SDL_GetSurfaceAlphaMod - Get the additional alpha value used in blit operations.

       This function is available since SDL 3.2.0.

surface
              the SDL_Surface structure to query.

       alpha  a pointer filled in with the current alpha value.

       SDL_GetSurfaceAlphaMod - Get the additional alpha value used in blit operations.

       for more information.

SDL_GetSurfaceColorMod(3), SDL_SetSurfaceAlphaMod(3)

Simple Directmedia Layer                           SDL 3.2.20                          SDL_GetSurfaceAlphaMod(3)

#include<SDL3/SDL_surface.h>boolSDL_GetSurfaceAlphaMod(SDL_Surface*surface,Uint8*alpha);

       It is safe to call this function from any thread.