To help software developers create an application with actual facial expressions on 3D avatars with the OpenXR facial tracing extension XR_HTC_facial_tracking.

Load sample code

Window > Package Manager > VIVE OpenXR Plugin - Windows > Samples > Click to import FacialTracking Example

Play the sample scene

Edit > Project Settings > XR Plug-in Management > Select OpenXR , click Exclamation mark next to it then choose Fix All.
Edit > Project Settings > XR Plug-in Management > OpenXR > Add Interaction profiles for your device.
Edit > Project Settings > XR Plug-in Management > OpenXR > Select Facial Tracking under VIVE OpenXR Feature Groups.
In the Unity Project window, select the sample scene file in Assets > Samples > VIVE OpenXR Plugin - Windows > 1.0.12 > FacialTracking Example > Scenes > FaceSample.unity then click Play.

How to use VIVE OpenXR Facial Tracking Unity Feature

Import VIVE OpenXR Plugin - Windows
Add your avatar object to the Unity scene.
- Attach "AvatarEyeSample.cs" and "AvatarLipSample.cs" to your avatar object or Drag "Avatar_Shieh_V2" prefab into scene hierarchy.
- Refer to functions StartFrameWork and StopFrameWork in FacialManager.cs for creating and releasing handle for face.
- Refer to the function GetWeightings in FacialManager.cs for getting the weightings of blendshapes.