From:	"Arthur" <arfa AT clara DOT net>
To:	<djgpp AT delorie DOT com>
Subject:	RE: vsync
Date:	Mon, 12 Oct 1998 15:46:15 +0100
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Reply-To:	djgpp AT delorie DOT com

> On Sun, 11 Oct 1998, Henrik Rydg rd wrote:
>
> > Mark Tsui skrev i meddelandet <6vp6lh$g71$2 AT otis DOT netspace DOT net DOT au>...
> > >when I use vsync in my program, the maximum frame rate is only about 60
> > >frames per second. when I remove the vsync, the program runs
> at 3000 and
> > >something frames per second, however, the graphics looked all
> flickered,
> > how
> > >do I solve this problem?
> > >
> > >Any help will be appreciated.
> > >
> > 60 FPS is about as fast as your eyes can percieve, so that
> shoulnd't be a
>
> I think most films go at 25fps... but I could be wrong.

Yes they do. British TV sets generally run at 50Hz, and US sets go at 60Hz
(I think), but they only show about 20-25fps. Remember, though, that your
peripheral vision (like out of the corner of your eye) is far more sensitive
than the rest of your vision, and so if you look at a monitor out of the
corner of your eye, the flicker is still noticable. Also note the strain a
slow screen rate puts on your eyes. Try looking your monitor when it's
running at 60Hz for a long time, especially if it's only a foot or so in
front of your eyes, and you'll see what I mean.

James Arthur
jaa AT arfa DOT clara DOT net
ICQ#15054819

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