1set_luminance_blender(3)        Allegro manual        set_luminance_blender(3)
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NAME

6       set_luminance_blender  - Enables a luminance blender mode. Allegro game
7       programming library.
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SYNOPSIS

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

16       Enables a luminance blender mode for combining translucent or lit true‐
17       color  pixels.  Applies the luminance of the source to the destination.
18       The colour of the destination is not affected.
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SEE ALSO

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