitting works internally and how to use the other blit functions. }
+
+function SDL_BlitSurface(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): Integer;
+{$EXTERNALSYM SDL_BlitSurface}
+
+{  This is the public blit function, SDL_BlitSurface(), and it performs
+   rectangle validation and clipping before passing it to SDL_LowerBlit() }
+function SDL_UpperBlit(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UpperBlit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UpperBlit}
+
+{ This is a semi-private blit function and it performs low-level surface
+  blitting only. }
+function SDL_LowerBlit(src: PSDL_Surface; srcrect: PSDL_Rect; dst: PSDL_Surface; dstrect: PSDL_Rect): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LowerBlit'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LowerBlit}
+
+{ This function performs a fast fill of the given rectangle with 'color'
+  The given rectangle is clipped to the destination surface clip area
+  and the final fill rectangle is saved in the passed in pointer.
+  If 'dstrect' is NULL, the whole surface will be filled with 'color'
+  The color should be a pixel of the format used by the surface, and
+  can be generated by the SDL_MapRGB() function.
+  This function returns 0 on success, or -1 on error. }
+
+function SDL_FillRect(dst: PSDL_Surface; dstrect: PSDL_Rect; color: UInt32) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FillRect'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FillRect}
+
+{ This function takes a surface and copies it to a new surface of the
+  pixel format and colors of the video framebuffer, suitable for fast
+  blitting onto the display surface.  It calls SDL_ConvertSurface()
+
+  If you want to take advantage of hardware colorkey or alpha blit
+  acceleration, you should set the colorkey and alpha value before
+  calling this function.
+
+  If the conversion fails or runs out of memory, it returns NULL }
+
+function SDL_DisplayFormat(surface: PSDL_Surface): PSDL_Surface; cdecl;
+external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DisplayFormat'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DisplayFormat}
+
+{ This function takes a surface and copies it to a new surface of the
+  pixel format and colors of the video framebuffer (if possible),
+  suitable for fast alpha blitting onto the display surface.
+  The new surface will always have an alpha channel.
+
+  If you want to take advantage of hardware colorkey or alpha blit
+  acceleration, you should set the colorkey and alpha value before
+  calling this function.
+
+  If the conversion fails or runs out of memory, it returns NULL }
+
+
+function SDL_DisplayFormatAlpha(surface: PSDL_Surface): PSDL_Surface; cdecl;
+external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DisplayFormatAlpha'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DisplayFormatAlpha}
+
+//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+//* YUV video surface overlay functions                                       */
+//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+{ This function creates a video output overlay
+  Calling the returned surface an overlay is something of a misnomer because
+  the contents of the display surface underneath the area where the overlay
+  is shown is undefined - it may be overwritten with the converted YUV data. }
+
+function SDL_CreateYUVOverlay(width: Integer; height: Integer; format: UInt32; display: PSDL_Surface): PSDL_Overlay;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateYUVOverlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateYUVOverlay}
+
+// Lock an overlay for direct access, and unlock it when you are done
+function SDL_LockYUVOverlay(Overlay: PSDL_Overlay): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LockYUVOverlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LockYUVOverlay}
+
+procedure SDL_UnlockYUVOverlay(Overlay: PSDL_Overlay); cdecl;
+external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UnlockYUVOverlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UnlockYUVOverlay}
+
+
+{ Blit a video overlay to the display surface.
+  The contents of the video surface underneath the blit destination are
+  not defined.
+  The width and height of the destination rectangle may be different from
+  that of the overlay, but currently only 2x scaling is supported. }
+
+function SDL_DisplayYUVOverlay(Overlay: PSDL_Overlay; dstrect: PSDL_Rect) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DisplayYUVOverlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DisplayYUVOverlay}
+
+// Free a video overlay
+procedure SDL_FreeYUVOverlay(Overlay: PSDL_Overlay);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FreeYUVOverlay'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FreeYUVOverlay}
+
+{------------------------------------------------------------------------------}
+{ OpenGL Routines                                                              }
+{------------------------------------------------------------------------------}
+
+{ Dynamically load a GL driver, if SDL is built with dynamic GL.
+
+  SDL links normally with the OpenGL library on your system by default,
+  but you can compile it to dynamically load the GL driver at runtime.
+  If you do this, you need to retrieve all of the GL functions used in
+  your program from the dynamic library using SDL_GL_GetProcAddress().
+
+  This is disabled in default builds of SDL. }
+
+
+function SDL_GL_LoadLibrary(filename: PChar): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_LoadLibrary'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_LoadLibrary}
+
+{ Get the address of a GL function (for extension functions) }
+function SDL_GL_GetProcAddress(procname: PChar) : Pointer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_GetProcAddress'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_GetProcAddress}
+
+{ Set an attribute of the OpenGL subsystem before intialization. }
+function SDL_GL_SetAttribute(attr: TSDL_GLAttr; value: Integer) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_SetAttribute'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_SetAttribute}
+
+{ Get an attribute of the OpenGL subsystem from the windowing
+  interface, such as glX. This is of course different from getting
+  the values from SDL's internal OpenGL subsystem, which only
+  stores the values you request before initialization.
+
+  Developers should track the values they pass into SDL_GL_SetAttribute
+  themselves if they want to retrieve these values. }
+
+function SDL_GL_GetAttribute(attr: TSDL_GLAttr; var value: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_GetAttribute'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_GetAttribute}
+
+{ Swap the OpenGL buffers, if double-buffering is supported. }
+
+procedure SDL_GL_SwapBuffers;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_SwapBuffers'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_SwapBuffers;}
+
+{ Internal functions that should not be called unless you have read
+  and understood the source code for these functions. }
+
+procedure SDL_GL_UpdateRects(numrects: Integer; rects: PSDL_Rect);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_UpdateRects'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_UpdateRects}
+procedure SDL_GL_Lock;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_Lock'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_Lock;}
+procedure SDL_GL_Unlock;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GL_Unlock'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GL_Unlock;}
+
+{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
+{* These functions allow interaction with the window manager, if any.        *}
+{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
+
+{ Sets/Gets the title and icon text of the display window }
+procedure SDL_WM_GetCaption(var title : PChar; var icon : PChar);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_GetCaption'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_GetCaption}
+procedure SDL_WM_SetCaption( const title : PChar; const icon : PChar);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_SetCaption'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_SetCaption}
+
+{ Sets the icon for the display window.
+  This function must be called before the first call to SDL_SetVideoMode().
+  It takes an icon surface, and a mask in MSB format.
+  If 'mask' is NULL, the entire icon surface will be used as the icon. }
+procedure SDL_WM_SetIcon(icon: PSDL_Surface; mask: PUInt8);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_SetIcon'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_SetIcon}
+
+{ This function iconifies the window, and returns 1 if it succeeded.
+  If the function succeeds, it generates an SDL_APPACTIVE loss event.
+  This function is a noop and returns 0 in non-windowed environments. }
+
+function SDL_WM_IconifyWindow: Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_IconifyWindow'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_IconifyWindow}
+
+{ Toggle fullscreen mode without changing the contents of the screen.
+  If the display surface does not require locking before accessing
+  the pixel information, then the memory pointers will not change.
+
+  If this function was able to toggle fullscreen mode (change from
+  running in a window to fullscreen, or vice-versa), it will return 1.
+  If it is not implemented, or fails, it returns 0.
+
+  The next call to SDL_SetVideoMode() will set the mode fullscreen
+  attribute based on the flags parameter - if SDL_FULLSCREEN is not
+  set, then the display will be windowed by default where supported.
+
+  This is currently only implemented in the X11 video driver. }
+
+function SDL_WM_ToggleFullScreen(surface: PSDL_Surface): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_ToggleFullScreen'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_ToggleFullScreen}
+
+{ Grabbing means that the mouse is confined to the application window,
+  and nearly all keyboard input is passed directly to the application,
+  and not interpreted by a window manager, if any. }
+
+function SDL_WM_GrabInput(mode: TSDL_GrabMode): TSDL_GrabMode;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WM_GrabInput'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WM_GrabInput}
+
+{------------------------------------------------------------------------------}
+{ mouse-routines }
+{------------------------------------------------------------------------------}
+
+{ Retrieve the current state of the mouse.
+  The current button state is returned as a button bitmask, which can
+  be tested using the SDL_BUTTON(X) macros, and x and y are set to the
+  current mouse cursor position.  You can pass NULL for either x or y. }
+
+function SDL_GetMouseState(var x: Integer; var y: Integer): UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetMouseState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetMouseState}
+
+{ Retrieve the current state of the mouse.
+  The current button state is returned as a button bitmask, which can
+  be tested using the SDL_BUTTON(X) macros, and x and y are set to the
+  mouse deltas since the last call to SDL_GetRelativeMouseState(). }
+function SDL_GetRelativeMouseState(var x: Integer; var y: Integer): UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetRelativeMouseState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetRelativeMouseState}
+
+{ Set the position of the mouse cursor (generates a mouse motion event) }
+procedure SDL_WarpMouse(x, y: UInt16);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WarpMouse'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WarpMouse}
+
+{ Create a cursor using the specified data and mask (in MSB format).
+  The cursor width must be a multiple of 8 bits.
+
+  The cursor is created in black and white according to the following:
+  data  mask    resulting pixel on screen
+   0     1       White
+   1     1       Black
+   0     0       Transparent
+   1     0       Inverted color if possible, black if not.
+
+  Cursors created with this function must be freed with SDL_FreeCursor(). }
+function SDL_CreateCursor(data, mask: PUInt8; w, h, hot_x, hot_y: Integer): PSDL_Cursor;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateCursor'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateCursor}
+
+{ Set the currently active cursor to the specified one.
+  If the cursor is currently visible, the change will be immediately
+  represented on the display. }
+procedure SDL_SetCursor(cursor: PSDL_Cursor);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetCursor'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetCursor}
+
+{ Returns the currently active cursor. }
+function SDL_GetCursor: PSDL_Cursor;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetCursor'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetCursor}
+
+{ Deallocates a cursor created with SDL_CreateCursor(). }
+procedure SDL_FreeCursor(cursor: PSDL_Cursor);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_FreeCursor'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_FreeCursor}
+
+{ Toggle whether or not the cursor is shown on the screen.
+  The cursor start off displayed, but can be turned off.
+  SDL_ShowCursor() returns 1 if the cursor was being displayed
+  before the call, or 0 if it was not.  You can query the current
+  state by passing a 'toggle' value of -1. }
+function SDL_ShowCursor(toggle: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ShowCursor'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ShowCursor}
+
+function SDL_BUTTON( Button : Integer ) : Integer;
+
+{------------------------------------------------------------------------------}
+{ Keyboard-routines                                                            }
+{------------------------------------------------------------------------------}
+
+{ Enable/Disable UNICODE translation of keyboard input.
+  This translation has some overhead, so translation defaults off.
+  If 'enable' is 1, translation is enabled.
+  If 'enable' is 0, translation is disabled.
+  If 'enable' is -1, the translation state is not changed.
+  It returns the previous state of keyboard translation. }
+function SDL_EnableUNICODE(enable: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_EnableUNICODE'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_EnableUNICODE}
+
+{ If 'delay' is set to 0, keyboard repeat is disabled. }
+function SDL_EnableKeyRepeat(delay: Integer; interval: Integer): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_EnableKeyRepeat'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_EnableKeyRepeat}
+
+procedure SDL_GetKeyRepeat(delay : PInteger; interval: PInteger);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetKeyRepeat'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetKeyRepeat}
+
+{ Get a snapshot of the current state of the keyboard.
+  Returns an array of keystates, indexed by the SDLK_* syms.
+  Used:
+
+  UInt8 *keystate = SDL_GetKeyState(NULL);
+  if ( keystate[SDLK_RETURN] ) ... <RETURN> is pressed }
+
+function SDL_GetKeyState(numkeys: PInt): PUInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetKeyState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetKeyState}
+
+{ Get the current key modifier state }
+function SDL_GetModState: TSDLMod;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetModState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetModState}
+
+{ Set the current key modifier state
+  This does not change the keyboard state, only the key modifier flags. }
+procedure SDL_SetModState(modstate: TSDLMod);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SetModState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SetModState}
+
+{ Get the name of an SDL virtual keysym }
+function SDL_GetKeyName(key: TSDLKey): PChar;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetKeyName'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetKeyName}
+
+{------------------------------------------------------------------------------}
+{ Active Routines                                                              }
+{------------------------------------------------------------------------------}
+
+{ This function returns the current state of the application, which is a
+  bitwise combination of SDL_APPMOUSEFOCUS, SDL_APPINPUTFOCUS, and
+  SDL_APPACTIVE.  If SDL_APPACTIVE is set, then the user is able to
+  see your application, otherwise it has been iconified or disabled. }
+
+function SDL_GetAppState: UInt8;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetAppState'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetAppState}
+
+
+{ Mutex functions }
+
+{ Create a mutex, initialized unlocked }
+
+function SDL_CreateMutex: PSDL_Mutex;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateMutex'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateMutex}
+
+{ Lock the mutex  (Returns 0, or -1 on error) }
+
+ function SDL_mutexP(mutex: PSDL_mutex): Integer;
+ cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_mutexP'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{ $ EXTERNALSYM SDL_mutexP}
+
+function SDL_LockMutex(mutex: PSDL_mutex): Integer;
+{$EXTERNALSYM SDL_LockMutex}
+
+{ Unlock the mutex  (Returns 0, or -1 on error) }
+function SDL_mutexV(mutex: PSDL_mutex): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_mutexV'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_mutexV}
+
+function SDL_UnlockMutex(mutex: PSDL_mutex): Integer;
+{$EXTERNALSYM SDL_UnlockMutex}
+
+{ Destroy a mutex }
+procedure SDL_DestroyMutex(mutex: PSDL_mutex);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DestroyMutex'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DestroyMutex}
+
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+{ Semaphore functions                                           }
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+{ Create a semaphore, initialized with value, returns NULL on failure. }
+function SDL_CreateSemaphore(initial_value: UInt32): PSDL_Sem;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateSemaphore'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateSemaphore}
+
+
+{ Destroy a semaphore }
+procedure SDL_DestroySemaphore(sem: PSDL_sem);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DestroySemaphore'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DestroySemaphore}
+
+{ This function suspends the calling thread until the semaphore pointed
+  to by sem has a positive count. It then atomically decreases the semaphore
+  count. }
+
+function SDL_SemWait(sem: PSDL_sem): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SemWait'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SemWait}
+
+{ Non-blocking variant of SDL_SemWait(), returns 0 if the wait succeeds,
+   SDL_MUTEX_TIMEDOUT if the wait would block, and -1 on error. }
+
+function SDL_SemTryWait(sem: PSDL_sem): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SemTryWait'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SemTryWait}
+
+{ Variant of SDL_SemWait() with a timeout in milliseconds, returns 0 if
+   the wait succeeds, SDL_MUTEX_TIMEDOUT if the wait does not succeed in
+   the allotted time, and -1 on error.
+   On some platforms this function is implemented by looping with a delay
+   of 1 ms, and so should be avoided if possible. }
+
+function SDL_SemWaitTimeout(sem: PSDL_sem; ms: UInt32): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SemWaitTimeout'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SemTryWait}
+
+{ Atomically increases the semaphore's count (not blocking), returns 0,
+   or -1 on error. }
+
+function SDL_SemPost(sem: PSDL_sem): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SemPost'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SemTryWait}
+
+{ Returns the current count of the semaphore }
+
+function SDL_SemValue(sem: PSDL_sem): UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_SemValue'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_SemValue}
+
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+{ Condition variable functions                                  }
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+{ Create a condition variable }
+function SDL_CreateCond: PSDL_Cond;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateCond'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateCond}
+
+{ Destroy a condition variable }
+procedure SDL_DestroyCond(cond: PSDL_Cond);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_DestroyCond'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_DestroyCond}
+
+{ Restart one of the threads that are waiting on the condition variable,
+   returns 0 or -1 on error. }
+
+function SDL_CondSignal(cond: PSDL_cond): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CondSignal'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CondSignal}
+
+{ Restart all threads that are waiting on the condition variable,
+  returns 0 or -1 on error. }
+
+function SDL_CondBroadcast(cond: PSDL_cond): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CondBroadcast'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CondBroadcast}
+
+
+{ Wait on the condition variable, unlocking the provided mutex.
+  The mutex must be locked before entering this function!
+  Returns 0 when it is signaled, or -1 on error. }
+
+function SDL_CondWait(cond: PSDL_cond; mut: PSDL_mutex): Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CondWait'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CondWait}
+
+{ Waits for at most 'ms' milliseconds, and returns 0 if the condition
+  variable is signaled, SDL_MUTEX_TIMEDOUT if the condition is not
+  signaled in the allotted time, and -1 on error.
+  On some platforms this function is implemented by looping with a delay
+  of 1 ms, and so should be avoided if possible. }
+
+function SDL_CondWaitTimeout(cond: PSDL_cond; mut: PSDL_mutex; ms: UInt32) : Integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CondWaitTimeout'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CondWaitTimeout}
+
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+{ Condition variable functions                                  }
+{ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * }
+
+{ Create a thread }
+function SDL_CreateThread(fn: PInt; data: Pointer): PSDL_Thread;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_CreateThread'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_CreateThread}
+
+{ Get the 32-bit thread identifier for the current thread }
+function SDL_ThreadID: UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_ThreadID'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_ThreadID}
+
+{ Get the 32-bit thread identifier for the specified thread,
+  equivalent to SDL_ThreadID() if the specified thread is NULL. }
+function SDL_GetThreadID(thread: PSDL_Thread): UInt32;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetThreadID'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetThreadID}
+
+{ Wait for a thread to finish.
+  The return code for the thread function is placed in the area
+  pointed to by 'status', if 'status' is not NULL. }
+
+procedure SDL_WaitThread(thread: PSDL_Thread; var status: Integer);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_WaitThread'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_WaitThread}
+
+{ Forcefully kill a thread without worrying about its state }
+procedure SDL_KillThread(thread: PSDL_Thread);
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_KillThread'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_KillThread}
+
+{------------------------------------------------------------------------------}
+{ Get Environment Routines                                                     }
+{------------------------------------------------------------------------------}
+{$IFDEF WINDOWS}
+function _putenv( const variable : Pchar ): integer;
+cdecl;
+{$ENDIF}
+
+{$IFDEF Unix}
+{$IFDEF FPC}
+function _putenv( const variable : Pchar ): integer;
+cdecl; external 'libc.so' name 'putenv';
+{$ENDIF}
+{$ENDIF}
+
+{ Put a variable of the form "name=value" into the environment }
+//function SDL_putenv(const variable: PChar): integer; cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Init'{$ELSE} SDLLibName{$ENDIF __GPC__}SDLLibName name '';
+function SDL_putenv(const variable: PChar): integer;
+{$EXTERNALSYM SDL_putenv}
+
+// The following function has been commented out to encourage developers to use
+// SDL_putenv as it it more portable
+//function putenv(const variable: PChar): integer;
+//{$EXTERNALSYM putenv}
+
+{$IFDEF WINDOWS}
+{$IFNDEF __GPC__}
+function getenv( const name : Pchar ): PChar; cdecl;
+{$ENDIF}
+{$ENDIF}
+
+{* Retrieve a variable named "name" from the environment }
+//function SDL_getenv(const name: PChar): PChar; cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_Init'{$ELSE} SDLLibName{$ENDIF __GPC__}SDLLibName name '';
+function SDL_getenv(const name: PChar): PChar;
+{$EXTERNALSYM SDL_getenv}
+
+// The following function has been commented out to encourage developers to use
+// SDL_getenv as it it more portable
+//function getenv(const name: PChar): PChar;
+//{$EXTERNALSYM getenv}
+
+{*
+ * This function gives you custom hooks into the window manager information.
+ * It fills the structure pointed to by 'info' with custom information and
+ * returns 1 if the function is implemented.  If it's not implemented, or
+ * the version member of the 'info' structure is invalid, it returns 0.
+ *}
+function SDL_GetWMInfo(info : PSDL_SysWMinfo) : integer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_GetWMInfo'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_GetWMInfo}
+
+{------------------------------------------------------------------------------}
+
+//SDL_loadso.h
+{* This function dynamically loads a shared object and returns a pointer
+ * to the object handle (or NULL if there was an error).
+ * The 'sofile' parameter is a system dependent name of the object file.
+ *}
+function SDL_LoadObject( const sofile : PChar ) : Pointer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LoadObject'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LoadObject}
+
+{* Given an object handle, this function looks up the address of the
+ * named function in the shared object and returns it.  This address
+ * is no longer valid after calling SDL_UnloadObject().
+ *}
+function SDL_LoadFunction( handle : Pointer; const name : PChar ) : Pointer;
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_LoadFunction'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_LoadFunction}
+
+{* Unload a shared object from memory *}
+procedure SDL_UnloadObject( handle : Pointer );
+cdecl; external {$IFNDEF NDS}{$IFDEF __GPC__}name 'SDL_UnloadObject'{$ELSE} SDLLibName{$ENDIF __GPC__}{$ENDIF};
+{$EXTERNALSYM SDL_UnloadObject}
+
+
+
+{------------------------------------------------------------------------------}
+
+function SDL_Swap32(D: Uint32): Uint32;
+{$EXTERNALSYM SDL_Swap32}
+
+{ FreeAndNil frees the given TObject instance and sets the variable reference
+  to nil.  Be careful to only pass TObjects to this routine. }
+procedure FreeAndNil(var Obj);
+
+{ Exit procedure handling }
+
+{ AddExitProc adds the given procedure to the run-time library's exit
+  procedure list. When an application terminates, its exit procedures are
+  executed in reverse order of definition, i.e. the last procedure passed
+  to AddExitProc is the first one to get executed upon termination. }
+procedure AddExitProc(Proc: TProcedure);
+
+// Bitwise Checking functions
+function IsBitOn( value : integer; bit : Byte ) : boolean;
+
+function TurnBitOn( value : integer; bit : Byte ) : integer;
+
+function TurnBitOff( value : integer; bit : Byte ) : integer;
+
+implementation
+
+{$IFDEF __GPC__}
+  {$L 'sdl'}  { link sdl.dll.a or libsdl.so or libsdl.a }
+{$ENDIF}
+
+function SDL_TABLESIZE(table: PChar): Integer;
+begin
+  Result := SizeOf(table) div SizeOf(table[0]);
+end;
+
+procedure SDL_OutOfMemory;
+begin
+  {$IFNDEF WINDOWS}
+  SDL_Error(SDL_ENOMEM);
+  {$ENDIF}
+end;
+
+function SDL_RWSeek(context: PSDL_RWops; offset: Integer; whence: Integer) : Integer;
+begin
+  Result := context^.seek(context, offset, whence);
+end;
+
+function SDL_RWTell(context: PSDL_RWops): Integer;
+begin
+  Result := context^.seek(context, 0, 1);
+end;
+
+function SDL_RWRead(context: PSDL_RWops; ptr: Pointer; size: Integer; n: Integer): Integer;
+begin
+  Result := context^.read(context, ptr, size, n);
+end;
+
+function SDL_RWWrite(context: PSDL_RWops; ptr: Pointer; size: Integer; n: Integer): Integer;
+begin
+  Result := context^.write(context, ptr, size, n);
+end;
+
+function SDL_RWClose(context: PSDL_RWops): Integer;
+begin
+  Result := context^.close(context);
+end;
+
+function SDL_LoadWAV(filename: PChar; spec: PSDL_AudioSpec; audio_buf: PUInt8; audiolen: PUInt32): PSDL_AudioSpec;
+begin
+  Result := SDL_LoadWAV_RW(SDL_RWFromFile(filename, 'rb'), 1, spec, audio_buf, audiolen);
+end;
+
+function SDL_CDInDrive( status : TSDL_CDStatus ): LongBool;
+begin
+  Result := ord( status ) > ord( CD_ERROR );
+end;
+
+procedure FRAMES_TO_MSF(frames: Integer; var M: Integer; var S: Integer; var
+  F: Integer);
+var
+  value: Integer;
+begin
+  value := frames;
+  F := value mod CD_FPS;
+  value := value div CD_FPS;
+  S := value mod 60;
+  value := value div 60;
+  M := value;
+end;
+
+function MSF_TO_FRAMES(M: Integer; S: Integer; F: Integer): Integer;
+begin
+  Result := M * 60 * CD_FPS + S * CD_FPS + F;
+end;
+
+procedure SDL_VERSION(var X: TSDL_Version);
+begin
+  X.major := SDL_MAJOR_VERSION;
+  X.minor := SDL_MINOR_VERSION;
+  X.patch := SDL_PATCHLEVEL;
+end;
+
+function SDL_VERSIONNUM(X, Y, Z: Integer): Integer;
+begin
+  Result := X * 1000 + Y * 100 + Z;
+end;
+
+function SDL_COMPILEDVERSION: Integer;
+begin
+  Result := SDL_VERSIONNUM(SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL
+    );
+end;
+
+function SDL_VERSION_ATLEAST(X, Y, Z: Integer): LongBool;
+begin
+  Result := (SDL_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z));
+end;
+
+function SDL_LoadBMP(filename: PChar): PSDL_Surface;
+begin
+  Result := SDL_LoadBMP_RW(SDL_RWFromFile(filename, 'rb'), 1);
+end;
+
+function SDL_SaveBMP(surface: PSDL_Surface; filename: PChar): Integer;
+begin
+  Result := SDL_SaveBMP_RW(surface, SDL_RWFromFile(filename, 'wb'), 1);
+end;
+
+function SDL_BlitSurface(src: PSDL_Surface; srcrect: PSDL_Rect; dst:
+  PSDL_Surface;
+  dstrect: PSDL_Rect): Integer;
+begin
+  Result := SDL_UpperBlit(src, srcrect, dst, dstrect);
+end;
+
+function SDL_AllocSurface(flags: UInt32; width, height, depth: Integer;
+  RMask, GMask, BMask, AMask: UInt32): PSDL_Surface;
+begin
+  Result := SDL_CreateRGBSurface(flags, width, height, depth, RMask, GMask,
+    BMask, AMask);
+end;
+
+function SDL_MustLock(Surface: PSDL_Surface): Boolean;
+begin
+  Result := ( ( surface^.offset <> 0 ) or
+           ( ( surface^.flags and ( SDL_HWSURFACE or SDL_ASYNCBLIT or SDL_RLEACCEL ) ) <> 0 ) );
+end;
+
+function SDL_LockMutex(mutex: PSDL_mutex): Integer;
+begin
+  Result := SDL_mutexP(mutex);
+end;
+
+function SDL_UnlockMutex(mutex: PSDL_mutex): Integer;
+begin
+  Result := SDL_mutexV(mutex);
+end;
+
+{$IFDEF WINDOWS}
+function _putenv( const variable : Pchar ): Integer;
+cdecl; external {$IFDEF __GPC__}name '_putenv'{$ELSE} 'MSVCRT.DLL'{$ENDIF __GPC__};
+{$ENDIF}
+
+
+function SDL_putenv(const variable: PChar): Integer;
+begin
+  {$IFDEF WINDOWS}
+  Result := _putenv(variable);
+  {$ENDIF}
+
+  {$IFDEF UNIX}
+  {$IFDEF FPC}
+  Result := _putenv(variable);
+  {$ELSE}
+  Result := libc.putenv(variable);
+  {$ENDIF}
+  {$ENDIF}
+end;
+
+{$IFDEF WINDOWS}
+{$IFNDEF __GPC__}
+function getenv( const name : Pchar ): PChar;
+cdecl; external {$IFDEF __GPC__}name 'getenv'{$ELSE} 'MSVCRT.DLL'{$ENDIF};
+{$ENDIF}
+{$ENDIF}
+
+function SDL_getenv(const name: PChar): PChar;
+begin
+  {$IFDEF WINDOWS}
+
+  {$IFDEF __GPC__}
+  Result := getenv( string( name ) );
+  {$ELSE}
+  Result := getenv( name );
+  {$ENDIF}
+
+  {$ELSE}
+
+  {$IFDEF UNIX}
+
+  {$IFDEF FPC}
+  Result := fpgetenv(name);
+  {$ELSE}
+  Result := libc.getenv(name);  
+  {$ENDIF}
+
+  {$ENDIF}
+
+  {$ENDIF}
+end;
+
+function SDL_BUTTON( Button : Integer ) : Integer;
+begin
+  Result := SDL_PRESSED shl ( Button - 1 );
+end;
+
+function SDL_Swap32(D: Uint32): Uint32;
+begin
+  Result := ((D shl 24) or ((D shl 8) and $00FF0000) or ((D shr 8) and $0000FF00) or (D shr 24));
+end;
+
+procedure FreeAndNil(var Obj);
+{$IFNDEF __GPC__}
+{$IFNDEF __TMT__}
+var
+  Temp: TObject;
+{$ENDIF}
+{$ENDIF}
+begin
+{$IFNDEF __GPC__}
+{$IFNDEF __TMT__}
+  Temp := TObject(Obj);
+  Pointer(Obj) := nil;
+  Temp.Free;
+{$ENDIF}
+{$ENDIF}
+end;
+
+{ Exit procedure handling }
+type
+  PExitProcInfo = ^TExitProcInfo;
+  TExitProcInfo = record
+    Next: PExitProcInfo;
+    SaveExit: Pointer;
+    Proc: TProcedure;
+  end;
+
+var
+  ExitProcList: PExitProcInfo = nil;
+
+procedure DoExitProc;
+var
+  P: PExitProcInfo;
+  Proc: TProcedure;
+begin
+  P := ExitProcList;
+  ExitProcList := P^.Next;
+  ExitProc := P^.SaveExit;
+  Proc := P^.Proc;
+  Dispose(P);
+  Proc;
+end;
+
+procedure AddExitProc(Proc: TProcedure);
+var
+  P: PExitProcInfo;
+begin
+  New(P);
+  P^.Next := ExitProcList;
+  P^.SaveExit := ExitProc;
+  P^.Proc := Proc;
+  ExitProcList := P;
+  ExitProc := @DoExitProc;
+end;
+
+function IsBitOn( value : integer; bit : Byte ) : boolean;
+begin
+  result := ( ( value and ( 1 shl bit ) ) <> 0 );
+end;
+
+function TurnBitOn( value : integer; bit : Byte ) : integer;
+begin
+  result := ( value or ( 1 shl bit ) );
+end;
+
+function TurnBitOff( value : integer; bit : Byte ) : integer;
+begin
+  result := ( value and not ( 1 shl bit ) );
+end;
+
+end.
+
+
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdl_cpuinfo.pas b/src/lib/JEDI-SDL/SDL/Pas/sdl_cpuinfo.pas
new file mode 100644
index 00000000..b09f19f9
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdl_cpuinfo.pas
@@ -0,0 +1,155 @@
+unit sdl_cpuinfo;
+{
+  $Id: sdl_cpuinfo.pas,v 1.2 2004/02/18 22:52:53 savage Exp $
+
+}
+{******************************************************************************}
+{                                                                              }
+{       Borland Delphi SDL - Simple DirectMedia Layer                          }
+{       Conversion of the Simple DirectMedia Layer Headers                     }
+{                                                                              }
+{ Portions created by Sam Lantinga <slouken@devolution.com> are                }
+{ Copyright (C) 1997-2004  Sam Lantinga                                        }
+{ 5635-34 Springhouse Dr.                                                      }
+{ Pleasanton, CA 94588 (USA)                                                   }
+{                                                                              }
+{ All Rights Reserved.                                                         }
+{                                                                              }
+{ The original files are : SDL_cpuinfo.h                                       }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominqiue Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominqiue Louis are                                      }
+{ Copyright (C) 2000 - 2004 Dominqiue Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{
+  $Log: sdl_cpuinfo.pas,v $
+  Revision 1.2  2004/02/18 22:52:53  savage
+  Forgot to add jedi-sdl.inc file. It's there now.
+
+  Revision 1.1  2004/02/18 22:35:54  savage
+  Brought sdl.pas up to 1.2.7 compatability
+  Thus...
+  Added SDL_GL_STEREO,
+      SDL_GL_MULTISAMPLEBUFFERS,
+      SDL_GL_MULTISAMPLESAMPLES
+
+  Add DLL/Shared object functions
+  function SDL_LoadObject( const sofile : PChar ) : Pointer;
+
+  function SDL_LoadFunction( handle : Pointer; const name : PChar ) : Pointer;
+
+  procedure SDL_UnloadObject( handle : Pointer );
+
+  Added function to create RWops from const memory: SDL_RWFromConstMem()
+  function SDL_RWFromConstMem(const mem: Pointer; size: Integer) : PSDL_RWops;
+
+  Ported SDL_cpuinfo.h so Now you can test for Specific CPU types.
+
+
+}
+{******************************************************************************}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+  sdl;
+
+{* This function returns true if the CPU has the RDTSC instruction
+ *}
+function SDL_HasRDTSC : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasRDTSC'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasRDTSC}
+
+{* This function returns true if the CPU has MMX features
+ *}
+function SDL_HasMMX : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasMMX'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasMMX}
+
+{* This function returns true if the CPU has MMX Ext. features
+ *}
+function SDL_HasMMXExt : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasMMXExt'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasMMXExt}
+
+{* This function returns true if the CPU has 3DNow features
+ *}
+function SDL_Has3DNow : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_Has3DNow'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_Has3DNow}
+
+{* This function returns true if the CPU has 3DNow! Ext. features
+ *}
+function SDL_Has3DNowExt : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_Has3DNowExt'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_Has3DNowExt}
+
+{* This function returns true if the CPU has SSE features
+ *}
+function SDL_HasSSE : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasSSE'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasSSE}
+
+{* This function returns true if the CPU has SSE2 features
+ *}
+function SDL_HasSSE2 : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasSSE2'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasSSE2}
+
+{* This function returns true if the CPU has AltiVec features
+ *}
+function SDL_HasAltiVec : SDL_Bool;
+cdecl; external {$IFDEF __GPC__}name 'SDL_HasAltiVec'{$ELSE} SDLLibName{$ENDIF __GPC__};
+{$EXTERNALSYM SDL_HasAltiVec}
+
+implementation
+
+end.
+ 
\ No newline at end of file
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlgameinterface.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlgameinterface.pas
new file mode 100644
index 00000000..9a58ff40
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlgameinterface.pas
@@ -0,0 +1,202 @@
+unit sdlgameinterface;
+{
+  $Id: sdlgameinterface.pas,v 1.4 2005/08/03 18:57:31 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{                    Game Interface Base class                                 }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominqiue Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominqiue Louis are                                      }
+{ Copyright (C) 2000 - 2001 Dominqiue Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{                                                                              }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   September   23 2004 - DL : Initial Creation                                }
+{
+  $Log: sdlgameinterface.pas,v $
+  Revision 1.4  2005/08/03 18:57:31  savage
+  Various updates and additions. Mainly to handle OpenGL 3D Window support and better cursor support for the mouse class
+
+  Revision 1.3  2004/10/17 18:41:49  savage
+  Slight Change to allow Reseting of Input Event handlers
+
+  Revision 1.2  2004/09/30 22:35:47  savage
+  Changes, enhancements and additions as required to get SoAoS working.
+
+
+}
+{******************************************************************************}
+
+interface
+
+uses
+  sdl,
+  sdlwindow;
+
+type
+  TGameInterfaceClass = class of TGameInterface;
+
+  TGameInterface = class( TObject )
+  private
+    FNextGameInterface : TGameInterfaceClass;
+  protected
+    Dragging : Boolean;
+    Loaded : Boolean;
+    procedure FreeSurfaces; virtual;
+    procedure Render; virtual; abstract;
+    procedure Close; virtual;
+    procedure Update( aElapsedTime : single ); virtual; 
+    procedure MouseDown( Button : Integer; Shift: TSDLMod; MousePos : TPoint ); virtual;
+    procedure MouseMove( Shift: TSDLMod; CurrentPos : TPoint; RelativePos : TPoint ); virtual;
+    procedure MouseUp( Button : Integer; Shift: TSDLMod; MousePos : TPoint ); virtual;
+    procedure MouseWheelScroll( WheelDelta : Integer; Shift: TSDLMod; MousePos : TPoint ); virtual;
+    procedure KeyDown( var Key: TSDLKey; Shift: TSDLMod; unicode : UInt16 ); virtual;
+  public
+    MainWindow : TSDLCustomWindow;
+    procedure ResetInputManager;
+    procedure LoadSurfaces; virtual;
+    function PointIsInRect( Point : TPoint; x, y, x1, y1 : integer ) : Boolean;
+    constructor Create( const aMainWindow : TSDLCustomWindow );
+    destructor Destroy; override;
+    property NextGameInterface : TGameInterfaceClass read FNextGameInterface write FNextGameInterface;
+  end;
+
+implementation
+
+{ TGameInterface }
+procedure TGameInterface.Close;
+begin
+  FNextGameInterface := nil;
+end;
+
+constructor TGameInterface.Create( const aMainWindow : TSDLCustomWindow );
+begin
+  inherited Create;
+  MainWindow := aMainWindow;
+  FNextGameInterface := TGameInterface;
+  ResetInputManager;
+end;
+
+destructor TGameInterface.Destroy;
+begin
+  if Loaded then
+    FreeSurfaces;
+  inherited;
+end;
+
+procedure TGameInterface.FreeSurfaces;
+begin
+  Loaded := False;
+end;
+
+procedure TGameInterface.KeyDown(var Key: TSDLKey; Shift: TSDLMod; unicode: UInt16);
+begin
+
+end;
+
+procedure TGameInterface.LoadSurfaces;
+begin
+  Loaded := True;
+end;
+
+procedure TGameInterface.MouseDown(Button: Integer; Shift: TSDLMod; MousePos: TPoint);
+begin
+  Dragging := True;
+end;
+
+procedure TGameInterface.MouseMove(Shift: TSDLMod; CurrentPos, RelativePos: TPoint);
+begin
+
+end;
+
+procedure TGameInterface.MouseUp(Button: Integer; Shift: TSDLMod; MousePos: TPoint);
+begin
+  Dragging := True;
+end;
+
+procedure TGameInterface.MouseWheelScroll(WheelDelta: Integer; Shift: TSDLMod; MousePos: TPoint);
+begin
+
+end;
+
+function TGameInterface.PointIsInRect( Point : TPoint; x, y, x1, y1: integer ): Boolean;
+begin
+  if ( Point.x >= x )
+  and ( Point.y >= y )
+  and ( Point.x <= x1 )
+  and ( Point.y <= y1 ) then
+    result := true
+  else
+    result := false;
+end;
+
+procedure TGameInterface.ResetInputManager;
+var
+  temp : TSDLNotifyEvent;
+begin
+  MainWindow.InputManager.Mouse.OnMouseDown := MouseDown;
+  MainWindow.InputManager.Mouse.OnMouseMove := MouseMove;
+  MainWindow.InputManager.Mouse.OnMouseUp := MouseUp;
+  MainWindow.InputManager.Mouse.OnMouseWheel := MouseWheelScroll;
+  MainWindow.InputManager.KeyBoard.OnKeyDown := KeyDown;
+  temp := Render;
+  MainWindow.OnRender := temp;
+  temp := Close;
+  MainWindow.OnClose := temp;
+  MainWindow.OnUpdate := Update;
+end;
+
+procedure TGameInterface.Update(aElapsedTime: single);
+begin
+
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdli386utils.pas b/src/lib/JEDI-SDL/SDL/Pas/sdli386utils.pas
new file mode 100644
index 00000000..4de4ebee
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdli386utils.pas
@@ -0,0 +1,5236 @@
+unit sdli386utils;
+{
+  $Id: sdli386utils.pas,v 1.5 2004/06/02 19:38:53 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{       Borland Delphi SDL - Simple DirectMedia Layer                          }
+{                SDL Utility functions                                         }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Tom Jones <tigertomjones@gmx.de>                                             }
+{                                                                              }
+{ Portions created by Tom Jones are                                            }
+{ Copyright (C) 2000 - 2001 Tom Jones.                                         }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{ Róbert Kisnémeth <mikrobi@freemail.hu>                                       }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   Helper functions...                                                        }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{               2000 - TJ : Initial creation                                   }
+{                                                                              }
+{   July   13   2001 - DL : Added PutPixel and GetPixel routines.              }
+{                                                                              }
+{   Sept   14   2001 - RK : Added flipping routines.                           }
+{                                                                              }
+{   Sept   19   2001 - RK : Added PutPixel & line drawing & blitting with ADD  }
+{                           effect. Fixed a bug in SDL_PutPixel & SDL_GetPixel }
+{                           Added PSDLRect()                                   }
+{   Sept   22   2001 - DL : Removed need for Windows.pas by defining types here}
+{                           Also removed by poor attempt or a dialog box       }
+{                                                                              }
+{   Sept   25   2001 - RK : Added PixelTest, NewPutPixel, SubPixel, SubLine,   }
+{                           SubSurface, MonoSurface & TexturedSurface          }
+{                                                                              }
+{   Sept   26   2001 - DL : Made change so that it refers to native Pascal     }
+{                           types rather that Windows types. This makes it more}
+{                           portable to Linix.                                 }
+{                                                                              }
+{   Sept   27   2001 - RK : SDLUtils now can be compiled with FreePascal       }
+{                                                                              }
+{   Oct    27   2001 - JF : Added ScrollY function                             }
+{                                                                              }
+{   Jan    21   2002 - RK : Added SDL_ZoomSurface and SDL_WarpSurface          }
+{                                                                              }
+{   Mar    28   2002 - JF : Added SDL_RotateSurface                            }
+{                                                                              }
+{   May    13   2002 - RK : Improved SDL_FillRectAdd & SDL_FillRectSub         }
+{                                                                              }
+{   May    27   2002 - YS : GradientFillRect function                          }
+{                                                                              }
+{   May    30   2002 - RK : Added SDL_2xBlit, SDL_Scanline2xBlit               }
+{                           & SDL_50Scanline2xBlit                             }
+{                                                                              }
+{  June    12   2002 - RK : Added SDL_PixelTestSurfaceVsRect                   }
+{                                                                              }
+{  June    12   2002 - JF : Updated SDL_PixelTestSurfaceVsRect                 }
+{                                                                              }
+{ November  9   2002 - JF : Added Jason's boolean Surface functions            }
+{                                                                              }
+{ December 10   2002 - DE : Added Dean's SDL_ClipLine function                 }
+{                                                                              }
+{******************************************************************************}
+{
+  $Log: sdli386utils.pas,v $
+  Revision 1.5  2004/06/02 19:38:53  savage
+  Changes to SDL_GradientFillRect as suggested by
+  Ángel Eduardo García Hernández.  Many thanks.
+
+  Revision 1.4  2004/05/29 23:11:53  savage
+  Changes to SDL_ScaleSurfaceRect as suggested by
+  Ángel Eduardo García Hernández to fix a colour issue with the function. Many thanks.
+
+  Revision 1.3  2004/02/20 22:04:11  savage
+  Added Changes as mentioned by Rodrigo "Rui" R. (1/2 RRC2Soft) to facilitate FPC compilation and it also works in Delphi. Also syncronized the funcitons so that they are identical to sdlutils.pas, when no assembly version is available.
+
+  Revision 1.2  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+  
+}
+
+interface
+
+{$i jedi-sdl.inc}
+
+uses
+{$IFDEF UNIX}
+  Types,
+  Xlib,
+{$ENDIF}
+  SysUtils,
+  sdl;
+
+type
+  TGradientStyle = ( gsHorizontal, gsVertical );
+
+  // Pixel procedures
+function SDL_PixelTest( SrcSurface1 : PSDL_Surface; SrcRect1 : PSDL_Rect; SrcSurface2 :
+  PSDL_Surface; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) : Boolean;
+  
+function SDL_GetPixel( SrcSurface : PSDL_Surface; x : cardinal; y : cardinal ) : Uint32;
+
+procedure SDL_PutPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+
+procedure SDL_AddPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+
+procedure SDL_SubPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+
+// Line procedures
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );overload;
+
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal ; DashLength, DashSpace : byte );  overload;  
+
+procedure SDL_AddLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+
+procedure SDL_SubLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+
+// Surface procedures
+procedure SDL_AddSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_SubSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_MonoSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect; Color : cardinal );
+
+procedure SDL_TexturedSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect; Texture : PSDL_Surface;
+  TextureRect : PSDL_Rect );
+
+procedure SDL_ZoomSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; DstRect : PSDL_Rect );
+
+procedure SDL_WarpSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; UL, UR, LR, LL : PPoint );
+
+// Flip procedures
+procedure SDL_FlipRectH( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+
+procedure SDL_FlipRectV( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+
+function PSDLRect( aLeft, aTop, aWidth, aHeight : integer ) : PSDL_Rect;
+
+function SDLRect( aLeft, aTop, aWidth, aHeight : integer ) : TSDL_Rect; overload;
+
+function SDLRect( aRect : TRect ) : TSDL_Rect; overload;
+
+function SDL_ScaleSurfaceRect( SrcSurface : PSDL_Surface; SrcX1, SrcY1, SrcW, SrcH,
+  Width, Height : integer ) : PSDL_Surface;
+
+procedure SDL_ScrollY( DstSurface : PSDL_Surface; DifY : integer );
+
+procedure SDL_ScrollX( DstSurface : PSDL_Surface; DifX : integer );
+
+procedure SDL_RotateDeg( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Integer );
+
+procedure SDL_RotateRad( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Single );
+
+function ValidateSurfaceRect( DstSurface : PSDL_Surface; dstrect : PSDL_Rect ) : TSDL_Rect;
+
+// Fill Rect routine
+procedure SDL_FillRectAdd( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+
+procedure SDL_FillRectSub( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+
+procedure SDL_GradientFillRect( DstSurface : PSDL_Surface; const Rect : PSDL_Rect; const StartColor, EndColor : TSDL_Color; const Style : TGradientStyle );
+
+// NOTE for All SDL_2xblit... function : the dest surface must be 2x of the source surface!
+procedure SDL_2xBlit( Src, Dest : PSDL_Surface );
+
+procedure SDL_Scanline2xBlit( Src, Dest : PSDL_Surface );
+
+procedure SDL_50Scanline2xBlit( Src, Dest : PSDL_Surface );
+
+function SDL_PixelTestSurfaceVsRect( SrcSurface1 : PSDL_Surface; SrcRect1 :
+PSDL_Rect; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) :
+boolean;
+
+// Jason's boolean Surface functions
+procedure SDL_ORSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_ANDSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_GTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_LTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+function SDL_ClipLine(var x1,y1,x2,y2: Integer; ClipRect: PSDL_Rect) : boolean;
+
+implementation
+
+uses
+  Math;
+
+function SDL_PixelTest( SrcSurface1 : PSDL_Surface; SrcRect1 : PSDL_Rect; SrcSurface2 :
+  PSDL_Surface; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) : boolean;
+var
+  Src_Rect1, Src_Rect2 : TSDL_Rect;
+  right1, bottom1 : integer;
+  right2, bottom2 : integer;
+  Scan1Start, Scan2Start, ScanWidth, ScanHeight : cardinal;
+  Mod1, Mod2 : cardinal;
+  Addr1, Addr2 : cardinal;
+  BPP : cardinal;
+  Pitch1, Pitch2 : cardinal;
+  TransparentColor1, TransparentColor2 : cardinal;
+  tx, ty : cardinal;
+  StartTick : cardinal;
+  Color1, Color2 : cardinal;
+begin
+  Result := false;
+  if SrcRect1 = nil then
+  begin
+    with Src_Rect1 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface1.w;
+      h := SrcSurface1.h;
+    end;
+  end
+  else
+    Src_Rect1 := SrcRect1^;
+  if SrcRect2 = nil then
+  begin
+    with Src_Rect2 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface2.w;
+      h := SrcSurface2.h;
+    end;
+  end
+  else
+    Src_Rect2 := SrcRect2^;
+  with Src_Rect1 do
+  begin
+    Right1 := Left1 + w;
+    Bottom1 := Top1 + h;
+  end;
+  with Src_Rect2 do
+  begin
+    Right2 := Left2 + w;
+    Bottom2 := Top2 + h;
+  end;
+  if ( Left1 >= Right2 ) or ( Right1 <= Left2 ) or ( Top1 >= Bottom2 ) or ( Bottom1 <=
+    Top2 ) then
+    exit;
+  if Left1 <= Left2 then
+  begin
+    // 1. left, 2. right
+    Scan1Start := Src_Rect1.x + Left2 - Left1;
+    Scan2Start := Src_Rect2.x;
+    ScanWidth := Right1 - Left2;
+    with Src_Rect2 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end
+  else
+  begin
+    // 1. right, 2. left
+    Scan1Start := Src_Rect1.x;
+    Scan2Start := Src_Rect2.x + Left1 - Left2;
+    ScanWidth := Right2 - Left1;
+    with Src_Rect1 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end;
+  with SrcSurface1^ do
+  begin
+    Pitch1 := Pitch;
+    Addr1 := cardinal( Pixels );
+    inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+    with format^ do
+    begin
+      BPP := BytesPerPixel;
+      TransparentColor1 := colorkey;
+    end;
+  end;
+  with SrcSurface2^ do
+  begin
+    TransparentColor2 := format.colorkey;
+    Pitch2 := Pitch;
+    Addr2 := cardinal( Pixels );
+    inc( Addr2, Pitch2 * UInt32( Src_Rect2.y ) );
+  end;
+  Mod1 := Pitch1 - ( ScanWidth * BPP );
+  Mod2 := Pitch2 - ( ScanWidth * BPP );
+  inc( Addr1, BPP * Scan1Start );
+  inc( Addr2, BPP * Scan2Start );
+  if Top1 <= Top2 then
+  begin
+    // 1. up, 2. down
+    ScanHeight := Bottom1 - Top2;
+    if ScanHeight > Src_Rect2.h then
+      ScanHeight := Src_Rect2.h;
+    inc( Addr1, Pitch1 * UInt32( Top2 - Top1 ) );
+  end
+  else
+  begin
+    // 1. down, 2. up
+    ScanHeight := Bottom2 - Top1;
+    if ScanHeight > Src_Rect1.h then
+      ScanHeight := Src_Rect1.h;
+    inc( Addr2, Pitch2 * UInt32( Top1 - Top2 ) );
+  end;
+  case BPP of
+    1 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PByte( Addr1 )^ <> TransparentColor1 ) and ( PByte( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1 );
+          inc( Addr2 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    2 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PWord( Addr1 )^ <> TransparentColor1 ) and ( PWord( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 2 );
+          inc( Addr2, 2 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    3 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          Color1 := PLongWord( Addr1 )^ and $00FFFFFF;
+          Color2 := PLongWord( Addr2 )^ and $00FFFFFF;
+          if ( Color1 <> TransparentColor1 ) and ( Color2 <> TransparentColor2 )
+            then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 3 );
+          inc( Addr2, 3 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    4 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PLongWord( Addr1 )^ <> TransparentColor1 ) and ( PLongWord( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 4 );
+          inc( Addr2, 4 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+  end;
+end;
+
+function SDL_GetPixel( SrcSurface : PSDL_Surface; x : cardinal; y : cardinal ) : Uint32;
+var
+  bpp : UInt32;
+  p : PInteger;
+begin
+  bpp := SrcSurface.format.BytesPerPixel;
+  // Here p is the address to the pixel we want to retrieve
+  p := Pointer( Uint32( SrcSurface.pixels ) + UInt32( y ) * SrcSurface.pitch + UInt32( x ) *
+    bpp );
+  case bpp of
+    1 : result := PUint8( p )^;
+    2 : result := PUint16( p )^;
+    3 :
+      if ( SDL_BYTEORDER = SDL_BIG_ENDIAN ) then
+        result := PUInt8Array( p )[ 0 ] shl 16 or PUInt8Array( p )[ 1 ] shl 8 or
+          PUInt8Array( p )[ 2 ]
+      else
+        result := PUInt8Array( p )[ 0 ] or PUInt8Array( p )[ 1 ] shl 8 or
+          PUInt8Array( p )[ 2 ] shl 16;
+    4 : result := PUint32( p )^;
+  else
+    result := 0; // shouldn't happen, but avoids warnings
+  end;
+end;
+
+procedure SDL_PutPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+var
+  Addr, Pitch, BPP : cardinal;
+begin
+  Addr := cardinal( SrcSurface.Pixels );
+  Pitch := SrcSurface.Pitch;
+  BPP := SrcSurface.format.BytesPerPixel;
+  asm
+    mov eax, y
+    mul Pitch      // EAX := y * Pitch
+    add Addr, eax  // Addr:= Addr + (y * Pitch)
+    mov eax, x
+    mov ecx, Color
+    cmp BPP, 1
+    jne @Not1BPP
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x
+    mov [eax], cl
+    jmp @Quit
+   @Not1BPP:
+    cmp BPP, 2
+    jne @Not2BPP
+    mul BPP   // EAX := x * BPP
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * BPP
+    mov [eax], cx
+    jmp @Quit
+   @Not2BPP:
+    cmp BPP, 3
+    jne @Not3BPP
+    mul BPP   // EAX := x * BPP
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * BPP
+    mov edx, [eax]
+    and edx, $ff000000
+    or edx, ecx
+    mov [eax], edx
+    jmp @Quit
+   @Not3BPP:
+    mul BPP   // EAX := x * BPP
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * BPP
+    mov [eax], ecx
+   @Quit:
+  end;
+end;
+
+procedure SDL_AddPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+var
+  SrcColor, FinalColor : cardinal;
+  Addr, Pitch, Bits : cardinal;
+begin
+  if Color = 0 then
+    exit;
+  Addr := cardinal( SrcSurface.Pixels );
+  Pitch := SrcSurface.Pitch;
+  Bits := SrcSurface.format.BitsPerPixel;
+  asm
+    mov eax, y
+    mul Pitch      // EAX := y * Pitch
+    add Addr, eax  // Addr:= Addr + (y * Pitch)
+    mov eax, x
+    cmp Bits, 8
+    jne @Not8bit
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x
+    mov cl, [eax]
+    movzx ecx, cl
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, 3
+    and edx, 3
+    add ecx, edx
+    cmp ecx, 3
+    jbe @Skip1_8bit
+    mov ecx, 3
+   @Skip1_8bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $1c
+    and edx, $1c
+    add ecx, edx
+    cmp ecx, $1c
+    jbe @Skip2_8bit
+    mov ecx, $1c
+   @Skip2_8bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $e0
+    and edx, $e0
+    add ecx, edx
+    cmp ecx, $e0
+    jbe @Skip3_8bit
+    mov ecx, $e0
+   @Skip3_8bit:
+    or ecx, FinalColor
+    mov [eax], cl
+    jmp @Quit
+   @Not8bit:
+    cmp Bits, 15
+    jne @Not15bit
+    shl eax, 1
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * 2
+    mov ecx, [eax]
+    and ecx, $00007fff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $1f
+    and edx, $1f
+    add ecx, edx
+    cmp ecx, $1f
+    jbe @Skip1_15bit
+    mov ecx, $1f
+   @Skip1_15bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $03e0
+    and edx, $03e0
+    add ecx, edx
+    cmp ecx, $03e0
+    jbe @Skip2_15bit
+    mov ecx, $03e0
+   @Skip2_15bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $7c00
+    and edx, $7c00
+    add ecx, edx
+    cmp ecx, $7c00
+    jbe @Skip3_15bit
+    mov ecx, $7c00
+   @Skip3_15bit:
+    or ecx, FinalColor
+    mov [eax], cx
+    jmp @Quit
+   @Not15Bit:
+    cmp Bits, 16
+    jne @Not16bit
+    shl eax, 1
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * 2
+    mov ecx, [eax]
+    and ecx, $0000ffff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $1f
+    and edx, $1f
+    add ecx, edx
+    cmp ecx, $1f
+    jbe @Skip1_16bit
+    mov ecx, $1f
+   @Skip1_16bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $07e0
+    and edx, $07e0
+    add ecx, edx
+    cmp ecx, $07e0
+    jbe @Skip2_16bit
+    mov ecx, $07e0
+   @Skip2_16bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $f800
+    and edx, $f800
+    add ecx, edx
+    cmp ecx, $f800
+    jbe @Skip3_16bit
+    mov ecx, $f800
+   @Skip3_16bit:
+    or ecx, FinalColor
+    mov [eax], cx
+    jmp @Quit
+   @Not16Bit:
+    cmp Bits, 24
+    jne @Not24bit
+    mov ecx, 0
+    add ecx, eax
+    shl ecx, 1
+    add ecx, eax
+    mov eax, ecx
+    jmp @32bit
+   @Not24bit:
+    shl eax, 2
+   @32bit:
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x * 2
+    mov ecx, [eax]
+    mov FinalColor, ecx
+    and FinalColor, $ff000000
+    and ecx, $00ffffff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $000000ff
+    and edx, $000000ff
+    add ecx, edx
+    cmp ecx, $000000ff
+    jbe @Skip1_32bit
+    mov ecx, $000000ff
+   @Skip1_32bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $0000ff00
+    and edx, $0000ff00
+    add ecx, edx
+    cmp ecx, $0000ff00
+    jbe @Skip2_32bit
+    mov ecx, $0000ff00
+   @Skip2_32bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $00ff0000
+    and edx, $00ff0000
+    add ecx, edx
+    cmp ecx, $00ff0000
+    jbe @Skip3_32bit
+    mov ecx, $00ff0000
+   @Skip3_32bit:
+    or ecx, FinalColor
+    mov [eax], ecx
+   @Quit:
+  end;
+end;
+
+procedure SDL_SubPixel( SrcSurface : PSDL_Surface; x : integer; y : integer; Color :
+  cardinal );
+var
+  SrcColor, FinalColor : cardinal;
+  Addr, Pitch, Bits : cardinal;
+begin
+  if Color = 0 then
+    exit;
+  Addr := cardinal( SrcSurface.Pixels );
+  Pitch := SrcSurface.Pitch;
+  Bits := SrcSurface.format.BitsPerPixel;
+  asm
+    mov eax, y
+    mul Pitch      // EAX := y * Pitch
+    add Addr, eax  // Addr:= Addr + (y * Pitch)
+    mov eax, x
+    cmp Bits, 8
+    jne @Not8bit
+    add eax, Addr  // Now:   EAX:= Addr + (y * Pitch) + x
+    mov cl, [eax]
+    movzx ecx, cl
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, 3
+    and edx, 3
+    sub ecx, edx
+    jns @Skip1_8bit
+    mov ecx, 0
+   @Skip1_8bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $1c
+    and edx, $1c
+    sub ecx, edx
+    jns @Skip2_8bit
+    mov ecx, 0
+   @Skip2_8bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $e0
+    and edx, $e0
+    sub ecx, edx
+    jns @Skip3_8bit
+    mov ecx, 0
+   @Skip3_8bit:
+    or ecx, FinalColor
+    mov [eax], cl
+    jmp @Quit
+   @Not8bit:
+    cmp Bits, 15
+    jne @Not15bit
+    shl eax, 1
+    add eax, Addr
+    mov ecx, [eax]
+    and ecx, $00007fff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $1f
+    and edx, $1f
+    sub ecx, edx
+    jns @Skip1_15bit
+    mov ecx, 0
+   @Skip1_15bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $03e0
+    and edx, $03e0
+    sub ecx, edx
+    jns @Skip2_15bit
+    mov ecx, 0
+   @Skip2_15bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $7c00
+    and edx, $7c00
+    sub ecx, edx
+    jns @Skip3_15bit
+    mov ecx, 0
+   @Skip3_15bit:
+    or ecx, FinalColor
+    mov [eax], cx
+    jmp @Quit
+   @Not15Bit:
+    cmp Bits, 16
+    jne @Not16bit
+    shl eax, 1
+    add eax, Addr
+    mov ecx, [eax]
+    and ecx, $0000ffff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $1f
+    and edx, $1f
+    sub ecx, edx
+    jns @Skip1_16bit
+    mov ecx, 0
+   @Skip1_16bit:
+    mov FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $07e0
+    and edx, $07e0
+    sub ecx, edx
+    jns @Skip2_16bit
+    mov ecx, 0
+   @Skip2_16bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $f800
+    and edx, $f800
+    sub ecx, edx
+    jns @Skip3_16bit
+    mov ecx, 0
+   @Skip3_16bit:
+    or ecx, FinalColor
+    mov [eax], cx
+    jmp @Quit
+   @Not16Bit:
+    cmp Bits, 24
+    jne @Not24bit
+    mov ecx, 0
+    add ecx, eax
+    shl ecx, 1
+    add ecx, eax
+    mov eax, ecx
+    jmp @32bit
+   @Not24bit:
+    shl eax, 2
+   @32bit:
+    add eax, Addr
+    mov ecx, [eax]
+    mov FinalColor, ecx
+    and FinalColor, $ff000000
+    and ecx, $00ffffff
+    mov SrcColor, ecx
+    mov edx, Color
+    and ecx, $000000ff
+    and edx, $000000ff
+    sub ecx, edx
+    jns @Skip1_32bit
+    mov ecx, 0
+   @Skip1_32bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $0000ff00
+    and edx, $0000ff00
+    sub ecx, edx
+    jns @Skip2_32bit
+    mov ecx, 0
+   @Skip2_32bit:
+    or FinalColor, ecx
+    mov ecx, SrcColor
+    mov edx, Color
+    and ecx, $00ff0000
+    and edx, $00ff0000
+    sub ecx, edx
+    jns @Skip3_32bit
+    mov ecx, 0
+   @Skip3_32bit:
+    or ecx, FinalColor
+    mov [eax], ecx
+   @Quit:
+  end;
+end;
+
+// Draw a line between x1,y1 and x2,y2 to the given surface
+// NOTE: The surface must be locked before calling this!
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_PutPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_PutPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+// Draw a dashed line between x1,y1 and x2,y2 to the given surface
+// NOTE: The surface must be locked before calling this!
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal ; DashLength, DashSpace : byte );  overload;
+var
+  dx, dy, sdx, sdy, x, y, px, py, counter : integer; drawdash : boolean;
+begin
+  counter := 0;
+  drawdash := true; //begin line drawing with dash
+
+  //Avoid invalid user-passed dash parameters
+  if (DashLength < 1)
+  then DashLength := 1;
+  if (DashSpace < 1)
+  then DashSpace := 0;
+
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+      begin
+
+      //Alternate drawing dashes, or leaving spaces
+      if drawdash then
+        begin
+          SDL_PutPixel( DstSurface, px, py, Color );
+          inc(counter);
+          if (counter > DashLength-1) and (DashSpace > 0) then
+            begin
+              drawdash := false;
+              counter := 0;
+            end;
+        end
+      else //space
+        begin
+          inc(counter);
+          if counter > DashSpace-1 then
+            begin
+              drawdash := true;
+              counter := 0;
+            end;
+        end;
+
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+
+      //Alternate drawing dashes, or leaving spaces
+      if drawdash then
+        begin
+          SDL_PutPixel( DstSurface, px, py, Color );
+          inc(counter);
+          if (counter > DashLength-1) and (DashSpace > 0) then
+            begin
+              drawdash := false;
+              counter := 0;
+            end;
+        end
+      else //space
+        begin
+          inc(counter);
+          if counter > DashSpace-1 then
+            begin
+              drawdash := true;
+              counter := 0;
+            end;
+        end;
+
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+procedure SDL_AddLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_AddPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_AddPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+procedure SDL_SubLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_SubPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_SubPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+// This procedure works on 8, 15, 16, 24 and 32 bits color depth surfaces.
+// In 8 bit color depth mode the procedure works with the default packed
+//  palette (RRRGGGBB). It handles all clipping.
+procedure SDL_AddSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr : cardinal;
+  // TransparentColor: cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DstSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DstSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DstSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    //    TransparentColor := format.ColorKey;
+  end;
+  with DstSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DstSurface );
+  case bits of
+    8 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        cmp al, 0
+        je @SkipColor         // if AL=0 or AL=transparent color then skip everything
+        mov esp, eax          // ESP - source color
+        mov bl, [edi]         // BL := destination color
+        mov dl, bl            // DL := destination color
+        and ax, $03           // Adding BLUE
+        and bl, $03
+        add al, bl
+        cmp al, $03
+        jbe @Skip1
+        mov al, $03
+       @Skip1:
+        mov cl, al
+        mov eax, esp          // Adding GREEN
+        mov bl, dl
+        and al, $1c
+        and bl, $1c
+        add al, bl
+        cmp al, $1c
+        jbe @Skip2
+        mov al, $1c
+       @Skip2:
+        or cl, al
+        mov eax, esp          // Adding RED
+        mov bl, dl
+        and ax, $e0
+        and bx, $e0
+        add ax, bx
+        cmp ax, $e0
+        jbe @Skip3
+        mov al, $e0
+       @Skip3:
+        or cl, al
+        mov [edi], cl
+       @SkipColor:
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    15 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax          // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        mov esp, eax          // ESP - source color
+        mov bx, [edi]         // BX := destination color
+        mov dx, bx            // DX := destination color
+        and ax, $001F         // Adding BLUE
+        and bx, $001F
+        add ax, bx
+        cmp ax, $001F
+        jbe @Skip1
+        mov ax, $001F
+       @Skip1:
+        mov cx, ax
+        mov eax, esp          // Adding GREEN
+        mov bx, dx
+        and ax, $3E0
+        and bx, $3E0
+        add ax, bx
+        cmp ax, $3E0
+        jbe @Skip2
+        mov ax, $3E0
+       @Skip2:
+        or cx, ax
+        mov eax, esp          // Adding RED
+        mov bx, dx
+        and ax, $7C00
+        and bx, $7C00
+        add ax, bx
+        cmp ax, $7C00
+        jbe @Skip3
+        mov ax, $7C00
+       @Skip3:
+        or cx, ax
+        mov [edi], cx
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    16 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        mov esp, eax          // ESP - source color
+        mov bx, [edi]         // BX := destination color
+        mov dx, bx            // DX := destination color
+        and ax, $1F           // Adding BLUE
+        and bx, $1F
+        add ax, bx
+        cmp ax, $1F
+        jbe @Skip1
+        mov ax, $1F
+       @Skip1:
+        mov cx, ax
+        mov eax, esp          // Adding GREEN
+        mov bx, dx
+        and ax, $7E0
+        and bx, $7E0
+        add ax, bx
+        cmp ax, $7E0
+        jbe @Skip2
+        mov ax, $7E0
+       @Skip2:
+        or cx, ax
+        mov eax, esp          // Adding RED
+        mov bx, dx
+        and eax, $F800
+        and ebx, $F800
+        add eax, ebx
+        cmp eax, $F800
+        jbe @Skip3
+        mov ax, $F800
+       @Skip3:
+        or cx, ax
+        mov [edi], cx
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    24 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       add WorkX, ax         // WorkX := Src.w * 2
+       add WorkX, ax         // WorkX := Src.w * 3
+       @Loopx:
+        mov bl, [edi]         // BX := destination color
+        mov al, [esi]         // AX := source color
+        cmp al, 0
+        je @Skip              // if AL=0 then skip COMPONENT
+        mov ah, 0             // AX := COLOR COMPONENT
+        mov bh, 0
+        add bx, ax
+        cmp bx, $00ff
+        jb @Skip
+        mov bl, $ff
+       @Skip:
+        mov [edi], bl
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    32 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       shl ax, 2
+       mov WorkX, ax         // WorkX := Src.w * 4
+       @Loopx:
+        mov bl, [edi]         // BX := destination color
+        mov al, [esi]         // AX := source color
+        cmp al, 0
+        je @Skip              // if AL=0 then skip COMPONENT
+        mov ah, 0             // AX := COLOR COMPONENT
+        mov bh, 0
+        add bx, ax
+        cmp bx, $00ff
+        jb @Skip
+        mov bl, $ff
+       @Skip:
+        mov [edi], bl
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DstSurface );
+end;
+
+procedure SDL_SubSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr : cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DstSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DstSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DstSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+  end;
+  with DstSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := DstSurface.Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DstSurface );
+  case bits of
+    8 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        cmp al, 0
+        je @SkipColor         // if AL=0 then skip everything
+        mov esp, eax          // ESP - source color
+        mov bl, [edi]         // BL := destination color
+        mov dl, bl            // DL := destination color
+        and al, $03           // Subtract BLUE
+        and bl, $03
+        sub bl, al
+        jns @Skip1
+        mov bl, 0
+       @Skip1:
+        mov cl, bl
+        mov eax, esp          // Subtract GREEN
+        mov bl, dl
+        and al, $1c
+        and bl, $1c
+        sub bl, al
+        jns @Skip2
+        mov bl, 0
+       @Skip2:
+        or cl, bl
+        mov eax, esp          // Subtract RED
+        mov bl, dl
+        and ax, $e0
+        and bx, $e0
+        sub bx, ax
+        jns @Skip3
+        mov bl, 0
+       @Skip3:
+        or cl, bl
+        mov [edi], cl
+       @SkipColor:
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    15 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax          // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        mov esp, eax          // ESP - source color
+        mov bx, [edi]         // BX := destination color
+        mov dx, bx            // DX := destination color
+        and ax, $001F         // Subtract BLUE
+        and bx, $001F
+        sub bx, ax
+        jns @Skip1
+        mov bx, 0
+       @Skip1:
+        mov cx, bx
+        mov eax, esp          // Subtract GREEN
+        mov bx, dx
+        and ax, $3E0
+        and bx, $3E0
+        sub bx, ax
+        jns @Skip2
+        mov bx, 0
+       @Skip2:
+        or cx, bx
+        mov eax, esp          // Subtract RED
+        mov bx, dx
+        and ax, $7C00
+        and bx, $7C00
+        sub bx, ax
+        jns @Skip3
+        mov bx, 0
+       @Skip3:
+        or cx, bx
+        mov [edi], cx
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    16 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        mov esp, eax          // ESP - source color
+        mov bx, [edi]         // BX := destination color
+        mov dx, bx            // DX := destination color
+        and ax, $1F           // Subtracting BLUE
+        and bx, $1F
+        sub bx, ax
+        jns @Skip1
+        mov bx, 0
+       @Skip1:
+        mov cx, bx
+        mov eax, esp          // Adding GREEN
+        mov bx, dx
+        and ax, $7E0
+        and bx, $7E0
+        sub bx, ax
+        jns @Skip2
+        mov bx, 0
+       @Skip2:
+        or cx, bx
+        mov eax, esp          // Adding RED
+        mov bx, dx
+        and eax, $F800
+        and ebx, $F800
+        sub ebx, eax
+        jns @Skip3
+        mov bx, 0
+       @Skip3:
+        or cx, bx
+        mov [edi], cx
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    24 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       add WorkX, ax         // WorkX := Src.w * 2
+       add WorkX, ax         // WorkX := Src.w * 3
+       @Loopx:
+        mov bl, [edi]         // BX := destination color
+        mov al, [esi]         // AX := source color
+        cmp al, 0
+        je @Skip              // if AL=0 then skip COMPONENT
+        mov ah, 0             // AX := COLOR COMPONENT
+        mov bh, 0
+        sub bx, ax
+        jns @Skip
+        mov bl, 0
+       @Skip:
+        mov [edi], bl
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    32 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       shl ax, 2
+       mov WorkX, ax         // WorkX := Src.w * 4
+       @Loopx:
+        mov bl, [edi]         // BX := destination color
+        mov al, [esi]         // AX := source color
+        cmp al, 0
+        je @Skip              // if AL=0 then skip COMPONENT
+        mov ah, 0             // AX := COLOR COMPONENT
+        mov bh, 0
+        sub bx, ax
+        jns @Skip
+        mov bl, 0
+       @Skip:
+        mov [edi], bl
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DstSurface );
+end;
+
+procedure SDL_MonoSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect; Color : cardinal );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr : cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  SrcTransparentColor : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DstSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DstSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DstSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    SrcTransparentColor := format.colorkey;
+  end;
+  with DstSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := DstSurface.Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DstSurface );
+  case bits of
+    8 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      mov ecx, Color
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        movzx eax, al
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AL=Transparent color then skip everything
+        mov [edi], cl
+       @SkipColor:
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      end;
+    15, 16 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      mov ecx, Color
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        movzx eax, ax
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AX=Transparent color then skip everything
+        mov [edi], cx
+       @SkipColor:
+        inc esi
+        inc esi
+        inc edi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      end;
+    24 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov _ebx, ebx
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      mov ecx, Color
+      and ecx, $00ffffff
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov eax, [esi]         // EAX := source color
+        and eax, $00ffffff
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if EAX=Transparent color then skip everything
+        mov ebx, [edi]
+        and ebx, $ff000000
+        or ebx, ecx
+        mov [edi], ecx
+       @SkipColor:
+        add esi, 3
+        add edi, 3
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp, _esp
+      mov edi, _edi
+      mov esi, _esi
+      mov ebx, _ebx
+      end;
+    32 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      mov ecx, Color
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov eax, [esi]         // EAX := source color
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if EAX=Transparent color then skip everything
+        mov [edi], ecx
+       @SkipColor:
+        add esi, 4
+        add edi, 4
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp, _esp
+      mov edi, _edi
+      mov esi, _esi
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DstSurface );
+end;
+// TextureRect.w and TextureRect.h are not used.
+// The TextureSurface's size MUST larger than the drawing rectangle!!!
+
+procedure SDL_TexturedSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DstSurface : PSDL_Surface; DestRect : PSDL_Rect; Texture : PSDL_Surface;
+  TextureRect : PSDL_Rect );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr, TextAddr : cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod, TextMod : cardinal;
+  SrcTransparentColor : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DstSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DstSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DstSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    SrcTransparentColor := format.colorkey;
+  end;
+  with DstSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := DstSurface.Format.BitsPerPixel;
+  end;
+  with Texture^ do
+  begin
+    TextAddr := cardinal( Pixels ) + UInt32( TextureRect.y ) * Pitch +
+      UInt32( TextureRect.x ) * Format.BytesPerPixel;
+    TextMod := Pitch - Src.w * Format.BytesPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DstSurface );
+  SDL_LockSurface( Texture );
+  case bits of
+    8 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov _ebx, ebx
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ebx, TextAddr
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        movzx eax, al
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AL=Transparent color then skip everything
+        mov al, [ebx]
+        mov [edi], al
+       @SkipColor:
+        inc esi
+        inc edi
+        inc ebx
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       add ebx, TextMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx, _ebx
+      end;
+    15, 16 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ecx, TextAddr
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AL := source color
+        movzx eax, ax
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AL=Transparent color then skip everything
+        mov ax, [ecx]
+        mov [edi], ax
+       @SkipColor:
+        inc esi
+        inc esi
+        inc edi
+        inc edi
+        inc ecx
+        inc ecx
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       add ecx, TextMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      end;
+    24 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov _ebx, ebx
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ebx, TextAddr
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov eax, [esi]         // AL := source color
+        and eax, $00ffffff
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AL=Transparent color then skip everything
+        mov eax, [ebx]
+        and eax, $00ffffff
+        mov ecx, [edi]
+        and ecx, $ff000000
+        or ecx, eax
+        mov [edi], eax
+       @SkipColor:
+        add esi, 3
+        add edi, 3
+        add ebx, 3
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       add ebx, TextMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx, _ebx
+      end;
+    32 :
+      asm
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ecx, TextAddr
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov eax, [esi]         // AL := source color
+        cmp eax, SrcTransparentColor
+        je @SkipColor         // if AL=Transparent color then skip everything
+        mov eax, [ecx]
+        mov [edi], eax
+       @SkipColor:
+        add esi, 4
+        add edi, 4
+        add ecx, 4
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       add ecx, TextMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DstSurface );
+  SDL_UnlockSurface( Texture );
+end;
+
+procedure SDL_ZoomSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; DstRect : PSDL_Rect );
+var
+  xc, yc : cardinal;
+  rx, wx, ry, wy, ry16 : cardinal;
+  color : cardinal;
+  modx, mody : cardinal;
+begin
+  // Warning! No checks for surface pointers!!!
+  if srcrect = nil then
+    srcrect := @SrcSurface.clip_rect;
+  if dstrect = nil then
+    dstrect := @DstSurface.clip_rect;
+  if SDL_MustLock( SrcSurface ) then
+    SDL_LockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_LockSurface( DstSurface );
+  modx := trunc( ( srcrect.w / dstrect.w ) * 65536 );
+  mody := trunc( ( srcrect.h / dstrect.h ) * 65536 );
+  //rx := srcrect.x * 65536;
+  ry := srcrect.y * 65536;
+  wy := dstrect.y;
+  for yc := 0 to dstrect.h - 1 do
+  begin
+    rx := srcrect.x * 65536;
+    wx := dstrect.x;
+    ry16 := ry shr 16;
+    for xc := 0 to dstrect.w - 1 do
+    begin
+      color := SDL_GetPixel( SrcSurface, rx shr 16, ry16 );
+      SDL_PutPixel( DstSurface, wx, wy, color );
+      rx := rx + modx;
+      inc( wx );
+    end;
+    ry := ry + mody;
+    inc( wy );
+  end;
+  if SDL_MustLock( SrcSurface ) then
+    SDL_UnlockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_UnlockSurface( DstSurface );
+end;
+// Re-map a rectangular area into an area defined by four vertices
+// Converted from C to Pascal by KiCHY
+
+procedure SDL_WarpSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; UL, UR, LR, LL : PPoint );
+const
+  SHIFTS = 15; // Extend ints to limit round-off error (try 2 - 20)
+  THRESH = 1 shl SHIFTS; // Threshold for pixel size value
+  procedure CopySourceToDest( UL, UR, LR, LL : TPoint; x1, y1, x2, y2 : cardinal );
+  var
+    tm, lm, rm, bm, m : TPoint;
+    mx, my : cardinal;
+    cr : cardinal;
+  begin
+    // Does the destination area specify a single pixel?
+    if ( ( abs( ul.x - ur.x ) < THRESH ) and
+      ( abs( ul.x - lr.x ) < THRESH ) and
+      ( abs( ul.x - ll.x ) < THRESH ) and
+      ( abs( ul.y - ur.y ) < THRESH ) and
+      ( abs( ul.y - lr.y ) < THRESH ) and
+      ( abs( ul.y - ll.y ) < THRESH ) ) then
+    begin // Yes
+      cr := SDL_GetPixel( SrcSurface, ( x1 shr SHIFTS ), ( y1 shr SHIFTS ) );
+      SDL_PutPixel( DstSurface, ( ul.x shr SHIFTS ), ( ul.y shr SHIFTS ), cr );
+    end
+    else
+    begin // No
+      // Quarter the source and the destination, and then recurse
+      tm.x := ( ul.x + ur.x ) shr 1;
+      tm.y := ( ul.y + ur.y ) shr 1;
+      bm.x := ( ll.x + lr.x ) shr 1;
+      bm.y := ( ll.y + lr.y ) shr 1;
+      lm.x := ( ul.x + ll.x ) shr 1;
+      lm.y := ( ul.y + ll.y ) shr 1;
+      rm.x := ( ur.x + lr.x ) shr 1;
+      rm.y := ( ur.y + lr.y ) shr 1;
+      m.x := ( tm.x + bm.x ) shr 1;
+      m.y := ( tm.y + bm.y ) shr 1;
+      mx := ( x1 + x2 ) shr 1;
+      my := ( y1 + y2 ) shr 1;
+      CopySourceToDest( ul, tm, m, lm, x1, y1, mx, my );
+      CopySourceToDest( tm, ur, rm, m, mx, y1, x2, my );
+      CopySourceToDest( m, rm, lr, bm, mx, my, x2, y2 );
+      CopySourceToDest( lm, m, bm, ll, x1, my, mx, y2 );
+    end;
+  end;
+var
+  _UL, _UR, _LR, _LL : TPoint;
+  Rect_x, Rect_y, Rect_w, Rect_h : integer;
+begin
+  if SDL_MustLock( SrcSurface ) then
+    SDL_LockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_LockSurface( DstSurface );
+  if SrcRect = nil then
+  begin
+    Rect_x := 0;
+    Rect_y := 0;
+    Rect_w := ( SrcSurface.w - 1 ) shl SHIFTS;
+    Rect_h := ( SrcSurface.h - 1 ) shl SHIFTS;
+  end
+  else
+  begin
+    Rect_x := SrcRect.x;
+    Rect_y := SrcRect.y;
+    Rect_w := ( SrcRect.w - 1 ) shl SHIFTS;
+    Rect_h := ( SrcRect.h - 1 ) shl SHIFTS;
+  end;
+  // Shift all values to help reduce round-off error.
+  _ul.x := ul.x shl SHIFTS;
+  _ul.y := ul.y shl SHIFTS;
+  _ur.x := ur.x shl SHIFTS;
+  _ur.y := ur.y shl SHIFTS;
+  _lr.x := lr.x shl SHIFTS;
+  _lr.y := lr.y shl SHIFTS;
+  _ll.x := ll.x shl SHIFTS;
+  _ll.y := ll.y shl SHIFTS;
+  CopySourceToDest( _ul, _ur, _lr, _ll, Rect_x, Rect_y, Rect_w, Rect_h );
+  if SDL_MustLock( SrcSurface ) then
+    SDL_UnlockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_UnlockSurface( DstSurface );
+end;
+
+// flips a rectangle vertically on given surface
+procedure SDL_FlipRectV( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+var
+  TmpRect : TSDL_Rect;
+  Locked : boolean;
+  y, FlipLength, RowLength : integer;
+  Row1, Row2 : Pointer;
+  OneRow : TByteArray; // Optimize it if you wish
+begin
+  if DstSurface <> nil then
+  begin
+    if Rect = nil then
+    begin // if Rect=nil then we flip the whole surface
+      TmpRect := SDLRect( 0, 0, DstSurface.w, DstSurface.h );
+      Rect := @TmpRect;
+    end;
+    FlipLength := Rect^.h shr 1 - 1;
+    RowLength := Rect^.w * DstSurface^.format.BytesPerPixel;
+    if SDL_MustLock( DstSurface ) then
+    begin
+      Locked := true;
+      SDL_LockSurface( DstSurface );
+    end
+    else
+      Locked := false;
+    Row1 := pointer( cardinal( DstSurface^.Pixels ) + UInt32( Rect^.y ) *
+      DstSurface^.Pitch );
+    Row2 := pointer( cardinal( DstSurface^.Pixels ) + ( UInt32( Rect^.y ) + Rect^.h - 1 )
+      * DstSurface^.Pitch );
+    for y := 0 to FlipLength do
+    begin
+      Move( Row1^, OneRow, RowLength );
+      Move( Row2^, Row1^, RowLength );
+      Move( OneRow, Row2^, RowLength );
+      inc( cardinal( Row1 ), DstSurface^.Pitch );
+      dec( cardinal( Row2 ), DstSurface^.Pitch );
+    end;
+    if Locked then
+      SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+// flips a rectangle horizontally on given surface
+procedure SDL_FlipRectH( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+type
+  T24bit = packed array[ 0..2 ] of byte;
+  T24bitArray = packed array[ 0..8191 ] of T24bit;
+  P24bitArray = ^T24bitArray;
+  TLongWordArray = array[ 0..8191 ] of LongWord;
+  PLongWordArray = ^TLongWordArray;
+var
+  TmpRect : TSDL_Rect;
+  Row8bit : PByteArray;
+  Row16bit : PWordArray;
+  Row24bit : P24bitArray;
+  Row32bit : PLongWordArray;
+  y, x, RightSide, FlipLength : integer;
+  Pixel : cardinal;
+  Pixel24 : T24bit;
+  Locked : boolean;
+begin
+  if DstSurface <> nil then
+  begin
+    if Rect = nil then
+    begin
+      TmpRect := SDLRect( 0, 0, DstSurface.w, DstSurface.h );
+      Rect := @TmpRect;
+    end;
+    FlipLength := Rect^.w shr 1 - 1;
+    if SDL_MustLock( DstSurface ) then
+    begin
+      Locked := true;
+      SDL_LockSurface( DstSurface );
+    end
+    else
+      Locked := false;
+    case DstSurface^.format.BytesPerPixel of
+      1 :
+        begin
+          Row8Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row8Bit^[ x ];
+              Row8Bit^[ x ] := Row8Bit^[ RightSide ];
+              Row8Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( cardinal( Row8Bit ), DstSurface^.pitch );
+          end;
+        end;
+      2 :
+        begin
+          Row16Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row16Bit^[ x ];
+              Row16Bit^[ x ] := Row16Bit^[ RightSide ];
+              Row16Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( cardinal( Row16Bit ), DstSurface^.pitch );
+          end;
+        end;
+      3 :
+        begin
+          Row24Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel24 := Row24Bit^[ x ];
+              Row24Bit^[ x ] := Row24Bit^[ RightSide ];
+              Row24Bit^[ RightSide ] := Pixel24;
+              dec( RightSide );
+            end;
+            inc( cardinal( Row24Bit ), DstSurface^.pitch );
+          end;
+        end;
+      4 :
+        begin
+          Row32Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row32Bit^[ x ];
+              Row32Bit^[ x ] := Row32Bit^[ RightSide ];
+              Row32Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( cardinal( Row32Bit ), DstSurface^.pitch );
+          end;
+        end;
+    end;
+    if Locked then
+      SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+// Use with caution! The procedure allocates memory for TSDL_Rect and return with its pointer.
+// But you MUST free it after you don't need it anymore!!!
+function PSDLRect( aLeft, aTop, aWidth, aHeight : integer ) : PSDL_Rect;
+var
+  Rect : PSDL_Rect;
+begin
+  New( Rect );
+  with Rect^ do
+  begin
+    x := aLeft;
+    y := aTop;
+    w := aWidth;
+    h := aHeight;
+  end;
+  Result := Rect;
+end;
+
+function SDLRect( aLeft, aTop, aWidth, aHeight : integer ) : TSDL_Rect;
+begin
+  with result do
+  begin
+    x := aLeft;
+    y := aTop;
+    w := aWidth;
+    h := aHeight;
+  end;
+end;
+
+function SDLRect( aRect : TRect ) : TSDL_Rect;
+begin
+  with aRect do
+    result := SDLRect( Left, Top, Right - Left, Bottom - Top );
+end;
+
+procedure SDL_Stretch8( Surface, Dst_Surface : PSDL_Surface; x1, x2, y1, y2, yr, yw,
+  depth : integer );
+var
+  dx, dy, e, d, dx2 : integer;
+  src_pitch, dst_pitch : uint16;
+  src_pixels, dst_pixels : PUint8;
+begin
+  if ( yw >= dst_surface^.h ) then
+    exit;
+  dx := ( x2 - x1 );
+  dy := ( y2 - y1 );
+  dy := dy shl 1;
+  e := dy - dx;
+  dx2 := dx shl 1;
+  src_pitch := Surface^.pitch;
+  dst_pitch := dst_surface^.pitch;
+  src_pixels := PUint8( integer( Surface^.pixels ) + yr * src_pitch + y1 * depth );
+  dst_pixels := PUint8( integer( dst_surface^.pixels ) + yw * dst_pitch + x1 *
+    depth );
+  for d := 0 to dx - 1 do
+  begin
+    move( src_pixels^, dst_pixels^, depth );
+    while ( e >= 0 ) do
+    begin
+      inc( src_pixels, depth );
+      e := e - dx2;
+    end;
+    inc( dst_pixels, depth );
+    e := e + dy;
+  end;
+end;
+
+function sign( x : integer ) : integer;
+begin
+  if x > 0 then
+    result := 1
+  else
+    result := -1;
+end;
+
+// Stretches a part of a surface
+function SDL_ScaleSurfaceRect( SrcSurface : PSDL_Surface; SrcX1, SrcY1, SrcW, SrcH,
+  Width, Height : integer ) : PSDL_Surface;
+var
+  dst_surface : PSDL_Surface;
+  dx, dy, e, d, dx2, srcx2, srcy2 : integer;
+  destx1, desty1 : integer;
+begin
+  srcx2 := srcx1 + SrcW;
+  srcy2 := srcy1 + SrcH;
+  result := nil;
+  destx1 := 0;
+  desty1 := 0;
+  dx := abs( integer( Height - desty1 ) );
+  dy := abs( integer( SrcY2 - SrcY1 ) );
+  e := ( dy shl 1 ) - dx;
+  dx2 := dx shl 1;
+  dy := dy shl 1;
+  dst_surface := SDL_CreateRGBSurface( SDL_HWPALETTE, width - destx1, Height -
+      desty1,
+      SrcSurface^.Format^.BitsPerPixel,
+      SrcSurface^.Format^.RMask,
+      SrcSurface^.Format^.GMask,
+      SrcSurface^.Format^.BMask,
+      SrcSurface^.Format^.AMask );
+  if ( dst_surface^.format^.BytesPerPixel = 1 ) then
+    SDL_SetColors( dst_surface, @SrcSurface^.format^.palette^.colors^[ 0 ], 0, 256 );
+  SDL_SetColorKey( dst_surface, sdl_srccolorkey, SrcSurface^.format^.colorkey );
+  if ( SDL_MustLock( dst_surface ) ) then
+    if ( SDL_LockSurface( dst_surface ) < 0 ) then
+      exit;
+  for d := 0 to dx - 1 do
+  begin
+    SDL_Stretch8( SrcSurface, dst_surface, destx1, Width, SrcX1, SrcX2, SrcY1, desty1,
+      SrcSurface^.format^.BytesPerPixel );
+    while e >= 0 do
+    begin
+      inc( SrcY1 );
+      e := e - dx2;
+    end;
+    inc( desty1 );
+    e := e + dy;
+  end;
+  if SDL_MUSTLOCK( dst_surface ) then
+    SDL_UnlockSurface( dst_surface );
+  result := dst_surface;
+end;
+
+procedure SDL_ScrollY( DstSurface : PSDL_Surface; DifY : integer );
+var
+  r1, r2 : TSDL_Rect;
+  //buffer: PSDL_Surface;
+  YPos : Integer;
+begin
+  if ( DstSurface <> nil ) and ( DifY <> 0 ) then
+  begin
+    //if DifY > 0 then // going up
+    //begin
+    ypos := 0;
+    r1.x := 0;
+    r2.x := 0;
+    r1.w := DstSurface.w;
+    r2.w := DstSurface.w;
+    r1.h := DifY;
+    r2.h := DifY;
+    while ypos < DstSurface.h do
+    begin
+      r1.y := ypos;
+      r2.y := ypos + DifY;
+      SDL_BlitSurface( DstSurface, @r2, DstSurface, @r1 );
+      ypos := ypos + DifY;
+    end;
+    //end
+    //else
+    //begin // Going Down
+    //end;
+  end;
+end;
+
+procedure SDL_ScrollX( DstSurface : PSDL_Surface; DifX : integer );
+var
+  r1, r2 : TSDL_Rect;
+  buffer : PSDL_Surface;
+begin
+  if ( DstSurface <> nil ) and ( DifX <> 0 ) then
+  begin
+    buffer := SDL_CreateRGBSurface( SDL_HWSURFACE, ( DstSurface^.w - DifX ) * 2,
+      DstSurface^.h * 2,
+      DstSurface^.Format^.BitsPerPixel,
+      DstSurface^.Format^.RMask,
+      DstSurface^.Format^.GMask,
+      DstSurface^.Format^.BMask,
+      DstSurface^.Format^.AMask );
+    if buffer <> nil then
+    begin
+      if ( buffer^.format^.BytesPerPixel = 1 ) then
+        SDL_SetColors( buffer, @DstSurface^.format^.palette^.colors^[ 0 ], 0, 256 );
+      r1 := SDLRect( DifX, 0, buffer^.w, buffer^.h );
+      r2 := SDLRect( 0, 0, buffer^.w, buffer^.h );
+      SDL_BlitSurface( DstSurface, @r1, buffer, @r2 );
+      SDL_BlitSurface( buffer, @r2, DstSurface, @r2 );
+      SDL_FreeSurface( buffer );
+    end;
+  end;
+end;
+
+procedure SDL_RotateRad( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Single );
+var
+  aSin, aCos : Single;
+  MX, MY, DX, DY, NX, NY, SX, SY, OX, OY, Width, Height, TX, TY, RX, RY, ROX, ROY : Integer;
+  Colour, TempTransparentColour : UInt32;
+  MAXX, MAXY : Integer;
+begin
+  // Rotate the surface to the target surface.
+  TempTransparentColour := SrcSurface.format.colorkey;
+  if srcRect.w > srcRect.h then
+  begin
+    Width := srcRect.w;
+    Height := srcRect.w;
+  end
+  else
+  begin
+    Width := srcRect.h;
+    Height := srcRect.h;
+  end;
+
+  maxx := DstSurface.w;
+  maxy := DstSurface.h;
+  aCos := cos( Angle );
+  aSin := sin( Angle );
+
+  Width := round( abs( srcrect.h * acos ) + abs( srcrect.w * asin ) );
+  Height := round( abs( srcrect.h * asin ) + abs( srcrect.w * acos ) );
+
+  OX := Width div 2;
+  OY := Height div 2; ;
+  MX := ( srcRect.x + ( srcRect.x + srcRect.w ) ) div 2;
+  MY := ( srcRect.y + ( srcRect.y + srcRect.h ) ) div 2;
+  ROX := ( -( srcRect.w div 2 ) ) + Offsetx;
+  ROY := ( -( srcRect.h div 2 ) ) + OffsetY;
+  Tx := ox + round( ROX * aSin - ROY * aCos );
+  Ty := oy + round( ROY * aSin + ROX * aCos );
+  SX := 0;
+  for DX := DestX - TX to DestX - TX + ( width ) do
+  begin
+    Inc( SX );
+    SY := 0;
+    for DY := DestY - TY to DestY - TY + ( Height ) do
+    begin
+      RX := SX - OX;
+      RY := SY - OY;
+      NX := round( mx + RX * aSin + RY * aCos ); //
+      NY := round( my + RY * aSin - RX * aCos ); //
+      // Used for testing only
+     //SDL_PutPixel(DstSurface.SDLSurfacePointer,DX,DY,0);
+      if ( ( DX > 0 ) and ( DX < MAXX ) ) and ( ( DY > 0 ) and ( DY < MAXY ) ) then
+      begin
+        if ( NX >= srcRect.x ) and ( NX <= srcRect.x + srcRect.w ) then
+        begin
+          if ( NY >= srcRect.y ) and ( NY <= srcRect.y + srcRect.h ) then
+          begin
+            Colour := SDL_GetPixel( SrcSurface, NX, NY );
+            if Colour <> TempTransparentColour then
+            begin
+              SDL_PutPixel( DstSurface, DX, DY, Colour );
+            end;
+          end;
+        end;
+      end;
+      inc( SY );
+    end;
+  end;
+end;
+
+procedure SDL_RotateDeg( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Integer );
+begin
+  SDL_RotateRad( DstSurface, SrcSurface, SrcRect, DestX, DestY, OffsetX, OffsetY, DegToRad( Angle ) );
+end;
+
+function ValidateSurfaceRect( DstSurface : PSDL_Surface; dstrect : PSDL_Rect ) : TSDL_Rect;
+var
+  RealRect : TSDL_Rect;
+  OutOfRange : Boolean;
+begin
+  OutOfRange := false;
+  if dstrect = nil then
+  begin
+    RealRect.x := 0;
+    RealRect.y := 0;
+    RealRect.w := DstSurface.w;
+    RealRect.h := DstSurface.h;
+  end
+  else
+  begin
+    if dstrect.x < DstSurface.w then
+    begin
+      RealRect.x := dstrect.x;
+    end
+    else if dstrect.x < 0 then
+    begin
+      realrect.x := 0;
+    end
+    else
+    begin
+      OutOfRange := True;
+    end;
+    if dstrect.y < DstSurface.h then
+    begin
+      RealRect.y := dstrect.y;
+    end
+    else if dstrect.y < 0 then
+    begin
+      realrect.y := 0;
+    end
+    else
+    begin
+      OutOfRange := True;
+    end;
+    if OutOfRange = False then
+    begin
+      if realrect.x + dstrect.w <= DstSurface.w then
+      begin
+        RealRect.w := dstrect.w;
+      end
+      else
+      begin
+        RealRect.w := dstrect.w - realrect.x;
+      end;
+      if realrect.y + dstrect.h <= DstSurface.h then
+      begin
+        RealRect.h := dstrect.h;
+      end
+      else
+      begin
+        RealRect.h := dstrect.h - realrect.y;
+      end;
+    end;
+  end;
+  if OutOfRange = False then
+  begin
+    result := realrect;
+  end
+  else
+  begin
+    realrect.w := 0;
+    realrect.h := 0;
+    realrect.x := 0;
+    realrect.y := 0;
+    result := realrect;
+  end;
+end;
+
+procedure SDL_FillRectAdd( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+var
+  RealRect : TSDL_Rect;
+  Addr : pointer;
+  ModX, BPP : cardinal;
+  x, y, R, G, B, SrcColor : cardinal;
+begin
+  RealRect := ValidateSurfaceRect( DstSurface, DstRect );
+  if ( RealRect.w > 0 ) and ( RealRect.h > 0 ) then
+  begin
+    SDL_LockSurface( DstSurface );
+    BPP := DstSurface.format.BytesPerPixel;
+    with DstSurface^ do
+    begin
+      Addr := pointer( UInt32( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+      ModX := Pitch - UInt32( RealRect.w ) * BPP;
+    end;
+    case DstSurface.format.BitsPerPixel of
+      8 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $E0 + Color and $E0;
+              G := SrcColor and $1C + Color and $1C;
+              B := SrcColor and $03 + Color and $03;
+              if R > $E0 then
+                R := $E0;
+              if G > $1C then
+                G := $1C;
+              if B > $03 then
+                B := $03;
+              PUInt8( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      15 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $7C00 + Color and $7C00;
+              G := SrcColor and $03E0 + Color and $03E0;
+              B := SrcColor and $001F + Color and $001F;
+              if R > $7C00 then
+                R := $7C00;
+              if G > $03E0 then
+                G := $03E0;
+              if B > $001F then
+                B := $001F;
+              PUInt16( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      16 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $F800 + Color and $F800;
+              G := SrcColor and $07C0 + Color and $07C0;
+              B := SrcColor and $001F + Color and $001F;
+              if R > $F800 then
+                R := $F800;
+              if G > $07C0 then
+                G := $07C0;
+              if B > $001F then
+                B := $001F;
+              PUInt16( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      24 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 + Color and $00FF0000;
+              G := SrcColor and $0000FF00 + Color and $0000FF00;
+              B := SrcColor and $000000FF + Color and $000000FF;
+              if R > $FF0000 then
+                R := $FF0000;
+              if G > $00FF00 then
+                G := $00FF00;
+              if B > $0000FF then
+                B := $0000FF;
+              PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      32 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 + Color and $00FF0000;
+              G := SrcColor and $0000FF00 + Color and $0000FF00;
+              B := SrcColor and $000000FF + Color and $000000FF;
+              if R > $FF0000 then
+                R := $FF0000;
+              if G > $00FF00 then
+                G := $00FF00;
+              if B > $0000FF then
+                B := $0000FF;
+              PUInt32( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+    end;
+    SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+procedure SDL_FillRectSub( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+var
+  RealRect : TSDL_Rect;
+  Addr : pointer;
+  ModX, BPP : cardinal;
+  x, y, R, G, B, SrcColor : cardinal;
+begin
+  RealRect := ValidateSurfaceRect( DstSurface, DstRect );
+  if ( RealRect.w > 0 ) and ( RealRect.h > 0 ) then
+  begin
+    SDL_LockSurface( DstSurface );
+    BPP := DstSurface.format.BytesPerPixel;
+    with DstSurface^ do
+    begin
+      Addr := pointer( UInt32( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+      ModX := Pitch - UInt32( RealRect.w ) * BPP;
+    end;
+    case DstSurface.format.BitsPerPixel of
+      8 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $E0 - Color and $E0;
+              G := SrcColor and $1C - Color and $1C;
+              B := SrcColor and $03 - Color and $03;
+              if R > $E0 then
+                R := 0;
+              if G > $1C then
+                G := 0;
+              if B > $03 then
+                B := 0;
+              PUInt8( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      15 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $7C00 - Color and $7C00;
+              G := SrcColor and $03E0 - Color and $03E0;
+              B := SrcColor and $001F - Color and $001F;
+              if R > $7C00 then
+                R := 0;
+              if G > $03E0 then
+                G := 0;
+              if B > $001F then
+                B := 0;
+              PUInt16( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      16 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $F800 - Color and $F800;
+              G := SrcColor and $07C0 - Color and $07C0;
+              B := SrcColor and $001F - Color and $001F;
+              if R > $F800 then
+                R := 0;
+              if G > $07C0 then
+                G := 0;
+              if B > $001F then
+                B := 0;
+              PUInt16( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      24 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 - Color and $00FF0000;
+              G := SrcColor and $0000FF00 - Color and $0000FF00;
+              B := SrcColor and $000000FF - Color and $000000FF;
+              if R > $FF0000 then
+                R := 0;
+              if G > $00FF00 then
+                G := 0;
+              if B > $0000FF then
+                B := 0;
+              PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+      32 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 - Color and $00FF0000;
+              G := SrcColor and $0000FF00 - Color and $0000FF00;
+              B := SrcColor and $000000FF - Color and $000000FF;
+              if R > $FF0000 then
+                R := 0;
+              if G > $00FF00 then
+                G := 0;
+              if B > $0000FF then
+                B := 0;
+              PUInt32( Addr )^ := R or G or B;
+              inc( UInt32( Addr ), BPP );
+            end;
+            inc( UInt32( Addr ), ModX );
+          end;
+        end;
+    end;
+    SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+procedure SDL_GradientFillRect( DstSurface : PSDL_Surface; const Rect : PSDL_Rect; const StartColor, EndColor : TSDL_Color; const Style : TGradientStyle );
+var
+  FBC : array[ 0..255 ] of Cardinal;
+  // temp vars
+  i, YR, YG, YB, SR, SG, SB, DR, DG, DB : Integer;
+
+  TempStepV, TempStepH : Single;
+  TempLeft, TempTop, TempHeight, TempWidth : integer;
+  TempRect : TSDL_Rect;
+
+begin
+  // calc FBC
+  YR := StartColor.r;
+  YG := StartColor.g;
+  YB := StartColor.b;
+  SR := YR;
+  SG := YG;
+  SB := YB;
+  DR := EndColor.r - SR;
+  DG := EndColor.g - SG;
+  DB := EndColor.b - SB;
+
+  for i := 0 to 255 do
+  begin
+    FBC[ i ] := SDL_MapRGB( DstSurface.format, YR, YG, YB );
+    YR := SR + round( DR / 255 * i );
+    YG := SG + round( DG / 255 * i );
+    YB := SB + round( DB / 255 * i );
+  end;
+
+  //  if aStyle = 1 then begin
+  TempStepH := Rect.w / 255;
+  TempStepV := Rect.h / 255;
+  TempHeight := Trunc( TempStepV + 1 );
+  TempWidth := Trunc( TempStepH + 1 );
+  TempTop := 0;
+  TempLeft := 0;
+  TempRect.x := Rect.x;
+  TempRect.y := Rect.y;
+  TempRect.h := Rect.h;
+  TempRect.w := Rect.w;
+
+  case Style of
+    gsHorizontal :
+      begin
+        TempRect.h := TempHeight;
+        for i := 0 to 255 do
+        begin
+          TempRect.y := Rect.y + TempTop;
+          SDL_FillRect( DstSurface, @TempRect, FBC[ i ] );
+          TempTop := Trunc( TempStepV * i );
+        end;
+      end;
+    gsVertical :
+      begin
+        TempRect.w := TempWidth;
+        for i := 0 to 255 do
+        begin
+          TempRect.x := Rect.x + TempLeft;
+          SDL_FillRect( DstSurface, @TempRect, FBC[ i ] );
+          TempLeft := Trunc( TempStepH * i );
+        end;
+      end;
+  end;
+end;
+
+procedure SDL_2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
+  SrcPitch, DestPitch, x, y, w, h : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := UInt32( Src.Pixels );
+  WriteRow := UInt32( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  w := Src.w;
+  h := Src.h;
+
+  case Src.format.BytesPerPixel of
+    1 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov al, [ecx] // PUInt8(WriteAddr)^ := PUInt8(ReadAddr)^;
+             mov [edx], al
+             mov [edx + 1], al // PUInt8(WriteAddr + 1)^ := PUInt8(ReadAddr)^;
+             mov [edx + ebx], al // PUInt8(WriteAddr + DestPitch)^ := PUInt8(ReadAddr)^;
+             mov [edx + ebx + 1], al // PUInt8(WriteAddr + DestPitch + 1)^ := PUInt8(ReadAddr)^;
+
+             inc ecx // inc(ReadAddr);
+             add edx, 2 // inc(WriteAddr, 2);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    2 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov ax, [ecx] // PUInt16(WriteAddr)^ := PUInt16(ReadAddr)^;
+             mov [edx], ax
+             mov [edx + 2], ax // PUInt16(WriteAddr + 2)^ := PUInt16(ReadAddr)^;
+             mov [edx + ebx], ax // PUInt16(WriteAddr + DestPitch)^ := PUInt16(ReadAddr)^;
+             mov [edx + ebx + 2], ax // PUInt16(WriteAddr + DestPitch + 2)^ := PUInt16(ReadAddr)^;
+
+             add ecx, 2 // inc(ReadAddr, 2);
+             add edx, 4 // inc(WriteAddr, 4);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    3 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov eax, [ecx] // (PUInt32(WriteAddr)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             and eax, $00ffffff
+             and dword ptr [edx], $ff000000
+             or [edx], eax
+             and dword ptr [edx + 3], $00ffffff // (PUInt32(WriteAddr + 3)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + 3], eax
+             and dword ptr [edx + ebx], $00ffffff // (PUInt32(WriteAddr + DestPitch)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + ebx], eax
+             and dword ptr [edx + ebx + 3], $00ffffff // (PUInt32(WriteAddr + DestPitch + 3)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + ebx + 3], eax
+
+             add ecx, 3 // inc(ReadAddr, 3);
+             add edx, 6 // inc(WriteAddr, 6);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    4 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov eax, [ecx] // PUInt32(WriteAddr)^ := PUInt32(ReadAddr)^;
+             mov [edx], eax
+             mov [edx + 4], eax // PUInt32(WriteAddr + 4)^ := PUInt32(ReadAddr)^;
+             mov [edx + ebx], eax // PUInt32(WriteAddr + DestPitch)^ := PUInt32(ReadAddr)^;
+             mov [edx + ebx + 4], eax // PUInt32(WriteAddr + DestPitch + 4)^ := PUInt32(ReadAddr)^;
+
+             add ecx, 4 // inc(ReadAddr, 4);
+             add edx, 8 // inc(WriteAddr, 8);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+procedure SDL_Scanline2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
+  SrcPitch, DestPitch, x, y, w, h : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := UInt32( Src.Pixels );
+  WriteRow := UInt32( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  w := Src.w;
+  h := Src.h;
+
+  case Src.format.BytesPerPixel of
+    1 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+
+           @LoopX:
+             mov al, [ecx] // PUInt8(WriteAddr)^ := PUInt8(ReadAddr)^;
+             mov [edx], al
+             mov [edx + 1], al // PUInt8(WriteAddr + 1)^ := PUInt8(ReadAddr)^;
+
+             inc ecx // inc(ReadAddr);
+             add edx, 2 // inc(WriteAddr, 2);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    2 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+
+           @LoopX:
+             mov ax, [ecx] // PUInt16(WriteAddr)^ := PUInt16(ReadAddr)^;
+             mov [edx], ax
+             mov [edx + 2], eax // PUInt16(WriteAddr + 2)^ := PUInt16(ReadAddr)^;
+
+             add ecx, 2 // inc(ReadAddr, 2);
+             add edx, 4 // inc(WriteAddr, 4);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    3 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+
+           @LoopX:
+             mov eax, [ecx] // (PUInt32(WriteAddr)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             and eax, $00ffffff
+             and dword ptr [edx], $ff000000
+             or [edx], eax
+             and dword ptr [edx + 3], $00ffffff // (PUInt32(WriteAddr + 3)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + 3], eax
+
+             add ecx, 3 // inc(ReadAddr, 3);
+             add edx, 6 // inc(WriteAddr, 6);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    4 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+
+           @LoopX:
+             mov eax, [ecx] // PUInt32(WriteAddr)^ := PUInt32(ReadAddr)^;
+             mov [edx], eax
+             mov [edx + 4], eax // PUInt32(WriteAddr + 4)^ := PUInt32(ReadAddr)^;
+
+             add ecx, 4 // inc(ReadAddr, 4);
+             add edx, 8 // inc(WriteAddr, 8);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+procedure SDL_50Scanline2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
+  SrcPitch, DestPitch, x, y, w, h : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := UInt32( Src.Pixels );
+  WriteRow := UInt32( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  w := Src.w;
+  h := Src.h;
+
+  case Src.format.BitsPerPixel of
+    8 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov al, [ecx] // PUInt8(WriteAddr)^ := PUInt8(ReadAddr)^;
+             mov [edx], al
+             mov [edx + 1], al // PUInt8(WriteAddr + 1)^ := PUInt8(ReadAddr)^;
+             shr al, 1
+             and al, $6d
+             mov [edx + ebx], al // PUInt8(WriteAddr + DestPitch)^ := PUInt8(ReadAddr)^;
+             mov [edx + ebx + 1], al // PUInt8(WriteAddr + DestPitch + 1)^ := PUInt8(ReadAddr)^;
+
+             inc ecx // inc(ReadAddr);
+             add edx, 2 // inc(WriteAddr, 2);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    15 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov ax, [ecx] // PUInt16(WriteAddr)^ := PUInt16(ReadAddr)^;
+             mov [edx], ax
+             mov [edx + 2], ax // PUInt16(WriteAddr + 2)^ := PUInt16(ReadAddr)^;
+             shr ax, 1
+             and ax, $3def
+             mov [edx + ebx], ax // PUInt16(WriteAddr + DestPitch)^ := PUInt16(ReadAddr)^;
+             mov [edx + ebx + 2], ax // PUInt16(WriteAddr + DestPitch + 2)^ := PUInt16(ReadAddr)^;
+
+             add ecx, 2 // inc(ReadAddr, 2);
+             add edx, 4 // inc(WriteAddr, 4);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    16 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov ax, [ecx] // PUInt16(WriteAddr)^ := PUInt16(ReadAddr)^;
+             mov [edx], ax
+             mov [edx + 2], ax // PUInt16(WriteAddr + 2)^ := PUInt16(ReadAddr)^;
+             shr ax, 1
+             and ax, $7bef
+             mov [edx + ebx], ax // PUInt16(WriteAddr + DestPitch)^ := PUInt16(ReadAddr)^;
+             mov [edx + ebx + 2], ax // PUInt16(WriteAddr + DestPitch + 2)^ := PUInt16(ReadAddr)^;
+
+             add ecx, 2 // inc(ReadAddr, 2);
+             add edx, 4 // inc(WriteAddr, 4);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    24 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov eax, [ecx] // (PUInt32(WriteAddr)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             and eax, $00ffffff
+             and dword ptr [edx], $ff000000
+             or [edx], eax
+             and dword ptr [edx + 3], $00ffffff // (PUInt32(WriteAddr + 3)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + 3], eax
+             shr eax, 1
+             and eax, $007f7f7f
+             and dword ptr [edx + ebx], $00ffffff // (PUInt32(WriteAddr + DestPitch)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + ebx], eax
+             and dword ptr [edx + ebx + 3], $00ffffff // (PUInt32(WriteAddr + DestPitch + 3)^ and $ff000000) or (PUInt32(ReadAddr)^ and $00ffffff);
+             or [edx + ebx + 3], eax
+
+             add ecx, 3 // inc(ReadAddr, 3);
+             add edx, 6 // inc(WriteAddr, 6);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+    32 :
+      asm
+         push ebx
+         mov eax, h // for y := 1 to Src.h do
+         mov y, eax
+         @LoopY:
+           mov eax, ReadRow // ReadAddr := ReadRow;
+           mov ReadAddr, eax
+
+           mov eax, WriteRow // WriteAddr := WriteRow;
+           mov WriteAddr, eax
+
+           mov eax, w // for x := 1 to Src.w do
+           mov x, eax
+
+           mov ecx, ReadAddr
+           mov edx, WriteAddr
+           mov ebx, DestPitch
+
+           @LoopX:
+             mov eax, [ecx] // PUInt32(WriteAddr)^ := PUInt32(ReadAddr)^;
+             mov [edx], eax
+             mov [edx + 4], eax // PUInt32(WriteAddr + 4)^ := PUInt32(ReadAddr)^;
+             shr eax, 1
+             and eax, $7f7f7f7f
+             mov [edx + ebx], eax // PUInt32(WriteAddr + DestPitch)^ := PUInt32(ReadAddr)^;
+             mov [edx + ebx + 4], eax // PUInt32(WriteAddr + DestPitch + 4)^ := PUInt32(ReadAddr)^;
+
+             add ecx, 4 // inc(ReadAddr, 4);
+             add edx, 8 // inc(WriteAddr, 8);
+
+             dec x
+           jnz @LoopX
+
+           mov eax, SrcPitch // inc(UInt32(ReadRow), SrcPitch);
+           add ReadRow, eax
+
+           mov eax, DestPitch // inc(UInt32(WriteRow), DestPitch * 2);
+           add WriteRow, eax
+           add WriteRow, eax
+
+           dec y
+         jnz @LoopY
+         pop ebx
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+function SDL_PixelTestSurfaceVsRect( SrcSurface1 : PSDL_Surface; SrcRect1 : PSDL_Rect; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) :
+boolean;
+var
+  Src_Rect1, Src_Rect2 : TSDL_Rect;
+  right1, bottom1 : integer;
+  right2, bottom2 : integer;
+  Scan1Start, Scan2Start, ScanWidth, ScanHeight : cardinal;
+  Mod1: cardinal;
+  Addr1 : cardinal;
+  BPP : cardinal;
+  Pitch1 : cardinal;
+  TransparentColor1 : cardinal;
+  tx, ty : cardinal;
+  StartTick : cardinal;
+  Color1 : cardinal;
+begin
+  Result := false;
+  if SrcRect1 = nil then
+  begin
+    with Src_Rect1 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface1.w;
+      h := SrcSurface1.h;
+    end;
+  end
+  else
+    Src_Rect1 := SrcRect1^;
+
+    Src_Rect2 := SrcRect2^;
+  with Src_Rect1 do
+  begin
+    Right1 := Left1 + w;
+    Bottom1 := Top1 + h;
+  end;
+  with Src_Rect2 do
+  begin
+    Right2 := Left2 + w;
+    Bottom2 := Top2 + h;
+  end;
+  if ( Left1 >= Right2 ) or ( Right1 <= Left2 ) or ( Top1 >= Bottom2 ) or ( 
+Bottom1 <=
+    Top2 ) then
+    exit;
+  if Left1 <= Left2 then
+  begin
+    // 1. left, 2. right
+    Scan1Start := Src_Rect1.x + Left2 - Left1;
+    Scan2Start := Src_Rect2.x;
+    ScanWidth := Right1 - Left2;
+    with Src_Rect2 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end
+  else
+  begin
+    // 1. right, 2. left
+    Scan1Start := Src_Rect1.x;
+    Scan2Start := Src_Rect2.x + Left1 - Left2;
+    ScanWidth := Right2 - Left1;
+    with Src_Rect1 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end;
+  with SrcSurface1^ do
+  begin
+    Pitch1 := Pitch;
+    Addr1 := cardinal( Pixels );
+    inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+    with format^ do
+    begin
+      BPP := BytesPerPixel;
+      TransparentColor1 := colorkey;
+    end;
+  end;
+
+  Mod1 := Pitch1 - ( ScanWidth * BPP );
+
+  inc( Addr1, BPP * Scan1Start );
+
+  if Top1 <= Top2 then
+  begin
+    // 1. up, 2. down
+    ScanHeight := Bottom1 - Top2;
+    if ScanHeight > Src_Rect2.h then
+      ScanHeight := Src_Rect2.h;
+    inc( Addr1, Pitch1 * UInt32( Top2 - Top1 ) );
+  end
+  else
+  begin
+    // 1. down, 2. up
+    ScanHeight := Bottom2 - Top1;
+    if ScanHeight > Src_Rect1.h then
+      ScanHeight := Src_Rect1.h;
+
+  end;
+  case BPP of
+    1 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PByte( Addr1 )^ <> TransparentColor1 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    2 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PWord( Addr1 )^ <> TransparentColor1 )  then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 2 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    3 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          Color1 := PLongWord( Addr1 )^ and $00FFFFFF;
+
+          if ( Color1 <> TransparentColor1 )
+            then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 3 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    4 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PLongWord( Addr1 )^ <> TransparentColor1 )  then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 4 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+  end;
+end;
+
+procedure SDL_ORSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr, TransparentColor : cardinal;
+  // TransparentColor: cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        cmp al, 0
+        je @SkipColor         // if AL=0 or AL=transparent color then skip everything
+        cmp al, byte ptr TransparentColor
+        je @SkipColor
+        or al, [edi]
+        mov [edi], al
+       @SkipColor:
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    15 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax          // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        cmp ax, word ptr TransparentColor
+        je @SkipColor
+        or ax, [edi]
+        mov [edi], ax
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    16 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        cmp ax, word ptr TransparentColor
+        je @SkipColor
+        or ax, [edi]
+        mov [edi], ax
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    24 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       add WorkX, ax         // WorkX := Src.w * 2
+       add WorkX, ax         // WorkX := Src.w * 3
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        or al, [edi]
+        mov [edi], al
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    32 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       shl ax, 2
+       mov WorkX, ax         // WorkX := Src.w * 4
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        or al, [edi]
+        mov [edi], al
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+procedure SDL_ANDSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr, TransparentColor : cardinal;
+  // TransparentColor: cardinal;
+  _ebx, _esi, _edi, _esp : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        cmp al, 0
+        je @SkipColor         // if AL=0 or AL=transparent color then skip everything
+        cmp al, byte ptr TransparentColor
+        je @SkipColor
+        and al, [edi]
+        mov [edi], al
+       @SkipColor:
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    15 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax          // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        cmp ax, word ptr TransparentColor
+        je @SkipColor
+        and ax, [edi]
+        mov [edi], ax
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    16 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       @Loopx:
+        mov ax, [esi]         // AX := source color
+        cmp ax, 0
+        je @SkipColor         // if AX=0 then skip everything
+        cmp ax, word ptr TransparentColor
+        je @SkipColor
+        and ax, [edi]
+        mov [edi], ax
+       @SkipColor:
+        add esi, 2
+        add edi, 2
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    24 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       mov WorkX, ax         // WorkX := Src.w
+       add WorkX, ax         // WorkX := Src.w * 2
+       add WorkX, ax         // WorkX := Src.w * 3
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        and al, [edi]
+        mov [edi], al
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+    32 :
+      asm
+      mov _ebx, ebx
+      mov _esi, esi
+      mov _edi, edi
+      mov _esp, esp
+      mov esi, SrcAddr      // ESI - Source Offset
+      mov edi, DestAddr     // EDI - Destination Offset
+      mov ax, Src.h         //  WorkY := Src.h
+      mov WorkY, ax
+      @LoopY:
+       mov ax, Src.w
+       shl ax, 2
+       mov WorkX, ax         // WorkX := Src.w * 4
+       @Loopx:
+        mov al, [esi]         // AL := source color
+        and al, [edi]
+        mov [edi], al
+        inc esi
+        inc edi
+        dec WorkX
+       jnz @LoopX
+       add esi, SrcMod
+       add edi, DestMod
+       dec WorkY
+      jnz @LoopY
+      mov esp,_esp
+      mov edi,_edi
+      mov esi,_esi
+      mov ebx,_ebx
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+
+procedure SDL_GTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                if Pixel2 and $E0 > Pixel1 and $E0 then R := Pixel2 and $E0 else R := Pixel1 and $E0;
+                if Pixel2 and $1C > Pixel1 and $1C then G := Pixel2 and $1C else G := Pixel1 and $1C;
+                if Pixel2 and $03 > Pixel1 and $03 then B := Pixel2 and $03 else B := Pixel1 and $03;
+
+                if R > $E0 then
+                  R := $E0;
+                if G > $1C then
+                  G := $1C;
+                if B > $03 then
+                  B := $03;
+                PUInt8( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt8( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $7C00 > Pixel1 and $7C00 then R := Pixel2 and $7C00 else R := Pixel1 and $7C00;
+              if Pixel2 and $03E0 > Pixel1 and $03E0 then G := Pixel2 and $03E0 else G := Pixel1 and $03E0;
+              if Pixel2 and $001F > Pixel1 and $001F then B := Pixel2 and $001F else B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $F800 > Pixel1 and $F800 then R := Pixel2 and $F800 else R := Pixel1 and $F800;
+              if Pixel2 and $07E0 > Pixel1 and $07E0 then G := Pixel2 and $07E0 else G := Pixel1 and $07E0;
+              if Pixel2 and $001F > Pixel1 and $001F then B := Pixel2 and $001F else B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $FF0000 > Pixel1 and $FF0000 then R := Pixel2 and $FF0000 else R := Pixel1 and $FF0000;
+              if Pixel2 and $00FF00 > Pixel1 and $00FF00 then G := Pixel2 and $00FF00 else G := Pixel1 and $00FF00;
+              if Pixel2 and $0000FF > Pixel1 and $0000FF then B := Pixel2 and $0000FF else B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end
+              else
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $FF0000 > Pixel1 and $FF0000 then R := Pixel2 and $FF0000 else R := Pixel1 and $FF0000;
+              if Pixel2 and $00FF00 > Pixel1 and $00FF00 then G := Pixel2 and $00FF00 else G := Pixel1 and $00FF00;
+              if Pixel2 and $0000FF > Pixel1 and $0000FF then B := Pixel2 and $0000FF else B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+
+procedure SDL_LTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest : TSDL_Rect;
+  Diff : integer;
+  SrcAddr, DestAddr : cardinal;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                if Pixel2 and $E0 < Pixel1 and $E0 then R := Pixel2 and $E0 else R := Pixel1 and $E0;
+                if Pixel2 and $1C < Pixel1 and $1C then G := Pixel2 and $1C else G := Pixel1 and $1C;
+                if Pixel2 and $03 < Pixel1 and $03 then B := Pixel2 and $03 else B := Pixel1 and $03;
+
+                if R > $E0 then
+                  R := $E0;
+                if G > $1C then
+                  G := $1C;
+                if B > $03 then
+                  B := $03;
+                PUInt8( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt8( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $7C00 < Pixel1 and $7C00 then R := Pixel2 and $7C00 else R := Pixel1 and $7C00;
+              if Pixel2 and $03E0 < Pixel1 and $03E0 then G := Pixel2 and $03E0 else G := Pixel1 and $03E0;
+              if Pixel2 and $001F < Pixel1 and $001F then B := Pixel2 and $001F else B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $F800 < Pixel1 and $F800 then R := Pixel2 and $F800 else R := Pixel1 and $F800;
+              if Pixel2 and $07E0 < Pixel1 and $07E0 then G := Pixel2 and $07E0 else G := Pixel1 and $07E0;
+              if Pixel2 and $001F < Pixel1 and $001F then B := Pixel2 and $001F else B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $FF0000 < Pixel1 and $FF0000 then R := Pixel2 and $FF0000 else R := Pixel1 and $FF0000;
+              if Pixel2 and $00FF00 < Pixel1 and $00FF00 then G := Pixel2 and $00FF00 else G := Pixel1 and $00FF00;
+              if Pixel2 and $0000FF < Pixel1 and $0000FF then B := Pixel2 and $0000FF else B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end
+              else
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+              if Pixel2 and $FF0000 < Pixel1 and $FF0000 then R := Pixel2 and $FF0000 else R := Pixel1 and $FF0000;
+              if Pixel2 and $00FF00 < Pixel1 and $00FF00 then G := Pixel2 and $00FF00 else G := Pixel1 and $00FF00;
+              if Pixel2 and $0000FF < Pixel1 and $0000FF then B := Pixel2 and $0000FF else B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+function SDL_ClipLine(var x1,y1,x2,y2: Integer; ClipRect: PSDL_Rect) : boolean;
+var tflag, flag1, flag2: word;
+    txy, xedge, yedge: Integer;
+    slope: single;
+
+  function ClipCode(x,y: Integer): word;
+  begin
+    Result := 0;
+    if x < ClipRect.x then Result := 1;
+    if x >= ClipRect.w + ClipRect.x then Result := Result or 2;
+    if y < ClipRect.y then Result := Result or 4;
+    if y >= ClipRect.h + ClipRect.y then Result := Result or 8;
+  end;
+
+begin
+  flag1 := ClipCode(x1,y1);
+  flag2 := ClipCode(x2,y2);
+  result := true;
+
+  while true do
+  begin
+    if (flag1 or flag2) = 0 then Exit; // all in
+
+    if (flag1 and flag2) <> 0 then
+      begin
+        result := false;
+        Exit; // all out
+      end;
+
+    if flag2 = 0 then
+      begin
+        txy := x1; x1 := x2; x2 := txy;
+        txy := y1; y1 := y2; y2 := txy;
+        tflag := flag1; flag1 := flag2; flag2 := tflag;
+      end;
+
+    if (flag2 and 3) <> 0 then
+      begin
+        if (flag2 and 1) <> 0 then
+          xedge := ClipRect.x
+        else
+          xedge := ClipRect.w + ClipRect.x -1; // back 1 pixel otherwise we end up in a loop
+
+        slope := (y2 - y1) / (x2 - x1);
+        y2 := y1 + Round(slope * (xedge - x1));
+        x2 := xedge;
+      end
+    else
+      begin
+        if (flag2 and 4) <> 0 then
+          yedge := ClipRect.y
+        else
+          yedge := ClipRect.h + ClipRect.y -1; // up 1 pixel otherwise we end up in a loop
+
+        slope := (x2 - x1) / (y2 - y1);
+        x2 := x1 + Round(slope * (yedge - y1));
+        y2 := yedge;
+      end;
+
+    flag2 := ClipCode(x2, y2);
+  end;
+end;
+
+end.
+
+
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlinput.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlinput.pas
new file mode 100644
index 00000000..094f4e0f
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlinput.pas
@@ -0,0 +1,923 @@
+unit sdlinput;
+{
+  $Id: sdlinput.pas,v 1.9 2007/08/22 21:18:43 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{                     SDL Input Wrapper                                        }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominique Louis are                                      }
+{ Copyright (C) 2003 - 2100 Dominique Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   SDL Mouse, Keyboard and Joystick wrapper                                   }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{ March      12     2003 - DL : Initial creation                               }
+{                                                                              }
+{ February   02     2004 - DL : Added Custom Cursor Support to the Mouse class }
+{
+  $Log: sdlinput.pas,v $
+  Revision 1.9  2007/08/22 21:18:43  savage
+  Thanks to Dean for his MouseDelta patch.
+
+  Revision 1.8  2005/08/03 18:57:32  savage
+  Various updates and additions. Mainly to handle OpenGL 3D Window support and better cursor support for the mouse class
+
+  Revision 1.7  2004/09/30 22:32:04  savage
+  Updated with slightly different header comments
+
+  Revision 1.6  2004/09/12 21:52:58  savage
+  Slight changes to fix some issues with the sdl classes.
+
+  Revision 1.5  2004/05/10 21:11:49  savage
+  changes required to help get SoAoS off the ground.
+
+  Revision 1.4  2004/05/03 22:38:40  savage
+  Added the ability to enable or disable certain inputs @ runtime. Basically it just does not call UpdateInput if Enabled = false.
+  Can also disable and enable input devices via the InputManager.
+
+  Revision 1.3  2004/04/28 21:27:01  savage
+  Updated Joystick code and event handlers. Needs testing...
+
+  Revision 1.2  2004/02/14 22:36:29  savage
+  Fixed inconsistencies of using LoadLibrary and LoadModule.
+  Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+
+}
+{******************************************************************************}
+
+interface
+
+{$i jedi-sdl.inc}
+
+uses
+  Classes,
+  sdl;
+
+type
+  TSDLInputType = ( itJoystick , itKeyBoard, itMouse );
+  TSDLInputTypes = set of TSDLInputType;
+
+  TSDLCustomInput = class( TObject )
+  private
+    FEnabled: Boolean;
+  public
+    constructor Create;
+    function UpdateInput( event: TSDL_EVENT ) : Boolean; virtual; abstract;
+    property Enabled : Boolean read FEnabled write FEnabled;
+  end;
+
+  TSDLJoyAxisMoveEvent =  procedure ( Which: UInt8; Axis: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLJoyBallMoveEvent =  procedure ( Which: UInt8; Ball: UInt8; RelativePos: TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLJoyHatMoveEvent =  procedure ( Which: UInt8; Hat: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLJoyButtonEvent =  procedure ( Which: UInt8; Button: UInt8; State: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+
+
+  TSDLJoyStick = class( TSDLCustomInput )
+  private
+    FJoystick : PSDL_Joystick;
+    FJoystickIndex : Integer;
+    FJoyAxisMoveEvent : TSDLJoyAxisMoveEvent;
+    FJoyBallMoveEvent : TSDLJoyBallMoveEvent;
+    FJoyHatMoveEvent : TSDLJoyHatMoveEvent;
+    FJoyButtonDownEvent : TSDLJoyButtonEvent;
+    FJoyButtonUpEvent : TSDLJoyButtonEvent;
+    procedure DoAxisMove( Event : TSDL_Event );
+    procedure DoBallMove( Event : TSDL_Event );
+    procedure DoHatMove( Event : TSDL_Event );
+    procedure DoButtonDown( Event : TSDL_Event );
+    procedure DoButtonUp( Event : TSDL_Event );
+    function GetName: PChar;
+    function GetNumAxes: integer;
+    function GetNumBalls: integer;
+    function GetNumButtons: integer;
+    function GetNumHats: integer;
+  public
+    constructor Create( Index : Integer );
+    destructor Destroy; override;
+    procedure Open;
+    procedure Close;
+    function UpdateInput( Event: TSDL_EVENT ) : Boolean; override;
+    property Name : PChar read GetName;
+    property NumAxes : integer read GetNumAxes;
+    property NumBalls : integer read GetNumBalls;
+    property NumButtons : integer read GetNumButtons;
+    property NumHats : integer read GetNumHats;
+    property OnAxisMove : TSDLJoyAxisMoveEvent read FJoyAxisMoveEvent write FJoyAxisMoveEvent;
+    property OnBallMove : TSDLJoyBallMoveEvent read FJoyBallMoveEvent write FJoyBallMoveEvent;
+    property OnHatMove : TSDLJoyHatMoveEvent read FJoyHatMoveEvent write FJoyHatMoveEvent;
+    property OnButtonDown : TSDLJoyButtonEvent read FJoyButtonDownEvent write FJoyButtonDownEvent;
+    property OnButtonUp : TSDLJoyButtonEvent read FJoyButtonUpEvent write FJoyButtonUpEvent;
+  end;
+
+  TSDLJoySticks = class( TObject )
+  private
+    FNumOfJoySticks: Integer;
+    FJoyStickList : TList;
+    function GetJoyStick(Index: integer): TSDLJoyStick;
+    procedure SetJoyStick(Index: integer; const Value: TSDLJoyStick);
+  public
+    constructor Create;
+    destructor Destroy; override;
+    function UpdateInput( event: TSDL_EVENT ) : Boolean;
+    property NumOfJoySticks : Integer read FNumOfJoySticks write FNumOfJoySticks;
+    property JoySticks[ Index : integer ] : TSDLJoyStick read GetJoyStick write SetJoyStick;
+  end;
+
+  TSDLKeyBoardEvent =  procedure ( var Key: TSDLKey; Shift: TSDLMod; unicode : UInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+
+  TSDLKeyBoard = class( TSDLCustomInput )
+  private
+    FKeys : PKeyStateArr;
+    FOnKeyUp: TSDLKeyBoardEvent;
+    FOnKeyDown: TSDLKeyBoardEvent;
+    procedure DoKeyDown( keysym : PSDL_keysym );
+    procedure DoKeyUp( keysym : PSDL_keysym );
+  public
+    function IsKeyDown( Key : TSDLKey ) : Boolean;
+    function IsKeyUp( Key : TSDLKey ) : Boolean;
+    function UpdateInput( event: TSDL_EVENT ) : Boolean; override;
+    property Keys : PKeyStateArr read FKeys write FKeys;
+    property OnKeyDown : TSDLKeyBoardEvent read FOnKeyDown write FOnKeyDown;
+    property OnKeyUp : TSDLKeyBoardEvent read FOnKeyUp write FOnKeyUp;
+  end;
+
+  TSDLMouseButtonEvent =  procedure ( Button : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLMouseMoveEvent =  procedure ( Shift: TSDLMod; CurrentPos : TPoint; RelativePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLMouseWheelEvent =  procedure ( WheelDelta : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
+
+  TSDLCustomCursor = class( TObject )
+  private
+    FFileName : string;
+    FHotPoint: TPoint;
+    procedure SetFileName(const aValue: string );
+    function ScanForChar( str : string; ch : Char; startPos : Integer; lookFor : Boolean ) : Integer;
+  public
+    constructor Create( const aFileName : string; aHotPoint: TPoint );
+    procedure LoadFromFile( const aFileName : string ); virtual; abstract;
+    procedure LoadFromStream( aStream : TStream ); virtual; abstract;
+    procedure Show; virtual; abstract;
+    property FileName : string read FFileName write SetFileName;
+    property HotPoint : TPoint read FHotPoint write FHotPoint;
+  end;
+
+  TSDLXPMCursor = class( TSDLCustomCursor )
+  private
+    FCursor : PSDL_Cursor;
+    procedure FreeCursor;
+  public
+    destructor Destroy; override;
+    procedure LoadFromFile( const aFileName : string ); override;
+    procedure LoadFromStream( aStream : TStream ); override;
+    procedure Show; override;
+  end;
+
+  TSDLCursorList = class( TStringList )
+  protected
+    function GetObject( aIndex : Integer ): TSDLCustomCursor; reintroduce;
+    procedure PutObject( aIndex : Integer; AObject : TSDLCustomCursor); reintroduce;
+  public
+    constructor Create;
+   function AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer; virtual;
+  end;
+
+  TSDLMouse = class( TSDLCustomInput )
+  private
+    FDragging : Boolean;
+    FMousePos : TPoint;
+    FOnMouseUp: TSDLMouseButtonEvent;
+    FOnMouseDown: TSDLMouseButtonEvent;
+    FOnMouseMove: TSDLMouseMoveEvent;
+    FOnMouseWheel: TSDLMouseWheelEvent;
+    FCursorList : TSDLCursorList; // Cursor Pointer
+    procedure DoMouseMove( Event: TSDL_Event );
+    procedure DoMouseDown( Event: TSDL_Event );
+    procedure DoMouseUp( Event: TSDL_Event );
+    procedure DoMouseWheelScroll( Event: TSDL_Event );
+    function GetMousePosition: TPoint;
+    procedure SetMousePosition(const Value: TPoint);
+    function GetMouseDelta: TPoint;
+  public
+    destructor Destroy; override;
+    function UpdateInput( event: TSDL_EVENT ) : Boolean; override;
+    function MouseIsDown( Button : Integer ) : Boolean;
+    function MouseIsUp( Button : Integer ) : Boolean;
+    procedure ShowCursor;
+    procedure HideCursor;
+    property OnMouseDown : TSDLMouseButtonEvent read FOnMouseDown write FOnMouseDown;
+    property OnMouseUp : TSDLMouseButtonEvent read FOnMouseUp write FOnMouseUp;
+    property OnMouseMove : TSDLMouseMoveEvent read FOnMouseMove write FOnMouseMove;
+    property OnMouseWheel : TSDLMouseWheelEvent read FOnMouseWheel write FOnMouseWheel;
+    property MousePosition : TPoint read GetMousePosition write SetMousePosition;
+    property MouseDelta: TPoint read GetMouseDelta;
+    property Cursors : TSDLCursorList read FCursorList write FCursorList;
+  end;
+
+  TSDLInputManager = class( TObject )
+  private
+    FKeyBoard : TSDLKeyBoard;
+    FMouse : TSDLMouse;
+    FJoystick : TSDLJoysticks;
+  public
+    constructor Create( InitInputs : TSDLInputTypes );
+    destructor Destroy; override;
+    procedure Disable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 );
+    procedure Enable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 );
+    function UpdateInputs( event: TSDL_EVENT ) : Boolean;
+    property KeyBoard : TSDLKeyBoard read FKeyBoard write FKeyBoard;
+    property Mouse : TSDLMouse read FMouse write FMouse;
+    property JoyStick : TSDLJoysticks read FJoyStick write FJoyStick;
+  end;
+
+implementation
+
+uses
+  SysUtils;
+
+{ TSDLCustomInput }
+constructor TSDLCustomInput.Create;
+begin
+  inherited;
+  FEnabled := true;
+end;
+
+{ TSDLJoysticks }
+constructor TSDLJoysticks.Create;
+var
+  i : integer;
+begin
+  inherited;
+  if ( SDL_WasInit( SDL_INIT_JOYSTICK ) = 0 ) then
+    SDL_InitSubSystem( SDL_INIT_JOYSTICK );
+  FNumOfJoySticks := SDL_NumJoysticks;
+  FJoyStickList := TList.Create;
+  for i := 0 to FNumOfJoySticks - 1 do
+  begin
+    FJoyStickList.Add( TSDLJoyStick.Create( i )  );
+  end;
+end;
+
+destructor TSDLJoysticks.Destroy;
+var
+  i : integer;
+begin
+  if FJoyStickList.Count > 0 then
+  begin
+    for i := 0 to FJoyStickList.Count - 1 do
+    begin
+      TSDLJoyStick( FJoyStickList.Items[i] ).Free;
+    end;
+  end;
+  SDL_QuitSubSystem( SDL_INIT_JOYSTICK );
+  inherited;
+end;
+
+function TSDLJoySticks.GetJoyStick(Index: integer): TSDLJoyStick;
+begin
+  Result := TSDLJoyStick( FJoyStickList[ Index ] );
+end;
+
+procedure TSDLJoySticks.SetJoyStick(Index: integer;
+  const Value: TSDLJoyStick);
+begin
+  FJoyStickList[ Index ] :=  @Value;
+end;
+
+function TSDLJoysticks.UpdateInput(event: TSDL_EVENT): Boolean;
+var
+  i : integer;
+begin
+  result := false;
+  if FJoyStickList.Count > 0 then
+  begin
+    for i := 0 to FJoyStickList.Count - 1 do
+    begin
+      TSDLJoyStick( FJoyStickList.Items[i] ).UpdateInput( event );
+    end;
+  end;
+end;
+
+{ TSDLKeyBoard }
+procedure TSDLKeyBoard.DoKeyDown(keysym: PSDL_keysym);
+begin
+  if Assigned( FOnKeyDown ) then
+    FOnKeyDown( keysym.sym , keysym.modifier, keysym.unicode );
+end;
+
+procedure TSDLKeyBoard.DoKeyUp(keysym: PSDL_keysym);
+begin
+  if Assigned( FOnKeyUp ) then
+    FOnKeyUp( keysym.sym , keysym.modifier, keysym.unicode );
+end;
+
+function TSDLKeyBoard.IsKeyDown( Key: TSDLKey ): Boolean;
+begin
+  SDL_PumpEvents;
+
+  // Populate Keys array
+  FKeys := PKeyStateArr( SDL_GetKeyState( nil ) );
+  Result := ( FKeys[Key] = SDL_PRESSED );
+end;
+
+function TSDLKeyBoard.IsKeyUp( Key: TSDLKey ): Boolean;
+begin
+  SDL_PumpEvents;
+
+  // Populate Keys array
+  FKeys := PKeyStateArr( SDL_GetKeyState( nil ) );
+  Result := ( FKeys[Key] = SDL_RELEASED );
+end;
+
+function TSDLKeyBoard.UpdateInput(event: TSDL_EVENT): Boolean;
+begin
+  result := false;
+  if ( FEnabled ) then
+  begin
+    case event.type_ of
+      SDL_KEYDOWN :
+      begin
+        // handle key presses
+        DoKeyDown( @event.key.keysym );
+        result := true;
+      end;
+
+      SDL_KEYUP :
+      begin
+        // handle key releases
+        DoKeyUp( @event.key.keysym );
+        result := true;
+      end;
+    end;
+  end;
+end;
+
+{ TSDLMouse }
+destructor TSDLMouse.Destroy;
+begin
+
+  inherited;
+end;
+
+procedure TSDLMouse.DoMouseDown( Event: TSDL_Event );
+var
+  CurrentPos : TPoint;
+begin
+  FDragging := true;
+  if Assigned( FOnMouseDown ) then
+  begin
+    CurrentPos.x := event.button.x;
+    CurrentPos.y := event.button.y;
+    FOnMouseDown( event.button.button, SDL_GetModState, CurrentPos );
+  end;
+end;
+
+procedure TSDLMouse.DoMouseMove( Event: TSDL_Event );
+var
+  CurrentPos, RelativePos : TPoint;
+begin
+  if Assigned( FOnMouseMove ) then
+  begin
+    CurrentPos.x := event.motion.x;
+    CurrentPos.y := event.motion.y;
+    RelativePos.x := event.motion.xrel;
+    RelativePos.y := event.motion.yrel;
+    FOnMouseMove( SDL_GetModState, CurrentPos, RelativePos );
+  end;
+end;
+
+procedure TSDLMouse.DoMouseUp( event: TSDL_EVENT );
+var
+  Point : TPoint;
+begin
+  FDragging := false;
+  if Assigned( FOnMouseUp ) then
+  begin
+    Point.x := event.button.x;
+    Point.y := event.button.y;
+    FOnMouseUp( event.button.button, SDL_GetModState, Point );
+  end;
+end;
+
+procedure TSDLMouse.DoMouseWheelScroll( event: TSDL_EVENT );
+var
+  Point : TPoint;
+begin
+  if Assigned( FOnMouseWheel ) then
+  begin
+    Point.x := event.button.x;
+    Point.y := event.button.y;
+    if ( event.button.button = SDL_BUTTON_WHEELUP ) then
+      FOnMouseWheel( SDL_BUTTON_WHEELUP, SDL_GetModState, Point )
+    else
+      FOnMouseWheel( SDL_BUTTON_WHEELDOWN, SDL_GetModState, Point );
+  end;
+end;
+
+function TSDLMouse.GetMouseDelta: TPoint;
+begin
+  SDL_PumpEvents;
+  
+  SDL_GetRelativeMouseState( Result.X, Result.Y );
+end;
+
+function TSDLMouse.GetMousePosition: TPoint;
+begin
+  SDL_PumpEvents;
+
+  SDL_GetMouseState( FMousePos.X, FMousePos.Y );
+  Result := FMousePos;
+end;
+
+procedure TSDLMouse.HideCursor;
+begin
+  SDL_ShowCursor( SDL_DISABLE  );
+end;
+
+function TSDLMouse.MouseIsDown(Button: Integer): Boolean;
+begin
+  SDL_PumpEvents;
+
+  Result := ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 );
+end;
+
+function TSDLMouse.MouseIsUp(Button: Integer): Boolean;
+begin
+  SDL_PumpEvents;
+
+  Result := not ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 );
+end;
+
+procedure TSDLMouse.SetMousePosition(const Value: TPoint);
+begin
+  SDL_WarpMouse( Value.x, Value.y );
+end;
+
+procedure TSDLMouse.ShowCursor;
+begin
+  SDL_ShowCursor( SDL_ENABLE  );
+end;
+
+function TSDLMouse.UpdateInput(event: TSDL_EVENT): Boolean;
+begin
+  result := false;
+  if ( FEnabled ) then
+  begin
+    case event.type_ of
+      SDL_MOUSEMOTION :
+      begin
+        // handle Mouse Move
+        DoMouseMove( event );
+      end;
+
+      SDL_MOUSEBUTTONDOWN :
+      begin
+        // handle Mouse Down
+        if ( event.button.button = SDL_BUTTON_WHEELUP )
+        or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then
+          DoMouseWheelScroll( event )
+        else
+          DoMouseDown( event );
+      end;
+
+      SDL_MOUSEBUTTONUP :
+      begin
+        // handle Mouse Up
+        if ( event.button.button = SDL_BUTTON_WHEELUP )
+        or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then
+          DoMouseWheelScroll( event )
+        else
+          DoMouseUp( event );
+      end;
+    end;
+  end;
+end;
+
+{ TSDLInputManager }
+constructor TSDLInputManager.Create(InitInputs: TSDLInputTypes);
+begin
+  inherited Create;
+  if itJoystick in InitInputs then
+    FJoystick := TSDLJoysticks.Create;
+
+  if itKeyBoard in InitInputs then
+    FKeyBoard := TSDLKeyBoard.Create;
+    
+  if itMouse in InitInputs then
+    FMouse := TSDLMouse.Create;
+end;
+
+destructor TSDLInputManager.Destroy;
+begin
+  if FJoystick <> nil then
+    FreeAndNil( FJoystick );
+  if FKeyBoard <> nil then
+    FreeAndNil( FKeyBoard );
+  if FMouse <> nil then
+    FreeAndNil( FMouse );
+  inherited;
+end;
+
+procedure TSDLInputManager.Disable( InitInputs : TSDLInputTypes;  JoyStickNumber : Integer );
+begin
+  if itJoystick in InitInputs then
+    FJoystick.JoySticks[ JoyStickNumber ].Enabled := false;
+
+  if itKeyBoard in InitInputs then
+    FKeyBoard.Enabled := false;
+
+  if itMouse in InitInputs then
+    FMouse.Enabled := false;
+end;
+
+procedure TSDLInputManager.Enable( InitInputs: TSDLInputTypes; JoyStickNumber: Integer );
+begin
+  if itJoystick in InitInputs then
+    FJoystick.JoySticks[ JoyStickNumber ].Enabled := true;
+
+  if itKeyBoard in InitInputs then
+    FKeyBoard.Enabled := true;
+    
+  if itMouse in InitInputs then
+    FMouse.Enabled := true;
+end;
+
+function TSDLInputManager.UpdateInputs( event: TSDL_EVENT ): Boolean;
+begin
+  Result := false;
+  if ( FJoystick <> nil ) then
+   Result := FJoystick.UpdateInput( event );
+  if ( FKeyBoard <> nil ) then
+   Result := FKeyBoard.UpdateInput( event );
+  if ( FMouse <> nil ) then
+   Result := FMouse.UpdateInput( event );
+end;
+
+{ TSDLJoyStick }
+procedure TSDLJoyStick.Close;
+begin
+  SDL_JoystickClose( @FJoystick );
+end;
+
+constructor TSDLJoyStick.Create( Index : Integer );
+begin
+  inherited Create;
+  FJoystick := nil;
+  FJoystickIndex := Index;
+end;
+
+destructor TSDLJoyStick.Destroy;
+begin
+  if FJoystick <> nil then
+    Close;
+  inherited;
+end;
+
+procedure TSDLJoyStick.DoAxisMove(Event: TSDL_Event);
+begin
+  if Assigned( FJoyAxisMoveEvent ) then
+  begin
+    FJoyAxisMoveEvent( Event.jaxis.which, Event.jaxis.axis, Event.jaxis.value );
+  end
+end;
+
+procedure TSDLJoyStick.DoBallMove(Event: TSDL_Event);
+var
+  BallPoint : TPoint;
+begin
+  if Assigned( FJoyBallMoveEvent ) then
+  begin
+    BallPoint.x := Event.jball.xrel;
+    BallPoint.y := Event.jball.yrel;
+    FJoyBallMoveEvent( Event.jball.which, Event.jball.ball, BallPoint );
+  end;
+end;
+
+procedure TSDLJoyStick.DoButtonDown(Event: TSDL_Event);
+begin
+  if Assigned( FJoyButtonDownEvent ) then
+  begin
+    if ( Event.jbutton.state = SDL_PRESSED ) then
+      FJoyButtonDownEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state );
+  end;
+end;
+
+procedure TSDLJoyStick.DoButtonUp(Event: TSDL_Event);
+begin
+  if Assigned( FJoyButtonUpEvent ) then
+  begin
+    if ( Event.jbutton.state = SDL_RELEASED ) then
+      FJoyButtonUpEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state );
+  end
+end;
+
+procedure TSDLJoyStick.DoHatMove(Event: TSDL_Event);
+begin
+  if Assigned( FJoyHatMoveEvent ) then
+  begin
+    FJoyHatMoveEvent( Event.jhat.which, Event.jhat.hat, Event.jhat.value );
+  end;
+end;
+
+function TSDLJoyStick.GetName: PChar;
+begin
+  result := FJoystick.name;
+end;
+
+function TSDLJoyStick.GetNumAxes: integer;
+begin
+  result := FJoystick.naxes;
+end;
+
+function TSDLJoyStick.GetNumBalls: integer;
+begin
+  result := FJoystick.nballs;
+end;
+
+function TSDLJoyStick.GetNumButtons: integer;
+begin
+  result := FJoystick.nbuttons;
+end;
+
+function TSDLJoyStick.GetNumHats: integer;
+begin
+  result := FJoystick.nhats;
+end;
+
+procedure TSDLJoyStick.Open;
+begin
+  FJoystick := SDL_JoyStickOpen( FJoystickIndex );
+end;
+
+function TSDLJoyStick.UpdateInput(Event: TSDL_EVENT): Boolean;
+begin
+  Result := false;
+  
+  if ( FEnabled ) then
+  begin
+    case event.type_ of
+      SDL_JOYAXISMOTION :
+      begin
+        DoAxisMove( Event );
+      end;
+
+      SDL_JOYBALLMOTION :
+      begin
+        DoBallMove( Event );
+      end;
+
+      SDL_JOYHATMOTION :
+      begin
+        DoHatMove( Event );
+      end;
+
+      SDL_JOYBUTTONDOWN :
+      begin
+        DoButtonDown( Event );
+      end;
+
+      SDL_JOYBUTTONUP :
+      begin
+        DoButtonUp( Event );
+      end;
+    end;
+  end;
+end;
+
+{ TSDLCustomCursor }
+
+constructor TSDLCustomCursor.Create(const aFileName: string;  aHotPoint: TPoint);
+begin
+  inherited Create;
+  FHotPoint := aHotPoint;
+  LoadFromFile( aFileName );
+end;
+
+function TSDLCustomCursor.ScanForChar(str: string; ch: Char;
+  startPos: Integer; lookFor: Boolean): Integer;
+begin
+  Result := -1;
+  while ( ( ( str[ startPos ] = ch ) <> lookFor ) and ( startPos < Length( str ) ) ) do
+    inc( startPos );
+  if startPos <> Length( str ) then
+    Result := startPos;
+end;
+
+procedure TSDLCustomCursor.SetFileName(const aValue: string);
+begin
+  LoadFromFile( aValue );
+end;
+
+{ TSDLXPMCursor }
+
+destructor TSDLXPMCursor.Destroy;
+begin
+  FreeCursor;
+  inherited;
+end;
+
+procedure TSDLXPMCursor.FreeCursor;
+begin
+  if FCursor <> nil then
+  begin
+    SDL_FreeCursor( FCursor );
+    FFileName := ''; 
+  end;
+end;
+
+procedure TSDLXPMCursor.LoadFromFile(const aFileName: string);
+var
+  xpmFile : Textfile;
+  step : Integer;
+  holdPos : Integer;
+  counter : Integer;
+  dimensions : array[ 1..3 ] of Integer;
+  clr, clrNone, clrBlack, clrWhite : Char;
+  data, mask : array of UInt8;
+  i, col : Integer;
+  LineString : string;
+begin
+  FreeCursor;
+  AssignFile( xpmFile, aFileName );
+  Reset( xpmFile );
+  step := 0;
+  i := -1;
+  clrBlack := 'X';
+  clrWhite := ',';
+  clrNone := ' ';
+  counter := 0;
+  while not ( eof( xpmFile ) ) do
+  begin
+    Readln( xpmFile, LineString );
+    // scan for strings
+    if LineString[ 1 ] = '"' then
+    begin
+      case step of
+        0 : // Get dimensions  (should be width height number-of-colors ???)
+          begin
+            HoldPos := 2;
+            counter := ScanForChar( LineString, ' ', HoldPos, False );
+            counter := ScanForChar( LineString, ' ', counter, True );
+            dimensions[ 1 ] := StrToInt( Copy( LineString, HoldPos, counter - HoldPos ) );
+            counter := ScanForChar( LineString, ' ', counter, False );
+            holdPos := counter;
+            counter := ScanForChar( LineString, ' ', counter, True );
+            dimensions[ 2 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) );
+            counter := ScanForChar( LineString, ' ', counter, False );
+            holdPos := counter;
+            counter := ScanForChar( LineString, ' ', counter, True );
+            dimensions[ 3 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) );
+            step := 1;
+            SetLength( data, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 );
+            SetLength( mask, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 );
+            //Log.LogStatus( 'Length = ' + IntToStr( ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 ), 'LoadCursorFromFile' );
+          end;
+        1 : // get the symbols for transparent, black and white
+          begin
+            // get the symbol for the color
+            clr := LineString[ 2 ];
+            // look for the 'c' symbol
+            counter := ScanForChar( LineString, 'c', 3, True );
+            inc( counter );
+            counter := ScanForChar( LineString, ' ', counter, False );
+            if LowerCase( Copy( LineString, counter, 4 ) ) = 'none' then
+            begin
+              clrNone := clr;
+            end;
+            if LowerCase( Copy( LineString, counter, 7 ) ) = '#ffffff' then
+            begin
+              clrWhite := clr;
+            end;
+            if LowerCase( Copy( LineString, counter, 7 ) ) = '#000000' then
+            begin
+              clrBlack := clr;
+            end;
+            dec( dimensions[ 3 ] );
+            if dimensions[ 3 ] = 0 then
+            begin
+              step := 2;
+              counter := 0;
+            end;
+          end;
+        2 : // get cursor information -- modified from the SDL
+          // documentation of SDL_CreateCursor.
+          begin
+            for col := 1 to dimensions[1] do
+            begin
+              if ( ( col mod 8 ) <> 1 ) then
+              begin
+                data[ i ] := data[ i ] shl 1;
+                mask[ i ] := mask[ i ] shl 1;
+              end
+              else
+              begin
+                inc( i );
+                data[ i ] := 0;
+                mask[ i ] := 0;
+              end;
+              if LineString[ col ] = clrWhite then
+              begin
+                mask[ i ] := mask[ i ] or $01;
+              end
+              else if LineString[ col ] = clrBlack then
+              begin
+                data[ i ] := data[ i ] or $01;
+                mask[ i ] := mask[ i ] or $01;
+              end
+              else if LineString[ col + 1 ] = clrNone then
+              begin
+                //
+              end;
+            end;
+            inc(counter);
+            if counter = dimensions[2] then
+              step := 4;
+          end;
+      end;
+    end;
+  end;
+  CloseFile( xpmFile );
+  FCursor := SDL_CreateCursor( PUInt8( data ), PUInt8( mask ), dimensions[ 1 ], dimensions[ 2 ], FHotPoint.x, FHotPoint.y );
+end;
+
+procedure TSDLXPMCursor.LoadFromStream(aStream: TStream);
+begin
+  inherited;
+
+end;
+
+procedure TSDLXPMCursor.Show;
+begin
+  inherited;
+  SDL_SetCursor( FCursor );
+end;
+
+{ TSDLCursorList }
+function TSDLCursorList.AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer;
+begin
+  result := inherited AddObject( aName, aObject );
+end;
+
+constructor TSDLCursorList.Create;
+begin
+  inherited;
+  Duplicates := dupIgnore;
+end;
+
+function TSDLCursorList.GetObject(aIndex: Integer): TSDLCustomCursor;
+begin
+  result := TSDLCustomCursor( inherited GetObject( aIndex ) );
+end;
+
+procedure TSDLCursorList.PutObject(aIndex: Integer; aObject: TSDLCustomCursor);
+begin
+  inherited PutObject( aIndex, aObject );
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas
new file mode 100644
index 00000000..8ba3946f
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas
@@ -0,0 +1,216 @@
+unit sdlstreams;
+{
+  $Id: sdlstreams.pas,v 1.1 2004/02/05 00:08:20 savage Exp $
+  
+}
+{******************************************************************}
+{                                                                  }
+{       SDL - Simple DirectMedia Layer                             }
+{    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga      }
+{                                                                  }
+{ Portions created by Chris Bruner are                             }
+{ Copyright (C) 2002 Chris Bruner.                                 }
+{                                                                  }
+{ Contributor(s)                                                   }
+{ --------------                                                   }
+{                                                                  }
+{                                                                  }
+{ Obtained through:                                                }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )            }
+{                                                                  }
+{ You may retrieve the latest version of this file at the Project  }
+{ JEDI home page, located at http://delphi-jedi.org                }
+{                                                                  }
+{ The contents of this file are used with permission, subject to   }
+{ the Mozilla Public License Version 1.1 (the "License"); you may  }
+{ not use this file except in compliance with the License. You may }
+{ obtain a copy of the License at                                  }
+{ http://www.mozilla.org/NPL/NPL-1_1Final.html                     }
+{                                                                  }
+{ Software distributed under the License is distributed on an      }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or   }
+{ implied. See the License for the specific language governing     }
+{ rights and limitations under the License.                        }
+{                                                                  }
+{ Description                                                      }
+{ -----------                                                      }
+{  Shows how to use OpenGL to do 2D and 3D with the SDL libraries  }
+{                                                                  }
+{                                                                  }
+{ Requires                                                         }
+{ --------                                                         }
+{   SDL runtime libary somewhere in your path                      }
+{   The Latest SDL runtime can be found on http://www.libsdl.org   }
+{                                                                  }
+{ Programming Notes                                                }
+{ -----------------                                                }
+{                                                                  }
+{                                                                  }
+{                                                                  }
+{                                                                  }
+{                                                                  }
+{ Revision History                                                 }
+{ ----------------                                                 }
+{   January  11 2002 - CB : Software embraced and extended by      }
+{                           Chris Bruner of Crystal Software       }
+{                           (Canada) Inc.                          }
+{                                                                  }
+{  February  11 2002 - DL : Added FreePascal support as suggested  }
+{                        by "QuePasha Pepe" <mrkroket@hotmail.com> }
+{                                                                  }
+{******************************************************************}
+{
+  $Log: sdlstreams.pas,v $
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+  
+}
+
+{$i jedi-sdl.inc}
+
+interface
+
+uses
+  Classes,
+  SysUtils,
+  sdl,
+  sdlutils;
+
+{$IFDEF FPC}
+type
+  EinvalidContainer=class(Exception); 
+ {$ENDIF}
+  
+function LoadSDLBMPFromStream( Stream : TStream ) : PSDL_Surface;
+procedure SaveSDLBMPToStream( SDL_Surface : PSDL_Surface; stream : TStream );
+function SDL_Swap16( D : UInt16 ) : Uint16;
+function SDL_Swap32( D : UInt32 ) : Uint32;
+function SDLStreamSetup( stream : TStream ) : PSDL_RWops;
+// this only closes the SDL_RWops part of the stream, not the stream itself
+procedure SDLStreamCloseRWops( SDL_RWops : PSDL_RWops );
+
+implementation
+
+function SDL_Swap16( D : UInt16 ) : Uint16;
+begin
+  Result := ( D shl 8 ) or ( D shr 8 );
+end;
+
+function SDL_Swap32( D : UInt32 ) : Uint32;
+begin
+  Result := ( ( D shl 24 ) or ( ( D shl 8 ) and $00FF0000 ) or ( ( D shr 8 ) and $0000FF00 ) or ( D shr 24 ) );
+end;
+
+(*function SDL_Swap64(D : UInt64) : Uint64;
+var hi,lo : Uint32;
+begin
+        // Separate into high and low 32-bit resultues and swap them
+        lo := Uint32(D and $0FFFFFFFF); // bloody pascal is too tight in it's type checking!
+        D := D shr 32;
+        hi = Uint32((D and $FFFFFFFF));
+        result = SDL_Swap32(lo);
+        result := result shl 32;
+        result := result or SDL_Swap32(hi);
+end;
+*)
+
+function SdlStreamSeek( context : PSDL_RWops; offset : Integer; whence : Integer ) : integer; cdecl;
+var
+  stream : TStream;
+  origin : Word;
+begin
+  stream := TStream( context.unknown );
+  if ( stream = nil ) then
+    raise EInvalidContainer.Create( 'SDLStreamSeek on nil' );
+  case whence of
+    0 : origin := soFromBeginning; //	Offset is from the beginning of the resource. Seek moves to the position Offset. Offset must be >= 0.
+    1 : origin := soFromCurrent; //	Offset is from the current position in the resource. Seek moves to Position + Offset.
+    2 : origin := soFromEnd;
+  else
+    origin := soFromBeginning; // just in case
+  end;
+  Result := stream.Seek( offset, origin );
+end;
+
+function SDLStreamWrite( context : PSDL_RWops; Ptr : Pointer;
+  size : Integer; num : Integer ) : Integer; cdecl;
+var
+  stream : TStream;
+begin
+  stream := TStream( context.unknown );
+  if ( stream = nil ) then
+    raise EInvalidContainer.Create( 'SDLStreamWrite on nil' );
+  try
+    Result := stream.Write( Ptr^, Size * num ) div size;
+  except
+    Result := -1;
+  end;
+end;
+
+function SdlStreamRead( context : PSDL_RWops; Ptr : Pointer; size : Integer; maxnum
+  : Integer ) : Integer; cdecl;
+var
+  stream : TStream;
+begin
+  stream := TStream( context.unknown );
+  if ( stream = nil ) then
+    raise EInvalidContainer.Create( 'SDLStreamRead on nil' );
+  try
+    Result := stream.read( Ptr^, Size * maxnum ) div size;
+  except
+    Result := -1;
+  end;
+end;
+
+function SDLStreamClose( context : PSDL_RWops ) : Integer; cdecl;
+var
+  stream : TStream;
+begin
+  stream := TStream( context.unknown );
+  if ( stream = nil ) then
+    raise EInvalidContainer.Create( 'SDLStreamClose on nil' );
+  stream.Free;
+  Result := 1;
+end;
+
+function SDLStreamSetup( stream : TStream ) : PSDL_RWops;
+begin
+  result := SDL_AllocRW;
+  if ( result = nil ) then
+    raise EInvalidContainer.Create( 'could not create SDLStream on nil' );
+  result.unknown := TUnknown( stream );
+  result.seek := SDLStreamSeek;
+  result.read := SDLStreamRead;
+  result.write := SDLStreamWrite;
+  result.close := SDLStreamClose;
+  Result.type_ := 2; // TUnknown
+end;
+
+// this only closes the SDL part of the stream, not the context
+
+procedure SDLStreamCloseRWops( SDL_RWops : PSDL_RWops );
+begin
+  SDL_FreeRW( SDL_RWops );
+end;
+
+function LoadSDLBMPFromStream( stream : TStream ) : PSDL_Surface;
+var
+  SDL_RWops : PSDL_RWops;
+begin
+  SDL_RWops := SDLStreamSetup( stream );
+  result := SDL_LoadBMP_RW( SDL_RWops, 0 );
+  SDLStreamCloseRWops( SDL_RWops );
+end;
+
+procedure SaveSDLBMPToStream( SDL_Surface : PSDL_Surface; stream : TStream );
+var
+  SDL_RWops : PSDL_RWops;
+begin
+  SDL_RWops := SDLStreamSetup( stream );
+  SDL_SaveBMP_RW( SDL_Surface, SDL_RWops, 0 );
+  SDLStreamCloseRWops( SDL_RWops );
+end;
+
+end.
+
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlticks.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlticks.pas
new file mode 100644
index 00000000..a479b493
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlticks.pas
@@ -0,0 +1,197 @@
+unit sdlticks;
+{
+  $Id: sdlticks.pas,v 1.2 2006/11/08 08:22:48 savage Exp $
+
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{                   SDL GetTicks Class Wrapper                                 }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominique Louis are                                      }
+{ Copyright (C) 2004 - 2100 Dominique Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   SDL Window Wrapper                                                         }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{                                                                              }
+{   September   23 2004 - DL : Initial Creation                                }
+{
+  $Log: sdlticks.pas,v $
+  Revision 1.2  2006/11/08 08:22:48  savage
+  updates tp sdlgameinterface and sdlticks functions.
+
+  Revision 1.1  2004/09/30 22:35:47  savage
+  Changes, enhancements and additions as required to get SoAoS working.
+
+}
+{******************************************************************************}
+
+interface
+
+uses
+  sdl;
+
+type
+  TSDLTicks = class
+  private
+    FStartTime : UInt32;
+    FTicksPerSecond : UInt32;
+    FElapsedLastTime : UInt32;
+    FFPSLastTime : UInt32;
+    FLockFPSLastTime : UInt32;
+  public
+    constructor Create;
+    destructor Destroy; override; // destructor
+
+    {*****************************************************************************
+     Init
+     If the hi-res timer is present, the tick rate is stored and the function
+     returns true. Otherwise, the function returns false, and the timer should
+     not be used.
+    *****************************************************************************}
+    function Init : boolean;
+
+    {***************************************************************************
+     GetGetElapsedSeconds
+     Returns the Elapsed time, since the function was last called.
+    ***************************************************************************}
+    function GetElapsedSeconds : Single;
+
+    {***************************************************************************
+     GetFPS
+     Returns the average frames per second.
+     If this is not called every frame, the client should track the number
+     of frames itself, and reset the value after this is called.
+    ***************************************************************************}
+    function GetFPS : single;
+
+    {***************************************************************************
+     LockFPS
+     Used to lock the frame rate to a set amount. This will block until enough
+     time has passed to ensure that the fps won't go over the requested amount.
+     Note that this can only keep the fps from going above the specified level;
+     it can still drop below it. It is assumed that if used, this function will
+     be called every frame. The value returned is the instantaneous fps, which
+     will be less than or equal to the targetFPS.
+    ***************************************************************************}
+    procedure LockFPS( targetFPS : Byte );
+  end;
+
+implementation
+
+{ TSDLTicks }
+constructor TSDLTicks.Create;
+begin
+  inherited;
+  FTicksPerSecond := 1000;
+end;
+
+destructor TSDLTicks.Destroy;
+begin
+  inherited;
+end;
+
+function TSDLTicks.GetElapsedSeconds : Single;
+var
+  currentTime       : Cardinal;
+begin
+  currentTime := SDL_GetTicks;
+
+  result := ( currentTime - FElapsedLastTime ) / FTicksPerSecond;
+
+  // reset the timer
+  FElapsedLastTime := currentTime;
+end;
+
+function TSDLTicks.GetFPS : Single;
+var
+  currentTime, FrameTime : UInt32;
+  fps               : single;
+begin
+  currentTime := SDL_GetTicks;
+
+  FrameTime := ( currentTime - FFPSLastTime );
+
+  if FrameTime = 0 then
+    FrameTime := 1;
+
+  fps := FTicksPerSecond / FrameTime;
+
+  // reset the timer
+  FFPSLastTime := currentTime;
+  result := fps;
+end;
+
+function TSDLTicks.Init : boolean;
+begin
+  FStartTime := SDL_GetTicks;
+  FElapsedLastTime := FStartTime;
+  FFPSLastTime := FStartTime;
+  FLockFPSLastTime := FStartTime;
+  result := true;
+end;
+
+procedure TSDLTicks.LockFPS( targetFPS : Byte );
+var
+  currentTime       : UInt32;
+  targetTime        : single;
+begin
+  if ( targetFPS = 0 ) then
+    targetFPS := 1;
+
+  targetTime := FTicksPerSecond / targetFPS;
+
+  // delay to maintain a constant frame rate
+  repeat
+    currentTime := SDL_GetTicks;
+  until ( ( currentTime - FLockFPSLastTime ) > targetTime );
+
+  // reset the timer
+  FLockFPSLastTime := currentTime;
+end;
+
+end.
+
+ 
\ No newline at end of file
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlutils.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlutils.pas
new file mode 100644
index 00000000..e01f3cdb
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlutils.pas
@@ -0,0 +1,4363 @@
+unit sdlutils;
+{
+  $Id: sdlutils.pas,v 1.5 2006/11/19 18:56:44 savage Exp $
+
+}
+{******************************************************************************}
+{                                                                              }
+{       Borland Delphi SDL - Simple DirectMedia Layer                          }
+{                SDL Utility functions                                         }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Tom Jones <tigertomjones@gmx.de>                                             }
+{                                                                              }
+{ Portions created by Tom Jones are                                            }
+{ Copyright (C) 2000 - 2001 Tom Jones.                                         }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{ Róbert Kisnémeth <mikrobi@freemail.hu>                                       }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   Helper functions...                                                        }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{               2000 - TJ : Initial creation                                   }
+{                                                                              }
+{   July   13   2001 - DL : Added PutPixel and GetPixel routines.              }
+{                                                                              }
+{   Sept   14   2001 - RK : Added flipping routines.                           }
+{                                                                              }
+{   Sept   19   2001 - RK : Added PutPixel & line drawing & blitting with ADD  }
+{                           effect. Fixed a bug in SDL_PutPixel & SDL_GetPixel }
+{                           Added PSDLRect()                                   }
+{   Sept   22   2001 - DL : Removed need for Windows.pas by defining types here}
+{                           Also removed by poor attempt or a dialog box       }
+{                                                                              }
+{   Sept   25   2001 - RK : Added PixelTest, NewPutPixel, SubPixel, SubLine,   }
+{                           SubSurface, MonoSurface & TexturedSurface          }
+{                                                                              }
+{   Sept   26   2001 - DL : Made change so that it refers to native Pascal     }
+{                           types rather that Windows types. This makes it more}
+{                           portable to Linix.                                 }
+{                                                                              }
+{   Sept   27   2001 - RK : SDLUtils now can be compiled with FreePascal       }
+{                                                                              }
+{   Oct    27   2001 - JF : Added ScrollY function                             }
+{                                                                              }
+{   Jan    21   2002 - RK : Added SDL_ZoomSurface and SDL_WarpSurface          }
+{                                                                              }
+{   Mar    28   2002 - JF : Added SDL_RotateSurface                            }
+{                                                                              }
+{   May    13   2002 - RK : Improved SDL_FillRectAdd & SDL_FillRectSub         }
+{                                                                              }
+{   May    27   2002 - YS : GradientFillRect function                          }
+{                                                                              }
+{   May    30   2002 - RK : Added SDL_2xBlit, SDL_Scanline2xBlit               }
+{                           & SDL_50Scanline2xBlit                             }
+{                                                                              }
+{  June    12   2002 - RK : Added SDL_PixelTestSurfaceVsRect                   }
+{                                                                              }
+{  June    12   2002 - JF : Updated SDL_PixelTestSurfaceVsRect                 }
+{                                                                              }
+{ November  9   2002 - JF : Added Jason's boolean Surface functions            }
+{                                                                              }
+{ December 10   2002 - DE : Added Dean's SDL_ClipLine function                 }
+{                                                                              }
+{    April 26   2003 - SS : Incorporated JF's changes to SDL_ClipLine          }
+{                           Fixed SDL_ClipLine bug for non-zero cliprect x, y  }
+{                           Added overloaded SDL_DrawLine for dashed lines     }
+{                                                                              }
+{******************************************************************************}
+{
+  $Log: sdlutils.pas,v $
+  Revision 1.5  2006/11/19 18:56:44  savage
+  Removed Hints and Warnings.
+
+  Revision 1.4  2004/06/02 19:38:53  savage
+  Changes to SDL_GradientFillRect as suggested by
+  Ángel Eduardo García Hernández.  Many thanks.
+
+  Revision 1.3  2004/05/29 23:11:54  savage
+  Changes to SDL_ScaleSurfaceRect as suggested by
+  Ángel Eduardo García Hernández to fix a colour issue with the function. Many thanks.
+
+  Revision 1.2  2004/02/14 00:23:39  savage
+  As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change.
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+
+
+}
+
+interface
+
+{$I jedi-sdl.inc}
+
+uses
+{$IFDEF UNIX}
+  Types,
+{$IFNDEF DARWIN}
+  Xlib,
+{$ENDIF}
+{$ENDIF}
+  SysUtils,
+  sdl;
+
+type
+  TGradientStyle = ( gsHorizontal, gsVertical );
+
+// Pixel procedures
+function SDL_PixelTest( SrcSurface1 : PSDL_Surface; SrcRect1 : PSDL_Rect; SrcSurface2 :
+  PSDL_Surface; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) : Boolean;
+
+function SDL_GetPixel( SrcSurface : PSDL_Surface; x : integer; y : integer ) : Uint32;
+
+procedure SDL_PutPixel( DstSurface : PSDL_Surface; x : integer; y : integer; pixel :
+  Uint32 );
+
+procedure SDL_AddPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color :
+  cardinal );
+
+procedure SDL_SubPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color :
+  cardinal );
+
+// Line procedures
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal ); overload;
+
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal; DashLength, DashSpace : byte ); overload;
+
+procedure SDL_AddLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+
+procedure SDL_SubLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+
+// Surface procedures
+procedure SDL_AddSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_SubSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_MonoSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect; Color : cardinal );
+
+procedure SDL_TexturedSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect; Texture : PSDL_Surface;
+  TextureRect : PSDL_Rect );
+
+procedure SDL_ZoomSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; DstRect : PSDL_Rect );
+
+procedure SDL_WarpSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; UL, UR, LR, LL : PPoint );
+
+// Flip procedures
+procedure SDL_FlipRectH( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+
+procedure SDL_FlipRectV( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+
+function PSDLRect( aLeft, aTop, aWidth, aHeight : integer ) : PSDL_Rect;
+
+function SDLRect( aLeft, aTop, aWidth, aHeight : integer ) : TSDL_Rect; overload;
+
+function SDLRect( aRect : TRect ) : TSDL_Rect; overload;
+
+function SDL_ScaleSurfaceRect( SrcSurface : PSDL_Surface; SrcX1, SrcY1, SrcW, SrcH,
+  Width, Height : integer ) : PSDL_Surface;
+
+procedure SDL_ScrollY( DstSurface : PSDL_Surface; DifY : integer );
+
+procedure SDL_ScrollX( DstSurface : PSDL_Surface; DifX : integer );
+
+procedure SDL_RotateDeg( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Integer );
+
+procedure SDL_RotateRad( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Single );
+
+function ValidateSurfaceRect( DstSurface : PSDL_Surface; dstrect : PSDL_Rect ) : TSDL_Rect;
+
+// Fill Rect routine
+procedure SDL_FillRectAdd( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+
+procedure SDL_FillRectSub( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+
+procedure SDL_GradientFillRect( DstSurface : PSDL_Surface; const Rect : PSDL_Rect; const StartColor, EndColor : TSDL_Color; const Style : TGradientStyle );
+
+// NOTE for All SDL_2xblit... function : the dest surface must be 2x of the source surface!
+procedure SDL_2xBlit( Src, Dest : PSDL_Surface );
+
+procedure SDL_Scanline2xBlit( Src, Dest : PSDL_Surface );
+
+procedure SDL_50Scanline2xBlit( Src, Dest : PSDL_Surface );
+
+//
+function SDL_PixelTestSurfaceVsRect( SrcSurface1 : PSDL_Surface; SrcRect1 :
+  PSDL_Rect; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) :
+  boolean;
+
+// Jason's boolean Surface functions
+procedure SDL_ORSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_ANDSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+
+procedure SDL_GTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+procedure SDL_LTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+
+function SDL_ClipLine( var x1, y1, x2, y2 : Integer; ClipRect : PSDL_Rect ) : boolean;
+
+implementation
+
+uses
+  Math;
+
+function SDL_PixelTest( SrcSurface1 : PSDL_Surface; SrcRect1 : PSDL_Rect; SrcSurface2 :
+  PSDL_Surface; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) : boolean;
+var
+  Src_Rect1, Src_Rect2 : TSDL_Rect;
+  right1, bottom1 : integer;
+  right2, bottom2 : integer;
+  Scan1Start, Scan2Start, ScanWidth, ScanHeight : cardinal;
+  Mod1, Mod2   : cardinal;
+  Addr1, Addr2 : PtrUInt;
+  BPP          : cardinal;
+  Pitch1, Pitch2 : cardinal;
+  TransparentColor1, TransparentColor2 : cardinal;
+  tx, ty       : cardinal;
+// StartTick    : cardinal; // Auto Removed, Unused Variable
+  Color1, Color2 : cardinal;
+begin
+  Result := false;
+  if SrcRect1 = nil then
+  begin
+    with Src_Rect1 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface1.w;
+      h := SrcSurface1.h;
+    end;
+  end
+  else
+    Src_Rect1 := SrcRect1^;
+  if SrcRect2 = nil then
+  begin
+    with Src_Rect2 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface2.w;
+      h := SrcSurface2.h;
+    end;
+  end
+  else
+    Src_Rect2 := SrcRect2^;
+  with Src_Rect1 do
+  begin
+    Right1 := Left1 + w;
+    Bottom1 := Top1 + h;
+  end;
+  with Src_Rect2 do
+  begin
+    Right2 := Left2 + w;
+    Bottom2 := Top2 + h;
+  end;
+  if ( Left1 >= Right2 ) or ( Right1 <= Left2 ) or ( Top1 >= Bottom2 ) or ( Bottom1 <=
+    Top2 ) then
+    exit;
+  if Left1 <= Left2 then
+  begin
+    // 1. left, 2. right
+    Scan1Start := Src_Rect1.x + Left2 - Left1;
+    Scan2Start := Src_Rect2.x;
+    ScanWidth := Right1 - Left2;
+    with Src_Rect2 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end
+  else
+  begin
+    // 1. right, 2. left
+    Scan1Start := Src_Rect1.x;
+    Scan2Start := Src_Rect2.x + Left1 - Left2;
+    ScanWidth := Right2 - Left1;
+    with Src_Rect1 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end;
+  with SrcSurface1^ do
+  begin
+    Pitch1 := Pitch;
+    Addr1 := PtrUInt( Pixels );
+    inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+    with format^ do
+    begin
+      BPP := BytesPerPixel;
+      TransparentColor1 := colorkey;
+    end;
+  end;
+  with SrcSurface2^ do
+  begin
+    TransparentColor2 := format.colorkey;
+    Pitch2 := Pitch;
+    Addr2 := PtrUInt( Pixels );
+    inc( Addr2, Pitch2 * UInt32( Src_Rect2.y ) );
+  end;
+  Mod1 := Pitch1 - ( ScanWidth * BPP );
+  Mod2 := Pitch2 - ( ScanWidth * BPP );
+  inc( Addr1, BPP * Scan1Start );
+  inc( Addr2, BPP * Scan2Start );
+  if Top1 <= Top2 then
+  begin
+    // 1. up, 2. down
+    ScanHeight := Bottom1 - Top2;
+    if ScanHeight > Src_Rect2.h then
+      ScanHeight := Src_Rect2.h;
+    inc( Addr1, Pitch1 * UInt32( Top2 - Top1 ) );
+  end
+  else
+  begin
+    // 1. down, 2. up
+    ScanHeight := Bottom2 - Top1;
+    if ScanHeight > Src_Rect1.h then
+      ScanHeight := Src_Rect1.h;
+    inc( Addr2, Pitch2 * UInt32( Top1 - Top2 ) );
+  end;
+  case BPP of
+    1 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PByte( Addr1 )^ <> TransparentColor1 ) and ( PByte( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1 );
+          inc( Addr2 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    2 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PWord( Addr1 )^ <> TransparentColor1 ) and ( PWord( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 2 );
+          inc( Addr2, 2 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    3 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          Color1 := PLongWord( Addr1 )^ and $00FFFFFF;
+          Color2 := PLongWord( Addr2 )^ and $00FFFFFF;
+          if ( Color1 <> TransparentColor1 ) and ( Color2 <> TransparentColor2 )
+            then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 3 );
+          inc( Addr2, 3 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+    4 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PLongWord( Addr1 )^ <> TransparentColor1 ) and ( PLongWord( Addr2 )^ <>
+            TransparentColor2 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 4 );
+          inc( Addr2, 4 );
+        end;
+        inc( Addr1, Mod1 );
+        inc( Addr2, Mod2 );
+      end;
+  end;
+end;
+
+procedure SDL_AddPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color :
+  cardinal );
+var
+  SrcColor     : cardinal;
+  Addr         : PtrUInt;
+  R, G, B      : cardinal;
+begin
+  if Color = 0 then
+    exit;
+  with DstSurface^ do
+  begin
+    Addr := PtrUInt( Pixels ) + y * Pitch + x * format.BytesPerPixel;
+    SrcColor := PUInt32( Addr )^;
+    case format.BitsPerPixel of
+      8 :
+        begin
+          R := SrcColor and $E0 + Color and $E0;
+          G := SrcColor and $1C + Color and $1C;
+          B := SrcColor and $03 + Color and $03;
+          if R > $E0 then
+            R := $E0;
+          if G > $1C then
+            G := $1C;
+          if B > $03 then
+            B := $03;
+          PUInt8( Addr )^ := R or G or B;
+        end;
+      15 :
+        begin
+          R := SrcColor and $7C00 + Color and $7C00;
+          G := SrcColor and $03E0 + Color and $03E0;
+          B := SrcColor and $001F + Color and $001F;
+          if R > $7C00 then
+            R := $7C00;
+          if G > $03E0 then
+            G := $03E0;
+          if B > $001F then
+            B := $001F;
+          PUInt16( Addr )^ := R or G or B;
+        end;
+      16 :
+        begin
+          R := SrcColor and $F800 + Color and $F800;
+          G := SrcColor and $07C0 + Color and $07C0;
+          B := SrcColor and $001F + Color and $001F;
+          if R > $F800 then
+            R := $F800;
+          if G > $07C0 then
+            G := $07C0;
+          if B > $001F then
+            B := $001F;
+          PUInt16( Addr )^ := R or G or B;
+        end;
+      24 :
+        begin
+          R := SrcColor and $00FF0000 + Color and $00FF0000;
+          G := SrcColor and $0000FF00 + Color and $0000FF00;
+          B := SrcColor and $000000FF + Color and $000000FF;
+          if R > $FF0000 then
+            R := $FF0000;
+          if G > $00FF00 then
+            G := $00FF00;
+          if B > $0000FF then
+            B := $0000FF;
+          PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+        end;
+      32 :
+        begin
+          R := SrcColor and $00FF0000 + Color and $00FF0000;
+          G := SrcColor and $0000FF00 + Color and $0000FF00;
+          B := SrcColor and $000000FF + Color and $000000FF;
+          if R > $FF0000 then
+            R := $FF0000;
+          if G > $00FF00 then
+            G := $00FF00;
+          if B > $0000FF then
+            B := $0000FF;
+          PUInt32( Addr )^ := R or G or B;
+        end;
+    end;
+  end;
+end;
+
+procedure SDL_SubPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color :
+  cardinal );
+var
+  SrcColor     : cardinal;
+  Addr         : PtrUInt;
+  R, G, B      : cardinal;
+begin
+  if Color = 0 then
+    exit;
+  with DstSurface^ do
+  begin
+    Addr := PtrUInt( Pixels ) + y * Pitch + x * format.BytesPerPixel;
+    SrcColor := PUInt32( Addr )^;
+    case format.BitsPerPixel of
+      8 :
+        begin
+          R := SrcColor and $E0 - Color and $E0;
+          G := SrcColor and $1C - Color and $1C;
+          B := SrcColor and $03 - Color and $03;
+          if R > $E0 then
+            R := 0;
+          if G > $1C then
+            G := 0;
+          if B > $03 then
+            B := 0;
+          PUInt8( Addr )^ := R or G or B;
+        end;
+      15 :
+        begin
+          R := SrcColor and $7C00 - Color and $7C00;
+          G := SrcColor and $03E0 - Color and $03E0;
+          B := SrcColor and $001F - Color and $001F;
+          if R > $7C00 then
+            R := 0;
+          if G > $03E0 then
+            G := 0;
+          if B > $001F then
+            B := 0;
+          PUInt16( Addr )^ := R or G or B;
+        end;
+      16 :
+        begin
+          R := SrcColor and $F800 - Color and $F800;
+          G := SrcColor and $07C0 - Color and $07C0;
+          B := SrcColor and $001F - Color and $001F;
+          if R > $F800 then
+            R := 0;
+          if G > $07C0 then
+            G := 0;
+          if B > $001F then
+            B := 0;
+          PUInt16( Addr )^ := R or G or B;
+        end;
+      24 :
+        begin
+          R := SrcColor and $00FF0000 - Color and $00FF0000;
+          G := SrcColor and $0000FF00 - Color and $0000FF00;
+          B := SrcColor and $000000FF - Color and $000000FF;
+          if R > $FF0000 then
+            R := 0;
+          if G > $00FF00 then
+            G := 0;
+          if B > $0000FF then
+            B := 0;
+          PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+        end;
+      32 :
+        begin
+          R := SrcColor and $00FF0000 - Color and $00FF0000;
+          G := SrcColor and $0000FF00 - Color and $0000FF00;
+          B := SrcColor and $000000FF - Color and $000000FF;
+          if R > $FF0000 then
+            R := 0;
+          if G > $00FF00 then
+            G := 0;
+          if B > $0000FF then
+            B := 0;
+          PUInt32( Addr )^ := R or G or B;
+        end;
+    end;
+  end;
+end;
+// This procedure works on 8, 15, 16, 24 and 32 bits color depth surfaces.
+// In 8 bit color depth mode the procedure works with the default packed
+//  palette (RRRGGGBB). It handles all clipping.
+
+procedure SDL_AddSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel1 and $E0 + Pixel2 and $E0;
+                G := Pixel1 and $1C + Pixel2 and $1C;
+                B := Pixel1 and $03 + Pixel2 and $03;
+                if R > $E0 then
+                  R := $E0;
+                if G > $1C then
+                  G := $1C;
+                if B > $03 then
+                  B := $03;
+                PUInt8( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt8( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel1 and $7C00 + Pixel2 and $7C00;
+                G := Pixel1 and $03E0 + Pixel2 and $03E0;
+                B := Pixel1 and $001F + Pixel2 and $001F;
+                if R > $7C00 then
+                  R := $7C00;
+                if G > $03E0 then
+                  G := $03E0;
+                if B > $001F then
+                  B := $001F;
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel1 and $F800 + Pixel2 and $F800;
+                G := Pixel1 and $07E0 + Pixel2 and $07E0;
+                B := Pixel1 and $001F + Pixel2 and $001F;
+                if R > $F800 then
+                  R := $F800;
+                if G > $07E0 then
+                  G := $07E0;
+                if B > $001F then
+                  B := $001F;
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel1 and $FF0000 + Pixel2 and $FF0000;
+                G := Pixel1 and $00FF00 + Pixel2 and $00FF00;
+                B := Pixel1 and $0000FF + Pixel2 and $0000FF;
+                if R > $FF0000 then
+                  R := $FF0000;
+                if G > $00FF00 then
+                  G := $00FF00;
+                if B > $0000FF then
+                  B := $0000FF;
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end
+              else
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel1 and $FF0000 + Pixel2 and $FF0000;
+                G := Pixel1 and $00FF00 + Pixel2 and $00FF00;
+                B := Pixel1 and $0000FF + Pixel2 and $0000FF;
+                if R > $FF0000 then
+                  R := $FF0000;
+                if G > $00FF00 then
+                  G := $00FF00;
+                if B > $0000FF then
+                  B := $0000FF;
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+procedure SDL_SubSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+//{*_ebx, *}{*_esi, *}{*_edi, _esp*} : cardinal; // Auto Removed, Unused Variable (_ebx) // Auto Removed, Unused Variable (_esi) // Auto Removed, Unused Variable (_edi)
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := DestSurface.Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel2 and $E0 - Pixel1 and $E0;
+                G := Pixel2 and $1C - Pixel1 and $1C;
+                B := Pixel2 and $03 - Pixel1 and $03;
+                if R > $E0 then
+                  R := 0;
+                if G > $1C then
+                  G := 0;
+                if B > $03 then
+                  B := 0;
+                PUInt8( DestAddr )^ := R or G or B;
+              end;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel2 and $7C00 - Pixel1 and $7C00;
+                G := Pixel2 and $03E0 - Pixel1 and $03E0;
+                B := Pixel2 and $001F - Pixel1 and $001F;
+                if R > $7C00 then
+                  R := 0;
+                if G > $03E0 then
+                  G := 0;
+                if B > $001F then
+                  B := 0;
+                PUInt16( DestAddr )^ := R or G or B;
+              end;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel2 and $F800 - Pixel1 and $F800;
+                G := Pixel2 and $07E0 - Pixel1 and $07E0;
+                B := Pixel2 and $001F - Pixel1 and $001F;
+                if R > $F800 then
+                  R := 0;
+                if G > $07E0 then
+                  G := 0;
+                if B > $001F then
+                  B := 0;
+                PUInt16( DestAddr )^ := R or G or B;
+              end;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel2 and $FF0000 - Pixel1 and $FF0000;
+                G := Pixel2 and $00FF00 - Pixel1 and $00FF00;
+                B := Pixel2 and $0000FF - Pixel1 and $0000FF;
+                if R > $FF0000 then
+                  R := 0;
+                if G > $00FF00 then
+                  G := 0;
+                if B > $0000FF then
+                  B := 0;
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                R := Pixel2 and $FF0000 - Pixel1 and $FF0000;
+                G := Pixel2 and $00FF00 - Pixel1 and $00FF00;
+                B := Pixel2 and $0000FF - Pixel1 and $0000FF;
+                if R > $FF0000 then
+                  R := 0;
+                if G > $00FF00 then
+                  G := 0;
+                if B > $0000FF then
+                  B := 0;
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel2;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+procedure SDL_MonoSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect; Color : cardinal );
+var
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+//{*_ebx, *}{*_esi, *}{*_edi, _esp*} : cardinal; // Auto Removed, Unused Variable (_ebx) // Auto Removed, Unused Variable (_esi) // Auto Removed, Unused Variable (_edi)
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  TransparentColor, SrcColor : cardinal;
+  BPP          : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    BPP := DestSurface.Format.BytesPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case BPP of
+    1 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt8( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt8( DestAddr )^ := SrcColor;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    2 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt16( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt16( DestAddr )^ := SrcColor;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    3 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt32( SrcAddr )^ and $FFFFFF;
+            if SrcColor <> TransparentColor then
+              PUInt32( DestAddr )^ := ( PUInt32( DestAddr )^ and $FFFFFF ) or SrcColor;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    4 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt32( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt32( DestAddr )^ := SrcColor;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+// TextureRect.w and TextureRect.h are not used.
+// The TextureSurface's size MUST larger than the drawing rectangle!!!
+
+procedure SDL_TexturedSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect; Texture : PSDL_Surface;
+  TextureRect : PSDL_Rect );
+var
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr, TextAddr : PtrUInt;
+//{*_ebx, *}{*_esi, *}{*_edi, _esp*}: cardinal; // Auto Removed, Unused Variable (_ebx) // Auto Removed, Unused Variable (_esi) // Auto Removed, Unused Variable (_edi)
+  WorkX, WorkY : word;
+  SrcMod, DestMod, TextMod : cardinal;
+SrcColor, TransparentColor{*, TextureColor*} : cardinal; // Auto Removed, Unused Variable (TextureColor)
+  BPP          : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    BPP := DestSurface.Format.BitsPerPixel;
+  end;
+  with Texture^ do
+  begin
+    TextAddr := PtrUInt( Pixels ) + UInt32( TextureRect.y ) * Pitch +
+      UInt32( TextureRect.x ) * Format.BytesPerPixel;
+    TextMod := Pitch - Src.w * Format.BytesPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  SDL_LockSurface( Texture );
+  WorkY := Src.h;
+  case BPP of
+    1 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt8( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt8( DestAddr )^ := PUint8( TextAddr )^;
+            inc( SrcAddr );
+            inc( DestAddr );
+            inc( TextAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          inc( TextAddr, TextMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    2 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt16( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt16( DestAddr )^ := PUInt16( TextAddr )^;
+            inc( SrcAddr );
+            inc( DestAddr );
+            inc( TextAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          inc( TextAddr, TextMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    3 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt32( SrcAddr )^ and $FFFFFF;
+            if SrcColor <> TransparentColor then
+              PUInt32( DestAddr )^ := ( PUInt32( DestAddr )^ and $FFFFFF ) or ( PUInt32( TextAddr )^ and $FFFFFF );
+            inc( SrcAddr );
+            inc( DestAddr );
+            inc( TextAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          inc( TextAddr, TextMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    4 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            SrcColor := PUInt32( SrcAddr )^;
+            if SrcColor <> TransparentColor then
+              PUInt32( DestAddr )^ := PUInt32( TextAddr )^;
+            inc( SrcAddr );
+            inc( DestAddr );
+            inc( TextAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          inc( TextAddr, TextMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+  SDL_UnlockSurface( Texture );
+end;
+
+procedure SDL_ZoomSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; DstRect : PSDL_Rect );
+var
+  xc, yc       : cardinal;
+  rx, wx, ry, wy, ry16 : cardinal;
+  color        : cardinal;
+  modx, mody   : cardinal;
+begin
+  // Warning! No checks for surface pointers!!!
+  if srcrect = nil then
+    srcrect := @SrcSurface.clip_rect;
+  if dstrect = nil then
+    dstrect := @DstSurface.clip_rect;
+  if SDL_MustLock( SrcSurface ) then
+    SDL_LockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_LockSurface( DstSurface );
+  modx := trunc( ( srcrect.w / dstrect.w ) * 65536 );
+  mody := trunc( ( srcrect.h / dstrect.h ) * 65536 );
+  //rx := srcrect.x * 65536;
+  ry := srcrect.y * 65536;
+  wy := dstrect.y;
+  for yc := 0 to dstrect.h - 1 do
+  begin
+    rx := srcrect.x * 65536;
+    wx := dstrect.x;
+    ry16 := ry shr 16;
+    for xc := 0 to dstrect.w - 1 do
+    begin
+      color := SDL_GetPixel( SrcSurface, rx shr 16, ry16 );
+      SDL_PutPixel( DstSurface, wx, wy, color );
+      rx := rx + modx;
+      inc( wx );
+    end;
+    ry := ry + mody;
+    inc( wy );
+  end;
+  if SDL_MustLock( SrcSurface ) then
+    SDL_UnlockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_UnlockSurface( DstSurface );
+end;
+// Re-map a rectangular area into an area defined by four vertices
+// Converted from C to Pascal by KiCHY
+
+procedure SDL_WarpSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect; DstSurface : PSDL_Surface; UL, UR, LR, LL : PPoint );
+const
+  SHIFTS       = 15; // Extend ints to limit round-off error (try 2 - 20)
+  THRESH       = 1 shl SHIFTS; // Threshold for pixel size value
+  procedure CopySourceToDest( UL, UR, LR, LL : TPoint; x1, y1, x2, y2 : cardinal );
+  var
+    tm, lm, rm, bm, m : TPoint;
+    mx, my     : cardinal;
+    cr         : cardinal;
+  begin
+    // Does the destination area specify a single pixel?
+    if ( ( abs( ul.x - ur.x ) < THRESH ) and
+      ( abs( ul.x - lr.x ) < THRESH ) and
+      ( abs( ul.x - ll.x ) < THRESH ) and
+      ( abs( ul.y - ur.y ) < THRESH ) and
+      ( abs( ul.y - lr.y ) < THRESH ) and
+      ( abs( ul.y - ll.y ) < THRESH ) ) then
+    begin // Yes
+      cr := SDL_GetPixel( SrcSurface, ( x1 shr SHIFTS ), ( y1 shr SHIFTS ) );
+      SDL_PutPixel( DstSurface, ( ul.x shr SHIFTS ), ( ul.y shr SHIFTS ), cr );
+    end
+    else
+    begin // No
+      // Quarter the source and the destination, and then recurse
+      tm.x := ( ul.x + ur.x ) shr 1;
+      tm.y := ( ul.y + ur.y ) shr 1;
+      bm.x := ( ll.x + lr.x ) shr 1;
+      bm.y := ( ll.y + lr.y ) shr 1;
+      lm.x := ( ul.x + ll.x ) shr 1;
+      lm.y := ( ul.y + ll.y ) shr 1;
+      rm.x := ( ur.x + lr.x ) shr 1;
+      rm.y := ( ur.y + lr.y ) shr 1;
+      m.x := ( tm.x + bm.x ) shr 1;
+      m.y := ( tm.y + bm.y ) shr 1;
+      mx := ( x1 + x2 ) shr 1;
+      my := ( y1 + y2 ) shr 1;
+      CopySourceToDest( ul, tm, m, lm, x1, y1, mx, my );
+      CopySourceToDest( tm, ur, rm, m, mx, y1, x2, my );
+      CopySourceToDest( m, rm, lr, bm, mx, my, x2, y2 );
+      CopySourceToDest( lm, m, bm, ll, x1, my, mx, y2 );
+    end;
+  end;
+var
+  _UL, _UR, _LR, _LL : TPoint;
+  Rect_x, Rect_y, Rect_w, Rect_h : integer;
+begin
+  if SDL_MustLock( SrcSurface ) then
+    SDL_LockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_LockSurface( DstSurface );
+  if SrcRect = nil then
+  begin
+    Rect_x := 0;
+    Rect_y := 0;
+    Rect_w := ( SrcSurface.w - 1 ) shl SHIFTS;
+    Rect_h := ( SrcSurface.h - 1 ) shl SHIFTS;
+  end
+  else
+  begin
+    Rect_x := SrcRect.x;
+    Rect_y := SrcRect.y;
+    Rect_w := ( SrcRect.w - 1 ) shl SHIFTS;
+    Rect_h := ( SrcRect.h - 1 ) shl SHIFTS;
+  end;
+  // Shift all values to help reduce round-off error.
+  _ul.x := ul.x shl SHIFTS;
+  _ul.y := ul.y shl SHIFTS;
+  _ur.x := ur.x shl SHIFTS;
+  _ur.y := ur.y shl SHIFTS;
+  _lr.x := lr.x shl SHIFTS;
+  _lr.y := lr.y shl SHIFTS;
+  _ll.x := ll.x shl SHIFTS;
+  _ll.y := ll.y shl SHIFTS;
+  CopySourceToDest( _ul, _ur, _lr, _ll, Rect_x, Rect_y, Rect_w, Rect_h );
+  if SDL_MustLock( SrcSurface ) then
+    SDL_UnlockSurface( SrcSurface );
+  if SDL_MustLock( DstSurface ) then
+    SDL_UnlockSurface( DstSurface );
+end;
+
+// Draw a line between x1,y1 and x2,y2 to the given surface
+// NOTE: The surface must be locked before calling this!
+
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_PutPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_PutPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+// Draw a dashed line between x1,y1 and x2,y2 to the given surface
+// NOTE: The surface must be locked before calling this!
+
+procedure SDL_DrawLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal; DashLength, DashSpace : byte ); overload;
+var
+  dx, dy, sdx, sdy, x, y, px, py, counter : integer; drawdash : boolean;
+begin
+  counter := 0;
+  drawdash := true; //begin line drawing with dash
+
+  //Avoid invalid user-passed dash parameters
+  if ( DashLength < 1 )
+    then
+    DashLength := 1;
+  if ( DashSpace < 1 )
+    then
+    DashSpace := 0;
+
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+
+      //Alternate drawing dashes, or leaving spaces
+      if drawdash then
+      begin
+        SDL_PutPixel( DstSurface, px, py, Color );
+        inc( counter );
+        if ( counter > DashLength - 1 ) and ( DashSpace > 0 ) then
+        begin
+          drawdash := false;
+          counter := 0;
+        end;
+      end
+      else //space
+      begin
+        inc( counter );
+        if counter > DashSpace - 1 then
+        begin
+          drawdash := true;
+          counter := 0;
+        end;
+      end;
+
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+
+      //Alternate drawing dashes, or leaving spaces
+      if drawdash then
+      begin
+        SDL_PutPixel( DstSurface, px, py, Color );
+        inc( counter );
+        if ( counter > DashLength - 1 ) and ( DashSpace > 0 ) then
+        begin
+          drawdash := false;
+          counter := 0;
+        end;
+      end
+      else //space
+      begin
+        inc( counter );
+        if counter > DashSpace - 1 then
+        begin
+          drawdash := true;
+          counter := 0;
+        end;
+      end;
+
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+procedure SDL_AddLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_AddPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_AddPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+procedure SDL_SubLine( DstSurface : PSDL_Surface; x1, y1, x2, y2 : integer; Color :
+  cardinal );
+var
+  dx, dy, sdx, sdy, x, y, px, py : integer;
+begin
+  dx := x2 - x1;
+  dy := y2 - y1;
+  if dx < 0 then
+    sdx := -1
+  else
+    sdx := 1;
+  if dy < 0 then
+    sdy := -1
+  else
+    sdy := 1;
+  dx := sdx * dx + 1;
+  dy := sdy * dy + 1;
+  x := 0;
+  y := 0;
+  px := x1;
+  py := y1;
+  if dx >= dy then
+  begin
+    for x := 0 to dx - 1 do
+    begin
+      SDL_SubPixel( DstSurface, px, py, Color );
+      y := y + dy;
+      if y >= dx then
+      begin
+        y := y - dx;
+        py := py + sdy;
+      end;
+      px := px + sdx;
+    end;
+  end
+  else
+  begin
+    for y := 0 to dy - 1 do
+    begin
+      SDL_SubPixel( DstSurface, px, py, Color );
+      x := x + dx;
+      if x >= dy then
+      begin
+        x := x - dy;
+        px := px + sdx;
+      end;
+      py := py + sdy;
+    end;
+  end;
+end;
+
+// flips a rectangle vertically on given surface
+
+procedure SDL_FlipRectV( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+var
+  TmpRect      : TSDL_Rect;
+  Locked       : boolean;
+  y, FlipLength, RowLength : integer;
+  Row1, Row2   : Pointer;
+  OneRow       : TByteArray; // Optimize it if you wish
+begin
+  if DstSurface <> nil then
+  begin
+    if Rect = nil then
+    begin // if Rect=nil then we flip the whole surface
+      TmpRect := SDLRect( 0, 0, DstSurface.w, DstSurface.h );
+      Rect := @TmpRect;
+    end;
+    FlipLength := Rect^.h shr 1 - 1;
+    RowLength := Rect^.w * DstSurface^.format.BytesPerPixel;
+    if SDL_MustLock( DstSurface ) then
+    begin
+      Locked := true;
+      SDL_LockSurface( DstSurface );
+    end
+    else
+      Locked := false;
+    Row1 := pointer( PtrUInt( DstSurface^.Pixels ) + UInt32( Rect^.y ) *
+      DstSurface^.Pitch );
+    Row2 := pointer( PtrUInt( DstSurface^.Pixels ) + ( UInt32( Rect^.y ) + Rect^.h - 1 )
+      * DstSurface^.Pitch );
+    for y := 0 to FlipLength do
+    begin
+      Move( Row1^, OneRow, RowLength );
+      Move( Row2^, Row1^, RowLength );
+      Move( OneRow, Row2^, RowLength );
+      inc( PtrUInt( Row1 ), DstSurface^.Pitch );
+      dec( PtrUInt( Row2 ), DstSurface^.Pitch );
+    end;
+    if Locked then
+      SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+// flips a rectangle horizontally on given surface
+
+procedure SDL_FlipRectH( DstSurface : PSDL_Surface; Rect : PSDL_Rect );
+type
+  T24bit = packed array[ 0..2 ] of byte;
+  T24bitArray = packed array[ 0..8191 ] of T24bit;
+  P24bitArray = ^T24bitArray;
+  TLongWordArray = array[ 0..8191 ] of LongWord;
+  PLongWordArray = ^TLongWordArray;
+var
+  TmpRect      : TSDL_Rect;
+  Row8bit      : PByteArray;
+  Row16bit     : PWordArray;
+  Row24bit     : P24bitArray;
+  Row32bit     : PLongWordArray;
+  y, x, RightSide, FlipLength : integer;
+  Pixel        : cardinal;
+  Pixel24      : T24bit;
+  Locked       : boolean;
+begin
+  if DstSurface <> nil then
+  begin
+    if Rect = nil then
+    begin
+      TmpRect := SDLRect( 0, 0, DstSurface.w, DstSurface.h );
+      Rect := @TmpRect;
+    end;
+    FlipLength := Rect^.w shr 1 - 1;
+    if SDL_MustLock( DstSurface ) then
+    begin
+      Locked := true;
+      SDL_LockSurface( DstSurface );
+    end
+    else
+      Locked := false;
+    case DstSurface^.format.BytesPerPixel of
+      1 :
+        begin
+          Row8Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row8Bit^[ x ];
+              Row8Bit^[ x ] := Row8Bit^[ RightSide ];
+              Row8Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( PtrUInt( Row8Bit ), DstSurface^.pitch );
+          end;
+        end;
+      2 :
+        begin
+          Row16Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row16Bit^[ x ];
+              Row16Bit^[ x ] := Row16Bit^[ RightSide ];
+              Row16Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( PtrUInt( Row16Bit ), DstSurface^.pitch );
+          end;
+        end;
+      3 :
+        begin
+          Row24Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel24 := Row24Bit^[ x ];
+              Row24Bit^[ x ] := Row24Bit^[ RightSide ];
+              Row24Bit^[ RightSide ] := Pixel24;
+              dec( RightSide );
+            end;
+            inc( PtrUInt( Row24Bit ), DstSurface^.pitch );
+          end;
+        end;
+      4 :
+        begin
+          Row32Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+            DstSurface^.pitch );
+          for y := 1 to Rect^.h do
+          begin
+            RightSide := Rect^.w - 1;
+            for x := 0 to FlipLength do
+            begin
+              Pixel := Row32Bit^[ x ];
+              Row32Bit^[ x ] := Row32Bit^[ RightSide ];
+              Row32Bit^[ RightSide ] := Pixel;
+              dec( RightSide );
+            end;
+            inc( PtrUInt( Row32Bit ), DstSurface^.pitch );
+          end;
+        end;
+    end;
+    if Locked then
+      SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+// Use with caution! The procedure allocates memory for TSDL_Rect and return with its pointer.
+// But you MUST free it after you don't need it anymore!!!
+
+function PSDLRect( aLeft, aTop, aWidth, aHeight : integer ) : PSDL_Rect;
+var
+  Rect         : PSDL_Rect;
+begin
+  New( Rect );
+  with Rect^ do
+  begin
+    x := aLeft;
+    y := aTop;
+    w := aWidth;
+    h := aHeight;
+  end;
+  Result := Rect;
+end;
+
+function SDLRect( aLeft, aTop, aWidth, aHeight : integer ) : TSDL_Rect;
+begin
+  with result do
+  begin
+    x := aLeft;
+    y := aTop;
+    w := aWidth;
+    h := aHeight;
+  end;
+end;
+
+function SDLRect( aRect : TRect ) : TSDL_Rect;
+begin
+  with aRect do
+    result := SDLRect( Left, Top, Right - Left, Bottom - Top );
+end;
+
+procedure SDL_Stretch8( Surface, Dst_Surface : PSDL_Surface; x1, x2, y1, y2, yr, yw,
+  depth : integer );
+var
+  dx, dy, e, d, dx2 : integer;
+  src_pitch, dst_pitch : uint16;
+  src_pixels, dst_pixels : PUint8;
+begin
+  if ( yw >= dst_surface^.h ) then
+    exit;
+  dx := ( x2 - x1 );
+  dy := ( y2 - y1 );
+  dy := dy shl 1;
+  e := dy - dx;
+  dx2 := dx shl 1;
+  src_pitch := Surface^.pitch;
+  dst_pitch := dst_surface^.pitch;
+  src_pixels := PUint8( PtrUInt( Surface^.pixels ) + yr * src_pitch + y1 * depth );
+  dst_pixels := PUint8( PtrUInt( dst_surface^.pixels ) + yw * dst_pitch + x1 *
+    depth );
+  for d := 0 to dx - 1 do
+  begin
+    move( src_pixels^, dst_pixels^, depth );
+    while ( e >= 0 ) do
+    begin
+      inc( src_pixels, depth );
+      e := e - dx2;
+    end;
+    inc( dst_pixels, depth );
+    e := e + dy;
+  end;
+end;
+
+function sign( x : integer ) : integer;
+begin
+  if x > 0 then
+    result := 1
+  else
+    result := -1;
+end;
+
+// Stretches a part of a surface
+
+function SDL_ScaleSurfaceRect( SrcSurface : PSDL_Surface; SrcX1, SrcY1, SrcW, SrcH,
+  Width, Height : integer ) : PSDL_Surface;
+var
+  dst_surface  : PSDL_Surface;
+  dx, dy, e, d, dx2, srcx2, srcy2 : integer;
+  destx1, desty1 : integer;
+begin
+  srcx2 := srcx1 + SrcW;
+  srcy2 := srcy1 + SrcH;
+  result := nil;
+  destx1 := 0;
+  desty1 := 0;
+  dx := abs( integer( Height - desty1 ) );
+  dy := abs( integer( SrcY2 - SrcY1 ) );
+  e := ( dy shl 1 ) - dx;
+  dx2 := dx shl 1;
+  dy := dy shl 1;
+  dst_surface := SDL_CreateRGBSurface( SDL_HWPALETTE, width - destx1, Height -
+    desty1,
+    SrcSurface^.Format^.BitsPerPixel,
+    SrcSurface^.Format^.RMask,
+    SrcSurface^.Format^.GMask,
+    SrcSurface^.Format^.BMask,
+    SrcSurface^.Format^.AMask );
+  if ( dst_surface^.format^.BytesPerPixel = 1 ) then
+    SDL_SetColors( dst_surface, @SrcSurface^.format^.palette^.colors^[ 0 ], 0, 256 );
+  SDL_SetColorKey( dst_surface, sdl_srccolorkey, SrcSurface^.format^.colorkey );
+  if ( SDL_MustLock( dst_surface ) ) then
+    if ( SDL_LockSurface( dst_surface ) < 0 ) then
+      exit;
+  for d := 0 to dx - 1 do
+  begin
+    SDL_Stretch8( SrcSurface, dst_surface, destx1, Width, SrcX1, SrcX2, SrcY1, desty1,
+      SrcSurface^.format^.BytesPerPixel );
+    while e >= 0 do
+    begin
+      inc( SrcY1 );
+      e := e - dx2;
+    end;
+    inc( desty1 );
+    e := e + dy;
+  end;
+  if SDL_MUSTLOCK( dst_surface ) then
+    SDL_UnlockSurface( dst_surface );
+  result := dst_surface;
+end;
+
+procedure SDL_MoveLine( Surface : PSDL_Surface; x1, x2, y1, xofs, depth : integer );
+var
+  src_pixels, dst_pixels : PUint8;
+  i            : integer;
+begin
+  src_pixels := PUint8( PtrUInt( Surface^.pixels ) + Surface^.w * y1 * depth + x2 *
+    depth );
+  dst_pixels := PUint8( PtrUInt( Surface^.pixels ) + Surface^.w * y1 * depth + ( x2
+    + xofs ) * depth );
+  for i := x2 downto x1 do
+  begin
+    move( src_pixels^, dst_pixels^, depth );
+    dec( src_pixels );
+    dec( dst_pixels );
+  end;
+end;
+{ Return the pixel value at (x, y)
+NOTE: The surface must be locked before calling this! }
+
+function SDL_GetPixel( SrcSurface : PSDL_Surface; x : integer; y : integer ) : Uint32;
+var
+  bpp          : UInt32;
+  p            : PInteger;
+begin
+  bpp := SrcSurface.format.BytesPerPixel;
+  // Here p is the address to the pixel we want to retrieve
+  p := Pointer( PtrUInt( SrcSurface.pixels ) + UInt32( y ) * SrcSurface.pitch + UInt32( x ) *
+    bpp );
+  case bpp of
+    1 : result := PUint8( p )^;
+    2 : result := PUint16( p )^;
+    3 :
+      if ( SDL_BYTEORDER = SDL_BIG_ENDIAN ) then
+        result := PUInt8Array( p )[ 0 ] shl 16 or PUInt8Array( p )[ 1 ] shl 8 or
+          PUInt8Array( p )[ 2 ]
+      else
+        result := PUInt8Array( p )[ 0 ] or PUInt8Array( p )[ 1 ] shl 8 or
+          PUInt8Array( p )[ 2 ] shl 16;
+    4 : result := PUint32( p )^;
+  else
+    result := 0; // shouldn't happen, but avoids warnings
+  end;
+end;
+{ Set the pixel at (x, y) to the given value
+  NOTE: The surface must be locked before calling this! }
+
+procedure SDL_PutPixel( DstSurface : PSDL_Surface; x : integer; y : integer; pixel :
+  Uint32 );
+var
+  bpp          : UInt32;
+  p            : PInteger;
+begin
+  bpp := DstSurface.format.BytesPerPixel;
+  p := Pointer( PtrUInt( DstSurface.pixels ) + UInt32( y ) * DstSurface.pitch + UInt32( x )
+    * bpp );
+  case bpp of
+    1 : PUint8( p )^ := pixel;
+    2 : PUint16( p )^ := pixel;
+    3 :
+      if ( SDL_BYTEORDER = SDL_BIG_ENDIAN ) then
+      begin
+        PUInt8Array( p )[ 0 ] := ( pixel shr 16 ) and $FF;
+        PUInt8Array( p )[ 1 ] := ( pixel shr 8 ) and $FF;
+        PUInt8Array( p )[ 2 ] := pixel and $FF;
+      end
+      else
+      begin
+        PUInt8Array( p )[ 0 ] := pixel and $FF;
+        PUInt8Array( p )[ 1 ] := ( pixel shr 8 ) and $FF;
+        PUInt8Array( p )[ 2 ] := ( pixel shr 16 ) and $FF;
+      end;
+    4 :
+      PUint32( p )^ := pixel;
+  end;
+end;
+
+procedure SDL_ScrollY( DstSurface : PSDL_Surface; DifY : integer );
+var
+  r1, r2       : TSDL_Rect;
+  //buffer: PSDL_Surface;
+  YPos         : Integer;
+begin
+  if ( DstSurface <> nil ) and ( DifY <> 0 ) then
+  begin
+    //if DifY > 0 then // going up
+    //begin
+    ypos := 0;
+    r1.x := 0;
+    r2.x := 0;
+    r1.w := DstSurface.w;
+    r2.w := DstSurface.w;
+    r1.h := DifY;
+    r2.h := DifY;
+    while ypos < DstSurface.h do
+    begin
+      r1.y := ypos;
+      r2.y := ypos + DifY;
+      SDL_BlitSurface( DstSurface, @r2, DstSurface, @r1 );
+      ypos := ypos + DifY;
+    end;
+    //end
+    //else
+    //begin // Going Down
+    //end;
+  end;
+end;
+
+{procedure SDL_ScrollY(Surface: PSDL_Surface; DifY: integer);
+var
+  r1, r2: TSDL_Rect;
+  buffer: PSDL_Surface;
+begin
+  if (Surface <> nil) and (Dify <> 0) then
+  begin
+    buffer := SDL_CreateRGBSurface(SDL_HWSURFACE, (Surface^.w - DifY) * 2,
+      Surface^.h * 2,
+      Surface^.Format^.BitsPerPixel, 0, 0, 0, 0);
+    if buffer <> nil then
+    begin
+      if (buffer^.format^.BytesPerPixel = 1) then
+        SDL_SetColors(buffer, @Surface^.format^.palette^.colors^[0], 0, 256);
+      r1 := SDLRect(0, DifY, buffer^.w, buffer^.h);
+      r2 := SDLRect(0, 0, buffer^.w, buffer^.h);
+      SDL_BlitSurface(Surface, @r1, buffer, @r2);
+      SDL_BlitSurface(buffer, @r2, Surface, @r2);
+      SDL_FreeSurface(buffer);
+    end;
+  end;
+end;}
+
+procedure SDL_ScrollX( DstSurface : PSDL_Surface; DifX : integer );
+var
+  r1, r2       : TSDL_Rect;
+  buffer       : PSDL_Surface;
+begin
+  if ( DstSurface <> nil ) and ( DifX <> 0 ) then
+  begin
+    buffer := SDL_CreateRGBSurface( SDL_HWSURFACE, ( DstSurface^.w - DifX ) * 2,
+      DstSurface^.h * 2,
+      DstSurface^.Format^.BitsPerPixel,
+      DstSurface^.Format^.RMask,
+      DstSurface^.Format^.GMask,
+      DstSurface^.Format^.BMask,
+      DstSurface^.Format^.AMask );
+    if buffer <> nil then
+    begin
+      if ( buffer^.format^.BytesPerPixel = 1 ) then
+        SDL_SetColors( buffer, @DstSurface^.format^.palette^.colors^[ 0 ], 0, 256 );
+      r1 := SDLRect( DifX, 0, buffer^.w, buffer^.h );
+      r2 := SDLRect( 0, 0, buffer^.w, buffer^.h );
+      SDL_BlitSurface( DstSurface, @r1, buffer, @r2 );
+      SDL_BlitSurface( buffer, @r2, DstSurface, @r2 );
+      SDL_FreeSurface( buffer );
+    end;
+  end;
+end;
+
+procedure SDL_RotateRad( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Single );
+var
+  aSin, aCos   : Single;
+  MX, MY, DX, DY, NX, NY, SX, SY, OX, OY, Width, Height, TX, TY, RX, RY, ROX, ROY : Integer;
+  Colour, TempTransparentColour : UInt32;
+  MAXX, MAXY   : Integer;
+begin
+  // Rotate the surface to the target surface.
+  TempTransparentColour := SrcSurface.format.colorkey;
+  {if srcRect.w > srcRect.h then
+  begin
+    Width := srcRect.w;
+    Height := srcRect.w;
+  end
+  else
+  begin
+    Width := srcRect.h;
+    Height := srcRect.h;
+  end; }
+
+  maxx := DstSurface.w;
+  maxy := DstSurface.h;
+  aCos := cos( Angle );
+  aSin := sin( Angle );
+
+  Width := round( abs( srcrect.h * acos ) + abs( srcrect.w * asin ) );
+  Height := round( abs( srcrect.h * asin ) + abs( srcrect.w * acos ) );
+
+  OX := Width div 2;
+  OY := Height div 2; ;
+  MX := ( srcRect.x + ( srcRect.x + srcRect.w ) ) div 2;
+  MY := ( srcRect.y + ( srcRect.y + srcRect.h ) ) div 2;
+  ROX := ( -( srcRect.w div 2 ) ) + Offsetx;
+  ROY := ( -( srcRect.h div 2 ) ) + OffsetY;
+  Tx := ox + round( ROX * aSin - ROY * aCos );
+  Ty := oy + round( ROY * aSin + ROX * aCos );
+  SX := 0;
+  for DX := DestX - TX to DestX - TX + ( width ) do
+  begin
+    Inc( SX );
+    SY := 0;
+    for DY := DestY - TY to DestY - TY + ( Height ) do
+    begin
+      RX := SX - OX;
+      RY := SY - OY;
+      NX := round( mx + RX * aSin + RY * aCos ); //
+      NY := round( my + RY * aSin - RX * aCos ); //
+      // Used for testing only
+     //SDL_PutPixel(DestSurface.SDLSurfacePointer,DX,DY,0);
+      if ( ( DX > 0 ) and ( DX < MAXX ) ) and ( ( DY > 0 ) and ( DY < MAXY ) ) then
+      begin
+        if ( NX >= srcRect.x ) and ( NX <= srcRect.x + srcRect.w ) then
+        begin
+          if ( NY >= srcRect.y ) and ( NY <= srcRect.y + srcRect.h ) then
+          begin
+            Colour := SDL_GetPixel( SrcSurface, NX, NY );
+            if Colour <> TempTransparentColour then
+            begin
+              SDL_PutPixel( DstSurface, DX, DY, Colour );
+            end;
+          end;
+        end;
+      end;
+      inc( SY );
+    end;
+  end;
+end;
+
+procedure SDL_RotateDeg( DstSurface, SrcSurface : PSDL_Surface; SrcRect :
+  PSDL_Rect; DestX, DestY, OffsetX, OffsetY : Integer; Angle : Integer );
+begin
+  SDL_RotateRad( DstSurface, SrcSurface, SrcRect, DestX, DestY, OffsetX, OffsetY, DegToRad( Angle ) );
+end;
+
+function ValidateSurfaceRect( DstSurface : PSDL_Surface; dstrect : PSDL_Rect ) : TSDL_Rect;
+var
+  RealRect     : TSDL_Rect;
+  OutOfRange   : Boolean;
+begin
+  OutOfRange := false;
+  if dstrect = nil then
+  begin
+    RealRect.x := 0;
+    RealRect.y := 0;
+    RealRect.w := DstSurface.w;
+    RealRect.h := DstSurface.h;
+  end
+  else
+  begin
+    if dstrect.x < DstSurface.w then
+    begin
+      RealRect.x := dstrect.x;
+    end
+    else if dstrect.x < 0 then
+    begin
+      realrect.x := 0;
+    end
+    else
+    begin
+      OutOfRange := True;
+    end;
+    if dstrect.y < DstSurface.h then
+    begin
+      RealRect.y := dstrect.y;
+    end
+    else if dstrect.y < 0 then
+    begin
+      realrect.y := 0;
+    end
+    else
+    begin
+      OutOfRange := True;
+    end;
+    if OutOfRange = False then
+    begin
+      if realrect.x + dstrect.w <= DstSurface.w then
+      begin
+        RealRect.w := dstrect.w;
+      end
+      else
+      begin
+        RealRect.w := dstrect.w - realrect.x;
+      end;
+      if realrect.y + dstrect.h <= DstSurface.h then
+      begin
+        RealRect.h := dstrect.h;
+      end
+      else
+      begin
+        RealRect.h := dstrect.h - realrect.y;
+      end;
+    end;
+  end;
+  if OutOfRange = False then
+  begin
+    result := realrect;
+  end
+  else
+  begin
+    realrect.w := 0;
+    realrect.h := 0;
+    realrect.x := 0;
+    realrect.y := 0;
+    result := realrect;
+  end;
+end;
+
+procedure SDL_FillRectAdd( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+var
+  RealRect     : TSDL_Rect;
+  Addr         : pointer;
+  ModX, BPP    : cardinal;
+  x, y, R, G, B, SrcColor : cardinal;
+begin
+  RealRect := ValidateSurfaceRect( DstSurface, DstRect );
+  if ( RealRect.w > 0 ) and ( RealRect.h > 0 ) then
+  begin
+    SDL_LockSurface( DstSurface );
+    BPP := DstSurface.format.BytesPerPixel;
+    with DstSurface^ do
+    begin
+      Addr := pointer( PtrUInt( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+      ModX := Pitch - UInt32( RealRect.w ) * BPP;
+    end;
+    case DstSurface.format.BitsPerPixel of
+      8 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $E0 + Color and $E0;
+              G := SrcColor and $1C + Color and $1C;
+              B := SrcColor and $03 + Color and $03;
+              if R > $E0 then
+                R := $E0;
+              if G > $1C then
+                G := $1C;
+              if B > $03 then
+                B := $03;
+              PUInt8( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      15 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $7C00 + Color and $7C00;
+              G := SrcColor and $03E0 + Color and $03E0;
+              B := SrcColor and $001F + Color and $001F;
+              if R > $7C00 then
+                R := $7C00;
+              if G > $03E0 then
+                G := $03E0;
+              if B > $001F then
+                B := $001F;
+              PUInt16( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      16 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $F800 + Color and $F800;
+              G := SrcColor and $07C0 + Color and $07C0;
+              B := SrcColor and $001F + Color and $001F;
+              if R > $F800 then
+                R := $F800;
+              if G > $07C0 then
+                G := $07C0;
+              if B > $001F then
+                B := $001F;
+              PUInt16( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      24 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 + Color and $00FF0000;
+              G := SrcColor and $0000FF00 + Color and $0000FF00;
+              B := SrcColor and $000000FF + Color and $000000FF;
+              if R > $FF0000 then
+                R := $FF0000;
+              if G > $00FF00 then
+                G := $00FF00;
+              if B > $0000FF then
+                B := $0000FF;
+              PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      32 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 + Color and $00FF0000;
+              G := SrcColor and $0000FF00 + Color and $0000FF00;
+              B := SrcColor and $000000FF + Color and $000000FF;
+              if R > $FF0000 then
+                R := $FF0000;
+              if G > $00FF00 then
+                G := $00FF00;
+              if B > $0000FF then
+                B := $0000FF;
+              PUInt32( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+    end;
+    SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+procedure SDL_FillRectSub( DstSurface : PSDL_Surface; dstrect : PSDL_Rect; color : UInt32 );
+var
+  RealRect     : TSDL_Rect;
+  Addr         : pointer;
+  ModX, BPP    : cardinal;
+  x, y, R, G, B, SrcColor : cardinal;
+begin
+  RealRect := ValidateSurfaceRect( DstSurface, DstRect );
+  if ( RealRect.w > 0 ) and ( RealRect.h > 0 ) then
+  begin
+    SDL_LockSurface( DstSurface );
+    BPP := DstSurface.format.BytesPerPixel;
+    with DstSurface^ do
+    begin
+      Addr := pointer( PtrUInt( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+      ModX := Pitch - UInt32( RealRect.w ) * BPP;
+    end;
+    case DstSurface.format.BitsPerPixel of
+      8 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $E0 - Color and $E0;
+              G := SrcColor and $1C - Color and $1C;
+              B := SrcColor and $03 - Color and $03;
+              if R > $E0 then
+                R := 0;
+              if G > $1C then
+                G := 0;
+              if B > $03 then
+                B := 0;
+              PUInt8( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      15 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $7C00 - Color and $7C00;
+              G := SrcColor and $03E0 - Color and $03E0;
+              B := SrcColor and $001F - Color and $001F;
+              if R > $7C00 then
+                R := 0;
+              if G > $03E0 then
+                G := 0;
+              if B > $001F then
+                B := 0;
+              PUInt16( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      16 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $F800 - Color and $F800;
+              G := SrcColor and $07C0 - Color and $07C0;
+              B := SrcColor and $001F - Color and $001F;
+              if R > $F800 then
+                R := 0;
+              if G > $07C0 then
+                G := 0;
+              if B > $001F then
+                B := 0;
+              PUInt16( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      24 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 - Color and $00FF0000;
+              G := SrcColor and $0000FF00 - Color and $0000FF00;
+              B := SrcColor and $000000FF - Color and $000000FF;
+              if R > $FF0000 then
+                R := 0;
+              if G > $00FF00 then
+                G := 0;
+              if B > $0000FF then
+                B := 0;
+              PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+      32 :
+        begin
+          for y := 0 to RealRect.h - 1 do
+          begin
+            for x := 0 to RealRect.w - 1 do
+            begin
+              SrcColor := PUInt32( Addr )^;
+              R := SrcColor and $00FF0000 - Color and $00FF0000;
+              G := SrcColor and $0000FF00 - Color and $0000FF00;
+              B := SrcColor and $000000FF - Color and $000000FF;
+              if R > $FF0000 then
+                R := 0;
+              if G > $00FF00 then
+                G := 0;
+              if B > $0000FF then
+                B := 0;
+              PUInt32( Addr )^ := R or G or B;
+              inc( PtrUInt( Addr ), BPP );
+            end;
+            inc( PtrUInt( Addr ), ModX );
+          end;
+        end;
+    end;
+    SDL_UnlockSurface( DstSurface );
+  end;
+end;
+
+procedure SDL_GradientFillRect( DstSurface : PSDL_Surface; const Rect : PSDL_Rect; const StartColor, EndColor : TSDL_Color; const Style : TGradientStyle );
+var
+  FBC          : array[ 0..255 ] of Cardinal;
+  // temp vars
+  i, YR, YG, YB, SR, SG, SB, DR, DG, DB : Integer;
+
+  TempStepV, TempStepH : Single;
+  TempLeft, TempTop, TempHeight, TempWidth : integer;
+  TempRect     : TSDL_Rect;
+
+begin
+  // calc FBC
+  YR := StartColor.r;
+  YG := StartColor.g;
+  YB := StartColor.b;
+  SR := YR;
+  SG := YG;
+  SB := YB;
+  DR := EndColor.r - SR;
+  DG := EndColor.g - SG;
+  DB := EndColor.b - SB;
+
+  for i := 0 to 255 do
+  begin
+    FBC[ i ] := SDL_MapRGB( DstSurface.format, YR, YG, YB );
+    YR := SR + round( DR / 255 * i );
+    YG := SG + round( DG / 255 * i );
+    YB := SB + round( DB / 255 * i );
+  end;
+
+  //  if aStyle = 1 then begin
+  TempStepH := Rect.w / 255;
+  TempStepV := Rect.h / 255;
+  TempHeight := Trunc( TempStepV + 1 );
+  TempWidth := Trunc( TempStepH + 1 );
+  TempTop := 0;
+  TempLeft := 0;
+  TempRect.x := Rect.x;
+  TempRect.y := Rect.y;
+  TempRect.h := Rect.h;
+  TempRect.w := Rect.w;
+
+  case Style of
+    gsHorizontal :
+      begin
+        TempRect.h := TempHeight;
+        for i := 0 to 255 do
+        begin
+          TempRect.y := Rect.y + TempTop;
+          SDL_FillRect( DstSurface, @TempRect, FBC[ i ] );
+          TempTop := Trunc( TempStepV * i );
+        end;
+      end;
+    gsVertical :
+      begin
+        TempRect.w := TempWidth;
+        for i := 0 to 255 do
+        begin
+          TempRect.x := Rect.x + TempLeft;
+          SDL_FillRect( DstSurface, @TempRect, FBC[ i ] );
+          TempLeft := Trunc( TempStepH * i );
+        end;
+      end;
+  end;
+end;
+
+procedure SDL_2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+  SrcPitch, DestPitch, x, y : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := PtrUInt( Src.Pixels );
+  WriteRow := PtrUInt( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  case Src.format.BytesPerPixel of
+    1 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt8( WriteAddr )^ := PUInt8( ReadAddr )^;
+          PUInt8( WriteAddr + 1 )^ := PUInt8( ReadAddr )^;
+          PUInt8( WriteAddr + DestPitch )^ := PUInt8( ReadAddr )^;
+          PUInt8( WriteAddr + DestPitch + 1 )^ := PUInt8( ReadAddr )^;
+          inc( ReadAddr );
+          inc( WriteAddr, 2 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    2 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt16( WriteAddr )^ := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr + 2 )^ := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr + DestPitch )^ := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr + DestPitch + 2 )^ := PUInt16( ReadAddr )^;
+          inc( ReadAddr, 2 );
+          inc( WriteAddr, 4 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    3 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt32( WriteAddr )^ := ( PUInt32( WriteAddr )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          PUInt32( WriteAddr + 3 )^ := ( PUInt32( WriteAddr + 3 )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          PUInt32( WriteAddr + DestPitch )^ := ( PUInt32( WriteAddr + DestPitch )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          PUInt32( WriteAddr + DestPitch + 3 )^ := ( PUInt32( WriteAddr + DestPitch + 3 )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          inc( ReadAddr, 3 );
+          inc( WriteAddr, 6 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    4 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt32( WriteAddr )^ := PUInt32( ReadAddr )^;
+          PUInt32( WriteAddr + 4 )^ := PUInt32( ReadAddr )^;
+          PUInt32( WriteAddr + DestPitch )^ := PUInt32( ReadAddr )^;
+          PUInt32( WriteAddr + DestPitch + 4 )^ := PUInt32( ReadAddr )^;
+          inc( ReadAddr, 4 );
+          inc( WriteAddr, 8 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+procedure SDL_Scanline2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+  SrcPitch, DestPitch, x, y : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := PtrUInt( Src.Pixels );
+  WriteRow := PtrUInt( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  case Src.format.BytesPerPixel of
+    1 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt8( WriteAddr )^ := PUInt8( ReadAddr )^;
+          PUInt8( WriteAddr + 1 )^ := PUInt8( ReadAddr )^;
+          inc( ReadAddr );
+          inc( WriteAddr, 2 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    2 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt16( WriteAddr )^ := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr + 2 )^ := PUInt16( ReadAddr )^;
+          inc( ReadAddr, 2 );
+          inc( WriteAddr, 4 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    3 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt32( WriteAddr )^ := ( PUInt32( WriteAddr )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          PUInt32( WriteAddr + 3 )^ := ( PUInt32( WriteAddr + 3 )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          inc( ReadAddr, 3 );
+          inc( WriteAddr, 6 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    4 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          PUInt32( WriteAddr )^ := PUInt32( ReadAddr )^;
+          PUInt32( WriteAddr + 4 )^ := PUInt32( ReadAddr )^;
+          inc( ReadAddr, 4 );
+          inc( WriteAddr, 8 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+procedure SDL_50Scanline2xBlit( Src, Dest : PSDL_Surface );
+var
+  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+  SrcPitch, DestPitch, x, y, Color : UInt32;
+begin
+  if ( Src = nil ) or ( Dest = nil ) then
+    exit;
+  if ( Src.w shl 1 ) < Dest.w then
+    exit;
+  if ( Src.h shl 1 ) < Dest.h then
+    exit;
+
+  if SDL_MustLock( Src ) then
+    SDL_LockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_LockSurface( Dest );
+
+  ReadRow := PtrUInt( Src.Pixels );
+  WriteRow := PtrUInt( Dest.Pixels );
+
+  SrcPitch := Src.pitch;
+  DestPitch := Dest.pitch;
+
+  case Src.format.BitsPerPixel of
+    8 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          Color := PUInt8( ReadAddr )^;
+          PUInt8( WriteAddr )^ := Color;
+          PUInt8( WriteAddr + 1 )^ := Color;
+          Color := ( Color shr 1 ) and $6D; {%01101101}
+          PUInt8( WriteAddr + DestPitch )^ := Color;
+          PUInt8( WriteAddr + DestPitch + 1 )^ := Color;
+          inc( ReadAddr );
+          inc( WriteAddr, 2 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    15 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          Color := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr )^ := Color;
+          PUInt16( WriteAddr + 2 )^ := Color;
+          Color := ( Color shr 1 ) and $3DEF; {%0011110111101111}
+          PUInt16( WriteAddr + DestPitch )^ := Color;
+          PUInt16( WriteAddr + DestPitch + 2 )^ := Color;
+          inc( ReadAddr, 2 );
+          inc( WriteAddr, 4 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    16 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          Color := PUInt16( ReadAddr )^;
+          PUInt16( WriteAddr )^ := Color;
+          PUInt16( WriteAddr + 2 )^ := Color;
+          Color := ( Color shr 1 ) and $7BEF; {%0111101111101111}
+          PUInt16( WriteAddr + DestPitch )^ := Color;
+          PUInt16( WriteAddr + DestPitch + 2 )^ := Color;
+          inc( ReadAddr, 2 );
+          inc( WriteAddr, 4 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    24 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          Color := ( PUInt32( WriteAddr )^ and $FF000000 ) or ( PUInt32( ReadAddr )^ and $00FFFFFF );
+          PUInt32( WriteAddr )^ := Color;
+          PUInt32( WriteAddr + 3 )^ := Color;
+          Color := ( Color shr 1 ) and $007F7F7F; {%011111110111111101111111}
+          PUInt32( WriteAddr + DestPitch )^ := Color;
+          PUInt32( WriteAddr + DestPitch + 3 )^ := Color;
+          inc( ReadAddr, 3 );
+          inc( WriteAddr, 6 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+    32 : for y := 1 to Src.h do
+      begin
+        ReadAddr := ReadRow;
+        WriteAddr := WriteRow;
+        for x := 1 to Src.w do
+        begin
+          Color := PUInt32( ReadAddr )^;
+          PUInt32( WriteAddr )^ := Color;
+          PUInt32( WriteAddr + 4 )^ := Color;
+          Color := ( Color shr 1 ) and $7F7F7F7F;
+          PUInt32( WriteAddr + DestPitch )^ := Color;
+          PUInt32( WriteAddr + DestPitch + 4 )^ := Color;
+          inc( ReadAddr, 4 );
+          inc( WriteAddr, 8 );
+        end;
+        inc( PtrUInt( ReadRow ), SrcPitch );
+        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+      end;
+  end;
+
+  if SDL_MustLock( Src ) then
+    SDL_UnlockSurface( Src );
+  if SDL_MustLock( Dest ) then
+    SDL_UnlockSurface( Dest );
+end;
+
+function SDL_PixelTestSurfaceVsRect( SrcSurface1 : PSDL_Surface; SrcRect1 :
+  PSDL_Rect; SrcRect2 : PSDL_Rect; Left1, Top1, Left2, Top2 : integer ) :
+  boolean;
+var
+  Src_Rect1, Src_Rect2 : TSDL_Rect;
+  right1, bottom1 : integer;
+  right2, bottom2 : integer;
+  Scan1Start, {Scan2Start,} ScanWidth, ScanHeight : cardinal;
+  Mod1         : cardinal;
+  Addr1        : PtrUInt;
+  BPP          : cardinal;
+  Pitch1       : cardinal;
+  TransparentColor1 : cardinal;
+  tx, ty       : cardinal;
+// StartTick    : cardinal; // Auto Removed, Unused Variable
+  Color1       : cardinal;
+begin
+  Result := false;
+  if SrcRect1 = nil then
+  begin
+    with Src_Rect1 do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface1.w;
+      h := SrcSurface1.h;
+    end;
+  end
+  else
+    Src_Rect1 := SrcRect1^;
+
+  Src_Rect2 := SrcRect2^;
+  with Src_Rect1 do
+  begin
+    Right1 := Left1 + w;
+    Bottom1 := Top1 + h;
+  end;
+  with Src_Rect2 do
+  begin
+    Right2 := Left2 + w;
+    Bottom2 := Top2 + h;
+  end;
+  if ( Left1 >= Right2 ) or ( Right1 <= Left2 ) or ( Top1 >= Bottom2 ) or ( Bottom1 <= Top2 ) then
+    exit;
+  if Left1 <= Left2 then
+  begin
+    // 1. left, 2. right
+    Scan1Start := Src_Rect1.x + Left2 - Left1;
+    //Scan2Start := Src_Rect2.x;
+    ScanWidth := Right1 - Left2;
+    with Src_Rect2 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end
+  else
+  begin
+    // 1. right, 2. left
+    Scan1Start := Src_Rect1.x;
+    //Scan2Start := Src_Rect2.x + Left1 - Left2;
+    ScanWidth := Right2 - Left1;
+    with Src_Rect1 do
+      if ScanWidth > w then
+        ScanWidth := w;
+  end;
+  with SrcSurface1^ do
+  begin
+    Pitch1 := Pitch;
+    Addr1 := PtrUInt( Pixels );
+    inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+    with format^ do
+    begin
+      BPP := BytesPerPixel;
+      TransparentColor1 := colorkey;
+    end;
+  end;
+
+  Mod1 := Pitch1 - ( ScanWidth * BPP );
+
+  inc( Addr1, BPP * Scan1Start );
+
+  if Top1 <= Top2 then
+  begin
+    // 1. up, 2. down
+    ScanHeight := Bottom1 - Top2;
+    if ScanHeight > Src_Rect2.h then
+      ScanHeight := Src_Rect2.h;
+    inc( Addr1, Pitch1 * UInt32( Top2 - Top1 ) );
+  end
+  else
+  begin
+    // 1. down, 2. up
+    ScanHeight := Bottom2 - Top1;
+    if ScanHeight > Src_Rect1.h then
+      ScanHeight := Src_Rect1.h;
+
+  end;
+  case BPP of
+    1 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PByte( Addr1 )^ <> TransparentColor1 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    2 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PWord( Addr1 )^ <> TransparentColor1 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 2 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    3 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          Color1 := PLongWord( Addr1 )^ and $00FFFFFF;
+
+          if ( Color1 <> TransparentColor1 )
+            then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 3 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+    4 :
+      for ty := 1 to ScanHeight do
+      begin
+        for tx := 1 to ScanWidth do
+        begin
+          if ( PLongWord( Addr1 )^ <> TransparentColor1 ) then
+          begin
+            Result := true;
+            exit;
+          end;
+          inc( Addr1, 4 );
+
+        end;
+        inc( Addr1, Mod1 );
+
+      end;
+  end;
+end;
+
+procedure SDL_ORSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+{*R, *}{*G, *}{*B, *}Pixel1, Pixel2, TransparentColor : cardinal; // Auto Removed, Unused Variable (R) // Auto Removed, Unused Variable (G) // Auto Removed, Unused Variable (B)
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              PUInt8( DestAddr )^ := Pixel2 or Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+
+              PUInt16( DestAddr )^ := Pixel2 or Pixel1;
+
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+
+              PUInt16( DestAddr )^ := Pixel2 or Pixel1;
+
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+
+              PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel2 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+
+              PUInt32( DestAddr )^ := Pixel2 or Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+procedure SDL_ANDSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+{*R, *}{*G, *}{*B, *}Pixel1, Pixel2, TransparentColor : cardinal; // Auto Removed, Unused Variable (R) // Auto Removed, Unused Variable (G) // Auto Removed, Unused Variable (B)
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              PUInt8( DestAddr )^ := Pixel2 and Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+
+              PUInt16( DestAddr )^ := Pixel2 and Pixel1;
+
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+
+              PUInt16( DestAddr )^ := Pixel2 and Pixel1;
+
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+
+              PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel2 and Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+
+              PUInt32( DestAddr )^ := Pixel2 and Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+
+
+procedure SDL_GTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                if Pixel2 and $E0 > Pixel1 and $E0 then
+                  R := Pixel2 and $E0
+                else
+                  R := Pixel1 and $E0;
+                if Pixel2 and $1C > Pixel1 and $1C then
+                  G := Pixel2 and $1C
+                else
+                  G := Pixel1 and $1C;
+                if Pixel2 and $03 > Pixel1 and $03 then
+                  B := Pixel2 and $03
+                else
+                  B := Pixel1 and $03;
+
+                if R > $E0 then
+                  R := $E0;
+                if G > $1C then
+                  G := $1C;
+                if B > $03 then
+                  B := $03;
+                PUInt8( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt8( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $7C00 > Pixel1 and $7C00 then
+                  R := Pixel2 and $7C00
+                else
+                  R := Pixel1 and $7C00;
+                if Pixel2 and $03E0 > Pixel1 and $03E0 then
+                  G := Pixel2 and $03E0
+                else
+                  G := Pixel1 and $03E0;
+                if Pixel2 and $001F > Pixel1 and $001F then
+                  B := Pixel2 and $001F
+                else
+                  B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $F800 > Pixel1 and $F800 then
+                  R := Pixel2 and $F800
+                else
+                  R := Pixel1 and $F800;
+                if Pixel2 and $07E0 > Pixel1 and $07E0 then
+                  G := Pixel2 and $07E0
+                else
+                  G := Pixel1 and $07E0;
+                if Pixel2 and $001F > Pixel1 and $001F then
+                  B := Pixel2 and $001F
+                else
+                  B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $FF0000 > Pixel1 and $FF0000 then
+                  R := Pixel2 and $FF0000
+                else
+                  R := Pixel1 and $FF0000;
+                if Pixel2 and $00FF00 > Pixel1 and $00FF00 then
+                  G := Pixel2 and $00FF00
+                else
+                  G := Pixel1 and $00FF00;
+                if Pixel2 and $0000FF > Pixel1 and $0000FF then
+                  B := Pixel2 and $0000FF
+                else
+                  B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end
+              else
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $FF0000 > Pixel1 and $FF0000 then
+                  R := Pixel2 and $FF0000
+                else
+                  R := Pixel1 and $FF0000;
+                if Pixel2 and $00FF00 > Pixel1 and $00FF00 then
+                  G := Pixel2 and $00FF00
+                else
+                  G := Pixel1 and $00FF00;
+                if Pixel2 and $0000FF > Pixel1 and $0000FF then
+                  B := Pixel2 and $0000FF
+                else
+                  B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+
+procedure SDL_LTSurface( SrcSurface : PSDL_Surface; SrcRect : PSDL_Rect;
+  DestSurface : PSDL_Surface; DestRect : PSDL_Rect );
+var
+  R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+  Src, Dest    : TSDL_Rect;
+  Diff         : integer;
+  SrcAddr, DestAddr : PtrUInt;
+  WorkX, WorkY : word;
+  SrcMod, DestMod : cardinal;
+  Bits         : cardinal;
+begin
+  if ( SrcSurface = nil ) or ( DestSurface = nil ) then
+    exit; // Remove this to make it faster
+  if ( SrcSurface.Format.BitsPerPixel <> DestSurface.Format.BitsPerPixel ) then
+    exit; // Remove this to make it faster
+  if SrcRect = nil then
+  begin
+    with Src do
+    begin
+      x := 0;
+      y := 0;
+      w := SrcSurface.w;
+      h := SrcSurface.h;
+    end;
+  end
+  else
+    Src := SrcRect^;
+  if DestRect = nil then
+  begin
+    Dest.x := 0;
+    Dest.y := 0;
+  end
+  else
+    Dest := DestRect^;
+  Dest.w := Src.w;
+  Dest.h := Src.h;
+  with DestSurface.Clip_Rect do
+  begin
+    // Source's right side is greater than the dest.cliprect
+    if Dest.x + Src.w > x + w then
+    begin
+      smallint( Src.w ) := x + w - Dest.x;
+      smallint( Dest.w ) := x + w - Dest.x;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's bottom side is greater than the dest.clip
+    if Dest.y + Src.h > y + h then
+    begin
+      smallint( Src.h ) := y + h - Dest.y;
+      smallint( Dest.h ) := y + h - Dest.y;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+    // Source's left side is less than the dest.clip
+    if Dest.x < x then
+    begin
+      Diff := x - Dest.x;
+      Src.x := Src.x + Diff;
+      smallint( Src.w ) := smallint( Src.w ) - Diff;
+      Dest.x := x;
+      smallint( Dest.w ) := smallint( Dest.w ) - Diff;
+      if smallint( Dest.w ) < 1 then
+        exit;
+    end;
+    // Source's Top side is less than the dest.clip
+    if Dest.y < y then
+    begin
+      Diff := y - Dest.y;
+      Src.y := Src.y + Diff;
+      smallint( Src.h ) := smallint( Src.h ) - Diff;
+      Dest.y := y;
+      smallint( Dest.h ) := smallint( Dest.h ) - Diff;
+      if smallint( Dest.h ) < 1 then
+        exit;
+    end;
+  end;
+  with SrcSurface^ do
+  begin
+    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+      Format.BytesPerPixel;
+    SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+    TransparentColor := Format.colorkey;
+  end;
+  with DestSurface^ do
+  begin
+    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+      Format.BytesPerPixel;
+    DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+    Bits := Format.BitsPerPixel;
+  end;
+  SDL_LockSurface( SrcSurface );
+  SDL_LockSurface( DestSurface );
+  WorkY := Src.h;
+  case bits of
+    8 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt8( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt8( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+                if Pixel2 and $E0 < Pixel1 and $E0 then
+                  R := Pixel2 and $E0
+                else
+                  R := Pixel1 and $E0;
+                if Pixel2 and $1C < Pixel1 and $1C then
+                  G := Pixel2 and $1C
+                else
+                  G := Pixel1 and $1C;
+                if Pixel2 and $03 < Pixel1 and $03 then
+                  B := Pixel2 and $03
+                else
+                  B := Pixel1 and $03;
+
+                if R > $E0 then
+                  R := $E0;
+                if G > $1C then
+                  G := $1C;
+                if B > $03 then
+                  B := $03;
+                PUInt8( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt8( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr );
+            inc( DestAddr );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    15 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $7C00 < Pixel1 and $7C00 then
+                  R := Pixel2 and $7C00
+                else
+                  R := Pixel1 and $7C00;
+                if Pixel2 and $03E0 < Pixel1 and $03E0 then
+                  G := Pixel2 and $03E0
+                else
+                  G := Pixel1 and $03E0;
+                if Pixel2 and $001F < Pixel1 and $001F then
+                  B := Pixel2 and $001F
+                else
+                  B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    16 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt16( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt16( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $F800 < Pixel1 and $F800 then
+                  R := Pixel2 and $F800
+                else
+                  R := Pixel1 and $F800;
+                if Pixel2 and $07E0 < Pixel1 and $07E0 then
+                  G := Pixel2 and $07E0
+                else
+                  G := Pixel1 and $07E0;
+                if Pixel2 and $001F < Pixel1 and $001F then
+                  B := Pixel2 and $001F
+                else
+                  B := Pixel1 and $001F;
+
+                PUInt16( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt16( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 2 );
+            inc( DestAddr, 2 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    24 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^ and $00FFFFFF;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^ and $00FFFFFF;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $FF0000 < Pixel1 and $FF0000 then
+                  R := Pixel2 and $FF0000
+                else
+                  R := Pixel1 and $FF0000;
+                if Pixel2 and $00FF00 < Pixel1 and $00FF00 then
+                  G := Pixel2 and $00FF00
+                else
+                  G := Pixel1 and $00FF00;
+                if Pixel2 and $0000FF < Pixel1 and $0000FF then
+                  B := Pixel2 and $0000FF
+                else
+                  B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or ( R or G or B );
+              end
+              else
+                PUInt32( DestAddr )^ := PUInt32( DestAddr )^ and $FF000000 or Pixel1;
+            end;
+            inc( SrcAddr, 3 );
+            inc( DestAddr, 3 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+    32 :
+      begin
+        repeat
+          WorkX := Src.w;
+          repeat
+            Pixel1 := PUInt32( SrcAddr )^;
+            if ( Pixel1 <> TransparentColor ) and ( Pixel1 <> 0 ) then
+            begin
+              Pixel2 := PUInt32( DestAddr )^;
+              if Pixel2 > 0 then
+              begin
+
+                if Pixel2 and $FF0000 < Pixel1 and $FF0000 then
+                  R := Pixel2 and $FF0000
+                else
+                  R := Pixel1 and $FF0000;
+                if Pixel2 and $00FF00 < Pixel1 and $00FF00 then
+                  G := Pixel2 and $00FF00
+                else
+                  G := Pixel1 and $00FF00;
+                if Pixel2 and $0000FF < Pixel1 and $0000FF then
+                  B := Pixel2 and $0000FF
+                else
+                  B := Pixel1 and $0000FF;
+
+                PUInt32( DestAddr )^ := R or G or B;
+              end
+              else
+                PUInt32( DestAddr )^ := Pixel1;
+            end;
+            inc( SrcAddr, 4 );
+            inc( DestAddr, 4 );
+            dec( WorkX );
+          until WorkX = 0;
+          inc( SrcAddr, SrcMod );
+          inc( DestAddr, DestMod );
+          dec( WorkY );
+        until WorkY = 0;
+      end;
+  end;
+  SDL_UnlockSurface( SrcSurface );
+  SDL_UnlockSurface( DestSurface );
+end;
+
+// Will clip the x1,x2,y1,x2 params to the ClipRect provided
+
+function SDL_ClipLine( var x1, y1, x2, y2 : Integer; ClipRect : PSDL_Rect ) : boolean;
+var
+  tflag, flag1, flag2 : word;
+  txy, xedge, yedge : Integer;
+  slope        : single;
+
+  function ClipCode( x, y : Integer ) : word;
+  begin
+    Result := 0;
+    if x < ClipRect.x then
+      Result := 1;
+    if x >= ClipRect.w + ClipRect.x then
+      Result := Result or 2;
+    if y < ClipRect.y then
+      Result := Result or 4;
+    if y >= ClipRect.h + ClipRect.y then
+      Result := Result or 8;
+  end;
+
+begin
+  flag1 := ClipCode( x1, y1 );
+  flag2 := ClipCode( x2, y2 );
+  result := true;
+
+  while true do
+  begin
+    if ( flag1 or flag2 ) = 0 then
+      Exit; // all in
+
+    if ( flag1 and flag2 ) <> 0 then
+    begin
+      result := false;
+      Exit; // all out
+    end;
+
+    if flag2 = 0 then
+    begin
+      txy := x1; x1 := x2; x2 := txy;
+      txy := y1; y1 := y2; y2 := txy;
+      tflag := flag1; flag1 := flag2; flag2 := tflag;
+    end;
+
+    if ( flag2 and 3 ) <> 0 then
+    begin
+      if ( flag2 and 1 ) <> 0 then
+        xedge := ClipRect.x
+      else
+        xedge := ClipRect.w + ClipRect.x - 1; // back 1 pixel otherwise we end up in a loop
+
+      slope := ( y2 - y1 ) / ( x2 - x1 );
+      y2 := y1 + Round( slope * ( xedge - x1 ) );
+      x2 := xedge;
+    end
+    else
+    begin
+      if ( flag2 and 4 ) <> 0 then
+        yedge := ClipRect.y
+      else
+        yedge := ClipRect.h + ClipRect.y - 1; // up 1 pixel otherwise we end up in a loop
+
+      slope := ( x2 - x1 ) / ( y2 - y1 );
+      x2 := x1 + Round( slope * ( yedge - y1 ) );
+      y2 := yedge;
+    end;
+
+    flag2 := ClipCode( x2, y2 );
+  end;
+end;
+
+end.
+
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlwindow.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlwindow.pas
new file mode 100644
index 00000000..99eea304
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/sdlwindow.pas
@@ -0,0 +1,566 @@
+unit sdlwindow;
+{
+  $Id: sdlwindow.pas,v 1.9 2006/10/22 18:55:25 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{                SDL Window Wrapper                                            }
+{                                                                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominique Louis are                                      }
+{ Copyright (C) 2004 - 2100 Dominique Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   SDL Window Wrapper                                                         }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.dll on Windows platforms                                               }
+{   libSDL-1.1.so.0 on Linux platform                                          }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{ January    31     2003 - DL : Initial creation                               }
+{                                                                              }
+{
+  $Log: sdlwindow.pas,v $
+  Revision 1.9  2006/10/22 18:55:25  savage
+  Slight Change to handle OpenGL context
+
+  Revision 1.8  2005/08/03 18:57:32  savage
+  Various updates and additions. Mainly to handle OpenGL 3D Window support and better cursor support for the mouse class
+
+  Revision 1.7  2004/09/30 22:35:47  savage
+  Changes, enhancements and additions as required to get SoAoS working.
+
+  Revision 1.6  2004/09/12 21:52:58  savage
+  Slight changes to fix some issues with the sdl classes.
+
+  Revision 1.5  2004/05/10 21:11:49  savage
+  changes required to help get SoAoS off the ground.
+
+  Revision 1.4  2004/05/01 14:59:27  savage
+  Updated code
+
+  Revision 1.3  2004/04/23 10:45:28  savage
+  Changes made by Dean Ellis to work more modularly.
+
+  Revision 1.2  2004/03/31 10:06:41  savage
+  Changed so that it now compiles, but is untested.
+
+  Revision 1.1  2004/02/05 00:08:20  savage
+  Module 1.0 release
+  
+}
+{******************************************************************************}
+
+interface
+
+{$i jedi-sdl.inc}
+
+uses
+  Classes,
+  sdl,
+  sdlinput,
+  sdlticks;
+
+type
+  TSDLNotifyEvent =  procedure {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLUpdateEvent =  procedure( aElapsedTime : single ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLResizeEvent =  procedure( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLUserEvent =  procedure( aType : UInt8; aCode : integer; aData1 : Pointer; aData2 : Pointer ) {$IFNDEF NOT_OO}of object{$ENDIF};
+  TSDLActiveEvent = procedure( aGain: UInt8; aState: UInt8 ) {$IFNDEF NOT_OO}of object{$ENDIF};
+
+  TSDLBaseWindow = class( TObject )
+  private
+    FDisplaySurface : PSDL_Surface;
+    FVideoFlags : Uint32;
+    FOnDestroy: TSDLNotifyEvent;
+    FOnCreate: TSDLNotifyEvent;
+    FOnShow: TSDLNotifyEvent;
+    FOnResize: TSDLResizeEvent;
+    FOnUpdate: TSDLUpdateEvent;
+    FOnRender: TSDLNotifyEvent;
+    FOnClose: TSDLNotifyEvent;
+    FLoaded: Boolean;
+    FRendering: Boolean;
+    FHeight: integer;
+    FBitDepth: integer;
+    FWidth: integer;
+    FInputManager: TSDLInputManager;
+    FCaptionText : PChar;
+    FIconName : PChar;
+    FOnActive: TSDLActiveEvent;
+    FOnQuit: TSDLNotifyEvent;
+    FOnExpose: TSDLNotifyEvent;
+    FOnUser: TSDLUserEvent;
+    FTimer : TSDLTicks;
+  protected
+    procedure DoActive( aGain: UInt8; aState: UInt8 );
+    procedure DoCreate;
+    procedure DoClose;
+    procedure DoDestroy;
+    procedure DoUpdate( aElapsedTime : single );
+    procedure DoQuit;
+    procedure DoRender;
+    procedure DoResize( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 );
+    procedure DoShow;
+    procedure DoUser( aType : UInt8; aCode : integer; aData1 : Pointer; aData2 : Pointer );
+    procedure DoExpose;
+    procedure Render; virtual;
+    procedure Update( aElapsedTime : single ); virtual;
+    procedure InitialiseObjects; virtual;
+    procedure RestoreObjects; virtual;
+    procedure DeleteObjects; virtual;
+    function Flip : integer; virtual;
+    property OnActive : TSDLActiveEvent read FOnActive write FOnActive;
+    property OnClose: TSDLNotifyEvent read FOnClose write FOnClose;
+    property OnDestroy : TSDLNotifyEvent read FOnDestroy write FOnDestroy;
+    property OnCreate : TSDLNotifyEvent read FOnCreate write FOnCreate;
+    property OnUpdate: TSDLUpdateEvent read FOnUpdate write FOnUpdate;
+    property OnQuit : TSDLNotifyEvent read FOnQuit write FOnQuit;
+    property OnResize : TSDLResizeEvent read FOnResize write FOnResize;
+    property OnRender: TSDLNotifyEvent read FOnRender write FOnRender;
+    property OnShow : TSDLNotifyEvent read FOnShow write FOnShow;
+    property OnUser : TSDLUserEvent read FOnUser write FOnUser;
+    property OnExpose : TSDLNotifyEvent read FOnExpose write FOnExpose;
+    property DisplaySurface: PSDL_Surface read FDisplaySurface;
+  public
+    property InputManager : TSDLInputManager read FInputManager;
+    property Loaded : Boolean read FLoaded;
+    property Width : integer read FWidth;
+    property Height : integer read FHeight;
+    property BitDepth : integer read FBitDepth;
+    property Rendering : Boolean read FRendering write FRendering;
+    procedure SetCaption( const aCaptionText : string; const aIconName : string );
+    procedure GetCaption( var aCaptionText : string; var aIconName : string );
+    procedure SetIcon( aIcon : PSDL_Surface; aMask: UInt8 );
+    procedure ActivateVideoMode;
+    constructor Create( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 ); virtual;
+    destructor Destroy; override;
+    procedure InitialiseEnvironment;
+    function Show : Boolean; virtual;
+  end;
+
+  TSDLCustomWindow = class( TSDLBaseWindow )
+  public
+    property OnCreate;
+    property OnDestroy;
+    property OnClose;
+    property OnShow;
+    property OnResize;
+    property OnRender;
+    property OnUpdate;
+    property DisplaySurface;
+  end;
+
+  TSDL2DWindow = class( TSDLCustomWindow )
+  public
+    constructor Create( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 = SDL_DOUBLEBUF or SDL_SWSURFACE); override;
+    procedure Render; override;
+    procedure Update( aElapsedTime : single ); override;
+    procedure InitialiseObjects; override;
+    procedure RestoreObjects; override;
+    procedure DeleteObjects; override;
+    function Flip : integer; override;
+  end;
+
+  TSDL3DWindow = class( TSDLCustomWindow )
+  public
+    constructor Create( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 = SDL_OPENGL or SDL_DOUBLEBUF); override;
+    function Flip : integer; override;
+    procedure Render; override;
+    procedure Update( aElapsedTime : single ); override;
+    procedure InitialiseObjects; override;
+    procedure RestoreObjects; override;
+    procedure DeleteObjects; override;
+  end;
+
+
+
+implementation
+
+uses
+  logger,
+  SysUtils;
+
+{ TSDLBaseWindow }
+procedure TSDLBaseWindow.ActivateVideoMode;
+begin
+  FDisplaySurface := SDL_SetVideoMode( FWidth, FHeight, FBitDepth, FVideoFlags);
+  if (FDisplaySurface = nil) then
+  begin
+    Log.LogError( Format('Could not set video mode: %s', [SDL_GetError]), 'Main');
+    exit;
+  end;
+
+  SetCaption( 'Made with JEDI-SDL', 'JEDI-SDL Icon' );
+end;
+
+constructor TSDLBaseWindow.Create( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 );
+begin
+  inherited Create;
+  SDL_Init(SDL_INIT_EVERYTHING);
+  FInputManager := TSDLInputManager.Create( [ itJoystick, itKeyBoard, itMouse ]);
+  FTimer := TSDLTicks.Create;
+
+  FWidth := aWidth;
+  FHeight := aHeight;
+  FBitDepth := aBitDepth;
+  FVideoFlags := aVideoFlags;
+
+  DoCreate;
+end;
+
+procedure TSDLBaseWindow.DeleteObjects;
+begin
+  FLoaded := False;
+end;
+
+destructor TSDLBaseWindow.Destroy;
+begin
+  DoDestroy;
+  if FLoaded then
+    DeleteObjects;
+  if FInputManager <> nil then
+    FreeAndNil( FInputManager );
+  if FTimer <> nil then
+    FreeAndNil( FTimer );
+  if FDisplaySurface <> nil then
+    SDL_FreeSurface( FDisplaySurface );
+  inherited Destroy;
+  SDL_Quit;
+end;
+
+procedure TSDLBaseWindow.DoActive(aGain, aState: UInt8);
+begin
+  if Assigned( FOnActive ) then
+  begin
+    FOnActive( aGain, aState );
+  end;
+end;
+
+procedure TSDLBaseWindow.DoClose;
+begin
+  if Assigned( FOnClose ) then
+  begin
+    FOnClose;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoCreate;
+begin
+  if Assigned( FOnCreate ) then
+  begin
+    FOnCreate;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoDestroy;
+begin
+  if Assigned( FOnDestroy ) then
+  begin
+    FOnDestroy;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoExpose;
+begin
+  if Assigned( FOnExpose ) then
+  begin
+    FOnExpose;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoUpdate( aElapsedTime : single );
+begin
+  if Assigned( FOnUpdate ) then
+  begin
+    FOnUpdate( aElapsedTime );
+  end;
+end;
+
+procedure TSDLBaseWindow.DoQuit;
+begin
+  FRendering := false;
+  if Assigned( FOnQuit ) then
+  begin
+    FOnQuit;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoRender;
+begin
+  if Assigned(  FOnRender ) then
+  begin
+    FOnRender;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoResize( aWidth : integer; aHeight : integer; aBitDepth : integer; aVideoFlags : Uint32 );
+begin
+  // resize to the new size
+  SDL_FreeSurface(FDisplaySurface);
+  FWidth := aWidth;
+  FHeight := aHeight;
+  FBitDepth := aBitDepth;
+  FVideoFlags := aVideoFlags;
+  FDisplaySurface := SDL_SetVideoMode(aWidth, aHeight, aBitDepth, aVideoFlags);
+  if Assigned( FOnResize ) then
+  begin
+    FOnResize( aWidth, aHeight, aBitDepth, aVideoFlags );
+  end;
+end;
+
+procedure TSDLBaseWindow.DoShow;
+begin
+  if Assigned( FOnShow ) then
+  begin
+    FOnShow;
+  end;
+end;
+
+procedure TSDLBaseWindow.DoUser(aType: UInt8; aCode: integer; aData1, aData2: Pointer);
+begin
+  if Assigned(  FOnUser ) then
+  begin
+    FOnUser( aType, aCode, aData1, aData2 );
+  end;
+end;
+
+function TSDLBaseWindow.Flip : integer;
+begin
+  result := 0;
+end;
+
+procedure TSDLBaseWindow.GetCaption( var aCaptionText : string; var aIconName : string );
+begin
+  aCaptionText := string( FCaptionText );
+  aIconName := string( FIconName );
+end;
+
+procedure TSDLBaseWindow.InitialiseEnvironment;
+begin
+  InitialiseObjects;
+  RestoreObjects;
+end;
+
+procedure TSDLBaseWindow.InitialiseObjects;
+begin
+  FLoaded := True;
+end;
+
+procedure TSDLBaseWindow.Update( aElapsedTime : single );
+begin
+  DoUpdate( aElapsedTime );
+end;
+
+procedure TSDLBaseWindow.Render;
+begin
+  DoRender;
+end;
+
+procedure TSDLBaseWindow.RestoreObjects;
+begin
+  FLoaded := false;
+end;
+
+procedure TSDLBaseWindow.SetCaption( const aCaptionText : string; const aIconName : string );
+begin
+  if FCaptionText <> aCaptionText then
+  begin
+    FCaptionText := PChar( aCaptionText );
+    FIconName := PChar( aIconName );
+    SDL_WM_SetCaption( FCaptionText, FIconName );
+  end;
+end;
+
+procedure TSDLBaseWindow.SetIcon(aIcon: PSDL_Surface; aMask: UInt8);
+begin
+  SDL_WM_SetIcon( aIcon, aMask );
+end;
+
+function TSDLBaseWindow.Show : Boolean;
+var
+  eBaseWindowEvent : TSDL_Event;
+begin
+  DoShow;
+
+  FTimer.Init;
+
+  FRendering := true;
+  // repeat until we are told not to render
+  while FRendering do
+  begin
+    // wait for an event
+    while SDL_PollEvent( @eBaseWindowEvent ) > 0 do
+    begin
+
+      // check for a quit event
+      case eBaseWindowEvent.type_ of
+        SDL_ACTIVEEVENT :
+        begin
+          DoActive( eBaseWindowEvent.active.gain, eBaseWindowEvent.active.state );
+        end;
+
+        SDL_QUITEV :
+        begin
+          DoQuit;
+          DoClose;
+        end;
+
+        SDL_USEREVENT :
+        begin
+          DoUser( eBaseWindowEvent.user.type_, eBaseWindowEvent.user.code, eBaseWindowEvent.user.data1, eBaseWindowEvent.user.data2 );
+        end;
+
+        SDL_VIDEOEXPOSE :
+        begin
+          DoExpose;
+        end;
+
+        SDL_VIDEORESIZE :
+        begin
+          DoResize( eBaseWindowEvent.resize.w, eBaseWindowEvent.resize.h, FDisplaySurface.format.BitsPerPixel, FVideoflags );
+        end;
+
+
+      end;
+      InputManager.UpdateInputs( eBaseWindowEvent );
+    end;
+    // Prepare the Next Frame
+    Update( FTimer.GetElapsedSeconds );
+    // Display the Next Frame
+    Render;
+    // Flip the surfaces
+    Flip;
+  end;
+
+  Result := FRendering;
+end;
+
+{ TSDL2DWindow }
+
+constructor TSDL2DWindow.Create(aWidth, aHeight, aBitDepth: integer; aVideoFlags: Uint32);
+begin
+  // make sure double buffer is always included in the video flags
+  inherited Create(aWidth,aHeight, aBitDepth, aVideoFlags or SDL_DOUBLEBUF);
+end;
+
+procedure TSDL2DWindow.DeleteObjects;
+begin
+  inherited;
+
+end;
+
+function TSDL2DWindow.Flip: integer;
+begin
+  // let's show the back buffer
+  result := SDL_Flip( FDisplaySurface );
+end;
+
+procedure TSDL2DWindow.InitialiseObjects;
+begin
+  inherited;
+
+end;
+
+procedure TSDL2DWindow.Update( aElapsedTime : single );
+begin
+  inherited;
+
+end;
+
+procedure TSDL2DWindow.Render;
+begin
+  inherited;
+
+end;
+
+procedure TSDL2DWindow.RestoreObjects;
+begin
+  inherited;
+
+end;
+
+{ TSDL3DWindow }
+
+constructor TSDL3DWindow.Create(aWidth,
+  aHeight, aBitDepth: integer; aVideoFlags: Uint32);
+begin
+  // make sure opengl is always included in the video flags
+  inherited Create(aWidth,aHeight, aBitDepth, aVideoFlags or SDL_OPENGL or SDL_DOUBLEBUF);
+end;
+
+procedure TSDL3DWindow.DeleteObjects;
+begin
+  inherited;
+
+end;
+
+function TSDL3DWindow.Flip : integer;
+begin
+  SDL_GL_SwapBuffers;
+  result := 0;
+end;
+
+procedure TSDL3DWindow.InitialiseObjects;
+begin
+  inherited;
+
+end;
+
+procedure TSDL3DWindow.Update( aElapsedTime : single );
+begin
+  inherited;
+
+end;
+
+procedure TSDL3DWindow.Render;
+begin
+  inherited;
+  
+end;
+
+procedure TSDL3DWindow.RestoreObjects;
+begin
+  inherited;
+
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL/Pas/userpreferences.pas b/src/lib/JEDI-SDL/SDL/Pas/userpreferences.pas
new file mode 100644
index 00000000..aed326d1
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL/Pas/userpreferences.pas
@@ -0,0 +1,159 @@
+unit userpreferences;
+{
+  $Id: userpreferences.pas,v 1.1 2004/09/30 22:35:47 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{          JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer          }
+{                 Base Class for User Preferences                              }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Dominqiue Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Portions created by Dominqiue Louis are                                      }
+{ Copyright (C) 2000 - 2001 Dominqiue Louis.                                   }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{                                                                              }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   The SDL Runtime libraris on Win32  : SDL.dll on Linux : libSDL.so          }
+{   They are available from...                                                 }
+{   http://www.libsdl.org .                                                    }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   September   23 2004 - DL : Initial Creation                                }
+{
+  $Log: userpreferences.pas,v $
+  Revision 1.1  2004/09/30 22:35:47  savage
+  Changes, enhancements and additions as required to get SoAoS working.
+
+
+}
+{******************************************************************************}
+
+interface
+
+uses
+  Classes;
+
+type
+  TUserPreferences = class
+  private
+    FAutoSave: Boolean;
+    procedure CheckAutoSave;
+  protected
+    function GetDefaultBoolean( const Index : Integer ) : Boolean; virtual; abstract;
+    function GetBoolean( const Index : Integer ) : Boolean; virtual; abstract;
+    procedure SetBoolean( const Index : Integer; const Value : Boolean ); virtual;
+    function GetDefaultDateTime( const Index : Integer ) : TDateTime; virtual; abstract;
+    function GetDateTime( const Index : Integer ) : TDateTime; virtual; abstract;
+    procedure SetDateTime( const Index : Integer; const Value : TDateTime ); virtual;
+    function GetDefaultInteger( const Index : Integer ) : Integer; virtual; abstract;
+    function GetInteger( const Index : Integer ) : Integer; virtual; abstract;
+    procedure SetInteger( const Index : Integer; const Value : Integer ); virtual;
+    function GetDefaultFloat( const Index : Integer ) : single; virtual; abstract;
+    function GetFloat( const Index : Integer ) : single; virtual; abstract;
+    procedure SetFloat( const Index : Integer; const Value : single ); virtual;
+    function GetDefaultString( const Index : Integer ) : string; virtual; abstract;
+    function GetString( const Index : Integer ) : string; virtual; abstract;
+    procedure SetString( const Index : Integer; const Value : string ); virtual;
+    function GetDefaultBinaryStream( const Index : Integer ) : TStream; virtual; abstract;
+    function GetBinaryStream( const Index : Integer ) : TStream; virtual; abstract;
+    procedure SetBinaryStream( const Index : Integer; const Value : TStream ); virtual;
+  public
+    procedure Update; virtual; abstract;
+    constructor Create; virtual;
+    destructor Destroy; override;
+    property AutoSave : Boolean read FAutoSave write FAutoSave;
+  end;
+
+implementation
+
+{ TUserPreferences }
+procedure TUserPreferences.CheckAutoSave;
+begin
+  if FAutoSave then
+    Update;
+end;
+
+constructor TUserPreferences.Create;
+begin
+  inherited;
+  FAutoSave := false;
+end;
+
+destructor TUserPreferences.Destroy;
+begin
+
+  inherited;
+end;
+
+procedure TUserPreferences.SetBinaryStream( const Index : Integer; const Value : TStream );
+begin
+  CheckAutoSave;
+end;
+
+procedure TUserPreferences.SetBoolean(const Index: Integer; const Value: Boolean);
+begin
+  CheckAutoSave;
+end;
+
+procedure TUserPreferences.SetDateTime(const Index: Integer; const Value: TDateTime);
+begin
+  CheckAutoSave;
+end;
+
+procedure TUserPreferences.SetFloat(const Index: Integer; const Value: single);
+begin
+  CheckAutoSave;
+end;
+
+procedure TUserPreferences.SetInteger(const Index, Value: Integer);
+begin
+  CheckAutoSave;
+end;
+
+procedure TUserPreferences.SetString(const Index: Integer; const Value: string);
+begin
+  CheckAutoSave;
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/SDL_Image/Pas/sdl_image.pas b/src/lib/JEDI-SDL/SDL_Image/Pas/sdl_image.pas
new file mode 100644
index 00000000..4468f036
--- /dev/null
+++ b/src/lib/JEDI-SDL/SDL_Image/Pas/sdl_image.pas
@@ -0,0 +1,350 @@
+unit sdl_image;
+{
+  $Id: sdl_image.pas,v 1.15 2007/12/05 22:52:23 savage Exp $
+  
+}
+{******************************************************************************}
+{                                                                              }
+{       Borland Delphi SDL_Image - An example image loading library for use    }
+{                                  with SDL                                    }
+{       Conversion of the Simple DirectMedia Layer Image Headers               }
+{                                                                              }
+{ Portions created by Sam Lantinga <slouken@devolution.com> are                }
+{ Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga                     }
+{ 5635-34 Springhouse Dr.                                                      }
+{ Pleasanton, CA 94588 (USA)                                                   }
+{                                                                              }
+{ All Rights Reserved.                                                         }
+{                                                                              }
+{ The original files are : SDL_image.h                                         }
+{                                                                              }
+{ The initial developer of this Pascal code was :                              }
+{ Matthias Thoma <ma.thoma@gmx.de>                                             }
+{                                                                              }
+{ Portions created by Matthias Thoma are                                       }
+{ Copyright (C) 2000 - 2001 Matthias Thoma.                                    }
+{                                                                              }
+{                                                                              }
+{ Contributor(s)                                                               }
+{ --------------                                                               }
+{ Dominique Louis <Dominique@SavageSoftware.com.au>                            }
+{                                                                              }
+{ Obtained through:                                                            }
+{ Joint Endeavour of Delphi Innovators ( Project JEDI )                        }
+{                                                                              }
+{ You may retrieve the latest version of this file at the Project              }
+{ JEDI home page, located at http://delphi-jedi.org                            }
+{                                                                              }
+{ The contents of this file are used with permission, subject to               }
+{ the Mozilla Public License Version 1.1 (the "License"); you may              }
+{ not use this file except in compliance with the License. You may             }
+{ obtain a copy of the License at                                              }
+{ http://www.mozilla.org/MPL/MPL-1.1.html                                      }
+{                                                                              }
+{ Software distributed under the License is distributed on an                  }
+{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or               }
+{ implied. See the License for the specific language governing                 }
+{ rights and limitations under the License.                                    }
+{                                                                              }
+{ Description                                                                  }
+{ -----------                                                                  }
+{   A simple library to load images of various formats as SDL surfaces         }
+{                                                                              }
+{ Requires                                                                     }
+{ --------                                                                     }
+{   SDL.pas in your search path.                                               }
+{                                                                              }
+{ Programming Notes                                                            }
+{ -----------------                                                            }
+{   See the Aliens Demo on how to make use of this libaray                     }
+{                                                                              }
+{ Revision History                                                             }
+{ ----------------                                                             }
+{   April    02 2001 - MT : Initial Translation                                }
+{                                                                              }
+{   May      08 2001 - DL : Added ExternalSym derectives and copyright header  }
+{                                                                              }
+{   April   03 2003 - DL : Added jedi-sdl.inc include file to support more     }
+{                          Pascal compilers. Initial support is now included   }
+{                          for GnuPascal, VirtualPascal, TMT and obviously     }
+{                          continue support for Delphi Kylix and FreePascal.   }
+{                                                                              }
+{   April   08 2003 - MK : Aka Mr Kroket - Added Better FPC support            }
+{                                                                              }
+{   April   24 2003 - DL : under instruction from Alexey Barkovoy, I have added}
+{                          better TMT Pascal support and under instruction     }
+{                          from Prof. Abimbola Olowofoyeku (The African Chief),}
+{                          I have added better Gnu Pascal support              }
+{                                                                              }
+{   April   30 2003 - DL : under instruction from David Mears AKA              }
+{                          Jason Siletto, I have added FPC Linux support.      }
+{                          This was compiled with fpc 1.1, so remember to set  }
+{                          include file path. ie. -Fi/usr/share/fpcsrc/rtl/*   }
+{                                                                              }
+{
+  $Log: sdl_image.pas,v $
+  Revision 1.15  2007/12/05 22:52:23  savage
+  Better Mac OS X support for Frameworks.
+
+  Revision 1.14  2007/05/29 21:31:13  savage
+  Changes as suggested by Almindor for 64bit compatibility.
+
+  Revision 1.13  2007/05/20 20:30:54  savage
+  Initial Changes to Handle 64 Bits
+
+  Revision 1.12  2006/12/02 00:14:40  savage
+  Updated to latest version
+
+  Revision 1.11  2005/04/10 18:22:59  savage
+  Changes as suggested by Michalis, thanks.
+
+  Revision 1.10  2005/04/10 11:48:33  savage
+  Changes as suggested by Michalis, thanks.
+
+  Revision 1.9  2005/01/05 01:47:07  savage
+  Changed LibName to reflect what MacOS X should have. ie libSDL*-1.2.0.dylib respectively.
+
+  Revision 1.8  2005/01/04 23:14:44  savage
+  Changed LibName to reflect what most Linux distros will have. ie libSDL*-1.2.so.0 respectively.
+
+  Revision 1.7  2005/01/01 02:03:12  savage
+  Updated to v1.2.4
+
+  Revision 1.6  2004/08/14 22:54:30  savage
+  Updated so that Library name defines are correctly defined for MacOS X.
+
+  Revision 1.5  2004/05/10 14:10:04  savage
+  Initial MacOS X support. Fixed defines for MACOS ( Classic ) and DARWIN ( MacOS X ).
+
+  Revision 1.4  2004/04/13 09:32:08  savage
+  Changed Shared object names back to just the .so extension to avoid conflicts on various Linux/Unix distros. Therefore developers will need to create Symbolic links to the actual Share Objects if necessary.
+
+  Revision 1.3  2004/04/01 20:53:23  savage
+  Changed Linux Shared Object names so they reflect the Symbolic Links that are created when installing the RPMs from the SDL site.
+
+  Revision 1.2  2004/03/30 20:23:28  savage
+  Tidied up use of UNIX compiler directive.
+
+  Revision 1.1  2004/02/14 23:35:42  savage
+  version 1 of sdl_image, sdl_mixer and smpeg.
+
+
+}  
+{******************************************************************************}
+
+{$I jedi-sdl.inc}
+
+interface
+
+uses
+{$IFDEF __GPC__}
+  gpc,
+{$ENDIF}
+  sdl;
+
+const
+{$IFDEF WINDOWS}
+  SDL_ImageLibName =  'SDL_Image.dll';
+{$ENDIF}
+
+{$IFDEF UNIX}
+{$IFDEF DARWIN}
+  SDL_ImageLibName = 'libSDL_image-1.2.0.dylib';
+  {$linklib libSDL_image}
+{$ELSE}
+  {$IFDEF FPC}
+    SDL_ImageLibName = 'libSDL_image.so';
+  {$ELSE}
+    SDL_ImageLibName = 'libSDL_image-1.2.so.0';
+  {$ENDIF}
+{$ENDIF}
+{$ENDIF}
+
+{$IFDEF MACOS}
+  SDL_ImageLibName = 'SDL_image';
+  {$linklib libSDL_image}
+{$ENDIF}
+
+  // Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
+  SDL_IMAGE_MAJOR_VERSION = 1;
+{$EXTERNALSYM SDL_IMAGE_MAJOR_VERSION}
+  SDL_IMAGE_MINOR_VERSION = 2;
+{$EXTERNALSYM SDL_IMAGE_MINOR_VERSION}
+  SDL_IMAGE_PATCHLEVEL    = 6;
+{$EXTERNALSYM SDL_IMAGE_PATCHLEVEL}
+
+{ This macro can be used to fill a version structure with the compile-time
+  version of the SDL_image library. }
+procedure SDL_IMAGE_VERSION( var X : TSDL_Version );
+{$EXTERNALSYM SDL_IMAGE_VERSION}
+
+{ This function gets the version of the dynamically linked SDL_image library.
+   it should NOT be used to fill a version structure, instead you should
+   use the SDL_IMAGE_VERSION() macro.
+ }
+function IMG_Linked_Version : PSDL_version;
+external {$IFDEF __GPC__}name 'IMG_Linked_Version'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_Linked_Version}
+
+{ Load an image from an SDL data source.
+   The 'type' may be one of: "BMP", "GIF", "PNG", etc.
+
+   If the image format supports a transparent pixel, SDL will set the
+   colorkey for the surface.  You can enable RLE acceleration on the
+   surface afterwards by calling:
+        SDL_SetColorKey(image, SDL_RLEACCEL, image.format.colorkey);
+}
+function IMG_LoadTyped_RW(src: PSDL_RWops; freesrc: Integer; _type: PChar): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadTyped_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadTyped_RW}
+{ Convenience functions }
+function IMG_Load(const _file: PChar): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_Load'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_Load}
+function IMG_Load_RW(src: PSDL_RWops; freesrc: Integer): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_Load_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_Load_RW}
+
+{ Invert the alpha of a surface for use with OpenGL
+  This function is now a no-op, and only provided for backwards compatibility. }
+function IMG_InvertAlpha(_on: Integer): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_InvertAlpha'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_InvertAlpha}
+
+{ Functions to detect a file type, given a seekable source }
+function IMG_isBMP(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isBMP'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isBMP}
+
+function IMG_isGIF(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isGIF'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isGIF}
+
+function IMG_isJPG(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isJPG'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isJPG}
+
+function IMG_isLBM(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isLBM'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isLBM}
+
+function IMG_isPCX(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isPCX'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isPCX}
+
+function IMG_isPNG(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isPNG'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isPNG}
+
+function IMG_isPNM(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isPNM'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isPNM}
+
+function IMG_isTIF(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isTIF'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isTIF}
+
+function IMG_isXCF(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isXCF'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isXCF}
+
+function IMG_isXPM(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isXPM'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isXPM}
+
+function IMG_isXV(src: PSDL_RWops): Integer;
+cdecl; external {$IFDEF __GPC__}name 'IMG_isXV'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_isXV}
+
+
+{ Individual loading functions }
+function IMG_LoadBMP_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadBMP_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadBMP_RW}
+
+function IMG_LoadGIF_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadGIF_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadGIF_RW}
+
+function IMG_LoadJPG_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadJPG_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadJPG_RW}
+
+function IMG_LoadLBM_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadLBM_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadLBM_RW}
+
+function IMG_LoadPCX_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadPCX_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadPCX_RW}
+
+function IMG_LoadPNM_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadPNM_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadPNM_RW}
+
+function IMG_LoadPNG_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadPNG_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadPNG_RW}
+
+function IMG_LoadTGA_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadTGA_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadTGA_RW}
+
+function IMG_LoadTIF_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadTIF_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadTIF_RW}
+
+function IMG_LoadXCF_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadXCF_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadXCF_RW}
+
+function IMG_LoadXPM_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadXPM_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadXPM_RW}
+
+function IMG_LoadXV_RW(src: PSDL_RWops): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_LoadXV_RW'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_LoadXV_RW}
+
+function IMG_ReadXPMFromArray( xpm : PPChar ): PSDL_Surface;
+cdecl; external {$IFDEF __GPC__}name 'IMG_ReadXPMFromArray'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+{$EXTERNALSYM IMG_ReadXPMFromArray}
+
+
+
+
+{ used internally, NOT an exported function }
+//function IMG_string_equals( const str1 : PChar; const str2 : PChar ) : integer;
+//cdecl; external {$IFDEF __GPC__}name 'IMG_string_equals'{$ELSE} SDL_ImageLibName{$ENDIF __GPC__};
+//{ $ EXTERNALSYM IMG_string_equals}
+
+{ Error Macros }
+{ We'll use SDL for reporting errors }
+procedure IMG_SetError( fmt : PChar );
+
+function IMG_GetError : PChar;
+
+implementation
+
+{$IFDEF __GPC__}
+  {$L 'sdl_image'}  { link sdl_image.dll.a or libsdl_image.so or libsdl_image.a }
+{$ENDIF}
+
+procedure SDL_IMAGE_VERSION( var X : TSDL_Version );
+begin
+  X.major := SDL_IMAGE_MAJOR_VERSION;
+  X.minor := SDL_IMAGE_MINOR_VERSION;
+  X.patch := SDL_IMAGE_PATCHLEVEL;
+end;
+
+procedure IMG_SetError( fmt : PChar );
+begin
+  SDL_SetError( fmt );
+end;
+
+function IMG_GetError : PChar;
+begin
+  result := SDL_GetError;
+end;
+
+end.
diff --git a/src/lib/JEDI-SDL/fpc-install.sh b/src/lib/JEDI-SDL/fpc-install.sh
new file mode 100644
index 00000000..b7a5cf69
--- /dev/null
+++ b/src/lib/JEDI-SDL/fpc-install.sh
@@ -0,0 +1,252 @@
+#!/bin/sh
+#
+# FreePascal & Delphi Installation script for JEDI-SDL
+# portions of which are based on the FreePascal install script
+# Copyright 1996-2002 Michael Van Canneyt and Peter Vreman
+#   
+# Copyright (c)2004-2100, JEDI-SDL Team
+# All Rights Reserved
+#
+# Don NOT edit this file. 
+# Everything should be configuration while the script is running.
+#
+############################################################################
+
+# Release Version
+VERSION=1.0
+
+# some useful functions
+# ask displays 1st parameter, and ask new value for variable, whose name is
+# in the second parameter.
+ask ()
+{
+askvar=$2
+eval old=\$$askvar
+eval echo -n \""$1 [$old] : "\" 
+read $askvar
+eval test -z \"\$$askvar\" && eval $askvar=\'$old\'
+}
+# yesno gives 1 on no, 0 on yes $1 gives text to display.
+yesno ()
+{
+  while true; do
+  echo -n "$1 (Y/n) ? "
+  read ans
+  case X$ans in
+   X|Xy|XY) return 0;;
+   Xn|XN) return 1;;
+  esac
+  done
+}
+
+# Untar files ($3,optional) from  file ($1) to the given directory ($2)
+unztar ()
+{
+ tar -xzf $HERE/$1 --directory $2 $3
+}
+
+# Untar tar.gz file ($2) from file ($1) and untar result to the given directory ($3)
+unztarfromtar ()
+{
+ tar -xOf $HERE/$1 $2 | tar --directory $3 -xzf -
+}
+# Get file list from tar archive ($1) in variable ($2)
+# optionally filter result through sed ($3)
+listtarfiles ()
+{
+  askvar=$2
+  if [ ! -z $3 ]; then
+    list=`tar tvf $1 | awk '{ print $(NF) }' | sed -n /$3/p`
+  else
+     list=`tar tvf $1 | awk '{ print $(NF) }'`
+  fi
+  eval $askvar='$list'
+}
+# Make all the necessary directories to get $1
+makedirhierarch ()
+{
+  OLDDIR=`pwd`
+  case $1 in
+    /*) cd /;;
+  esac
+  OLDIFS=$IFS;IFS=/;eval set $1; IFS=$OLDIFS
+  for i
+  do
+    test -d $i || mkdir $i || break
+    cd $i ||break
+  done
+  cd $OLDDIR
+}
+
+# check to see if something is in the path
+checkpath ()
+{
+ ARG=$1
+ OLDIFS=$IFS; IFS=":";eval set $PATH;IFS=$OLDIFS
+ for i
+ do
+   if [ $i = $ARG ]; then
+     return 0
+   fi
+ done 
+ return 1
+}
+
+# --------------------------------------------------------------------------
+# welcome message.
+#
+
+clear
+echo "This shell script will attempt to install the Free Pascal Compiler"
+echo "version $VERSION with the items you select"
+echo 
+
+# Here we start the thing.
+HERE=`pwd`
+
+# Install in /usr/local or /usr ?
+if checkpath /usr/local/bin; then
+    PREFIX=/usr/local
+else
+    PREFIX=/usr
+fi
+# If we can't write on prefix, select subdir of home dir
+if [ ! -w $PREFIX ]; then
+  PREFIX=$HOME/JEDI-SDLv$VERSION
+fi
+ask "Install prefix (/usr or /usr/local) " PREFIX
+makedirhierarch $PREFIX
+
+# Set some defaults.
+LIBDIR=$PREFIX/lib/JEDI-SDL/$VERSION
+SRCDIR=$PREFIX/src/JEDI-SDLv$VERSION
+EXECDIR=$PREFIX/bin
+OSNAME=`uname -s | tr A-Z a-z`
+
+BSDHIER=0
+case $OSNAME in 
+*bsd)
+  BSDHIER=1;;
+esac
+
+
+if [ "${BSDHIER}" = "1" ]; then
+DOCDIR=$PREFIX/share/doc/JEDI-SDLv$VERSION
+else
+DOCDIR=$PREFIX/doc/JEDI-SDLv$VERSION
+fi
+
+echo $DOCDIR
+
+DEMODIR=$PREFIX/demos
+
+# Install SDL headers
+if yesno "Install SDL headers"; then
+  
+fi
+
+# Install SDL_image headers
+if yesno "Install SDL_image headers"; then
+  
+fi
+
+# Install compiler/RTL. Mandatory.
+echo Installing compiler and RTL ...
+unztarfromtar binary.tar base${OSNAME}.tar.gz $PREFIX
+rm -f $EXECDIR/ppc386
+ln -sf $LIBDIR/ppc386 $EXECDIR/ppc386
+echo Installing utilities...
+unztarfromtar binary.tar util${OSNAME}.tar.gz $PREFIX
+if yesno "Install FCL"; then
+    unztarfromtar binary.tar unitsfcl${OSNAME}.tar.gz $PREFIX
+fi
+if yesno "Install packages"; then
+  listtarfiles binary.tar packages units
+  for f in $packages 
+  do
+    if [ $f != unitsfcl${OSNAME}.tar.gz ]; then
+      basename $f .tar.gz |\
+      sed -e s/units// -e s/${OSNAME}// |\
+      xargs echo Installing 
+      unztarfromtar binary.tar $f $PREFIX
+    fi
+  done
+fi
+rm -f *${OSNAME}.tar.gz
+echo Done.
+echo
+
+# Install the sources. Optional.
+if yesno "Install sources"; then
+  echo Installing sources in $SRCDIR ...
+  unztarfromtar sources.tar  basesrc.tar.gz $PREFIX
+  if yesno "Install compiler source"; then
+    unztarfromtar sources.tar compilersrc.tar.gz $PREFIX
+  fi    
+  if yesno "Install RTL source"; then
+    unztarfromtar sources.tar rtlsrc.tar.gz $PREFIX
+  fi    
+  if yesno "Install FCL source"; then
+    unztarfromtar sources.tar fclsrc.tar.gz $PREFIX
+  fi    
+  if yesno "Install IDE source"; then
+    unztarfromtar sources.tar idesrc.tar.gz $PREFIX
+  fi    
+  if yesno "Install installer source"; then
+    unztarfromtar sources.tar installersrc.tar.gz $PREFIX
+  fi    
+  if yesno "Install Packages source"; then
+    listtarfiles sources.tar packages units
+    for f in $packages
+    do
+      basename $f .tar.gz |\
+      sed -e s/units// -e s/src// |\
+      xargs echo Installing sources for 
+      unztarfromtar sources.tar $f $PREFIX
+    done
+  fi    
+  # rm -f *src.tar.gz
+  echo Done.
+fi
+echo
+
+# Install the documentation. Optional.
+if yesno "Install documentation"; then
+  echo Installing documentation in $DOCDIR ...
+  unztar docs.tar.gz $DOCDIR
+  echo Done.
+fi
+echo
+
+# Install the demos. Optional.
+if yesno "Install demos"; then
+  ask "Install demos in" DEMODIR
+  echo Installing demos in $DEMODIR ...
+  makedirhierarch $DEMODIR
+  unztar demo.tar.gz $DEMODIR
+  echo Done.
+fi
+echo
+
+# update fpc.cfg file
+if yesno "Update fpc.cfg file automagically"; then
+  echo Updating fpc.cfg in $DOCDIR ...
+  echo 
+  echo Done.
+fi
+
+# update Borland IDE file
+if yesno "Update the Kylix IDE automagically"; then
+  echo Updating the Kylix IDE in $DOCDIR ...
+  echo 
+  echo Done.
+fi
+
+$LIBDIR/samplecfg $LIBDIR
+
+# The End
+echo
+echo End of installation. 
+echo
+echo Refer to the documentation for more information.
+echo
\ No newline at end of file
diff --git a/src/lib/JEDI-SDL/jedi-sdl-64bit.patch b/src/lib/JEDI-SDL/jedi-sdl-64bit.patch
new file mode 100644
index 00000000..582ebe6a
--- /dev/null
+++ b/src/lib/JEDI-SDL/jedi-sdl-64bit.patch
@@ -0,0 +1,1280 @@
+cvs diff: Diffing .
+cvs diff: Diffing Cal3D
+cvs diff: Diffing Cal3D/Demos
+cvs diff: Diffing Cal3D/Demos/DCally
+cvs diff: Diffing Cal3D/Demos/DCally/data
+cvs diff: Diffing Cal3D/Demos/DCally/data/cally
+cvs diff: Diffing Cal3D/Pas
+cvs diff: Diffing Demos
+cvs diff: Diffing Demos/2D
+cvs diff: Diffing Demos/2D/Aliens
+cvs diff: Diffing Demos/2D/Aliens/data
+cvs diff: Diffing Demos/2D/BlitzBomber
+cvs diff: Diffing Demos/2D/BlitzBomber/images
+cvs diff: Diffing Demos/2D/CustomCursors
+cvs diff: Diffing Demos/2D/CustomCursors/cursors
+cvs diff: Diffing Demos/2D/CustomCursors/images
+cvs diff: Diffing Demos/2D/Fading
+cvs diff: Diffing Demos/2D/Fading/images
+cvs diff: Diffing Demos/2D/Isometric
+cvs diff: Diffing Demos/2D/Isometric/images
+cvs diff: Diffing Demos/2D/Isometric/maps
+cvs diff: Diffing Demos/2D/Mouse
+cvs diff: Diffing Demos/2D/Mouse/images
+cvs diff: Diffing Demos/2D/PanAndZoom
+cvs diff: Diffing Demos/2D/Plasma
+Index: Demos/2D/Plasma/JEDISDLPlasma.dpr
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/Demos/2D/Plasma/JEDISDLPlasma.dpr,v
+retrieving revision 1.1
+diff -u -r1.1 JEDISDLPlasma.dpr
+--- Demos/2D/Plasma/JEDISDLPlasma.dpr	30 Sep 2006 17:20:08 -0000	1.1
++++ Demos/2D/Plasma/JEDISDLPlasma.dpr	27 Feb 2008 09:15:58 -0000
+@@ -107,13 +107,13 @@
+   X3_ := trunc(x3 * (TABLEX / 2));
+   Y3_ := trunc(y3 * (TABLEY / 2));
+ 
+-  t1 := Pointer(Integer(t) + X1_ + Y1_ * TABLEX);
+-  t2 := Pointer(Integer(t) + X2_ + Y2_ * TABLEX);
+-  t3 := Pointer(Integer(t) + X3_ + Y3_ * TABLEX);
++  t1 := Pointer(PtrInt(t) + X1_ + Y1_ * TABLEX);
++  t2 := Pointer(PtrInt(t) + X2_ + Y2_ * TABLEX);
++  t3 := Pointer(PtrInt(t) + X3_ + Y3_ * TABLEX);
+ 
+   for y := 0 to SCREEN_HEIGHT - 1  do
+   begin
+-    tmp :=  PByte(Integer(surface.pixels) + y * surface.pitch);
++    tmp :=  PByte(PtrInt(surface.pixels) + y * surface.pitch);
+ 
+     tmin := y * TABLEX;
+     tmax := tmin + SCREEN_WIDTH;
+cvs diff: Diffing Demos/2D/SDLTests
+cvs diff: Diffing Demos/2D/SDLTests/images
+cvs diff: Diffing Demos/2D/SDLTests/testalpha
+Index: Demos/2D/SDLTests/testalpha/testalpha.dpr
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/Demos/2D/SDLTests/testalpha/testalpha.dpr,v
+retrieving revision 1.1
+diff -u -r1.1 testalpha.dpr
+--- Demos/2D/SDLTests/testalpha/testalpha.dpr	30 Sep 2006 17:20:08 -0000	1.1
++++ Demos/2D/SDLTests/testalpha/testalpha.dpr	27 Feb 2008 09:15:59 -0000
+@@ -371,7 +371,6 @@
+   ticks, lastticks : Uint32;
+   clip, area : TSDL_Rect;
+ begin
+-
+   (* Initialize SDL *)
+   if ( SDL_Init( SDL_INIT_VIDEO ) < 0 ) then
+   begin
+@@ -392,11 +391,13 @@
+   end;
+ 
+   videoflags := SDL_SWSURFACE;
+-  for i := 0 to ParamCount - 1 do
++  i := 1;
++  while i <= ParamCount do
+   begin
+     if ( ParamStr( i ) = '-bpp' ) then
+     begin
+-      video_bpp := StrToInt( ParamStr( i + 1 ) );
++      Inc(i);
++      video_bpp := StrToInt( ParamStr( i ) );
+     end
+     else if ( ParamStr( i ) = '-hw' ) then
+     begin
+@@ -416,7 +417,9 @@
+         'MAIN' );
+       halt( 1 );
+     end;
++    Inc(i);
+   end;
++
+   (* Set 640 x 480 video mode *)
+   screen := SDL_SetVideoMode( 640, 480, video_bpp, videoflags );
+   if ( Screen = nil ) then
+@@ -442,7 +445,7 @@
+   buffer := PUint8( screen.pixels );
+   for i := 0 to screen.h - 1 do
+   begin
+-    FillChar( buffer, Screen.pitch, ( i * 255 ) div screen.h );
++    FillChar( buffer^, Screen.pitch, ( i * 255 ) div screen.h );
+     //memset(buffer, (i * 255) div screen.h , screen.pitch);
+     Inc( buffer, screen.pitch );
+   end;
+@@ -469,7 +472,7 @@
+   clip.w := screen.w - ( 2 * 32 );
+   clip.h := screen.h - ( 2 * 32 );
+   SDL_SetClipRect( screen, @clip );
+-
++  
+   (* Wait for a keystroke *)
+   lastticks := SDL_GetTicks;
+   done := False;
+cvs diff: Diffing Demos/2D/SDLTests/testgamma
+cvs diff: Diffing Demos/2D/SDLTests/testjoystick
+cvs diff: Diffing Demos/2D/SDLTests/testwin
+cvs diff: Diffing Demos/2D/SDLUtilsTests
+cvs diff: Diffing Demos/2D/SDLUtilsTests/MainTest
+cvs diff: Diffing Demos/2D/SDLUtilsTests/MainTest/images
+cvs diff: Diffing Demos/2D/SDLUtilsTests/PixelTest
+cvs diff: Diffing Demos/2D/SDLUtilsTests/PixelTest/images
+cvs diff: Diffing Demos/2D/SDLUtilsTests/RotateSurface
+cvs diff: Diffing Demos/2D/SDLUtilsTests/RotateSurface/images
+cvs diff: Diffing Demos/2D/SDLUtilsTests/WormHole
+cvs diff: Diffing Demos/2D/TimerTest
+cvs diff: Diffing Demos/2D/Voxel
+Index: Demos/2D/Voxel/JEDISDLNewVox.dpr
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/Demos/2D/Voxel/JEDISDLNewVox.dpr,v
+retrieving revision 1.2
+diff -u -r1.2 JEDISDLNewVox.dpr
+--- Demos/2D/Voxel/JEDISDLNewVox.dpr	29 May 2007 21:44:24 -0000	1.2
++++ Demos/2D/Voxel/JEDISDLNewVox.dpr	27 Feb 2008 09:16:00 -0000
+@@ -246,7 +246,7 @@
+     // Draw the column  from a (last height) to y (current height)
+     if ( y < a ) then
+     begin
+-      b1 := PByte(Integer(@Video[0]) + a * SCREEN_WIDTH + i);
++      b1 := PByte(PtrInt(@Video[0]) + a * SCREEN_WIDTH + i);
+ 
+       if lastc[i] = -1 then
+       	lastc[i] := c;
+cvs diff: Diffing Demos/2D/YuvPlayer
+cvs diff: Diffing Demos/3D
+cvs diff: Diffing Demos/3D/BasicShader
+cvs diff: Diffing Demos/3D/NeHe
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 10
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 10/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 10/levels
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 11
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 11/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 12
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 12/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 13
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 13/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 16
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 16/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 17
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 17/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 18
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 18/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 19
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 19/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 2
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 20
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 20/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 21
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 21/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 21/sound
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 3
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 37
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 4
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 5
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 6
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 6/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 7
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 7/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 8
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 8/images
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 9
+cvs diff: Diffing Demos/3D/NeHe/Tutorial 9/images
+cvs diff: Diffing Documentation
+cvs diff: Diffing Documentation/HLP
+cvs diff: Diffing Documentation/html
+cvs diff: Diffing Documentation/html/images
+cvs diff: Diffing HawkVoice
+cvs diff: Diffing HawkVoice/Demos
+cvs diff: Diffing HawkVoice/Pas
+cvs diff: Diffing Newton
+cvs diff: Diffing Newton/Demos
+cvs diff: Diffing Newton/Demos/SDLBasic
+cvs diff: Diffing Newton/Demos/SDLBuoyancy
+cvs diff: Diffing Newton/Demos/SDLCharacterController
+cvs diff: Diffing Newton/Demos/SDLCharacterController/data
+cvs diff: Diffing Newton/Demos/SDLJoints
+cvs diff: Diffing Newton/Demos/SDLRagDoll
+cvs diff: Diffing Newton/Demos/SDLVehicle
+cvs diff: Diffing Newton/Demos/Tutorial 1
+cvs diff: Diffing Newton/Demos/Tutorial 1/images
+cvs diff: Diffing Newton/Demos/common
+cvs diff: Diffing Newton/Pas
+cvs diff: Diffing ODE
+cvs diff: Diffing ODE/Demos
+cvs diff: Diffing ODE/Demos/RagDoll
+Index: ODE/Demos/RagDoll/JEDISDLRagDoll.dpr
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/ODE/Demos/RagDoll/JEDISDLRagDoll.dpr,v
+retrieving revision 1.3
+diff -u -r1.3 JEDISDLRagDoll.dpr
+--- ODE/Demos/RagDoll/JEDISDLRagDoll.dpr	20 May 2007 20:27:45 -0000	1.3
++++ ODE/Demos/RagDoll/JEDISDLRagDoll.dpr	27 Feb 2008 09:16:11 -0000
+@@ -83,8 +83,7 @@
+   glext,
+   logger,
+   sdl,
+-  odeimport,
+-  ragdoll;
++  odeimport;
+ 
+ const
+   // screen width, height, and bit depth
+cvs diff: Diffing ODE/Demos/TruckOff
+cvs diff: Diffing ODE/Demos/TruckOff/images
+cvs diff: Diffing ODE/Pas
+cvs diff: Diffing OpenGL
+cvs diff: Diffing OpenGL/Pas
+cvs diff: Diffing PixelPrachtFX
+cvs diff: Diffing PixelPrachtFX/Demo
+Index: PixelPrachtFX/Demo/Textures.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/PixelPrachtFX/Demo/Textures.pas,v
+retrieving revision 1.2
+diff -u -r1.2 Textures.pas
+--- PixelPrachtFX/Demo/Textures.pas	20 Dec 2005 20:26:54 -0000	1.2
++++ PixelPrachtFX/Demo/Textures.pas	27 Feb 2008 09:16:11 -0000
+@@ -33,25 +33,6 @@
+ implementation
+ 
+ {------------------------------------------------------------------}
+-{  Swap bitmap format from BGR to RGB                              }
+-{------------------------------------------------------------------}
+-procedure SwapRGB(data : Pointer; Size : Integer);
+-asm
+-  mov ebx, eax
+-  mov ecx, size
+-
+-@@loop :
+-  mov al,[ebx+0]
+-  mov ah,[ebx+2]
+-  mov [ebx+2],al
+-  mov [ebx+0],ah
+-  add ebx,3
+-  dec ecx
+-  jnz @@loop
+-end;
+-
+-
+-{------------------------------------------------------------------}
+ {  Create the Texture                                              }
+ {------------------------------------------------------------------}
+ function CreateTexture(Width, Height, Format : Word; pData : Pointer) : Integer;
+Index: PixelPrachtFX/Demo/fxBurn.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/PixelPrachtFX/Demo/fxBurn.pas,v
+retrieving revision 1.1
+diff -u -r1.1 fxBurn.pas
+--- PixelPrachtFX/Demo/fxBurn.pas	5 Dec 2005 01:09:29 -0000	1.1
++++ PixelPrachtFX/Demo/fxBurn.pas	27 Feb 2008 09:16:11 -0000
+@@ -2,7 +2,7 @@
+ 
+ interface
+ 
+-uses ppFXcore, ppFXlib, textures, gl;
++uses ppFXcore, ppFXlib, Textures, gl;
+ 
+ type
+ 
+cvs diff: Diffing PixelPrachtFX/Demo/gfx
+cvs diff: Diffing PixelPrachtFX/Pas
+cvs diff: Diffing SDL
+cvs diff: Diffing SDL/Pas
+Index: SDL/Pas/sdl.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/SDL/Pas/sdl.pas,v
+retrieving revision 1.38
+diff -u -r1.38 sdl.pas
+--- SDL/Pas/sdl.pas	26 Jan 2008 10:09:32 -0000	1.38
++++ SDL/Pas/sdl.pas	27 Feb 2008 09:16:11 -0000
+@@ -355,6 +355,12 @@
+   GPCMacOSAll;
+ {$ENDIF}
+ 
++{$ifndef FPC}
++type
++  PtrInt = LongInt;
++  PtrUInt = LongWord;
++{$endif}
++
+ const
+ {$IFDEF WINDOWS}
+   SDLLibName = 'SDL.dll';
+Index: SDL/Pas/sdlutils.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas,v
+retrieving revision 1.5
+diff -u -r1.5 sdlutils.pas
+--- SDL/Pas/sdlutils.pas	19 Nov 2006 18:56:44 -0000	1.5
++++ SDL/Pas/sdlutils.pas	27 Feb 2008 09:16:12 -0000
+@@ -260,7 +260,7 @@
+   right2, bottom2 : integer;
+   Scan1Start, Scan2Start, ScanWidth, ScanHeight : cardinal;
+   Mod1, Mod2   : cardinal;
+-  Addr1, Addr2 : cardinal;
++  Addr1, Addr2 : PtrUInt;
+   BPP          : cardinal;
+   Pitch1, Pitch2 : cardinal;
+   TransparentColor1, TransparentColor2 : cardinal;
+@@ -329,7 +329,7 @@
+   with SrcSurface1^ do
+   begin
+     Pitch1 := Pitch;
+-    Addr1 := cardinal( Pixels );
++    Addr1 := PtrUInt( Pixels );
+     inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+     with format^ do
+     begin
+@@ -341,7 +341,7 @@
+   begin
+     TransparentColor2 := format.colorkey;
+     Pitch2 := Pitch;
+-    Addr2 := cardinal( Pixels );
++    Addr2 := PtrUInt( Pixels );
+     inc( Addr2, Pitch2 * UInt32( Src_Rect2.y ) );
+   end;
+   Mod1 := Pitch1 - ( ScanWidth * BPP );
+@@ -442,14 +442,14 @@
+   cardinal );
+ var
+   SrcColor     : cardinal;
+-  Addr         : cardinal;
++  Addr         : PtrUInt;
+   R, G, B      : cardinal;
+ begin
+   if Color = 0 then
+     exit;
+   with DstSurface^ do
+   begin
+-    Addr := cardinal( Pixels ) + y * Pitch + x * format.BytesPerPixel;
++    Addr := PtrUInt( Pixels ) + y * Pitch + x * format.BytesPerPixel;
+     SrcColor := PUInt32( Addr )^;
+     case format.BitsPerPixel of
+       8 :
+@@ -525,14 +525,14 @@
+   cardinal );
+ var
+   SrcColor     : cardinal;
+-  Addr         : cardinal;
++  Addr         : PtrUInt;
+   R, G, B      : cardinal;
+ begin
+   if Color = 0 then
+     exit;
+   with DstSurface^ do
+   begin
+-    Addr := cardinal( Pixels ) + y * Pitch + x * format.BytesPerPixel;
++    Addr := PtrUInt( Pixels ) + y * Pitch + x * format.BytesPerPixel;
+     SrcColor := PUInt32( Addr )^;
+     case format.BitsPerPixel of
+       8 :
+@@ -613,7 +613,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+   Bits         : cardinal;
+@@ -686,14 +686,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := Format.BitsPerPixel;
+@@ -883,7 +883,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   _ebx, _esi, _edi, _esp : cardinal;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+@@ -957,14 +957,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := DestSurface.Format.BitsPerPixel;
+@@ -1145,7 +1145,7 @@
+ var
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   _ebx, _esi, _edi, _esp : cardinal;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+@@ -1220,14 +1220,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     BPP := DestSurface.Format.BytesPerPixel;
+@@ -1317,7 +1317,7 @@
+ var
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr, TextAddr : cardinal;
++  SrcAddr, DestAddr, TextAddr : PtrUInt;
+   _ebx, _esi, _edi, _esp : cardinal;
+   WorkX, WorkY : word;
+   SrcMod, DestMod, TextMod : cardinal;
+@@ -1392,21 +1392,21 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     BPP := DestSurface.Format.BitsPerPixel;
+   end;
+   with Texture^ do
+   begin
+-    TextAddr := cardinal( Pixels ) + UInt32( TextureRect.y ) * Pitch +
++    TextAddr := PtrUInt( Pixels ) + UInt32( TextureRect.y ) * Pitch +
+       UInt32( TextureRect.x ) * Format.BytesPerPixel;
+     TextMod := Pitch - Src.w * Format.BytesPerPixel;
+   end;
+@@ -1910,17 +1910,17 @@
+     end
+     else
+       Locked := false;
+-    Row1 := pointer( cardinal( DstSurface^.Pixels ) + UInt32( Rect^.y ) *
++    Row1 := pointer( PtrUInt( DstSurface^.Pixels ) + UInt32( Rect^.y ) *
+       DstSurface^.Pitch );
+-    Row2 := pointer( cardinal( DstSurface^.Pixels ) + ( UInt32( Rect^.y ) + Rect^.h - 1 )
++    Row2 := pointer( PtrUInt( DstSurface^.Pixels ) + ( UInt32( Rect^.y ) + Rect^.h - 1 )
+       * DstSurface^.Pitch );
+     for y := 0 to FlipLength do
+     begin
+       Move( Row1^, OneRow, RowLength );
+       Move( Row2^, Row1^, RowLength );
+       Move( OneRow, Row2^, RowLength );
+-      inc( cardinal( Row1 ), DstSurface^.Pitch );
+-      dec( cardinal( Row2 ), DstSurface^.Pitch );
++      inc( PtrUInt( Row1 ), DstSurface^.Pitch );
++      dec( PtrUInt( Row2 ), DstSurface^.Pitch );
+     end;
+     if Locked then
+       SDL_UnlockSurface( DstSurface );
+@@ -1965,7 +1965,7 @@
+     case DstSurface^.format.BytesPerPixel of
+       1 :
+         begin
+-          Row8Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
++          Row8Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+             DstSurface^.pitch );
+           for y := 1 to Rect^.h do
+           begin
+@@ -1977,12 +1977,12 @@
+               Row8Bit^[ RightSide ] := Pixel;
+               dec( RightSide );
+             end;
+-            inc( cardinal( Row8Bit ), DstSurface^.pitch );
++            inc( PtrUInt( Row8Bit ), DstSurface^.pitch );
+           end;
+         end;
+       2 :
+         begin
+-          Row16Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
++          Row16Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+             DstSurface^.pitch );
+           for y := 1 to Rect^.h do
+           begin
+@@ -1994,12 +1994,12 @@
+               Row16Bit^[ RightSide ] := Pixel;
+               dec( RightSide );
+             end;
+-            inc( cardinal( Row16Bit ), DstSurface^.pitch );
++            inc( PtrUInt( Row16Bit ), DstSurface^.pitch );
+           end;
+         end;
+       3 :
+         begin
+-          Row24Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
++          Row24Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+             DstSurface^.pitch );
+           for y := 1 to Rect^.h do
+           begin
+@@ -2011,12 +2011,12 @@
+               Row24Bit^[ RightSide ] := Pixel24;
+               dec( RightSide );
+             end;
+-            inc( cardinal( Row24Bit ), DstSurface^.pitch );
++            inc( PtrUInt( Row24Bit ), DstSurface^.pitch );
+           end;
+         end;
+       4 :
+         begin
+-          Row32Bit := pointer( cardinal( DstSurface^.pixels ) + UInt32( Rect^.y ) *
++          Row32Bit := pointer( PtrUInt( DstSurface^.pixels ) + UInt32( Rect^.y ) *
+             DstSurface^.pitch );
+           for y := 1 to Rect^.h do
+           begin
+@@ -2028,7 +2028,7 @@
+               Row32Bit^[ RightSide ] := Pixel;
+               dec( RightSide );
+             end;
+-            inc( cardinal( Row32Bit ), DstSurface^.pitch );
++            inc( PtrUInt( Row32Bit ), DstSurface^.pitch );
+           end;
+         end;
+     end;
+@@ -2088,8 +2088,8 @@
+   dx2 := dx shl 1;
+   src_pitch := Surface^.pitch;
+   dst_pitch := dst_surface^.pitch;
+-  src_pixels := PUint8( integer( Surface^.pixels ) + yr * src_pitch + y1 * depth );
+-  dst_pixels := PUint8( integer( dst_surface^.pixels ) + yw * dst_pitch + x1 *
++  src_pixels := PUint8( PtrUInt( Surface^.pixels ) + yr * src_pitch + y1 * depth );
++  dst_pixels := PUint8( PtrUInt( dst_surface^.pixels ) + yw * dst_pitch + x1 *
+     depth );
+   for d := 0 to dx - 1 do
+   begin
+@@ -2166,9 +2166,9 @@
+   src_pixels, dst_pixels : PUint8;
+   i            : integer;
+ begin
+-  src_pixels := PUint8( integer( Surface^.pixels ) + Surface^.w * y1 * depth + x2 *
++  src_pixels := PUint8( PtrUInt( Surface^.pixels ) + Surface^.w * y1 * depth + x2 *
+     depth );
+-  dst_pixels := PUint8( integer( Surface^.pixels ) + Surface^.w * y1 * depth + ( x2
++  dst_pixels := PUint8( PtrUInt( Surface^.pixels ) + Surface^.w * y1 * depth + ( x2
+     + xofs ) * depth );
+   for i := x2 downto x1 do
+   begin
+@@ -2187,7 +2187,7 @@
+ begin
+   bpp := SrcSurface.format.BytesPerPixel;
+   // Here p is the address to the pixel we want to retrieve
+-  p := Pointer( Uint32( SrcSurface.pixels ) + UInt32( y ) * SrcSurface.pitch + UInt32( x ) *
++  p := Pointer( PtrUInt( SrcSurface.pixels ) + UInt32( y ) * SrcSurface.pitch + UInt32( x ) *
+     bpp );
+   case bpp of
+     1 : result := PUint8( p )^;
+@@ -2214,7 +2214,7 @@
+   p            : PInteger;
+ begin
+   bpp := DstSurface.format.BytesPerPixel;
+-  p := Pointer( Uint32( DstSurface.pixels ) + UInt32( y ) * DstSurface.pitch + UInt32( x )
++  p := Pointer( PtrUInt( DstSurface.pixels ) + UInt32( y ) * DstSurface.pitch + UInt32( x )
+     * bpp );
+   case bpp of
+     1 : PUint8( p )^ := pixel;
+@@ -2480,7 +2480,7 @@
+     BPP := DstSurface.format.BytesPerPixel;
+     with DstSurface^ do
+     begin
+-      Addr := pointer( UInt32( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
++      Addr := pointer( PtrUInt( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+       ModX := Pitch - UInt32( RealRect.w ) * BPP;
+     end;
+     case DstSurface.format.BitsPerPixel of
+@@ -2501,9 +2501,9 @@
+               if B > $03 then
+                 B := $03;
+               PUInt8( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       15 :
+@@ -2523,9 +2523,9 @@
+               if B > $001F then
+                 B := $001F;
+               PUInt16( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       16 :
+@@ -2545,9 +2545,9 @@
+               if B > $001F then
+                 B := $001F;
+               PUInt16( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       24 :
+@@ -2567,9 +2567,9 @@
+               if B > $0000FF then
+                 B := $0000FF;
+               PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       32 :
+@@ -2589,9 +2589,9 @@
+               if B > $0000FF then
+                 B := $0000FF;
+               PUInt32( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+     end;
+@@ -2613,7 +2613,7 @@
+     BPP := DstSurface.format.BytesPerPixel;
+     with DstSurface^ do
+     begin
+-      Addr := pointer( UInt32( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
++      Addr := pointer( PtrUInt( pixels ) + UInt32( RealRect.y ) * pitch + UInt32( RealRect.x ) * BPP );
+       ModX := Pitch - UInt32( RealRect.w ) * BPP;
+     end;
+     case DstSurface.format.BitsPerPixel of
+@@ -2634,9 +2634,9 @@
+               if B > $03 then
+                 B := 0;
+               PUInt8( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       15 :
+@@ -2656,9 +2656,9 @@
+               if B > $001F then
+                 B := 0;
+               PUInt16( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       16 :
+@@ -2678,9 +2678,9 @@
+               if B > $001F then
+                 B := 0;
+               PUInt16( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       24 :
+@@ -2700,9 +2700,9 @@
+               if B > $0000FF then
+                 B := 0;
+               PUInt32( Addr )^ := SrcColor and $FF000000 or R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+       32 :
+@@ -2722,9 +2722,9 @@
+               if B > $0000FF then
+                 B := 0;
+               PUInt32( Addr )^ := R or G or B;
+-              inc( UInt32( Addr ), BPP );
++              inc( PtrUInt( Addr ), BPP );
+             end;
+-            inc( UInt32( Addr ), ModX );
++            inc( PtrUInt( Addr ), ModX );
+           end;
+         end;
+     end;
+@@ -2800,7 +2800,7 @@
+ 
+ procedure SDL_2xBlit( Src, Dest : PSDL_Surface );
+ var
+-  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
++  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+   SrcPitch, DestPitch, x, y : UInt32;
+ begin
+   if ( Src = nil ) or ( Dest = nil ) then
+@@ -2815,8 +2815,8 @@
+   if SDL_MustLock( Dest ) then
+     SDL_LockSurface( Dest );
+ 
+-  ReadRow := UInt32( Src.Pixels );
+-  WriteRow := UInt32( Dest.Pixels );
++  ReadRow := PtrUInt( Src.Pixels );
++  WriteRow := PtrUInt( Dest.Pixels );
+ 
+   SrcPitch := Src.pitch;
+   DestPitch := Dest.pitch;
+@@ -2835,8 +2835,8 @@
+           inc( ReadAddr );
+           inc( WriteAddr, 2 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     2 : for y := 1 to Src.h do
+       begin
+@@ -2851,8 +2851,8 @@
+           inc( ReadAddr, 2 );
+           inc( WriteAddr, 4 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     3 : for y := 1 to Src.h do
+       begin
+@@ -2867,8 +2867,8 @@
+           inc( ReadAddr, 3 );
+           inc( WriteAddr, 6 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     4 : for y := 1 to Src.h do
+       begin
+@@ -2883,8 +2883,8 @@
+           inc( ReadAddr, 4 );
+           inc( WriteAddr, 8 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+   end;
+ 
+@@ -2896,7 +2896,7 @@
+ 
+ procedure SDL_Scanline2xBlit( Src, Dest : PSDL_Surface );
+ var
+-  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
++  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+   SrcPitch, DestPitch, x, y : UInt32;
+ begin
+   if ( Src = nil ) or ( Dest = nil ) then
+@@ -2911,8 +2911,8 @@
+   if SDL_MustLock( Dest ) then
+     SDL_LockSurface( Dest );
+ 
+-  ReadRow := UInt32( Src.Pixels );
+-  WriteRow := UInt32( Dest.Pixels );
++  ReadRow := PtrUInt( Src.Pixels );
++  WriteRow := PtrUInt( Dest.Pixels );
+ 
+   SrcPitch := Src.pitch;
+   DestPitch := Dest.pitch;
+@@ -2929,8 +2929,8 @@
+           inc( ReadAddr );
+           inc( WriteAddr, 2 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     2 : for y := 1 to Src.h do
+       begin
+@@ -2943,8 +2943,8 @@
+           inc( ReadAddr, 2 );
+           inc( WriteAddr, 4 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     3 : for y := 1 to Src.h do
+       begin
+@@ -2957,8 +2957,8 @@
+           inc( ReadAddr, 3 );
+           inc( WriteAddr, 6 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     4 : for y := 1 to Src.h do
+       begin
+@@ -2971,8 +2971,8 @@
+           inc( ReadAddr, 4 );
+           inc( WriteAddr, 8 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+   end;
+ 
+@@ -2984,7 +2984,7 @@
+ 
+ procedure SDL_50Scanline2xBlit( Src, Dest : PSDL_Surface );
+ var
+-  ReadAddr, WriteAddr, ReadRow, WriteRow : UInt32;
++  ReadAddr, WriteAddr, ReadRow, WriteRow : PtrUInt;
+   SrcPitch, DestPitch, x, y, Color : UInt32;
+ begin
+   if ( Src = nil ) or ( Dest = nil ) then
+@@ -2999,8 +2999,8 @@
+   if SDL_MustLock( Dest ) then
+     SDL_LockSurface( Dest );
+ 
+-  ReadRow := UInt32( Src.Pixels );
+-  WriteRow := UInt32( Dest.Pixels );
++  ReadRow := PtrUInt( Src.Pixels );
++  WriteRow := PtrUInt( Dest.Pixels );
+ 
+   SrcPitch := Src.pitch;
+   DestPitch := Dest.pitch;
+@@ -3021,8 +3021,8 @@
+           inc( ReadAddr );
+           inc( WriteAddr, 2 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     15 : for y := 1 to Src.h do
+       begin
+@@ -3039,8 +3039,8 @@
+           inc( ReadAddr, 2 );
+           inc( WriteAddr, 4 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     16 : for y := 1 to Src.h do
+       begin
+@@ -3057,8 +3057,8 @@
+           inc( ReadAddr, 2 );
+           inc( WriteAddr, 4 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     24 : for y := 1 to Src.h do
+       begin
+@@ -3075,8 +3075,8 @@
+           inc( ReadAddr, 3 );
+           inc( WriteAddr, 6 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+     32 : for y := 1 to Src.h do
+       begin
+@@ -3093,8 +3093,8 @@
+           inc( ReadAddr, 4 );
+           inc( WriteAddr, 8 );
+         end;
+-        inc( UInt32( ReadRow ), SrcPitch );
+-        inc( UInt32( WriteRow ), DestPitch * 2 );
++        inc( PtrUInt( ReadRow ), SrcPitch );
++        inc( PtrUInt( WriteRow ), DestPitch * 2 );
+       end;
+   end;
+ 
+@@ -3113,7 +3113,7 @@
+   right2, bottom2 : integer;
+   Scan1Start, {Scan2Start,} ScanWidth, ScanHeight : cardinal;
+   Mod1         : cardinal;
+-  Addr1        : cardinal;
++  Addr1        : PtrUInt;
+   BPP          : cardinal;
+   Pitch1       : cardinal;
+   TransparentColor1 : cardinal;
+@@ -3171,7 +3171,7 @@
+   with SrcSurface1^ do
+   begin
+     Pitch1 := Pitch;
+-    Addr1 := cardinal( Pixels );
++    Addr1 := PtrUInt( Pixels );
+     inc( Addr1, Pitch1 * UInt32( Src_Rect1.y ) );
+     with format^ do
+     begin
+@@ -3277,7 +3277,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+   Bits         : cardinal;
+@@ -3350,14 +3350,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := Format.BitsPerPixel;
+@@ -3483,7 +3483,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+   Bits         : cardinal;
+@@ -3556,14 +3556,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := Format.BitsPerPixel;
+@@ -3691,7 +3691,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+   Bits         : cardinal;
+@@ -3764,14 +3764,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := Format.BitsPerPixel;
+@@ -3992,7 +3992,7 @@
+   R, G, B, Pixel1, Pixel2, TransparentColor : cardinal;
+   Src, Dest    : TSDL_Rect;
+   Diff         : integer;
+-  SrcAddr, DestAddr : cardinal;
++  SrcAddr, DestAddr : PtrUInt;
+   WorkX, WorkY : word;
+   SrcMod, DestMod : cardinal;
+   Bits         : cardinal;
+@@ -4065,14 +4065,14 @@
+   end;
+   with SrcSurface^ do
+   begin
+-    SrcAddr := cardinal( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
++    SrcAddr := PtrUInt( Pixels ) + UInt32( Src.y ) * Pitch + UInt32( Src.x ) *
+       Format.BytesPerPixel;
+     SrcMod := Pitch - Src.w * Format.BytesPerPixel;
+     TransparentColor := Format.colorkey;
+   end;
+   with DestSurface^ do
+   begin
+-    DestAddr := cardinal( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
++    DestAddr := PtrUInt( Pixels ) + UInt32( Dest.y ) * Pitch + UInt32( Dest.x ) *
+       Format.BytesPerPixel;
+     DestMod := Pitch - Dest.w * Format.BytesPerPixel;
+     Bits := Format.BitsPerPixel;
+cvs diff: Diffing SDLCtrls
+cvs diff: Diffing SDLCtrls/Demos
+cvs diff: Diffing SDLCtrls/Demos/SDLCtrls
+cvs diff: Diffing SDLCtrls/Demos/SDLCtrls/Graphic
+cvs diff: Diffing SDLCtrls/Pas
+cvs diff: Diffing SDLCtrls/Tools
+cvs diff: Diffing SDLCtrls/Tools/SDLFDesign
+cvs diff: Diffing SDLCtrls/Tools/SDLFDesign/Data
+cvs diff: Diffing SDLCtrls/Tools/SDLFDesign/Source
+cvs diff: Diffing SDLCtrls/Tools/SDLImages
+cvs diff: Diffing SDLCtrls/Tools/SGFont
+cvs diff: Diffing SDLCtrls/Tools/SGFont/SGFontConv
+cvs diff: Diffing SDLCtrls/docs
+cvs diff: Diffing SDLCtrls/docs/images
+cvs diff: Diffing SDLCtrls/zlib
+cvs diff: Diffing SDLFilter
+cvs diff: Diffing SDLFilter/Demos
+cvs diff: Diffing SDLFilter/Demos/Test
+cvs diff: Diffing SDLFilter/Demos/Test/images
+cvs diff: Diffing SDLFilter/Pas
+cvs diff: Diffing SDLMonoFonts
+cvs diff: Diffing SDLMonoFonts/Demos
+cvs diff: Diffing SDLMonoFonts/Demos/Test
+cvs diff: Diffing SDLMonoFonts/Images
+cvs diff: Diffing SDLMonoFonts/Pas
+Index: SDLMonoFonts/Pas/sdlmonofonts.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/SDLMonoFonts/Pas/sdlmonofonts.pas,v
+retrieving revision 1.3
+diff -u -r1.3 sdlmonofonts.pas
+--- SDLMonoFonts/Pas/sdlmonofonts.pas	26 Nov 2006 10:25:19 -0000	1.3
++++ SDLMonoFonts/Pas/sdlmonofonts.pas	27 Feb 2008 09:16:12 -0000
+@@ -152,7 +152,7 @@
+     end;
+     inc( ReadPos );
+   until ReadPos >= TextLength;
+-  FoundWord := pointer( cardinal( Txt ) + StartPos );
++  FoundWord := pointer( PtrUInt( Txt ) + StartPos );
+   ItsLength := ReadPos - StartPos;
+ end;
+ 
+cvs diff: Diffing SDLSpriteEngine
+cvs diff: Diffing SDLSpriteEngine/Demos
+cvs diff: Diffing SDLSpriteEngine/Demos/CollisionTest
+cvs diff: Diffing SDLSpriteEngine/Demos/Oxygene
+cvs diff: Diffing SDLSpriteEngine/Demos/Oxygene/Caverns
+cvs diff: Diffing SDLSpriteEngine/Demos/Oxygene/Gfx
+cvs diff: Diffing SDLSpriteEngine/Demos/Oxygene/Music
+cvs diff: Diffing SDLSpriteEngine/Demos/Oxygene/Sounds
+cvs diff: Diffing SDLSpriteEngine/Demos/Shooting
+Index: SDLSpriteEngine/Demos/Shooting/Shooting.dpr
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/SDLSpriteEngine/Demos/Shooting/Shooting.dpr,v
+retrieving revision 1.2
+diff -u -r1.2 Shooting.dpr
+--- SDLSpriteEngine/Demos/Shooting/Shooting.dpr	23 Dec 2004 23:37:27 -0000	1.2
++++ SDLSpriteEngine/Demos/Shooting/Shooting.dpr	27 Feb 2008 09:16:13 -0000
+@@ -445,13 +445,13 @@
+   y : integer;
+   Row : array[ 0..319 ] of byte;
+   MustLock : boolean;
+-  Video1, Video2 : cardinal;
++  Video1, Video2 : PtrUInt;
+ begin
+   MustLock := SDL_MustLock( Background );
+   if MustLock then
+     SDL_LockSurface( Background );
+-  Video1 := cardinal( Background.pixels ) + 238 * Background.pitch; { from }
+-  Video2 := cardinal( Background.pixels ) + 239 * Background.pitch; { to }
++  Video1 := PtrUInt( Background.pixels ) + 238 * Background.pitch; { from }
++  Video2 := PtrUInt( Background.pixels ) + 239 * Background.pitch; { to }
+   { store lowest row }
+   Move( pointer( Video2 )^, Row[ 0 ], 320 );
+   for y := 0 to 238 do
+cvs diff: Diffing SDLSpriteEngine/Demos/ZTest
+cvs diff: Diffing SDLSpriteEngine/Demos/images
+cvs diff: Diffing SDLSpriteEngine/Pas
+cvs diff: Diffing SDL_Gfx
+cvs diff: Diffing SDL_Gfx/Pas
+cvs diff: Diffing SDL_Image
+cvs diff: Diffing SDL_Image/Pas
+cvs diff: Diffing SDL_Mixer
+cvs diff: Diffing SDL_Mixer/Demos
+cvs diff: Diffing SDL_Mixer/Demos/WavTest
+cvs diff: Diffing SDL_Mixer/Pas
+cvs diff: Diffing SDL_Net
+cvs diff: Diffing SDL_Net/Demos
+cvs diff: Diffing SDL_Net/Demos/Clients
+cvs diff: Diffing SDL_Net/Demos/Clients/TCPConsole
+cvs diff: Diffing SDL_Net/Demos/Clients/TCPGUI
+cvs diff: Diffing SDL_Net/Demos/Clients/TimeSync
+cvs diff: Diffing SDL_Net/Demos/Clients/UDPConsole
+cvs diff: Diffing SDL_Net/Demos/Servers
+cvs diff: Diffing SDL_Net/Demos/Servers/TCPMulti
+cvs diff: Diffing SDL_Net/Demos/Servers/TimeSync
+cvs diff: Diffing SDL_Net/Demos/Servers/UDP
+cvs diff: Diffing SDL_Net/Demos/WebUpdate
+cvs diff: Diffing SDL_Net/Demos/WebUpdate/fonts
+cvs diff: Diffing SDL_Net/Demos/WebUpdate/images
+cvs diff: Diffing SDL_Net/Pas
+cvs diff: Diffing SDL_Sound
+cvs diff: Diffing SDL_Sound/Pas
+cvs diff: Diffing SDL_flic
+cvs diff: Diffing SDL_flic/Demo
+cvs diff: Diffing SDL_flic/Pas
+Index: SDL_flic/Pas/sdl_flic.pas
+===================================================================
+RCS file: /cvsroot/jedi-sdl/JEDI-SDLv1.0/SDL_flic/Pas/sdl_flic.pas,v
+retrieving revision 1.1
+diff -u -r1.1 sdl_flic.pas
+--- SDL_flic/Pas/sdl_flic.pas	4 Jan 2006 00:49:06 -0000	1.1
++++ SDL_flic/Pas/sdl_flic.pas	27 Feb 2008 09:16:14 -0000
+@@ -276,16 +276,16 @@
+ var line , p: PUInt8;
+     numlines, numpackets, size: Integer;
+ begin
+-  line :=PUint8( Integer(flic.Surface.pixels) + readu16(flic) * flic.Surface.pitch);
++  line :=PUint8( PtrInt(flic.Surface.pixels) + readu16(flic) * flic.Surface.pitch);
+   numlines := readu16(flic);
+   while (numlines > 0) do
+   begin
+     p := line;
+-    line := PUint8(Integer(line) + flic.Surface.pitch);
++    line := PUint8(PtrInt(line) + flic.Surface.pitch);
+     numpackets := readu8(flic);
+     while numpackets > 0 do
+     begin
+-      p := PUint8(Integer(p)+ readu8(flic));
++      p := PUint8(PtrInt(p)+ readu8(flic));
+       size := Sint8(readu8(flic));
+       if size >= 0 then
+         readbuffer(flic, p, size)
+@@ -294,7 +294,7 @@
+         size := -size;
+         FillChar(p^, size, readu8(flic));
+       end;
+-      p := PUint8(Integer(p) + Size);
++      p := PUint8(PtrInt(p) + Size);
+       dec(numpackets);
+     end;
+     dec(numlines);
+@@ -316,8 +316,8 @@
+   begin
+           //* The number of packages is ignored, packets run until the next line is reached. */
+     readu8(flic);
+-    next := PUint8(Integer(p) + flic.Surface.pitch);
+-    while (Integer(p) < Integer(next)) do
++    next := PUint8(PtrInt(p) + flic.Surface.pitch);
++    while (PtrInt(p) < PtrInt(next)) do
+     begin
+        // size pixels will change. */
+        size := SInt8(readu8(flic));
+@@ -332,7 +332,7 @@
+           //* One pixel to be repeated follow. */
+           FillChar(p^, size, readu8(flic));
+        end;
+-       p := PUint8(Integer(p) + size);
++       p := PUint8(PtrInt(p) + size);
+      end;
+      dec(numlines);
+   end;
+@@ -382,11 +382,11 @@
+     case ((code shr 14) and $03) of
+       $00:
+         begin
+-          p := PUint8(Uint32(flic.Surface.pixels) + flic.Surface.pitch * y);
++          p := PUint8(PtrUInt(flic.Surface.pixels) + flic.Surface.pitch * y);
+           while (code > 0) do
+           begin
+             // Skip some pixels.
+-            p := PUint8(Integer(p) + readu8(flic));
++            p := PUint8(PtrInt(p) + readu8(flic));
+             size := SInt8(readu8(flic)) * 2;
+             if (size >= 0) then
+             begin
+@@ -399,7 +399,7 @@
+               readu8(flic);
+               FillChar(p, size, readu8(flic));
+             end;
+-            p := PUint8(Integer(p)+size);
++            p := PUint8(PtrInt(p)+size);
+             dec(code);
+           end;
+           y := y + 1;
+@@ -409,7 +409,7 @@
+       $02:
+         begin
+           // Last pixel of the line. */
+-          p := Pointer(UInt32(flic.Surface.pixels) + flic.Surface.pitch * UInt32(y + 1));
++          p := Pointer(PtrUInt(flic.Surface.pixels) + flic.Surface.pitch * UInt32(y + 1));
+           //p[-1] = code & 0xFF;
+           PUint8(p^-1)^ := code and $FF;
+         end;
+cvs diff: Diffing SDL_ttf
+cvs diff: Diffing SDL_ttf/Demos
+cvs diff: Diffing SDL_ttf/Demos/GLFont
+cvs diff: Diffing SDL_ttf/Demos/ShowFont
+cvs diff: Diffing SDL_ttf/Pas
+cvs diff: Diffing SFont
+cvs diff: Diffing SFont/Demos
+cvs diff: Diffing SFont/Demos/Tests
+cvs diff: Diffing SFont/Demos/Tests/images
+cvs diff: Diffing SFont/Pas
+cvs diff: Diffing fmod
+cvs diff: Diffing fmod/Pas
+cvs diff: Diffing smpeg
+cvs diff: Diffing smpeg/Demos
+cvs diff: Diffing smpeg/Demos/GLMovie
+cvs diff: Diffing smpeg/Demos/MpegPlayer
+cvs diff: Diffing smpeg/Demos/SMpegPlayer
+cvs diff: Diffing smpeg/Pas
diff --git a/src/lib/JEDI-SDL/moduleloader-libc.patch b/src/lib/JEDI-SDL/moduleloader-libc.patch
new file mode 100644
index 00000000..02255db0
--- /dev/null
+++ b/src/lib/JEDI-SDL/moduleloader-libc.patch
@@ -0,0 +1,25 @@
+Index: SDL/Pas/moduleloader.pas

+===================================================================

+--- SDL/Pas/moduleloader.pas	(revision 1144)

++++ SDL/Pas/moduleloader.pas	(working copy)

+@@ -185,15 +185,16 @@

+ 
+ {$IFDEF Unix}
+ uses
+-{$ifdef Linux}
+-  Types,
+-  Libc;
+-{$else}
++{$ifdef FPC}
+   dl,
+   Types,
+   Baseunix,
+   Unix;
++{$else}
++  Types,
++  Libc;
+ {$endif}
++
+ type
+   // Handle to a loaded .so
+   TModuleHandle = Pointer;