It's now possible to disable vsync when reaching monitor cap

Talk about NVIDIA G-SYNC, a variable refresh rate (VRR) technology. G-SYNC eliminates stutters, tearing, and reduces input lag. List of G-SYNC Monitors.
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RealNC
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It's now possible to disable vsync when reaching monitor cap

Post by RealNC » 18 May 2015, 11:31

Just saw this today in the latest Linux driver release (2015.5.18, 352.09 beta):
Added support for G-SYNC with sync-to-vblank disabled. This allows applications to use G-SYNC to eliminate tearing for frame rates below the monitor's maximum refresh rate but allow tearing above the maximum refresh rate in order to minimize latency.

When G-SYNC is active and sync-to-vblank is enabled, the frame rate is limited to the monitor's maximum refresh rate.
So it's now possible to avoid input-lag when the frame rate reaches the monitor's maximum refresh rate by allowing tearing. This sounds like a good idea, since if you reach 144FPS, tearing would not be very noticeable to begin with.

Was this already supported in Windows? I don't remember this one. If not, I would assume that function will reach Windows users in the next driver release.
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Re: It's now possible to disable vsync when reaching monitor

Post by flood » 18 May 2015, 23:45

yup, as far as latency is concerned, this is pretty much the ideal way to handle things

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lexlazootin
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Re: It's now possible to disable vsync when reaching monitor

Post by lexlazootin » 19 May 2015, 00:41

For me running windows 8.1 and the latest nvidia drivers, it's impossible to get over 144fps because the nvidia drivers will cap it for me when Gsync is enabled.

Edit: I also feel like this transition would be VERY jarring to watch. Not only does Gsync eliminate tearing it also makes you feel like you are getting a much higher fps then you actually are. So it might feel like you are getting ~140hz then suddenly reaching the cap you are getting ~90hz plus tearing.

Might be better if someone just writes a linux program to cap fps :)

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Re: It's now possible to disable vsync when reaching monitor

Post by sharknice » 19 May 2015, 15:36

So did they fix the GSYNC always on thing too? I've been avoiding upgrading because of that.

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Re: It's now possible to disable vsync when reaching monitor

Post by lexlazootin » 20 May 2015, 01:05

sharknice wrote:So did they fix the GSYNC always on thing too? I've been avoiding upgrading because of that.
On windows or linux? in windows there is a tick box that disables it just fine.

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Re: It's now possible to disable vsync when reaching monitor

Post by sharknice » 20 May 2015, 02:48

lexlazootin wrote:
sharknice wrote:So did they fix the GSYNC always on thing too? I've been avoiding upgrading because of that.
On windows or linux? in windows there is a tick box that disables it just fine.
Windows. I don't want to have to uncheck it to turn it off on the desktop.

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Re: It's now possible to disable vsync when reaching monitor

Post by lexlazootin » 20 May 2015, 03:28

sharknice wrote:
lexlazootin wrote:
sharknice wrote:So did they fix the GSYNC always on thing too? I've been avoiding upgrading because of that.
On windows or linux? in windows there is a tick box that disables it just fine.
Windows. I don't want to have to uncheck it to turn it off on the desktop.
Ok, I'm really curious, why don't you want Gsync on the desktop?

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Re: It's now possible to disable vsync when reaching monitor

Post by dmbr » 21 May 2015, 01:36

So wait, is this option available to Windows, too?

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Re: It's now possible to disable vsync when reaching monitor

Post by RealNC » 21 May 2015, 13:06

I don't think g-sync works on the desktop, actually. It only works with exclusive fullscreen applications.
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Re: It's now possible to disable vsync when reaching monitor

Post by RealNC » 21 May 2015, 13:07

dmbr wrote:So wait, is this option available to Windows, too?
He was talking about disabling g-sync altogether. I don't think disabling v-sync when reaching the cap works yet on Windows.
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