1set_difference_blender(3)       Allegro manual       set_difference_blender(3)
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NAME

6       set_difference_blender  -  Enables  a  difference blender mode. Allegro
7       game programming library.
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SYNOPSIS

10       #include <allegro.h>
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13       void set_difference_blender(int r, int g, int b, int a);
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DESCRIPTION

16       Enables a difference blender mode  for  combining  translucent  or  lit
17       truecolor  pixels.  This makes an image which has colours calculated by
18       the difference between the source and destination colours.
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SEE ALSO

22       set_trans_blender(3), drawing_mode(3)
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26Allegro                          version 4.2.3       set_difference_blender(3)