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Unity overview

ARCore provides two different SDKs for using Unity to develop AR apps for Android.

  1. AR Foundation with ARCore XR Plugin, and ARCore Extensions — Recommended

    ARCore Extensions (installation instructions) is a package that provides additional ARCore functionality that can be used with AR Foundation (installation instructions). When targeting Android, AR Foundation requires ARCore XR Plugin.

  2. ARCore SDK for Unity — Not compatible with AR Foundation

    ARCore SDK for Unity is a standalone SDK that lets you use ARCore's features when targeting Android. It is provided as a standalone *.unitypackage, available from the Downloads page. The ARCore SDK for Unity is not compatible with AR Foundation.

Available features by development platform

ARCore feature AR Foundation with ARCore Extensions
(Recommended) 		ARCore SDK for Unity
(Not compatible with AR Foundation)
Supported Unity versions Unity 2019.4.3f1 or later Unity 2017.4.40 or later
GitHub repo(s)
(SDK / samples) 		google-ar/arcore-unity-extensions
Unity-Technologies/arfoundation-samples
 google-ar/arcore-unity-sdk
Detect tracking issues Use notTrackingReason provided by ARSession and returning a NotTrackingReason Use LostTrackingReason
Plane finding Use Plane Detection provided by ARPlaneManager ✓
Local anchors Use Anchors provided by ARAnchorManager ✓
Basic light estimation Use Ambient Intensity Light Estimation mode provided by ARCameraManager See Light Estimation
Environmental HDR light estimation Automatically enabled when a compatible camera config is selected and one or more Environmental HDR settings are selected:
  • Ambient Spherical Harmonics, Main Light Direction, Main Light Intensity in the Light Estimation mode provided by ARCameraManager
  • Environmental Probes are enabled in an AREnvironmentProbeManager
See Light Estimation
Augmented Images Use (2D) Image Tracking provided by ARTrackedImageManager See Augmented Images
Augmented Faces Use Face Tracking provided by ARFaceManager See Augmented Faces
Cloud Anchors Provided by ARCore Extensions See Cloud Anchors
Depth API Use AROcclusionManager to enable Automatic Occlusion in AR Foundation 4.1.0-preview.2 or later with ARCore XR Plugin 4.1.0-preview.2 or later See Depth API
Raycasting Use Raycasting provided by ARRaycastManager ✓
Feature points Use Point Clouds provided by ARPointCloudMaganer ✓
AR camera background image Use Pass-through video provided by ARCameraBackground ✓
CPU image access Provided by AR Foundation ✓
GPU texture access Accessible as external Texture2Ds. ✓
Multithreaded rendering Supported in Android Player Settings in AR Foundation 2.1.0 or later ✓

Next steps