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


Set the blend mode used for drawing operations (Fill and Line).


int SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode);

Function Parameters

renderer the rendering context
blendMode the SDL_BlendMode to use for blending

Return Value

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


If the blend mode is not supported, the closest supported mode is chosen.


This function is available since SDL 3.0.0.

CategoryAPI, CategoryRender

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