OpenXR Plugin: Configure with a Varjo HMD

This guide covers configuration of OptiTrack's OpenXR Plugin with a head-mounted device made by Varjo.

Requirements

• Varjo Base

• Motive 3.3 or later

• OptiTrack OpenXR Plugin 1.3.0 or later

Setup

• Complete the step called Setting Up the OpenXR Plugin Config App in the OptiTrack OpenXR Plugin guide.

• Launch Varjo Base and access the Settings tab from the ribbon menu at the top of the application.

  • From this menu, navigate to the System tab in the side window.

  

  • Enable OpenVR and OpenXR using the switches on their menu items in the Compatibility section.

  

Note: If you are using the Varjo OpenXR runtime, you do not need to launch SteamVR to use the OptiTrack OpenXR plugin. This is the method we found most successful.

If you prefer to use SteamVR’s OpenXR runtime with your Varjo headset instead, you can do so by following the step called SteamVR Setup in the OptiTrack OpenXR Plugin guide. The settings in Varjo Base do not need to be adjusted.

When SteamVR is properly configured, the Compatibility section of the system settings in Varjo Base will look like the the image below.

• In the Compatibility section, under the OpenXR API layers menu item, press Open.

  • Then, from the OpenXR API layers window, ensure the XR_APILAYER_OPTITRACK_tracking_override option is enabled.

• Return to the Headset tab from the ribbon menu at the top left corner of the application. The default startup screen should appear.

• The Varjo runtime is now configured with the OptiTrack OpenXR plugin.