Provided by: allegro4-doc_4.4.2-10_all 

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.
SEE ALSO
set_trans_blender(3alleg4), drawing_mode(3alleg4)
Allegro version 4.4.2 set_saturation_blender(3alleg4)