(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_GetSurfaceAlphaMod

Get the additional alpha value used in blit operations.

Header File

Defined in <SDL3/SDL_surface.h>

Syntax

bool SDL_GetSurfaceAlphaMod(SDL_Surface *surface, Uint8 *alpha);

Function Parameters

SDL_Surface *	surface	the SDL_Surface structure to query.
Uint8 *	alpha	a pointer filled in with the current alpha value.

Return Value

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

Version

This function is available since SDL 3.1.3.

See Also

• SDL_GetSurfaceColorMod
• SDL_SetSurfaceAlphaMod

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CategoryAPI, CategoryAPIFunction, CategorySurface

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