G-SYNC: Doesn't support 3D mode? (and neither does ULMB?)

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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sofakng
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G-SYNC: Doesn't support 3D mode? (and neither does ULMB?)

Post by sofakng » 23 Jan 2014, 10:49

I'm still fooling around with my G-SYNC monitor but a couple of interesting things...

1) If I enable 3D Vision and then try to enable G-SYNC, it says that Stereoscopic (3D) will be disabled.
2) If I disable G-SYNC and use 120 Hz to play a 3D Vision game, ULMB doesn't work and says it's not supported during "3D Mode".

Has anybody else tested this?

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Chief Blur Buster
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by Chief Blur Buster » 23 Jan 2014, 10:51

sofakng wrote:I'm still fooling around with my G-SYNC monitor but a couple of interesting things...
1) If I enable 3D Vision and then try to enable G-SYNC, it says that Stereoscopic (3D) will be disabled.
It is not possible to use G-SYNC with shutter glasses.
sofakng wrote:2) If I disable G-SYNC and use 120 Hz to play a 3D Vision game, ULMB doesn't work and says it's not supported during "3D Mode".
3D Mode uses LightBoost, which is already a strobed mode like ULMB. So you don't need ULMB during 3D Mode, as 3D Mode has low motion blur already.
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CeeJayII
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by CeeJayII » 23 Jan 2014, 11:37

Is there any difference in the 3D mode before and after you installed G-Sync? Even though you can't technically enable G-sync in 3d, it is theorized that it may reduce pixel inversion artifacts in 3D.

sofakng
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by sofakng » 23 Jan 2014, 12:22

Thanks for the information. I didn't realize LightBoost was being automatically enabled when in 3D mode.

I've only had the monitor for a couple of days before I installed G-SYNC so I didn't get a chance to check 3D before the G-SYNC module was installed for comparison :(

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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by Chief Blur Buster » 23 Jan 2014, 13:26

sofakng wrote:Thanks for the information. I didn't realize LightBoost was being automatically enabled when in 3D mode.
LightBoost was actually originally invented to reduce crosstalk for 3D, but by that nature, it also dramatically lowers the persistence of an LCD screen (LightBoost FAQ) and also eliminates motion blur, which makes it good for 2D.
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by metasparks » 09 Feb 2014, 00:07

I have done the mod to my Asus monitor to have the new Gsync board. But when I go click on Enable Stereoscopic 3D in the nVidia Control Panel, it says "GSync will be disabled. Do you still want to enable Stereoscopic 3D?". That's strange to me because nVidia's website and manual show that 3D Vision is supported by the mod at "superior 3D quality at 100, 120Hz". http://www.nvidia.in/object/how-does-g- ... rk-in.html Does anyone have official word regarding both gsync on with stereoscopic 3D support on? Is it planned? How do I do it? The manual and website seem to infer it should be possible.

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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by metasparks » 09 Feb 2014, 00:11

Chief Blur Buster wrote: It is not possible to use G-SYNC with shutter glasses.
Why? Isn't it supposed to support 3D vision?

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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by RealNC » 09 Feb 2014, 00:37

metasparks wrote:
Chief Blur Buster wrote: It is not possible to use G-SYNC with shutter glasses.
Why? Isn't it supposed to support 3D vision?
Nope, it's not supposed to. It's either G-Sync or 3D Vision. You cannot activate both at the same time. It's unknown whether this will change in the future and, if it does, whether it will require new hardware or just new drivers.

And yeah, I know it's a bummer, since G-Sync would be even more useful with 3D Vision (due to the severe FPS hit by rendering twice). But there's nothing you can do about it.
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by Chief Blur Buster » 09 Feb 2014, 02:04

metasparks wrote:Why? Isn't it supposed to support 3D vision?
G-SYNC monitors support 3D Vision in non-GSYNC mode.

It is not currently (yet) practical to do variable-rate shutter/strobing at the current shutter frequencies that are being done, due to the erratic flicker that would create.

Theoretically, variable-rate strobing in ULMB mode is a much easier engineering challenge. However, that is not currently (yet) being done at the moment.
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Re: G-SYNC: Doesn't support 3D mode? (and neither does ULM

Post by ManuelG_NVIDIA » 13 Feb 2014, 15:29

metasparks wrote:
Chief Blur Buster wrote: It is not possible to use G-SYNC with shutter glasses.
Why? Isn't it supposed to support 3D vision?
In is not on our roadmap in the near future. I can't comment long term.
Please send me a PM if I fail to keep up on replying in any specific thread.

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