###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_SetRenderDrawBlendMode Set the blend mode used for drawing operations (Fill and Line). ## Syntax ```c int SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode); ``` ## Function Parameters | | | | ----------------- | ------------------------------------------------------ | | **renderer** | the rendering context | | **blendMode** | the [SDL_BlendMode](SDL_BlendMode) to use for blending | ## Return Value Returns 0 on success or a negative error code on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks If the blend mode is not supported, the closest supported mode is chosen. ## Version This function is available since SDL 3.0.0. ## Related Functions * [SDL_GetRenderDrawBlendMode](SDL_GetRenderDrawBlendMode) * [SDL_RenderLine](SDL_RenderLine) * [SDL_RenderLines](SDL_RenderLines) * [SDL_RenderPoint](SDL_RenderPoint) * [SDL_RenderPoints](SDL_RenderPoints) * [SDL_RenderRect](SDL_RenderRect) * [SDL_RenderRects](SDL_RenderRects) * [SDL_RenderFillRect](SDL_RenderFillRect) * [SDL_RenderFillRects](SDL_RenderFillRects) ---- [CategoryAPI](CategoryAPI), [CategoryRender](CategoryRender)