Re: FPS in FullScreen vs. Windowed

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Jeff (a_at_a.com)
Date: 04/06/04 

Date: Mon, 5 Apr 2004 17:59:47 -0700

Is turning off VSYNC really the best solution? From what I've heard it's
not good because you see tearing. If you turn it off how do you prevent
tearing?

"Philip Taylor [ATI]" <ptaylor@online.newsgroup-poster.ati.com> wrote in
message news:OAHcfT1GEHA.3592@TK2MSFTNGP10.phx.gbl...
> its called VSYNC.
>
> in fullscreen mode you are synced to vertical refresh rate.
>
> try disabling VSYNC.
>
> "Jeff" <a@a.com> wrote in message
> news:OuiFfuzGEHA.2708@TK2MSFTNGP11.phx.gbl...
> > When I run the C# Billboard sample in fullscreen mode I can only get up
to
> > 60fps but in windowed mode it's upwards of 200fps. Why is there such a
> big
> > discrepancy?
> >
> > I'm running on Windows XP with a GeForce4 Ti 4200 8X 128MB with a 75
Hertz
> > refresh rate.
> >
> > The reason that I am asking is not because I want insanely high fps, but
> > because I was hoping to cap the fps and utilize any left over processor
> time
> > for AI, etc. Based off how this is running, however, I'm assuming that
> I'm
> > just wasting CPU cycles just sitting there waiting for a vsync.
> >
> > If my assumption is right, how would I correct this?
> >
> > If my assumption is not right, can you please explain how it really
works?
> >
> > Thanks in advance!
> >
> >
>
>

Relevant Pages

  • Re: WGL_EXT_swap_control System Requirements
    ... Vsync makes no difference if you're running at 25 fps. ... In fact disabling it might actually make things look worse ... by introducing visible "tearing" of the image by updating ... entries but I know for a fact that more Intel chips can do it. ...
    (comp.graphics.api.opengl)
  • Re: FPS in FullScreen vs. Windowed
    ... in fullscreen mode you are synced to vertical refresh rate. ... try disabling VSYNC. ... > The reason that I am asking is not because I want insanely high fps, ...
    (microsoft.public.win32.programmer.directx.managed)
  • Re: Upgrade to 8800 GTS 512 - More Sizzle than Steak?
    ... so you never really get the true experience without a good CRT. ... And you get tearing on CRT's if vsync is off also and triple buffering ...
    (comp.sys.ibm.pc.games.action)
  • Re: wow - 30% frame rate drop caused by vsync!
    ... >game on your PC can pump out a steady 72 fps with vsync off. ... >vsync and your refresh rate is 60Hz, ... This is where "Triple Buffering" is so useful. ... Some games ...
    (comp.sys.ibm.pc.games.action)
  • Re: SHIII: Video Option: Synchronize?
    ... I've never seen the problem myself, but some gamers report seeing video smearing or tearing artifacts with some games unless v-sync is engaged. ... It's your video card that changes it's frame rate rather than your monitor changing it's refresh rate. ... VSYNC is basically the synchronizing of buffer swaps with your monitor's refresh rate. ... What happens is that this allows the buffer swapping to occur without synchronizing with the monitor's refresh rate. ...
    (comp.sys.ibm.pc.games.naval)