From a59a1ed1a3ed5a5f9283b88a15a425fdb8c61f11 Mon Sep 17 00:00:00 2001
From: 0b5vr <0b5vr@0b5vr.com>
Date: Mon, 20 May 2024 17:28:32 +0900
Subject: [PATCH] fix: MToon, Fix normal mapping when other textures are not
 specified

See: https://github.com/pixiv/three-vrm/pull/1384#issuecomment-2117311809
---
 packages/three-vrm-materials-mtoon/src/MToonMaterial.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/three-vrm-materials-mtoon/src/MToonMaterial.ts b/packages/three-vrm-materials-mtoon/src/MToonMaterial.ts
index b8c002ad..3d198669 100644
--- a/packages/three-vrm-materials-mtoon/src/MToonMaterial.ts
+++ b/packages/three-vrm-materials-mtoon/src/MToonMaterial.ts
@@ -606,6 +606,7 @@ export class MToonMaterial extends THREE.ShaderMaterial {
     const useUvInVert = this.outlineWidthMultiplyTexture !== null;
     const useUvInFrag =
       this.map !== null ||
+      this.normalMap !== null ||
       this.emissiveMap !== null ||
       this.shadeMultiplyTexture !== null ||
       this.shadingShiftTexture !== null ||