From 1d0b485b02ed4d6c0de0f761acc8af653eb4b577 Mon Sep 17 00:00:00 2001
From: ousttrue <ousttrue@gmail.com>
Date: Wed, 17 Mar 2021 19:23:56 +0900
Subject: [PATCH] rename material

---
 Assets/UniGLTF/Runtime/UniGLTF/IO/GltfParser.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/GltfParser.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/GltfParser.cs
index c53a9c105..3f706f4e0 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/GltfParser.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/GltfParser.cs
@@ -275,11 +275,17 @@ namespace UniGLTF
         public void FixMaterialNameUnique()
         {
             var used = new HashSet<string>();
-            foreach (var material in GLTF.materials)
+            for (int i = 0; i < GLTF.materials.Count; ++i)
             {
+                var material = GLTF.materials[i];
                 var originalName = material.name;
                 int j = 2;
 
+                if (string.IsNullOrEmpty(material.name))
+                {
+                    material.name = $"material_{i}";
+                }
+
                 while (true)
                 {
                     if (used.Add(material.name))