DOKK / manpages / debian 11 / allegro4-doc / set_saturation_blender.3alleg4.en
set_saturation_blender(3alleg4) Allegro manual set_saturation_blender(3alleg4)

set_saturation_blender - Enables a saturation blender mode. Allegro game programming library.

#include <allegro.h>

void set_saturation_blender(int r, int g, int b, int a);

Enables a saturation blender mode for combining translucent or lit truecolor pixels. Applies the saturation of the source to the destination image.

set_trans_blender(3alleg4), drawing_mode(3alleg4)

version 4.4.3 Allegro