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Version: 20 Mar 2024

0.52.0 SDK Release Notes

This document contains the Lumin SDK release notes including the notes for the core SDK and Unity® integration.

This software is an Early Access Product.

Features​

  • SDK package includes a comprehensive set of headers files, at this time only the following headers have been cleared for ML2:

  • ml_graphics.h

  • ml_perception.h

  • ml_head_tracking.h

  • ml_input.h

  • ml_controller.h

  • ml_camera_v2.h

  • ml_native_surface.h

  • ml_media_codec.h

  • ml_media_player.h

  • ml_media_muxer.h

  • ml_media_recorder.h

  • ml_camera_metadata_v2.h

  • ml_eye_tracking.h

    • Renamed fixation to vergence
    • Removed pupil size data
    • Removed calibration status data

  • ml_gaze_recognition.h

    • Removed Push, Pull and Winks behaviors

  • ml_marker_tracking.h

    • Support for Aruco, QR code, and AprilTag markers
    • Experimental support for EAN13 and UPC-A codes
    • MLMarkerTrackinFpsHint added to control tracking framerate

  • ml_spatial_anchor.h

  • ml_planes.h

  • ml_cv_camera.h

  • ml_voice.h

  • ml_hand_tracking.h

    • Support for hand key points tracking only
    • Only 21 out of 24 key points are being tracked. Key points for Wrist Ulnar, Wrist Radial, and Hand Center are not calculated.

  • New Sample Apps:

    • Spatial Anchor App
    • Hand Tracking App
    • Marker Tracker App (support for April Tags added)

  • Android SDK support:

    • Haptics API for Controller
    • Bluetooth API
      • GATT Server API not supported

Unity® Package 0.52.0

  • Lumin SDK Version 0.52.0
  • Unity® Version: 2022.1 (custom)

This software is an Early Access Product.

Features​

  • Exposed Anchors API. Refer to the Anchors sample scene in the MagicLeapUnityExamples project for usage.
  • Exposed Voice Intents API. Refer to the VoiceIntents sample scene in the MagicLeapUnityExamples project for usage.
  • Added support for AprilTags under the MLMarkerTracker API. BREAKING CHANGE: MLMarkerTracker.MarkerType.Aruco, was changed to MLMarkerTracker.MarkerType.Aruco_April.
  • Re-enabled WebRTC support in Unity. We have also added support for FPSHint.
  • Hand tracking has been updated to only start when an app calls GestureSubsystem.Extensions.MLHandTracking.SetConfiguration(). This is done to save on resources and only enable tracking if the app is using the feature.
  • Timestamp data is now provided as part of the gaze recognition state.
  • Added MLCamera preview rendering support.
  • Added a utility UI under Project Settings > Magic Leap > Manifest Settings to help include required permissions in the app's AndroidManifest.xml file.
  • All native libs shipped with the SDK package have been marked to work on the Android x86_64 target and all platform code wrapped under #if UNITY_MAGICLEAP || UNITY_ANDROID in preparation for bringing Relish under the Unity Android platform umbrella. Developers building their own native libs for Relish or using the UNITY_MAGICLEAP preprocessor flag are advised to update their library setup and code accordingly.

Bug Fixes​

  • Fixed issue with Manifest Settings throwing error on first access.
  • Fixed MediaPlayer Stop functionality.
  • Fixed MediaPlayer local playback.
  • Fixed C-API enum mismatch in GazeRecognition API.
  • Updated WebRTC API to support deprecation of distinct MLMRCamera class.
  • Updated MagicLeapController/isTracked input action binding to be a passthrough instead of a button for better detection of connection status at scene startup.
  • Fixed using the PlayerInput component for Magic Leap Controller events.

Deprecations & Removals​

  • Eye tracking calibration status has been removed.
  • WinkLeft, WinkRight, Push & Pull behaviors have been removed from the MLGazeRecognition API.

Known Issues​

  • WebRTC: local video rendering does not work when using native buffers.
  • WebRTC: using app-defined video source with CPU buffers and YUV frame format sends black-and-white frames (awaiting platform support).
  • Eye blinking state is not reported either by the eye tracking api or the gaze recognition api (awaiting platform support).
  • Eye pupil size is always reported as 4.0 (awaiting platform support).
  • Labdriver is run even when MagicLeapLoader is not selected in XR Plugin Management.
  • Launching / terminating ZI after having played 1 editor session already, is not picked up by Unity and it continues to assume the original state of ZI for subsequent plays.
  • Media player render with a small grey-block at the bottom.
  • MLMarkerTrackerDecodedBinaryData restricts data size to 100.