Running OpenVR without a headset

On Windows, you can use a mock OpenVR component to run some basic WebXR functionality in Chrome without connecting a VR headset. This can be useful for reproing and investigating WebXR bugs without as much setup required.

Replace out\debug with wherever your build output is going. This assumes Chrome checkout is in c:\src\chromium\src

  1. Build the mock openvr:
autoninja -C out\debug openvr_mock
  1. Set environment variables so we use the mock openvr
set VR_OVERRIDE=C:\src\chromium\src\out\debug\mock_vr_clients\
set VR_CONFIG_PATH=C:\src\chromium\src\out\debug
set VR_LOG_PATH=C:\src\chromium\src\out\debug
  1. Run Chrome with WebXR and OpenVR enabled, but WMR disabled.
out\debug\chrome.exe --enable-features="WebXR,OpenVR" --disable-features="WindowsMixedReality"

  1. Navigate to a test page, by going to this index clicking the link for the latest revision, and then navigating to the appropriate page, such as xr-barebones.html.

  2. Click “Enter XR” to start an XR session that uses the mock OpenVR component.