NAME

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

SYNOPSIS

#include <SDL3/SDL_surface.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

SDL_GetSurfaceColorMod(3), SDL_SetSurfaceAlphaMod(3)