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50 WiVRn

WiVRn

The WiVRn mascot

WiVRn lets you run OpenXR applications on a computer and display them on a standalone headset.

It's very similar in purpose to Monado, but for standalone VR headsets.

Current limitations are a fixed bitrate and network protocol streaming only, please ensure your headset is on a stable network or utilize an ethernet adapter to your headset to operate in a quasi-wired mode.

Should you utilize Envision for WiVRn setup, please ensure your APK and WiVRn server match as closely as possible. Check the WiVRn github actions for an APK matching your server build to install to your headset.

WiVRn + Lighthouse driver

This section covers using WiVRn with any lighthouse-tracked device: Index/Vive controllers, Vive/Tundra trackers, etc. Important steps are marked with 🔴.

🔴 Have SteamVR installed (no need to run it).

🔴 In Envision, set WiVRn Profile as such:

  • XR Service CMake Flags:
    • WIVRN_FEATURE_STEAMVR_LIGHTHOUSE=ON
  • Environment Variables:
    • WIVRN_USE_STEAMVR_LH=1
    • LH_DISCOVER_WAIT_MS=6000

🔴 Perform a Clean Build after changing these!

If not using Envision, simply pass -DWIVRN_FEATURE_STEAMVR_LIGHTHOUSE=ON to cmake and export the env variables before starting wivrn-server.

🔴 Grab Motoc, this can calibrate the two tracking technologies to work together.

Discovery happens only on first connection, so be sure to have all lighthouse devices powered on and in line of sight of base stations before connecting the headset!

Once a device is discovered, it may be powered off and then back on later.

🔴 Once video appears in the headset, check motoc monitor to make sure your devices all show up.

If one or more devices are missing, try:

  • Spread the devices out more; lighthouse devices get discovered quicker if they're not piled up on each other. Simply strapping them on is good, too.
  • Increase LH_DISCOVER_WAIT_MS, though this delays the client on first connection.

To re-discover devices, restart WiVRn server.

At this point, your lighthouse devices will be randomly floating about somewhere. To calibrate them, follow the guide in the Motoc README.