Provided by: libsdl3-doc_3.2.8+ds-1_all 

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.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_GetSurfaceColorMod(3), •(3), SDL_SetSurfaceAlphaMod(3) Simple Directmedia Layer SDL 3.2.8 SDL_GetSurfaceAlphaMod(3)