Tom Boullay
134c0aecb7
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Shadows occasionally failed to render on initial load and the Fabrik doorway sometimes blocked the player. Both issues are tracked down to geometry that mounts after Lighting: - Shadows: GLTFs and the merged static map mount imperatively after Lighting, so materials get compiled against a renderer state that pre-dates the final scene and bake a 'no shadow map' permutation, silently dropping shadows. A WebGL context-restore cycle fixes it, but is too invasive. New 'useShadowMapWarmup' hook replays it cheaply: once the scene mesh count has been stable for ~1s, it disposes the directional shadow map (three.js reallocates it on the next render) and marks every material 'needsUpdate' so shaders rebind to the freshly created shadow sampler. - Doorway: the door slab + its Solidify-modifier frame (children of the 'Thicken' parent in the LaFabrik GLTF) sat inside the doorway AABB and prevented the player from walking through. Stripped from the collision octree alongside the existing 'porte' slab; visual rendering is unaffected. Also: extract sun-relative-to-camera placement into a small helper, remove the temporary diagnostic logs, and document the shadow warmup in three-debugging.md.