From 284ea099cb0b6924ceee14d061d68b1ed8db7c92 Mon Sep 17 00:00:00 2001
From: ousttrue <ousttrue@gmail.com>
Date: Wed, 24 Feb 2021 21:44:25 +0900
Subject: [PATCH] fix runtime

---
 .../Runtime/UniGLTF/IO/MaterialLoader/MaterialFactory.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialLoader/MaterialFactory.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialLoader/MaterialFactory.cs
index b3b4048b4..75f100b01 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialLoader/MaterialFactory.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialLoader/MaterialFactory.cs
@@ -13,10 +13,13 @@ namespace UniGLTF
         Dictionary<string, Material> m_externalMap;
         public bool TryGetExternal(int index, out Material external)
         {
-            var gltfMaterial = m_gltf.materials[index];
-            if (m_externalMap.TryGetValue(gltfMaterial.name, out external))
+            if (m_externalMap != null)
             {
-                return true;
+                var gltfMaterial = m_gltf.materials[index];
+                if (m_externalMap.TryGetValue(gltfMaterial.name, out external))
+                {
+                    return true;
+                }
             }
 
             external = default;