C Specification

The xrCreateFaceTracker2FB function is defined as:

// Provided by XR_FB_face_tracking2
XrResult xrCreateFaceTracker2FB(
    XrSession                                   session,
    const XrFaceTrackerCreateInfo2FB*           createInfo,
    XrFaceTracker2FB*                           faceTracker);

Parameters

Parameter Descriptions

Description

An application can create an XrFaceTracker2FB handle using xrCreateFaceTracker2FB function.

If the system does not support face tracking, the runtime must return XR_ERROR_FEATURE_UNSUPPORTED from xrCreateFaceTracker2FB. In this case, the runtime must return XR_FALSE for both XrSystemFaceTrackingProperties2FB::supportsVisualFaceTracking and XrSystemFaceTrackingProperties2FB::supportsAudioFaceTracking when the function xrGetSystemProperties is called, so that the application can avoid creating a face tracker.

Valid Usage (Implicit)
Return Codes
On success, this command returns

  • XR_SUCCESS

  • XR_SESSION_LOSS_PENDING

On failure, this command returns

  • XR_ERROR_FUNCTION_UNSUPPORTED

  • XR_ERROR_VALIDATION_FAILURE

  • XR_ERROR_RUNTIME_FAILURE

  • XR_ERROR_HANDLE_INVALID

  • XR_ERROR_INSTANCE_LOST

  • XR_ERROR_SESSION_LOST

  • XR_ERROR_OUT_OF_MEMORY

  • XR_ERROR_LIMIT_REACHED

  • XR_ERROR_FEATURE_UNSUPPORTED

See Also

XR_FB_face_tracking2, XrFaceTracker2FB, XrFaceTrackerCreateInfo2FB, XrSession

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.