From b0d4ab371bd55dd6f469bc0151d941edfa38e30d Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Wed, 15 Apr 2026 19:08:08 +0900
Subject: [PATCH] wip

---
 packages/frontend/src/utility/room/controller.ts | 2 +-
 packages/frontend/src/utility/room/engine.ts     | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/frontend/src/utility/room/controller.ts b/packages/frontend/src/utility/room/controller.ts
index 9e7a74b6ce..c052d9abbd 100644
--- a/packages/frontend/src/utility/room/controller.ts
+++ b/packages/frontend/src/utility/room/controller.ts
@@ -44,7 +44,7 @@ export class RoomController {
 			this.worker.postMessage({ type: 'init', canvas: offscreen, roomState: this.roomState.value }, [offscreen]);
 			this.isReady.value = true;
 		} else {
-			const babylonEngine = new BABYLON.WebGPUEngine(canvas);
+			const babylonEngine = new BABYLON.WebGPUEngine(canvas, { doNotHandleContextLost: true });
 			babylonEngine.compatibilityMode = false;
 			await babylonEngine.initAsync();
 			this.engine = new RoomEngine(this.roomState.value, { canvas, engine: babylonEngine });
diff --git a/packages/frontend/src/utility/room/engine.ts b/packages/frontend/src/utility/room/engine.ts
index a8f215dc2f..e2f82d5c3b 100644
--- a/packages/frontend/src/utility/room/engine.ts
+++ b/packages/frontend/src/utility/room/engine.ts
@@ -311,6 +311,7 @@ class ModelManager {
 		}
 		merged.freezeWorldMatrix();
 		merged.metadata = { ...this.root.metadata };
+		if (!this.hasTexture) merged.convertToUnIndexedMesh();
 		this.bakedMeshes = [merged];
 
 		this.bakedCallback?.([...this.bakedMeshes, ...excludeMeshes]);
@@ -757,6 +758,8 @@ export class RoomEngine extends EventEmitter<RoomEngineEvents> {
 			this.emit('loadingProgress', { progress: loadedCount / objects.length });
 		})));
 
+		this.scene.blockMaterialDirtyMechanism = true;
+
 		if (SNAPSHOT_RENDERING) {
 			this.sr.enableSnapshotRendering();
 		}