Code will never reach SDL_SetTexturePalette since SDL_SetDisplayPalette

will fail if the display e.g. is RGB32 or RGB24. The patch will ignore
errors in SDL_SetDislayPalette.
This should also affect the opengl renderer on systems supporting
paletted textures - mine does not (NVIDIA).
With this patch the directfb drivers delivers the same results for
test_palette like the software renderer.

Kind regards,

André

src/SDL_compat.c

@@ -321,7 +321,10 @@ SDL_VideoPaletteChanged(void *userdata, SDL_Palette * palette)
     }
     if (userdata == SDL_VideoSurface) {
         if (SDL_SetDisplayPalette(palette->colors, 0, palette->ncolors) < 0) {
-            return -1;
+        	/* The display surface not necessarily needs to have a palette.
+        	 * Just do nothing here and try to set the texture palette.
+        	 */
+            //return -1;
         }
         if (SDL_SetTexturePalette
             (SDL_VideoTexture, palette->colors, 0, palette->ncolors) < 0) {