Vertical distance between eyes

Question

Vertical distance between eyes

galister opened this issue 2 years ago · 15 comments

Hi, I'm having an issue where there's a significant vertical difference between the eyes, as if there was a vertical component to the IPD.

In an upright orientation, the right eye is lower, while the left eye is higher. It's not pleasant to look at 😅

The best way I can explain is imagine tilting your head to the right by ~45 degrees, and then using the positions of your eyes from that pose for the upright position. At least this is what it looks like to me. The images are in the correct orientation.

This does not occur when using with Windows.

What I've tried so far:

SteamVR beta / stable / linux_v1.14
forcing settings via steamvr.vrsettings, like ipd, ipdOffset
replace the LibLensDistortion.dll from the Vive Console (in case there has been an update)
lighthouse_console.exe downloadconfig under Windows and put that as config.json under the Linux SteamVR's config/lighthouse.

Answer 1 · 2022-08-31T16:00:15.000Z

Ehh?.. Are u sure eyes aren't just switched left-right? :D
Because I can't imagine what even can lead to this result for now

Answer 2 · 2022-08-31T16:59:34.000Z

Can't really tell. How would you go about un-switching the eyes? force a negative ipd value?

Answer 3 · 2022-08-31T17:05:06.000Z

No, changing ipd won't help
You need to toggle this condition to make it work:
https://github.com/CertainLach/VivePro2-Linux-Driver/blob/master/bin/driver-proxy/src/hmd.rs#L77

- if eEye == EVREye::Eye_Left
+ if eEye != EVREye::Eye_Left

(If you are patron, then you can write in messages on patreon, and I'll build driver with this change for you)

Answer 4 · 2022-09-07T11:45:22.000Z

No luck, the vertical offset is still very much there, except things are way trippier now. I'll try and poke around more when I have time. Would welcome any tips though, if you can think of anything.

This HMD has actually had both LCD panels replaced through RMA, so that might have something to do with it.

Answer 5 · 2022-09-07T12:59:16.000Z

I tried changing the calls to lens.matrix_needs_inversion() to flat false, and the distortion issue is gone.

https://github.com/CertainLach/VivePro2-Linux-Driver/blob/master/bin/driver-proxy/src/hmd.rs#L108

https://github.com/CertainLach/VivePro2-Linux-Driver/blob/master/bin/driver-proxy/src/hmd.rs#L127

However, now I only see back faces, and things look really weird. But at least it's comfortable to look at.

Answer 6 · 2022-09-07T14:05:53.000Z

Oh, then your image was upside down, because matrix inversion swaps faces and makes image upside-down!

Answer 7 · 2022-09-07T14:07:27.000Z

Can you share logs and Config.json from original driver running on windows? Maybe at RMA they have placed LCD panels other way, and there is some changed config fields to look at
Logs and Config.json should be located in C:/ProgramData/HTC

Answer 8 · 2022-09-07T14:09:34.000Z

Meanwhile, you can only change GetProjectionRaw, and then everything should be ok for you

Answer 9 · 2022-09-07T14:13:47.000Z

It is hard to understand logic regarding inversions in the original driver and mine matrix_needs_inversion function only implements how it should look in my opinion, not the correct code for handling this

Answer 10 · 2022-09-08T12:27:43.000Z

WaveConsole_20220906_140452_38472.txt
Config.json.txt

Here's the config. Vastly different than the one I got via lighthouse_console.exe downloadconfig

Answer 11 · 2022-09-08T12:56:24.000Z

I'm not sure, what lighthouse_console.exe downloads, but I think it returns valve config (https://github.com/CertainLach/VivePro2-Linux-Driver/blob/master/crates/vive-hid/src/lib.rs#L100-L133), and not htc one (https://github.com/CertainLach/VivePro2-Linux-Driver/blob/master/crates/vive-hid/src/lib.rs#L251-L287)

htc config contains everything from valve config, except some fields, plus lens configuration
I think valve config exists for backwards compatibility (But this compatibility is not implemented on the steamvr side)

Answer 12 · 2022-09-18T01:20:54.000Z

I've tried changing the inversions with all kinds of combinations, and i either get the front faces culled (sometimes with usable eye positions) or the eye positions with the vertical difference :(

Answer 13 · 2022-10-22T14:37:41.000Z

Can you capture the image from headset, so I can make sure I understand what's happening, and maybe provide some solution?
OBS will do

Answer 14 · 2022-10-22T17:41:16.000Z

It's being RMA'd for the screen (for the 2nd time), I'm getting it back next week. Will let you know if it's still an issue, and try to get a mirror capture or the sorts.

Answer 15 · 2022-10-24T17:46:56.000Z

hi, looks much better with the replaced panels, there's no more vertical difference between the eyes.

there's slightly more distortion near the edges than on windows, but it's not bothering me much. let me know if you're interested in the configs for development's sake.