XR 아키텍처

Unity supports XR development through its plug-in framework and a set of feature and tool packages. Use the XR Plug-in Management settings page to enable XR support in a Unity project and to choose the plug-ins for the XR devices your project supports. Use the Package Manager to install the additional feature packages.

다음 다이어그램은 현재 Unity XR 플러그인 프레임워크 구조와 플랫폼 공급자 구현과 함께 작동하는 방식을 보여줍니다.

Plug-ins for an XR platform implement the subsystem interfaces defined in the Unity XR SDK. The Unity Engine and XR packages use the subsystem interfaces to provide features to XR apps.

XR 공급자 플러그인 프레임워크

An XR provider plug-in is a Unity plug-in that supports an XR device platform. For example, the ARCore plugin supports the Android AR platform on hand-held Android devices, while the Oculus plug-in supports Oculus devices on both Windows and Android.

An XR provider plug-in implements interfaces defined by the Unity XR SDK. These interfaces are called Subsystems in Unity XR. A plug-in that implements one or more subsytems is called a Provider plug-in. Typically, a provider plug-in uses the device maker’s own native libraries to implement the Unity interfaces for their devices. The provider plug-in registers the subsystems it provides so that the Unity XR code knows which features are available when it loads the plug-in.

Unity code in the engine and packages use the subsystem interfaces to communicate with the active providers and to provide XR features to your application. Because of this common interface, you can generally reuse the same code across many XR devices. (Of course, if a provider or device doesn’t support a particular feature, then that feature cannot work when using that provider or on those devices lacking the required hardware or software support.)

보조 시스템

XR subsystems provide XR features to your Unity application. The Unity XR SDK defines a common interface for subsystems so that all provider plug-ins implementing a feature generally work the same way in your app. Often you can change the active provider and rebuild your app to run on a different XR platform, as long as the platforms are largely similar.

The Unity Engine defines a set of fundamental XR subsystems. Unity packages provide additional subsytems. For example, the AR Subsystems package contains many of the AR-specific subsytem interfaces.

Unity 엔진에 정의된 보조 시스템은 다음과 같습니다.

Note: Unity applications typically do not interact with subsytems directly. Instead, the features provided by a subsytem are exposed to the application through an XR plug-in or package. For example, the ARMeshManager component in the AR Foundation package lets you add the meshes created by the Meshing subsystem to a scene.