Merge branch 'master' into master

code/AssetLib/ASE/ASELoader.cpp

@@ -44,7 +44,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ASSIMP_BUILD_NO_ASE_IMPORTER
-
 #ifndef ASSIMP_BUILD_NO_3DS_IMPORTER
 
 // internal headers
@@ -322,21 +321,6 @@ void ASEImporter::BuildAnimations(const std::vector<BaseNode *> &nodes) {
                 aiNodeAnim *nd = pcAnim->mChannels[iNum++] = new aiNodeAnim();
                 nd->mNodeName.Set(me->mName + ".Target");
 
-                // If there is no input position channel we will need
-                // to supply the default position from the node's
-                // local transformation matrix.
-                /*TargetAnimationHelper helper;
-                if (me->mAnim.akeyPositions.empty())
-                {
-                    aiMatrix4x4& mat = (*i)->mTransform;
-                    helper.SetFixedMainAnimationChannel(aiVector3D(
-                        mat.a4, mat.b4, mat.c4));
-                }
-                else helper.SetMainAnimationChannel (&me->mAnim.akeyPositions);
-                helper.SetTargetAnimationChannel (&me->mTargetAnim.akeyPositions);
-
-                helper.Process(&me->mTargetAnim.akeyPositions);*/
-
                 // Allocate the key array and fill it
                 nd->mNumPositionKeys = (unsigned int)me->mTargetAnim.akeyPositions.size();
                 nd->mPositionKeys = new aiVectorKey[nd->mNumPositionKeys];

code/AssetLib/FBX/FBXBinaryTokenizer.cpp

@@ -342,8 +342,7 @@ void ReadData(const char*& sbegin_out, const char*& send_out, const char* input,
 
 
 // ------------------------------------------------------------------------------------------------
-bool ReadScope(TokenList& output_tokens, const char* input, const char*& cursor, const char* end, bool const is64bits)
-{
+bool ReadScope(TokenList &output_tokens, StackAllocator &token_allocator, const char *input, const char *&cursor, const char *end, bool const is64bits) {
     // the first word contains the offset at which this block ends
 	const uint64_t end_offset = is64bits ? ReadDoubleWord(input, cursor, end) : ReadWord(input, cursor, end);
 
@@ -409,7 +408,7 @@ bool ReadScope(TokenList& output_tokens, const char* input, const char*& cursor,
 
         // XXX this is vulnerable to stack overflowing ..
         while(Offset(input, cursor) < end_offset - sentinel_block_length) {
-			ReadScope(output_tokens, input, cursor, input + end_offset - sentinel_block_length, is64bits);
+            ReadScope(output_tokens, token_allocator, input, cursor, input + end_offset - sentinel_block_length, is64bits);
         }
         output_tokens.push_back(new_Token(cursor, cursor + 1, TokenType_CLOSE_BRACKET, Offset(input, cursor) ));
 
@@ -432,8 +431,7 @@ bool ReadScope(TokenList& output_tokens, const char* input, const char*& cursor,
 
 // ------------------------------------------------------------------------------------------------
 // TODO: Test FBX Binary files newer than the 7500 version to check if the 64 bits address behaviour is consistent
-void TokenizeBinary(TokenList& output_tokens, const char* input, size_t length)
-{
+void TokenizeBinary(TokenList &output_tokens, const char *input, size_t length, StackAllocator &token_allocator) {
 	ai_assert(input);
 	ASSIMP_LOG_DEBUG("Tokenizing binary FBX file");
 
@@ -466,7 +464,7 @@ void TokenizeBinary(TokenList& output_tokens, const char* input, size_t length)
     try
     {
         while (cursor < end ) {
-		    if (!ReadScope(output_tokens, input, cursor, input + length, is64bits)) {
+            if (!ReadScope(output_tokens, token_allocator, input, cursor, input + length, is64bits)) {
                 break;
             }
         }

code/AssetLib/FBX/FBXDocument.cpp

@@ -243,7 +243,7 @@ FileGlobalSettings::FileGlobalSettings(const Document &doc, std::shared_ptr<cons
 }
 
 // ------------------------------------------------------------------------------------------------
-Document::Document(const Parser& parser, const ImportSettings& settings) :
+Document::Document(Parser& parser, const ImportSettings& settings) :
      settings(settings), parser(parser) {
 	ASSIMP_LOG_DEBUG("Creating FBX Document");
 
@@ -265,13 +265,17 @@ Document::Document(const Parser& parser, const ImportSettings& settings) :
 }
 
 // ------------------------------------------------------------------------------------------------
-Document::~Document() {
-    for(ObjectMap::value_type& v : objects) {
-        delete v.second;
+Document::~Document()
+{
+	// The document does not own the memory for the following objects, but we need to call their d'tor
+	// so they can properly free memory like string members:
+	
+    for (ObjectMap::value_type &v : objects) {
+        delete_LazyObject(v.second);
     }
 
-    for(ConnectionMap::value_type& v : src_connections) {
-        delete v.second;
+    for (ConnectionMap::value_type &v : src_connections) {
+        delete_Connection(v.second);
     }
     // |dest_connections| contain the same Connection objects as the |src_connections|
 }
@@ -356,9 +360,11 @@ void Document::ReadObjects() {
         DOMError("no Objects dictionary found");
     }
 
+    StackAllocator &allocator = parser.GetAllocator();
+
     // add a dummy entry to represent the Model::RootNode object (id 0),
     // which is only indirectly defined in the input file
-    objects[0] = new LazyObject(0L, *eobjects, *this);
+    objects[0] = new_LazyObject(0L, *eobjects, *this);
 
     const Scope& sobjects = *eobjects->Compound();
     for(const ElementMap::value_type& el : sobjects.Elements()) {
@@ -387,7 +393,7 @@ void Document::ReadObjects() {
             delete foundObject->second;
         }
 
-        objects[id] = new LazyObject(id, *el.second, *this);
+        objects[id] = new_LazyObject(id, *el.second, *this);
 
         // grab all animation stacks upfront since there is no listing of them
         if(!strcmp(el.first.c_str(),"AnimationStack")) {
@@ -454,8 +460,10 @@ void Document::ReadPropertyTemplates() {
 }
 
 // ------------------------------------------------------------------------------------------------
-void Document::ReadConnections() {
-    const Scope& sc = parser.GetRootScope();
+void Document::ReadConnections()
+{
+    StackAllocator &allocator = parser.GetAllocator();
+    const Scope &sc = parser.GetRootScope();
     // read property templates from "Definitions" section
     const Element* const econns = sc["Connections"];
     if(!econns || !econns->Compound()) {
@@ -494,7 +502,7 @@ void Document::ReadConnections() {
         }
 
         // add new connection
-        const Connection* const c = new Connection(insertionOrder++,src,dest,prop,*this);
+        const Connection* const c = new_Connection(insertionOrder++,src,dest,prop,*this);
         src_connections.insert(ConnectionMap::value_type(src,c));
         dest_connections.insert(ConnectionMap::value_type(dest,c));
     }

code/AssetLib/FBX/FBXDocument.h

@@ -81,6 +81,10 @@ class BlendShape;
 class Skin;
 class Cluster;
 
+#define new_LazyObject new (allocator.Allocate(sizeof(LazyObject))) LazyObject
+#define new_Connection new (allocator.Allocate(sizeof(Connection))) Connection
+#define delete_LazyObject(_p) (_p)->~LazyObject()
+#define delete_Connection(_p) (_p)->~Connection()
 
 /** Represents a delay-parsed FBX objects. Many objects in the scene
  *  are not needed by assimp, so it makes no sense to parse them
@@ -1073,7 +1077,7 @@ private:
 /** DOM root for a FBX file */
 class Document {
 public:
-    Document(const Parser& parser, const ImportSettings& settings);
+    Document(Parser& parser, const ImportSettings& settings);
 
     ~Document();
 
@@ -1157,7 +1161,7 @@ private:
     const ImportSettings& settings;
 
     ObjectMap objects;
-    const Parser& parser;
+    Parser& parser;
 
     PropertyTemplateMap templates;
     ConnectionMap src_connections;

code/AssetLib/FBX/FBXImporter.cpp

@@ -152,19 +152,19 @@ void FBXImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSy
 	// broad-phase tokenized pass in which we identify the core
 	// syntax elements of FBX (brackets, commas, key:value mappings)
 	TokenList tokens;
-	try {
-
+    Assimp::StackAllocator tempAllocator;
+    try {
 		bool is_binary = false;
 		if (!strncmp(begin, "Kaydara FBX Binary", 18)) {
 			is_binary = true;
-			TokenizeBinary(tokens, begin, contents.size());
+            TokenizeBinary(tokens, begin, contents.size(), tempAllocator);
 		} else {
-			Tokenize(tokens, begin);
+            Tokenize(tokens, begin, tempAllocator);
 		}
 
 		// use this information to construct a very rudimentary
 		// parse-tree representing the FBX scope structure
-		Parser parser(tokens, is_binary);
+        Parser parser(tokens, tempAllocator, is_binary);
 
 		// take the raw parse-tree and convert it to a FBX DOM
 		Document doc(parser, mSettings);
@@ -183,10 +183,12 @@ void FBXImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSy
 		// assimp universal format (M)
 		SetFileScale(size_relative_to_cm * 0.01f);
 
-		std::for_each(tokens.begin(), tokens.end(), Util::delete_fun<Token>());
-	} catch (std::exception &) {
-		std::for_each(tokens.begin(), tokens.end(), Util::delete_fun<Token>());
-		throw;
+		// This collection does not own the memory for the tokens, but we need to call their d'tor
+        std::for_each(tokens.begin(), tokens.end(), Util::destructor_fun<Token>());
+
+    } catch (std::exception &) {
+        std::for_each(tokens.begin(), tokens.end(), Util::destructor_fun<Token>());
+        throw;
 	}
 }
 

code/AssetLib/FBX/FBXParser.cpp

@@ -116,8 +116,11 @@ namespace Assimp {
 namespace FBX {
 
 // ------------------------------------------------------------------------------------------------
-Element::Element(const Token& key_token, Parser& parser) : key_token(key_token) {
+Element::Element(const Token& key_token, Parser& parser) :
+    key_token(key_token), compound(nullptr)
+{
     TokenPtr n = nullptr;
+    StackAllocator &allocator = parser.GetAllocator();
     do {
         n = parser.AdvanceToNextToken();
         if(!n) {
@@ -146,7 +149,7 @@ Element::Element(const Token& key_token, Parser& parser) : key_token(key_token)
         }
 
         if (n->Type() == TokenType_OPEN_BRACKET) {
-            compound.reset(new Scope(parser));
+            compound = new_Scope(parser);
 
             // current token should be a TOK_CLOSE_BRACKET
             n = parser.CurrentToken();
@@ -164,6 +167,15 @@ Element::Element(const Token& key_token, Parser& parser) : key_token(key_token)
 }
 
 // ------------------------------------------------------------------------------------------------
+Element::~Element()
+{
+    if (compound) {
+        delete_Scope(compound);
+    }
+
+     // no need to delete tokens, they are owned by the parser
+}
+
 Scope::Scope(Parser& parser,bool topLevel)
 {
     if(!topLevel) {
@@ -173,6 +185,7 @@ Scope::Scope(Parser& parser,bool topLevel)
         }
     }
 
+    StackAllocator &allocator = parser.GetAllocator();
     TokenPtr n = parser.AdvanceToNextToken();
     if (n == nullptr) {
         ParseError("unexpected end of file");
@@ -207,22 +220,27 @@ Scope::Scope(Parser& parser,bool topLevel)
 }
 
 // ------------------------------------------------------------------------------------------------
-Scope::~Scope() {
-    for(ElementMap::value_type& v : elements) {
-        delete v.second;
+Scope::~Scope()
+{
+	// This collection does not own the memory for the elements, but we need to call their d'tor:
+
+    for (ElementMap::value_type &v : elements) {
+        delete_Element(v.second);
     }
 }
 
 // ------------------------------------------------------------------------------------------------
-Parser::Parser (const TokenList& tokens, bool is_binary)
-: tokens(tokens)
-, last()
-, current()
-, cursor(tokens.begin())
-, is_binary(is_binary)
+Parser::Parser(const TokenList &tokens, StackAllocator &allocator, bool is_binary) :
+        tokens(tokens), allocator(allocator), last(), current(), cursor(tokens.begin()), is_binary(is_binary)
 {
     ASSIMP_LOG_DEBUG("Parsing FBX tokens");
-    root.reset(new Scope(*this,true));
+    root = new_Scope(*this, true);
+}
+
+// ------------------------------------------------------------------------------------------------
+Parser::~Parser()
+{
+    delete_Scope(root);
 }
 
 // ------------------------------------------------------------------------------------------------

code/AssetLib/FBX/FBXParser.h

@@ -52,6 +52,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/LogAux.h>
 #include <assimp/fast_atof.h>
 
+#include "Common/StackAllocator.h"
 #include "FBXCompileConfig.h"
 #include "FBXTokenizer.h"
 
@@ -63,14 +64,14 @@ class Parser;
 class Element;
 
 // XXX should use C++11's unique_ptr - but assimp's need to keep working with 03
-typedef std::vector< Scope* > ScopeList;
-typedef std::fbx_unordered_multimap< std::string, Element* > ElementMap;
-
-typedef std::pair<ElementMap::const_iterator,ElementMap::const_iterator> ElementCollection;
-
-#   define new_Scope new Scope
-#   define new_Element new Element
+using ScopeList = std::vector<Scope*>;
+using ElementMap = std::fbx_unordered_multimap< std::string, Element*>;
+using ElementCollection = std::pair<ElementMap::const_iterator,ElementMap::const_iterator>;
 
+#define new_Scope new (allocator.Allocate(sizeof(Scope))) Scope
+#define new_Element new (allocator.Allocate(sizeof(Element))) Element
+#define delete_Scope(_p) (_p)->~Scope()
+#define delete_Element(_p) (_p)->~Element()
 
 /** FBX data entity that consists of a key:value tuple.
  *
@@ -82,15 +83,16 @@ typedef std::pair<ElementMap::const_iterator,ElementMap::const_iterator> Element
  *  @endverbatim
  *
  *  As can be seen in this sample, elements can contain nested #Scope
- *  as their trailing member.  **/
+ *  as their trailing member.  
+**/
 class Element
 {
 public:
     Element(const Token& key_token, Parser& parser);
-    ~Element() = default;
+    ~Element();
 
     const Scope* Compound() const {
-        return compound.get();
+        return compound;
     }
 
     const Token& KeyToken() const {
@@ -104,7 +106,7 @@ public:
 private:
     const Token& key_token;
     TokenList tokens;
-    std::unique_ptr<Scope> compound;
+    Scope* compound;
 };
 
 /** FBX data entity that consists of a 'scope', a collection
@@ -159,8 +161,8 @@ class Parser
 public:
     /** Parse given a token list. Does not take ownership of the tokens -
      *  the objects must persist during the entire parser lifetime */
-    Parser (const TokenList& tokens,bool is_binary);
-    ~Parser() = default;
+    Parser(const TokenList &tokens, StackAllocator &allocator, bool is_binary);
+    ~Parser();
 
     const Scope& GetRootScope() const {
         return *root;
@@ -170,6 +172,10 @@ public:
         return is_binary;
     }
 
+    StackAllocator &GetAllocator() {
+        return allocator;
+    }
+
 private:
     friend class Scope;
     friend class Element;
@@ -180,10 +186,10 @@ private:
 
 private:
     const TokenList& tokens;
-
+    StackAllocator &allocator;
     TokenPtr last, current;
     TokenList::const_iterator cursor;
-    std::unique_ptr<Scope> root;
+    Scope *root;
 
     const bool is_binary;
 };

code/AssetLib/FBX/FBXTokenizer.cpp

@@ -94,7 +94,8 @@ AI_WONT_RETURN void TokenizeError(const std::string& message, unsigned int line,
 
 // process a potential data token up to 'cur', adding it to 'output_tokens'.
 // ------------------------------------------------------------------------------------------------
-void ProcessDataToken( TokenList& output_tokens, const char*& start, const char*& end,
+void ProcessDataToken(TokenList &output_tokens, StackAllocator &token_allocator,
+                      const char*& start, const char*& end,
                       unsigned int line,
                       unsigned int column,
                       TokenType type = TokenType_DATA,
@@ -131,8 +132,7 @@ void ProcessDataToken( TokenList& output_tokens, const char*& start, const char*
 }
 
 // ------------------------------------------------------------------------------------------------
-void Tokenize(TokenList& output_tokens, const char* input)
-{
+void Tokenize(TokenList &output_tokens, const char *input, StackAllocator &token_allocator) {
 	ai_assert(input);
 	ASSIMP_LOG_DEBUG("Tokenizing ASCII FBX file");
 
@@ -164,7 +164,7 @@ void Tokenize(TokenList& output_tokens, const char* input)
                 in_double_quotes = false;
                 token_end = cur;
 
-                ProcessDataToken(output_tokens,token_begin,token_end,line,column);
+                ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column);
                 pending_data_token = false;
             }
             continue;
@@ -181,30 +181,30 @@ void Tokenize(TokenList& output_tokens, const char* input)
             continue;
 
         case ';':
-            ProcessDataToken(output_tokens,token_begin,token_end,line,column);
+            ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column);
             comment = true;
             continue;
 
         case '{':
-            ProcessDataToken(output_tokens,token_begin,token_end, line, column);
+            ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column);
             output_tokens.push_back(new_Token(cur,cur+1,TokenType_OPEN_BRACKET,line,column));
             continue;
 
         case '}':
-            ProcessDataToken(output_tokens,token_begin,token_end,line,column);
+            ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column);
             output_tokens.push_back(new_Token(cur,cur+1,TokenType_CLOSE_BRACKET,line,column));
             continue;
 
         case ',':
             if (pending_data_token) {
-                ProcessDataToken(output_tokens,token_begin,token_end,line,column,TokenType_DATA,true);
+                ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column, TokenType_DATA, true);
             }
             output_tokens.push_back(new_Token(cur,cur+1,TokenType_COMMA,line,column));
             continue;
 
         case ':':
             if (pending_data_token) {
-                ProcessDataToken(output_tokens,token_begin,token_end,line,column,TokenType_KEY,true);
+                ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column, TokenType_KEY, true);
             }
             else {
                 TokenizeError("unexpected colon", line, column);
@@ -226,7 +226,7 @@ void Tokenize(TokenList& output_tokens, const char* input)
                     }
                 }
 
-                ProcessDataToken(output_tokens,token_begin,token_end,line,column,type);
+                ProcessDataToken(output_tokens, token_allocator, token_begin, token_end, line, column, type);
             }
 
             pending_data_token = false;

code/AssetLib/FBX/FBXTokenizer.h

@@ -47,6 +47,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define INCLUDED_AI_FBX_TOKENIZER_H
 
 #include "FBXCompileConfig.h"
+#include "Common/StackAllocator.h"
 #include <assimp/ai_assert.h>
 #include <assimp/defs.h>
 #include <vector>
@@ -157,7 +158,8 @@ private:
 typedef const Token* TokenPtr;
 typedef std::vector< TokenPtr > TokenList;
 
-#define new_Token new Token
+#define new_Token new (token_allocator.Allocate(sizeof(Token))) Token
+#define delete_Token(_p) (_p)->~Token()
 
 
 /** Main FBX tokenizer function. Transform input buffer into a list of preprocessed tokens.
@@ -167,7 +169,7 @@ typedef std::vector< TokenPtr > TokenList;
  * @param output_tokens Receives a list of all tokens in the input data.
  * @param input_buffer Textual input buffer to be processed, 0-terminated.
  * @throw DeadlyImportError if something goes wrong */
-void Tokenize(TokenList& output_tokens, const char* input);
+void Tokenize(TokenList &output_tokens, const char *input, StackAllocator &tokenAllocator);
 
 
 /** Tokenizer function for binary FBX files.
@@ -178,7 +180,7 @@ void Tokenize(TokenList& output_tokens, const char* input);
  * @param input_buffer Binary input buffer to be processed.
  * @param length Length of input buffer, in bytes. There is no 0-terminal.
  * @throw DeadlyImportError if something goes wrong */
-void TokenizeBinary(TokenList& output_tokens, const char* input, size_t length);
+void TokenizeBinary(TokenList &output_tokens, const char *input, size_t length, StackAllocator &tokenAllocator);
 
 
 } // ! FBX

code/AssetLib/FBX/FBXUtil.h

@@ -66,6 +66,17 @@ struct delete_fun
     }
 };
 
+/** helper for std::for_each to call the destructor on all items in a container without freeing their heap*/
+template <typename T>
+struct destructor_fun {
+    void operator()(const volatile T* del) {
+        if (del) {
+            del->~T();
+        }
+    }
+};
+
+
 /** Get a string representation for a #TokenType. */
 const char* TokenTypeString(TokenType t);
 

code/AssetLib/X/XFileImporter.cpp

@@ -578,7 +578,7 @@ void XFileImporter::ConvertMaterials( aiScene* pScene, std::vector<XFile::Materi
                 aiString name;
                 pScene->mMaterials[b]->Get( AI_MATKEY_NAME, name);
                 if( strcmp( name.C_Str(), oldMat.mName.data()) == 0 ) {
-                    oldMat.sceneIndex = a;
+                    oldMat.sceneIndex = b;
                     break;
                 }
             }

code/AssetLib/glTF2/glTF2Asset.h

@@ -44,6 +44,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * glTF Extensions Support:
  *   KHR_materials_pbrSpecularGlossiness full
+ *   KHR_materials_specular full
  *   KHR_materials_unlit full
  *   KHR_lights_punctual full
  *   KHR_materials_sheen full
@@ -710,6 +711,7 @@ const vec4 defaultBaseColor = { 1, 1, 1, 1 };
 const vec3 defaultEmissiveFactor = { 0, 0, 0 };
 const vec4 defaultDiffuseFactor = { 1, 1, 1, 1 };
 const vec3 defaultSpecularFactor = { 1, 1, 1 };
+const vec3 defaultSpecularColorFactor = { 0, 0, 0 };
 const vec3 defaultSheenFactor = { 0, 0, 0 };
 const vec3 defaultAttenuationColor = { 1, 1, 1 };
 
@@ -753,6 +755,16 @@ struct PbrSpecularGlossiness {
     void SetDefaults();
 };
 
+struct MaterialSpecular {
+    float specularFactor;
+    vec3 specularColorFactor;
+    TextureInfo specularTexture;
+    TextureInfo specularColorTexture;
+
+    MaterialSpecular() { SetDefaults(); }
+    void SetDefaults();
+};
+
 struct MaterialSheen {
     vec3 sheenColorFactor;
     float sheenRoughnessFactor;
@@ -817,6 +829,9 @@ struct Material : public Object {
     //extension: KHR_materials_pbrSpecularGlossiness
     Nullable<PbrSpecularGlossiness> pbrSpecularGlossiness;
 
+    //extension: KHR_materials_specular
+    Nullable<MaterialSpecular> materialSpecular;
+
     //extension: KHR_materials_sheen
     Nullable<MaterialSheen> materialSheen;
 
@@ -1099,6 +1114,7 @@ public:
     //! Keeps info about the enabled extensions
     struct Extensions {
         bool KHR_materials_pbrSpecularGlossiness;
+        bool KHR_materials_specular;
         bool KHR_materials_unlit;
         bool KHR_lights_punctual;
         bool KHR_texture_transform;
@@ -1113,13 +1129,14 @@ public:
         bool KHR_texture_basisu;
 
         Extensions() :
-                KHR_materials_pbrSpecularGlossiness(false),
-                KHR_materials_unlit(false),
-                KHR_lights_punctual(false),
-                KHR_texture_transform(false),
-                KHR_materials_sheen(false),
-                KHR_materials_clearcoat(false),
-                KHR_materials_transmission(false),
+                KHR_materials_pbrSpecularGlossiness(false), 
+                KHR_materials_specular(false), 
+                KHR_materials_unlit(false), 
+                KHR_lights_punctual(false), 
+                KHR_texture_transform(false), 
+                KHR_materials_sheen(false), 
+                KHR_materials_clearcoat(false), 
+                KHR_materials_transmission(false), 
                 KHR_materials_volume(false),
                 KHR_materials_ior(false),
                 KHR_materials_emissive_strength(false),

code/AssetLib/glTF2/glTF2Asset.inl

@@ -1263,6 +1263,19 @@ inline void Material::Read(Value &material, Asset &r) {
                 this->pbrSpecularGlossiness = Nullable<PbrSpecularGlossiness>(pbrSG);
             }
         }
+        
+        if (r.extensionsUsed.KHR_materials_specular) {
+            if (Value *curMatSpecular = FindObject(*extensions, "KHR_materials_specular")) {
+                MaterialSpecular specular;
+
+                ReadMember(*curMatSpecular, "specularFactor", specular.specularFactor);
+                ReadTextureProperty(r, *curMatSpecular, "specularTexture", specular.specularTexture);
+                ReadMember(*curMatSpecular, "specularColorFactor", specular.specularColorFactor);
+                ReadTextureProperty(r, *curMatSpecular, "specularColorTexture", specular.specularColorTexture);
+
+                this->materialSpecular = Nullable<MaterialSpecular>(specular);
+            }
+        }
 
         // Extension KHR_texture_transform is handled in ReadTextureProperty
 
@@ -1361,6 +1374,12 @@ inline void PbrSpecularGlossiness::SetDefaults() {
     glossinessFactor = 1.0f;
 }
 
+inline void MaterialSpecular::SetDefaults() {
+    //KHR_materials_specular properties
+    SetVector(specularColorFactor, defaultSpecularColorFactor);
+    specularFactor = 0.f;
+}
+
 inline void MaterialSheen::SetDefaults() {
     //KHR_materials_sheen properties
     SetVector(sheenColorFactor, defaultSheenFactor);
@@ -2047,6 +2066,7 @@ inline void Asset::ReadExtensionsUsed(Document &doc) {
     }
 
     CHECK_EXT(KHR_materials_pbrSpecularGlossiness);
+    CHECK_EXT(KHR_materials_specular);
     CHECK_EXT(KHR_materials_unlit);
     CHECK_EXT(KHR_lights_punctual);
     CHECK_EXT(KHR_texture_transform);

code/AssetLib/glTF2/glTF2AssetWriter.h

@@ -45,6 +45,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * glTF Extensions Support:
  *   KHR_materials_pbrSpecularGlossiness: full
+ *   KHR_materials_specular: full
  *   KHR_materials_unlit: full
  *   KHR_materials_sheen: full
  *   KHR_materials_clearcoat: full

code/AssetLib/glTF2/glTF2AssetWriter.inl

@@ -418,6 +418,26 @@ namespace glTF2 {
           exts.AddMember("KHR_materials_unlit", unlit, w.mAl);
         }
 
+        if (m.materialSpecular.isPresent) {
+            Value materialSpecular(rapidjson::Type::kObjectType);
+            materialSpecular.SetObject();
+
+            MaterialSpecular &specular = m.materialSpecular.value;
+
+            if (specular.specularFactor != 0.0f) {
+                WriteFloat(materialSpecular, specular.specularFactor, "specularFactor", w.mAl);
+                WriteTex(materialSpecular, specular.specularTexture, "specularTexture", w.mAl);
+            }
+            if (specular.specularColorFactor[0] != defaultSpecularColorFactor[0] && specular.specularColorFactor[1] != defaultSpecularColorFactor[1] && specular.specularColorFactor[2] != defaultSpecularColorFactor[2]) {
+                WriteVec(materialSpecular, specular.specularColorFactor, "specularColorFactor", w.mAl);
+                WriteTex(materialSpecular, specular.specularColorTexture, "specularColorTexture", w.mAl);
+            }
+
+            if (!materialSpecular.ObjectEmpty()) {
+                exts.AddMember("KHR_materials_specular", materialSpecular, w.mAl);
+            }
+        }
+
         if (m.materialSheen.isPresent) {
             Value materialSheen(rapidjson::Type::kObjectType);
 
@@ -550,7 +570,7 @@ namespace glTF2 {
 
     inline void Write(Value& obj, Mesh& m, AssetWriter& w)
     {
-		/****************** Primitives *******************/
+        /****************** Primitives *******************/
         Value primitives;
         primitives.SetArray();
         primitives.Reserve(unsigned(m.primitives.size()), w.mAl);
@@ -929,6 +949,10 @@ namespace glTF2 {
               exts.PushBack(StringRef("KHR_materials_unlit"), mAl);
             }
 
+            if (this->mAsset.extensionsUsed.KHR_materials_specular) {
+                exts.PushBack(StringRef("KHR_materials_specular"), mAl);
+            }
+
             if (this->mAsset.extensionsUsed.KHR_materials_sheen) {
                 exts.PushBack(StringRef("KHR_materials_sheen"), mAl);
             }
@@ -980,7 +1004,7 @@ namespace glTF2 {
         if (d.mObjs.empty()) return;
 
         Value* container = &mDoc;
-		const char* context = "Document";
+        const char* context = "Document";
 
         if (d.mExtId) {
             Value* exts = FindObject(mDoc, "extensions");

code/AssetLib/glTF2/glTF2Exporter.cpp

@@ -640,11 +640,10 @@ aiReturn glTF2Exporter::GetMatColor(const aiMaterial &mat, vec3 &prop, const cha
     return result;
 }
 
+// This extension has been deprecated, only export with the specific flag enabled, defaults to false. Uses KHR_material_specular default.
 bool glTF2Exporter::GetMatSpecGloss(const aiMaterial &mat, glTF2::PbrSpecularGlossiness &pbrSG) {
     bool result = false;
     // If has Glossiness, a Specular Color or Specular Texture, use the KHR_materials_pbrSpecularGlossiness extension
-    // NOTE: This extension is being considered for deprecation (Dec 2020), may be replaced by KHR_material_specular
-
     if (mat.Get(AI_MATKEY_GLOSSINESS_FACTOR, pbrSG.glossinessFactor) == AI_SUCCESS) {
         result = true;
     } else {
@@ -674,6 +673,25 @@ bool glTF2Exporter::GetMatSpecGloss(const aiMaterial &mat, glTF2::PbrSpecularGlo
     return result;
 }
 
+bool glTF2Exporter::GetMatSpecular(const aiMaterial &mat, glTF2::MaterialSpecular &specular) {
+    // Specular requires either/or, default factors of zero disables specular, so do not export
+    if (GetMatColor(mat, specular.specularColorFactor, AI_MATKEY_COLOR_SPECULAR) != AI_SUCCESS || mat.Get(AI_MATKEY_SPECULAR_FACTOR, specular.specularFactor) != AI_SUCCESS) {
+        return false;
+    }
+    // The spec states that the default is 1.0 and [1.0, 1.0, 1.0]. We if both are 0, which should disable specular. Otherwise, if one is 0, set to 1.0
+    const bool colorFactorIsZero = specular.specularColorFactor[0] == defaultSpecularColorFactor[0] && specular.specularColorFactor[1] == defaultSpecularColorFactor[1] && specular.specularColorFactor[2] == defaultSpecularColorFactor[2];
+    if (specular.specularFactor == 0.0f && colorFactorIsZero) {
+        return false;
+    } else if (specular.specularFactor == 0.0f) {
+        specular.specularFactor = 1.0f;
+    } else if (colorFactorIsZero) {
+        specular.specularColorFactor[0] = specular.specularColorFactor[1] = specular.specularColorFactor[2] = 1.0f;
+    }
+    GetMatTex(mat, specular.specularColorTexture, aiTextureType_SPECULAR);
+    GetMatTex(mat, specular.specularTexture, aiTextureType_SPECULAR);
+    return true;
+}
+
 bool glTF2Exporter::GetMatSheen(const aiMaterial &mat, glTF2::MaterialSheen &sheen) {
     // Return true if got any valid Sheen properties or textures
     if (GetMatColor(mat, sheen.sheenColorFactor, AI_MATKEY_SHEEN_COLOR_FACTOR) != aiReturn_SUCCESS) {
@@ -818,9 +836,9 @@ void glTF2Exporter::ExportMaterials() {
             m->alphaMode = alphaMode.C_Str();
         }
 
-        {
+        // This extension has been deprecated, only export with the specific flag enabled, defaults to false. Uses KHR_material_specular default.
+        if (mProperties->GetPropertyBool(AI_CONFIG_USE_GLTF_PBR_SPECULAR_GLOSSINESS)) {
             // KHR_materials_pbrSpecularGlossiness extension
-            // NOTE: This extension is being considered for deprecation (Dec 2020)
             PbrSpecularGlossiness pbrSG;
             if (GetMatSpecGloss(mat, pbrSG)) {
                 mAsset->extensionsUsed.KHR_materials_pbrSpecularGlossiness = true;
@@ -837,7 +855,12 @@ void glTF2Exporter::ExportMaterials() {
         } else {
             // These extensions are not compatible with KHR_materials_unlit or KHR_materials_pbrSpecularGlossiness
             if (!m->pbrSpecularGlossiness.isPresent) {
-                // Sheen
+                MaterialSpecular specular;
+                if (GetMatSpecular(mat, specular)) {
+                    mAsset->extensionsUsed.KHR_materials_specular = true;
+                    m->materialSpecular = Nullable<MaterialSpecular>(specular);
+                }
+
                 MaterialSheen sheen;
                 if (GetMatSheen(mat, sheen)) {
                     mAsset->extensionsUsed.KHR_materials_sheen = true;

code/AssetLib/glTF2/glTF2Exporter.h

@@ -76,6 +76,7 @@ struct OcclusionTextureInfo;
 struct Node;
 struct Texture;
 struct PbrSpecularGlossiness;
+struct MaterialSpecular;
 struct MaterialSheen;
 struct MaterialClearcoat;
 struct MaterialTransmission;
@@ -117,6 +118,7 @@ protected:
     aiReturn GetMatColor(const aiMaterial &mat, glTF2::vec4 &prop, const char *propName, int type, int idx) const;
     aiReturn GetMatColor(const aiMaterial &mat, glTF2::vec3 &prop, const char *propName, int type, int idx) const;
     bool GetMatSpecGloss(const aiMaterial &mat, glTF2::PbrSpecularGlossiness &pbrSG);
+    bool GetMatSpecular(const aiMaterial &mat, glTF2::MaterialSpecular &specular);
     bool GetMatSheen(const aiMaterial &mat, glTF2::MaterialSheen &sheen);
     bool GetMatClearcoat(const aiMaterial &mat, glTF2::MaterialClearcoat &clearcoat);
     bool GetMatTransmission(const aiMaterial &mat, glTF2::MaterialTransmission &transmission);

code/AssetLib/glTF2/glTF2Importer.cpp

@@ -278,8 +278,19 @@ static aiMaterial *ImportMaterial(std::vector<int> &embeddedTexIdxs, Asset &r, M
         aimat->AddProperty(&alphaMode, AI_MATKEY_GLTF_ALPHAMODE);
         aimat->AddProperty(&mat.alphaCutoff, 1, AI_MATKEY_GLTF_ALPHACUTOFF);
 
+        // KHR_materials_specular
+        if (mat.materialSpecular.isPresent) {
+            MaterialSpecular &specular = mat.materialSpecular.value;
+            // Default values of zero disables Specular
+            if (std::memcmp(specular.specularColorFactor, defaultSpecularColorFactor, sizeof(glTFCommon::vec3)) != 0 || specular.specularFactor != 0.0f) {
+                SetMaterialColorProperty(r, specular.specularColorFactor, aimat, AI_MATKEY_COLOR_SPECULAR);
+                aimat->AddProperty(&specular.specularFactor, 1, AI_MATKEY_SPECULAR_FACTOR);
+                SetMaterialTextureProperty(embeddedTexIdxs, r, specular.specularTexture, aimat, aiTextureType_SPECULAR);
+                SetMaterialTextureProperty(embeddedTexIdxs, r, specular.specularColorTexture, aimat, aiTextureType_SPECULAR);
+            }
+        }
         // pbrSpecularGlossiness
-        if (mat.pbrSpecularGlossiness.isPresent) {
+        else if (mat.pbrSpecularGlossiness.isPresent) {
             PbrSpecularGlossiness &pbrSG = mat.pbrSpecularGlossiness.value;
 
             SetMaterialColorProperty(r, pbrSG.diffuseFactor, aimat, AI_MATKEY_COLOR_DIFFUSE);

code/CMakeLists.txt

@@ -194,6 +194,8 @@ SET( Common_SRCS
   Common/ScenePreprocessor.cpp
   Common/ScenePreprocessor.h
   Common/SkeletonMeshBuilder.cpp
+  Common/StackAllocator.h
+  Common/StackAllocator.inl
   Common/StandardShapes.cpp
   Common/TargetAnimation.cpp
   Common/TargetAnimation.h

code/Common/SceneCombiner.cpp

@@ -1349,6 +1349,9 @@ void SceneCombiner::Copy(aiMetadata **_dest, const aiMetadata *src) {
         case AI_AIVECTOR3D:
             out.mData = new aiVector3D(*static_cast<aiVector3D *>(in.mData));
             break;
+        case AI_AIMETADATA:
+            out.mData = new aiMetadata(*static_cast<aiMetadata *>(in.mData));
+            break;
         default:
             ai_assert(false);
             break;

code/Common/StackAllocator.h

@@ -0,0 +1,92 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+----------------------------------------------------------------------
+*/
+
+/** @file  StackAllocator.h
+ *  @brief A very bare-bone allocator class that is suitable when
+ *      allocating many small objects, e.g. during parsing.
+ *      Individual objects are not freed, instead only the whole memory
+ *      can be deallocated.
+ */
+#ifndef AI_STACK_ALLOCATOR_H_INC
+#define AI_STACK_ALLOCATOR_H_INC
+
+#include <vector>
+#include <stdint.h>
+#include <stddef.h>
+
+namespace Assimp {
+
+/** @brief A very bare-bone allocator class that is suitable when
+ *      allocating many small objects, e.g. during parsing.
+ *      Individual objects are not freed, instead only the whole memory
+ *      can be deallocated.
+*/
+class StackAllocator {
+public:
+    /// @brief Constructs the allocator
+    inline StackAllocator();
+    /// @brief Destructs the allocator and frees all memory
+    inline ~StackAllocator();
+
+    // non copyable
+    StackAllocator(const StackAllocator &) = delete;
+    StackAllocator &operator=(const StackAllocator &) = delete;
+
+    /// @brief Returns a pointer to byteSize bytes of heap memory that persists
+    ///        for the lifetime of the allocator (or until FreeAll is called).
+    inline void *Allocate(size_t byteSize);
+
+    /// @brief Releases all the memory owned by this allocator.
+    //         Memory provided through function Allocate is not valid anymore after this function has been called.
+    inline void FreeAll();
+
+private:
+    constexpr const static size_t g_maxBytesPerBlock = 64 * 1024 * 1024; // The maximum size (in bytes) of a block
+    constexpr const static size_t g_startBytesPerBlock = 16 * 1024;  // Size of the first block. Next blocks will double in size until maximum size of g_maxBytesPerBlock
+    size_t m_blockAllocationSize = g_startBytesPerBlock; // Block size of the current block
+    size_t m_subIndex = g_maxBytesPerBlock; // The current byte offset in the current block
+    std::vector<uint8_t *> m_storageBlocks;  // A list of blocks
+};
+
+} // namespace Assimp
+
+#include "StackAllocator.inl"
+
+#endif // include guard

code/Common/StackAllocator.inl

@@ -0,0 +1,82 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#include "StackAllocator.h"
+#include <assimp/ai_assert.h>
+
+using namespace Assimp;
+
+inline StackAllocator::StackAllocator() {
+}
+
+inline StackAllocator::~StackAllocator() {
+    FreeAll();
+}
+
+inline void *StackAllocator::Allocate(size_t byteSize) {
+    if (m_subIndex + byteSize > m_blockAllocationSize) // start a new block
+    {
+        // double block size every time, up to maximum of g_maxBytesPerBlock.
+        // Block size must be at least as large as byteSize, but we want to use this for small allocations anyway.
+        m_blockAllocationSize = std::max(std::min(m_blockAllocationSize * 2, g_maxBytesPerBlock), byteSize);
+        uint8_t *data = new uint8_t[m_blockAllocationSize];
+        m_storageBlocks.emplace_back(data);
+        m_subIndex = byteSize;
+        return data;
+    }
+
+    uint8_t *data = m_storageBlocks.back();
+    data += m_subIndex;
+    m_subIndex += byteSize;
+
+    return data;
+}
+
+inline void StackAllocator::FreeAll() {
+    for (size_t i = 0; i < m_storageBlocks.size(); i++) {
+        delete [] m_storageBlocks[i];
+    }
+    std::vector<uint8_t *> empty;
+    m_storageBlocks.swap(empty);
+    // start over:
+    m_blockAllocationSize = g_startBytesPerBlock;
+    m_subIndex = g_maxBytesPerBlock;
+}

fuzz/assimp_fuzzer.cc

@@ -40,6 +40,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 #include <assimp/cimport.h>
 #include <assimp/Importer.hpp>
+#include <assimp/Exporter.hpp>
 #include <assimp/scene.h>
 #include <assimp/postprocess.h>
 
@@ -53,6 +54,13 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize) {
     const aiScene *sc = importer.ReadFileFromMemory(data, dataSize,
         aiProcessPreset_TargetRealtime_Quality, nullptr );
 
+    if (sc == nullptr) {
+        return 0;
+    }
+
+    Exporter exporter;
+    exporter.ExportToBlob(sc, "fbx");
+    
     aiDetachLogStream(&stream);
 
     return 0;

include/assimp/config.h.in

@@ -1065,6 +1065,17 @@ enum aiComponent
  */
 #define AI_CONFIG_EXPORT_POINT_CLOUDS "EXPORT_POINT_CLOUDS"
 
+/** @brief Specifies whether to use the deprecated KHR_materials_pbrSpecularGlossiness extension
+ * 
+ * When this flag is undefined any material with specularity will use the new KHR_materials_specular
+ * extension. Enabling this flag will revert to the deprecated extension. Note that exporting
+ * KHR_materials_pbrSpecularGlossiness with extensions other than KHR_materials_unlit is unsupported,
+ * including the basic pbrMetallicRoughness spec.
+ *
+ * Property type: Bool. Default value: false.
+ */
+#define AI_CONFIG_USE_GLTF_PBR_SPECULAR_GLOSSINESS "USE_GLTF_PBR_SPECULAR_GLOSSINESS"
+
 /**
  * @brief Specifies the blob name, assimp uses for exporting.
  * 

test/unit/utExport.cpp

@@ -1,38 +1,71 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
 #include "UnitTestPCH.h"
-
 #include <assimp/cexport.h>
 #include <assimp/Exporter.hpp>
 
-
 #ifndef ASSIMP_BUILD_NO_EXPORT
 
 class ExporterTest : public ::testing::Test {
 public:
-
-    virtual void SetUp()
-    {
+    void SetUp() override {
         ex = new Assimp::Exporter();
         im = new Assimp::Importer();
 
         pTest = im->ReadFile(ASSIMP_TEST_MODELS_DIR "/X/test.x", aiProcess_ValidateDataStructure);
     }
 
-    virtual void TearDown()
-    {
+    void TearDown() override {
         delete ex;
         delete im;
     }
 
 protected:
-
     const aiScene* pTest;
     Assimp::Exporter* ex;
     Assimp::Importer* im;
 };
 
 // ------------------------------------------------------------------------------------------------
-TEST_F(ExporterTest, testExportToFile)
-{
+TEST_F(ExporterTest, testExportToFile) {
     const char* file = "unittest_output.dae";
     EXPECT_EQ(AI_SUCCESS,ex->Export(pTest,"collada",file));
 
@@ -41,8 +74,7 @@ TEST_F(ExporterTest, testExportToFile)
 }
 
 // ------------------------------------------------------------------------------------------------
-TEST_F(ExporterTest, testExportToBlob)
-{
+TEST_F(ExporterTest, testExportToBlob) {
     const aiExportDataBlob* blob = ex->ExportToBlob(pTest,"collada");
     ASSERT_TRUE(blob);
     EXPECT_TRUE(blob->data);
@@ -56,8 +88,7 @@ TEST_F(ExporterTest, testExportToBlob)
 }
 
 // ------------------------------------------------------------------------------------------------
-TEST_F(ExporterTest, testCppExportInterface)
-{
+TEST_F(ExporterTest, testCppExportInterface) {
     EXPECT_TRUE(ex->GetExportFormatCount() > 0);
     for(size_t i = 0; i < ex->GetExportFormatCount(); ++i) {
         const aiExportFormatDesc* const desc = ex->GetExportFormatDescription(i);
@@ -71,14 +102,13 @@ TEST_F(ExporterTest, testCppExportInterface)
 }
 
 // ------------------------------------------------------------------------------------------------
-TEST_F(ExporterTest, testCExportInterface)
-{
+TEST_F(ExporterTest, testCExportInterface) {
     EXPECT_TRUE(aiGetExportFormatCount() > 0);
     for(size_t i = 0; i < aiGetExportFormatCount(); ++i) {
         const aiExportFormatDesc* const desc = aiGetExportFormatDescription(i);
         EXPECT_TRUE(desc);
-        // rest has already been validated by testCppExportInterface
     }
 }
 
 #endif
+

test/unit/utglTF2ImportExport.cpp

@@ -219,8 +219,14 @@ TEST_F(utglTF2ImportExport, importglTF2AndExport_KHR_materials_pbrSpecularGlossi
     const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/glTF2/BoxTextured-glTF-pbrSpecularGlossiness/BoxTextured.gltf",
             aiProcess_ValidateDataStructure);
     EXPECT_NE(nullptr, scene);
-    // Export
+    
+    // Export with specular glossiness disabled
     EXPECT_EQ(aiReturn_SUCCESS, exporter.Export(scene, "glb2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxTextured-glTF-pbrSpecularGlossiness/BoxTextured_out.glb"));
+    
+    // Export with specular glossiness enabled
+    ExportProperties props;
+    props.SetPropertyBool(AI_CONFIG_USE_GLTF_PBR_SPECULAR_GLOSSINESS, true);
+    EXPECT_EQ(aiReturn_SUCCESS, exporter.Export(scene, "glb2", ASSIMP_TEST_MODELS_DIR "/glTF2/BoxTextured-glTF-pbrSpecularGlossiness/BoxTextured_out.glb", 0, &props));
 
     // And re-import
     EXPECT_TRUE(importerMatTest(ASSIMP_TEST_MODELS_DIR "/glTF2/BoxTextured-glTF-pbrSpecularGlossiness/BoxTextured_out.glb", true));