Merge remote-tracking branch 'official/master' into contrib

2015-12-08 15:25:13 +01:00
parent 445ae1fec3 0a6788d56f
commit 6eebf8455a
162 changed files with 18423 additions and 529 deletions
--- a/code/ASEParser.h
+++ b/code/ASEParser.h
@@ -138,7 +138,7 @@ struct Bone
    }

    //! Construction from an existing name
-    Bone( const std::string& name)
+    explicit Bone( const std::string& name)
        :   mName   (name)
    {}

@@ -216,7 +216,7 @@ struct BaseNode
    enum Type {Light, Camera, Mesh, Dummy} mType;

    //! Constructor. Creates a default name for the node
-    BaseNode(Type _mType)
+    explicit BaseNode(Type _mType)
        : mType         (_mType)
        , mProcessed    (false)
    {
--- a/code/Assimp.cpp
+++ b/code/Assimp.cpp
@@ -110,7 +110,7 @@ static boost::mutex gLogStreamMutex;
 class LogToCallbackRedirector : public LogStream
 {
 public:
-    LogToCallbackRedirector(const aiLogStream& s)
+    explicit LogToCallbackRedirector(const aiLogStream& s)
        : stream (s)    {
            ai_assert(NULL != s.callback);
    }
--- a/code/AssimpCExport.cpp
+++ b/code/AssimpCExport.cpp
@@ -59,13 +59,38 @@ ASSIMP_API size_t aiGetExportFormatCount(void)


 // ------------------------------------------------------------------------------------------------
-ASSIMP_API const aiExportFormatDesc* aiGetExportFormatDescription( size_t pIndex)
+ASSIMP_API const aiExportFormatDesc* aiGetExportFormatDescription( size_t index)
 {
-    // Note: this is valid as the index always pertains to a builtin exporter,
+    // Note: this is valid as the index always pertains to a built-in exporter,
    // for which the returned structure is guaranteed to be of static storage duration.
-    return Exporter().GetExportFormatDescription(pIndex);
+    Exporter exporter;
+    const aiExportFormatDesc* orig( exporter.GetExportFormatDescription( index ) );
+    if (NULL == orig) {
+        return NULL;
+    }
+
+    aiExportFormatDesc *desc = new aiExportFormatDesc;
+    desc->description = new char[ strlen( orig->description ) + 1 ];
+    ::strncpy( (char*) desc->description, orig->description, strlen( orig->description ) );
+    desc->fileExtension = new char[ strlen( orig->fileExtension ) + 1 ];
+    ::strncpy( ( char* ) desc->fileExtension, orig->fileExtension, strlen( orig->fileExtension ) );
+    desc->id = new char[ strlen( orig->id ) + 1 ];
+    ::strncpy( ( char* ) desc->id, orig->id, strlen( orig->id ) );
+
+    return desc;
 }

+// ------------------------------------------------------------------------------------------------
+ASSIMP_API void aiReleaseExportFormatDescription( const aiExportFormatDesc *desc ) {
+    if (NULL == desc) {
+        return;
+    }
+
+    delete [] desc->description;
+    delete [] desc->fileExtension;
+    delete [] desc->id;
+    delete desc;
+}

 // ------------------------------------------------------------------------------------------------
 ASSIMP_API void aiCopyScene(const aiScene* pIn, aiScene** pOut)
--- a/code/BVHLoader.h
+++ b/code/BVHLoader.h
@@ -83,7 +83,7 @@ class BVHLoader : public BaseImporter
        std::vector<float> mChannelValues; // motion data values for that node. Of size NumChannels * NumFrames

        Node() { }
-        Node( const aiNode* pNode) : mNode( pNode) { }
+        explicit Node( const aiNode* pNode) : mNode( pNode) { }
    };

 public:
--- a/code/BaseImporter.cpp
+++ b/code/BaseImporter.cpp
@@ -63,7 +63,7 @@ using namespace Assimp;
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
 BaseImporter::BaseImporter()
-: progress()
+: m_progress()
 {
    // nothing to do here
 }
@@ -79,8 +79,8 @@ BaseImporter::~BaseImporter()
 // Imports the given file and returns the imported data.
 aiScene* BaseImporter::ReadFile(const Importer* pImp, const std::string& pFile, IOSystem* pIOHandler)
 {
-    progress = pImp->GetProgressHandler();
-    ai_assert(progress);
+    m_progress = pImp->GetProgressHandler();
+    ai_assert(m_progress);

    // Gather configuration properties for this run
    SetupProperties( pImp );
@@ -98,8 +98,8 @@ aiScene* BaseImporter::ReadFile(const Importer* pImp, const std::string& pFile,

    } catch( const std::exception& err )    {
        // extract error description
-        mErrorText = err.what();
-        DefaultLogger::get()->error(mErrorText);
+        m_ErrorText = err.what();
+        DefaultLogger::get()->error(m_ErrorText);
        return NULL;
    }

@@ -274,7 +274,7 @@ void BaseImporter::GetExtensionList(std::set<std::string>& extensions)

        for (unsigned int i = 0; i < num; ++i) {
            // also check against big endian versions of tokens with size 2,4
-            // that's just for convinience, the chance that we cause conflicts
+            // that's just for convenience, the chance that we cause conflicts
            // is quite low and it can save some lines and prevent nasty bugs
            if (2 == size) {
                uint16_t rev = *magic_u16;
--- a/code/BaseImporter.h
+++ b/code/BaseImporter.h
@@ -70,7 +70,7 @@ class IOStream;
 template <typename T>
 struct ScopeGuard
 {
-    ScopeGuard(T* obj) : obj(obj), mdismiss() {}
+    explicit ScopeGuard(T* obj) : obj(obj), mdismiss() {}
    ~ScopeGuard () throw() {
        if (!mdismiss) {
            delete obj;
@@ -181,7 +181,7 @@ public:
     * string if there was no error.
     */
    const std::string& GetErrorText() const {
-        return mErrorText;
+        return m_ErrorText;
    }

    // -------------------------------------------------------------------
@@ -359,13 +359,34 @@ public: // static utilities
        IOStream* stream,
        std::vector<char>& data);

+    // -------------------------------------------------------------------
+    /** Utility function to move a std::vector into a aiScene array
+    *  @param vec The vector to be moved
+    *  @param out The output pointer to the allocated array.
+    *  @param numOut The output count of elements copied. */
+    template<typename T>
+    AI_FORCE_INLINE
+    static void CopyVector(
+        std::vector<T>& vec,
+        T*& out,
+        unsigned int& outLength)
+    {
+        outLength = vec.size();
+        if (outLength) {
+            out = new T[outLength];
+            std::swap_ranges(vec.begin(), vec.end(), out);
+        }
+    }
+
+    
+
 protected:

    /** Error description in case there was one. */
-    std::string mErrorText;
+    std::string m_ErrorText;

    /** Currently set progress handler */
-    ProgressHandler* progress;
+    ProgressHandler* m_progress;
 };


--- a/code/BaseProcess.h
+++ b/code/BaseProcess.h
@@ -74,7 +74,7 @@ public:
    template <typename T>
    struct THeapData : public Base
    {
-        THeapData(T* in)
+        explicit THeapData(T* in)
            : data (in)
        {}

@@ -89,7 +89,7 @@ public:
    template <typename T>
    struct TStaticData : public Base
    {
-        TStaticData(T in)
+        explicit TStaticData(T in)
            : data (in)
        {}

--- a/code/Bitmap.cpp
+++ b/code/Bitmap.cpp
@@ -84,7 +84,12 @@ namespace Assimp {

    template<typename T>
    inline std::size_t Copy(uint8_t* data, T& field) {
+#ifdef AI_BUILD_BIG_ENDIAN
+        T field_swapped=AI_BE(field);
+        std::memcpy(data, &field_swapped, sizeof(field)); return sizeof(field);
+#else
        std::memcpy(data, &AI_BE(field), sizeof(field)); return sizeof(field);
+#endif
    }

    void Bitmap::WriteHeader(Header& header, IOStream* file) {
--- a/code/CInterfaceIOWrapper.h
+++ b/code/CInterfaceIOWrapper.h
@@ -57,7 +57,7 @@ class CIOStreamWrapper : public IOStream
    friend class CIOSystemWrapper;
 public:

-    CIOStreamWrapper(aiFile* pFile)
+    explicit CIOStreamWrapper(aiFile* pFile)
        : mFile(pFile)
    {}

@@ -110,7 +110,7 @@ private:
 class CIOSystemWrapper : public IOSystem
 {
 public:
-    CIOSystemWrapper(aiFileIO* pFile)
+    explicit CIOSystemWrapper(aiFileIO* pFile)
        : mFileSystem(pFile)
    {}

--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -562,6 +562,19 @@ ADD_ASSIMP_IMPORTER(X
  XFileExporter.cpp
 )

+ADD_ASSIMP_IMPORTER(GLTF
+  glTFAsset.h
+  glTFAsset.inl
+  glTFAssetWriter.h
+  glTFAssetWriter.inl
+
+  glTFImporter.cpp
+  glTFImporter.h
+  
+  glTFExporter.h
+  glTFExporter.cpp
+)
+
 SET( Step_SRCS
  StepExporter.h
  StepExporter.cpp
@@ -632,15 +645,20 @@ SOURCE_GROUP( unzip FILES ${unzip_SRCS})
 SET ( openddl_parser_SRCS
  ../contrib/openddlparser/code/OpenDDLParser.cpp
  ../contrib/openddlparser/code/DDLNode.cpp
+  ../contrib/openddlparser/code/OpenDDLCommon.cpp
+  ../contrib/openddlparser/code/OpenDDLExport.cpp
  ../contrib/openddlparser/code/Value.cpp
  ../contrib/openddlparser/include/openddlparser/OpenDDLParser.h
  ../contrib/openddlparser/include/openddlparser/OpenDDLParserUtils.h
  ../contrib/openddlparser/include/openddlparser/OpenDDLCommon.h
+  ../contrib/openddlparser/include/openddlparser/OpenDDLExport.h
  ../contrib/openddlparser/include/openddlparser/DDLNode.h
  ../contrib/openddlparser/include/openddlparser/Value.h
 )
 SOURCE_GROUP( openddl_parser FILES ${openddl_parser_SRCS})

+INCLUDE_DIRECTORIES( "../contrib/rapidjson/include" )
+
 # VC2010 fixes
 if(MSVC10)
  option( VC10_STDINT_FIX "Fix for VC10 Compiler regarding pstdint.h redefinition errors" OFF )
@@ -766,7 +784,7 @@ INSTALL( TARGETS assimp
 INSTALL( FILES ${PUBLIC_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp COMPONENT assimp-dev)
 INSTALL( FILES ${COMPILER_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp/Compiler COMPONENT assimp-dev)
 if (ASSIMP_ANDROID_JNIIOSYSTEM)
-  INSTALL(FILES ${HEADER_PATH}/../${ASSIMP_ANDROID_JNIIOSYSTEM_PATH}/AndroidJNIIOSystem.h
+  INSTALL(FILES ${HEADER_PATH}/${ASSIMP_ANDROID_JNIIOSYSTEM_PATH}/AndroidJNIIOSystem.h
    DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}
    COMPONENT assimp-dev)
 endif(ASSIMP_ANDROID_JNIIOSYSTEM)
--- a/code/ColladaParser.cpp
+++ b/code/ColladaParser.cpp
@@ -64,28 +64,47 @@ using namespace Assimp::Collada;
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
 ColladaParser::ColladaParser( IOSystem* pIOHandler, const std::string& pFile)
-    : mFileName( pFile)
+    : mFileName( pFile )
+    , mReader( NULL )
+    , mDataLibrary()
+    , mAccessorLibrary()
+    , mMeshLibrary()
+    , mNodeLibrary()
+    , mImageLibrary()
+    , mEffectLibrary()
+    , mMaterialLibrary()
+    , mLightLibrary()
+    , mCameraLibrary()
+    , mControllerLibrary()
+    , mRootNode( NULL )
+    , mAnims()
+    , mUnitSize( 1.0f )
+    , mUpDirection( UP_Y )
+    , mFormat(FV_1_5_n )    // We assume the newest file format by default
 {
-    mRootNode = NULL;
-    mUnitSize = 1.0f;
-    mUpDirection = UP_Y;
+    // validate io-handler instance
+    if ( NULL == pIOHandler ) {
+        throw DeadlyImportError("IOSystem is NULL." );
+    }

-    // We assume the newest file format by default
-    mFormat = FV_1_5_n;
-
-  // open the file
-  boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile));
-  if( file.get() == NULL)
-    throw DeadlyImportError( "Failed to open file " + pFile + ".");
+    // open the file
+    boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile ) );
+    if ( file.get() == NULL ) {
+        throw DeadlyImportError( "Failed to open file " + pFile + "." );
+    }

    // generate a XML reader for it
-  boost::scoped_ptr<CIrrXML_IOStreamReader> mIOWrapper( new CIrrXML_IOStreamReader( file.get()));
+    boost::scoped_ptr<CIrrXML_IOStreamReader> mIOWrapper( new CIrrXML_IOStreamReader( file.get()));
    mReader = irr::io::createIrrXMLReader( mIOWrapper.get());
-    if( !mReader)
-        ThrowException( "Collada: Unable to open file.");
+    if (!mReader) {
+        ThrowException("Collada: Unable to open file.");
+    }

    // start reading
    ReadContents();
+
+    // release file after import
+    //pIOHandler->Close( file.get() );
 }

 // ------------------------------------------------------------------------------------------------
@@ -1514,7 +1533,7 @@ void ColladaParser::ReadEffectParam( Collada::EffectParam& pParam)
                // don't care for remaining stuff
                SkipElement( "surface");
            }
-            else if( IsElement( "sampler2D"))
+            else if( IsElement( "sampler2D") && (FV_1_4_n == mFormat || FV_1_3_n == mFormat))
            {
                // surface ID is given inside <source> tags
                TestOpening( "source");
@@ -1525,6 +1544,19 @@ void ColladaParser::ReadEffectParam( Collada::EffectParam& pParam)

                // don't care for remaining stuff
                SkipElement( "sampler2D");
+            }
+            else if( IsElement( "sampler2D"))
+            {
+                // surface ID is given inside <instance_image> tags
+                TestOpening( "instance_image");
+                int attrURL = GetAttribute("url");
+                const char* url = mReader->getAttributeValue( attrURL);
+                if( url[0] != '#')
+                    ThrowException( "Unsupported URL format in instance_image");
+                url++;
+                pParam.mType = Param_Sampler;
+                pParam.mReference = url;
+                SkipElement( "sampler2D");
            } else
            {
                // ignore unknown element
--- a/code/ComputeUVMappingProcess.h
+++ b/code/ComputeUVMappingProcess.h
@@ -125,7 +125,7 @@ private:
    // temporary structure to describe a mapping
    struct MappingInfo
    {
-        MappingInfo(aiTextureMapping _type)
+        explicit MappingInfo(aiTextureMapping _type)
            : type  (_type)
            , axis  (0.f,1.f,0.f)
            , uv    (0u)
--- a/code/DefaultIOSystem.cpp
+++ b/code/DefaultIOSystem.cpp
@@ -135,11 +135,11 @@ inline void MakeAbsolutePath (const char* in, char* _out)
 {
    ai_assert(in && _out);
    char* ret;
-#ifdef _WIN32
-    ret = ::_fullpath(_out, in,PATHLIMIT);
+#if defined( _MSC_VER ) || defined( __MINGW32__ )
+    ret = ::_fullpath( _out, in, PATHLIMIT );
 #else
-        // use realpath
-        ret = realpath(in, _out);
+    // use realpath
+    ret = realpath(in, _out);
 #endif
    if(!ret) {
        // preserve the input path, maybe someone else is able to fix
@@ -167,8 +167,8 @@ bool DefaultIOSystem::ComparePaths (const char* one, const char* second) const
    return !ASSIMP_stricmp(temp1,temp2);
 }

-
-std::string DefaultIOSystem::fileName(std::string path)
+// ------------------------------------------------------------------------------------------------
+std::string DefaultIOSystem::fileName( const std::string &path )
 {
    std::string ret = path;
    std::size_t last = ret.find_last_of("\\/");
@@ -176,8 +176,8 @@ std::string DefaultIOSystem::fileName(std::string path)
    return ret;
 }

-
-std::string DefaultIOSystem::completeBaseName(std::string path)
+// ------------------------------------------------------------------------------------------------
+std::string DefaultIOSystem::completeBaseName( const std::string &path )
 {
    std::string ret = fileName(path);
    std::size_t pos = ret.find_last_of('.');
@@ -185,8 +185,8 @@ std::string DefaultIOSystem::completeBaseName(std::string path)
    return ret;
 }

-
-std::string DefaultIOSystem::absolutePath(std::string path)
+// ------------------------------------------------------------------------------------------------
+std::string DefaultIOSystem::absolutePath( const std::string &path )
 {
    std::string ret = path;
    std::size_t last = ret.find_last_of("\\/");
@@ -194,4 +194,6 @@ std::string DefaultIOSystem::absolutePath(std::string path)
    return ret;
 }

+// ------------------------------------------------------------------------------------------------
+
 #undef PATHLIMIT
--- a/code/DefaultIOSystem.h
+++ b/code/DefaultIOSystem.h
@@ -80,17 +80,17 @@ public:
    /** @brief get the file name of a full filepath
     * example: /tmp/archive.tar.gz -> archive.tar.gz
     */
-    static std::string fileName(std::string path);
+    static std::string fileName( const std::string &path );

    /** @brief get the complete base name of a full filepath
     * example: /tmp/archive.tar.gz -> archive.tar
     */
-    static std::string completeBaseName(std::string path);
+    static std::string completeBaseName( const std::string &path);

    /** @brief get the path of a full filepath
     * example: /tmp/archive.tar.gz -> /tmp/
     */
-    static std::string absolutePath(std::string path);
+    static std::string absolutePath( const std::string &path);
 };

 } //!ns Assimp
--- a/code/Exporter.cpp
+++ b/code/Exporter.cpp
@@ -87,6 +87,8 @@ void ExportSceneSTLBinary(const char*,IOSystem*, const aiScene*, const ExportPro
 void ExportScenePly(const char*,IOSystem*, const aiScene*, const ExportProperties*);
 void ExportScenePlyBinary(const char*, IOSystem*, const aiScene*, const ExportProperties*);
 void ExportScene3DS(const char*, IOSystem*, const aiScene*, const ExportProperties*);
+void ExportSceneGLTF(const char*, IOSystem*, const aiScene*, const ExportProperties*);
+void ExportSceneGLB(const char*, IOSystem*, const aiScene*, const ExportProperties*);
 void ExportSceneAssbin(const char*, IOSystem*, const aiScene*, const ExportProperties*);
 void ExportSceneAssxml(const char*, IOSystem*, const aiScene*, const ExportProperties*);

@@ -135,6 +137,13 @@ Exporter::ExportFormatEntry gExporters[] =
        aiProcess_Triangulate | aiProcess_SortByPType | aiProcess_JoinIdenticalVertices),
 #endif

+#ifndef ASSIMP_BUILD_NO_GLTF_EXPORTER
+    Exporter::ExportFormatEntry( "gltf", "GL Transmission Format", "gltf", &ExportSceneGLTF,
+        aiProcess_JoinIdenticalVertices /*| aiProcess_SortByPType*/),
+    Exporter::ExportFormatEntry( "glb", "GL Transmission Format (binary)", "glb", &ExportSceneGLB,
+        aiProcess_JoinIdenticalVertices /*| aiProcess_SortByPType*/),
+#endif
+
 #ifndef ASSIMP_BUILD_NO_ASSBIN_EXPORTER
    Exporter::ExportFormatEntry( "assbin", "Assimp Binary", "assbin" , &ExportSceneAssbin, 0),
 #endif
--- a/code/FBXConverter.cpp
+++ b/code/FBXConverter.cpp
@@ -54,6 +54,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "FBXUtil.h"
 #include "FBXProperties.h"
 #include "FBXImporter.h"
+#include "StringComparison.h"
 #include "../include/assimp/scene.h"
 #include <boost/foreach.hpp>
 #include <boost/scoped_array.hpp>
@@ -148,6 +149,7 @@ public:
        std::for_each(animations.begin(),animations.end(),Util::delete_fun<aiAnimation>());
        std::for_each(lights.begin(),lights.end(),Util::delete_fun<aiLight>());
        std::for_each(cameras.begin(),cameras.end(),Util::delete_fun<aiCamera>());
+        std::for_each(textures.begin(),textures.end(),Util::delete_fun<aiTexture>());
    }


@@ -1449,6 +1451,36 @@ private:
        return static_cast<unsigned int>(materials.size() - 1);
    }

+    // ------------------------------------------------------------------------------------------------
+    // Video -> aiTexture
+    unsigned int ConvertVideo(const Video& video)
+    {
+        // generate empty output texture
+        aiTexture* out_tex = new aiTexture();
+        textures.push_back(out_tex);
+
+        // assuming the texture is compressed
+        out_tex->mWidth = static_cast<unsigned int>(video.ContentLength()); // total data size
+        out_tex->mHeight = 0; // fixed to 0
+
+        // steal the data from the Video to avoid an additional copy
+        out_tex->pcData = reinterpret_cast<aiTexel*>( const_cast<Video&>(video).RelinquishContent() );
+
+        // try to extract a hint from the file extension
+        const std::string& filename = video.FileName().empty() ? video.RelativeFilename() : video.FileName();
+        std::string ext = BaseImporter::GetExtension(filename);
+
+        if(ext == "jpeg") {
+            ext = "jpg";
+        }
+
+        if(ext.size() <= 3) {
+            memcpy(out_tex->achFormatHint, ext.c_str(), ext.size());
+        }
+
+        return static_cast<unsigned int>(textures.size() - 1);
+    }
+

    // ------------------------------------------------------------------------------------------------
    void TrySetTextureProperties(aiMaterial* out_mat, const TextureMap& textures,
@@ -1466,6 +1498,24 @@ private:
            aiString path;
            path.Set(tex->RelativeFilename());

+            const Video* media = tex->Media();
+            if(media != 0 && media->ContentLength() > 0) {
+                unsigned int index;
+
+                VideoMap::const_iterator it = textures_converted.find(media);
+                if(it != textures_converted.end()) {
+                    index = (*it).second;
+                }
+                else {
+                    index = ConvertVideo(*media);
+                    textures_converted[media] = index;
+                }
+
+                // setup texture reference string (copied from ColladaLoader::FindFilenameForEffectTexture)
+                path.data[0] = '*';
+                path.length = 1 + ASSIMP_itoa10(path.data + 1, MAXLEN - 1, index);
+            }
+
            out_mat->AddProperty(&path,_AI_MATKEY_TEXTURE_BASE,target,0);

            aiUVTransform uvTrafo;
@@ -2496,8 +2546,9 @@ private:
        // need to convert from TRS order to SRT?
        if(reverse_order) {

-            aiVector3D def_scale, def_translate;
-            aiQuaternion def_rot;
+            aiVector3D def_scale = PropertyGet(props,"Lcl Scaling",aiVector3D(1.f,1.f,1.f));
+            aiVector3D def_translate = PropertyGet(props,"Lcl Translation",aiVector3D(0.f,0.f,0.f));
+            aiVector3D def_rot = PropertyGet(props,"Lcl Rotation",aiVector3D(0.f,0.f,0.f));

            KeyFrameListList scaling;
            KeyFrameListList translation;
@@ -2506,24 +2557,14 @@ private:
            if(chain[TransformationComp_Scaling] != iter_end) {
                scaling = GetKeyframeList((*chain[TransformationComp_Scaling]).second, start, stop);
            }
-            else {
-                def_scale = PropertyGet(props,"Lcl Scaling",aiVector3D(1.f,1.f,1.f));
-            }

            if(chain[TransformationComp_Translation] != iter_end) {
                translation = GetKeyframeList((*chain[TransformationComp_Translation]).second, start, stop);
            }
-            else {
-                def_translate = PropertyGet(props,"Lcl Translation",aiVector3D(0.f,0.f,0.f));
-            }

            if(chain[TransformationComp_Rotation] != iter_end) {
                rotation = GetKeyframeList((*chain[TransformationComp_Rotation]).second, start, stop);
            }
-            else {
-                def_rot = EulerToQuaternion(PropertyGet(props,"Lcl Rotation",aiVector3D(0.f,0.f,0.f)),
-                    target.RotationOrder());
-            }

            KeyFrameListList joined;
            joined.insert(joined.end(), scaling.begin(), scaling.end());
@@ -2740,7 +2781,7 @@ private:

    // ------------------------------------------------------------------------------------------------
    void InterpolateKeys(aiVectorKey* valOut,const KeyTimeList& keys, const KeyFrameListList& inputs,
-        const bool geom,
+        const aiVector3D& def_value,
        double& max_time,
        double& min_time)

@@ -2754,10 +2795,7 @@ private:
        next_pos.resize(inputs.size(),0);

        BOOST_FOREACH(KeyTimeList::value_type time, keys) {
-            float result[3] = {0.0f, 0.0f, 0.0f};
-            if(geom) {
-                result[0] = result[1] = result[2] = 1.0f;
-            }
+            float result[3] = {def_value.x, def_value.y, def_value.z};

            for (size_t i = 0; i < count; ++i) {
                const KeyFrameList& kfl = inputs[i];
@@ -2782,12 +2820,7 @@ private:
                const double factor = timeB == timeA ? 0. : static_cast<double>((time - timeA) / (timeB - timeA));
                const float interpValue = static_cast<float>(valueA + (valueB - valueA) * factor);

-                if(geom) {
-                    result[kfl.get<2>()] *= interpValue;
-                }
-                else {
-                    result[kfl.get<2>()] += interpValue;
-                }
+                result[kfl.get<2>()] = interpValue;
            }

            // magic value to convert fbx times to seconds
@@ -2807,7 +2840,7 @@ private:

    // ------------------------------------------------------------------------------------------------
    void InterpolateKeys(aiQuatKey* valOut,const KeyTimeList& keys, const KeyFrameListList& inputs,
-        const bool geom,
+        const aiVector3D& def_value,
        double& maxTime,
        double& minTime,
        Model::RotOrder order)
@@ -2816,7 +2849,7 @@ private:
        ai_assert(valOut);

        boost::scoped_array<aiVectorKey> temp(new aiVectorKey[keys.size()]);
-        InterpolateKeys(temp.get(),keys,inputs,geom,maxTime, minTime);
+        InterpolateKeys(temp.get(), keys, inputs, def_value, maxTime, minTime);

        aiMatrix4x4 m;

@@ -2858,20 +2891,20 @@ private:
        Model::RotOrder order,
        const aiVector3D& def_scale,
        const aiVector3D& def_translate,
-        const aiQuaternion& def_rotation)
+        const aiVector3D& def_rotation)
    {
        if (rotation.size()) {
-            InterpolateKeys(out_quat, times, rotation, false, maxTime, minTime, order);
+            InterpolateKeys(out_quat, times, rotation, def_rotation, maxTime, minTime, order);
        }
        else {
            for (size_t i = 0; i < times.size(); ++i) {
                out_quat[i].mTime = CONVERT_FBX_TIME(times[i]) * anim_fps;
-                out_quat[i].mValue = def_rotation;
+                out_quat[i].mValue = EulerToQuaternion(def_rotation, order);
            }
        }

        if (scaling.size()) {
-            InterpolateKeys(out_scale, times, scaling, true, maxTime, minTime);
+            InterpolateKeys(out_scale, times, scaling, def_scale, maxTime, minTime);
        }
        else {
            for (size_t i = 0; i < times.size(); ++i) {
@@ -2881,7 +2914,7 @@ private:
        }

        if (translation.size()) {
-            InterpolateKeys(out_translation, times, translation, false, maxTime, minTime);
+            InterpolateKeys(out_translation, times, translation, def_translate, maxTime, minTime);
        }
        else {
            for (size_t i = 0; i < times.size(); ++i) {
@@ -2935,7 +2968,7 @@ private:
        na->mNumScalingKeys = static_cast<unsigned int>(keys.size());
        na->mScalingKeys = new aiVectorKey[keys.size()];
        if (keys.size() > 0)
-            InterpolateKeys(na->mScalingKeys, keys, inputs, true, maxTime, minTime);
+            InterpolateKeys(na->mScalingKeys, keys, inputs, aiVector3D(1.0f, 1.0f, 1.0f), maxTime, minTime);
    }


@@ -2955,7 +2988,7 @@ private:
        na->mNumPositionKeys = static_cast<unsigned int>(keys.size());
        na->mPositionKeys = new aiVectorKey[keys.size()];
        if (keys.size() > 0)
-            InterpolateKeys(na->mPositionKeys, keys, inputs, false, maxTime, minTime);
+            InterpolateKeys(na->mPositionKeys, keys, inputs, aiVector3D(0.0f, 0.0f, 0.0f), maxTime, minTime);
    }


@@ -2976,7 +3009,7 @@ private:
        na->mNumRotationKeys = static_cast<unsigned int>(keys.size());
        na->mRotationKeys = new aiQuatKey[keys.size()];
        if (keys.size() > 0)
-            InterpolateKeys(na->mRotationKeys, keys, inputs, false, maxTime, minTime, order);
+            InterpolateKeys(na->mRotationKeys, keys, inputs, aiVector3D(0.0f, 0.0f, 0.0f), maxTime, minTime, order);
    }


@@ -3024,6 +3057,13 @@ private:

            std::swap_ranges(cameras.begin(),cameras.end(),out->mCameras);
        }
+
+        if(textures.size()) {
+            out->mTextures = new aiTexture*[textures.size()]();
+            out->mNumTextures = static_cast<unsigned int>(textures.size());
+
+            std::swap_ranges(textures.begin(),textures.end(),out->mTextures);
+        }
    }


@@ -3037,10 +3077,14 @@ private:
    std::vector<aiAnimation*> animations;
    std::vector<aiLight*> lights;
    std::vector<aiCamera*> cameras;
+    std::vector<aiTexture*> textures;

    typedef std::map<const Material*, unsigned int> MaterialMap;
    MaterialMap materials_converted;

+    typedef std::map<const Video*, unsigned int> VideoMap;
+    VideoMap textures_converted;
+
    typedef std::map<const Geometry*, std::vector<unsigned int> > MeshMap;
    MeshMap meshes_converted;

--- a/code/FBXDocument.cpp
+++ b/code/FBXDocument.cpp
@@ -180,6 +180,9 @@ const Object* LazyObject::Get(bool dieOnError)
        else if (!strncmp(obtype,"LayeredTexture",length)) {
            object.reset(new LayeredTexture(id,element,doc,name));
        }
+        else if (!strncmp(obtype,"Video",length)) {
+            object.reset(new Video(id,element,doc,name));
+        }
        else if (!strncmp(obtype,"AnimationStack",length)) {
            object.reset(new AnimationStack(id,element,name,doc));
        }
@@ -483,6 +486,11 @@ void Document::ReadConnections()
    for(ElementMap::const_iterator it = conns.first; it != conns.second; ++it) {
        const Element& el = *(*it).second;
        const std::string& type = ParseTokenAsString(GetRequiredToken(el,0));
+
+        // PP = property-property connection, ignored for now
+        // (tokens: "PP", ID1, "Property1", ID2, "Property2")
+        if(type == "PP") continue;
+
        const uint64_t src = ParseTokenAsID(GetRequiredToken(el,1));
        const uint64_t dest = ParseTokenAsID(GetRequiredToken(el,2));

--- a/code/FBXDocument.h
+++ b/code/FBXDocument.h
@@ -73,6 +73,8 @@ namespace FBX {
    class Material;
    class Geometry;

+    class Video;
+
    class AnimationCurve;
    class AnimationCurveNode;
    class AnimationLayer;
@@ -571,6 +573,10 @@ public:
        return crop;
    }

+    const Video* Media() const {
+        return media;
+    }
+
 private:

    aiVector2D uvTrans;
@@ -583,6 +589,8 @@ private:
    boost::shared_ptr<const PropertyTable> props;

    unsigned int crop[4];
+
+    const Video* media;
 };

 /** DOM class for layered FBX textures */
@@ -654,6 +662,59 @@ typedef std::fbx_unordered_map<std::string, const Texture*> TextureMap;
 typedef std::fbx_unordered_map<std::string, const LayeredTexture*> LayeredTextureMap;


+/** DOM class for generic FBX videos */
+class Video : public Object
+{
+public:
+
+    Video(uint64_t id, const Element& element, const Document& doc, const std::string& name);
+    ~Video();
+
+public:
+
+    const std::string& Type() const {
+        return type;
+    }
+
+    const std::string& FileName() const {
+        return fileName;
+    }
+
+    const std::string& RelativeFilename() const {
+        return relativeFileName;
+    }
+
+    const PropertyTable& Props() const {
+        ai_assert(props.get());
+        return *props.get();
+    }
+
+    const uint8_t* Content() const {
+        ai_assert(content);
+        return content;
+    }
+
+    const uint32_t ContentLength() const {
+        return contentLength;
+    }
+
+    uint8_t* RelinquishContent() {
+        uint8_t* ptr = content;
+        content = 0;
+        return ptr;
+    }
+
+private:
+
+    std::string type;
+    std::string relativeFileName;
+    std::string fileName;
+    boost::shared_ptr<const PropertyTable> props;
+
+    uint32_t contentLength;
+    uint8_t* content;
+};
+
 /** DOM class for generic FBX materials */
 class Material : public Object
 {
--- a/code/FBXImportSettings.h
+++ b/code/FBXImportSettings.h
@@ -55,6 +55,7 @@ struct ImportSettings
        , readAllLayers(true)
        , readAllMaterials(false)
        , readMaterials(true)
+        , readTextures(true)
        , readCameras(true)
        , readLights(true)
        , readAnimations(true)
@@ -92,6 +93,9 @@ struct ImportSettings
     *  material. The default value is true.*/
    bool readMaterials;

+    /** import embedded textures? Default value is true.*/
+    bool readTextures;
+
    /** import cameras? Default value is true.*/
    bool readCameras;

--- a/code/FBXImporter.cpp
+++ b/code/FBXImporter.cpp
@@ -126,6 +126,7 @@ void FBXImporter::SetupProperties(const Importer* pImp)
    settings.readAllLayers = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_GEOMETRY_LAYERS, true);
    settings.readAllMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_MATERIALS, false);
    settings.readMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_MATERIALS, true);
+    settings.readTextures = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_TEXTURES, true);
    settings.readCameras = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_CAMERAS, true);
    settings.readLights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_LIGHTS, true);
    settings.readAnimations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ANIMATIONS, true);
--- a/code/FBXMaterial.cpp
+++ b/code/FBXMaterial.cpp
@@ -50,6 +50,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "FBXImportSettings.h"
 #include "FBXDocumentUtil.h"
 #include "FBXProperties.h"
+#include "ByteSwapper.h"
 #include <boost/foreach.hpp>

 namespace Assimp {
@@ -147,6 +148,7 @@ Material::~Material()
 Texture::Texture(uint64_t id, const Element& element, const Document& doc, const std::string& name)
 : Object(id,element,name)
 , uvScaling(1.0f,1.0f)
+, media(0)
 {
    const Scope& sc = GetRequiredScope(element);

@@ -199,6 +201,23 @@ Texture::Texture(uint64_t id, const Element& element, const Document& doc, const
    }

    props = GetPropertyTable(doc,"Texture.FbxFileTexture",element,sc);
+
+    // resolve video links
+    if(doc.Settings().readTextures) {
+        const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID());
+        BOOST_FOREACH(const Connection* con, conns) {
+            const Object* const ob = con->SourceObject();
+            if(!ob) {
+                DOMWarning("failed to read source object for texture link, ignoring",&element);
+                continue;
+            }
+
+            const Video* const video = dynamic_cast<const Video*>(ob);
+            if(video) {
+                media = video;
+            }
+        }
+    }
 }


@@ -253,6 +272,68 @@ void LayeredTexture::fillTexture(const Document& doc)
    }
 }

+
+// ------------------------------------------------------------------------------------------------
+Video::Video(uint64_t id, const Element& element, const Document& doc, const std::string& name)
+: Object(id,element,name)
+, contentLength(0)
+, content(0)
+{
+    const Scope& sc = GetRequiredScope(element);
+
+    const Element* const Type = sc["Type"];
+    const Element* const FileName = sc["FileName"];
+    const Element* const RelativeFilename = sc["RelativeFilename"];
+    const Element* const Content = sc["Content"];
+
+    if(Type) {
+        type = ParseTokenAsString(GetRequiredToken(*Type,0));
+    }
+
+    if(FileName) {
+        fileName = ParseTokenAsString(GetRequiredToken(*FileName,0));
+    }
+
+    if(RelativeFilename) {
+        relativeFileName = ParseTokenAsString(GetRequiredToken(*RelativeFilename,0));
+    }
+
+    if(Content) {
+        const Token& token = GetRequiredToken(*Content, 0);
+        const char* data = token.begin();
+        if(!token.IsBinary()) {
+            DOMWarning("video content is not binary data, ignoring", &element);
+        }
+        else if(static_cast<size_t>(token.end() - data) < 5) {
+            DOMError("binary data array is too short, need five (5) bytes for type signature and element count", &element);
+        }
+        else if(*data != 'R') {
+            DOMWarning("video content is not raw binary data, ignoring", &element);
+        }
+        else {
+            // read number of elements
+            uint32_t len = 0;
+            ::memcpy(&len, data + 1, sizeof(len));
+            AI_SWAP4(len);
+
+            contentLength = len;
+
+            content = new uint8_t[len];
+            ::memcpy(content, data + 5, len);
+        }
+    }
+
+    props = GetPropertyTable(doc,"Video.FbxVideo",element,sc);
+}
+
+
+Video::~Video()
+{
+    if(content) {
+        delete[] content;
+    }
+}
+
 } //!FBX
 } //!Assimp

--- a/code/FBXProperties.h
+++ b/code/FBXProperties.h
@@ -87,7 +87,7 @@ class TypedProperty : public Property
 {
 public:

-    TypedProperty(const T& value)
+    explicit TypedProperty(const T& value)
        : value(value)
    {
    }
--- a/code/IRRLoader.h
+++ b/code/IRRLoader.h
@@ -113,7 +113,7 @@ private:

        } type;

-        Animator(AT t = UNKNOWN)
+        explicit Animator(AT t = UNKNOWN)
            : type              (t)
            , speed             (0.001f)
            , direction         (0.f,1.f,0.f)
@@ -163,7 +163,7 @@ private:
            ANIMMESH
        } type;

-        Node(ET t)
+        explicit Node(ET t)
            :   type                (t)
            ,   scaling             (1.f,1.f,1.f) // assume uniform scaling by default
            ,   parent()
--- a/code/Importer.cpp
+++ b/code/Importer.cpp
@@ -491,7 +491,7 @@ const aiScene* Importer::ReadFileFromMemory( const void* pBuffer,
        pHint = "";
    }

-    if (!pBuffer || !pLength || strlen(pHint) > 100) {
+    if (!pBuffer || !pLength || strlen(pHint) > MaxLenHint ) {
        pimpl->mErrorString = "Invalid parameters passed to ReadFileFromMemory()";
        return NULL;
    }
@@ -503,7 +503,8 @@ const aiScene* Importer::ReadFileFromMemory( const void* pBuffer,
    SetIOHandler(new MemoryIOSystem((const uint8_t*)pBuffer,pLength));

    // read the file and recover the previous IOSystem
-    char fbuff[128];
+    static const size_t BufferSize(Importer::MaxLenHint + 28);
+    char fbuff[ BufferSize ];
    sprintf(fbuff,"%s.%s",AI_MEMORYIO_MAGIC_FILENAME,pHint);

    ReadFile(fbuff,pFlags);
--- a/code/Importer.h
+++ b/code/Importer.h
@@ -167,7 +167,7 @@ public:
    // -------------------------------------------------------------------
    /** Construct a batch loader from a given IO system to be used
     *  to acess external files */
-    BatchLoader(IOSystem* pIO);
+    explicit BatchLoader(IOSystem* pIO);
    ~BatchLoader();


--- a/code/ImporterRegistry.cpp
+++ b/code/ImporterRegistry.cpp
@@ -170,7 +170,9 @@ corresponding preprocessor flag to selectively disable formats.
 #ifndef ASSIMP_BUILD_NO_ASSBIN_IMPORTER
 #   include "AssbinLoader.h"
 #endif
-
+#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#   include "glTFImporter.h"
+#endif
 #ifndef ASSIMP_BUILD_NO_C4D_IMPORTER
 #   include "C4DImporter.h"
 #endif
@@ -305,8 +307,10 @@ void GetImporterInstanceList(std::vector< BaseImporter* >& out)
 #if ( !defined ASSIMP_BUILD_NO_ASSBIN_IMPORTER )
    out.push_back( new AssbinImporter() );
 #endif
-
-#ifndef ASSIMP_BUILD_NO_C4D_IMPORTER
+#if ( !defined ASSIMP_BUILD_NO_GLTF_IMPORTER )
+    out.push_back( new glTFImporter() );
+#endif
+#if ( !defined ASSIMP_BUILD_NO_C4D_IMPORTER )
    out.push_back( new C4DImporter() );
 #endif
 }
--- a/code/LWOFileData.h
+++ b/code/LWOFileData.h
@@ -269,7 +269,7 @@ struct Face : public aiFace
    {}

    //! Construction from given type
-    Face(uint32_t _type)
+    explicit Face(uint32_t _type)
        : surfaceIndex  (0)
        , smoothGroup   (0)
        , type          (_type)
@@ -305,7 +305,7 @@ struct Face : public aiFace
 */
 struct VMapEntry
 {
-    VMapEntry(unsigned int _dims)
+    explicit VMapEntry(unsigned int _dims)
        :  dims(_dims)
    {}

--- a/code/MD5Loader.cpp
+++ b/code/MD5Loader.cpp
@@ -285,9 +285,6 @@ void MD5Importer::AttachChilds_Mesh(int iParentID,aiNode* piParent, BoneList& bo
                aiQuaternion quat;
                MD5::ConvertQuaternion ( bones[i].mRotationQuat, quat );

-                // FIX to get to Assimp's quaternion conventions
-                quat.w *= -1.f;
-
                bones[i].mTransform = aiMatrix4x4 ( quat.GetMatrix());
                bones[i].mTransform.a4 = bones[i].mPositionXYZ.x;
                bones[i].mTransform.b4 = bones[i].mPositionXYZ.y;
@@ -656,9 +653,6 @@ void MD5Importer::LoadMD5AnimFile ()

                    MD5::ConvertQuaternion(vTemp, qKey->mValue);
                    qKey->mTime = vKey->mTime = dTime;
-
-                    // we need this to get to Assimp quaternion conventions
-                    qKey->mValue.w *= -1.f;
                }
            }

--- a/code/MD5Parser.h
+++ b/code/MD5Parser.h
@@ -262,6 +262,9 @@ inline void ConvertQuaternion (const aiVector3D& in, aiQuaternion& out) {
    if (t < 0.0f)
        out.w = 0.0f;
    else out.w = std::sqrt (t);
+
+    // Assimp convention.
+    out.w *= -1.f;
 }

 // ---------------------------------------------------------------------------
@@ -277,7 +280,7 @@ public:
     *
     *  @param mSections List of file sections (output of MD5Parser)
     */
-    MD5MeshParser(SectionList& mSections);
+    explicit MD5MeshParser(SectionList& mSections);

    //! List of all meshes
    MeshList mMeshes;
@@ -302,7 +305,7 @@ public:
     *
     *  @param mSections List of file sections (output of MD5Parser)
     */
-    MD5AnimParser(SectionList& mSections);
+    explicit MD5AnimParser(SectionList& mSections);


    //! Output frame rate
@@ -334,7 +337,7 @@ public:
     *
     *  @param mSections List of file sections (output of MD5Parser)
     */
-    MD5CameraParser(SectionList& mSections);
+    explicit MD5CameraParser(SectionList& mSections);


    //! Output frame rate
--- a/code/OFFLoader.cpp
+++ b/code/OFFLoader.cpp
@@ -138,9 +138,15 @@ void OFFImporter::InternReadFile( const std::string& pFile,
        throw DeadlyImportError("OFF: There are no valid faces");
    }

-    pScene->mMeshes = new aiMesh*[ pScene->mNumMeshes = 1 ];
-    aiMesh* mesh = pScene->mMeshes[0] = new aiMesh();
-    aiFace* faces = mesh->mFaces = new aiFace [mesh->mNumFaces = numFaces];
+    pScene->mNumMeshes = 1;
+    pScene->mMeshes = new aiMesh*[ pScene->mNumMeshes ];
+
+    aiMesh* mesh = new aiMesh();
+    pScene->mMeshes[0] = mesh;
+
+    mesh->mNumFaces = numFaces;
+    aiFace* faces = new aiFace [mesh->mNumFaces];
+    mesh->mFaces = faces;

    std::vector<aiVector3D> tempPositions(numVertices);

@@ -171,7 +177,8 @@ void OFFImporter::InternReadFile( const std::string& pFile,
            break;
        }
        sz = line;SkipSpaces(&sz);
-        if(!(faces->mNumIndices = strtoul10(sz,&sz)) || faces->mNumIndices > 9)
+        faces->mNumIndices = strtoul10(sz,&sz);
+        if(!(faces->mNumIndices) || faces->mNumIndices > 9)
        {
            DefaultLogger::get()->error("OFF: Faces with zero indices aren't allowed");
            --mesh->mNumFaces;
@@ -185,43 +192,54 @@ void OFFImporter::InternReadFile( const std::string& pFile,
        throw DeadlyImportError("OFF: There are no valid faces");

    // allocate storage for the output vertices
-    aiVector3D* verts = mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+    std::vector<aiVector3D> verts;
+    verts.reserve(mesh->mNumVertices);

    // second: now parse all face indices
-    buffer = old;faces = mesh->mFaces;
+    buffer = old;
+    faces = mesh->mFaces;
    for (unsigned int i = 0, p = 0; i< mesh->mNumFaces;)
    {
        if(!GetNextLine(buffer,line))break;

        unsigned int idx;
        sz = line;SkipSpaces(&sz);
-        if(!(idx = strtoul10(sz,&sz)) || idx > 9)
+        idx = strtoul10(sz,&sz);
+        if(!(idx) || idx > 9)
            continue;

        faces->mIndices = new unsigned int [faces->mNumIndices];
        for (unsigned int m = 0; m < faces->mNumIndices;++m)
        {
            SkipSpaces(&sz);
-            if ((idx = strtoul10(sz,&sz)) >= numVertices)
+            idx = strtoul10(sz,&sz);
+            if ((idx) >= numVertices)
            {
                DefaultLogger::get()->error("OFF: Vertex index is out of range");
                idx = numVertices-1;
            }
            faces->mIndices[m] = p++;
-            *verts++ = tempPositions[idx];
+            verts.push_back(tempPositions[idx]);
        }
        ++i;
        ++faces;
    }

+    if (mesh->mNumVertices != verts.size()) {
+        throw DeadlyImportError("OFF: Vertex count mismatch");
+    }
+    mesh->mVertices = new aiVector3D[verts.size()];
+    memcpy(mesh->mVertices, &verts[0], verts.size() * sizeof(aiVector3D));
    // generate the output node graph
    pScene->mRootNode = new aiNode();
    pScene->mRootNode->mName.Set("<OFFRoot>");
-    pScene->mRootNode->mMeshes = new unsigned int [pScene->mRootNode->mNumMeshes = 1];
+    pScene->mRootNode->mNumMeshes = 1;
+    pScene->mRootNode->mMeshes = new unsigned int [pScene->mRootNode->mNumMeshes];
    pScene->mRootNode->mMeshes[0] = 0;

    // generate a default material
-    pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials = 1];
+    pScene->mNumMaterials = 1;
+    pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials];
    aiMaterial* pcMat = new aiMaterial();

    aiColor4D clr(0.6f,0.6f,0.6f,1.0f);
--- a/code/ObjFileData.h
+++ b/code/ObjFileData.h
@@ -156,6 +156,7 @@ struct Material
    aiString textureEmissive;
    aiString textureBump;
    aiString textureNormal;
+    aiString textureReflection[6];
    aiString textureSpecularity;
    aiString textureOpacity;
    aiString textureDisp;
@@ -167,6 +168,13 @@ struct Material
        TextureEmissiveType,
        TextureBumpType,
        TextureNormalType,
+        TextureReflectionSphereType,
+        TextureReflectionCubeTopType,
+        TextureReflectionCubeBottomType,
+        TextureReflectionCubeFrontType,
+        TextureReflectionCubeBackType,
+        TextureReflectionCubeLeftType,
+        TextureReflectionCubeRightType,
        TextureSpecularityType,
        TextureOpacityType,
        TextureDispType,
@@ -234,7 +242,7 @@ struct Mesh {
    bool m_hasNormals;

    /// Constructor
-    Mesh( const std::string &name ) 
+    explicit Mesh( const std::string &name ) 
    : m_name( name )
    , m_pMaterial(NULL)
    , m_uiNumIndices(0)
--- a/code/ObjFileImporter.cpp
+++ b/code/ObjFileImporter.cpp
@@ -138,7 +138,7 @@ void ObjFileImporter::InternReadFile( const std::string& pFile, aiScene* pScene,
    if ( pos != std::string::npos ) {
        modelName = pFile.substr(pos+1, pFile.size() - pos - 1);
        folderName = pFile.substr( 0, pos );
-        if ( folderName.empty() ) {
+        if ( !folderName.empty() ) {
            pIOHandler->PushDirectory( folderName );
        }
    } else {
@@ -636,6 +636,22 @@ void ObjFileImporter::createMaterials(const ObjFile::Model* pModel, aiScene* pSc
            }
        }

+        if( 0 != pCurrentMaterial->textureReflection[0].length )
+        {
+            ObjFile::Material::TextureType type = 0 != pCurrentMaterial->textureReflection[1].length ?
+                ObjFile::Material::TextureReflectionCubeTopType :
+                ObjFile::Material::TextureReflectionSphereType;
+
+            unsigned count = type == ObjFile::Material::TextureReflectionSphereType ? 1 : 6;
+            for( unsigned i = 0; i < count; i++ )
+                mat->AddProperty(&pCurrentMaterial->textureReflection[i], AI_MATKEY_TEXTURE_REFLECTION(i));
+
+            if(pCurrentMaterial->clamp[type])
+                //TODO addTextureMappingModeProperty should accept an index to handle clamp option for each
+                //texture of a cubemap
+                addTextureMappingModeProperty(mat, aiTextureType_REFLECTION);
+        }
+
        if ( 0 != pCurrentMaterial->textureDisp.length )
        {
            mat->AddProperty( &pCurrentMaterial->textureDisp, AI_MATKEY_TEXTURE_DISPLACEMENT(0) );
--- a/code/ObjFileMtlImporter.cpp
+++ b/code/ObjFileMtlImporter.cpp
@@ -64,6 +64,7 @@ static const std::string BumpTexture1        = "map_bump";
 static const std::string BumpTexture2        = "map_Bump";
 static const std::string BumpTexture3        = "bump";
 static const std::string NormalTexture       = "map_Kn";
+static const std::string ReflectionTexture   = "refl";
 static const std::string DisplacementTexture = "disp";
 static const std::string SpecularityTexture  = "map_ns";

@@ -200,6 +201,7 @@ void ObjFileMtlImporter::load()

        case 'm':   // Texture
        case 'b':   // quick'n'dirty - for 'bump' sections
+        case 'r':   // quick'n'dirty - for 'refl' sections
            {
                getTexture();
                m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
@@ -332,6 +334,9 @@ void ObjFileMtlImporter::getTexture() {
        // Normal map
        out = & m_pModel->m_pCurrentMaterial->textureNormal;
        clampIndex = ObjFile::Material::TextureNormalType;
+    } else if(!ASSIMP_strincmp( pPtr, ReflectionTexture.c_str(), ReflectionTexture.size() ) ) {
+        // Reflection texture(s)
+        //Do nothing here
    } else if (!ASSIMP_strincmp( pPtr, DisplacementTexture.c_str(), DisplacementTexture.size() ) ) {
        // Displacement texture
        out = &m_pModel->m_pCurrentMaterial->textureDisp;
@@ -346,7 +351,7 @@ void ObjFileMtlImporter::getTexture() {
    }

    bool clamp = false;
-    getTextureOption(clamp);
+    getTextureOption(clamp, clampIndex, out);
    m_pModel->m_pCurrentMaterial->clamp[clampIndex] = clamp;

    std::string texture;
@@ -369,7 +374,7 @@ void ObjFileMtlImporter::getTexture() {
 * Because aiMaterial supports clamp option, so we also want to return it
 * /////////////////////////////////////////////////////////////////////////////
 */
-void ObjFileMtlImporter::getTextureOption(bool &clamp)
+void ObjFileMtlImporter::getTextureOption(bool &clamp, int &clampIndex, aiString *&out)
 {
    m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd);

@@ -392,13 +397,55 @@ void ObjFileMtlImporter::getTextureOption(bool &clamp)

            skipToken = 2;
        }
-        else if (  !ASSIMP_strincmp(pPtr, BlendUOption.c_str(), BlendUOption.size())
+        else if( !ASSIMP_strincmp( pPtr, TypeOption.c_str(), TypeOption.size() ) )
+        {
+            DataArrayIt it = getNextToken<DataArrayIt>( m_DataIt, m_DataItEnd );
+            char value[ 12 ];
+            CopyNextWord( it, m_DataItEnd, value, sizeof( value ) / sizeof( *value ) );
+            if( !ASSIMP_strincmp( value, "cube_top", 8 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeTopType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[0];
+            }
+            else if( !ASSIMP_strincmp( value, "cube_bottom", 11 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeBottomType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[1];
+            }
+            else if( !ASSIMP_strincmp( value, "cube_front", 10 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeFrontType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[2];
+            }
+            else if( !ASSIMP_strincmp( value, "cube_back", 9 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeBackType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[3];
+            }
+            else if( !ASSIMP_strincmp( value, "cube_left", 9 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeLeftType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[4];
+            }
+            else if( !ASSIMP_strincmp( value, "cube_right", 10 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionCubeRightType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[5];
+            }
+            else if( !ASSIMP_strincmp( value, "sphere", 6 ) )
+            {
+                clampIndex = ObjFile::Material::TextureReflectionSphereType;
+                out = &m_pModel->m_pCurrentMaterial->textureReflection[0];
+            }
+
+            skipToken = 2;
+        }
+        else if (!ASSIMP_strincmp(pPtr, BlendUOption.c_str(), BlendUOption.size())
                || !ASSIMP_strincmp(pPtr, BlendVOption.c_str(), BlendVOption.size())
                || !ASSIMP_strincmp(pPtr, BoostOption.c_str(), BoostOption.size())
                || !ASSIMP_strincmp(pPtr, ResolutionOption.c_str(), ResolutionOption.size())
                || !ASSIMP_strincmp(pPtr, BumpOption.c_str(), BumpOption.size())
-                || !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), ChannelOption.size())
-                || !ASSIMP_strincmp(pPtr, TypeOption.c_str(), TypeOption.size()) )
+                || !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), ChannelOption.size()))
        {
            skipToken = 2;
        }
--- a/code/ObjFileMtlImporter.h
+++ b/code/ObjFileMtlImporter.h
@@ -43,6 +43,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <string>

 struct aiColor3D;
+struct aiString;

 namespace Assimp {

@@ -89,7 +90,7 @@ private:
    void createMaterial();
    /// Get texture name from loaded data.
    void getTexture();
-    void getTextureOption(bool &clamp);
+    void getTextureOption(bool &clamp, int &clampIndex, aiString *&out);

 private:
    //! Absolute pathname
--- a/code/ObjFileParser.cpp
+++ b/code/ObjFileParser.cpp
@@ -414,7 +414,7 @@ void ObjFileParser::getFace(aiPrimitiveType type)

    if ( pIndices->empty() ) {
        DefaultLogger::get()->error("Obj: Ignoring empty face");
-        // skip line and clean up 
+        // skip line and clean up
        m_DataIt = skipLine<DataArrayIt>( m_DataIt, m_DataItEnd, m_uiLine );
        delete pNormalID;
        delete pTexID;
@@ -539,7 +539,10 @@ void ObjFileParser::getMaterialLib()
    const std::string strMatName(pStart, &(*m_DataIt));
    std::string absName;
    if ( m_pIO->StackSize() > 0 ) {
-        const std::string &path = m_pIO->CurrentDirectory();
+        std::string path = m_pIO->CurrentDirectory();
+        if ( '/' != *path.rbegin() ) {
+          path += '/';
+        }
        absName = path + strMatName;
    } else {
        absName = strMatName;
--- a/code/OgreStructs.h
+++ b/code/OgreStructs.h
@@ -381,8 +381,8 @@ typedef std::vector<VertexAnimationTrack> VertexAnimationTrackList;
 class Animation
 {
 public:
-    Animation(Skeleton *parent);
-    Animation(Mesh *parent);
+    explicit Animation(Skeleton *parent);
+    explicit Animation(Mesh *parent);

    /// Returns the associated vertex data for a track in this animation.
    /** @note Only valid to call when parent Mesh is set. */
--- a/code/OgreXmlSerializer.h
+++ b/code/OgreXmlSerializer.h
@@ -69,7 +69,7 @@ public:
    static bool ImportSkeleton(Assimp::IOSystem *pIOHandler, Mesh *mesh);

 private:
-    OgreXmlSerializer(XmlReader *reader) :
+    explicit OgreXmlSerializer(XmlReader *reader) :
        m_reader(reader)
    {
    }
--- a/code/OpenGEXImporter.cpp
+++ b/code/OpenGEXImporter.cpp
@@ -801,6 +801,19 @@ void OpenGEXImporter::handleColorNode( ODDLParser::DDLNode *node, aiScene *pScen
    }
 }

+//------------------------------------------------------------------------------------------------
+bool isSpecialRootDir(aiString &texName) {
+    if (texName.length < 2) {
+        return false;
+    }
+
+    if (texName.data[0] = '/' || texName.data[1] == '/') {
+        return true;
+    }
+
+    return false;
+}
+
 //------------------------------------------------------------------------------------------------
 void OpenGEXImporter::handleTextureNode( ODDLParser::DDLNode *node, aiScene *pScene ) {
    if( NULL == node ) {
--- a/code/PlyParser.cpp
+++ b/code/PlyParser.cpp
@@ -857,7 +857,7 @@ bool PLY::PropertyInstance::ParseValueBinary(

    case EDT_UShort:
        {
-        int16_t i = *((uint16_t*)pCur);
+        uint16_t i = *((uint16_t*)pCur);

        // Swap endianess
        if (p_bBE)ByteSwap::Swap(&i);
--- a/code/Q3BSPFileImporter.cpp
+++ b/code/Q3BSPFileImporter.cpp
@@ -325,7 +325,7 @@ void Q3BSPFileImporter::CreateNodes( const Q3BSP::Q3BSPModel *pModel, aiScene* p
        matIdx++;
    }

-    pScene->mNumMeshes = MeshArray.size();
+    pScene->mNumMeshes = static_cast<unsigned int>( MeshArray.size() );
    if ( pScene->mNumMeshes > 0 )
    {
        pScene->mMeshes = new aiMesh*[ pScene->mNumMeshes ];
--- a/code/Q3BSPZipArchive.h
+++ b/code/Q3BSPZipArchive.h
@@ -90,7 +90,7 @@ class ZipFile : public IOStream {

    public:

-        ZipFile(size_t size);
+        explicit ZipFile(size_t size);

        ~ZipFile();

--- a/code/Q3DLoader.h
+++ b/code/Q3DLoader.h
@@ -103,7 +103,7 @@ private:

    struct Face
    {
-        Face(unsigned int s)
+        explicit Face(unsigned int s)
            :   indices   (s)
            ,   uvindices (s)
            ,   mat       (0)
--- a/code/RawLoader.h
+++ b/code/RawLoader.h
@@ -88,7 +88,7 @@ private:

    struct MeshInformation
    {
-        MeshInformation(const std::string& _name)
+        explicit MeshInformation(const std::string& _name)
            : name(_name)
        {
            vertices.reserve(100);
@@ -103,7 +103,7 @@ private:

    struct GroupInformation
    {
-        GroupInformation(const std::string& _name)
+        explicit GroupInformation(const std::string& _name)
            : name(_name)
        {
            meshes.reserve(10);
--- a/code/SGSpatialSort.h
+++ b/code/SGSpatialSort.h
@@ -66,7 +66,7 @@ public:
    /** Construction from a given face array, handling smoothing groups
     *  properly
     */
-    SGSpatialSort(const std::vector<aiVector3D>& vPositions);
+    explicit SGSpatialSort(const std::vector<aiVector3D>& vPositions);

    // -------------------------------------------------------------------
    /** Add a vertex to the spatial sort
--- a/code/STLLoader.cpp
+++ b/code/STLLoader.cpp
@@ -74,7 +74,7 @@ static const aiImporterDesc desc = {
 // 1) 80 byte header
 // 2) 4 byte face count
 // 3) 50 bytes per face
-bool IsBinarySTL(const char* buffer, unsigned int fileSize) {
+static bool IsBinarySTL(const char* buffer, unsigned int fileSize) {
    if( fileSize < 84 ) {
        return false;
    }
@@ -88,7 +88,7 @@ bool IsBinarySTL(const char* buffer, unsigned int fileSize) {
 // An ascii STL buffer will begin with "solid NAME", where NAME is optional.
 // Note: The "solid NAME" check is necessary, but not sufficient, to determine
 // if the buffer is ASCII; a binary header could also begin with "solid NAME".
-bool IsAsciiSTL(const char* buffer, unsigned int fileSize) {
+static bool IsAsciiSTL(const char* buffer, unsigned int fileSize) {
    if (IsBinarySTL(buffer, fileSize))
        return false;

--- a/code/SceneCombiner.h
+++ b/code/SceneCombiner.h
@@ -166,7 +166,7 @@ struct SceneHelper
        id[0] = 0;
    }

-    SceneHelper (aiScene* _scene)
+    explicit SceneHelper (aiScene* _scene)
        : scene     (_scene)
        , idlen     (0)
    {
--- a/code/StdOStreamLogStream.h
+++ b/code/StdOStreamLogStream.h
@@ -16,7 +16,7 @@ public:
    /** @brief  Construction from an existing std::ostream
     *  @param _ostream Output stream to be used
    */
-    StdOStreamLogStream(std::ostream& _ostream);
+    explicit StdOStreamLogStream(std::ostream& _ostream);

    /** @brief  Destructor  */
    ~StdOStreamLogStream();
--- a/code/TinyFormatter.h
+++ b/code/TinyFormatter.h
@@ -97,7 +97,7 @@ public:
    // being bound to const ref& function parameters. Copying streams is not permitted, though.
    // This workaround avoids this by manually specifying a copy ctor.
 #if !defined(__GNUC__) || !defined(__APPLE__) || __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
-    basic_formatter(const basic_formatter& other) {
+    explicit basic_formatter(const basic_formatter& other) {
        underlying << (string)other;
    }
 #endif
--- a/code/UnrealLoader.h
+++ b/code/UnrealLoader.h
@@ -87,7 +87,7 @@ struct TempMat  {
        ,   numFaces    (0)
    {}

-    TempMat(const Triangle& in)
+    explicit TempMat(const Triangle& in)
        :   type        ((Unreal::MeshFlags)in.mType)
        ,   tex         (in.mTextureNum)
        ,   numFaces    (0)
--- a/code/Version.cpp
+++ b/code/Version.cpp
@@ -6,7 +6,7 @@
 #include "ScenePrivate.h"

 static const unsigned int MajorVersion = 3;
-static const unsigned int MinorVersion = 1;
+static const unsigned int MinorVersion = 2;

 // --------------------------------------------------------------------------------
 // Legal information string - dont't remove this.
--- a/code/XFileHelper.h
+++ b/code/XFileHelper.h
@@ -129,7 +129,7 @@ struct Mesh

    std::vector<Bone> mBones;

-    Mesh(const std::string &pName = "") { mName = pName; mNumTextures = 0; mNumColorSets = 0; }
+    explicit Mesh(const std::string &pName = "") { mName = pName; mNumTextures = 0; mNumColorSets = 0; }
 };

 /** Helper structure to represent a XFile frame */
@@ -142,7 +142,7 @@ struct Node
    std::vector<Mesh*> mMeshes;

    Node() { mParent = NULL; }
-    Node( Node* pParent) { mParent = pParent; }
+    explicit Node( Node* pParent) { mParent = pParent; }
    ~Node()
    {
        for( unsigned int a = 0; a < mChildren.size(); a++)
--- a/code/XFileParser.h
+++ b/code/XFileParser.h
@@ -68,7 +68,7 @@ public:
    /** Constructor. Creates a data structure out of the XFile given in the memory block.
     * @param pBuffer Null-terminated memory buffer containing the XFile
     */
-    XFileParser( const std::vector<char>& pBuffer);
+    explicit XFileParser( const std::vector<char>& pBuffer);

    /** Destructor. Destroys all imported data along with it */
    ~XFileParser();
--- a/code/glTFAsset.h
+++ b/code/glTFAsset.h
@@ -0,0 +1,945 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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 glTFAsset.h
+ * Declares a glTF class to handle gltf/glb files
+ *
+ * glTF Extensions Support:
+ *   KHR_binary_glTF: full
+ *   KHR_materials_common: full
+ */
+#ifndef glTFAsset_H_INC
+#define glTFAsset_H_INC
+
+#include <map>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <stdexcept>
+
+#define RAPIDJSON_HAS_STDSTRING 1
+#include <rapidjson/rapidjson.h>
+#include <rapidjson/document.h>
+#include <rapidjson/error/en.h>
+
+#ifdef ASSIMP_API
+#   include "boost/shared_ptr.hpp"
+#   include "DefaultIOSystem.h"
+#   include "ByteSwapper.h"
+#else
+#   include <memory>
+#   define AI_SWAP4(p)
+#   define ai_assert
+#endif
+
+
+#if _MSC_VER > 1500 || (defined __GNUC___)
+#       define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+#   else
+#       define gltf_unordered_map map
+#endif
+
+#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+#   include <unordered_map>
+#   if _MSC_VER > 1600
+#       define gltf_unordered_map unordered_map
+#   else
+#       define gltf_unordered_map tr1::unordered_map
+#   endif
+#endif
+
+namespace glTF
+{
+#ifdef ASSIMP_API
+    using Assimp::IOStream;
+    using Assimp::IOSystem;
+    using boost::shared_ptr;
+#else
+    using std::shared_ptr;
+
+    typedef std::runtime_error DeadlyImportError;
+    typedef std::runtime_error DeadlyExportError;
+
+    enum aiOrigin { aiOrigin_SET = 0, aiOrigin_CUR = 1, aiOrigin_END = 2 };
+    class IOSystem;
+    class IOStream
+    {
+        FILE* f;
+    public:
+        IOStream(FILE* file) : f(file) {}
+        ~IOStream() { fclose(f); f = 0; }
+
+        size_t Read(void* b, size_t sz, size_t n) { return fread(b, sz, n, f); }
+        size_t Write(const void* b, size_t sz, size_t n) { return fwrite(b, sz, n, f); }
+        int    Seek(size_t off, aiOrigin orig) { return fseek(f, off, int(orig)); }
+        size_t Tell() const { return ftell(f); }
+
+        size_t FileSize() {
+            long p = Tell(), len = (Seek(0, aiOrigin_END), Tell());
+            return size_t((Seek(p, aiOrigin_SET), len));
+        }
+    };
+#endif
+
+    using rapidjson::Value;
+    using rapidjson::Document;
+
+    class Asset;
+    class AssetWriter;
+
+    struct BufferView; // here due to cross-reference
+    struct Texture;
+    struct Light;
+
+
+    // Vec/matrix types, as raw float arrays
+    typedef float (vec3)[3];
+    typedef float (vec4)[4];
+    typedef float (mat4)[16];
+
+
+    namespace Util
+    {
+        void EncodeBase64(const uint8_t* in, size_t inLength, std::string& out);
+
+        size_t DecodeBase64(const char* in, size_t inLength, uint8_t*& out);
+
+        inline size_t DecodeBase64(const char* in, uint8_t*& out)
+        {
+            return DecodeBase64(in, strlen(in), out);
+        }
+
+        struct DataURI
+        {
+            const char* mediaType;
+            const char* charset;
+            bool base64;
+            const char* data;
+            size_t dataLength;
+        };
+
+        //! Check if a uri is a data URI
+        inline bool ParseDataURI(const char* uri, size_t uriLen, DataURI& out);
+    }
+
+
+    //! Magic number for GLB files
+    #define AI_GLB_MAGIC_NUMBER "glTF"
+
+    #ifdef ASSIMP_API
+        #include "./../include/assimp/Compiler/pushpack1.h"
+    #endif
+
+    //! For the KHR_binary_glTF extension (binary .glb file)
+    //! 20-byte header (+ the JSON + a "body" data section)
+    struct GLB_Header
+    {
+        uint8_t magic[4];     //!< Magic number: "glTF"
+        uint32_t version;     //!< Version number (always 1 as of the last update)
+        uint32_t length;      //!< Total length of the Binary glTF, including header, scene, and body, in bytes
+        uint32_t sceneLength; //!< Length, in bytes, of the glTF scene
+        uint32_t sceneFormat; //!< Specifies the format of the glTF scene (see the SceneFormat enum)
+    } PACK_STRUCT;
+
+    #ifdef ASSIMP_API
+        #include "./../include/assimp/Compiler/poppack1.h"
+    #endif
+
+
+    //! Values for the GLB_Header::sceneFormat field
+    enum SceneFormat
+    {
+        SceneFormat_JSON = 0
+    };
+
+    //! Values for the mesh primitive modes
+    enum PrimitiveMode
+    {
+        PrimitiveMode_POINTS = 0,
+        PrimitiveMode_LINES = 1,
+        PrimitiveMode_LINE_LOOP = 2,
+        PrimitiveMode_LINE_STRIP = 3,
+        PrimitiveMode_TRIANGLES = 4,
+        PrimitiveMode_TRIANGLE_STRIP = 5,
+        PrimitiveMode_TRIANGLE_FAN = 6
+    };
+
+    //! Values for the Accessor::componentType field
+    enum ComponentType
+    {
+        ComponentType_BYTE = 5120,
+        ComponentType_UNSIGNED_BYTE = 5121,
+        ComponentType_SHORT = 5122,
+        ComponentType_UNSIGNED_SHORT = 5123,
+        ComponentType_FLOAT = 5126
+    };
+
+    inline size_t ComponentTypeSize(ComponentType t)
+    {
+        switch (t) {
+            case ComponentType_SHORT:
+            case ComponentType_UNSIGNED_SHORT:
+                return 2;
+
+            case ComponentType_FLOAT:
+                return 4;
+
+            //case Accessor::ComponentType_BYTE:
+            //case Accessor::ComponentType_UNSIGNED_BYTE:
+            default:
+                return 1;
+        }
+    }
+
+    //! Values for the BufferView::target field
+    enum BufferViewTarget
+    {
+        BufferViewTarget_ARRAY_BUFFER = 34962,
+        BufferViewTarget_ELEMENT_ARRAY_BUFFER = 34963
+    };
+
+    //! Values for the Texture::format and Texture::internalFormat fields
+    enum TextureFormat
+    {
+        TextureFormat_ALPHA = 6406,
+        TextureFormat_RGB = 6407,
+        TextureFormat_RGBA = 6408,
+        TextureFormat_LUMINANCE = 6409,
+        TextureFormat_LUMINANCE_ALPHA = 6410
+    };
+
+    //! Values for the Texture::target field
+    enum TextureTarget
+    {
+        TextureTarget_TEXTURE_2D = 3553
+    };
+
+    //! Values for the Texture::type field
+    enum TextureType
+    {
+        TextureType_UNSIGNED_BYTE = 5121,
+        TextureType_UNSIGNED_SHORT_5_6_5 = 33635,
+        TextureType_UNSIGNED_SHORT_4_4_4_4 = 32819,
+        TextureType_UNSIGNED_SHORT_5_5_5_1 = 32820
+    };
+
+
+    //! Values for the Accessor::type field (helper class)
+    class AttribType
+    {
+    public:
+        enum Value
+            { SCALAR, VEC2, VEC3, VEC4, MAT2, MAT3, MAT4 };
+
+    private:
+        static const size_t NUM_VALUES = static_cast<size_t>(MAT4)+1;
+
+        struct Info
+            { const char* name; unsigned int numComponents; };
+
+        template<int N> struct data
+            { static const Info infos[NUM_VALUES]; };
+
+    public:
+        inline static Value FromString(const char* str)
+        {
+            for (size_t i = 0; i < NUM_VALUES; ++i) {
+                if (strcmp(data<0>::infos[i].name, str) == 0) {
+                    return static_cast<Value>(i);
+                }
+            }
+            return SCALAR;
+        }
+
+        inline static const char* ToString(Value type)
+        {
+            return data<0>::infos[static_cast<size_t>(type)].name;
+        }
+
+        inline static unsigned int GetNumComponents(Value type)
+        {
+            return data<0>::infos[static_cast<size_t>(type)].numComponents;
+        }
+    };
+
+    // must match the order of the AttribTypeTraits::Value enum!
+    template<int N> const AttribType::Info
+    AttribType::data<N>::infos[AttribType::NUM_VALUES] = {
+        { "SCALAR", 1 }, { "VEC2", 2 }, { "VEC3", 3 }, { "VEC4", 4 }, { "MAT2", 4 }, { "MAT3", 9 }, { "MAT4", 16 }
+    };
+
+
+
+    //! A reference to one top-level object, which is valid
+    //! until the Asset instance is destroyed
+    template<class T>
+    class Ref
+    {
+        std::vector<T*>* vector;
+        int index;
+
+    public:
+        Ref() : vector(0), index(0) {}
+        Ref(std::vector<T*>& vec, int idx) : vector(&vec), index(idx) {}
+
+        inline size_t GetIndex() const
+            { return index; }
+
+        operator bool() const
+            { return vector != 0; }
+
+        T* operator->()
+            { return (*vector)[index]; }
+
+        T& operator*()
+            { return *((*vector)[index]); }
+    };
+
+    //! Helper struct to represent values that might not be present
+    template<class T>
+    struct Nullable
+    {
+        T value;
+        bool isPresent;
+
+        Nullable() : isPresent(false) {}
+        Nullable(T& val) : value(val), isPresent(true) {}
+    };
+
+
+    //! Base classe for all glTF top-level objects
+    struct Object
+    {
+        std::string id;   //!< The globally unique ID used to reference this object
+        std::string name; //!< The user-defined name of this object
+
+        //! Objects marked as special are not exported (used to emulate the binary body buffer)
+        virtual bool IsSpecial() const
+            { return false; }
+
+        virtual ~Object() {}
+    };
+
+
+
+    //
+    // Classes for each glTF top-level object type
+    //
+
+    //! A typed view into a BufferView. A BufferView contains raw binary data.
+    //! An accessor provides a typed view into a BufferView or a subset of a BufferView
+    // !similar to how WebGL's vertexAttribPointer() defines an attribute in a buffer.
+    struct Accessor : public Object
+    {
+        Ref<BufferView> bufferView;  //!< The ID of the bufferView. (required)
+        unsigned int byteOffset;     //!< The offset relative to the start of the bufferView in bytes. (required)
+        unsigned int byteStride;     //!< The stride, in bytes, between attributes referenced by this accessor. (default: 0)
+        ComponentType componentType; //!< The datatype of components in the attribute. (required)
+        unsigned int count;          //!< The number of attributes referenced by this accessor. (required)
+        AttribType::Value type;      //!< Specifies if the attribute is a scalar, vector, or matrix. (required)
+        //std::vector<float> max;    //!< Maximum value of each component in this attribute.
+        //std::vector<float> min;    //!< Minimum value of each component in this attribute.
+
+        unsigned int GetNumComponents();
+        unsigned int GetBytesPerComponent();
+        unsigned int GetElementSize();
+
+        inline uint8_t* GetPointer();
+
+        template<class T>
+        void ExtractData(T*& outData);
+
+        void WriteData(size_t count, const void* src_buffer, size_t src_stride);
+
+        //! Helper class to iterate the data
+        class Indexer
+        {
+            friend struct Accessor;
+
+            Accessor& accessor;
+            uint8_t* data;
+            size_t elemSize, stride;
+
+            Indexer(Accessor& acc);
+
+        public:
+
+            //! Accesses the i-th value as defined by the accessor
+            template<class T>
+            T GetValue(int i);
+
+            //! Accesses the i-th value as defined by the accessor
+            inline unsigned int GetUInt(int i)
+            {
+                return GetValue<unsigned int>(i);
+            }
+        };
+
+        inline Indexer GetIndexer()
+        {
+            return Indexer(*this);
+        }
+
+        Accessor() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+
+    struct Animation : public Object
+    {
+        struct Channel
+        {
+
+        };
+        
+        struct Target
+        {
+
+        };
+        
+        struct Sampler
+        {
+
+        };
+    };
+
+    //! A buffer points to binary geometry, animation, or skins.
+    struct Buffer : public Object
+    {
+    public:
+
+        enum Type
+        {
+            Type_arraybuffer,
+            Type_text
+        };
+
+        //std::string uri; //!< The uri of the buffer. Can be a filepath, a data uri, etc. (required)
+        size_t byteLength; //!< The length of the buffer in bytes. (default: 0)
+        //std::string type; //!< XMLHttpRequest responseType (default: "arraybuffer")
+
+        Type type;
+
+    private:
+        shared_ptr<uint8_t> mData; //!< Pointer to the data
+        bool mIsSpecial; //!< Set to true for special cases (e.g. the body buffer)
+
+    public:
+        Buffer();
+
+        void Read(Value& obj, Asset& r);
+
+        void LoadFromStream(IOStream& stream, size_t length = 0, size_t baseOffset = 0);
+        
+        size_t AppendData(uint8_t* data, size_t length);
+        void Grow(size_t amount);
+
+        uint8_t* GetPointer()
+            { return mData.get(); }
+
+        void MarkAsSpecial()
+            { mIsSpecial = true; }
+        
+        bool IsSpecial() const
+            { return mIsSpecial; }
+    };
+
+
+    //! A view into a buffer generally representing a subset of the buffer.
+    struct BufferView : public Object
+    {
+        Ref<Buffer> buffer; //! The ID of the buffer. (required)
+        size_t byteOffset; //! The offset into the buffer in bytes. (required)
+        size_t byteLength; //! The length of the bufferView in bytes. (default: 0)
+
+        BufferViewTarget target; //! The target that the WebGL buffer should be bound to.
+
+        BufferView() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+
+    struct Camera : public Object
+    {
+        enum Type
+        {
+            Perspective,
+            Orthographic
+        };
+
+        Type type;
+
+        union
+        {
+            struct {
+                float aspectRatio; //!<The floating - point aspect ratio of the field of view. (0 = undefined = use the canvas one)
+                float yfov;  //!<The floating - point vertical field of view in radians. (required)
+                float zfar;  //!<The floating - point distance to the far clipping plane. (required)
+                float znear; //!< The floating - point distance to the near clipping plane. (required)
+            } perspective;
+
+            struct {
+                float xmag;  //! The floating-point horizontal magnification of the view. (required)
+                float ymag;  //! The floating-point vertical magnification of the view. (required)
+                float zfar;  //! The floating-point distance to the far clipping plane. (required)
+                float znear; //! The floating-point distance to the near clipping plane. (required)
+            } ortographic;
+        };
+
+        Camera() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+
+    //! Image data used to create a texture.
+    struct Image : public Object
+    {
+        std::string uri; //! The uri of the image, that can be a file path, a data URI, etc.. (required)
+
+        Ref<BufferView> bufferView;
+
+        std::string mimeType;
+
+        int width, height;
+
+    private:
+        uint8_t* mData;
+        size_t mDataLength;
+
+    public:
+
+        Image();
+        void Read(Value& obj, Asset& r);
+
+        inline bool HasData() const
+            { return mDataLength > 0; }
+
+        inline size_t GetDataLength() const
+            { return mDataLength; }
+        
+        inline const uint8_t* GetData() const
+            { return mData; }
+
+        inline uint8_t* StealData();
+
+        inline void SetData(uint8_t* data, size_t length, Asset& r);
+    };
+
+    //! Holds a material property that can be a texture or a color
+    struct TexProperty
+    {
+        Ref<Texture> texture;
+        vec4 color;
+    };
+
+    //! The material appearance of a primitive.
+    struct Material : public Object
+    {
+        //Ref<Sampler> source; //!< The ID of the technique.
+        //std::gltf_unordered_map<std::string, std::string> values; //!< A dictionary object of parameter values.
+
+        //! Techniques defined by KHR_materials_common
+        enum Technique
+        {
+            Technique_undefined = 0,
+            Technique_BLINN,
+            Technique_PHONG,
+            Technique_LAMBERT,
+            Technique_CONSTANT
+        };
+
+        TexProperty ambient;
+        TexProperty diffuse;
+        TexProperty specular;
+        TexProperty emission;
+
+        bool doubleSided;
+        bool transparent;
+        float transparency;
+        float shininess;
+
+        Technique technique;
+
+        Material() { SetDefaults(); }
+        void Read(Value& obj, Asset& r);
+        void SetDefaults();
+    };
+
+    //! A set of primitives to be rendered. A node can contain one or more meshes. A node's transform places the mesh in the scene.
+    struct Mesh : public Object
+    {
+        typedef std::vector< Ref<Accessor> > AccessorList;
+
+        struct Primitive
+        {
+            PrimitiveMode mode;
+
+            struct Attributes {
+                AccessorList position, normal, texcoord, color, joint, jointmatrix, weight;
+            } attributes;
+
+            Ref<Accessor> indices;
+
+            Ref<Material> material;
+        };
+
+        std::vector<Primitive> primitives;
+
+        Mesh() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Node : public Object
+    {
+        std::vector< Ref<Node> > children;
+        std::vector< Ref<Mesh> > meshes;
+
+        Nullable<mat4> matrix;
+        Nullable<vec3> translation;
+        Nullable<vec4> rotation;
+        Nullable<vec3> scale;
+
+        Ref<Camera> camera;
+        Ref<Light>  light;
+
+        Node() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Program : public Object
+    {
+        Program() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+
+    struct Sampler : public Object
+    {
+        Sampler() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Scene : public Object
+    {
+        std::vector< Ref<Node> > nodes;
+
+        Scene() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Shader : public Object
+    {
+        Shader() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Skin : public Object
+    {
+        Skin() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    struct Technique : public Object
+    {
+        struct Parameters
+        {
+
+        };
+
+        struct States
+        {
+
+        };
+
+        struct Functions
+        {
+
+        };
+
+        Technique() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+    //! A texture and its sampler.
+    struct Texture : public Object
+    {
+        //Ref<Sampler> source; //!< The ID of the sampler used by this texture. (required)
+        Ref<Image> source; //!< The ID of the image used by this texture. (required)
+
+        //TextureFormat format; //!< The texture's format. (default: TextureFormat_RGBA)
+        //TextureFormat internalFormat; //!< The texture's internal format. (default: TextureFormat_RGBA)
+
+        //TextureTarget target; //!< The target that the WebGL texture should be bound to. (default: TextureTarget_TEXTURE_2D)
+        //TextureType type; //!< Texel datatype. (default: TextureType_UNSIGNED_BYTE)
+
+        Texture() {}
+        void Read(Value& obj, Asset& r);
+    };
+
+
+    //! A light (from KHR_materials_common extension)
+    struct Light : public Object
+    {
+        enum Type
+        {
+            Type_undefined,
+            Type_ambient,
+            Type_directional,
+            Type_point,
+            Type_spot
+        };
+
+        Type type;
+
+        vec4 color;
+        float distance;
+        float constantAttenuation;
+        float linearAttenuation;
+        float quadraticAttenuation;
+        float falloffAngle;
+        float falloffExponent;
+
+        Light() {}
+        void Read(Value& obj, Asset& r);
+
+        void SetDefaults();
+    };
+
+    //! Base class for LazyDict that acts as an interface
+    class LazyDictBase
+    {
+    public:
+        virtual ~LazyDictBase() {}
+
+        virtual void AttachToDocument(Document& doc) = 0;
+        virtual void DetachFromDocument() = 0;
+
+        virtual void WriteObjects(AssetWriter& writer) = 0;
+    };
+
+    //! (Stub class that is specialized in glTFAssetWriter.h)
+    template<class T>
+    struct LazyDictWriter
+    {
+        static void Write(T& d, AssetWriter& w) {}
+    };
+
+    //! Manages lazy loading of the glTF top-level objects, and keeps a reference to them by ID
+    //! It is the owner the loaded objects, so when it is destroyed it also deletes them
+    template<class T>
+    class LazyDict : public LazyDictBase
+    {
+        friend class Asset;
+        friend class AssetWriter;
+
+        typedef typename std::gltf_unordered_map< std::string, size_t > Dict;
+
+        std::vector<T*>  mObjs;      //! The read objects
+        Dict             mObjsById;  //! The read objects accesible by id
+        const char*      mDictId;    //! ID of the dictionary object
+        const char*      mExtId;     //! ID of the extension defining the dictionary
+        Value*           mDict;      //! JSON dictionary object
+        Asset&           mAsset;     //! The asset instance
+
+        void AttachToDocument(Document& doc);
+        void DetachFromDocument();
+
+        void WriteObjects(AssetWriter& writer)
+            { LazyDictWriter< LazyDict >::Write(*this, writer); }
+
+        Ref<T> Add(T* obj);
+
+    public:
+        LazyDict(Asset& asset, const char* dictId, const char* extId = 0);
+        ~LazyDict();
+
+        Ref<T> Get(const char* id);
+        Ref<T> Get(size_t i);
+
+        Ref<T> Create(const char* id);
+        Ref<T> Create(const std::string& id)
+            { return Create(id.c_str()); }
+
+        inline size_t Size() const
+            { return mObjs.size(); }
+
+        inline T& operator[](size_t i)
+            { return *mObjs[i]; }
+
+    };
+
+
+    struct AssetMetadata
+    {
+        std::string copyright; //!< A copyright message suitable for display to credit the content creator.
+        std::string generator; //!< Tool that generated this glTF model.Useful for debugging.
+        bool premultipliedAlpha; //!< Specifies if the shaders were generated with premultiplied alpha. (default: false)
+
+        struct {
+            std::string api;     //!< Specifies the target rendering API (default: "WebGL")
+            std::string version; //!< Specifies the target rendering API (default: "1.0.3")
+        } profile; //!< Specifies the target rendering API and version, e.g., WebGL 1.0.3. (default: {})
+
+        int version; //!< The glTF format version (should be 1)
+
+        void Read(Document& doc);
+    };
+
+    //
+    // glTF Asset class
+    //
+
+    //! Root object for a glTF asset
+    class Asset
+    {
+        typedef std::gltf_unordered_map<std::string, int> IdMap;
+
+        template<class T>
+        friend class LazyDict;
+
+        friend struct Buffer; // To access OpenFile
+
+        friend class AssetWriter;
+
+    private:
+        IOSystem* mIOSystem;
+
+        std::string mCurrentAssetDir;
+
+        size_t mSceneLength;
+        size_t mBodyOffset, mBodyLength;
+
+        std::vector<LazyDictBase*> mDicts;
+
+        IdMap mUsedIds;
+
+        Ref<Buffer> mBodyBuffer;
+
+        Asset(Asset&);
+        Asset& operator=(const Asset&);
+
+    public:
+
+        //! Keeps info about the enabled extensions
+        struct Extensions
+        {
+            bool KHR_binary_glTF;
+            bool KHR_materials_common;
+
+        } extensionsUsed;
+
+        AssetMetadata asset;
+
+
+        // Dictionaries for each type of object
+
+        LazyDict<Accessor>    accessors;
+        LazyDict<Animation>   animations;
+        LazyDict<Buffer>      buffers;
+        LazyDict<BufferView>  bufferViews;
+        LazyDict<Camera>      cameras;
+        LazyDict<Image>       images;
+        LazyDict<Material>    materials;
+        LazyDict<Mesh>        meshes;
+        LazyDict<Node>        nodes;
+        //LazyDict<Program>   programs;
+        //LazyDict<Sampler>   samplers;
+        LazyDict<Scene>       scenes;
+        //LazyDict<Shader>    shaders;
+        //LazyDict<Skin>      skins;
+        //LazyDict<Technique> techniques;
+        LazyDict<Texture>     textures;
+
+        LazyDict<Light>       lights; // KHR_materials_common ext
+
+        Ref<Scene> scene;
+
+    public:
+        Asset(IOSystem* io = 0)
+            : mIOSystem(io)
+            , accessors     (*this, "accessors")
+            , animations    (*this, "animations")
+            , buffers       (*this, "buffers")
+            , bufferViews   (*this, "bufferViews")
+            , cameras       (*this, "cameras")
+            , images        (*this, "images")
+            , materials     (*this, "materials")
+            , meshes        (*this, "meshes")
+            , nodes         (*this, "nodes")
+            //, programs    (*this, "programs")
+            //, samplers    (*this, "samplers")
+            , scenes        (*this, "scenes")
+            //, shaders     (*this, "shaders")
+            //, skins       (*this, "skins")
+            //, techniques  (*this, "techniques")
+            , textures      (*this, "textures")
+            , lights        (*this, "lights", "KHR_materials_common")
+        {
+            memset(&extensionsUsed, 0, sizeof(extensionsUsed));
+            memset(&asset, 0, sizeof(asset));
+        }
+
+        //! Main function
+        void Load(const std::string& file, bool isBinary = false);
+
+        //! Enables the "KHR_binary_glTF" extension on the asset
+        void SetAsBinary();
+
+        //! Search for an available name, starting from the given strings
+        std::string FindUniqueID(const std::string& str, const char* suffix);
+
+        Ref<Buffer> GetBodyBuffer()
+            { return mBodyBuffer; }
+
+    private:
+        void ReadBinaryHeader(IOStream& stream);
+
+        void ReadExtensionsUsed(Document& doc);
+
+
+        IOStream* OpenFile(std::string path, const char* mode, bool absolute = false);
+    };
+
+}
+
+// Include the implementation of the methods
+#include "glTFAsset.inl"
+
+#endif
--- a/code/glTFAsset.inl
+++ b/code/glTFAsset.inl
--- a/code/glTFAssetWriter.h
+++ b/code/glTFAssetWriter.h
@@ -0,0 +1,89 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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 glTFWriter.h
+ * Declares a class to write gltf/glb files
+ *
+ * glTF Extensions Support:
+ *   KHR_binary_glTF: full
+ *   KHR_materials_common: full
+ */
+#ifndef glTFAssetWriter_H_INC
+#define glTFAssetWriter_H_INC
+
+#include "glTFAsset.h"
+
+namespace glTF
+{
+
+using rapidjson::MemoryPoolAllocator;
+
+class AssetWriter
+{
+    template<class T>
+    friend struct LazyDictWriter;
+
+private:
+
+    void WriteBinaryData(IOStream* outfile, size_t sceneLength);
+
+    void WriteMetadata();
+    void WriteExtensionsUsed();
+
+    template<class T>
+    void WriteObjects(LazyDict<T>& d);
+
+public:
+    Document mDoc;
+    Asset& mAsset;
+
+    MemoryPoolAllocator<>& mAl;
+
+    AssetWriter(Asset& asset);
+
+    void WriteFile(const char* path);
+};
+
+}
+
+// Include the implementation of the methods
+#include "glTFAssetWriter.inl"
+
+#endif
--- a/code/glTFAssetWriter.inl
+++ b/code/glTFAssetWriter.inl
@@ -0,0 +1,497 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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.
+
+----------------------------------------------------------------------
+*/
+
+#include <rapidjson/stringbuffer.h>
+#include <rapidjson/writer.h>
+#include <rapidjson/prettywriter.h>
+
+namespace glTF {
+
+    using rapidjson::StringBuffer;
+    using rapidjson::PrettyWriter;
+    using rapidjson::Writer;
+    using rapidjson::StringRef;
+    using rapidjson::StringRef;
+
+    namespace {
+
+        template<size_t N>
+        inline Value& MakeValue(Value& val, float(&r)[N], MemoryPoolAllocator<>& al) {
+            val.SetArray();
+            val.Reserve(N, al);
+            for (int i = 0; i < N; ++i) {
+                val.PushBack(r[i], al);
+            }
+            return val;
+        };
+
+        template<class T>
+        inline void AddRefsVector(Value& obj, const char* fieldId, std::vector< Ref<T> >& v, MemoryPoolAllocator<>& al) {
+            if (v.empty()) return;
+            Value lst;
+            lst.SetArray();
+            lst.Reserve(v.size(), al);
+            for (size_t i = 0; i < v.size(); ++i) {
+                lst.PushBack(StringRef(v[i]->id), al);
+            }
+            obj.AddMember(StringRef(fieldId), lst, al);
+        };
+
+
+    }
+
+    inline void Write(Value& obj, Accessor& a, AssetWriter& w)
+    {
+        obj.AddMember("bufferView", Value(a.bufferView->id, w.mAl).Move(), w.mAl);
+        obj.AddMember("byteOffset", a.byteOffset, w.mAl);
+        obj.AddMember("byteStride", a.byteStride, w.mAl);
+        obj.AddMember("componentType", int(a.componentType), w.mAl);
+        obj.AddMember("count", a.count, w.mAl);
+        obj.AddMember("type", StringRef(AttribType::ToString(a.type)), w.mAl);
+    }
+
+    inline void Write(Value& obj, Animation& a, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Buffer& b, AssetWriter& w)
+    {
+        std::string dataURI = "data:application/octet-stream;base64,";
+        Util::EncodeBase64(b.GetPointer(), b.byteLength, dataURI);
+
+        const char* type;
+        switch (b.type) {
+            case Buffer::Type_text:
+                type = "text"; break;
+            default:
+                type = "arraybuffer";
+        }
+
+        obj.AddMember("byteLength", b.byteLength, w.mAl);
+        obj.AddMember("type", StringRef(type), w.mAl);
+        obj.AddMember("uri", Value(dataURI, w.mAl).Move(), w.mAl);
+    }
+
+    inline void Write(Value& obj, BufferView& bv, AssetWriter& w)
+    {
+        obj.AddMember("buffer", Value(bv.buffer->id, w.mAl).Move(), w.mAl);
+        obj.AddMember("byteOffset", bv.byteOffset, w.mAl);
+        obj.AddMember("byteLength", bv.byteLength, w.mAl);
+        obj.AddMember("target", int(bv.target), w.mAl);
+    }
+
+    inline void Write(Value& obj, Camera& c, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Image& img, AssetWriter& w)
+    {
+        std::string uri;
+        if (w.mAsset.extensionsUsed.KHR_binary_glTF && img.bufferView) {
+            Value exts, ext;
+            exts.SetObject();
+            ext.SetObject();
+
+            ext.AddMember("bufferView", StringRef(img.bufferView->id), w.mAl);
+
+            if (!img.mimeType.empty())
+                ext.AddMember("mimeType", StringRef(img.mimeType), w.mAl);
+
+            exts.AddMember("KHR_binary_glTF", ext, w.mAl);
+            obj.AddMember("extensions", exts, w.mAl);
+            return;
+        }
+        else if (img.HasData()) {
+            uri = "data:" + (img.mimeType.empty() ? "application/octet-stream" : img.mimeType);
+            uri += ";base64,";
+            Util::EncodeBase64(img.GetData(), img.GetDataLength(), uri);
+        }
+        else {
+            uri = img.uri;
+        }
+
+        obj.AddMember("uri", Value(uri, w.mAl).Move(), w.mAl);
+    }
+
+    namespace {
+        inline void WriteColorOrTex(Value& obj, TexProperty& prop, const char* propName, MemoryPoolAllocator<>& al)
+        {
+            if (prop.texture)
+                obj.AddMember(StringRef(propName), Value(prop.texture->id, al).Move(), al);
+            else {
+                Value col;
+                obj.AddMember(StringRef(propName), MakeValue(col, prop.color, al), al);
+            }
+        }
+    }
+
+    inline void Write(Value& obj, Material& m, AssetWriter& w)
+    {
+        Value v;
+        v.SetObject();
+        {
+            WriteColorOrTex(v, m.ambient, "ambient", w.mAl);
+            WriteColorOrTex(v, m.diffuse, "diffuse", w.mAl);
+            WriteColorOrTex(v, m.specular, "specular", w.mAl);
+            WriteColorOrTex(v, m.emission, "emission", w.mAl);
+
+            v.AddMember("shininess", m.shininess, w.mAl);
+        }
+        obj.AddMember("values", v, w.mAl);
+    }
+
+    namespace {
+        inline void WriteAttrs(AssetWriter& w, Value& attrs, Mesh::AccessorList& lst,
+            const char* semantic, bool forceNumber = false)
+        {
+            if (lst.empty()) return;
+            if (lst.size() == 1 && !forceNumber) {
+                attrs.AddMember(StringRef(semantic), Value(lst[0]->id, w.mAl).Move(), w.mAl);
+            }
+            else {
+                for (size_t i = 0; i < lst.size(); ++i) {
+                    char buffer[32];
+                    sprintf(buffer, "%s_%d", semantic, int(i));
+                    attrs.AddMember(Value(buffer, w.mAl).Move(), Value(lst[i]->id, w.mAl).Move(), w.mAl);
+                }
+            }
+        }
+    }
+
+    inline void Write(Value& obj, Mesh& m, AssetWriter& w)
+    {
+        Value primitives;
+        primitives.SetArray();
+        primitives.Reserve(m.primitives.size(), w.mAl);
+
+        for (size_t i = 0; i < m.primitives.size(); ++i) {
+            Mesh::Primitive& p = m.primitives[i];
+            Value prim;
+            prim.SetObject();
+            {
+                prim.AddMember("mode", Value(int(p.mode)).Move(), w.mAl);
+
+                if (p.material)
+                    prim.AddMember("material", p.material->id, w.mAl);
+
+                if (p.indices)
+                    prim.AddMember("indices", Value(p.indices->id, w.mAl).Move(), w.mAl);
+
+                Value attrs;
+                attrs.SetObject();
+                {
+                    WriteAttrs(w, attrs, p.attributes.position, "POSITION");
+                    WriteAttrs(w, attrs, p.attributes.normal, "NORMAL");
+                    WriteAttrs(w, attrs, p.attributes.texcoord, "TEXCOORD", true);
+                    WriteAttrs(w, attrs, p.attributes.color, "COLOR");
+                    WriteAttrs(w, attrs, p.attributes.joint, "JOINT");
+                    WriteAttrs(w, attrs, p.attributes.jointmatrix, "JOINTMATRIX");
+                    WriteAttrs(w, attrs, p.attributes.weight, "WEIGHT");
+                }
+                prim.AddMember("attributes", attrs, w.mAl);
+            }
+            primitives.PushBack(prim, w.mAl);
+        }
+    
+        obj.AddMember("primitives", primitives, w.mAl);
+    }
+
+    inline void Write(Value& obj, Node& n, AssetWriter& w)
+    {
+
+        if (n.matrix.isPresent) {
+            Value val;
+            obj.AddMember("matrix", MakeValue(val, n.matrix.value, w.mAl).Move(), w.mAl);
+        }
+
+        if (n.translation.isPresent) {
+            Value val;
+            obj.AddMember("translation", MakeValue(val, n.translation.value, w.mAl).Move(), w.mAl);
+        }
+
+        if (n.scale.isPresent) {
+            Value val;
+            obj.AddMember("scale", MakeValue(val, n.scale.value, w.mAl).Move(), w.mAl);
+        }
+        if (n.rotation.isPresent) {
+            Value val;
+            obj.AddMember("rotation", MakeValue(val, n.rotation.value, w.mAl).Move(), w.mAl);
+        }
+
+        AddRefsVector(obj, "children", n.children, w.mAl);
+
+        AddRefsVector(obj, "meshes", n.meshes, w.mAl);
+    }
+
+    inline void Write(Value& obj, Program& b, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Sampler& b, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& scene, Scene& s, AssetWriter& w)
+    {
+        AddRefsVector(scene, "nodes", s.nodes, w.mAl);
+    }
+
+    inline void Write(Value& obj, Shader& b, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Skin& b, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Technique& b, AssetWriter& w)
+    {
+
+    }
+
+    inline void Write(Value& obj, Texture& tex, AssetWriter& w)
+    {
+        if (tex.source) {
+            obj.AddMember("source", Value(tex.source->id, w.mAl).Move(), w.mAl);
+        }
+    }
+
+    inline void Write(Value& obj, Light& b, AssetWriter& w)
+    {
+
+    }
+
+
+    AssetWriter::AssetWriter(Asset& a)
+        : mDoc()
+        , mAsset(a)
+        , mAl(mDoc.GetAllocator())
+    {
+        mDoc.SetObject();
+
+        WriteMetadata();
+        WriteExtensionsUsed();
+
+        // Dump the contents of the dictionaries
+        for (size_t i = 0; i < a.mDicts.size(); ++i) {
+            a.mDicts[i]->WriteObjects(*this);
+        }
+
+        // Add the target scene field
+        if (mAsset.scene) {
+            mDoc.AddMember("scene", StringRef(mAsset.scene->id), mAl);
+        }
+    }
+
+    void AssetWriter::WriteFile(const char* path)
+    {
+        bool isBinary = mAsset.extensionsUsed.KHR_binary_glTF;
+
+        boost::scoped_ptr<IOStream> outfile
+            (mAsset.OpenFile(path, isBinary ? "wb" : "wt", true));
+
+        if (outfile == 0) {
+            throw DeadlyExportError("Could not open output file: " + std::string(path));
+        }
+
+        if (isBinary) {
+            // we will write the header later, skip its size
+            outfile->Seek(sizeof(GLB_Header), aiOrigin_SET);
+        }
+
+        StringBuffer docBuffer;
+
+        bool pretty = true; 
+        if (!isBinary && pretty) {
+            PrettyWriter<StringBuffer> writer(docBuffer);
+            mDoc.Accept(writer);
+        }
+        else {
+            Writer<StringBuffer> writer(docBuffer);
+            mDoc.Accept(writer);
+        }
+
+        if (outfile->Write(docBuffer.GetString(), docBuffer.GetSize(), 1) != 1) {
+            throw DeadlyExportError("Failed to write scene data!"); 
+        }
+
+        if (isBinary) {
+            WriteBinaryData(outfile.get(), docBuffer.GetSize());
+        }
+    }
+
+    void AssetWriter::WriteBinaryData(IOStream* outfile, size_t sceneLength)
+    {
+        //
+        // write the body data
+        //
+
+        size_t bodyLength = 0;
+        if (Ref<Buffer> b = mAsset.GetBodyBuffer()) {
+            bodyLength = b->byteLength;
+
+            if (bodyLength > 0) {
+                size_t bodyOffset = sizeof(GLB_Header) + sceneLength;
+                bodyOffset = (bodyOffset + 3) & ~3; // Round up to next multiple of 4
+
+                outfile->Seek(bodyOffset, aiOrigin_SET);
+
+                if (outfile->Write(b->GetPointer(), b->byteLength, 1) != 1) {
+                    throw DeadlyExportError("Failed to write body data!");
+                }
+            }
+        }
+
+
+        //
+        // write the header
+        //
+
+        GLB_Header header;
+        memcpy(header.magic, AI_GLB_MAGIC_NUMBER, sizeof(header.magic));
+
+        header.version = 1;
+        AI_SWAP4(header.version);
+
+        header.length = sizeof(header) + sceneLength + bodyLength;
+        AI_SWAP4(header.length);
+
+        header.sceneLength = sceneLength;
+        AI_SWAP4(header.sceneLength);
+
+        header.sceneFormat = SceneFormat_JSON;
+        AI_SWAP4(header.sceneFormat);
+
+        outfile->Seek(0, aiOrigin_SET);
+
+        if (outfile->Write(&header, 1, sizeof(header)) != sizeof(header)) {
+            throw DeadlyExportError("Failed to write the header!");
+        }
+    }
+
+    
+    void AssetWriter::WriteMetadata()
+    {
+        Value asset;
+        asset.SetObject();
+        {
+            asset.AddMember("version", mAsset.asset.version, mAl);
+
+            asset.AddMember("generator", Value(mAsset.asset.generator, mAl).Move(), mAl);
+        }
+        mDoc.AddMember("asset", asset, mAl);
+    }
+
+    void AssetWriter::WriteExtensionsUsed()
+    {
+        Value exts;
+        exts.SetArray();
+        {
+            if (false)
+                exts.PushBack(StringRef("KHR_binary_glTF"), mAl);
+
+            if (false)
+                exts.PushBack(StringRef("KHR_materials_common"), mAl);
+        }
+
+        if (!exts.Empty())
+            mDoc.AddMember("extensionsUsed", exts, mAl);
+    }
+
+    template<class T>
+    void AssetWriter::WriteObjects(LazyDict<T>& d)
+    {
+        if (d.mObjs.empty()) return;
+
+        Value* container = &mDoc;
+
+        if (d.mExtId) {
+            Value* exts = FindObject(mDoc, "extensions");
+            if (!exts) {
+                mDoc.AddMember("extensions", Value().SetObject().Move(), mDoc.GetAllocator());
+                exts = FindObject(mDoc, "extensions");
+            }
+
+            if (!(container = FindObject(*exts, d.mExtId))) {
+                exts->AddMember(StringRef(d.mExtId), Value().SetObject().Move(), mDoc.GetAllocator());
+                container = FindObject(*exts, d.mExtId);
+            }
+        }
+
+        Value* dict;
+        if (!(dict = FindObject(*container, d.mDictId))) {
+            container->AddMember(StringRef(d.mDictId), Value().SetObject().Move(), mDoc.GetAllocator());
+            dict = FindObject(*container, d.mDictId);
+        }
+
+        for (size_t i = 0; i < d.mObjs.size(); ++i) {
+            if (d.mObjs[i]->IsSpecial()) continue;
+
+            Value obj;
+            obj.SetObject();
+
+            if (!d.mObjs[i]->name.empty()) {
+                obj.AddMember("name", StringRef(d.mObjs[i]->name.c_str()), mAl);
+            }
+
+            Write(obj, *d.mObjs[i], *this);
+
+            dict->AddMember(StringRef(d.mObjs[i]->id), obj, mAl);
+        }
+    }
+
+    template<class T>
+    struct LazyDictWriter< LazyDict<T> >
+    {
+        static void Write(LazyDict<T>& d, AssetWriter& w)
+        {
+            w.WriteObjects(d);
+        }
+    };
+
+}
+
+
--- a/code/glTFExporter.cpp
+++ b/code/glTFExporter.cpp
@@ -0,0 +1,367 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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.
+
+----------------------------------------------------------------------
+*/
+
+
+
+#ifndef ASSIMP_BUILD_NO_EXPORT
+#ifndef ASSIMP_BUILD_NO_GLTF_EXPORTER
+
+#include "glTFExporter.h"
+#include "Exceptional.h"
+#include "StringComparison.h"
+#include "ByteSwapper.h"
+
+#include <assimp/version.h>
+#include <assimp/IOSystem.hpp>
+#include <assimp/Exporter.hpp>
+#include <assimp/material.h>
+#include <assimp/scene.h>
+
+#include <boost/foreach.hpp>
+#include <boost/scoped_ptr.hpp>
+#include <boost/shared_ptr.hpp>
+
+#include "glTFAssetWriter.h"
+
+using namespace rapidjson;
+
+using namespace Assimp;
+using namespace glTF;
+
+namespace Assimp {
+
+    // ------------------------------------------------------------------------------------------------
+    // Worker function for exporting a scene to GLTF. Prototyped and registered in Exporter.cpp
+    void ExportSceneGLTF(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties)
+    {
+        // invoke the exporter
+        glTFExporter exporter(pFile, pIOSystem, pScene, pProperties, false);
+    }
+
+    // ------------------------------------------------------------------------------------------------
+    // Worker function for exporting a scene to GLB. Prototyped and registered in Exporter.cpp
+    void ExportSceneGLB(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties)
+    {
+        // invoke the exporter
+        glTFExporter exporter(pFile, pIOSystem, pScene, pProperties, true);
+    }
+
+} // end of namespace Assimp
+
+
+
+glTFExporter::glTFExporter(const char* filename, IOSystem* pIOSystem, const aiScene* pScene,
+                           const ExportProperties* pProperties, bool isBinary)
+    : mFilename(filename)
+    , mIOSystem(pIOSystem)
+    , mScene(pScene)
+    , mProperties(pProperties)
+{
+    boost::scoped_ptr<Asset> asset(new glTF::Asset(pIOSystem));
+    mAsset = asset.get();
+
+    if (isBinary) {
+        asset->SetAsBinary();
+    }
+
+    ExportMetadata();
+
+    //for (unsigned int i = 0; i < pScene->mNumAnimations; ++i) {}
+
+    //for (unsigned int i = 0; i < pScene->mNumCameras; ++i) {}
+
+    //for (unsigned int i = 0; i < pScene->mNumLights; ++i) {}
+
+
+    ExportMaterials();
+
+    ExportMeshes();
+
+    //for (unsigned int i = 0; i < pScene->mNumTextures; ++i) {}
+
+
+    if (mScene->mRootNode) {
+        ExportNode(mScene->mRootNode);
+    }
+
+    ExportScene();
+
+
+    glTF::AssetWriter writer(*mAsset);
+    writer.WriteFile(filename);
+}
+
+
+static void CopyValue(const aiMatrix4x4& v, glTF::mat4& o)
+{ 
+    o[ 0] = v.a1; o[ 1] = v.b1; o[ 2] = v.c1; o[ 3] = v.d1;
+    o[ 4] = v.a2; o[ 5] = v.b2; o[ 6] = v.c2; o[ 7] = v.d2;
+    o[ 8] = v.a3; o[ 9] = v.b3; o[10] = v.c3; o[11] = v.d3;
+    o[12] = v.a4; o[13] = v.b4; o[14] = v.c4; o[15] = v.d4;
+}
+
+inline Ref<Accessor> ExportData(Asset& a, std::string& meshName, Ref<Buffer>& buffer,
+    unsigned int count, void* data, AttribType::Value typeIn, AttribType::Value typeOut, ComponentType compType, bool isIndices = false)
+{
+    if (!count || !data) return Ref<Accessor>();
+
+    unsigned int numCompsIn = AttribType::GetNumComponents(typeIn);
+    unsigned int numCompsOut = AttribType::GetNumComponents(typeOut);
+    unsigned int bytesPerComp = ComponentTypeSize(compType);
+
+    size_t offset = buffer->byteLength;
+    size_t length = count * numCompsOut * bytesPerComp;
+    buffer->Grow(length);
+
+    // bufferView
+    Ref<BufferView> bv = a.bufferViews.Create(a.FindUniqueID(meshName, "view"));
+    bv->buffer = buffer;
+    bv->byteOffset = 0;
+    bv->byteLength = length; //! The target that the WebGL buffer should be bound to.
+    bv->target = isIndices ? BufferViewTarget_ELEMENT_ARRAY_BUFFER : BufferViewTarget_ARRAY_BUFFER;
+
+    // accessor
+    Ref<Accessor> acc = a.accessors.Create(a.FindUniqueID(meshName, "accessor"));
+    acc->bufferView = bv;
+    acc->byteOffset = offset;
+    acc->byteStride = 0;
+    acc->componentType = compType;
+    acc->count = count;
+    acc->type = typeOut;
+
+    // copy the data
+    acc->WriteData(count, data, numCompsIn*bytesPerComp);
+
+    return acc;
+}
+
+namespace {
+    void GetMatScalar(const aiMaterial* mat, float& val, const char* propName, int type, int idx) {
+        if (mat->Get(propName, type, idx, val) == AI_SUCCESS) {}
+    }
+}
+
+void glTFExporter::GetMatColorOrTex(const aiMaterial* mat, glTF::TexProperty& prop, const char* propName, int type, int idx, aiTextureType tt)
+{
+    aiString tex;
+    aiColor4D col;
+    if (mat->GetTextureCount(tt) > 0) {
+        if (mat->Get(AI_MATKEY_TEXTURE(tt, 0), tex) == AI_SUCCESS) {
+            std::string path = tex.C_Str();
+
+            if (path.size() > 0) {
+                if (path[0] != '*') {
+                    std::map<std::string, size_t>::iterator it = mTexturesByPath.find(path);
+                    if (it != mTexturesByPath.end()) {
+                        prop.texture = mAsset->textures.Get(it->second);
+                    }
+                }
+
+                if (!prop.texture) {
+                    std::string texId = mAsset->FindUniqueID("", "texture");
+                    prop.texture = mAsset->textures.Create(texId);
+                    mTexturesByPath[path] = prop.texture.GetIndex();
+
+                    std::string imgId = mAsset->FindUniqueID("", "image");
+                    prop.texture->source = mAsset->images.Create(imgId);
+
+                    if (path[0] == '*') { // embedded
+                        aiTexture* tex = mScene->mTextures[atoi(&path[1])];
+
+                        uint8_t* data = reinterpret_cast<uint8_t*>(tex->pcData);
+                        prop.texture->source->SetData(data, tex->mWidth, *mAsset);
+
+                        if (tex->achFormatHint[0]) {
+                            std::string mimeType = "image/";
+                            mimeType += (memcmp(tex->achFormatHint, "jpg", 3) == 0) ? "jpeg" : tex->achFormatHint;
+                            prop.texture->source->mimeType = mimeType;
+                        }
+                    }
+                    else {
+                        prop.texture->source->uri = path;
+                    }
+                }
+            }
+        }
+    }
+
+    if (mat->Get(propName, type, idx, col) == AI_SUCCESS) {
+        prop.color[0] = col.r; prop.color[1] = col.g; prop.color[2] = col.b; prop.color[3] = col.a;
+    }
+}
+
+void glTFExporter::ExportMaterials()
+{
+    aiString aiName;
+    for (unsigned int i = 0; i < mScene->mNumMaterials; ++i) {
+        const aiMaterial* mat = mScene->mMaterials[i];
+
+        
+        std::string name;
+        if (mat->Get(AI_MATKEY_NAME, aiName) == AI_SUCCESS) {
+            name = aiName.C_Str();
+        }
+        name = mAsset->FindUniqueID(name, "material");
+
+        Ref<Material> m = mAsset->materials.Create(name);
+
+        GetMatColorOrTex(mat, m->ambient, AI_MATKEY_COLOR_AMBIENT, aiTextureType_AMBIENT);
+        GetMatColorOrTex(mat, m->diffuse, AI_MATKEY_COLOR_DIFFUSE, aiTextureType_DIFFUSE);
+        GetMatColorOrTex(mat, m->specular, AI_MATKEY_COLOR_SPECULAR, aiTextureType_SPECULAR);
+        GetMatColorOrTex(mat, m->emission, AI_MATKEY_COLOR_EMISSIVE, aiTextureType_EMISSIVE);
+
+        GetMatScalar(mat, m->shininess, AI_MATKEY_SHININESS);
+    }
+}
+
+void glTFExporter::ExportMeshes()
+{
+    for (unsigned int i = 0; i < mScene->mNumMeshes; ++i) {
+        const aiMesh* aim = mScene->mMeshes[i];
+
+        std::string meshId = mAsset->FindUniqueID(aim->mName.C_Str(), "mesh");
+        Ref<Mesh> m = mAsset->meshes.Create(meshId);
+        m->primitives.resize(1);
+        Mesh::Primitive& p = m->primitives.back();
+
+        p.material = mAsset->materials.Get(aim->mMaterialIndex);
+
+        std::string bufferId = mAsset->FindUniqueID(meshId, "buffer");
+
+        Ref<Buffer> b = mAsset->GetBodyBuffer();
+        if (!b) {
+            b = mAsset->buffers.Create(bufferId);
+        }
+
+        Ref<Accessor> v = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mVertices, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT);
+        if (v) p.attributes.position.push_back(v);
+
+        Ref<Accessor> n = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mNormals, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT);
+        if (n) p.attributes.normal.push_back(n);
+
+        for (int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
+            if (aim->mNumUVComponents[i] > 0) {
+                AttribType::Value type = (aim->mNumUVComponents[i] == 2) ? AttribType::VEC2 : AttribType::VEC3;
+                Ref<Accessor> tc = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mTextureCoords[i], AttribType::VEC3, type, ComponentType_FLOAT, true);
+                if (tc) p.attributes.texcoord.push_back(tc);
+            }
+        }
+
+        if (aim->mNumFaces > 0) {
+            unsigned int nIndicesPerFace = aim->mFaces[0].mNumIndices;
+            std::vector<uint16_t> indices;
+            indices.resize(aim->mNumFaces * nIndicesPerFace);
+            for (size_t i = 0; i < aim->mNumFaces; ++i) {
+                for (size_t j = 0; j < nIndicesPerFace; ++j) {
+                    indices[i*nIndicesPerFace + j] = uint16_t(aim->mFaces[i].mIndices[j]);
+                }
+            }
+            p.indices = ExportData(*mAsset, meshId, b, indices.size(), &indices[0], AttribType::SCALAR, AttribType::SCALAR, ComponentType_UNSIGNED_SHORT);
+        }
+
+        switch (aim->mPrimitiveTypes) {
+            case aiPrimitiveType_POLYGON:
+                p.mode = PrimitiveMode_TRIANGLES; break; // TODO implement this
+            case aiPrimitiveType_LINE:
+                p.mode = PrimitiveMode_LINES; break;
+            case aiPrimitiveType_POINT:
+                p.mode = PrimitiveMode_POINTS; break;
+            default: // aiPrimitiveType_TRIANGLE
+                p.mode = PrimitiveMode_TRIANGLES;
+        }
+    }
+}
+
+size_t glTFExporter::ExportNode(const aiNode* n)
+{
+    Ref<Node> node = mAsset->nodes.Create(mAsset->FindUniqueID(n->mName.C_Str(), "node"));
+
+    if (!n->mTransformation.IsIdentity()) {
+        node->matrix.isPresent = true;
+        CopyValue(n->mTransformation, node->matrix.value);
+    }
+
+    for (unsigned int i = 0; i < n->mNumMeshes; ++i) {
+        node->meshes.push_back(mAsset->meshes.Get(n->mMeshes[i]));
+    }
+
+    for (unsigned int i = 0; i < n->mNumChildren; ++i) {
+        size_t idx = ExportNode(n->mChildren[i]);
+        node->children.push_back(mAsset->nodes.Get(idx));
+    }
+
+    return node.GetIndex();
+}
+
+
+void glTFExporter::ExportScene()
+{
+    const char* sceneName = "defaultScene";
+    Ref<Scene> scene = mAsset->scenes.Create(sceneName);
+
+    // root node will be the first one exported (idx 0)
+    if (mAsset->nodes.Size() > 0) {
+        scene->nodes.push_back(mAsset->nodes.Get(size_t(0)));
+    }
+
+    // set as the default scene
+    mAsset->scene = scene;
+}
+
+void glTFExporter::ExportMetadata()
+{
+    glTF::AssetMetadata& asset = mAsset->asset;
+    asset.version = 1;
+
+    char buffer[256];
+    sprintf(buffer, "Open Asset Import Library (assimp v%d.%d.%d)",
+        aiGetVersionMajor(), aiGetVersionMinor(), aiGetVersionRevision());
+
+    asset.generator = buffer;
+}
+
+
+
+
+
+
+
+#endif // ASSIMP_BUILD_NO_GLTF_EXPORTER
+#endif // ASSIMP_BUILD_NO_EXPORT
--- a/code/glTFExporter.h
+++ b/code/glTFExporter.h
@@ -0,0 +1,108 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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 GltfExporter.h
+* Declares the exporter class to write a scene to a gltf/glb file
+*/
+#ifndef AI_GLTFEXPORTER_H_INC
+#define AI_GLTFEXPORTER_H_INC
+
+#include <assimp/types.h>
+#include <assimp/material.h>
+#include <sstream>
+#include <vector>
+#include <map>
+
+#include "boost/scoped_ptr.hpp"
+
+
+struct aiScene;
+struct aiNode;
+struct aiMaterial;
+
+namespace glTF
+{
+    class Asset;
+
+    struct TexProperty;
+}
+
+namespace Assimp
+{
+    class IOSystem;
+    class IOStream;
+    class ExportProperties;
+
+    // ------------------------------------------------------------------------------------------------
+    /** Helper class to export a given scene to an glTF file. */
+    // ------------------------------------------------------------------------------------------------
+    class glTFExporter
+    {
+    public:
+        /// Constructor for a specific scene to export
+        glTFExporter(const char* filename, IOSystem* pIOSystem, const aiScene* pScene,
+            const ExportProperties* pProperties, bool binary);
+
+    private:
+
+        const char* mFilename;
+        IOSystem* mIOSystem;
+        const aiScene* mScene;
+        const ExportProperties* mProperties;
+
+        std::map<std::string, size_t> mTexturesByPath;
+
+        glTF::Asset* mAsset;
+
+        std::vector<unsigned char> mBodyData;
+
+        void WriteBinaryData(IOStream* outfile, std::size_t sceneLength);
+
+        void GetMatColorOrTex(const aiMaterial* mat, glTF::TexProperty& prop, const char* propName, int type, int idx, aiTextureType tt);
+        void ExportMetadata();
+        void ExportMaterials();
+        void ExportMeshes();
+        size_t ExportNode(const aiNode* node);
+        void ExportScene();
+    };
+
+}
+
+#endif
--- a/code/glTFImporter.cpp
+++ b/code/glTFImporter.cpp
@@ -0,0 +1,629 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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.
+
+----------------------------------------------------------------------
+*/
+
+#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#include "glTFImporter.h"
+
+#include "StringComparison.h"
+
+#include "boost/scoped_ptr.hpp"
+
+#include <assimp/Importer.hpp>
+#include <assimp/scene.h>
+#include <assimp/ai_assert.h>
+#include <assimp/DefaultLogger.hpp>
+#include <boost/shared_ptr.hpp>
+
+#include "glTFAsset.h"
+
+using namespace Assimp;
+using namespace glTF;
+
+
+//
+// glTFImporter
+//
+
+static const aiImporterDesc desc = {
+    "glTF Importer",
+    "",
+    "",
+    "",
+    aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour | aiImporterFlags_SupportCompressedFlavour
+        | aiImporterFlags_LimitedSupport | aiImporterFlags_Experimental,
+    0,
+    0,
+    0,
+    0,
+    "gltf glb"
+};
+
+glTFImporter::glTFImporter() 
+: BaseImporter()
+{
+
+}
+
+glTFImporter::~glTFImporter()
+{
+
+}
+
+const aiImporterDesc* glTFImporter::GetInfo() const
+{
+    return &desc;
+}
+
+bool glTFImporter::CanRead(const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
+{
+    const std::string& extension = GetExtension(pFile);
+
+    if (extension == "gltf" || extension == "glb")
+        return true;
+
+    if ((checkSig || !extension.length()) && pIOHandler) {
+        char buffer[4];
+
+        boost::scoped_ptr<IOStream> pStream(pIOHandler->Open(pFile));
+        if (pStream && pStream->Read(buffer, sizeof(buffer), 1) == 1) {
+            if (memcmp(buffer, AI_GLB_MAGIC_NUMBER, sizeof(buffer)) == 0) {
+                return true; // Has GLB header
+            }
+            else if (memcmp(buffer, "{\r\n ", sizeof(buffer)) == 0
+                    || memcmp(buffer, "{\n  ", sizeof(buffer)) == 0) {
+                // seems a JSON file, and we're the only format that can read them
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+
+
+//static void CopyValue(const glTF::vec3& v, aiColor3D& out)
+//{
+//    out.r = v[0]; out.g = v[1]; out.b = v[2];
+//}
+
+static void CopyValue(const glTF::vec4& v, aiColor4D& out)
+{
+    out.r = v[0]; out.g = v[1]; out.b = v[2]; out.a = v[3];
+}
+
+static void CopyValue(const glTF::vec4& v, aiColor3D& out)
+{
+    out.r = v[0]; out.g = v[1]; out.b = v[2];
+}
+
+static void CopyValue(const glTF::vec3& v, aiVector3D& out)
+{
+    out.x = v[0]; out.y = v[1]; out.z = v[2];
+}
+
+static void CopyValue(const glTF::vec4& v, aiQuaternion& out)
+{
+    out.x = v[0]; out.y = v[1]; out.z = v[2]; out.w = v[3];
+}
+
+static void CopyValue(const glTF::mat4& v, aiMatrix4x4& o)
+{
+    o.a1 = v[ 0]; o.b1 = v[ 1]; o.c1 = v[ 2]; o.d1 = v[ 3];
+    o.a2 = v[ 4]; o.b2 = v[ 5]; o.c2 = v[ 6]; o.d2 = v[ 7];
+    o.a3 = v[ 8]; o.b3 = v[ 9]; o.c3 = v[10]; o.d3 = v[11];
+    o.a4 = v[12]; o.b4 = v[13]; o.c4 = v[14]; o.d4 = v[15];
+}
+
+inline void SetMaterialColorProperty(std::vector<int>& embeddedTexIdxs, Asset& r, glTF::TexProperty prop, aiMaterial* mat,
+    aiTextureType texType, const char* pKey, unsigned int type, unsigned int idx)
+{
+    if (prop.texture) {
+        if (prop.texture->source) {
+            aiString uri(prop.texture->source->uri);
+
+            int texIdx = embeddedTexIdxs[prop.texture->source.GetIndex()];
+            if (texIdx != -1) { // embedded
+                // setup texture reference string (copied from ColladaLoader::FindFilenameForEffectTexture)
+                uri.data[0] = '*';
+                uri.length = 1 + ASSIMP_itoa10(uri.data + 1, MAXLEN - 1, texIdx);
+            }
+
+            mat->AddProperty(&uri, _AI_MATKEY_TEXTURE_BASE, texType, 0);
+        }
+    }
+    else {
+        aiColor4D col;
+        CopyValue(prop.color, col);
+        if (col.r != 1.f || col.g != 1.f || col.b != 1.f || col.a != 1.f) {
+            mat->AddProperty(&col, 1, pKey, type, idx);
+        }
+    }
+}
+
+void glTFImporter::ImportMaterials(glTF::Asset& r)
+{
+    mScene->mNumMaterials = r.materials.Size();
+    mScene->mMaterials = new aiMaterial*[mScene->mNumMaterials];
+
+    for (unsigned int i = 0; i < mScene->mNumMaterials; ++i) {
+        aiMaterial* aimat = mScene->mMaterials[i] = new aiMaterial();
+
+        Material& mat = r.materials[i];
+
+        /*if (!mat.name.empty())*/ {
+            aiString str(mat.id /*mat.name*/);
+            aimat->AddProperty(&str, AI_MATKEY_NAME);
+        }
+
+        SetMaterialColorProperty(embeddedTexIdxs, r, mat.diffuse, aimat, aiTextureType_DIFFUSE, AI_MATKEY_COLOR_DIFFUSE);
+        SetMaterialColorProperty(embeddedTexIdxs, r, mat.specular, aimat, aiTextureType_SPECULAR, AI_MATKEY_COLOR_SPECULAR);
+        SetMaterialColorProperty(embeddedTexIdxs, r, mat.ambient, aimat, aiTextureType_AMBIENT, AI_MATKEY_COLOR_AMBIENT);
+
+        if (mat.shininess > 0.f) {
+            aimat->AddProperty(&mat.shininess, 1, AI_MATKEY_SHININESS);
+        }
+    }
+
+    if (mScene->mNumMaterials == 0) {
+        mScene->mNumMaterials = 1;
+        mScene->mMaterials = new aiMaterial*[1];
+        mScene->mMaterials[0] = new aiMaterial();
+    }
+}
+
+
+inline void SetFace(aiFace& face, int a)
+{
+    face.mNumIndices = 1;
+    face.mIndices = new unsigned int[1];
+    face.mIndices[0] = a;
+}
+
+inline void SetFace(aiFace& face, int a, int b)
+{
+    face.mNumIndices = 2;
+    face.mIndices = new unsigned int[2];
+    face.mIndices[0] = a;
+    face.mIndices[1] = b;
+}
+
+inline void SetFace(aiFace& face, int a, int b, int c)
+{
+    face.mNumIndices = 3;
+    face.mIndices = new unsigned int[3];
+    face.mIndices[0] = a;
+    face.mIndices[1] = b;
+    face.mIndices[2] = c;
+}
+
+void glTFImporter::ImportMeshes(glTF::Asset& r)
+{
+    std::vector<aiMesh*> meshes;
+
+    unsigned int k = 0;
+
+    for (unsigned int m = 0; m < r.meshes.Size(); ++m) {
+        Mesh& mesh = r.meshes[m];
+
+        meshOffsets.push_back(k);
+        k += mesh.primitives.size();
+
+        for (unsigned int p = 0; p < mesh.primitives.size(); ++p) {
+            Mesh::Primitive& prim = mesh.primitives[p];
+
+            aiMesh* aim = new aiMesh();
+            meshes.push_back(aim);
+
+            aim->mName = mesh.id;
+            if (mesh.primitives.size() > 1) {
+                size_t& len = aim->mName.length;
+                aim->mName.data[len] = '-';
+                len += 1 + ASSIMP_itoa10(aim->mName.data + len + 1, MAXLEN - len - 1, p);
+            }
+
+            switch (prim.mode) {
+                case PrimitiveMode_POINTS:
+                    aim->mPrimitiveTypes |= aiPrimitiveType_POINT;
+                    break;
+
+                case PrimitiveMode_LINES:
+                case PrimitiveMode_LINE_LOOP:
+                case PrimitiveMode_LINE_STRIP:
+                    aim->mPrimitiveTypes |= aiPrimitiveType_LINE;
+                    break;
+
+                case PrimitiveMode_TRIANGLES:
+                case PrimitiveMode_TRIANGLE_STRIP:
+                case PrimitiveMode_TRIANGLE_FAN:
+                    aim->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE;
+                    break;
+            }
+
+            Mesh::Primitive::Attributes& attr = prim.attributes;
+            if (attr.position.size() > 0 && attr.position[0]) {
+                aim->mNumVertices = attr.position[0]->count;
+                attr.position[0]->ExtractData(aim->mVertices);
+            }
+
+            if (attr.normal.size() > 0 && attr.normal[0]) {
+                attr.normal[0]->ExtractData(aim->mNormals);
+            }
+
+            for (size_t tc = 0; tc < attr.texcoord.size() && tc <= AI_MAX_NUMBER_OF_TEXTURECOORDS; ++tc) {
+                attr.texcoord[tc]->ExtractData(aim->mTextureCoords[tc]);
+                aim->mNumUVComponents[tc] = attr.texcoord[tc]->GetNumComponents();
+            }
+
+
+            if (prim.indices) {
+                aiFace* faces = 0;
+                size_t nFaces = 0;
+
+                unsigned int count = prim.indices->count;
+
+                Accessor::Indexer data = prim.indices->GetIndexer();
+
+                switch (prim.mode) {
+                    case PrimitiveMode_POINTS: {
+                        nFaces = count;
+                        faces = new aiFace[nFaces];
+                        for (unsigned int i = 0; i < count; ++i) {
+                            SetFace(faces[i], data.GetUInt(i));
+                        }
+                        break;
+                    }
+
+                    case PrimitiveMode_LINES: {
+                        nFaces = count / 2;
+                        faces = new aiFace[nFaces];
+                        for (unsigned int i = 0; i < count; i += 2) {
+                            SetFace(faces[i / 2], data.GetUInt(i), data.GetUInt(i + 1));
+                        }
+                        break;
+                    }
+
+                    case PrimitiveMode_LINE_LOOP:
+                    case PrimitiveMode_LINE_STRIP: {
+                        nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
+                        faces = new aiFace[nFaces];
+                        SetFace(faces[0], data.GetUInt(0), data.GetUInt(1));
+                        for (unsigned int i = 2; i < count; ++i) {
+                            SetFace(faces[i - 1], faces[i - 2].mIndices[1], data.GetUInt(i));
+                        }
+                        if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
+                            SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
+                        }
+                        break;
+                    }
+
+                    case PrimitiveMode_TRIANGLES: {
+                        nFaces = count / 3;
+                        faces = new aiFace[nFaces];
+                        for (unsigned int i = 0; i < count; i += 3) {
+                            SetFace(faces[i / 3], data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
+                        }
+                        break;
+                    }
+                    case PrimitiveMode_TRIANGLE_STRIP: {
+                        nFaces = count - 2;
+                        faces = new aiFace[nFaces];
+                        SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
+                        for (unsigned int i = 3; i < count; ++i) {
+                            SetFace(faces[i - 2], faces[i - 1].mIndices[1], faces[i - 1].mIndices[2], data.GetUInt(i));
+                        }
+                        break;
+                    }
+                    case PrimitiveMode_TRIANGLE_FAN:
+                        nFaces = count - 2;
+                        faces = new aiFace[nFaces];
+                        SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
+                        for (unsigned int i = 3; i < count; ++i) {
+                            SetFace(faces[i - 2], faces[0].mIndices[0], faces[i - 1].mIndices[2], data.GetUInt(i));
+                        }
+                        break;
+                }
+
+                if (faces) {
+                    aim->mFaces = faces;
+                    aim->mNumFaces = nFaces;
+                }
+            }
+
+
+            if (prim.material) {
+                aim->mMaterialIndex = prim.material.GetIndex();
+            }
+        }
+    }
+
+    meshOffsets.push_back(k);
+    
+    CopyVector(meshes, mScene->mMeshes, mScene->mNumMeshes);
+}
+
+void glTFImporter::ImportCameras(glTF::Asset& r)
+{
+    if (!r.cameras.Size()) return;
+
+    mScene->mNumCameras = r.cameras.Size();
+    mScene->mCameras = new aiCamera*[r.cameras.Size()];
+
+    for (size_t i = 0; i < r.cameras.Size(); ++i) {
+        Camera& cam = r.cameras[i];
+
+        aiCamera* aicam = mScene->mCameras[i] = new aiCamera();
+
+        if (cam.type == Camera::Perspective) {
+            
+            aicam->mAspect        = cam.perspective.aspectRatio;
+            aicam->mHorizontalFOV = cam.perspective.yfov * aicam->mAspect;
+            aicam->mClipPlaneFar  = cam.perspective.zfar;
+            aicam->mClipPlaneNear = cam.perspective.znear;
+        }
+        else {
+            // assimp does not support orthographic cameras
+        }
+    }
+}
+
+void glTFImporter::ImportLights(glTF::Asset& r)
+{
+    if (!r.lights.Size()) return;
+
+    mScene->mNumLights = r.lights.Size();
+    mScene->mLights = new aiLight*[r.lights.Size()];
+
+    for (size_t i = 0; i < r.lights.Size(); ++i) {
+        Light& l = r.lights[i];
+
+        aiLight* ail = mScene->mLights[i] = new aiLight();
+
+        switch (l.type) {
+            case Light::Type_directional:
+                ail->mType = aiLightSource_DIRECTIONAL; break;
+
+            case Light::Type_spot:
+                ail->mType = aiLightSource_SPOT; break;
+
+            case Light::Type_ambient:
+                ail->mType = aiLightSource_AMBIENT; break;
+
+            default: // Light::Type_point
+                ail->mType = aiLightSource_POINT; break;
+        }
+
+        CopyValue(l.color, ail->mColorAmbient);
+        CopyValue(l.color, ail->mColorDiffuse);
+        CopyValue(l.color, ail->mColorSpecular);
+        
+        ail->mAngleOuterCone = l.falloffAngle;
+        ail->mAngleInnerCone = l.falloffExponent; // TODO fix this, it does not look right at all
+
+        ail->mAttenuationConstant  = l.constantAttenuation;
+        ail->mAttenuationLinear    = l.linearAttenuation;
+        ail->mAttenuationQuadratic = l.quadraticAttenuation;
+    }
+}
+
+
+aiNode* ImportNode(aiScene* pScene, glTF::Asset& r, std::vector<unsigned int>& meshOffsets, glTF::Ref<glTF::Node>& ptr)
+{
+    Node& node = *ptr;
+
+    aiNode* ainode = new aiNode(node.id);
+
+    if (!node.children.empty()) {
+        ainode->mNumChildren = node.children.size();
+        ainode->mChildren = new aiNode*[ainode->mNumChildren];
+
+        for (unsigned int i = 0; i < ainode->mNumChildren; ++i) {
+            aiNode* child = ImportNode(pScene, r, meshOffsets, node.children[i]);
+            child->mParent = ainode;
+            ainode->mChildren[i] = child;
+        }
+    }
+
+    aiMatrix4x4 matrix = ainode->mTransformation;
+    if (node.matrix.isPresent) {
+        CopyValue(node.matrix.value, matrix);
+    }
+    else {
+        if (node.translation.isPresent) {
+            aiVector3D trans;
+            CopyValue(node.translation.value, trans);
+            aiMatrix4x4 t;
+            aiMatrix4x4::Translation(trans, t);
+            matrix = t * matrix;
+        }
+
+        if (node.scale.isPresent) {
+            aiVector3D scal(1.f);
+            CopyValue(node.scale.value, scal);
+            aiMatrix4x4 s;
+            aiMatrix4x4::Scaling(scal, s);
+            matrix = s * matrix;
+        }
+
+
+        if (node.rotation.isPresent) {
+            aiQuaternion rot;
+            CopyValue(node.rotation.value, rot);
+            matrix = aiMatrix4x4(rot.GetMatrix()) * matrix;
+        }
+    }
+
+    if (!node.meshes.empty()) {
+        int count = 0;
+        for (size_t i = 0; i < node.meshes.size(); ++i) {
+            int idx = node.meshes[i].GetIndex();
+            count += meshOffsets[idx + 1] - meshOffsets[idx];
+        }
+
+        ainode->mNumMeshes = count;
+        ainode->mMeshes = new unsigned int[count];
+
+        int k = 0;
+        for (size_t i = 0; i < node.meshes.size(); ++i) {
+            int idx = node.meshes[i].GetIndex();
+            for (size_t j = meshOffsets[idx]; j < meshOffsets[idx + 1]; ++j, ++k) {
+                ainode->mMeshes[k] = j;
+            }
+        }
+    }
+
+    if (node.camera) {
+        pScene->mCameras[node.camera.GetIndex()]->mName = ainode->mName;
+    }
+
+    if (node.light) {
+        pScene->mLights[node.light.GetIndex()]->mName = ainode->mName;
+    }
+
+    return ainode;
+}
+
+void glTFImporter::ImportNodes(glTF::Asset& r)
+{
+    if (!r.scene) return;
+
+    std::vector< Ref<Node> > rootNodes = r.scene->nodes;
+
+    // The root nodes
+    unsigned int numRootNodes = rootNodes.size();
+    if (numRootNodes == 1) { // a single root node: use it
+        mScene->mRootNode = ImportNode(mScene, r, meshOffsets, rootNodes[0]);
+    }
+    else if (numRootNodes > 1) { // more than one root node: create a fake root
+        aiNode* root = new aiNode("ROOT");
+        root->mChildren = new aiNode*[numRootNodes];
+        for (unsigned int i = 0; i < numRootNodes; ++i) {
+            aiNode* node = ImportNode(mScene, r, meshOffsets, rootNodes[i]);
+            node->mParent = root;
+            root->mChildren[root->mNumChildren++] = node;
+        }
+        mScene->mRootNode = root;
+    }
+
+    //if (!mScene->mRootNode) {
+    //  mScene->mRootNode = new aiNode("EMPTY");
+    //}
+}
+
+void glTFImporter::ImportEmbeddedTextures(glTF::Asset& r)
+{
+    embeddedTexIdxs.resize(r.images.Size(), -1);
+
+    int numEmbeddedTexs = 0;
+    for (size_t i = 0; i < r.images.Size(); ++i) {
+        if (r.images[i].HasData())
+            numEmbeddedTexs += 1;
+    }
+
+    if (numEmbeddedTexs == 0)
+        return;
+
+    mScene->mTextures = new aiTexture*[numEmbeddedTexs];
+
+    // Add the embedded textures
+    for (size_t i = 0; i < r.images.Size(); ++i) {
+        Image img = r.images[i];
+        if (!img.HasData()) continue;
+
+        int idx = mScene->mNumTextures++;
+        embeddedTexIdxs[i] = idx;
+
+        aiTexture* tex = mScene->mTextures[idx] = new aiTexture();
+
+        size_t length = img.GetDataLength();
+        void* data = img.StealData();
+
+        tex->mWidth = static_cast<unsigned int>(length);
+        tex->mHeight = 0;
+        tex->pcData = reinterpret_cast<aiTexel*>(data);
+
+        if (!img.mimeType.empty()) {
+            const char* ext = strchr(img.mimeType.c_str(), '/') + 1;
+            if (ext) {
+                if (strcmp(ext, "jpeg") == 0) ext = "jpg";
+
+                size_t len = strlen(ext);
+                if (len <= 3) {
+                    strcpy(tex->achFormatHint, ext);
+                }
+            }
+        }
+    }
+}
+
+void glTFImporter::InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) {
+
+    this->mScene = pScene;
+    
+    // read the asset file
+    glTF::Asset asset(pIOHandler);
+    asset.Load(pFile, GetExtension(pFile) == "glb");
+
+
+    //
+    // Copy the data out
+    //
+
+    ImportEmbeddedTextures(asset);
+    ImportMaterials(asset);
+
+    ImportMeshes(asset);
+
+    ImportCameras(asset);
+    ImportLights(asset);
+
+    ImportNodes(asset);
+
+    // TODO: it does not split the loaded vertices, should it?
+    pScene->mFlags |= AI_SCENE_FLAGS_NON_VERBOSE_FORMAT;
+
+    if (pScene->mNumMeshes == 0) {
+        pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
+    }
+}
+
+#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
+
--- a/code/glTFImporter.h
+++ b/code/glTFImporter.h
@@ -0,0 +1,90 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2015, 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.
+
+----------------------------------------------------------------------
+*/
+#ifndef AI_GLTFIMPORTER_H_INC
+#define AI_GLTFIMPORTER_H_INC
+
+#include "BaseImporter.h"
+#include "DefaultIOSystem.h"
+
+struct aiNode;
+
+
+namespace glTF
+{
+    class Asset;
+}
+
+namespace Assimp {
+
+/**
+ * Load the glTF format.
+ * https://github.com/KhronosGroup/glTF/tree/master/specification
+ */
+class glTFImporter : public BaseImporter{
+public:
+    glTFImporter();
+    virtual ~glTFImporter();
+    virtual bool CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig ) const;
+
+protected:
+    virtual const aiImporterDesc* GetInfo() const;
+    virtual void InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler );
+
+private:
+
+    std::vector<unsigned int> meshOffsets;
+
+    std::vector<int> embeddedTexIdxs;
+
+    aiScene* mScene;
+
+    void ImportEmbeddedTextures(glTF::Asset& a);
+    void ImportMaterials(glTF::Asset& a);
+    void ImportMeshes(glTF::Asset& a);
+    void ImportCameras(glTF::Asset& a);
+    void ImportLights(glTF::Asset& a);
+    void ImportNodes(glTF::Asset& a);
+
+};
+
+} // Namespace assimp
+
+#endif // AI_GLTFIMPORTER_H_INC
+
--- a/code/irrXMLWrapper.h
+++ b/code/irrXMLWrapper.h
@@ -76,7 +76,7 @@ public:

    // ----------------------------------------------------------------------------------
    //! Construction from an existing IOStream
-    CIrrXML_IOStreamReader(IOStream* _stream)
+    explicit CIrrXML_IOStreamReader(IOStream* _stream)
        : stream (_stream)
        , t (0)
    {