(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_GetSurfaceAlphaMod

Get the additional alpha value used in blit operations.

Syntax

int 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 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Version

This function is available since SDL 3.0.0.

Related Functions

• SDL_GetSurfaceColorMod
• SDL_SetSurfaceAlphaMod

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CategoryAPI, CategorySurface

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