diff options
Diffstat (limited to 'Game/Code/lib/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas')
| -rw-r--r-- | Game/Code/lib/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas | 4256 |
1 files changed, 0 insertions, 4256 deletions
diff --git a/Game/Code/lib/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas b/Game/Code/lib/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas deleted file mode 100644 index bef83cbc..00000000 --- a/Game/Code/lib/JEDI-SDLv1.0/SDL/Pas/sdlutils.pas +++ /dev/null @@ -1,4256 +0,0 @@ -unit sdlutils;
-{
- $Id: sdlutils.pas,v 1.4 2004/06/02 19:38:53 savage Exp $
-
-}
-{******************************************************************************}
-{ }
-{ Borland Delphi SDL - Simple DirectMedia Layer }
-{ SDL Utility functions }
-{ }
-{ }
-{ The initial developer of this Pascal code was : }
-{ Tom Jones <tigertomjones@gmx.de> }
-{ }
-{ Portions created by Tom Jones are }
-{ Copyright (C) 2000 - 2001 Tom Jones. }
-{ }
-{ }
-{ Contributor(s) }
-{ -------------- }
-{ Dominique Louis <Dominique@SavageSoftware.com.au> }
-{ Róbert Kisnémeth <mikrobi@freemail.hu> }
-{ }
-{ Obtained through: }
-{ Joint Endeavour of Delphi Innovators ( Project JEDI ) }
-{ }
-{ You may retrieve the latest version of this file at the Project }
-{ JEDI home page, located at http://delphi-jedi.org }
-{ }
-{ The contents of this file are used with permission, subject to }
-{ the Mozilla Public License Version 1.1 (the "License"); you may }
-{ not use this file except in compliance with the License. You may }
-{ obtain a copy of the License at }
-{ http://www.mozilla.org/MPL/MPL-1.1.html }
-{ }
-{ Software distributed under the License is distributed on an }
-{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or }
-{ implied. See the License for the specific language governing }
-{ rights and limitations under the License. }
-{ }
-{ Description }
-{ ----------- }
-{ Helper functions... }
-{ }
-{ }
-{ Requires }
-{ -------- }
-{ SDL.dll on Windows platforms }
-{ libSDL-1.1.so.0 on Linux platform }
-{ }
-{ Programming Notes }
-{ ----------------- }
-{ }
-{ }
-{ }
-{ }
-{ Revision History }
-{ ---------------- }
-{ 2000 - TJ : Initial creation }
-{ }
-{ July 13 2001 - DL : Added PutPixel and GetPixel routines. }
-{ }
-{ Sept 14 2001 - RK : Added flipping routines. }
-{ }
-{ Sept 19 2001 - RK : Added PutPixel & line drawing & blitting with ADD }
-{ effect. Fixed a bug in SDL_PutPixel & SDL_GetPixel }
-{ Added PSDLRect() }
-{ Sept 22 2001 - DL : Removed need for Windows.pas by defining types here}
-{ Also removed by poor attempt or a dialog box }
-{ }
-{ Sept 25 2001 - RK : Added PixelTest, NewPutPixel, SubPixel, SubLine, }
-{ SubSurface, MonoSurface & TexturedSurface }
-{ }
-{ Sept 26 2001 - DL : Made change so that it refers to native Pascal }
-{ types rather that Windows types. This makes it more}
-{ portable to Linix. }
-{ }
-{ Sept 27 2001 - RK : SDLUtils now can be compiled with FreePascal }
-{ }
-{ Oct 27 2001 - JF : Added ScrollY function }
-{ }
-{ Jan 21 2002 - RK : Added SDL_ZoomSurface and SDL_WarpSurface }
-{ }
-{ Mar 28 2002 - JF : Added SDL_RotateSurface }
-{ }
-{ May 13 2002 - RK : Improved SDL_FillRectAdd & SDL_FillRectSub }
-{ }
-{ May 27 2002 - YS : GradientFillRect function }
-{ }
-{ May 30 2002 - RK : Added SDL_2xBlit, SDL_Scanline2xBlit }
-{ & SDL_50Scanline2xBlit }
-{ }
-{ June 12 2002 - RK : Added SDL_PixelTestSurfaceVsRect }
-{ }
-{ June 12 2002 - JF : Updated SDL_PixelTestSurfaceVsRect }
-{ }
-{ November 9 2002 - JF : Added Jason's boolean Surface functions }
-{ }
-{ December 10 2002 - DE : Added Dean's SDL_ClipLine function }
-{ }
-{ 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 1.4 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.
-
-
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