From 50d5539f8d11dc29a3fb27e35bcdec1a9b109d07 Mon Sep 17 00:00:00 2001
From: ousttrue <ousttrue@gmail.com>
Date: Tue, 23 Mar 2021 13:46:11 +0900
Subject: [PATCH] GltfTextureEnumerator.Enumerate uniqueness

---
 .../Runtime/UniGLTF/IO/MaterialIO/GltfTextureEnumerator.cs   | 5 ++++-
 Assets/UniGLTF/Tests/UniGLTF/GltfLoadTests.cs                | 4 ----
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/GltfTextureEnumerator.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/GltfTextureEnumerator.cs
index 074816122..15147905b 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/GltfTextureEnumerator.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MaterialIO/GltfTextureEnumerator.cs
@@ -52,11 +52,14 @@ namespace UniGLTF
 
         public static IEnumerable<GetTextureParam> Enumerate(glTF gltf)
         {
+            var used = new HashSet<GetTextureParam>();
             foreach (var material in gltf.materials)
             {
                 foreach (var textureInfo in EnumerateTextures(gltf, material))
                 {
-                    yield return textureInfo;
+                    if(used.Add(textureInfo)){
+                        yield return textureInfo;
+                    }
                 }
             }
         }
diff --git a/Assets/UniGLTF/Tests/UniGLTF/GltfLoadTests.cs b/Assets/UniGLTF/Tests/UniGLTF/GltfLoadTests.cs
index 7f10c96f8..e27914c53 100644
--- a/Assets/UniGLTF/Tests/UniGLTF/GltfLoadTests.cs
+++ b/Assets/UniGLTF/Tests/UniGLTF/GltfLoadTests.cs
@@ -101,10 +101,6 @@ namespace UniGLTF
             // should unique
             var gltfTextures = GltfTextureEnumerator.Enumerate(parser.GLTF);
             var distinct = gltfTextures.Distinct().ToArray();
-            if (!gltfTextures.SequenceEqual(distinct))
-            {
-                var a = 0;
-            }
             Assert.True(gltfTextures.SequenceEqual(distinct));
         }