Shadows still go missing intermittently despite the per-frame
needsUpdate fix. Add temporary console logs to narrow down the cause:
- [shadow:mount]: one-shot snapshot of renderer shadow flags and a
scene.traverse count of meshes with castShadow / receiveShadow at
Lighting mount time.
- [shadow:tick]: every 2s during useFrame, log shadow map enabled flag,
autoUpdate, sun.castShadow, sun intensity, shadow map texture
presence, sun and target world positions, and renderer draw calls.
To be removed once the root cause is identified.
Restore sun.shadow.needsUpdate = true at mount and in useFrame
after updateMatrixWorld. Lost during SHADOW_CONFIG centralization.
Matches develop's belt-and-suspenders pattern; autoUpdate alone
is insufficient because the sun follows the camera (matrix dirty
every frame) and three.js can skip shadow map re-render.
- Extract SHADOW_CONFIG into lightingConfig.ts (bias=0, normalBias=0,
cameraSize=95) matching the historically working values from develop.
- Drop SceneShadowWarmup; rely on sun.shadow.autoUpdate=true for
steady-state refresh.
- Enable cloud castShadow and traverse Ebike meshes for cast/receive.
Reverts the manual shadow refresh throttle introduced in 6d58b90 which
prevented shadows from rendering. Renderer and sun shadow now use
autoUpdate=true and a per-frame needsUpdate=true pulse, matching the
behaviour that produced visible shadows before that commit.
Tom Boullay