A loaded graph is still your responsibility.

Compare the official GLTF and OBJ lessons as contracts: parse or load, inspect the returned hierarchy, frame its bounds, animate it, and release what the application owns.

The local GLB is a real GLTFLoader input; the OBJ/MTL lanes use deterministic inline fixtures so loader behavior is testable without external asset drift. Metrics are learning evidence, not whole-demo fidelity or a performance benchmark.

GLTFLoader docs · OBJLoader docs · MTLLoader docs · LoadingManager docs