debian man page for set_luminance_blender

set_luminance_blender(3alleg4)					  Allegro manual				    set_luminance_blender(3alleg4)

NAME
       set_luminance_blender - Enables a luminance blender mode. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

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

DESCRIPTION
       Enables a luminance blender mode for combining translucent or lit truecolor pixels. Applies the luminance of the source to the destination.
       The colour of the destination is not affected.

SEE ALSO
       set_trans_blender(3alleg4), drawing_mode(3alleg4)

Allegro 							   version 4.4.2				    set_luminance_blender(3alleg4)