Question Play space inconsistencies with OpenXR

Hello,
Recently converted my game to OpenXR, I and many of my players are reporting strange issues with play space positioning in SteamVR.

Issue 1: Playspace is high above the floor

The play space floor is well above where it should be, around 1 room hight of where expected. This happens on the first play-through if the room setup was done, or the headset was asleep during launch. It will go away if the game is restarted.

Issue 2: Seated / standing play mode positions player in the corner of VRrig play area
If SteamVR room setup is set to a standing play area (no guardian setup) then the game will position the player in the lower-left corner of the play space and assumes that is the center. This does not happen if room-scale is setup. Also seems to go away if the game or steamvr is restarted.

Issue 3: Height calibration ignored, headset at floor level
Reported with Valve Index, using SteamVR standing setting - headset spawns at the VR floor. Headset and controller tracking all works, it just seems the headset zero position is at the floor level.

These do not happen when playing from Unity editor, only in the build version.

It's annoying that its hard to reproduce and seems only to happen the first time or after room setup, because its the first time someone is playing the game and will assume its broken all the time.

My XRRig is using Tracking Origin Mode: Floor

Has anyone experienced any of the above?

 

Yes, I'm trying to reproduce these with some consistency, my setup works fine most of the time. I have experienced each of these only once, but after you reset SteamVR it works. But players are reporting the same thing in my discord so hard to ignore it.

 

I am running into the same issue.
The problem is that... in other VR solutions like the SteamVR plugin, there is a clearly defined PlayArea object in SteamVR, which can be placed, and everything is relative to that object. So if I place the playarea at 0, 0, 0... I know that the forward edge of the playarea (in Unity) is about -1.2m, the right edge is 1.5 m, etc
Today I started my OpenXR project and placed my headset in the the middle of my playarea and it said it was at -1.239625, -0.3823971, 0.5121347 in Unity.
... considering these units are measured in meters, this is an extremely large difference, and my players will start in an area where they cannot reach any controls or objects.
OpenXR seems fundamentally broken to me... what do I do?
If I were to guess - It seems to calibrate the center location as the location of the headset at the time when SteamVR launches, rather than a preset, predictable playarea.

 

Hi Apoxol, thank you for the speedy response.

Unity Version 2020.3.15f2 (current LTS, as-of yesterday)
OpenXR Plugin: 1.2.8
XR Plugin Management: 4.0.7

Bug Report Submitted, Case # 1357487
I believe that the issue is that OpenXR is not reading the playarea origin properly from SteamVR, and that you will not see the issue in the enclosed report because my SteamVR is not part of the submitted package.

Here's what I'd like to do...
If you can't find anything wrong in the enclosed package, email me at the address in the bug report. We will set up a time and I can host a Discord Stream, and we can work through it with the live not-working case. I think this is the most likely scenario to speedily resolve the issue because I can reproduce it 100% (at least, right now).

 

Ok I feel stupid now.
I was fiddling with that very control last night, but I never tried "Floor"... the term "floor" just didn't seem to describe the origin I was seeking, so I skipped over it. If it had been named "Playarea Floor" or something like that it would have been the first thing I tried.

In any case, thank you!

 

What do you mean by "uplift"?