XrFacialExpressionBlendShapePropertiesML(3)

C Specification

The XrFacialExpressionBlendShapePropertiesML structure is defined as:

// Provided by XR_ML_facial_expression
typedef struct XrFacialExpressionBlendShapePropertiesML {
    XrStructureType                                  type;
    void*                                            next;
    XrFacialBlendShapeML                             requestedFacialBlendShape;
    float                                            weight;
    XrFacialExpressionBlendShapePropertiesFlagsML    flags;
    XrTime                                           time;
} XrFacialExpressionBlendShapePropertiesML;

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.
requestedFacialBlendShape is the type of XrFacialBlendShapeML to query the runtime for.
weight is a float describing the weight of a facial expression’s blend shape.
flags is an XrFacialExpressionBlendShapePropertiesFlagsML whose bits are specified in XrFacialExpressionBlendShapePropertiesFlagBitsML
time is the XrTime that corresponds to the moment at which the requestedFacialBlendShape is captured.

Description

XrFacialExpressionBlendShapePropertiesML structure holds the facial expression.

If requestedFacialBlendShape does not correspond to any XrFacialBlendShapeML passed into xrCreateFacialExpressionClientML then the XR_FACIAL_EXPRESSION_BLEND_SHAPE_PROPERTIES_VALID_BIT_ML and XR_FACIAL_EXPRESSION_BLEND_SHAPE_PROPERTIES_TRACKED_BIT_ML of flags must be unset. If the requestedFacialBlendShape is not available at sample time time then XR_FACIAL_EXPRESSION_BLEND_SHAPE_PROPERTIES_TRACKED_BIT_ML must be set to false.

The runtime must populate weight with the weight of the queried blend shape.

Valid Usage (Implicit)

The XR_ML_facial_expression extension must be enabled prior to using XrFacialExpressionBlendShapePropertiesML
type must be XR_TYPE_FACIAL_EXPRESSION_BLEND_SHAPE_PROPERTIES_ML
next must be NULL or a valid pointer to the next structure in a structure chain
requestedFacialBlendShape must be a valid XrFacialBlendShapeML value

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

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

XrFacialExpressionBlendShapePropertiesML(3) Manual Page

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