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Diffstat (limited to 'lib/base/sdl/sdlutils.pas')
| -rw-r--r-- | lib/base/sdl/sdlutils.pas | 4354 |
1 files changed, 0 insertions, 4354 deletions
diff --git a/lib/base/sdl/sdlutils.pas b/lib/base/sdl/sdlutils.pas deleted file mode 100644 index e4206e935..000000000 --- a/lib/base/sdl/sdlutils.pas +++ /dev/null @@ -1,4354 +0,0 @@ -unit sdlutils; -{ - $Id: sdlutils.pas,v 1.5 2006/11/19 18:56:44 savage Exp $ - -} -{******************************************************************************} -{ } -{ Borland Delphi SDL - Simple DirectMedia Layer } -{ SDL Utility functions } -{ } -{ } -{ The initial developer of this Pascal code was : } -{ Tom Jones <tigertomjones@gmx.de> } -{ } -{ Portions created by Tom Jones are } -{ Copyright (C) 2000 - 2001 Tom Jones. } -{ } -{ } -{ Contributor(s) } -{ -------------- } -{ Dominique Louis <Dominique@SavageSoftware.com.au> } -{ Róbert Kisnémeth <mikrobi@freemail.hu> } -{ } -{ Obtained through: } -{ Joint Endeavour of Delphi Innovators ( Project JEDI ) } -{ } -{ You may retrieve the latest version of this file at the Project } -{ JEDI home page, located at http://delphi-jedi.org } -{ } -{ The contents of this file are used with permission, subject to } -{ the Mozilla Public License Version 1.1 (the "License"); you may } -{ not use this file except in compliance with the License. You may } -{ obtain a copy of the License at } -{ http://www.mozilla.org/MPL/MPL-1.1.html } -{ } -{ Software distributed under the License is distributed on an } -{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or } -{ implied. See the License for the specific language governing } -{ rights and limitations under the License. } -{ } -{ Description } -{ ----------- } -{ Helper functions... } -{ } -{ } -{ Requires } -{ -------- } -{ SDL.dll on Windows platforms } -{ libSDL-1.1.so.0 on Linux platform } -{ } -{ Programming Notes } -{ ----------------- } -{ } -{ } -{ } -{ } -{ Revision History } -{ ---------------- } -{ 2000 - TJ : Initial creation } -{ } -{ July 13 2001 - DL : Added PutPixel and GetPixel routines. } -{ } -{ Sept 14 2001 - RK : Added flipping routines. } -{ } -{ Sept 19 2001 - RK : Added PutPixel & line drawing & blitting with ADD } -{ effect. Fixed a bug in SDL_PutPixel & SDL_GetPixel } -{ Added PSDLRect() } -{ Sept 22 2001 - DL : Removed need for Windows.pas by defining types here} -{ Also removed by poor attempt or a dialog box } -{ } -{ Sept 25 2001 - RK : Added PixelTest, NewPutPixel, SubPixel, SubLine, } -{ SubSurface, MonoSurface & TexturedSurface } -{ } -{ Sept 26 2001 - DL : Made change so that it refers to native Pascal } -{ types rather that Windows types. This makes it more} -{ portable to Linix. } -{ } -{ Sept 27 2001 - RK : SDLUtils now can be compiled with FreePascal } -{ } -{ Oct 27 2001 - JF : Added ScrollY function } -{ } -{ Jan 21 2002 - RK : Added SDL_ZoomSurface and SDL_WarpSurface } -{ } -{ Mar 28 2002 - JF : Added SDL_RotateSurface } -{ } -{ May 13 2002 - RK : Improved SDL_FillRectAdd & SDL_FillRectSub } -{ } -{ May 27 2002 - YS : GradientFillRect function } -{ } -{ May 30 2002 - RK : Added SDL_2xBlit, SDL_Scanline2xBlit } -{ & SDL_50Scanline2xBlit } -{ } -{ June 12 2002 - RK : Added SDL_PixelTestSurfaceVsRect } -{ } -{ June 12 2002 - JF : Updated SDL_PixelTestSurfaceVsRect } -{ } -{ November 9 2002 - JF : Added Jason's boolean Surface functions } -{ } -{ December 10 2002 - DE : Added Dean's SDL_ClipLine function } -{ } -{ April 26 2003 - SS : Incorporated JF's changes to SDL_ClipLine } -{ Fixed SDL_ClipLine bug for non-zero cliprect x, y } -{ Added overloaded SDL_DrawLine for dashed lines } -{ } -{******************************************************************************} -{ - $Log: sdlutils.pas,v $ - Revision 1.5 2006/11/19 18:56:44 savage - Removed Hints and Warnings. - - Revision 1.4 2004/06/02 19:38:53 savage - Changes to SDL_GradientFillRect as suggested by - Ángel Eduardo García Hernández. Many thanks. - - Revision 1.3 2004/05/29 23:11:54 savage - Changes to SDL_ScaleSurfaceRect as suggested by - Ángel Eduardo García Hernández to fix a colour issue with the function. Many thanks. - - Revision 1.2 2004/02/14 00:23:39 savage - As UNIX is defined in jedi-sdl.inc this will be used to check linux compatability as well. Units have been changed to reflect this change. - - Revision 1.1 2004/02/05 00:08:20 savage - Module 1.0 release - - -} - -interface - -uses - 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. - |