add assimp submodule

1 files changed, 765 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/MDL/MDLMaterialLoader.cpp b/src/mesh/assimp-master/code/AssetLib/MDL/MDLMaterialLoader.cpp
new file mode 100644
index 0000000..eebb9d1
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/MDL/MDLMaterialLoader.cpp
@@ -0,0 +1,765 @@
+/*
+---------------------------------------------------------------------------
+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 Implementation of the material part of the MDL importer class */
+
+#ifndef ASSIMP_BUILD_NO_MDL_IMPORTER
+
+#include "MDLDefaultColorMap.h"
+#include "MDLLoader.h"
+
+#include <assimp/StringUtils.h>
+#include <assimp/qnan.h>
+#include <assimp/scene.h>
+#include <assimp/texture.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/IOSystem.hpp>
+
+#include <memory>
+
+using namespace Assimp;
+
+static aiTexel *const bad_texel = reinterpret_cast<aiTexel *>(SIZE_MAX);
+
+// ------------------------------------------------------------------------------------------------
+// Find a suitable palette file or take the default one
+void MDLImporter::SearchPalette(const unsigned char **pszColorMap) {
+    // now try to find the color map in the current directory
+    IOStream *pcStream = mIOHandler->Open(configPalette, "rb");
+
+    const unsigned char *szColorMap = (const unsigned char *)::g_aclrDefaultColorMap;
+    if (pcStream) {
+        if (pcStream->FileSize() >= 768) {
+            size_t len = 256 * 3;
+            unsigned char *colorMap = new unsigned char[len];
+            szColorMap = colorMap;
+            pcStream->Read(colorMap, len, 1);
+            ASSIMP_LOG_INFO("Found valid colormap.lmp in directory. "
+                            "It will be used to decode embedded textures in palletized formats.");
+        }
+        delete pcStream;
+        pcStream = nullptr;
+    }
+    *pszColorMap = szColorMap;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Free the palette again
+void MDLImporter::FreePalette(const unsigned char *szColorMap) {
+    if (szColorMap != (const unsigned char *)::g_aclrDefaultColorMap) {
+        delete[] szColorMap;
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Check whether we can replace a texture with a single color
+aiColor4D MDLImporter::ReplaceTextureWithColor(const aiTexture *pcTexture) {
+    ai_assert(nullptr != pcTexture);
+
+    aiColor4D clrOut;
+    clrOut.r = get_qnan();
+    if (!pcTexture->mHeight || !pcTexture->mWidth)
+        return clrOut;
+
+    const unsigned int iNumPixels = pcTexture->mHeight * pcTexture->mWidth;
+    const aiTexel *pcTexel = pcTexture->pcData + 1;
+    const aiTexel *const pcTexelEnd = &pcTexture->pcData[iNumPixels];
+
+    while (pcTexel != pcTexelEnd) {
+        if (*pcTexel != *(pcTexel - 1)) {
+            pcTexel = nullptr;
+            break;
+        }
+        ++pcTexel;
+    }
+    if (pcTexel) {
+        clrOut.r = pcTexture->pcData->r / 255.0f;
+        clrOut.g = pcTexture->pcData->g / 255.0f;
+        clrOut.b = pcTexture->pcData->b / 255.0f;
+        clrOut.a = pcTexture->pcData->a / 255.0f;
+    }
+    return clrOut;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Read a texture from a MDL3 file
+void MDLImporter::CreateTextureARGB8_3DGS_MDL3(const unsigned char *szData) {
+    const MDL::Header *pcHeader = (const MDL::Header *)mBuffer; //the endianness is already corrected in the InternReadFile_3DGS_MDL345 function
+
+    VALIDATE_FILE_SIZE(szData + pcHeader->skinwidth *
+                                        pcHeader->skinheight);
+
+    // allocate a new texture object
+    aiTexture *pcNew = new aiTexture();
+    pcNew->mWidth = pcHeader->skinwidth;
+    pcNew->mHeight = pcHeader->skinheight;
+
+    if(pcNew->mWidth != 0 && pcNew->mHeight > UINT_MAX/pcNew->mWidth) {
+        throw DeadlyImportError("Invalid MDL file. A texture is too big.");
+    }
+    pcNew->pcData = new aiTexel[pcNew->mWidth * pcNew->mHeight];
+
+    const unsigned char *szColorMap;
+    this->SearchPalette(&szColorMap);
+
+    // copy texture data
+    for (unsigned int i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+        const unsigned char val = szData[i];
+        const unsigned char *sz = &szColorMap[val * 3];
+
+        pcNew->pcData[i].a = 0xFF;
+        pcNew->pcData[i].r = *sz++;
+        pcNew->pcData[i].g = *sz++;
+        pcNew->pcData[i].b = *sz;
+    }
+
+    FreePalette(szColorMap);
+
+    // store the texture
+    aiTexture **pc = this->pScene->mTextures;
+    this->pScene->mTextures = new aiTexture *[pScene->mNumTextures + 1];
+    for (unsigned int i = 0; i < pScene->mNumTextures; ++i)
+        pScene->mTextures[i] = pc[i];
+
+    pScene->mTextures[this->pScene->mNumTextures] = pcNew;
+    pScene->mNumTextures++;
+    delete[] pc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Read a texture from a MDL4 file
+void MDLImporter::CreateTexture_3DGS_MDL4(const unsigned char *szData,
+        unsigned int iType,
+        unsigned int *piSkip) {
+    ai_assert(nullptr != piSkip);
+
+    const MDL::Header *pcHeader = (const MDL::Header *)mBuffer; //the endianness is already corrected in the InternReadFile_3DGS_MDL345 function
+
+    if (iType == 1 || iType > 3) {
+        ASSIMP_LOG_ERROR("Unsupported texture file format");
+        return;
+    }
+
+    const bool bNoRead = *piSkip == UINT_MAX;
+
+    // allocate a new texture object
+    aiTexture *pcNew = new aiTexture();
+    pcNew->mWidth = pcHeader->skinwidth;
+    pcNew->mHeight = pcHeader->skinheight;
+
+    if (bNoRead) pcNew->pcData = bad_texel;
+    ParseTextureColorData(szData, iType, piSkip, pcNew);
+
+    // store the texture
+    if (!bNoRead) {
+        if (!this->pScene->mNumTextures) {
+            pScene->mNumTextures = 1;
+            pScene->mTextures = new aiTexture *[1];
+            pScene->mTextures[0] = pcNew;
+        } else {
+            aiTexture **pc = pScene->mTextures;
+            pScene->mTextures = new aiTexture *[pScene->mNumTextures + 1];
+            for (unsigned int i = 0; i < this->pScene->mNumTextures; ++i)
+                pScene->mTextures[i] = pc[i];
+            pScene->mTextures[pScene->mNumTextures] = pcNew;
+            pScene->mNumTextures++;
+            delete[] pc;
+        }
+    } else {
+        pcNew->pcData = nullptr;
+        delete pcNew;
+    }
+    return;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Load color data of a texture and convert it to our output format
+void MDLImporter::ParseTextureColorData(const unsigned char *szData,
+        unsigned int iType,
+        unsigned int *piSkip,
+        aiTexture *pcNew) {
+    const bool do_read = bad_texel != pcNew->pcData;
+
+    // allocate storage for the texture image
+    if (do_read) {
+        if(pcNew->mWidth != 0 && pcNew->mHeight > UINT_MAX/pcNew->mWidth) {
+            throw DeadlyImportError("Invalid MDL file. A texture is too big.");
+        }
+        pcNew->pcData = new aiTexel[pcNew->mWidth * pcNew->mHeight];
+    }
+
+    // R5G6B5 format (with or without MIPs)
+    // ****************************************************************
+    if (2 == iType || 10 == iType) {
+        VALIDATE_FILE_SIZE(szData + pcNew->mWidth * pcNew->mHeight * 2);
+
+        // copy texture data
+        unsigned int i;
+        if (do_read) {
+            for (i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+                MDL::RGB565 val = ((MDL::RGB565 *)szData)[i];
+                AI_SWAP2(val);
+
+                pcNew->pcData[i].a = 0xFF;
+                pcNew->pcData[i].r = (unsigned char)val.b << 3;
+                pcNew->pcData[i].g = (unsigned char)val.g << 2;
+                pcNew->pcData[i].b = (unsigned char)val.r << 3;
+            }
+        } else {
+            i = pcNew->mWidth * pcNew->mHeight;
+        }
+        *piSkip = i * 2;
+
+        // apply MIP maps
+        if (10 == iType) {
+            *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 1;
+            VALIDATE_FILE_SIZE(szData + *piSkip);
+        }
+    }
+    // ARGB4 format (with or without MIPs)
+    // ****************************************************************
+    else if (3 == iType || 11 == iType) {
+        VALIDATE_FILE_SIZE(szData + pcNew->mWidth * pcNew->mHeight * 4);
+
+        // copy texture data
+        unsigned int i;
+        if (do_read) {
+            for (i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+                MDL::ARGB4 val = ((MDL::ARGB4 *)szData)[i];
+                AI_SWAP2(val);
+
+                pcNew->pcData[i].a = (unsigned char)val.a << 4;
+                pcNew->pcData[i].r = (unsigned char)val.r << 4;
+                pcNew->pcData[i].g = (unsigned char)val.g << 4;
+                pcNew->pcData[i].b = (unsigned char)val.b << 4;
+            }
+        } else
+            i = pcNew->mWidth * pcNew->mHeight;
+        *piSkip = i * 2;
+
+        // apply MIP maps
+        if (11 == iType) {
+            *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 1;
+            VALIDATE_FILE_SIZE(szData + *piSkip);
+        }
+    }
+    // RGB8 format (with or without MIPs)
+    // ****************************************************************
+    else if (4 == iType || 12 == iType) {
+        VALIDATE_FILE_SIZE(szData + pcNew->mWidth * pcNew->mHeight * 3);
+
+        // copy texture data
+        unsigned int i;
+        if (do_read) {
+            for (i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+                const unsigned char *_szData = &szData[i * 3];
+
+                pcNew->pcData[i].a = 0xFF;
+                pcNew->pcData[i].b = *_szData++;
+                pcNew->pcData[i].g = *_szData++;
+                pcNew->pcData[i].r = *_szData;
+            }
+        } else
+            i = pcNew->mWidth * pcNew->mHeight;
+
+        // apply MIP maps
+        *piSkip = i * 3;
+        if (12 == iType) {
+            *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) * 3;
+            VALIDATE_FILE_SIZE(szData + *piSkip);
+        }
+    }
+    // ARGB8 format (with ir without MIPs)
+    // ****************************************************************
+    else if (5 == iType || 13 == iType) {
+        VALIDATE_FILE_SIZE(szData + pcNew->mWidth * pcNew->mHeight * 4);
+
+        // copy texture data
+        unsigned int i;
+        if (do_read) {
+            for (i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+                const unsigned char *_szData = &szData[i * 4];
+
+                pcNew->pcData[i].b = *_szData++;
+                pcNew->pcData[i].g = *_szData++;
+                pcNew->pcData[i].r = *_szData++;
+                pcNew->pcData[i].a = *_szData;
+            }
+        } else {
+            i = pcNew->mWidth * pcNew->mHeight;
+        }
+
+        // apply MIP maps
+        *piSkip = i << 2;
+        if (13 == iType) {
+            *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 2;
+        }
+    }
+    // palletized 8 bit texture. As for Quake 1
+    // ****************************************************************
+    else if (0 == iType) {
+        VALIDATE_FILE_SIZE(szData + pcNew->mWidth * pcNew->mHeight);
+
+        // copy texture data
+        unsigned int i;
+        if (do_read) {
+
+            const unsigned char *szColorMap;
+            SearchPalette(&szColorMap);
+
+            for (i = 0; i < pcNew->mWidth * pcNew->mHeight; ++i) {
+                const unsigned char val = szData[i];
+                const unsigned char *sz = &szColorMap[val * 3];
+
+                pcNew->pcData[i].a = 0xFF;
+                pcNew->pcData[i].r = *sz++;
+                pcNew->pcData[i].g = *sz++;
+                pcNew->pcData[i].b = *sz;
+            }
+            this->FreePalette(szColorMap);
+
+        } else
+            i = pcNew->mWidth * pcNew->mHeight;
+        *piSkip = i;
+
+        // FIXME: Also support for MIP maps?
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get a texture from a MDL5 file
+void MDLImporter::CreateTexture_3DGS_MDL5(const unsigned char *szData,
+        unsigned int iType,
+        unsigned int *piSkip) {
+    ai_assert(nullptr != piSkip);
+    bool bNoRead = *piSkip == UINT_MAX;
+
+    // allocate a new texture object
+    aiTexture *pcNew = new aiTexture();
+
+    VALIDATE_FILE_SIZE(szData + 8);
+
+    // first read the size of the texture
+    pcNew->mWidth = *((uint32_t *)szData);
+    AI_SWAP4(pcNew->mWidth);
+    szData += sizeof(uint32_t);
+
+    pcNew->mHeight = *((uint32_t *)szData);
+    AI_SWAP4(pcNew->mHeight);
+    szData += sizeof(uint32_t);
+
+    if (bNoRead) {
+        pcNew->pcData = bad_texel;
+    }
+
+    // this should not occur - at least the docs say it shouldn't.
+    // however, one can easily try out what MED does if you have
+    // a model with a DDS texture and export it to MDL5 ...
+    // yeah, it embeds the DDS file.
+    if (6 == iType) {
+        // this is a compressed texture in DDS format
+        *piSkip = pcNew->mWidth;
+        VALIDATE_FILE_SIZE(szData + *piSkip);
+
+        if (!bNoRead) {
+            // place a hint and let the application know that this is a DDS file
+            pcNew->mHeight = 0;
+            pcNew->achFormatHint[0] = 'd';
+            pcNew->achFormatHint[1] = 'd';
+            pcNew->achFormatHint[2] = 's';
+            pcNew->achFormatHint[3] = '\0';
+
+            pcNew->pcData = (aiTexel *)new unsigned char[pcNew->mWidth];
+            ::memcpy(pcNew->pcData, szData, pcNew->mWidth);
+        }
+    } else {
+        // parse the color data of the texture
+        ParseTextureColorData(szData, iType, piSkip, pcNew);
+    }
+    *piSkip += sizeof(uint32_t) * 2;
+
+    if (!bNoRead) {
+        // store the texture
+        if (!this->pScene->mNumTextures) {
+            pScene->mNumTextures = 1;
+            pScene->mTextures = new aiTexture *[1];
+            pScene->mTextures[0] = pcNew;
+        } else {
+            aiTexture **pc = pScene->mTextures;
+            pScene->mTextures = new aiTexture *[pScene->mNumTextures + 1];
+            for (unsigned int i = 0; i < pScene->mNumTextures; ++i)
+                this->pScene->mTextures[i] = pc[i];
+
+            pScene->mTextures[pScene->mNumTextures] = pcNew;
+            pScene->mNumTextures++;
+            delete[] pc;
+        }
+    } else {
+        pcNew->pcData = nullptr;
+        delete pcNew;
+    }
+    return;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get a skin from a MDL7 file - more complex than all other subformats
+void MDLImporter::ParseSkinLump_3DGS_MDL7(
+        const unsigned char *szCurrent,
+        const unsigned char **szCurrentOut,
+        aiMaterial *pcMatOut,
+        unsigned int iType,
+        unsigned int iWidth,
+        unsigned int iHeight) {
+    std::unique_ptr<aiTexture> pcNew;
+
+    // get the type of the skin
+    unsigned int iMasked = (unsigned int)(iType & 0xF);
+
+    if (0x1 == iMasked) {
+        // ***** REFERENCE TO ANOTHER SKIN INDEX *****
+        int referrer = (int)iWidth;
+        pcMatOut->AddProperty<int>(&referrer, 1, AI_MDL7_REFERRER_MATERIAL);
+    } else if (0x6 == iMasked) {
+        // ***** EMBEDDED DDS FILE *****
+        if (1 != iHeight) {
+            ASSIMP_LOG_WARN("Found a reference to an embedded DDS texture, "
+                            "but texture height is not equal to 1, which is not supported by MED");
+        }
+        if (iWidth == 0) {
+            ASSIMP_LOG_ERROR("Found a reference to an embedded DDS texture, but texture width is zero, aborting import.");
+            return;
+        }
+        
+        pcNew.reset(new aiTexture);
+        pcNew->mHeight = 0;
+        pcNew->mWidth = iWidth;
+
+        // place a proper format hint
+        pcNew->achFormatHint[0] = 'd';
+        pcNew->achFormatHint[1] = 'd';
+        pcNew->achFormatHint[2] = 's';
+        pcNew->achFormatHint[3] = '\0';
+
+        pcNew->pcData = (aiTexel *)new unsigned char[pcNew->mWidth];
+        memcpy(pcNew->pcData, szCurrent, pcNew->mWidth);
+        szCurrent += iWidth;
+    } else if (0x7 == iMasked) {
+        // ***** REFERENCE TO EXTERNAL FILE *****
+        if (1 != iHeight) {
+            ASSIMP_LOG_WARN("Found a reference to an external texture, "
+                            "but texture height is not equal to 1, which is not supported by MED");
+        }
+
+        aiString szFile;
+        const size_t iLen = strlen((const char *)szCurrent);
+        size_t iLen2 = iLen + 1;
+        iLen2 = iLen2 > MAXLEN ? MAXLEN : iLen2;
+        memcpy(szFile.data, (const char *)szCurrent, iLen2);
+        szFile.length = (ai_uint32)iLen;
+
+        szCurrent += iLen2;
+
+        // place this as diffuse texture
+        pcMatOut->AddProperty(&szFile, AI_MATKEY_TEXTURE_DIFFUSE(0));
+    } else if (iMasked || !iType || (iType && iWidth && iHeight)) {
+        pcNew.reset(new aiTexture());
+        if (!iHeight || !iWidth) {
+            ASSIMP_LOG_WARN("Found embedded texture, but its width "
+                            "an height are both 0. Is this a joke?");
+
+            // generate an empty chess pattern
+            pcNew->mWidth = pcNew->mHeight = 8;
+            pcNew->pcData = new aiTexel[64];
+            for (unsigned int x = 0; x < 8; ++x) {
+                for (unsigned int y = 0; y < 8; ++y) {
+                    const bool bSet = ((0 == x % 2 && 0 != y % 2) ||
+                                       (0 != x % 2 && 0 == y % 2));
+
+                    aiTexel *pc = &pcNew->pcData[y * 8 + x];
+                    pc->r = pc->b = pc->g = (bSet ? 0xFF : 0);
+                    pc->a = 0xFF;
+                }
+            }
+        } else {
+            // it is a standard color texture. Fill in width and height
+            // and call the same function we used for loading MDL5 files
+
+            pcNew->mWidth = iWidth;
+            pcNew->mHeight = iHeight;
+
+            unsigned int iSkip = 0;
+            ParseTextureColorData(szCurrent, iMasked, &iSkip, pcNew.get());
+
+            // skip length of texture data
+            szCurrent += iSkip;
+        }
+    }
+
+    // sometimes there are MDL7 files which have a monochrome
+    // texture instead of material colors ... possible they have
+    // been converted to MDL7 from other formats, such as MDL5
+    aiColor4D clrTexture;
+    if (pcNew)
+        clrTexture = ReplaceTextureWithColor(pcNew.get());
+    else
+        clrTexture.r = get_qnan();
+
+    // check whether a material definition is contained in the skin
+    if (iType & AI_MDL7_SKINTYPE_MATERIAL) {
+        BE_NCONST MDL::Material_MDL7 *pcMatIn = (BE_NCONST MDL::Material_MDL7 *)szCurrent;
+        szCurrent = (unsigned char *)(pcMatIn + 1);
+        VALIDATE_FILE_SIZE(szCurrent);
+
+        aiColor3D clrTemp;
+
+#define COLOR_MULTIPLY_RGB()         \
+    if (is_not_qnan(clrTexture.r)) { \
+        clrTemp.r *= clrTexture.r;   \
+        clrTemp.g *= clrTexture.g;   \
+        clrTemp.b *= clrTexture.b;   \
+    }
+
+        // read diffuse color
+        clrTemp.r = pcMatIn->Diffuse.r;
+        AI_SWAP4(clrTemp.r);
+        clrTemp.g = pcMatIn->Diffuse.g;
+        AI_SWAP4(clrTemp.g);
+        clrTemp.b = pcMatIn->Diffuse.b;
+        AI_SWAP4(clrTemp.b);
+        COLOR_MULTIPLY_RGB();
+        pcMatOut->AddProperty<aiColor3D>(&clrTemp, 1, AI_MATKEY_COLOR_DIFFUSE);
+
+        // read specular color
+        clrTemp.r = pcMatIn->Specular.r;
+        AI_SWAP4(clrTemp.r);
+        clrTemp.g = pcMatIn->Specular.g;
+        AI_SWAP4(clrTemp.g);
+        clrTemp.b = pcMatIn->Specular.b;
+        AI_SWAP4(clrTemp.b);
+        COLOR_MULTIPLY_RGB();
+        pcMatOut->AddProperty<aiColor3D>(&clrTemp, 1, AI_MATKEY_COLOR_SPECULAR);
+
+        // read ambient color
+        clrTemp.r = pcMatIn->Ambient.r;
+        AI_SWAP4(clrTemp.r);
+        clrTemp.g = pcMatIn->Ambient.g;
+        AI_SWAP4(clrTemp.g);
+        clrTemp.b = pcMatIn->Ambient.b;
+        AI_SWAP4(clrTemp.b);
+        COLOR_MULTIPLY_RGB();
+        pcMatOut->AddProperty<aiColor3D>(&clrTemp, 1, AI_MATKEY_COLOR_AMBIENT);
+
+        // read emissive color
+        clrTemp.r = pcMatIn->Emissive.r;
+        AI_SWAP4(clrTemp.r);
+        clrTemp.g = pcMatIn->Emissive.g;
+        AI_SWAP4(clrTemp.g);
+        clrTemp.b = pcMatIn->Emissive.b;
+        AI_SWAP4(clrTemp.b);
+        pcMatOut->AddProperty<aiColor3D>(&clrTemp, 1, AI_MATKEY_COLOR_EMISSIVE);
+
+#undef COLOR_MULITPLY_RGB
+
+        // FIX: Take the opacity from the ambient color.
+        // The doc say something else, but it is fact that MED exports the
+        // opacity like this .... oh well.
+        clrTemp.r = pcMatIn->Ambient.a;
+        AI_SWAP4(clrTemp.r);
+        if (is_not_qnan(clrTexture.r)) {
+            clrTemp.r *= clrTexture.a;
+        }
+        pcMatOut->AddProperty<ai_real>(&clrTemp.r, 1, AI_MATKEY_OPACITY);
+
+        // read phong power
+        int iShadingMode = (int)aiShadingMode_Gouraud;
+        AI_SWAP4(pcMatIn->Power);
+        if (0.0f != pcMatIn->Power) {
+            iShadingMode = (int)aiShadingMode_Phong;
+            // pcMatIn is packed, we can't form pointers to its members
+            float power = pcMatIn->Power;
+            pcMatOut->AddProperty<float>(&power, 1, AI_MATKEY_SHININESS);
+        }
+        pcMatOut->AddProperty<int>(&iShadingMode, 1, AI_MATKEY_SHADING_MODEL);
+    } else if (is_not_qnan(clrTexture.r)) {
+        pcMatOut->AddProperty<aiColor4D>(&clrTexture, 1, AI_MATKEY_COLOR_DIFFUSE);
+        pcMatOut->AddProperty<aiColor4D>(&clrTexture, 1, AI_MATKEY_COLOR_SPECULAR);
+    }
+    // if the texture could be replaced by a single material color
+    // we don't need the texture anymore
+    if (is_not_qnan(clrTexture.r)) {
+        pcNew.reset();
+    }
+
+    // If an ASCII effect description (HLSL?) is contained in the file,
+    // we can simply ignore it ...
+    if (iType & AI_MDL7_SKINTYPE_MATERIAL_ASCDEF) {
+        VALIDATE_FILE_SIZE(szCurrent);
+        int32_t iMe = *((int32_t *)szCurrent);
+        AI_SWAP4(iMe);
+        szCurrent += sizeof(char) * iMe + sizeof(int32_t);
+        VALIDATE_FILE_SIZE(szCurrent);
+    }
+
+    // If an embedded texture has been loaded setup the corresponding
+    // data structures in the aiScene instance
+    if (pcNew && pScene->mNumTextures <= 999) {
+        // place this as diffuse texture
+        char current[5];
+        ai_snprintf(current, 5, "*%i", this->pScene->mNumTextures);
+
+        aiString szFile;
+        const size_t iLen = strlen((const char *)current);
+        ::memcpy(szFile.data, (const char *)current, iLen + 1);
+        szFile.length = (ai_uint32)iLen;
+
+        pcMatOut->AddProperty(&szFile, AI_MATKEY_TEXTURE_DIFFUSE(0));
+
+        // store the texture
+        if (!pScene->mNumTextures) {
+            pScene->mNumTextures = 1;
+            pScene->mTextures = new aiTexture *[1];
+            pScene->mTextures[0] = pcNew.release();
+        } else {
+            aiTexture **pc = pScene->mTextures;
+            pScene->mTextures = new aiTexture *[pScene->mNumTextures + 1];
+            for (unsigned int i = 0; i < pScene->mNumTextures; ++i) {
+                pScene->mTextures[i] = pc[i];
+            }
+
+            pScene->mTextures[pScene->mNumTextures] = pcNew.release();
+            pScene->mNumTextures++;
+            delete[] pc;
+        }
+    }
+    VALIDATE_FILE_SIZE(szCurrent);
+    *szCurrentOut = szCurrent;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Skip a skin lump
+void MDLImporter::SkipSkinLump_3DGS_MDL7(
+        const unsigned char *szCurrent,
+        const unsigned char **szCurrentOut,
+        unsigned int iType,
+        unsigned int iWidth,
+        unsigned int iHeight) {
+    // get the type of the skin
+    const unsigned int iMasked = (unsigned int)(iType & 0xF);
+
+    if (0x6 == iMasked) {
+        szCurrent += iWidth;
+    }
+    if (0x7 == iMasked) {
+        const size_t iLen = std::strlen((const char *)szCurrent);
+        szCurrent += iLen + 1;
+    } else if (iMasked || !iType) {
+        if (iMasked || !iType || (iType && iWidth && iHeight)) {
+            // ParseTextureColorData(..., aiTexture::pcData == bad_texel) will simply
+            // return the size of the color data in bytes in iSkip
+            unsigned int iSkip = 0;
+
+            aiTexture tex;
+            tex.pcData = bad_texel;
+            tex.mHeight = iHeight;
+            tex.mWidth = iWidth;
+            ParseTextureColorData(szCurrent, iMasked, &iSkip, &tex);
+
+            // FIX: Important, otherwise the destructor will crash
+            tex.pcData = nullptr;
+
+            // skip length of texture data
+            szCurrent += iSkip;
+        }
+    }
+
+    // check whether a material definition is contained in the skin
+    if (iType & AI_MDL7_SKINTYPE_MATERIAL) {
+        BE_NCONST MDL::Material_MDL7 *pcMatIn = (BE_NCONST MDL::Material_MDL7 *)szCurrent;
+        szCurrent = (unsigned char *)(pcMatIn + 1);
+    }
+
+    // if an ASCII effect description (HLSL?) is contained in the file,
+    // we can simply ignore it ...
+    if (iType & AI_MDL7_SKINTYPE_MATERIAL_ASCDEF) {
+        int32_t iMe = *((int32_t *)szCurrent);
+        AI_SWAP4(iMe);
+        szCurrent += sizeof(char) * iMe + sizeof(int32_t);
+    }
+    *szCurrentOut = szCurrent;
+}
+
+// ------------------------------------------------------------------------------------------------
+void MDLImporter::ParseSkinLump_3DGS_MDL7(
+        const unsigned char *szCurrent,
+        const unsigned char **szCurrentOut,
+        std::vector<aiMaterial *> &pcMats) {
+    ai_assert(nullptr != szCurrent);
+    ai_assert(nullptr != szCurrentOut);
+
+    *szCurrentOut = szCurrent;
+    BE_NCONST MDL::Skin_MDL7 *pcSkin = (BE_NCONST MDL::Skin_MDL7 *)szCurrent;
+    AI_SWAP4(pcSkin->width);
+    AI_SWAP4(pcSkin->height);
+    szCurrent += 12;
+
+    // allocate an output material
+    aiMaterial *pcMatOut = new aiMaterial();
+    pcMats.push_back(pcMatOut);
+
+    // skip length of file name
+    szCurrent += AI_MDL7_MAX_TEXNAMESIZE;
+
+    ParseSkinLump_3DGS_MDL7(szCurrent, szCurrentOut, pcMatOut,
+            pcSkin->typ, pcSkin->width, pcSkin->height);
+
+    // place the name of the skin in the material
+    if (pcSkin->texture_name[0]) {
+        // the 0 termination could be there or not - we can't know
+        aiString szFile;
+        ::memcpy(szFile.data, pcSkin->texture_name, sizeof(pcSkin->texture_name));
+        szFile.data[sizeof(pcSkin->texture_name)] = '\0';
+        szFile.length = (ai_uint32)::strlen(szFile.data);
+
+        pcMatOut->AddProperty(&szFile, AI_MATKEY_NAME);
+    }
+}
+
+#endif // !! ASSIMP_BUILD_NO_MDL_IMPORTER