1makeacol(3)                     Allegro manual                     makeacol(3)
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NAME

6       makeacol,  makeacol_depth - Converts RGBA colors into display dependent
7       pixel formats. Allegro game programming library.
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SYNOPSIS

10       #include <allegro.h>
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13       int makeacol(int r, int g, int b, int a);
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15       int makeacol_depth(int color_depth, int r, int g, int b, int a);
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DESCRIPTION

18       Convert RGBA colors into display dependent pixel formats.  In  anything
19       less  than  a  32-bit  mode, these are the same as calling makecol() or
20       makecol_depth(), but by using these routines it is possible  to  create
21       32-bit  color values that contain a true 8 bit alpha channel along with
22       the red, green, and blue components. You should only  use  RGBA  format
23       colors  as  the input to draw_trans_sprite() or draw_trans_rle_sprite()
24       after calling set_alpha_blender(), rather than drawing them directly to
25       the screen.
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RETURN VALUE

28       Returns the requested RGBA quadruplet.
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SEE ALSO

32       makecol(3),           makecol_depth(3),           set_alpha_blender(3),
33       set_write_alpha_blender(3)
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37Allegro                          version 4.2.3                     makeacol(3)
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