1set_invert_blender(3)           Allegro manual           set_invert_blender(3)
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NAME

6       set_invert_blender  - Enables an invert blender mode. Allegro game pro‐
7       gramming library.
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SYNOPSIS

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

16       Enables an invert blender mode for combining translucent or  lit  true‐
17       color  pixels.  Blends  the  inverse (or negative) colour of the source
18       with the destination.
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SEE ALSO

22       set_trans_blender(3), drawing_mode(3)
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26Allegro                          version 4.4.3           set_invert_blender(3)