SDL_SetRenderDrawBlendMode

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

Syntax

int SDL_SetRenderDrawBlendMode(SDL_Renderer * renderer,
                               SDL_BlendMode blendMode);

renderer	the rendering context
blendMode	the SDL_BlendMode to use for blending

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.

: SDL_GetRenderDrawBlendMode; SDL_RenderDrawLine; SDL_RenderDrawLines; SDL_RenderDrawPoint; SDL_RenderDrawPoints; SDL_RenderDrawRect; SDL_RenderDrawRects; SDL_RenderFillRect; SDL_RenderFillRects