Copy an existing surface to a new surface of the specified format.
SDL_Surface* SDL_ConvertSurfaceconst SDL_PixelFormat * fmt, Uint32 flags); (SDL_Surface * src,
|src||the existing SDL_Surface structure to convert|
|fmt||the SDL_PixelFormat structure that the new surface is optimized for|
|flags||the flags are unused and should be set to 0; this is a leftover from SDL 1.2's API|
Returns the new SDL_Surface structure that is created or NULL if it fails; call SDL_GetError() for more information.
This function is used to optimize images for faster repeat blitting. This is accomplished by converting the original and storing the result as a new surface. The new, optimized surface can then be used as the source for future blits, making them faster.
This function is available since SDL 2.0.0.