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vsync(3)			Allegro	manual			      vsync(3)

NAME
       vsync - Waits for a vertical retrace to begin. Allegro game programming
       library.

SYNOPSIS
       #include	<allegro.h>

       void vsync();

DESCRIPTION
       Waits for a vertical retrace to begin. The  retrace  happens  when  the
       electron	 beam in your monitor has reached the bottom of	the screen and
       is moving back to the top ready for another scan. During	this short pe-
       riod  the  graphics  card isn't sending any data	to the monitor,	so you
       can do things to	it that	aren't possible	at other times,	such as	alter-
       ing  the	 palette without causing flickering (snow). Allegro will auto-
       matically wait for a retrace before altering the	palette	or  doing  any
       hardware	 scrolling,  though, so	you don't normally need	to bother with
       this function.

SEE ALSO
       set_palette(3), scroll_screen(3)

Allegro				 version 4.4.2			      vsync(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

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