+inline void SDLPutPixel(Bitmap *, int, int, Pixel);
+
+inline void SDLInvertArea(Bitmap *, int, int, int, int, Uint32);
+inline void SDLCopyInverseMasked(Bitmap *, Bitmap *, int, int, int, int,
+ int, int);
+
+void SDLZoomBitmap(Bitmap *, Bitmap *);