+inline Pixel SDLGetPixel(Bitmap *dst_bitmap, int x, int y)
+{
+ SDL_Surface *surface = dst_bitmap->surface;
+
+#ifdef FULLSCREEN_BUG
+ if (dst_bitmap == backbuffer || dst_bitmap == window)
+ {
+ x += video_xoffset;
+ y += video_yoffset;
+ }
+#endif
+
+ switch (surface->format->BytesPerPixel)
+ {
+ case 1: /* assuming 8-bpp */
+ {
+ return *((Uint8 *)surface->pixels + y * surface->pitch + x);
+ }
+ break;
+
+ case 2: /* probably 15-bpp or 16-bpp */
+ {
+ return *((Uint16 *)surface->pixels + y * surface->pitch / 2 + x);
+ }
+ break;
+
+ case 3: /* slow 24-bpp mode; usually not used */
+ {
+ /* does this work? */
+ Uint8 *pix = (Uint8 *)surface->pixels + y * surface->pitch + x * 3;
+ Uint32 color = 0;
+ int shift;
+
+ shift = surface->format->Rshift;
+ color |= *(pix + shift / 8) >> shift;
+ shift = surface->format->Gshift;
+ color |= *(pix + shift / 8) >> shift;
+ shift = surface->format->Bshift;
+ color |= *(pix + shift / 8) >> shift;
+
+ return color;
+ }
+ break;
+
+ case 4: /* probably 32-bpp */
+ {
+ return *((Uint32 *)surface->pixels + y * surface->pitch / 4 + x);
+ }
+ break;
+ }
+
+ return 0;
+}
+