Changelog

All notable changes to this package will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[4.1.13] - 2022-11-01

[4.1.12] - 2022-09-11

Fixes

  • Fixed an issue where rendered frames comes out of order on iOS 16 when the app is built with multi-threaded rendering enabled in Unity.
  • Fixed an issue where both ARRaycastManager and ARPointCloudManager could attempt to copy invalid NativeArray<T>s when using the raycast fallback API.
  • Fixed issue 960 where ARPointCloudManager.Append could incorrectly throw an ArgumentException. For developers with custom implementations of XRRaycastSubsystem.Provider which do not support raycasting with an arbitrary ray, fallback raycasts including hits from point clouds will now correctly return all values.
  • Fixed issue 963 where ARRaycastManager.RaycastFallback would sometimes return incomplete results. Developers with custom implementations of XRRaycastSubsystem.Provider which do not support raycasting with an arbitrary ray will now see correct results from ARRaycastManager.Raycast(Ray, TrackableType, Allocator).

[4.1.10] - 2022-03-01

Fixes

  • Fixed issue 1392753 where occlusion texture would remain frozen instead of being cleared when the occlusion manager is disabled.
  • Fixed an issue where creating an ARSessionOrigin would not tag the newly created camera as "MainCamera".

[4.1.9] - 2022-01-06

Fixes

  • Fixed a NullReferenceException when accessing mesh information from an ARFace in the Editor. The exception was thrown from Unity.Collections.NativeArray`1[T].CheckElementReadAccess.
  • ARMeshManager no longer throws ArgumentNullExceptions ("Value cannot be null") when exiting play mode in the editor.
  • Fixed Issue 1353859: During face tracking, each ARFace may create three additional GameObjects to represent the left eye, right eye, and fixation point. Previously, this would incorrectly create three additional, superfluous GameObjects at the origin. These additional GameObjects are no longer created.
  • Fixed a missing dependency on built-in particle system module.
  • Fixed incorrect validation in ARMeshManager which prevented its use in a prefab.

[4.1.7] - 2021-03-31

Fixes

[4.1.5] - 2021-01-25

Changes

  • Add description for occlusion on the main AR Foundation manual page, and edit the human segmentations description.
  • Update XR Plug-in Management dependency to 4.0.

[4.1.3] - 2021-01-05

Changes

  • The ARCameraBackground component now sets the camera's field of view. Because the ARCameraBackground already overrides the camera's projection matrix, this has no effect on ARFoundation. However, any code that reads the camera's fieldOfView property will now read the correct value.
  • Minor documentation formatting fixes.
  • Update the inspector for the ARSession component to include a help box describing the function of the Match Frame Rate option.
  • This package now requires Unity 2019.4.15f1 or later.

[4.1.1] - 2020-11-11

Changes

  • Released package for Unity 2021.1

[4.1.0-preview.13] - 2020-11-09

Fixes

  • Remove fix made in 4.1.0-preview.10 for URP 10+ rendering. URP 10 now has a proper fix for this issue.

[4.1.0-preview.12] - 2020-11-02

Fixes

  • Trackable managers no longer attempt to query subsystems for trackable changes when the subsystems are stopped. This fixes the console error that will occur with MagicLeap: 
    InvalidOperationException: Can't call "GetChanges" without "Start"ing the anchor subsystem!

[4.1.0-preview.11] - 2020-10-22

New

Changes

Fixes

  • Fixed in an incorrect Debug.Assert regarding a texture descriptor changing from None to something other than None. A typical error message (only seen in Development Builds) was 
    Texture descriptor dimension should not change from None to Tex2D.
  • Fix a null reference exception in the occlusion manager when setting the environment depth mode or occlusion preference mode when the device does not support the occlusion subsystem.

[4.1.0-preview.10] - 2020-10-12

Changes

  • Changed internal uses of Debug.Assert to a custom version that does not allocate the message string unless the assert fails. This reduces per-frame GC allocations when UNITY_ASSERTIONS are enabled (typically in development builds).
  • Update XR Plug-in Management to 3.2.16.

Fixes

  • Minor documentation fixes.
  • Fix an issue with background rendering with URP 10+ rendering with a Final Blit pass.

[4.1.0-preview.9] - 2020-09-25

New

Fixes

  • Fix several documentation links.
  • Fix AROcclusionManager's handling of depth when non-unit scale is applied.

[4.1.0-preview.7] - 2020-08-26

Changes

  • Added a warning when an ARSession is used in a scene (or scenes), but no providers are selected in XR Plug-in Management for the current build platform.

Fixes

[4.1.0-preview.6] - 2020-07-27

[4.1.0-preview.5] - 2020-07-16

Changes

Fixes

  • The choice of whether to use the legacy or Universal render pipeline was based on an incorrect GraphicsSettings parameter (renderPipelineAsset instead of currentRenderPipeline). This meant that certain quality settings may not have been respected properly.
  • Fixed a bug where it was possible for the ARSession component to set the Application.targetFrameRate even when matchFrameRateRequested was false.

[4.1.0-preview.3] - 2020-07-09

Fixes

  • Minor documentation fixes.

Changes

[4.1.0-preview.2] - 2020-06-24

Changes

  • Updating the documentation for new package versions.

[4.1.0-preview.1] - 2020-06-23

New

  • Add support for environment depth through the AROcclusionManager/XROcclusionSubsystem.

Changes

  • Minimum Unity version for this package is now 2019.4.

[4.0.2] - 2020-05-29

New

  • The ARCameraManager now invokes XRCameraSubsystem.OnBeforeBackgroundRender immediately before rendering the camera background.
  • Added a helper utility, LoaderUtility, for interacting with XR Management and added a section to the migration guide explaining how to use it.

Changes

  • Changed XRCameraImage to XRCpuImage along with APIs that used this type (e.g., ARCameraManager.TryGetLatestImage). See the migration guide for more details.
  • The ARMeshManager no longer creates and destroys an XRMeshSubsystem. Instead, it relies on XR Management to create and destroy the subsystem. The ARMeshManager still starts and stops it.

Fixes

  • Fixed a bug which could throw an ArgumentNullException, typically on application shutdown: ArgumentNullException: Value cannot be null. Parameter name: _unity_self

[4.0.0-preview.3] - 2020-05-04

New

  • Add support for tracked raycasts. A tracked raycast is repeated and updated automatically. See ARRaycastManager.AddRaycast.
  • ARCameraFrameReceivedEventArgs now provides a camera grain texture along with an associated intensity value which can be used to add image noise characteristics to virtual content. The usage of these properties may vary by platform, so please consult the documentation of the specific provider plugin when using this feature.

Fixes

  • Fixed all broken or missing scripting API documentation.

Changes

  • Updating dependency on com.unity.xr.management to 3.2.10.

[4.0.0-preview.1] - 2020-02-26

Improvements

Breaking Changes

  • See the Migration Guide.
  • AR Foundation now relies on XR Management to initialize subsystems. If your project's configuration does not enable an XR Loader appropriate for your target platforms then the underlying subsystems AR Foundation depends on will not be available. Previously AR Foundation would attempt to initialize subsystems itself in the absence of a valid XR Management configuration.

[3.1.3] - 2020-04-13

Fixes

  • The documentation for the ARFace scripting API for accessing left eye, right eye, and fixation point incorrectly referred to a nullable value type, when in fact the returned type is a Transform. This has been fixed.
  • Eliminating shader compiler errors that started with Unity 2020.1 and that originate from the ARKit package.

[3.1.0-preview.8] - 2020-03-12

[3.1.0-preview.7] - 2020-03-03

Fixes

  • Patched a memory leak by destroying the camera textures when the camera manager is disabled.

[3.1.0-preview.6] - 2020-01-21

Fixes

  • Fixed memory leak when accessing the humanStencilTexture and humanDepthTexture properties of the AROcclusionManager.

[3.1.0-preview.4] - 2020-01-16

Improvements

  • Updated documentation.

[3.1.0-preview.3] - 2019-12-20

Fixes

  • Fix HelpURLs on MonoBehaviours to point to the 3.1 version of the documentation.
  • Added FormerlySerializedAs to ARAnchorManager.m_AnchorPrefab field to preserve any prefab specified when it was the ARReferencePointManager.
  • Fixed issue that broke the camera background rendering when URP post-processing was enabled on the AR camera.

New

  • Added support for HDR light estimation to ARCameraManager.
  • Added script updater support for facilitating the rename of Reference Points to Anchors

[3.1.0-preview.1] - 2019-11-21

New

  • Added the new AROcclusionManager with human segmentation functionality (on some iOS hardware).

[3.0.1] - 2019-11-18

Breaking changes

  • Renaming the concept of Reference Points to Anchors. The Unity script updater should convert any references to ARReferencePointManager, ARReferencePoint, and ARReferencePointsChangedEventArgs the next time the project is loaded into the Editor.

Fixes

  • Removed references to LWRP from the documentation.

[3.0.0-preview.6] - 2019-11-14

Fixes

  • Fixed an issue which could cause the background camera texture to stop functioning correctly on certain devices running OpenGLES3.
  • Previously, when using LWRP or UniversalRP, the requested culling mode was ignored. This resulted in an incorrect culling mode when using the front facing camera with ARCore (e.g., during face detection). This has been fixed.

Breaking Changes

  • The following virtual methods on the ARCameraBackground have been removed:

    • ConfigureLegacyRenderPipelineBackgroundRendering
    • TeardownLegacyRenderPipelineBackgroundRendering

    Previously, ConfigureLegacyRenderPipelineBackgroundRendering configured a CommandBuffer and added the command buffer to the camera. If you had overriden this method previously, you can override the legacyCameraEvents property to specify the camera events which use the CommandBuffer, and ConfigureLegacyCommandBuffer(CommandBuffer) to configure the command buffer. There is no need to override TeardownLegacyRenderPipelineBackgroundRendering anymore because the ARCameraBackground remembers which CameraEvents the buffer was added to so it can remove them later.

[3.0.0-preview.4] - 2019-10-22

New

Fixes

  • Fixed an issue with the ARSessionOrigin which could produce incorrect behavior with non-identity transforms.
  • ARPlane.center was computed incorrectly (though the result was close to the correct answer). This has been fixed.

[3.0.0-preview.3] - 2019-09-26

New

  • If "match frame rate" is enabled, the ARSession now checks for changes to the recommended frame rate each frame.

Breaking changes

  • Some properties on ARPointCloud changed from NativeArrays to nullable NativeSlices. See the migration guide for more details.
  • The ARFaceManager.supported property has been removed. If face tracking is not supported, the manager's subsystem will be null. This was done for consistency as no other manager has this property. If a manager's subsystem is null after enabling the manager, that generally means the subsystem is not supported.

Fixes

  • Fixed a typo in Face Tracking documentation which incorrectly referred to planes instead of faces. Also updated the screenshot of the ARFaceManager to reflect the "Maximum Face Count" field.

[3.0.0-preview.2] - 2019-09-05

Fixes

  • Fix issue where having the camera clearFlags property set to Skybox would break background rendering.
  • Fix issue where screen would flash green before the first camera frame was received.

Improvements

  • Converted dependency on Legacy Input Helpers package to optional dependency. ARFoundation will continue to support the use of TrackedPoseDriver and the UnityEngine.SpatialTracking namespace but there is no longer a dependency on that package. ARFoundation can instead use the ARTrackedPoseDriver self-contained component to surface the device's pose.

[3.0.0-preview.1] - 2019-08-21

New

  • Added support for eye tracking.
  • Added support for XRParticipantSubsystem, which can track other users in a multi-user collaborative session.
  • Added support for exposure duration
  • Added support for exposure offset
  • Add support for Lightweight Render Pipeline and Universal Render Pipeline.
  • Add support for height scale estimatation for the 3D human body subsystem.

Improvements

  • Update the Legacy Input Helpers package to 1.3.7. This has no impact on existing functionality in ARFoundation, but should help with compatibility when using other packages.
  • Add IEquatable to TrackableCollection.
  • Previously, the ARTrackedImageManager and ARTrackedObjectManager would throw an exception if enabled without a valid reference library. These managers no longer throw; now, they disable themselves. This makes it possible to add one of these managers at runtime, since Unity will automatically invoke OnEnable before you have a chance to set a valid reference library. If you create one of these managers at runtime, you will need to set a valid reference library and then re-enable it.

Fixes

  • Fixed the issue where native providers were not being reinstantiated after being destroyed when loading/reloading a new scene.

[2.2.0-preview.3] - 2019-07-16

New

  • Added support for XR Management.
  • Add support for ARSession.notTrackingReason.
  • Add an option to synchronize the Unity frame with the AR session's update. See ARSession.matchFrameRate.
  • Add an ARMeshManager to interface with the XRMeshSubsystem. This is useful for XR Plugins that can generate meshes at runtime.

Changes

  • Previously, a trackable manager's changed event (e.g., ARPlaneSubsystem.planesChanged) was invoked every frame even if nothing had changed. Now, it is only invoked on frames when a change has occurred.

[2.2.0-preview.2] - 2019-06-05

  • Adding support for ARKit 3 functionality: Human pose estimation, human segmentation images, session collaboration, multiple face tracking, and tracking a face (with front camera) while in world tracking (with rear camera).

[2.1.0-preview.4] - 2019-06-03

Improvements

  • Added a convenience method ARTrackableManager.SetTrackablesActive(bool) which will call SetActive on each trackable's GameObject. This is useful, for example, to disable all ARPlanes after disabling the ARPlaneManager.
  • Fix NativeArray handling when ENABLE_UNITY_COLLECTIONS_CHECKS is set. This fixes an issue when running ARFoundation in the Editor. This is not set in the Player, so it is not an issue when running on device.

[2.1.0-preview.3] - 2019-05-22

Fixes

  • Fix documentation links.

[2.1.0-preview.2] - 2019-05-07

New

  • Add support for image tracking (XRImageTrackingSubsystem).
  • Add support for environment probes (XREnvironmentProbeSubsystem).
  • Add support for face tracking (XRFaceSubsystem).
  • Add support for object tracking (XRObjectTrackingSubsystem).

[2.0.1] - 2019-03-05

Changes

[1.1.0-preview.1] - 2019-01-16

Fixes

  • Add dependency on Legacy Input Helpers, which were moved from Unity to a package in 2019.1.

[1.0.0-preview.22] - 2018-12-13

  • Fix package dependency

[1.0.0-preview.21] - 2018-12-13

New

  • Added Face Tracking support: ARFaceManager, ARFace, ARFaceMeshVisualizer and related scripts. See documentation for usage.

Improvements

  • Plane detection modes: Add ability to selectively enable detection for horizontal, vertical, or both types of planes. The ARPlaneManager includes a new setting, which defaults to both.
  • Add support for setting the camera focus mode. Added a new component, ARCameraOptions, which lets you set the focus mode.

Changes

  • The light estimation option, which was previously on the ARSession component, has been moved to the new ARCameraOptions component.

[1.0.0-preview.20] - 2018-11-06

Improvements

  • Support reference points reported without a corresponding TryAddReferencePoint call. This handles reference points that are added by some other means, e.g., loaded from a serialized session.

[1.0.0-preview.19] - 2018-10-10

  • Added support for XRCameraExtensions API to get the raw camera image data on the CPU. See the manual documentation for more information.

[1.0.0-preview.18] - 2018-09-13

Fixes

  • The ARPlaneMeshVisualizer did not disable its visible components (MeshRenderer and LineRenderer) when disabled. This has been fixed.

Changes

  • The ARPlaneManager, ARPointCloudManager, and ARReferencePointManager all instantiate either prefabs that you specify or GameObjects with at least an ARPlane, ARPointCloud, or ARReferencePoint, respectively, on them. The instantiated GameObject's layer was set to match the ARSessionOrigin, overwriting the layer specified in the prefab. This has been changed so that if a prefab is specified, no changes to the layer are made. If no prefab is specified, then a new GameObject is created, and its layer will match that of the ARSessionOrigin's GameObject.

New

  • Added ARPlane.normal to get the ARPlane's normal in world space.

LWRP support

Added LWRP support by allowing ARCameraBackground to use a background renderer that overrides the default functionality. This works in conjunction with some LWRPSupport files (see arfoundation-samples) that will live in your LWRP project.

[1.0.0-preview.17] - 2018-08-02

Fixes

  • Add FormerlySerializedAs attribute to serialized field changes to ARCameraBackground.

[1.0.0-preview.16] - 2018-07-26

Change

  • Removed static constructor from ARSubsystemManager. This allows access to the manager without forcing the creation of the subsystems, making the initialization more flexible.

[1.0.0-preview.15] - 2018-07-26

Fixes

  • ARPlane.vertexChangedThreshold is no longer allowed to be negative.
  • The ARCameraBackground component did not reset the projection matrix on disable, leading to stretching or other distortion. This has been fixed.
  • The ARCameraBackground component did not properly handle an overriden material. This has been fixed (see API Changes below).
  • The ARPlaneMeshGenerators was meant to generate a triangle fan about the center of the plane. However, indices were instead generated as a fan about one of the bounary points. The visual result is similar, but can lead to long thin triangles. This has been fixed to use the plane's center point as intended.
  • Update for compatibility with 2018.3
  • If the ARPlaneMeshVisualizer has a LineRenderer on it, then it will be scaled to match the ARPlane's scale, making the visual width invariant under differing ARSessionOrigin scales.
  • When the ARPointCloudManager instantiated a point cloud prefab, it did not change its transform. If it was not identity, then feature points would appear in unexpected places. It now instantiates the point cloud prefab with identity transform.
  • The menu item "GameObject > XR > AR Default Point Cloud" created a GameObject which used a particle system whose "Scaling Mode" was set to "Local". If used as the ARPointCloudManager's point cloud prefab, this would produce odd results when the ARSessionOrigin was scaled. The correct setting is "Hierarchy", and the utility now creates a particle system with the correct setting.

API Changes

ARCameraBackground

The API for overriding the material has been refactored. Previously, a custom material could be set with the ARCameraBackground.material setter, but this might be overwritten later if the option to override was disabled.

  • Rename: overrideMaterial is now useCustomMaterial
  • New member: customMaterial
  • The following properties are now private:
    • material setter (getter is still public)
    • backgroundRenderer

Use the ARCameraBackground.material getter to get the currently active material.

[1.0.0-preview.14] - 2018-07-17

Fixes

  • Fixed a bug in the ARCameraBackground which would not render the camera texture properly if the ARSession had been destroyed and then recreated or if the ARCameraBackground had been disabled and then re-enabled.
  • ARSubsystemManager.systemState's setter was not private, allowing user code to change the system state. The setter is now private.
  • ARPlane.trackingState returned a cached value, which was incorrect if the ARSession was no longer active.

Improvements

  • Added ARSession.Reset() to destroy the current AR Session and establish a new one. This destroys all trackables, such as planes.
  • Added an ARSubsystemManager.sessionDestroyed event. The ARPlaneManager, ARPointCloudManager, and ARReferencePointManager subscribe to this event, and they remove their trackables when the ARSession is destroyed.

[1.0.0-preview.13] - 2018-07-03

  • Fixed a bug where point clouds did not stop rendering when disabled.
  • Added a getter on the ARPointCloudManager for the instantiated ARPointCloud.
  • Added UVs to the Mesh generated by the ARPlaneMeshVisualizer.
  • Refactored out plane mesh generation functionality into a new static class ARPlaneMeshGenerators.
  • Added a meshUpdated event to the ARPlaneMeshVisualizer, which lets you customize the generated Mesh.
  • Added AR Icons.

[1.0.0-preview.12] - 2018-06-14

  • Add color correction value to LightEstimationData.

[1.0.0-preview.11] - 2018-06-08

  • Improve lifecycle reporting: remove public members ARSubsystemManager.availability and ARSubsystemManager.trackingState. Combine with ARSubsystemManager.systemState and the public event ARSubsystemManager.systemStateChanged.
  • Docs improvements
  • Move ParticleSystem to the top of the ARDebugPointCloudVisualizer

[1.0.0-preview.10] - 2018-06-06

  • Update documentation: ARSession image and written description.

[1.0.0-preview.9] - 2018-06-06

  • Rename ARBackgroundRenderer to ARCameraBackground
  • Unify ARSessionState & ARSystemState enums

[1.0.0-preview.8] - 2018-05-23

  • Change dependency to ARExtension 1.0.0-preview.2

[1.0.0-preview.7] - 2018-05-23

  • Remove "timeout" from AR Session
  • Add availability and AR install support
  • Significant rework to startup lifecycle & asynchronous availability check

[1.0.0-preview.6] - 2018-04-25

Rename ARUtilities to ARFoundation

  • This package is now called ARFoundation.
  • Removed ARPlaceOnPlane, ARMakeAppearOnPlane, ARPlaneMeshVisualizer, and ARPointCloudParticleVisualizer as these were deemed sample content.
  • Removed setup wizard.
  • Renamed ARRig to ARSessionOrigin.
  • ARSessionOrigin no longer requires its Camera to be a child of itself.