NAME

       SDL_SetSurfaceAlphaMod - Set an additional alpha value used in blit operations.

HEADER FILE

       Defined in SDL3/SDL_surface.h

SYNOPSIS

       #include "SDL3/SDL.h"

       bool SDL_SetSurfaceAlphaMod(SDL_Surface *surface, Uint8 alpha);

DESCRIPTION

       When this surface is blitted, during the blit operation the source alpha value is modulated by this alpha
       value according to the following formula: srcA=srcA*(alpha/255)

FUNCTION PARAMETERS

       surface
              the SDL_Surface
               structure to update.

       alpha  the alpha value multiplied into blit operations.

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_GetSurfaceAlphaMod(3), •(3), SDL_SetSurfaceColorMod(3)

Simple Directmedia Layer                            SDL 3.2.8                          SDL_SetSurfaceAlphaMod(3)