diff --git a/MshViewer/Header/OpenGLController.h b/MshViewer/Header/OpenGLController.h
index 94c0104..fcfce57 100644
--- a/MshViewer/Header/OpenGLController.h
+++ b/MshViewer/Header/OpenGLController.h
@@ -10,7 +10,7 @@
 #define VERTEX_INDEX_UV			1
 
 #define VERTEX_COMPONENTS_XYZ	3
-#define VERTEX_COMPONENTS_UV	4
+#define VERTEX_COMPONENTS_UV	2
 
 #define VERTEX_SIZE_XYZ			(sizeof(float) * VERTEX_COMPONENTS_XYZ)
 #define VERTEX_SIZE_UV			(sizeof(float) * VERTEX_COMPONENTS_UV)
@@ -39,49 +39,49 @@ private:
 // member
 private:
 	// window
-	GLFWwindow* pWindow;
-	std::string sWindowName;
-	int iWidth;
-	int iHeight;
+	GLFWwindow* pWindow			= NULL;
+	std::string sWindowName		= "MeshViewer 2.0 pre-alpha";
+	int iWidth					= 640;
+	int iHeight					= 480;
 
 	// init glfw
-	int iOglMajorVersion;
-	int iOglMinorVersion;
-	int iAntiAliasingLevel;
+	int iOglMajorVersion		= 4;
+	int iOglMinorVersion		= 5;
+	int iAntiAliasingLevel		= 4;
 
-// IDs ==========================
+// IDs ====================================
 	//object data
-	GLuint gluiVertexArrayID;
-	GLuint gluiInstanceBufferID;
-	GLuint gluiVertexBufferID;
+	GLuint gluiVertexArrayID	= 0;
+	GLuint gluiVertexBufferID	= 0;
+	GLuint gluiInstanceBufferID	= 0;
 
 	//obj color
-	GLuint gluiTextureID;
-	GLuint gluiShaderPrgmID;
-	GLuint gluiSamplerID;
+	GLuint gluiTextureID		= 0;
+	GLuint gluiShaderPrgmID		= 0;
+	GLuint gluiSamplerID		= 0;
 
 	//obj transformation
-	GLuint gluiMatrixID;
-// ==============================
+	GLuint gluiMatrixID			= 0;
+// ========================================
 
 	// data
 	std::vector<Modl*> vModels;
 
-// transformation ===============
+// transformation =========================
 	//values
-	float fRotationX;
-	float fRotationY;
-	float fRotationZ;
-	double dTranslationX;
-	double dTranslationY;
-	double dTranslationZ;
+	float fRotationX			= 0;
+	float fRotationY			= 0;
+	float fRotationZ			= 0;
+	double dTranslationX		= 0;
+	double dTranslationY		= 0;
+	double dTranslationZ		= 5;
 
-// ==============================
+// ========================================
 
 	// camera
-	float fFOV;
-	float fMinView;
-	float fMaxView;
+	float fFOV					= 45.0f;
+	float fMinView				= 0.1f;
+	float fMaxView				= 100.0f;
 
 
 ////////////////////////////////////////////////////////////////////////////////////////////
@@ -89,7 +89,6 @@ private:
 private:
 	void processInit();
 
-	void initDefault();
 	void startGLFW();
 	void createWindow();
 	void startGLEW();
diff --git a/MshViewer/Shader/VertexTextureShader.mv2shdr b/MshViewer/Shader/VertexTextureShader.mv2shdr
index f867917..ada5b7e 100644
--- a/MshViewer/Shader/VertexTextureShader.mv2shdr
+++ b/MshViewer/Shader/VertexTextureShader.mv2shdr
@@ -14,7 +14,7 @@ uniform mat4 MVP;
 void main(){
 
 	// Output position of the vertex, in clip space : MVP * position
-	gl_Position =  MVP * vec4(vertexPosition_modelspace,1);
+	gl_Position =  MVP * vec4(vertexPosition_modelspace, 1);
 
 	UV = vertexUV;
 
diff --git a/MshViewer/Source/OpenGlController.cpp b/MshViewer/Source/OpenGlController.cpp
index 5f79077..95185f7 100644
--- a/MshViewer/Source/OpenGlController.cpp
+++ b/MshViewer/Source/OpenGlController.cpp
@@ -50,8 +50,7 @@ OpenGLController::~OpenGLController()
 
 OpenGLController::OpenGLController(int oglMajor, int oglMinor)
 {
-	// init variables
-	initDefault();
+	// adjust ogl version optional
 	iOglMajorVersion = oglMajor;
 	iOglMinorVersion = oglMinor;
 
@@ -62,34 +61,6 @@ OpenGLController::OpenGLController(int oglMajor, int oglMinor)
 /////////////////////////////////////////////////////////////////////////
 // private functions
 
-void OpenGLController::initDefault()
-{
-	pWindow = NULL;
-	sWindowName = "MeshViewer 2.0 pre-alpha";
-	iWidth = 640;
-	iHeight = 480;
-
-	iAntiAliasingLevel = 4;
-
-	gluiInstanceBufferID = 0;
-	gluiTextureID = 0;
-	gluiShaderPrgmID = 0;
-	gluiSamplerID = 0;
-
-	gluiMatrixID = 0;
-
-	fRotationX = 0;
-	fRotationY = 0;
-	fRotationZ = 0;
-	dTranslationX = 0;
-	dTranslationY = 0;
-	dTranslationZ = 5;
-
-	fFOV = 45.0f;
-	fMinView = 0.1f;
-	fMaxView = 100.0f;
-}
-
 void OpenGLController::processInit()
 {
 	startGLFW();
@@ -159,10 +130,10 @@ void OpenGLController::createWindow()
 	if (pWindow == NULL)
 	{
 		std::string message = "Your GPU does not support OpenGL ";
-		message += iOglMajorVersion;
+		message += std::to_string(iOglMajorVersion);
 		message += ".";
-		message += iOglMinorVersion;
-		message += "\nTry to use older version";
+		message += std::to_string(iOglMinorVersion);
+		message += "\nTry to use an other version";
 
 		MessageBox(NULL, message.c_str(), "MeshViewer 2.0 Error", MB_OK | MB_ICONERROR);
 
diff --git a/MshViewer/main.cpp b/MshViewer/main.cpp
index c6984d7..149bd44 100644
--- a/MshViewer/main.cpp
+++ b/MshViewer/main.cpp
@@ -9,6 +9,18 @@
 
 int main(int argc, char** argv)
 {
+	OpenGLController* scene = NULL;
+
+	if (argc == 3)
+	{
+		int major = atoi(argv[1]);
+		int minor = atoi(argv[2]);
+		scene = OpenGLController::getInstance(major, minor);
+	}
+	else
+		scene = OpenGLController::getInstance();
+
+
 	goto openGL;
 
 	try {
@@ -26,8 +38,6 @@ int main(int argc, char** argv)
 
 openGL:
 
-	OpenGLController *scene = OpenGLController::getInstance();
-
 	scene->loadMsh("..\\Release\\Msh\\cubeTrans.msh");
 
 	do {