Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_SetRenderDrawBlendMode - Set the blend mode used for drawing operations (Fill and Line).
SYNOPSIS
#include <SDL3/SDL_render.h>
bool SDL_SetRenderDrawBlendMode(SDL_Renderer *renderer, SDL_BlendMode blendMode);
DESCRIPTION
If the blend mode is not supported, the closest supported mode is chosen.
FUNCTION PARAMETERS
renderer
the rendering context.
blendMode
the SDL_BlendMode to use for blending.
RETURN VALUE
for more information.
THREAD SAFETY
This function should only be called on the main thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
SDL_GetRenderDrawBlendMode(3)
Simple Directmedia Layer SDL 3.2.20 SDL_SetRenderDrawBlendMode(3)