This statement of no OpenXR support is no longer true since I introduced https://github.com/mbucchia/Pimax-OpenXR
The instructions for Pimax remain the same, just need to install this Pimax-OpenXR runtime to use instead of SteamVR.
@nikoel there are too many people who dont understand what WMR is, and they end up following the WMR steps (install portal, dev tools etc) with their Oculus etc. I think you could clarify that on your post.
This video, while recent is largely outdated. This video is using an older version of OC (the original one from Jabbah) and you should pick up the more recent one from the official OC branch here instead: https://gitlab.com/znixian/OpenOVR/-/tree/openxr
Also the incompatibility with newer versions of OpenXR Toolkit is no longer true.
For Pimax users:
1) You need to install OpenComposite the same way that you can find instructions all over the place (replace openvr_api.dll and possibly delete D3DCompiler_47.dll).
2) The new bit is to use my OpenXR runtime for Pimax. https://github.com/mbucchia/Pimax-OpenXR
3) Always make sure that in your game settings like render scale or Pixel Density are set to 100% (aka 1.0). Otherwise things won't work. You will be able to use NIS/FSR in OpenXR Toolkit to do the same thing!