OpenXR Specification 1.1.50

OpenXR Specification 1.1.50 (2025-07-24)

This release features a new API design principles section in the Style Guide, a
new loader extension, and several new vendor extensions, among other changes.

• Specification
  • Addition: Add an informative chapter on OpenXR API design principles to the
    Style Guide.
    (internal MR 3335)
  • Change: In XR_BD_spatial_anchor, change the
    XrSpatialAnchorCreateCompletionBD structure to make the last element be the
    created handle.
    (internal MR 3876)
  • Fix: Show correct parentage of XrEventData... structures.
    (internal MR 3871)
  • Fix: Incorrect parameter description for xrGetControllerModelStateMSFT
    (parameter is XrControllerModelStateMSFT, but parameter description
    referenced XrControllerModelNodeStateMSFT)
    (internal MR 3890)
  • Fix: Clarify parameters for xrDestroySpatialEntityEXT,
    xrGetSpatialBuffer..., and XrSpatialComponentDataQueryResultEXT.
    (internal MR 3897)
  • Improvement: Add spec language for fixed size input / output arrays.
    (internal MR 3754)
  • New multi-vendor extension specification: XR_EXT_loader_init_properties is
    intended for limited, specialized use cases mainly in automation and testing,
    and is primarily expected to be used via a loader-provided implementation.
    (internal MR 2454)
  • New vendor extension specification: XR_META_body_tracking_calibration allows
    an application using XR_FB_body_tracking to explicitly override body height
    used for that tracking.
    (internal MR 2963)
  • New vendor extension specification: XR_ANDROID_passthrough_camera_state,
    providing information about the passthrough camera used with non-opaque
    environment blend modes.
    (internal MR 3614)
  • New vendor extension specification: XR_ANDROID_trackables providing access to
    trackable planes in the environment.
    (internal MR 3615)
  • New vendor extension specification: XR_ANDROID_raycast allowing ray-
    intersection tests with trackables in the environment, building on
    XR_ANDROID_trackables.
    (internal MR 3620)
  • New vendor extension specification: XR_ANDROID_trackables_object extends the
    capabilities of XR_ANDROID_trackables to other objects in the environment.
    (internal MR 3623)
  • New vendor extension specification: XR_ANDROID_device_anchor_persistence
    allows the application to
    persist, retrieve, and unpersist anchors across device sessions, building on
    XR_ANDROID_trackables.
    (internal MR 3626)
  • New vendor extension specification: XR_ANDROID_anchor_sharing_export.
    (internal MR 3627)
  • New vendor extension specification: XR_ANDROID_trackables_marker extends
    XR_ANDROID_trackables to support ArUco and AprilTag markers.
    (internal MR 3774)
• Registry
  • Change: Update the XrSpatialAnchorCreateCompletionBD structure, and increment
    the revision of XR_BD_spatial_anchor.
    (internal MR 3876)
  • Fix: Remove XR_EXT_palm_pose paths from XR_HTCX_vive_tracker_interaction,
    as the /user/hand/left|right paths are not valid paths for Vive Trackers.
    (internal MR 3844)
  • Fix: Include XR_ERROR_SESSION_NOT_RUNNING in list of errors
    xrEnumerateInteractionRenderModelIdsEXT can return. (Already in specification
    prose.)
    (internal MR 3889)
  • Fix: Typo in comment for XR_ERROR_SPATIAL_PERSISTENCE_SCOPE_INCOMPATIBLE_EXT.
    (internal MR 3897)
  • Fix: Add explicit dependency to XR_ML_compat for
    XrCoordinateSpaceCreateInfoML.
    (internal MR 3907)
  • Improvement: Add comments for the XrResult values added by
    XR_BD_spatial_anchor and XR_BD_spatial_anchor_sharing.
    (internal MR 3861,
    internal issue 2535)
  • New multi-vendor extension: XR_EXT_loader_init_properties
    (internal MR 2454)
  • New vendor extension: XR_META_body_tracking_calibration.
    (internal MR 2963)
  • New vendor extension: XR_ANDROID_passthrough_camera_state.
    (internal MR 3614)
  • New vendor extension: XR_ANDROID_trackables.
    (internal MR 3615)
  • New vendor extension: XR_ANDROID_raycast.
    (internal MR 3620)
  • New vendor extension: XR_ANDROID_trackables_object.
    (internal MR 3623)
  • New vendor extension: XR_ANDROID_device_anchor_persistence.
    (internal MR 3626)
  • New vendor extension: XR_ANDROID_anchor_sharing_export.
    (internal MR 3627)
  • New vendor extension: XR_ANDROID_trackables_marker.
    (internal MR 3774)