NAME
SDL_GetSurfaceAlphaMod - Get the additional alpha value used in blit operations.
HEADER FILE
Defined in SDL3/SDL_surface.h
SYNOPSIS
#include "SDL3/SDL.h"
bool SDL_GetSurfaceAlphaMod(SDL_Surface *surface, Uint8 *alpha);
FUNCTION PARAMETERS
- surface
-
the SDL_Surface
structure to query.
- alpha
-
a pointer filled in with the current alpha value.
RETURN VALUE
Returns true on success or false on failure; call
SDL_GetError () for more information.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetSurfaceColorMod(3), •(3), SDL_SetSurfaceAlphaMod(3)