1desktop_color_depth(3)          Allegro manual          desktop_color_depth(3)
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NAME

6       desktop_color_depth  -  Finds out the desktop color depth. Allegro game
7       programming library.
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SYNOPSIS

10       #include <allegro.h>
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13       int desktop_color_depth();
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DESCRIPTION

16       Finds out the currently selected desktop color depth. You can use  this
17       information  to make your program use the same color depth as the desk‐
18       top, which will likely make it run faster because  the  graphic  driver
19       won't be doing unnecessary color conversions behind your back.
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21       Under some OSes, switching to a full screen graphics mode may automati‐
22       cally change the desktop color depth. You have, therefore, to call this
23       function before setting any graphics mode in order to retrieve the real
24       desktop color depth. Example:
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26          allegro_init();
27          ...
28          if ((depth = desktop_color_depth()) != 0) {
29             set_color_depth(depth);
30          }
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RETURN VALUE

33       Returns the color depth or zero on platforms where this information  is
34       not available or does not apply.
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SEE ALSO

38       get_desktop_resolution(3), set_color_depth(3), set_gfx_mode(3)
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42Allegro                          version 4.2.3          desktop_color_depth(3)
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