DOKK / manpages / debian 11 / allegro5-doc / al_set_bitmap_blender.3alleg5.en
al_set_bitmap_blender(3alleg5) al_set_bitmap_blender(3alleg5)

al_set_bitmap_blender - Allegro 5 API

#include <allegro5/allegro.h>
void al_set_bitmap_blender(int op, int src, int dest)
    

Sets the function to use for blending when rendering to the target bitmap. If no blender is set for a given bitmap at draw time, the values set for al_set_blender(3alleg5)/al_set_separate_blender(3alleg5) are used instead.

To use separate functions for chroma (RGB) and alpha channels, use al_set_separate_bitmap_blender(3alleg5).

See al_set_blender(3alleg5) for more information about how blending works.

al_set_separate_bitmap_blender(3alleg5), al_reset_bitmap_blender(3alleg5)

5.2.5

[Unstable API]: New API.

Allegro reference manual