1vga_waitretrace(3)            Svgalib User Manual           vga_waitretrace(3)
2
3
4

NAME

6       vga_waitretrace - wait for vertical retrace.
7

SYNOPSIS

9       #include <vga.h>
10
11       void vga_waitretrace(void);
12
13

DESCRIPTION

15       Wait  for  vertical  retrace, that is when the video beam goes dark and
16       returns from the bottom line to the top  line.  Useful  to  synchronize
17       animation with monitor refresh.
18
19       However,  Linux  is  a  multiuser  OS, thus some time might have passed
20       already when the function returns. Also, not all cards support this  in
21       all modes (or with more or less good results).
22
23

SEE ALSO

25       svgalib(7), vgagl(7), libvga.config(5), scrolltest(6),
26
27

AUTHOR

29       This  manual  page  was  edited by Michael Weller <eowmob@exp-math.uni-
30       essen.de>. The exact source of the referenced function as  well  as  of
31       the original documentation is unknown.
32
33       It is very likely that both are at least to some extent are due to Harm
34       Hanemaayer <H.Hanemaayer@inter.nl.net>.
35
36       Occasionally this might be wrong. I hereby asked to be excused  by  the
37       original author and will happily accept any additions or corrections to
38       this first version of the svgalib manual.
39
40
41
42Svgalib (>= 1.2.11)              27 July 1997               vga_waitretrace(3)