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diff --git a/thirdparty/assimp/code/Common/material.cpp b/thirdparty/assimp/code/Common/material.cpp
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+++ b/thirdparty/assimp/code/Common/material.cpp
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2020, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/// @file material.cpp
+/** Implement common material related functions. */
+
+#include <assimp/ai_assert.h>
+#include <assimp/material.h>
+
+// -------------------------------------------------------------------------------
+const char* TextureTypeToString(aiTextureType in)
+{
+    switch (in)
+    {
+    case aiTextureType_NONE:
+        return "n/a";
+    case aiTextureType_DIFFUSE:
+        return "Diffuse";
+    case aiTextureType_SPECULAR:
+        return "Specular";
+    case aiTextureType_AMBIENT:
+        return "Ambient";
+    case aiTextureType_EMISSIVE:
+        return "Emissive";
+    case aiTextureType_OPACITY:
+        return "Opacity";
+    case aiTextureType_NORMALS:
+        return "Normals";
+    case aiTextureType_HEIGHT:
+        return "Height";
+    case aiTextureType_SHININESS:
+        return "Shininess";
+    case aiTextureType_DISPLACEMENT:
+        return "Displacement";
+    case aiTextureType_LIGHTMAP:
+        return "Lightmap";
+    case aiTextureType_REFLECTION:
+        return "Reflection";
+    case aiTextureType_BASE_COLOR:
+        return "BaseColor";
+    case aiTextureType_NORMAL_CAMERA:
+        return "NormalCamera";
+    case aiTextureType_EMISSION_COLOR:
+        return "EmissionColor";
+    case aiTextureType_METALNESS:
+        return "Metalness";
+    case aiTextureType_DIFFUSE_ROUGHNESS:
+        return "DiffuseRoughness";
+    case aiTextureType_AMBIENT_OCCLUSION:
+        return "AmbientOcclusion";
+    case aiTextureType_UNKNOWN:
+        return "Unknown";
+    default:
+        break;
+    }
+    ai_assert(false);
+    return "BUG";
+}