Function fermium::surface::SDL_SetSurfaceAlphaMod
source · pub unsafe extern "C" fn SDL_SetSurfaceAlphaMod(
surface: *mut SDL_Surface,
alpha: u8
) -> c_int
Expand description
Get the additional alpha value used in blit operations.
surface
: The surface to query.alpha
: A pointer filled in with the current alpha value.
Return: 0 on success, or -1 if the surface is not valid.