NAME

SDL_PremultiplySurfaceAlpha - Premultiply the alpha in a surface.

SYNOPSIS

#include <SDL3/SDL_surface.h>

bool SDL_PremultiplySurfaceAlpha(SDL_Surface *surface, bool linear);

DESCRIPTION

This is safe to use with src == dst, but not for other overlapping areas.

FUNCTION PARAMETERS

surface

the surface to modify.

linear

true to convert from sRGB to linear space for the alpha multiplication, false to do multiplication in sRGB space.

RETURN VALUE

Returns true on success or false on failure; call SDL_GetError() for more information.

THREAD SAFETY

This function can be called on different threads with different surfaces.

AVAILABILITY

This function is available since SDL 3.2.0.