OpenXR Motion Compensation

Honestly I don’t know…. with quest 3 controller i just activate it and it works, i install opencomposite to force openxr. Anyway I see that in many things ChatGPT can help, so if you give him the error u are getting maybe u get a possible solution

this is the error:

XR_APILAYER_NOVENDOR_motion_compensation layer (beta - 0.3.9.0 [x64]) is active
Using layer: XR_APILAYER_NOVENDOR_motion_compensation
Cannot satisfy implicit extension request: XR_HTCX_vive_tracker_interaction
Requesting extension: XR_KHR_win32_convert_performance_counter_time
xrCreateInstance
Application: OpenComposite_AMS2AVX
Using OpenXR runtime: Pimax OpenXR 0.1.0


vive tracker (waist) is used as reference tracker
recording of samples is off
error - tracker::ViveTrackerInfo::Init: runtime does not support Vive tracker OpenXR extension: XR_HTCX_vive_tracker_interaction

Using OpenXR system: Pimax Crystal Light
xrDestroyInstance
Using layer: XR_APILAYER_NOVENDOR_motion_compensation
Cannot satisfy implicit extension request: XR_HTCX_vive_tracker_interaction
Cannot satisfy implicit extension request: XR_HTCX_vive_tracker_interaction

log attached

This means:

• The OpenXR Motion Compensation layer (XR_APILAYER_NOVENDOR_motion_compensation) requires the XR_HTCX_vive_tracker_interaction extension to properly detect and use VIVE Trackers.
• However, the Pimax OpenXR runtime (v0.1.0) currently does not support this extension.
• As a result, the motion compensation layer cannot access the VIVE Tracker, even though it’s physically connected and tracked via SteamVR.

✅ Solution




1.

Switch to the SteamVR OpenXR runtime (Recommended)



SteamVR’s OpenXR runtime supports the VIVE Tracker extension and works perfectly with the motion compensation layer.



How to do it:

1. Open SteamVR
2. Go to Settings → Developer
3. Click on “Set SteamVR as OpenXR Runtime”

After this:

• The Motion Compensation layer will work correctly.
• The VIVE Tracker will be properly detected.
• You can continue using your Pimax headset — SteamVR will still handle the tracking and rendering.

✅ This is the most stable and tested setup for motion compensation with VIVE Trackers.


This is what ChatGPT reply …

thats the issue, when " Click on “Set SteamVR as OpenXR Runtime”

it gives this:
current openxr runtime' steam vr; then when running automobilsta through steamvr there is no 10..9... countdown.
I am even using opencompsite to force openXR in steam.

Can u send the screen of opencomposite? And with Pimax play can you launch games?

i now got this error:
: XR_APILAYER_NOVENDOR_motion_compensation layer (beta - 0.3.9.0 [x64]) is active
: Using layer: XR_APILAYER_NOVENDOR_motion_compensation
: xrCreateApiLayerInstance failed with XR_ERROR_RUNTIME_FAILURE

Sure photo of opencomppsite below' it forces both steamvr and AMS2 game;
also i can launch through pimaxplay but i have been launching it through stream; have not tried launching it through pimax play.

Try with Pimax as openxr runtime and launch trough Pimax play

as soon as i switched to pimax xr in the pimplay software and then started the game through there i got a countdown; 5...4... then error sound following by game crash;

the error code was : error - tracker::ViveTrackerInfo::Init: runtime does not support Vive tracker OpenXR extension: XR_HTCX_vive_tracker_interaction

What i then noticed when going into steamvr; the run time was pimax XR; Open composite was still switched to OPEN XR.

I wonder if this would do it;
Unity: Getting Data from VIVE Tracker (SteamVR) | VIVE OpenXR - Developer Resources

Try and read all this: https://chatgpt.com/share/6859dc46-2370-8002-a245-53fe6086c4fc