support transparency now

QtMeshViewer/Resources/fshader.glsl

@@ -6,6 +6,8 @@ precision mediump float;
 
 uniform sampler2D texture;
 
+uniform bool b_transparent;
+
 varying vec2 v_texcoord;
 
 void main()
@@ -13,5 +15,10 @@ void main()
 	// Set fragment color from texture
 	vec4 finalColor = vec4(texture2D(texture, v_texcoord));
 
+	if(!b_transparent)
+	{
+		finalColor.a = 1.0f;
+	}
+
 	gl_FragColor = finalColor;
 }

QtMeshViewer/Source/GeometryEngine.cpp

@@ -71,7 +71,6 @@ void GeometryEngine::loadFile(QString filePath)
 		m_boundings = file.getBoundingBox();
 
 		// collect data
-		//TODO: sort transparent faces
 		unsigned int indexOffset(0);
 		unsigned int vertexOffset(0);
 		for (auto& modelIterator : *models)
@@ -94,7 +93,11 @@ void GeometryEngine::loadFile(QString filePath)
 				// save data
 				vertexData += segmentIterator->vertices;
 				indexData += segmentIterator->indices;
+
+				if (segmentIterator->textureIndex < m_materials->size() && m_materials->at(segmentIterator->textureIndex).transparent)
 					m_drawList.push_back(new_info);
+				else
+					m_drawList.push_front(new_info);
 
 				// update offset
 				indexOffset += new_info.size;
@@ -172,15 +175,25 @@ void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
 
 	for (auto& it : m_drawList)
 	{
+		bool tmp_transparent(false);
+
 		// bind the correct texture
 		if (it.textureIndex < m_materials->size())
+		{
 			m_materials->at(it.textureIndex).texture->bind();
+			tmp_transparent = m_materials->at(it.textureIndex).transparent;
+		}
 		else
+		{
 			m_materials->last().texture->bind();
-
+			tmp_transparent = m_materials->last().transparent;
+		}
 		// Set model matrix
 		program->setUniformValue("m_matrix", it.modelMatrix);
 
+		// decide if this is transparent
+		program->setUniformValue("b_transparent", tmp_transparent);
+
 		// Draw cube geometry using indices from VBO 1
 		glDrawElements(GL_TRIANGLES, it.size, GL_UNSIGNED_INT, (void*)(it.offset * sizeof(GLuint)));
 	}

QtMeshViewer/Source/MshFile.cpp

@@ -160,6 +160,7 @@ void MshFile::analyseMsh2Chunks(std::list<ChunkHeader*>& chunkList)
 					std::list<ChunkHeader*> tmp_matdChunks;
 					loadChunks(tmp_matdChunks, it->position, it->size);
 
+					//TODO: materialy without texture have null pointer need to fix that
 					m_materials->push_back(Material());
 
 					// analyse MATD subchunks
@@ -216,7 +217,67 @@ void MshFile::analyseMatdChunks(std::list<ChunkHeader*>& chunkList)
 {
 	for (auto& it : chunkList)
 	{
-		if (!strcmp("TX0D", it->name))
+		//TODO: get information from flags
+		// attributes
+		if (!strcmp("ATRB", it->name))
+		{
+			// read the attributes
+			m_file.seekg(it->position);
+			std::uint8_t flag, render, data[2];
+			m_file.read(F2V(flag), sizeof(flag));
+			m_file.read(F2V(render), sizeof(render));
+			m_file.read(F2V(data[0]), sizeof(data[0]));
+			m_file.read(F2V(data[1]), sizeof(data[1]));
+
+			// specular
+			if (flag >> 7)
+			{
+				std::cout << "specular" << std::endl;
+			}
+			// additive transparency
+			if ((flag << 1) >> 7)
+			{
+				std::cout << "additive transparency" << std::endl;
+				m_materials->back().transparent = true;
+			}
+			// per-pixel lighting
+			if ((flag << 2) >> 7)
+			{
+				std::cout << "per-pixel lighting" << std::endl;
+			}
+			// hard-edged transparency
+			if ((flag << 3) >> 7)
+			{
+				std::cout << "hard-edged transparency" << std::endl;
+				m_materials->back().transparent = true;
+			}
+			// double-sided transparency
+			if ((flag << 4) >> 7)
+			{
+				std::cout << "double-sided transparency" << std::endl;
+				m_materials->back().transparent = true;
+			}
+			// single-sided transparency
+			if ((flag << 5) >> 7)
+			{
+				std::cout << "single-sided transparency" << std::endl;
+				m_materials->back().transparent = true;
+			}
+			// glow
+			if ((flag << 6) >> 7)
+			{
+				std::cout << "glow" << std::endl;
+			}
+			// emissive
+			if ((flag << 7) >> 7)
+			{
+				std::cout << "emissive" << std::endl;
+			}
+
+		}
+
+		// texture name
+		else if (!strcmp("TX0D", it->name))
 		{
 			// get the texture name
 			m_file.seekg(it->position);
@@ -536,7 +597,6 @@ void MshFile::analyseClthChunks(Model * dataDestination, std::list<ChunkHeader*>
 				m_materials->push_back(Material());
 				m_materials->back().name = QString(buffer);
 
-				//TODO: load texture;
 				loadTexture(m_materials->back().texture, m_filepath + "/" + m_materials->back().name);
 				new_segment->textureIndex = m_materials->size() - 1;
 			}