copied from the old Ppoject:

shaders,
object class
Modified to use better names and use Qt things

MeshViewerQt/Header/MshFile.h

+#pragma once
+#include <fstream>
+#include <vector>
+#include <QMatrix4x4>
+
+enum ModelTyp {
+	null,
+	dynamicMesh,
+	cloth,
+	bone,
+	staticMesh,
+	shadowMesh = 6
+};
+
+struct BoundingBox {
+	float quaternion[4];
+	float center[3];
+	float extents[3];
+};
+
+struct ChunkHeader {
+	char name[5];
+	std::uint32_t size;
+	std::streampos position;
+};
+
+struct Segment {
+	std::uint32_t textureIndex	= 0;
+	float* vertex				= nullptr;
+	float* uv					= nullptr;
+	std::vector<std::vector<std::uint32_t>> polyIndices;	// indices into vertex array
+};
+
+struct Model {
+	std::string name			= "";
+	std::string parent			= "";
+	ModelTyp type				= null;
+	std::int32_t renderFlags	= -1;
+	QMatrix4x4 m4x4Translation;
+	std::vector<Segment*> segmList;
+};
+
+
+class MshFile
+{
+public:
+	MshFile(const char* path);
+	~MshFile();
+
+private:
+	std::vector<Model*>* m_vModels;
+	std::fstream m_fsMesh;
+	std::vector<std::string> m_vTextureNames;
+	BoundingBox m_sceneBbox;
+
+private:
+	void loadChunks(std::list<ChunkHeader*> &destination, std::streampos start, const std::uint32_t length);
+
+	void analyseMsh2Chunks(std::list<ChunkHeader*> &chunkList);
+
+	void analyseMatdChunks(std::list<ChunkHeader*> &chunkList);
+
+	void analyseModlChunks(Model* dataDestination, std::list<ChunkHeader*> &chunkList);
+	void analyseGeomChunks(Model* dataDestination, std::list<ChunkHeader*> &chunkList);
+	void analyseSegmChunks(Model* dataDestination, std::list<ChunkHeader*> &chunkList);
+	void analyseClthChunks(Model* dataDestination, std::list<ChunkHeader*> &chunkList);
+
+	void readVertex(Segment* dataDestination, std::streampos position);
+	void readUV(Segment* dataDestination, std::streampos position);
+
+public:
+	std::vector<Model*>* getModels() const;
+	std::vector<std::string> getTextureNames() const;
+	BoundingBox getBoundingBox() const;
+};
\ No newline at end of file

MeshViewerQt/Header/OpenGlViewer.h

 #pragma once
-
 #include <QOpenGLWidget>
 #include <QOpenGLFunctions>
 #include <QOpenGLBuffer>
 #include <QOPenGLVertexArrayObject>
 #include <QOpenGlShaderProgram>
+#include "..\Header\MshFile.h"
+
+struct Vertex {
+	GLfloat position[3];
+	GLfloat uv[2];
+};
+
+struct textureData {
+	bool alpha;
+	std::uint32_t width;
+	std::uint32_t height;
+	std::vector<std::uint8_t>* data;
+};
 
 class OpenGlViewer : public QOpenGLWidget, protected QOpenGLFunctions
 {
@@ -15,17 +27,37 @@ public:
 	~OpenGlViewer();
 
 private:
-	QOpenGLBuffer mVertexBuffer;
-	QOpenGLVertexArrayObject mVertexArray;
-	QOpenGLShaderProgram* mProgram = nullptr;
+// OpenGL ======================================
+	QOpenGLBuffer m_vertexBuffer;
+	QOpenGLVertexArrayObject m_vertexArray;
+	QOpenGLShaderProgram* m_program = nullptr;
 
-private:
-	void printContextInformation();
+// Data ========================================
+	std::vector<Model*>* m_vModels = nullptr;
+	std::vector<textureData*> m_vTextures;
+	BoundingBox m_sceneBoundings;
+
+// Transformation ==============================
+	float m_fRotX		= 0;
+	float m_fRotY		= 0;
+	float m_fRotZ		= 0;
+	float m_fTranX		= 0;
+	float m_fTranY		= 0;
+	float m_fTranZ		= 0;
+
+// Camera ======================================
+	float m_fFOV		= 45.0f;
+	float m_fMinView	= 0.1f;
+	float m_fMaxView	= 100.0f;
 
-protected:
+private:
 	virtual void initializeGL() override final;
 	virtual void resizeGL(int w, int h) override final;
 	virtual void paintGL() override final;
 
+	void printContextInformation();
+	void deleteData();
+
 public:
+	void setData(std::vector<Model*>* models, std::vector<textureData*> textures);
 };

MeshViewerQt/Header/Vertex.h

-#ifndef VERTEX_H
-#define VERTEX_H
+#pragma once
 
 #include <QVector3D>
 
@@ -51,5 +50,3 @@ void inline Vertex::setColor(const QVector3D& color) { m_color = color; }
 Q_DECL_CONSTEXPR inline int Vertex::positionOffset() { return offsetof(Vertex, m_position); }
 Q_DECL_CONSTEXPR inline int Vertex::colorOffset() { return offsetof(Vertex, m_color); }
 Q_DECL_CONSTEXPR inline int Vertex::stride() { return sizeof(Vertex); }
-
-#endif // VERTEX_H
\ No newline at end of file

MeshViewerQt/Header/defines.h

@@ -5,6 +5,4 @@
 #define WINDOW_HEIGHT				480
 
 #define DEFAULT_STATUS_MESSAGE		"Mesh Viewer pre alpha by Anakin"
-#define DEFAULT_MAJOR_VERSION		4
-#define DEFAULT_MINOR_VERSION		5
-#define DEAFAULT_BACKGROUND			0.5000f, 0.8000f, 1.0000f, 0.0000f
+

MeshViewerQt/Resources/MainWindow.qrc

@@ -5,5 +5,7 @@
     <qresource prefix="/shaders">
         <file>simple.frag</file>
         <file>simple.vert</file>
+        <file>TextureShader.frag</file>
+        <file>TextureShader.vert</file>
     </qresource>
 </RCC>

MeshViewerQt/Resources/TextureShader.frag

+#version 450
+
+// Input
+in vec2 UV;
+
+// Output
+out vec4 color;
+
+void main()
+{
+	color = texture(textureSampler, UV).rgb;
+}
\ No newline at end of file

MeshViewerQt/Resources/TextureShader.vert

+#version 450
+
+// Input vertex data, different for all executions of this shader
+layout(location = 0) in vec3 vertexPosition;
+layout(location = 1) in vec3 vertexUV;
+
+// Input that stay constant fpr the whole mesh
+uniform mat4 MVP;
+
+// Output
+out vec2 UV;
+
+void main()
+{
+	gl_Position = MVP * vec4(vertexPosition, 1);
+	UV = vertexUV;
+}
\ No newline at end of file

MeshViewerQt/Source/MainWindow.cpp

-#include "MainWindow.h"
-#include "OpenGlViewer.h"
-#include "defines.h"
+#include "..\Header\MainWindow.h"
+#include "..\Header\OpenGlViewer.h"
+#include "..\Header\defines.h"
 #include <QKeyEvent>
 #include <QMessageBox>
 

MeshViewerQt/Source/MshFile.cpp

+#include "..\Header\MshFile.h"
+#include <iostream>
+
+
+// helper function to save data from file to any variable type
+#define F2V(variableName) reinterpret_cast<char*>(&variableName)
+
+
+/////////////////////////////////////////////////////////////////////////
+// public constructor/destructor
+
+MshFile::MshFile(const char * path)
+	: m_vModels(new std::vector<Model*>)
+{
+	//open file
+	m_fsMesh.open(path, std::ios::in | std::ios::binary);
+
+	if (!m_fsMesh.is_open())
+		throw std::invalid_argument(std::string("file not found: ") += path);
+
+	// go to file size information
+	m_fsMesh.seekg(4);
+
+	std::uint32_t tmp_fileSize;
+	std::list<ChunkHeader*> tmp_mainChunks;
+
+	// get all chunks under HEDR
+	m_fsMesh.read(F2V(tmp_fileSize), sizeof(tmp_fileSize));
+	loadChunks(tmp_mainChunks, m_fsMesh.tellg(), tmp_fileSize);
+
+	// evaulate HEDR subchunks (= find MSH2)
+	for (ChunkHeader* it : tmp_mainChunks)
+	{
+		if (!strcmp("MSH2", it->name))
+		{
+			// get all subchunks
+			std::list<ChunkHeader*> tmp_msh2Chunks;
+			loadChunks(tmp_msh2Chunks, it->position, it->size);
+
+			// evaluate MSH2 subchunks
+			analyseMsh2Chunks(tmp_msh2Chunks);
+
+			// clean up
+			while (!tmp_msh2Chunks.empty())
+			{
+				ChunkHeader* curs = tmp_msh2Chunks.front();
+				tmp_msh2Chunks.pop_front();
+				delete curs;
+			}
+		}
+	}
+
+	// clean up
+	while (!tmp_mainChunks.empty())
+	{
+		ChunkHeader* cur = tmp_mainChunks.front();
+		tmp_mainChunks.pop_front();
+		delete cur;
+	}
+
+	// close file
+	m_fsMesh.close();
+}
+
+MshFile::~MshFile()
+{
+	m_vTextureNames.clear();
+}
+
+
+/////////////////////////////////////////////////////////////////////////
+// private functions
+
+void MshFile::loadChunks(std::list<ChunkHeader*>& destination, std::streampos start, const std::uint32_t length)
+{
+	// jump to first chunk
+	m_fsMesh.seekg(start);
+
+	do
+	{
+		ChunkHeader* tmp_header = new ChunkHeader();
+
+		// get information
+		m_fsMesh.read(F2V(tmp_header->name[0]), sizeof(tmp_header->name) - 1);
+		m_fsMesh.read(F2V(tmp_header->size), sizeof(tmp_header->size));
+		tmp_header->position = m_fsMesh.tellg();
+
+		// store information
+		destination.push_back(tmp_header);
+
+		// jump to next header
+		m_fsMesh.seekg(tmp_header->size, std::ios_base::cur);
+
+		// out of file. Maybe a size information is corrupted
+		if (!m_fsMesh.good())
+		{
+			//TODO: different way for output
+			std::cout << "WARNING: corrupted file. Trying to continue" << std::endl;
+			m_fsMesh.clear();
+			break;
+		}
+
+	} while (m_fsMesh.tellg() - start != length);
+}
+
+void MshFile::analyseMsh2Chunks(std::list<ChunkHeader*>& chunkList)
+{
+	for (auto& it : chunkList)
+	{
+		// scene information
+		if (!strcmp("SINF", it->name))
+		{
+			// get SINF subchunks
+			std::list<ChunkHeader*> tmp_sinfChunks;
+			loadChunks(tmp_sinfChunks, it->position, it->size);
+
+			// evaluate SINF subchunks
+			for (auto& it : tmp_sinfChunks)
+			{
+				if (!strcmp("BBOX", it->name))
+				{
+					m_fsMesh.seekg(it->position);
+
+					// read in the quaternion
+					for (int i = 0; i < 4; i++)
+						m_fsMesh.read(F2V(m_sceneBbox.quaternion[i]), sizeof(float));
+
+					//read in the center
+					for (int i = 0; i < 3; i++)
+						m_fsMesh.read(F2V(m_sceneBbox.center[i]), sizeof(float));
+
+					//read in the extents
+					for (int i = 0; i < 3; i++)
+						m_fsMesh.read(F2V(m_sceneBbox.extents[i]), sizeof(float));
+				}
+			}
+
+			// clean up SINF subchunks
+			for (ChunkHeader* it : tmp_sinfChunks)
+				delete it;
+		}
+
+		// material list
+		else if (!strcmp("MATL", it->name))
+		{
+			// "useless" information how many MATD follow, jump over it
+			m_fsMesh.seekg(it->position);
+			m_fsMesh.seekg(sizeof(std::uint32_t), std::ios_base::cur);
+
+			// get all MATL subchunk
+			std::list<ChunkHeader*> tmp_matlChunks;
+			loadChunks(tmp_matlChunks, m_fsMesh.tellg(), it->size - 4);
+
+			// evaluate MATL subchunks
+			for (auto& it : tmp_matlChunks)
+			{
+				// This shouldn't be anything else than MATD
+				if (!strcmp("MATD", it->name))
+				{
+					// get all subchunks from MATD
+					std::list<ChunkHeader*> tmp_matdChunks;
+					loadChunks(tmp_matdChunks, it->position, it->size);
+
+					m_vTextureNames.push_back("");
+
+					// analyse MATD subchunks
+					analyseMatdChunks(tmp_matdChunks);
+
+					// clean up MATD subchunks
+					while (!tmp_matdChunks.empty())
+					{
+						ChunkHeader* cur = tmp_matdChunks.front();
+						tmp_matdChunks.pop_front();
+						delete cur;
+					}
+				}
+			}
+
+			// clean up MATL subchunks
+			while (!tmp_matlChunks.empty())
+			{
+				ChunkHeader* cur = tmp_matlChunks.front();
+				tmp_matlChunks.pop_front();
+				delete cur;
+			}
+		}
+
+		// model
+		else if (!strcmp("MODL", it->name))
+		{
+			Model* new_model = new Model;
+
+			// get all MODL subchunks
+			std::list<ChunkHeader*> tmp_chunks;
+			loadChunks(tmp_chunks, it->position, it->size);
+
+			// evaluate MODL subchunks
+			analyseModlChunks(new_model, tmp_chunks);
+
+			//clean up MODL subchunks
+			while (!tmp_chunks.empty())
+			{
+				ChunkHeader* cur = tmp_chunks.front();
+				tmp_chunks.pop_front();
+				delete cur;
+			}
+
+			// save Model data
+			m_vModels->push_back(new_model);
+		}
+	}
+}
+
+void MshFile::analyseMatdChunks(std::list<ChunkHeader*>& chunkList)
+{
+	for (auto& it : chunkList)
+	{
+		if (!strcmp("TX0D", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			char* buffer = new char[it->size + 1];
+			*buffer = { 0 };
+			m_fsMesh.read(buffer, it->size);
+			m_vTextureNames.back() = buffer;
+			delete[] buffer;
+		}
+	}
+}
+
+void MshFile::analyseModlChunks(Model * dataDestination, std::list<ChunkHeader*>& chunkList)
+{
+	for (auto& it : chunkList)
+	{
+		// model type
+		if (!strcmp("MTYP", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			std::uint32_t tmp_type;
+			m_fsMesh.read(F2V(tmp_type), sizeof(tmp_type));
+			dataDestination->type = (ModelTyp)tmp_type;
+		}
+
+		// parent name
+		else if (!strcmp("PRNT", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			char* buffer = new char[it->size + 1];
+			*buffer = { 0 };
+			m_fsMesh.read(buffer, it->size);
+			dataDestination->parent = buffer;
+			delete[] buffer;
+		}
+
+		// model name
+		else if (!strcmp("NAME", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			char* buffer = new char[it->size + 1];
+			*buffer = { 0 };
+			m_fsMesh.read(buffer, it->size);
+			dataDestination->name = buffer;
+			delete[] buffer;
+		}
+
+		// render flags
+		else if (!strcmp("FLGS", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			m_fsMesh.read(F2V(dataDestination->renderFlags), sizeof(dataDestination->renderFlags));
+		}
+
+		// translation
+		else if (!strcmp("TRAN", it->name))
+		{
+			float tmp_scale[3];
+			float tmp_rotation[4];
+			float tmp_trans[3];
+
+			m_fsMesh.seekg(it->position);
+
+			// read in the data
+			for (int i = 0; i < 3; i++)
+				m_fsMesh.read(F2V(tmp_scale[i]), sizeof(float));
+
+			for (int i = 0; i < 4; i++)
+				m_fsMesh.read(F2V(tmp_rotation[i]), sizeof(float));
+
+			for (int i = 0; i < 3; i++)
+				m_fsMesh.read(F2V(tmp_trans[i]), sizeof(float));
+
+			// modify the matrix
+			dataDestination->m4x4Translation.scale(tmp_scale[0], tmp_scale[1], tmp_scale[2]);
+			dataDestination->m4x4Translation.rotate(QQuaternion(tmp_rotation[3], tmp_rotation[0], tmp_rotation[1], tmp_rotation[2]));
+			dataDestination->m4x4Translation.translate(tmp_trans[0], tmp_trans[1], tmp_trans[2]);
+
+		}
+
+		// geometry data
+		else if (!strcmp("GEOM", it->name))
+		{
+			// get all GEOM subchunks
+			std::list<ChunkHeader*> tmp_geomChunks;
+			loadChunks(tmp_geomChunks, it->position, it->size);
+
+			// evaluate GEOM subchunks
+			analyseGeomChunks(dataDestination, tmp_geomChunks);
+
+			// clean up GEOM subchunks
+			while (!tmp_geomChunks.empty())
+			{
+				ChunkHeader* cur = tmp_geomChunks.front();
+				tmp_geomChunks.pop_front();
+				delete cur;
+			}
+		}
+	}
+}
+
+void MshFile::analyseGeomChunks(Model * dataDestination, std::list<ChunkHeader*>& chunkList)
+{
+	for (auto& it : chunkList)
+	{
+		// segment
+		if (!strcmp("SEGM", it->name))
+		{
+			// get all SEGM subchunks
+			std::list<ChunkHeader*> tmp_segmChunks;
+			loadChunks(tmp_segmChunks, it->position, it->size);
+
+			// evaluate SEGM subchunks
+			analyseSegmChunks(dataDestination, tmp_segmChunks);
+
+			// clean up SEGM subchunk
+			while (!tmp_segmChunks.empty())
+			{
+				ChunkHeader* cur = tmp_segmChunks.front();
+				tmp_segmChunks.pop_front();
+				delete cur;
+			}
+		}
+
+		// cloth
+		else if (!strcmp("CLTH", it->name))
+		{
+			// get all CLTH subchunks
+			std::list<ChunkHeader*> tmp_clthChunks;
+			loadChunks(tmp_clthChunks, it->position, it->size);
+
+			// evaluate CLTH subchunks
+			analyseClthChunks(dataDestination, tmp_clthChunks);
+
+			// clean up CLTH subchunks
+			while (!tmp_clthChunks.empty())
+			{
+				ChunkHeader* cur = tmp_clthChunks.front();
+				tmp_clthChunks.pop_front();
+				delete cur;
+			}
+		}
+	}
+}
+
+void MshFile::analyseSegmChunks(Model * dataDestination, std::list<ChunkHeader*>& chunkList)
+{
+	Segment* new_segment = new Segment;
+
+	for (auto& it : chunkList)
+	{
+		// material index
+		if (!strcmp("MATI", it->name))
+		{
+			m_fsMesh.seekg(it->position);
+			m_fsMesh.read(F2V(new_segment->textureIndex), sizeof(new_segment->textureIndex));
+		}
+
+		// position list (vertex)
+		else if (!strcmp("POSL", it->name))
+		{
+			readVertex(new_segment, it->position);
+		}
+
+		// normals
+		/*else if (!strcmp("NRML", it->name))
+		{
+		fsMesh.seekg(it->position);
+		std::uint32_t tempSize;
+		fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
+		// List of normals
+		// long int - 4 - number of normal vectores stored in this list
+		// float[3][] - 12 each - UVW vector for each vertex
+		}*/
+
+		// uv
+		else if (!strcmp("UV0L", it->name))
+		{
+			readUV(new_segment, it->position);
+		}
+
+		// polygons (indices into vertex/uv list)
+		else if (!strcmp("STRP", it->name))
+		{