+/* endianness setup */
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ #define RMASK 0xff000000
+ #define GMASK 0x00ff0000
+ #define BMASK 0x0000ff00
+ #define AMASK 0x000000ff
+#else
+ #define RMASK 0x000000ff
+ #define GMASK 0x0000ff00
+ #define BMASK 0x00ff0000
+ #define AMASK 0xff000000
+#endif
+