Set an additional color value multiplied into blit operations.
int SDL_SetSurfaceColorMod(SDL_Surface * surface, Uint8 r, Uint8 g, Uint8 b);
|surface||the SDL_Surface structure to update|
|r||the red color value multiplied into blit operations|
|g||the green color value multiplied into blit operations|
|b||the blue color value multiplied into blit operations|
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
When this surface is blitted, during the blit operation each source color channel is modulated by the appropriate color value according to the following formula:
srcC = srcC * (color / 255)
This function is available since SDL 2.0.0.