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 animation with monitor refresh.

       However, Linux is a multiuser OS, thus some time might have passed already  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-essen.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)