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vga_waitretrace(3)	      Svgalib User Manual	    vga_waitretrace(3)

NAME
       vga_waitretrace - wait for vertical retrace.

SYNOPSIS
       #include	<vga.h>

       void vga_waitretrace(void);

DESCRIPTION
       Wait  for  vertical  retrace, that is when the video beam goes dark and
       returns from the	bottom line to the top line. Useful to synchronize an-
       imation with monitor refresh.

       However,	 Linux is a multiuser OS, thus some time might have passed al-
       ready when the function returns.	Also, not all cards  support  this  in
       all modes (or with more or less good results).

SEE ALSO
       svgalib(7), vgagl(7), libvga.config(5), scrolltest(6),

AUTHOR
       This  manual page was edited by Michael Weller <eowmob@exp-math.uni-es-
       sen.de>.	The exact source of the	referenced function as well as of  the
       original	documentation is unknown.

       It is very likely that both are at least	to some	extent are due to Harm
       Hanemaayer <H.Hanemaayer@inter.nl.net>.

       Occasionally this might be wrong. I hereby asked	to be excused  by  the
       original	author and will	happily	accept any additions or	corrections to
       this first version of the svgalib manual.

Svgalib	(>= 1.2.11)		 27 July 1997		    vga_waitretrace(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR

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