The scene root (LuxarScene), for probe resolution and physical-mesh hiding.
Push the cube camera's params to the material manager (fov 90°, square buffer).
Restore the main camera's params (the ordinary camera-materials push).
Whether the loader has settled (no update sweep, load pass or LOD load in flight).
OptionalcaptureWhether a live capture can run without delaying worker-pool initialization.
Base URL of the store, for a store-relative hdri url.
OptionalrequestThe environment changed outside any frame (an HDRI finished loading): ask for a redraw. Optional — omitted in tests and by embedders that render on their own schedule.
What a live capture and HDRI URL resolution need from the running app — attached by the init pipeline once those pieces exist. Without it,
scenefalls back to the room.