Add the SDL_DestroyWindowSurface function

Author: suve

units/sdl2.pas

@@ -141,7 +141,7 @@ interface
 {$I sdlaudio.inc}                // 2.26.3
 {$I sdlblendmode.inc}            // 2.0.14
 {$I sdlsurface.inc}              // 2.0.14
-{$I sdlvideo.inc}                // 2.26.0
+{$I sdlvideo.inc}                // 2.28.0
 {$I sdlshape.inc}                // 2.24.0
 {$I sdlhints.inc}                // 2.26.0
 {$I sdlloadso.inc}               // 2.24.1

units/sdlvideo.inc

@@ -989,6 +989,21 @@ function SDL_UpdateWindowSurface(window: PSDL_Window): cint; cdecl;
 function SDL_UpdateWindowSurfaceRects(window: PSDL_Window; rects: PSDL_Rect; numrects: cint): cint; cdecl;
   external SDL_LibName {$IFDEF DELPHI} {$IFDEF MACOS} name '_SDL_UpdateWindowSurfaceRects' {$ENDIF} {$ENDIF};
 
+  {**
+   * Destroy the surface associated with the window.
+   *
+   * \param window the window to update
+   * \returns 0 on success or a negative error code on failure; call
+   *          SDL_GetError() for more information.
+   *
+   * \since This function is available since SDL 2.28.0.
+   *
+   * \sa SDL_GetWindowSurface
+   * \sa SDL_HasWindowSurface
+   *}
+function SDL_DestroyWindowSurface(window: PSDL_Window): cint; cdecl;
+  external SDL_LibName {$IFDEF DELPHI} {$IFDEF MACOS} name '_SDL_DestroyWindowSurface' {$ENDIF} {$ENDIF};
+
   {**
    *  Set a window's input grab mode.
    *