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set_luminance_blender(3)        Allegro manual        set_luminance_blender(3)

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(3), drawing_mode(3)

Allegro                          version 4.4.2        set_luminance_blender(3)