C Specification

The XrEventDataMarkerTrackingUpdateVARJO structure is defined as:

// Provided by XR_VARJO_marker_tracking
typedef struct XrEventDataMarkerTrackingUpdateVARJO {
    XrStructureType    type;
    const void*        next;
    uint64_t           markerId;
    XrBool32           isActive;
    XrBool32           isPredicted;
    XrTime             time;
} XrEventDataMarkerTrackingUpdateVARJO;

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.

  • markerId unique identifier of the marker that has been updated.

  • isActive the tracking state of the marker.

  • isPredicted the prediction state of the marker.

  • time the time of the marker update.

Description

Receiving the XrEventDataMarkerTrackingUpdateVARJO event structure indicates that the tracking information has changed. The runtime must not send more than one event per frame per marker. The runtime must send an event if the marker has changed its state (active or inactive). The runtime must send an event if it has detected pose change of the active marker.

Valid Usage (Implicit)

See Also

XR_VARJO_marker_tracking, XrBool32, XrEventDataBaseHeader, XrEventDataBuffer, XrStructureType, XrTime, xrPollEvent

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.