From e13cf1e4c73f7fbca3c73a783789f19f6e36d6ad Mon Sep 17 00:00:00 2001
From: Tom Boullay <tom@famille-boullay.fr>
Date: Mon, 1 Jun 2026 14:46:57 +0200
Subject: [PATCH] fix(world): force per-frame sun shadow refresh

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.
---
 src/world/Lighting.tsx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/world/Lighting.tsx b/src/world/Lighting.tsx
index 2d49f48..4912046 100644
--- a/src/world/Lighting.tsx
+++ b/src/world/Lighting.tsx
@@ -63,6 +63,7 @@ export function Lighting(): React.JSX.Element {
 
     configureSunShadow(sun.current, sunTarget.current);
     configureRendererShadows(gl);
+    sun.current.shadow.needsUpdate = true;
   }, [gl]);
 
   useDebugFolder("Lighting", (folder) => {
@@ -114,6 +115,7 @@ export function Lighting(): React.JSX.Element {
       sun.current.color.set(LIGHTING_STATE.sunColor);
       sun.current.intensity = LIGHTING_STATE.sunIntensity;
       sun.current.updateMatrixWorld();
+      sun.current.shadow.needsUpdate = true;
     }
   });