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diff --git a/src/mesh/assimp-master/port/dAssimp/assimp/texture.d b/src/mesh/assimp-master/port/dAssimp/assimp/texture.d
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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (ASSIMP)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2020, ASSIMP Development 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 Development 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.
+---------------------------------------------------------------------------
+*/
+
+/**
+ * Contains helper structures to handle textures in Assimp.
+ *
+ * Used for file formats which embed their textures into the model file.
+ * Supported are both normal textures, which are stored as uncompressed pixels,
+ * and "compressed" textures, which are stored in a file format such as PNG or
+ * TGA.
+ */
+module assimp.texture;
+
+extern ( C ) {
+   /**
+    * Helper structure to represent a texel in a ARGB8888 format.
+    *
+    * Used by aiTexture.
+    */
+   struct aiTexel {
+   align ( 1 ):
+      ubyte b, g, r, a;
+   }
+
+   /**
+    * Helper structure to describe an embedded texture.
+    *
+    * Usually textures are contained in external files but some file formats
+    * embed them directly in the model file. There are two types of
+    * embedded textures:
+    *
+    * <em>1. Uncompressed textures</em>: The color data is given in an
+    * uncompressed format.
+    *
+    * <em>2. Compressed textures</em> stored in a file format like PNG or JPEG.
+    * The raw file bytes are given so the application must utilize an image
+    * decoder (e.g. DevIL) to get access to the actual color data.
+    */
+   struct aiTexture {
+      /**
+       * Width of the texture, in pixels.
+       *
+       * If <code>mHeight</code> is zero the texture is compressed in a format
+       * like JPEG. In this case, this value specifies the size of the memory
+       * area <code>pcData</code> is pointing to, in bytes.
+       */
+      uint mWidth;
+
+      /**
+       * Height of the texture, in pixels.
+       *
+       * If this value is zero, <code>pcData</code> points to an compressed
+       * texture in any format (e.g. JPEG).
+       */
+      uint mHeight;
+
+      /**
+       * A hint from the loader to make it easier for applications to determine
+       * the type of embedded compressed textures.
+       *
+       * If <code>mHeight</code> is not 0, this member is undefined. Otherwise
+       * it is set set to '\0\0\0\0' if the loader has no additional
+       * information about the texture file format used, or the file extension
+       * of the format without a trailing dot. If there are multiple file
+       * extensions for a format, the shortest extension is chosen (JPEG maps
+       * to 'jpg', not to 'jpeg'). E.g. 'dds\0', 'pcx\0', 'jpg\0'. All
+       * characters are lower-case. The fourth byte will always be '\0'.
+       */
+      char achFormatHint[4];
+
+      /**
+       * Data of the texture.
+       *
+       * Points to an array of <code>mWidth * mHeight</code>
+       * <code>aiTexel</code>s. The format of the texture data is always
+       * ARGB8888 to make the implementation for user of the library as easy as
+       * possible.
+       *
+       * If <code>mHeight</code> is 0, this is a pointer to a memory buffer of
+       * size <code>mWidth</code> containing the compressed texture data.
+       */
+      aiTexel* pcData;
+   }
+}