Plane detection platform support

Plane detection is supported on the ARCore, ARKit, Meta OpenXR and XR Simulation platforms, as shown in the table below:

Provider plug-in	Plane detection supported	Provider documentation
Google ARCore XR Plug-in	Yes	Plane detection (ARCore)
Apple ARKit XR Plug-in	Yes	Plane detection (ARKit)
Apple visionOS XR Plug-in	Yes	N/A
Microsoft HoloLens
Unity OpenXR: Meta	Yes	Plane detection (Meta OpenXR)
XR Simulation	Yes	N/A

Check for plane detection support

Your app can check at runtime whether a provider plug-in supports plane detection on the user's device. This is primarily useful in situations where you are unsure if the device supports plane detection, which may be the case if you are using AR Foundation with a third-party provider plug-in.

Use the example code below to check whether the device supports plane detection:

void Start()
{
    if (LoaderUtility
            .GetActiveLoader()?
            .GetLoadedSubsystem<XRPlaneSubsystem>() != null)
    {
        // XRPlaneSubsystem was loaded. The platform supports plane detection.
    }
}

Note

This example code assumes that your app has already initialized XR.

By default XR initializes automatically when your app starts, but this is configurable via Project Settings > XR Plug-in Management > Initialize XR on Startup. Refer to the XR Plug-in Management End-user documentation for more detailed information about managing the XR Plug-in lifecycle.

Optional features

Plane detection providers may choose whether to implement any of the optional features of AR Foundation's XRPlaneSubsystem, as indicated in the table below:

Feature	Description	ARCore	ARKit	Meta OpenXR	XR Simulation
Horizontal plane detection	Indicates whether the provider implementation supports the detection of horizontal planes, such as the floor.	Yes	Yes	Yes	Yes
Vertical plane detection	Indicates whether the provider implementation supports the detection of vertical planes, such as walls.	Yes	iOS 11.3+	Yes	Yes
Arbitrary plane detection	Indicates whether the provider implementation supports the detection of planes that are aligned with neither the horizontal nor vertical axes.			Yes
Boundary vertices	Indicates whether the provider implementation supports boundary vertices for its planes.	Yes	Yes	Yes	Yes
Classification	Indicates whether the provider implementation can provide a value for ARPlane.classifications.		iOS 12+	Yes

Check for optional feature support

Your app can check at runtime whether a plane detection provider supports any optional features on the user's device. The XRPlaneSubsystemDescriptor contains boolean properties for each optional feature that tell you whether they are supported.

Refer to example code below to learn how to check for optional feature support:

void CheckForOptionalFeatureSupport()
{
    // This is inefficient. You should re-use a saved reference instead.
    var manager = Object.FindAnyObjectByType<ARPlaneManager>();

    // Use manager.descriptor to determine which optional features
    // are supported on the device. For example:

    if (manager.descriptor.supportsClassification)
    {
        // Classification is supported.
    }
}

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