Where the scene ambient term comes from (§68 "ambient"): the render root,
when it offers one — Scene.ambientLight is the engine's carrier. A root
that is not a Scene (a subtree handed straight to Renderer.render)
simply has no ambient term, and lit surfaces shade from the directional
light alone.
Where the scene ambient term comes from (§68 "ambient"): the render root, when it offers one —
Scene.ambientLightis the engine's carrier. A root that is not aScene(a subtree handed straight toRenderer.render) simply has no ambient term, and lit surfaces shade from the directional light alone.