I'm trying to develop an immersive visionOS app, which you can move an Entity having a PerspectiveCamera as its child in immersive space, and render the camera view on 2D window.
According to this thread, this seems to can be achieved using RealityRenderer. But when I added the scene entity loaded from realityKitContentBundle to realityRenderer.entities, I needed to clone all entities of the scene, otherwise all entities in the immersive space will disappear.
@Observable
@MainActor
final class OffscreenRenderModel {
private let renderer: RealityRenderer
private let colorTexture: MTLTexture
init(scene: Entity) throws {
renderer = try RealityRenderer()
// If not clone entities in the scene, all entities in the immersive space will disappear
renderer.entities.append(scene.clone(recursive: true))
let camera = PerspectiveCamera()
renderer.activeCamera = camera
renderer.entities.append(camera)
...
}
}
Is this the expected behavior? Or is there any other way to do this (move camera in immersive space and render its output on 2D window)?
Here is my sample code:
https://github.com/TAATHub/RealityKitPerspectiveCamera