Session

ARKit implements XRSessionSubsystem.GetAvailabilityAsync, which consists of the device checking that it's running on iOS 11.0 or above. For more information, see Session.

Native pointer

XRSessionSubsystem.nativePtr values returned by this package contain a pointer to the following struct:

typedef struct UnityXRNativeSession
{
    int version;
    void* sessionPtr;
} UnityXRNativeSession;

This package also provides a header file containing the definitions of various native data structs including UnityXRNativeSession. It can be found in the package directory under Includes~/UnityXRNativePtrs.h.

Cast void* sessionPtr to an ArSession handle in Objective C using the following example code:

// Marhshal the native session data from the XRSessionSubsystem.nativePtr in C#
UnityXRNativeSession nativeSessionData;
ArSession* session = static_cast<ArSession*>(nativeSessionData.sessionPtr);

To learn more about native pointers and their usage, refer to Extending AR Foundation.