C Specification

The XrSpatialMarkerSizeEXT structure is defined as:

// Provided by XR_EXT_spatial_marker_tracking
typedef struct XrSpatialMarkerSizeEXT {
    XrStructureType    type;
    const void*        next;
    float              markerSideLength;
} XrSpatialMarkerSizeEXT;

Members

Member Descriptions

  • type is the XrStructureType of this structure.

  • next is NULL or a pointer to the next structure in a structure chain.

  • markerSideLength is the size in meters of all markers.

Description

If XR_SPATIAL_CAPABILITY_FEATURE_MARKER_TRACKING_FIXED_SIZE_MARKERS_EXT is enumerated by xrEnumerateSpatialCapabilityFeaturesEXT for a certain capability, and if the application chains XrSpatialMarkerSizeEXT to the corresponding configuration structure of that capability, the runtime must assume that all markers detected have width and height of markerSideLength. Providing this information to the runtime allows the runtime to return a more accurate pose and size. This structure must be linked into the next chain of XrSpatialCapabilityConfigurationQrCodeEXT, XrSpatialCapabilityConfigurationMicroQrCodeEXT, XrSpatialCapabilityConfigurationArucoMarkerEXT, or XrSpatialCapabilityConfigurationAprilTagEXT.

Valid Usage (Implicit)

See Also

XR_EXT_spatial_marker_tracking, 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 2014-2025 The Khronos Group Inc.

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