set_hue_blender - Man Page

#include <allegro.h>

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

Enables a hue blender mode for combining translucent or lit truecolor  pixels. This applies the hue of the source to the destination.

set_trans_blender(3), drawing_mode(3)

set_trans_blender(3).