Vsync?

I know that Vsync stops texture tearing by preventing framrates from going
about the refresh rate of the monitor.

However I'm a bit unclear as to how this is done. Does it reduce all frame
rates by a certain percentage, (i.e. a both 60fps and 30fps would be
reduced) or does it only reduce the framerate when it rises above the
refresh rate (i.e. on a 60Hz monitor 30fps would stay the same but 70fps
would be reduced)

Cheers,
--
Morgan.
----
* You should *never* miss a chance to help keep a Tory away from power..
It's a moral duty... :- Steve Brooks

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Webpage: http://homepage.ntlworld.com/msales

On Sun, 20 Jul 2003 20:16:48 +0100, "Morgan Sales"
<> wrote:

>However I'm a bit unclear as to how this is done. Does it reduce all frame
>rates by a certain percentage, (i.e. a both 60fps and 30fps would be
>reduced) or does it only reduce the framerate when it rises above the
>refresh rate (i.e. on a 60Hz monitor 30fps would stay the same but 70fps
>would be reduced)
>
Simplifying the definition, it waits for the Vertical Sync signal from
the monitor before rendering the next image. With it disabled you can
get image (not texture) tearing as the image on the monitor can change
part of the way through the scan.

Andrew.

On Mon, 21 Jul 2003 08:05:49 +0100, "Morgan Sales"
<> wrote:

>Cheers. Will enabling it give me and kind of performance hit at lower
>framerates?

Nope, it just stops the framerate exceeding the refresh rate, so it
should be disabled for benchmarking.

Andrew.

aep@nospam writeme.com wrote:
> On Mon, 21 Jul 2003 08:05:49 +0100, "Morgan Sales"
> <> wrote:
>
>> Cheers. Will enabling it give me and kind of performance hit at
>> lower framerates?
>
> Nope, it just stops the framerate exceeding the refresh rate, so it
> should be disabled for benchmarking.

Thanks, very much for the info. And the super fast response.

--
Morgan.
----
* You see in this world there's 10 kinds of people my friend, those who
understand binary, and those who don't.

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On Mon, 21 Jul 2003 22:14:17 GMT, "Mike P" <>
wrote:

>It will hurt gaming pefromance because it will force the refresh rate to a
>multiple of the monitor refresh rate, and if it can't hit 60 (say 58 or so),
>it will drop to the next multiple, 30.
>
Riiiight....whatever.

Andrew.

The effect of V-sync on performance really depends on the system and the
game. If your setup can attain a frame rate of about 70Hz in the game of
interest, then you won't notice much difference one way or another in the
appearance of the game. On the other hand, in a game like Counter-Strike,
the rate at which the gun reticule closes, and thus burst accuracy, is
linked to fps. A faster reticule may give a slight advantage, particularly
in a fast paced game like CS.

I play on an LCD monitor with a max refresh rate of 70Hz. In most games I
play with V-sync on and get a frame rate of 70 with excellent video
performance. In CS, I play with V-sync off and get a frame rate of 100
which is the game limit. Video performance is also excellent.

Bottom line: Experiment with your system while playing the game. Make
changes to give you what you consider to be the best performance. If you
can't get a frame rate which is satisfactory to you, then consider changing
components. Don't obsess over whether it's absolutely wrong or absolutely
right to turn V-sync off. There is no one correct answer.


"Mike P" <> wrote in message
news:ZAZSa.11347$...
> It will hurt gaming pefromance because it will force the refresh rate to a
> multiple of the monitor refresh rate, and if it can't hit 60 (say 58 or
so),
> it will drop to the next multiple, 30.
>
> Mike
>
> <aep@nospam writeme.com> wrote in message
> news:...
> > On Mon, 21 Jul 2003 08:05:49 +0100, "Morgan Sales"
> > <> wrote:
> >
> > >Cheers. Will enabling it give me and kind of performance hit at lower
> > >framerates?
> >
> > Nope, it just stops the framerate exceeding the refresh rate, so it
> > should be disabled for benchmarking.
> >
> > Andrew.
>
>

Frank Weston wrote:
> Bottom line: Experiment with your system while playing the game.
> Make changes to give you what you consider to be the best
> performance. If you can't get a frame rate which is satisfactory to
> you, then consider changing components. Don't obsess over whether
> it's absolutely wrong or absolutely right to turn V-sync off. There
> is no one correct answer.

The reason I asked about Sync is because the tearing is really starting to
irritate me. I've been playing Mafia(which I've just broken by patching it)
and Freelancer for the past two days with V-Sync enabled and it's been
playing great.

Cheers.

--
Morgan.
----
* I don't like being outdoors Smithers, for one thing there are too many fat
children. :- C. M. Burns

Mail:
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On Tue, 22 Jul 2003 20:25:16 GMT, "Mike P" <>
wrote:

>Do a google search and learn. It's a shame people who don't know much about
>a subject are so willing to offer advice.
>
Sorry I just speak from about 8 years high end PC gaming experience. I
will do a search and read posts by numbnuts like you to learn things
in future.

Andrew.

Maybe you should spend less time playing the games and more time learning
the tech stuff before you voice your opinion. And btw, name calling will be
out of style by the time you reach your upper teens.

<aep@nospam writeme.com> wrote in message
news:...
> On Tue, 22 Jul 2003 20:25:16 GMT, "Mike P" <>
> wrote:
>
> >Do a google search and learn. It's a shame people who don't know much
about
> >a subject are so willing to offer advice.
> >
> Sorry I just speak from about 8 years high end PC gaming experience. I
> will do a search and read posts by numbnuts like you to learn things
> in future.
>
> Andrew.