1al_set_separate_blender(3) Library Functions Manual al_set_separate_blender(3)
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NAME

6       al_set_separate_blender
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SYNOPSIS

9              #include <allegro5/allegro.h>
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11              void al_set_separate_blender(int op, int src, int dst,
12                 int alpha_op, int alpha_src, int alpha_dst)
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DESCRIPTION

15       Like al_set_blender(3), but allows specifying a separate blending oper‐
16       ation for the alpha channel.  This is useful if your target bitmap also
17       has  an alpha channel and the two alpha channels need to be combined in
18       a different way than the color components.
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SEE ALSO

21       al_set_blender(3), al_get_blender(3), al_get_separate_blender(3)
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25Allegro reference manual                            al_set_separate_blender(3)