Set the RLE acceleration hint for a surface.
int SDL_SetSurfaceRLE(SDL_Surface * surface, int flag);
|surface||the SDL_Surface structure to optimize|
|flag||0 to disable, non-zero to enable RLE acceleration|
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
If RLE is enabled, color key and alpha blending blits are much faster, but the surface must be locked before directly accessing the pixels.
This function is available since SDL 2.0.0.