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set_alpha_blender(3)		 Allegro manual 	    set_alpha_blender(3)

NAME
     set_alpha_blender	- Enables a special alpha-channel blending mode. Allegro
     game programming library.

SYNOPSIS
     #include <allegro.h>

     void set_alpha_blender();

DESCRIPTION
     Enables the special alpha-channel blending mode, which is used for  drawing
     32-bit   RGBA   sprites.	After	calling   this	function,  you	can  use
     draw_trans_sprite() or draw_trans_rle_sprite() to draw a 32-bit source  im-
     age  onto	any  hicolor  or truecolor destination. The alpha values will be
     taken directly from the source graphic, so you can  vary  the  solidity  of
     each  part of the image. You can't use any of the normal translucency func-
     tions while this mode is active, though, so you should reset to one of  the
     normal  blender  modes  (eg.  set_trans_blender())  before drawing anything
     other than 32-bit RGBA sprites.

SEE ALSO
     set_trans_blender(3),    draw_trans_sprite(3),    draw_trans_rle_sprite(3),
     set_write_alpha_blender(3), exalpha(3), exrotscl(3), extrans(3)

Allegro 			  version 4.4.3 	    set_alpha_blender(3)

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