diff options
Diffstat (limited to 'Game/Code/lib/JEDI-SDL')
| -rw-r--r-- | Game/Code/lib/JEDI-SDL/OpenGL/Pas/opengl12.pas | 2 | ||||
| -rw-r--r-- | Game/Code/lib/JEDI-SDL/SDL/Pas/sdlutils.pas | 8722 |
2 files changed, 4362 insertions, 4362 deletions
diff --git a/Game/Code/lib/JEDI-SDL/OpenGL/Pas/opengl12.pas b/Game/Code/lib/JEDI-SDL/OpenGL/Pas/opengl12.pas index 763edaee..a79e1c6f 100644 --- a/Game/Code/lib/JEDI-SDL/OpenGL/Pas/opengl12.pas +++ b/Game/Code/lib/JEDI-SDL/OpenGL/Pas/opengl12.pas @@ -7073,7 +7073,7 @@ threadvar var
{$endif}
LastPixelFormat: Integer;
- ActivationRefCount: Integer;
+// ActivationRefCount: Integer; // Auto Removed, Unused Variable
{$ifdef Win32}
const
diff --git a/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlutils.pas b/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlutils.pas index b15fa9ba..3941814d 100644 --- a/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlutils.pas +++ b/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlutils.pas @@ -1,4361 +1,4361 @@ -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,
- 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 : 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 : 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;
-
-procedure SDL_AddPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color :
- cardinal );
-var
- SrcColor : cardinal;
- Addr : cardinal;
- R, G, B : cardinal;
-begin
- if Color = 0 then
- exit;
- with DstSurface^ do
- begin
- Addr := cardinal( 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 : cardinal;
- R, G, B : cardinal;
-begin
- if Color = 0 then
- exit;
- with DstSurface^ do
- begin
- Addr := cardinal( 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 : 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
- 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 : 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 := 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 : cardinal;
- _ebx, _esi, _edi, _esp : cardinal;
- 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 := 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;
- 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 : cardinal;
- _ebx, _esi, _edi, _esp : cardinal;
- WorkX, WorkY : word;
- SrcMod, DestMod, TextMod : cardinal;
- SrcColor, TransparentColor, TextureColor : 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 := 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;
- BPP := DestSurface.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( 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( 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_MoveLine( Surface : PSDL_Surface; x1, x2, y1, xofs, depth : integer );
-var
- src_pixels, dst_pixels : PUint8;
- i : integer;
-begin
- src_pixels := PUint8( integer( Surface^.pixels ) + Surface^.w * y1 * depth + x2 *
- depth );
- dst_pixels := PUint8( integer( 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( 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;
-{ 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( Uint32( 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( 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 : 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;
-
- 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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 : UInt32;
- 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 := UInt32( Src.Pixels );
- WriteRow := UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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 : UInt32;
- 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 := UInt32( Src.Pixels );
- WriteRow := UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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( UInt32( ReadRow ), SrcPitch );
- inc( UInt32( 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 : 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
- 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 )^;
- 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;
- 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 )^;
- 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 : 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;
-
-// 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.
-
+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, + 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 : 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 : cardinal; + 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 := 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; + +procedure SDL_AddPixel( DstSurface : PSDL_Surface; x : cardinal; y : cardinal; Color : + cardinal ); +var + SrcColor : cardinal; + Addr : cardinal; + R, G, B : cardinal; +begin + if Color = 0 then + exit; + with DstSurface^ do + begin + Addr := cardinal( 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 : cardinal; + R, G, B : cardinal; +begin + if Color = 0 then + exit; + with DstSurface^ do + begin + Addr := cardinal( 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 : 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 + 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 : cardinal; +//{*_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 := 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 := 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 : cardinal; +//{*_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 := 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; + 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 : cardinal; +//{*_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 := 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; + BPP := DestSurface.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( 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( 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_MoveLine( Surface : PSDL_Surface; x1, x2, y1, xofs, depth : integer ); +var + src_pixels, dst_pixels : PUint8; + i : integer; +begin + src_pixels := PUint8( integer( Surface^.pixels ) + Surface^.w * y1 * depth + x2 * + depth ); + dst_pixels := PUint8( integer( 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( 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; +{ 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( Uint32( 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( 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 : 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; + + 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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 : UInt32; + 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 := UInt32( Src.Pixels ); + WriteRow := UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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 : UInt32; + 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 := UInt32( Src.Pixels ); + WriteRow := UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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( UInt32( ReadRow ), SrcPitch ); + inc( UInt32( 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 : cardinal; + 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 := 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 +{*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 : 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 )^; + 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 : 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 )^; + 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 : 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; + +// 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. + |