C Specification

The xrCreateFacialExpressionClientML function is defined as:

// Provided by XR_ML_facial_expression
XrResult xrCreateFacialExpressionClientML(
    XrSession                                   session,
    const XrFacialExpressionClientCreateInfoML* createInfo,
    XrFacialExpressionClientML*                 facialExpressionClient);

Parameters

Parameter Descriptions

Description

An application can create an XrFacialExpressionClientML handle using xrCreateFacialExpressionClientML function.

If the system does not support parsing facial expressions, the runtime must return XR_ERROR_FEATURE_UNSUPPORTED from xrCreateFacialExpressionClientML. In this case, the runtime must also return XR_FALSE for XrSystemFacialExpressionPropertiesML::supportsFacialExpression when the function xrGetSystemProperties is called.

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

  • XR_ERROR_FACIAL_EXPRESSION_PERMISSION_DENIED_ML

See Also

XR_ML_facial_expression, XrFacialExpressionClientCreateInfoML, XrFacialExpressionClientML, 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 2014-2025 The Khronos Group Inc.

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