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Stumbled upon almighty god rays

flibberflops
Level 5
When I purchased my CV1, I also splashed out on a mega PC / Nvidia 1080 Upgrade. For over a year I have had no issues with this PC / Rift combo.

 Over the weekend I dug out my old PC / Nvidia 980 which had been gathering dust. I wiped the hard drive, re-installed W10, latest Nvidia drivers and stuck on the Rift software. It all works fine but when I jumped into VR I was surprised to find that the rift has a terrible bright washed out image with the worst god rays you can imagine!!!!

 Obviously plugging the rift back into the 1080 the display looks fine again.

 So I have two PC's, both running the same Nvidia driver, both using the same headset... however one has a much worse VR display experience than the other. The rift on the 980 looks like the brightness is turned up way too high. This would explain why some uses have a really poor experience and natrually blame the rift?

 To be honest I am not sure how to fix my 980. I tried using a 3 month old Nvidia driver (clean install) but this makes no difference. The OS is a basic Win 10 image with just the relevent mobo drivers. I have no other software install except the Oculus software. The nvidia panel doesn't give any options to adjust the settings on the rift either.

 Any ideas what I can change on this basic PC build that will darken the Oculus output?
12 REPLIES 12

74Loki
Level 4
I have a 980ti sc and I see them but it's, for the most part, been when it was a black background with white lettering. The only other time I've seen them was in Eurotruck simulator 2 on road sign lettering when the sun was at an angle creating glare. That's the only time I can recall having them in any game. My dynamic range is set to full.

2ndLastJedi
Level 4


Yes, it's very hard to make objective comparisons because the geometry of everyone's faces is different, leading to different optical quirks. And everyone's eyes are different too. The same headset and GPU set up might look great to one person and terrible to another. And, despite support requesting it when they were discussing my issues, photographic evidence doesn't really work. Jamming a phone/camera into the headset doesn't not give an accurate representation of the focus/brightness/godray issues ones eyes might be perceiving.

But it is of course possible that the variety of optical issues we're hearing about might be down to actual variance between headsets. And because very few of us have a broad frame of reference of having compared dozens of headsets, when we raise the issue and hear others subjectively state that there is no problem, some will probably just accept that that's how it is - as they have no experience to inform them that the display could indeed be better. And those that don't accept it will have difficulty presenting objective evidence of their problem.

I've tried 2 headsets so far. And the focus issue and godrays was the same in both.

I'm popping round a friends later today to try his Rift in Elite Dangerous - he claims he's getting crystal clear visuals. If when I try it I see the same level of blurriness/godray as my headset, this will tell me that the issue is entirely down to my subjective perception.

I'll also try my headset on his set up though. I'm still very curious about the possible variance in brightness/contrast/godrays using the same headset on different GPUs. That's something I had not considered a factor.

But I'm sure I've read of people moving between 980s and 1080s and the comparative differences they do mention are nothing to do with brightness/godrays etc.

Hmmm...




You didnt report back with findings from your friends Rift !
Did his setup still have the same glare ?
Is it a personal thing that some notice and some dont?

LZoltowski
Volunteer Moderator
Volunteer Moderator




Yes, it's very hard to make objective comparisons because the geometry of everyone's faces is different, leading to different optical quirks. And everyone's eyes are different too. The same headset and GPU set up might look great to one person and terrible to another. And, despite support requesting it when they were discussing my issues, photographic evidence doesn't really work. Jamming a phone/camera into the headset doesn't not give an accurate representation of the focus/brightness/godray issues ones eyes might be perceiving.

But it is of course possible that the variety of optical issues we're hearing about might be down to actual variance between headsets. And because very few of us have a broad frame of reference of having compared dozens of headsets, when we raise the issue and hear others subjectively state that there is no problem, some will probably just accept that that's how it is - as they have no experience to inform them that the display could indeed be better. And those that don't accept it will have difficulty presenting objective evidence of their problem.

I've tried 2 headsets so far. And the focus issue and godrays was the same in both.

I'm popping round a friends later today to try his Rift in Elite Dangerous - he claims he's getting crystal clear visuals. If when I try it I see the same level of blurriness/godray as my headset, this will tell me that the issue is entirely down to my subjective perception.

I'll also try my headset on his set up though. I'm still very curious about the possible variance in brightness/contrast/godrays using the same headset on different GPUs. That's something I had not considered a factor.

But I'm sure I've read of people moving between 980s and 1080s and the comparative differences they do mention are nothing to do with brightness/godrays etc.

Hmmm...




You didnt report back with findings from your friends Rift !
Did his setup still have the same glare ?
Is it a personal thing that some notice and some dont?

The god rays are inherent artefacts of using Fresnel Lenses, which all gen 1 HMD's have. They are more visible if your face shape is pushing the lenses further out from your eyes. For me, buying a replacement faceplate (from VR Cover) that has a thinner padding, brought my eyes closer to the lenses, this moved the god rays further out to the edges and slightly increased my FOV.

Also after using the rift for over a year, you get used to it and hardly notice it
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