added specular, ambient light,...

need to fix the texutre gamma correction,
look at the todos

QtMeshViewer/Source/MshFile.cpp

@@ -217,6 +217,7 @@ void MshFile::analyseMatdChunks(std::list<ChunkHeader*>& chunkList)
 {
 	for (auto& it : chunkList)
 	{
+		// TODO: don't load default texture, make it NULL
 		//TODO: get information from flags
 		// attributes
 		if (!strcmp("ATRB", it->name))