1set_screen_blender(3)           Allegro manual           set_screen_blender(3)
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NAME

6       set_screen_blender  -  Enables a screen blender mode. Allegro game pro‐
7       gramming library.
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SYNOPSIS

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

16       Enables a screen blender mode for combining translucent  or  lit  true‐
17       color  pixels. This blender mode lightens the colour of the destination
18       image by multiplying the inverse of the source and destination colours.
19       Sort of like the opposite of the multiply blender mode.
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SEE ALSO

23       set_trans_blender(3), drawing_mode(3)
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27Allegro                          version 4.2.3           set_screen_blender(3)