anchor.diff:     *  SDL_GetWindowGammaRamp()
      *}
   
  -  function SDL_SetWindowGammaRamp(window: PSDLWindow; const red: PUInt16; const green: PUInt16; const blue: PUInt16): SInt32 cdecl; external {$IFDEF GPC} name 'SDL_SetWindowGammaRamp' {$ELSE} SDL_LibName {$ENDIF};
  +  function SDL_SetWindowGammaRamp(window: PSDL_Window; const red: PUInt16; const green: PUInt16; const blue: PUInt16): SInt32 cdecl; external {$IFDEF GPC} name 'SDL_SetWindowGammaRamp' {$ELSE} SDL_LibName {$ENDIF};
   
     {**
      *  Get the gamma ramp for a window.
  
positive.code:    *  SDL_GL_CreateContext()
     *}
  
    procedure SDL_GL_DeleteContext(context: TSDLGLContext) cdecl; external {$IFDEF GPC} name 'SDL_GL_DeleteContext' {$ELSE} SDL_LibName {$ENDIF};
  
    {*OpenGL support functions*}
  
  
negative.code:    *  SDL_FreePalette()
     *}
  
  function SDL_AllocPalette(ncolors: SInt32): PSDL_Palette cdecl; external {$IFDEF GPC} name 'SDL_AllocPalette' {$ELSE} SDL_LibName {$ENDIF};
  
    {**
     *  Set the palette for a pixel format structure.
     *}
  
  function SDL_SetPixelFormatPalette(format: PSDL_PixelFormat; palette: PSDL_Palette): SInt32 cdecl; external {$IFDEF GPC} name 'SDL_SetPixelFormatPalette' {$ELSE} SDL_LibName {$ENDIF};
  
    {**
     *  Set a range of colors in a palette.
  