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Other Graphics Cards and 3D Technologies Discussion forum for any graphics hardware not provided by AMD/ATI. Also place to discuss 3D technologies such as 3D Stereo, PhysX and other interesting developments/rumours in the 3D industry.

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Old Sep 15, 2018, 10:11 AM   #1
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Destroy
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Default Will 8k VR be the salvation?

Watching some videos, it seems to be what everyone wanted in the first place.

But they are talking needing one 1080 minimum for each screen?! Yikes!
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Old Sep 15, 2018, 11:32 AM   #2
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If anyone was expecting 8k VR ( i bet is really 4k for each eye) on a medium range current GPU then they don't know anything about how computers and resolutions work.
Today's even high end GPU's from both vendors have problems rendering 4k at constant 90 fps in the most modern demanding games, imagine needing to render 4k for each eye at the same time, at constant 90fps!

And IMO VR enthusiasts will lose with more expensive VR kits, because the less kits sold, the less game developers will want to make games for them, and the fewer games, less kits are sold, chicken and egg problem, the one that has stopped VR from growing for years now.
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Old Sep 15, 2018, 12:29 PM   #3
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Originally Posted by Argoon1981 View Post
If anyone was expecting 8k VR ( i bet is really 4k for each eye) on a medium range current GPU then they don't know anything about how computers and resolutions work.
Today's even high end GPU's from both vendors have problems rendering 4k at constant 90 fps in the most modern demanding games, imagine needing to render 4k for each eye at the same time, at constant 90fps!

And IMO VR enthusiasts will lose with more expensive VR kits, because the less kits sold, the less game developers will want to make games for them, and the fewer games, less kits are sold, chicken and egg problem, the one that has stopped VR from growing for years now.
Wasn't foveated rendering supposed to save the day? What happened to it?
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Old Sep 15, 2018, 01:38 PM   #4
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Current mainstream headsets are only 1080x1200 per an eye. Good enough for a fun experience, but higher would be a definite improvement.

I think about 4k per an eye would be ideal.

Some things that should help reduce the workload.
1) The lenses make it so the effective PPI you actually see is non-uniform (see image below). This means that the GPU can render some areas of the image at lower than the native resolution while presenting an effectively uniform resolution to the user looking through the lenses. Nvidia already has tech in their GPU to do this.
2) The headsets don't actually use the full area of the display, so the GPU isn't actually rendering a full 1080x1200 per an eye (see image below).
3) Oculus and Vive can warp images to keep the environment moving when the GPU misses a frame. It isn't perfect, but it is good enough to prevent obvious stuttering and motion sickness.
4) The renderings for the two eyes can share some of the same work. This is what Nvidia's simultaneous multi-projection does (BTW, both Unreal and Unity support SMP, so there are at least a few games out their using this feature)
5) Games can use trade other rendering quality improvements for resolution.
6) The rendering can be done at a lower resolution and upscaled, which would still help reduce the screen door effect.

BTW, most VR games currently run alright on a GTX 1060. The 1080 Ti has well over twice the pixel pushing power and many VR users with high end GPU already use as high as 2x super sampling (which amounts to rendering 2160x2400 per an eye.)

I expect that in a couple more years, 4k per an eye will be doable with the top tier GPU. I am less certain about



P.S. I am not sure why VR needs salvation. It seems like the state of VR is pretty healthy and getting better all the time.
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Old Sep 15, 2018, 02:32 PM   #5
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As for the health of VR, It looks like after a bit of a flat period, there has been an uptick in VR headset use, according to the Steam Hardware survey.

For a point of comparison, the 0.72% is about half the adoption rate of 4k; but only includes people that have their headsets plugged in during the survey, and many people don't keep them plugged in when not in use.

(data sourced from the Internet Archive: Wayback Machine)


Edit: adding link for top selling VR games of 2018. There are some pretty fantastic games on this list, which doesn't even include Oculus exclusives.
https://store.steampowered.com/sale/...top_vr_titles/
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Old Sep 15, 2018, 09:56 PM   #6
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Resolution isn't my largest gripe by a long shot. If anything the lenses are the weak link on my rift. The godrays and fog are far, far more of an issue than sde. And to be honest annoy me more than stereoscopic 3d crosstalk ever did. Nevermind wires and needing a **** ton of dedicated space. I don't want this much hassle to play a damn video game. Every gripe about stereoscopic 3d is far worse with the occulus rift imo. I have never been able to relax and just enjoy the the thing for any somewhat extended period of time after the initial shock value wore off. I got more use and enjoyment out of Nvidia 3d vision.

This **** is so far off from mainstream adoption that it isn't even funny. If the enthusiast hardware is this lackluster I can't even imagine what options the mainstream headsets and software are leaving people with.

I'm sorry. I just get annoyed seeing people gripe about what I consider to be the least of my concerns with VR and no one mentioning the immersion breaking, frustrating issues. I don't want to empty out a large room to set up for VR so I can trip over cords while looking at a screen that's fogged up and has halos around anything on a dark background.

Like 3d vision the more that you use it the more obvious the flaws. Sadly they're far more consistent than I ever dealt with in 3d vision and there is far fewer software to enjoy.
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Old Sep 15, 2018, 11:02 PM   #7
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Originally Posted by BababooeyHTJ View Post
Resolution isn't my largest gripe by a long shot. If anything the lenses are the weak link on my rift. The godrays and fog are far, far more of an issue than sde. And to be honest annoy me more than stereoscopic 3d crosstalk ever did. Nevermind wires and needing a **** ton of dedicated space. I don't want this much hassle to play a damn video game. Every gripe about stereoscopic 3d is far worse with the occulus rift imo. I have never been able to relax and just enjoy the the thing for any somewhat extended period of time after the initial shock value wore off. I got more use and enjoyment out of Nvidia 3d vision.

This **** is so far off from mainstream adoption that it isn't even funny. If the enthusiast hardware is this lackluster I can't even imagine what options the mainstream headsets and software are leaving people with.

I'm sorry. I just get annoyed seeing people gripe about what I consider to be the least of my concerns with VR and no one mentioning the immersion breaking, frustrating issues. I don't want to empty out a large room to set up for VR so I can trip over cords while looking at a screen that's fogged up and has halos around anything on a dark background.

Like 3d vision the more that you use it the more obvious the flaws. Sadly they're far more consistent than I ever dealt with in 3d vision and there is far fewer software to enjoy.
I've spent hours and hours in VR at my friends houses and have no idea what you're talking about. God rays and fogging? I never noticed any of that on the Windows MR unit I was using. The only issue I had was the resolution. The screen door effect is so bad I won't even consider buying one until that's gone or not noticeable.
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Old Sep 16, 2018, 12:21 AM   #8
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Originally Posted by OverclockN' View Post
I've spent hours and hours in VR at my friends houses and have no idea what you're talking about. God rays and fogging? I never noticed any of that on the Windows MR unit I was using. The only issue I had was the resolution. The screen door effect is so bad I won't even consider buying one until that's gone or not noticeable.
I know what he is talking about, though I don't normally have problems with fogging.

I think the fogging issue is highly dependent on the biology of the user, the relative humidity level in the room, the temperature of the room, and how hard the user is working.

I don't typically notice the god rays in most normal game play, though it can be noticeable with a very bright object or text on a black background.

For me, neither of these issues are at the top of my list. Wires might be the top thing for me, followed by the need to sweep the play space for stray lego bricks.
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Old Sep 16, 2018, 02:18 AM   #9
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P.S. I am not sure why VR needs salvation. It seems like the state of VR is pretty healthy and getting better all the time.
It's some weird modern thing. If something doesn't revolutionize the whole world in less than half a decade it's a "failure" or a "gimmick". VR was always going to be a slow burn.

For me I've only had issues with fogging when the headset is cold and I'm hot. For example if I workout and then strap the headset on immediately. Kind of the same reason your car windshield fogs up, a mismatch in temperatures on each side of the glass.

God rays and all that other stuff is annoying, but for the most part doesn't bother me. I do think the SDE is one of the worst aspects, even on a Vive Pro. But VR's biggest problem is the cost, and actually the price of Nvidia's new graphics cards bodes worst for VR than anything else. We really need the price of VR hardware to go down, not go up or stay the same.
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Old Sep 16, 2018, 06:06 AM   #10
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I really think that horror games work amazingly well in VR. Sadly those games tend to be God Ray city. Occulus actually even published a black and white game. They're awful in Wilson's heart. Robo recall obviously didn't have God Ray issues. But even the dark areas in serious Sam have these artifacts. They're pretty common in my experience on the rift.
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Old Sep 16, 2018, 01:39 PM   #11
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This seems to be a very thorough review.

Yay, distortion ( at 8:30) is worse now, 8k version is a fake, its scaled up since max input res is 1440p...
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Old Sep 16, 2018, 04:45 PM   #12
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