draw all models from vector,

window cosmetic,
next:
texture,
calculate modelmatrix from parent

QtMeshViewer/Header/GeometryEngine.h

@@ -6,6 +6,13 @@
 #include <QOpenGLTexture>
 #include <QVector>
 
+struct DrawInformation {
+	unsigned int offset;
+	unsigned int size;
+	unsigned int textureIndex;
+	QMatrix4x4 modelMatrix;
+};
+
 class GeometryEngine : protected QOpenGLFunctions
 {
 public:
@@ -16,9 +23,7 @@ private:
 	QOpenGLBuffer m_arrayBuf;
 	QOpenGLBuffer m_indexBuf;
 	QVector<QOpenGLTexture*> m_textures;
-
-	QVector<Model*>* m_models = Q_NULLPTR;
-	QVector<std::string>* m_textureNames = Q_NULLPTR;	//TODO: remove, use it local and only hold the textures itself
+	QVector<DrawInformation> m_drawList;
 
 	void initCubeGeometry();
 	void initTexture();

QtMeshViewer/Resources/Resources.qrc

@@ -5,5 +5,6 @@
     </qresource>
     <qresource prefix="/images">
         <file>cube.png</file>
+        <file>icon.ico</file>
     </qresource>
 </RCC>

QtMeshViewer/Resources/fshader.glsl

@@ -10,6 +10,6 @@ varying vec2 v_texcoord;
 
 void main()
 {
-    // Set fragment color from texture
-    gl_FragColor = texture2D(texture, v_texcoord);
+	// Set fragment color from texture
+	gl_FragColor = texture2D(texture, v_texcoord);
 }

QtMeshViewer/Resources/vshader.glsl

@@ -4,7 +4,8 @@ precision mediump int;
 precision mediump float;
 #endif
 
-uniform mat4 mvp_matrix;
+uniform mat4 vp_matrix;
+uniform mat4 m_matrix;
 
 attribute vec4 a_position;
 attribute vec2 a_texcoord;
@@ -13,10 +14,10 @@ varying vec2 v_texcoord;
 
 void main()
 {
-    // Calculate vertex position in screen space
-    gl_Position = mvp_matrix * a_position;
+	// Calculate vertex position in screen space
+	gl_Position = vp_matrix * m_matrix * a_position;
 
-    // Pass texture coordinate to fragment shader
-    // Value will be automatically interpolated to fragments inside polygon faces
-    v_texcoord = a_texcoord;
+	// Pass texture coordinate to fragment shader
+	// Value will be automatically interpolated to fragments inside polygon faces
+	v_texcoord = a_texcoord;
 }

QtMeshViewer/Source/GeometryEngine.cpp

@@ -35,11 +35,14 @@ GeometryEngine::~GeometryEngine()
 
 void GeometryEngine::initCubeGeometry()
 {
+	QVector<Model*>* models;
+	QVector<VertexData> vertexData;
+	QVector<GLuint> indexData;
 
 	try
 	{
-		MshFile file("..\\Release\\Msh\\cubeTex.msh");
-		m_models = file.getModels();
+		MshFile file("..\\Release\\Msh\\sphere.msh");
+		 models = file.getModels();
 		//TODO use models local, apply MVP directly to the vertex, save size and tex index info
 
 		//TODO: handle the textures
@@ -50,13 +53,40 @@ void GeometryEngine::initCubeGeometry()
 		auto msg = e.what();
 	}
 
+	// collect data
+	unsigned int offsetCount(0);
+	for (auto& modelIterator : *models)
+	{
+		for (auto& segmentIterator : modelIterator->segmList)
+		{
+			// get draw information
+			DrawInformation new_info;
+			new_info.offset = offsetCount;
+			new_info.size = segmentIterator->indices.size();
+			new_info.textureIndex = segmentIterator->textureIndex;
+			new_info.modelMatrix = modelIterator->m4x4Translation;
+
+			// add offset to indices
+			for (auto& it : segmentIterator->indices)
+				it += new_info.offset;
+
+			// save data
+			vertexData += segmentIterator->vertices;
+			indexData += segmentIterator->indices;
+			m_drawList.push_back(new_info);
+
+			// update offset
+			offsetCount += new_info.size;
+		}
+	}
+
 	// Transfer vertex data to VBO 0
 	m_arrayBuf.bind();
-	m_arrayBuf.allocate(m_models->first()->segmList.front()->vertices.data(), m_models->first()->segmList.front()->vertices.size() * sizeof(VertexData));
+	m_arrayBuf.allocate(vertexData.data(),vertexData.size() * sizeof(VertexData));
 
 	// Transfer index data to VBO 1
 	m_indexBuf.bind();
-	m_indexBuf.allocate(m_models->first()->segmList.front()->indices.data(), m_models->first()->segmList.front()->indices.size() * sizeof(GLuint));
+	m_indexBuf.allocate(indexData.data(), indexData.size() * sizeof(GLuint));
 
 	// load the texture
 	initTexture();
@@ -86,12 +116,12 @@ void GeometryEngine::initTexture()
 
 void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
 {
+// Setup
 	// Tell OpenGL which VBOs to use
 	m_arrayBuf.bind();
 	m_indexBuf.bind();
-	m_textures.first()->bind();
 
-	// Use texture unit 0 which contains cube.png
+	// Allways use texture unit 0
 	program->setUniformValue("texture", 0);
 
 	// Offset for position
@@ -110,6 +140,20 @@ void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
 	program->enableAttributeArray(texcoordLocation);
 	program->setAttributeBuffer(texcoordLocation, GL_FLOAT, offset, 2, sizeof(VertexData));
 
-	// Draw cube geometry using indices from VBO 1
-	glDrawElements(GL_TRIANGLES, 36, GL_UNSIGNED_INT, 0);
+// Paint
+
+	for (auto& it : m_drawList)
+	{
+		// bind the correct texture
+		if (it.textureIndex < m_textures.size())
+			m_textures.last()->bind();
+		else
+			m_textures.at(it.textureIndex)->bind();
+
+		// Set model matrix
+		program->setUniformValue("m_matrix", it.modelMatrix);
+
+		// Draw cube geometry using indices from VBO 1
+		glDrawElements(GL_TRIANGLES, it.size, GL_UNSIGNED_INT, (void*)(it.offset * sizeof(GLuint)));
+	}
 }

QtMeshViewer/Source/MainWindow.cpp

@@ -12,9 +12,11 @@ MainWindow::MainWindow(QWidget *parent)
 	format.setDepthBufferSize(24);
 	QSurfaceFormat::setDefaultFormat(format);
 
-	this->setCentralWidget(new OglViewerWidget(this));
+	setCentralWidget(new OglViewerWidget(this));
 
-	ui->statusBar->showMessage("haha vbgf");
+	setWindowIcon(QIcon(":/images/icon.ico"));
+	setWindowTitle("Mesh Viewer");
+	ui->statusBar->showMessage("pre-alpha");
 }
 
 

QtMeshViewer/Source/OglViewerWidget.cpp

@@ -142,8 +142,8 @@ void OglViewerWidget::paintGL()
 	view.translate(m_translation);
 	view.rotate(m_rotation);
 
-	// Set modelview-projection matrix
-	m_program.setUniformValue("mvp_matrix", m_projection * view);
+	// Set view-projection matrix
+	m_program.setUniformValue("vp_matrix", m_projection * view);
 
 	// Draw cube geometry
 	m_dataEngine->drawGeometry(&m_program);