php man page for set_burn_blender

set_burn_blender(3alleg4)					  Allegro manual					 set_burn_blender(3alleg4)

NAME
       set_burn_blender - Enables a burn blender mode. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

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

DESCRIPTION
       Enables a burn blender mode for combining translucent or lit truecolor pixels. Here the lightness values of the colours of the source image
       reduce the lightness of the destination image, darkening the image.

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

Allegro 							   version 4.4.2					 set_burn_blender(3alleg4)