man set_saturation_blender () - Enables a saturation blender mode. Allegro game programming library.
NAME
set_saturation_blender - Enables a saturation blender mode. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
void set_saturation_blender(int r, int g, int b, int a);
DESCRIPTION
Enables a saturation blender mode for combining translucent or lit truecolor pixels. Applies the saturation of the source to the destination image.