OptionalbackgroundOptionalcameraOptionalcreateInjected orbit controls (tests).
OptionalcreateInjected GL (tests / exotic hosts).
OptionalfilamentOptionalinteractionOptionallimitsOptionalloadersOptionalonStaged loading-progress (DD-024); also mirrored into state.progress.
Optionalrender
Controller options — the engine's ModelViewerOptions minus the canvas (bound later). The
onProgresscallback is still delivered to the consumer AND folded intostate.progress.