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diff --git a/thirdparty/assimp/code/MakeVerboseFormat.h b/thirdparty/assimp/code/MakeVerboseFormat.h
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+++ b/thirdparty/assimp/code/MakeVerboseFormat.h
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2019, 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 Defines a post processing step to bring a given scene
+ into the verbose format that is expected by most postprocess steps.
+ This is the inverse of the "JoinIdenticalVertices" step. */
+#ifndef AI_MAKEVERBOSEFORMAT_H_INC
+#define AI_MAKEVERBOSEFORMAT_H_INC
+
+#include "BaseProcess.h"
+struct aiMesh;
+
+namespace Assimp    {
+
+// ---------------------------------------------------------------------------
+/** MakeVerboseFormatProcess: Class to convert an asset to the verbose
+ *  format which is expected by most postprocess steps.
+ *
+ * This is the inverse of what the "JoinIdenticalVertices" step is doing.
+ * This step has no official flag (since it wouldn't make sense to run it
+ * during import). It is intended for applications intending to modify the
+ * returned aiScene. After this step has been executed, they can execute
+ * other postprocess steps on the data. The code might also be useful to
+ * quickly adapt code that doesn't result in a verbose representation of
+ * the scene data.
+ * The step has been added because it was required by the viewer, however
+ * it has been moved to the main library since others might find it
+ * useful, too. */
+class ASSIMP_API_WINONLY MakeVerboseFormatProcess : public BaseProcess
+{
+public:
+
+
+    MakeVerboseFormatProcess();
+    ~MakeVerboseFormatProcess();
+
+public:
+
+    // -------------------------------------------------------------------
+    /** Returns whether the processing step is present in the given flag field.
+    * @param pFlags The processing flags the importer was called with. A bitwise
+    *   combination of #aiPostProcessSteps.
+    * @return true if the process is present in this flag fields, false if not */
+    bool IsActive( unsigned int /*pFlags*/ ) const
+    {
+        // NOTE: There is no direct flag that corresponds to
+        // this postprocess step.
+        return false;
+    }
+
+    // -------------------------------------------------------------------
+    /** Executes the post processing step on the given imported data.
+    * At the moment a process is not supposed to fail.
+    * @param pScene The imported data to work at. */
+    void Execute( aiScene* pScene);
+
+
+private:
+
+    //! Apply the postprocess step to a given submesh
+    bool MakeVerboseFormat (aiMesh* pcMesh);
+};
+
+} // end of namespace Assimp
+
+#endif // !!AI_KILLNORMALPROCESS_H_INC