C Specification

XrSystemFacialTrackingPropertiesHTC is defined as:

// Provided by XR_HTC_facial_tracking
typedef struct XrSystemFacialTrackingPropertiesHTC {
    XrStructureType    type;
    void*              next;
    XrBool32           supportEyeFacialTracking;
    XrBool32           supportLipFacialTracking;
} XrSystemFacialTrackingPropertiesHTC;

Members

Member Descriptions

  • type is the XrStructureType of this structure.

  • next is NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR or this extension.

  • supportEyeFacialTracking indicates if the current system is capable of generating eye expressions.

  • supportLipFacialTracking indicates if the current system is capable of generating lip expressions.

Description

An application can inspect whether the system is capable of two of the facial tracking by extending the XrSystemProperties with XrSystemFacialTrackingPropertiesHTC structure when calling xrGetSystemProperties.

Valid Usage (Implicit)

If a runtime returns XR_FALSE for supportEyeFacialTracking, the runtime must return XR_ERROR_FEATURE_UNSUPPORTED from xrCreateFacialTrackerHTC with XR_FACIAL_TRACKING_TYPE_EYE_DEFAULT_HTC set for XrFacialTrackingTypeHTC in XrFacialTrackerCreateInfoHTC. Similarly, if a runtime returns XR_FALSE for supportLipFacialTracking the runtime must return XR_ERROR_FEATURE_UNSUPPORTED from xrCreateFacialTrackerHTC with XR_FACIAL_TRACKING_TYPE_LIP_DEFAULT_HTC set for XrFacialTrackingTypeHTC in XrFacialTrackerCreateInfoHTC.

See Also

XR_HTC_facial_tracking, XrBool32, XrStructureType

Document Notes

For more information, see the OpenXR Specification

This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

Copyright 2014-2024, The Khronos Group Inc.

This work is licensed under a Creative Commons Attribution 4.0 International License.