2.4.1

Unity 2.4.1 ( July 18, 2024 ):

How to Install VIVE OpenXR Plugin in Unity

Release Notes:

Plugin package name in Unity is VIVE OpenXR Plugin.

Release Information:

Version: 2.4.1
Unity Engine Version: 2021.3.3f1 or newer
Unity Input System: 1.4.3 is recommended.
Unity OpenXR Plugin: 1.3.1 or 1.6.0 are recommended.
Target Platform: PC Win64, Android arm64
Target Device: VIVE XR Elite, VIVE Focus 3, VIVE Pro Series, VIVE Cosmos
Graphics API: DX11, DX12, OpenGLES3, Vulkan
OpenXR Android Loader Version: Khronos openxr_loader_for_android-1.0.32

Changes:

Address an issue that API ‘xrDestroyPassthroughHTC’ is not working under PC mode.

Supported Extensions

Extensions	PC Streaming (Focus3/ XR Elite)	PC Vive Cosmos	PC Vive Pro series	AIO Focus3/ XR Elite
Hand Tracking XR_EXT_hand_tracking	V	V	V	V
VIVE Cosmos Controller XR_HTC_vive_cosmos_controller_interaction	V※	V
Eye Gaze XR_EXT_eye_gaze_interaction	V	V	V	V
Composition Layer XR_KHR_composition_layer_cylinder XR_KHR_composition_layer_color_scale_bias				V
Scene Understanding XR_MSFT_scene_understanding		V	V
Hand Interaction XR_HTC_hand_interaction		V	V	V
PassThrough XR_HTC_passthrough	V			V
Facial Tracking XR_HTC_facial_tracking	V	V	V	V
Foveation XR_HTC_foveation				V
Display Refresh Rate XR_FB_display_refresh_rate				V
VIVE Wrist Tracker XR_HTC_vive_wrist_tracker_interaction	V※			V
VIVE XR Tracker (beta) XR_HTC_vive_xr_tracker_interaction XR_HTC_path_enumeration				V
Plane Detection (beta) XR_EXT_plane_detection				V
Anchor (beta) XR_HTC_anchor				V

※Correspondent VIVE Streaming settings required.

Feature Dependency

The "/input/grip/pose" and "/input/squeeze/value" values of XR_HTC_hand_interaction extension depend on HTC XR Elite v1.0.999.456 or newer ROM.
The XR_FB_display_refresh_rate extension depends on HTC XR Elite v1.0.999.456 or newer ROM.
The "XR_HTC_vive_xr_tracker_interaction" extension depends on HTC XR Elite v1.0.999.528 or newer ROM.
The "/input/menu/click", "/input/squeeze/click", "/input/trigger/click", "/input/trackpad/click" and "/input/trackpad/touch" values of "XR_HTC_vive_xr_tracker_interaction" extension depend on HTC XR Elite v1.0.999.676 or newer ROM.

Profile Dependency

The VIVE OpenXR Plugin provides Profiles that adhere to the OpenXR Specification, located at VIVE OpenXR Plugin > Runtime > Profiles.

These Profiles rely on the OpenXR extensions configured in Project Settings > XR Plug-in Management > OpenXR. To utilize these Profiles, you must enable the corresponding relative extensions as listed in the table below.

Profile	Extension
XR_EXT_hand_tracking	VIVE XR Hand Tracking
XR_HTC_facial_tracking	VIVE XR Facial Tracking
XR_HTC_passthrough	VIVE XR Composition Layer VIVE XR Composition Layer (Passthrough)
XR_HTC_path_enumeration	VIVE XR Path Enumeration

Toolkits

Custom Gesture: Provides interfaces to customize hand gestures by calculating the fingers "bending" states and "distance" between fingers.
Realistic Hand Interaction: Provides interfaces to grab/throw an object using Hand Tracking.
- Requires Unity XR Hands 1.3.0. Next ROM will support the latest version. - AIO only.