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diff --git a/src/mesh/assimp-master/include/assimp/Bitmap.h b/src/mesh/assimp-master/include/assimp/Bitmap.h
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+++ b/src/mesh/assimp-master/include/assimp/Bitmap.h
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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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 Bitmap.h
+ *  @brief Defines bitmap format helper for textures
+ *
+ * Used for file formats which embed their textures into the model file.
+ */
+#pragma once
+#ifndef AI_BITMAP_H_INC
+#define AI_BITMAP_H_INC
+
+#ifdef __GNUC__
+#   pragma GCC system_header
+#endif
+
+#include "defs.h"
+#include <cstdint>
+#include <cstddef>
+
+struct aiTexture;
+
+namespace Assimp {
+
+class IOStream;
+
+// ---------------------------------------------------------------------------
+/** 
+ *  This class is used to store and write bitmap information.
+ */
+class ASSIMP_API Bitmap {
+protected:
+
+    struct Header {
+        uint16_t type;
+        uint32_t size;
+        uint16_t reserved1;
+        uint16_t reserved2;
+        uint32_t offset;
+
+        // We define the struct size because sizeof(Header) might return a wrong result because of structure padding.
+        static constexpr std::size_t header_size =
+            sizeof(type) +
+            sizeof(size) +
+            sizeof(reserved1) +
+            sizeof(reserved2) +
+            sizeof(offset);
+    };
+
+    struct DIB {
+        uint32_t size;
+        int32_t width;
+        int32_t height;
+        uint16_t planes;
+        uint16_t bits_per_pixel;
+        uint32_t compression;
+        uint32_t image_size;
+        int32_t x_resolution;
+        int32_t y_resolution;
+        uint32_t nb_colors;
+        uint32_t nb_important_colors;
+
+        // We define the struct size because sizeof(DIB) might return a wrong result because of structure padding.
+        static constexpr std::size_t dib_size =
+            sizeof(size) +
+            sizeof(width) +
+            sizeof(height) +
+            sizeof(planes) +
+            sizeof(bits_per_pixel) +
+            sizeof(compression) +
+            sizeof(image_size) +
+            sizeof(x_resolution) +
+            sizeof(y_resolution) +
+            sizeof(nb_colors) +
+            sizeof(nb_important_colors);
+    };
+
+    static constexpr std::size_t mBytesPerPixel = 4;
+
+public:
+    /// @brief  Will save an aiTexture instance as a bitmap.
+    /// @param texture  The pointer to the texture instance
+    /// @param file     The filename to save into.
+    /// @return true if successfully saved, false if not.
+    static bool Save(aiTexture* texture, IOStream* file);
+
+protected:
+    static void WriteHeader(Header& header, IOStream* file);
+    static void WriteDIB(DIB& dib, IOStream* file);
+    static void WriteData(aiTexture* texture, IOStream* file);
+};
+
+}
+
+#endif // AI_BITMAP_H_INC