diff --git a/Apps/SandBox/wallPaper.cpp b/Apps/SandBox/wallPaper.cpp
index b16ed79851790ba30c73a731065903cf98899b9a..59f23ed60ee72daa710a33fca9ab8d37cb6f396c 100644
--- a/Apps/SandBox/wallPaper.cpp
+++ b/Apps/SandBox/wallPaper.cpp
@@ -77,6 +77,8 @@ void MyQT::cb_initGL()
 	glEnable(GL_TEXTURE_2D);
 
 
+	std::cout << Utils::GLSLShader::MAJOR_OGL_CORE << " / "<< Utils::GLSLShader::MINOR_OGL_CORE << std::endl;
+	std::cout << glGetString(GL_VERSION)<< std::endl;
 }
 
 void MyQT::cb_redraw()
diff --git a/CGoGN/include/Utils/Qt/qthistodraw.h b/CGoGN/include/Algo/Histogram/qthistodraw.h
similarity index 100%
rename from CGoGN/include/Utils/Qt/qthistodraw.h
rename to CGoGN/include/Algo/Histogram/qthistodraw.h
diff --git a/CGoGN/include/Utils/Qt/qtQGLV_glw.h b/CGoGN/include/Utils/Qt/qtQGLV_glw.h
index 5e5403d2c84e6da8d3c7a52dda8cec177d1e4d93..9bae3b46d43f699ce5c7a8a75bb12ade986c36f1 100644
--- a/CGoGN/include/Utils/Qt/qtQGLV_glw.h
+++ b/CGoGN/include/Utils/Qt/qtQGLV_glw.h
@@ -74,7 +74,7 @@ protected:
 	int m_current_button;
 
 public:
-	QGLView(SimpleQGLV* ptr, QGLFormat& format, QWidget *parent = 0);
+	QGLView(SimpleQGLV* ptr, QWidget *parent = 0);
 	~QGLView();
 
 	void setObjectBB(float* bbmin, float* bbmax);
diff --git a/CGoGN/include/Utils/Shaders/shaderCustomTex.frag b/CGoGN/include/Utils/Shaders/shaderCustomTex.frag
index 145e8c6dac5125968c49228d7a704e922aef75e1..7924b6ed05de771cc5c5de49f9c3b77db484d06b 100644
--- a/CGoGN/include/Utils/Shaders/shaderCustomTex.frag
+++ b/CGoGN/include/Utils/Shaders/shaderCustomTex.frag
@@ -8,6 +8,6 @@ uniform vec4 ambient;
 FRAG_OUT_DEF;
 void main()
 {
-	gl_FragData[0] = ambient*texture2D(textureUnit,fragTexCoord);
+	gl_FragData[0] = ambient*TEXTURE2D(textureUnit,fragTexCoord);
 	gl_FragData[1] = vec4( 0.5*normalize(N)+vec3(0.5), 1.0 );
-}
\ No newline at end of file
+}
diff --git a/CGoGN/include/Utils/Shaders/shaderPhongTexture.frag b/CGoGN/include/Utils/Shaders/shaderPhongTexture.frag
index dbdbc1850a11ca281439b37356325304c16a36fc..b9eb547395385d4bbd731ed7a595986fc0196081 100644
--- a/CGoGN/include/Utils/Shaders/shaderPhongTexture.frag
+++ b/CGoGN/include/Utils/Shaders/shaderPhongTexture.frag
@@ -18,7 +18,7 @@ void main()
 	vec3 L = normalize (LightDir);
 	float lambertTerm = dot(N,L);
 
-	vec4 finalColor = ambientCoef * texture2D(textureUnit,texCoord);
+	vec4 finalColor = ambientCoef * TEXTURE2D(textureUnit,texCoord);
 	
 	#ifdef DOUBLE_SIDED
 	if (lambertTerm < 0.0)
@@ -32,7 +32,7 @@ void main()
 		vec3 E = normalize(EyeVector);
 		vec3 R = reflect(-L, N);
 		float specular = pow( max(dot(R, E), 0.0), shininess );
-		vec3 diffuse = (1.0 - ambientCoef) * texture2D(textureUnit,texCoord).rgb;
+		vec3 diffuse = (1.0 - ambientCoef) * TEXTURE2D(textureUnit,texCoord).rgb;
 		finalColor += vec4(diffuse*lambertTerm,0.0) + materialSpecular*specular;
 	}
 	FRAG_OUT=finalColor;
diff --git a/CGoGN/include/Utils/Shaders/shaderSimpleTexture.frag b/CGoGN/include/Utils/Shaders/shaderSimpleTexture.frag
index a595a9002dd97eccb3c90f4382775a37ba235771..e5cdc04c779d71e1cc26ab25702df995f3fc98f8 100644
--- a/CGoGN/include/Utils/Shaders/shaderSimpleTexture.frag
+++ b/CGoGN/include/Utils/Shaders/shaderSimpleTexture.frag
@@ -6,5 +6,5 @@ uniform sampler2D textureUnit;
 FRAG_OUT_DEF;
 void main()
 {
-	FRAG_OUT=texture2D(textureUnit,texCoord);
-}
\ No newline at end of file
+	FRAG_OUT=TEXTURE2D(textureUnit,texCoord);
+}
diff --git a/CGoGN/include/Utils/Shaders/shaderTextureDepth.frag b/CGoGN/include/Utils/Shaders/shaderTextureDepth.frag
index 23ef74aedc2ef7d117a05741e43d776f02f3cc61..b7c61436adf955d8028723b4103dbd0d24ec4bdf 100644
--- a/CGoGN/include/Utils/Shaders/shaderTextureDepth.frag
+++ b/CGoGN/include/Utils/Shaders/shaderTextureDepth.frag
@@ -7,6 +7,6 @@ uniform sampler2D textureDepthUnit;
 FRAG_OUT_DEF;
 void main()
 {
-    gl_FragDepth = texture2D(textureDepthUnit,texCoord).r;
-	FRAG_OUT = texture2D(textureUnit,texCoord);
-}
\ No newline at end of file
+	gl_FragDepth = TEXTURE2D(textureDepthUnit,texCoord).r;
+	FRAG_OUT = TEXTURE2D(textureUnit,texCoord);
+}
diff --git a/CGoGN/include/Utils/Shaders/shaderTextureMask.frag b/CGoGN/include/Utils/Shaders/shaderTextureMask.frag
index d9ecb8c3586dd1a1a02e5561c06cf777666f486d..e4a7191b1eb116f6fdc4575ebd40c74ca93f229d 100644
--- a/CGoGN/include/Utils/Shaders/shaderTextureMask.frag
+++ b/CGoGN/include/Utils/Shaders/shaderTextureMask.frag
@@ -7,8 +7,8 @@ uniform sampler2D textureUnitMask;
 FRAG_OUT_DEF;
 void main()
 {
-	float m = texture2D(textureUnitMask,texCoord).r;
+	float m = TEXTURE2D(textureUnitMask,texCoord).r;
 	if (m < 0.5)
 		discard;
-	FRAG_OUT=texture2D(textureUnit,texCoord)*m;
+	FRAG_OUT=TEXTURE2D(textureUnit,texCoord)*m;
 }
diff --git a/CGoGN/include/Utils/Shaders/shaderWallPaper.frag b/CGoGN/include/Utils/Shaders/shaderWallPaper.frag
index 649e6b07c56b466163cf12260e5b4f40417e572d..042daa6103c313c8e5f4ad4e16087e58069209c4 100644
--- a/CGoGN/include/Utils/Shaders/shaderWallPaper.frag
+++ b/CGoGN/include/Utils/Shaders/shaderWallPaper.frag
@@ -6,5 +6,5 @@ uniform sampler2D textureUnit;
 FRAG_OUT_DEF;
 void main()
 {
-	FRAG_OUT=texture2D(textureUnit,texCoord);
+	FRAG_OUT=TEXTURE2D(textureUnit,texCoord);
 }
diff --git a/CGoGN/include/Utils/text3d.frag b/CGoGN/include/Utils/text3d.frag
index 88b4fa26093a68fb27c65b6659f8c79c2dd6e632..72e86309bd2876462876e35e00ec2cb23ceeb40a 100644
--- a/CGoGN/include/Utils/text3d.frag
+++ b/CGoGN/include/Utils/text3d.frag
@@ -6,5 +6,5 @@ uniform vec4 color;
 FRAG_OUT_DEF;
 void main (void)
 {
-	float lum = texture2D(FontTexture, tex_coord).s;;
+	float lum = TEXTURE2D(FontTexture, tex_coord).s;;
 // no } because it is added in the shader class code (with other things)
diff --git a/CGoGN/src/Utils/Qt/qthistodraw.cpp b/CGoGN/src/Algo/Histogram/qthistodraw.cpp
similarity index 100%
rename from CGoGN/src/Utils/Qt/qthistodraw.cpp
rename to CGoGN/src/Algo/Histogram/qthistodraw.cpp
diff --git a/CGoGN/src/Utils/GLSLShader.cpp b/CGoGN/src/Utils/GLSLShader.cpp
index 4c975adcd82e4f9858cb2f536151614de0d85431..43c8bfdd255fc8e74c4e0f56f8cc4c0ac845b63b 100644
--- a/CGoGN/src/Utils/GLSLShader.cpp
+++ b/CGoGN/src/Utils/GLSLShader.cpp
@@ -59,7 +59,9 @@ std::string GLSLShader::DEFINES_GL2=\
 "#define VARYING_FRAG varying\n"
 "#define FRAG_OUT_DEF float pipo_FRAGDEF\n"
 "#define FRAG_OUT gl_FragColor\n"
-"#define INVARIANT_POS float pipo_INVARIANT\n";
+"#define INVARIANT_POS float pipo_INVARIANT\n"
+"#define TEXTURE2D texture2D\n"
+;
 
 
 std::string GLSLShader::DEFINES_GL3=\
@@ -70,7 +72,8 @@ std::string GLSLShader::DEFINES_GL3=\
 "#define VARYING_FRAG in\n"
 "#define FRAG_OUT_DEF out vec4 outFragColor\n"
 "#define FRAG_OUT outFragColor\n"
-"#define INVARIANT_POS invariant gl_Position\n";
+"#define INVARIANT_POS invariant gl_Position\n"
+"#define TEXTURE2D texture\n";
 
 
 std::string* GLSLShader::DEFINES_GL = NULL;
@@ -98,7 +101,7 @@ GLSLShader::GLSLShader() :
 	*m_uniMat_Normal = -1;
 
 	if (DEFINES_GL == NULL)
-		DEFINES_GL = &DEFINES_GL2;
+		setCurrentOGLVersion(MAJOR_OGL_CORE,MINOR_OGL_CORE);
 
 	m_nbMaxVertices = 16;
 
diff --git a/CGoGN/src/Utils/Qt/qtQGLV.cpp b/CGoGN/src/Utils/Qt/qtQGLV.cpp
index a798f90815336664a08be32385b40e6d4e39f175..a038843a39a2ea25aea66dd17f02f0eff86c1851 100644
--- a/CGoGN/src/Utils/Qt/qtQGLV.cpp
+++ b/CGoGN/src/Utils/Qt/qtQGLV.cpp
@@ -56,16 +56,14 @@ SimpleQGLV::SimpleQGLV() :
 	QGLFormat format;
 	if (GLSLShader::CURRENT_OGL_VERSION >= 3)
 	{
-		format.setProfile(QGLFormat::CoreProfile);
-		format.setVersion(GLSLShader::MAJOR_OGL_CORE, GLSLShader::MINOR_OGL_CORE);
-		format.setDepth(true);
-		format.setDepthBufferSize(24);
-		format.setDoubleBuffer(true);
+		QGLFormat glFormat;
+		glFormat.setVersion( Utils::GLSLShader::MAJOR_OGL_CORE, Utils::GLSLShader::MINOR_OGL_CORE);
+		glFormat.setProfile( QGLFormat::CoreProfile ); // Requires >=Qt-4.8.0
+		glFormat.setSampleBuffers( true );
+		QGLFormat::setDefaultFormat(glFormat);
 	}
-	else
-		format = QGLFormat::defaultFormat();
 
-	m_qglWidget = new QGLView(this,format);
+	m_qglWidget = new QGLView(this);
 
 	setCentralWidget(m_qglWidget);
 	setWindowTitle(tr("CGoGN"));
@@ -143,7 +141,7 @@ SimpleQGLV::SimpleQGLV(const SimpleQGLV& sqt):
 	m_transfo_matrix(m_mat.m_matrices[2])
 {
 	QGLFormat format = sqt.m_qglWidget->format();
-	m_qglWidget = new QGLView(this,format);
+	m_qglWidget = new QGLView(this);
 
 	setCentralWidget(m_qglWidget);
 
@@ -172,8 +170,7 @@ SimpleQGLV::~SimpleQGLV()
 
 void SimpleQGLV::operator=(const SimpleQGLV& sqt)
 {
-	QGLFormat format = sqt.m_qglWidget->format();
-	m_qglWidget = new QGLView(this,format);
+	m_qglWidget = new QGLView(this);
 
 	setCentralWidget(m_qglWidget) ;
 
diff --git a/CGoGN/src/Utils/Qt/qtQGLV_glw.cpp b/CGoGN/src/Utils/Qt/qtQGLV_glw.cpp
index e4f62962655c43dc9f85b8cd91834746350f4b5c..2b895c4a564f3976c533fbf2285b29c2d875765d 100644
--- a/CGoGN/src/Utils/Qt/qtQGLV_glw.cpp
+++ b/CGoGN/src/Utils/Qt/qtQGLV_glw.cpp
@@ -44,8 +44,8 @@ namespace QT
 {
 
 
-QGLView::QGLView(SimpleQGLV* ptr, QGLFormat& format, QWidget *parent):
-	QGLViewer(format,parent),
+QGLView::QGLView(SimpleQGLV* ptr, QWidget *parent):
+	QGLViewer(parent),
 	m_sqgl(ptr),m_state_modifier(0)
 {
 }
diff --git a/CGoGN/src/Utils/Qt/qtSimple.cpp b/CGoGN/src/Utils/Qt/qtSimple.cpp
index 730c305dfcd5988e47042f86c119df73d176edd1..c8027cff00772692d8a12c3a900ff01eb36d68ae 100644
--- a/CGoGN/src/Utils/Qt/qtSimple.cpp
+++ b/CGoGN/src/Utils/Qt/qtSimple.cpp
@@ -56,17 +56,13 @@ SimpleQT::SimpleQT() :
 {
 	if (GLSLShader::CURRENT_OGL_VERSION >= 3)
 	{
-		QGLFormat format;
-		format.setProfile(QGLFormat::CoreProfile);
-		format.setVersion(GLSLShader::MAJOR_OGL_CORE, GLSLShader::MINOR_OGL_CORE);
-		format.setDepth(true);
-//		format.setDepthBufferSize(24);
-		format.setDoubleBuffer(true);
-
-		m_glWidget = new GLWidget(this,format);
+		QGLFormat glFormat;
+		glFormat.setVersion( Utils::GLSLShader::MAJOR_OGL_CORE, Utils::GLSLShader::MINOR_OGL_CORE);
+		glFormat.setProfile( QGLFormat::CoreProfile ); // Requires >=Qt-4.8.0
+		glFormat.setSampleBuffers( true );
+		QGLFormat::setDefaultFormat(glFormat);
 	}
-	else
-		m_glWidget = new GLWidget(this);
+	m_glWidget = new GLWidget(this);
 
 
 	setCentralWidget(m_glWidget);
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7fb1f3dfb3a644184cc0cfaf89f1e69923354a6a..72770df3cc8cfa315265a246e35ecbc7270766b4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -140,7 +140,7 @@ LIST(APPEND CGoGN_DEFS -DGLM_FORCE_RADIANS)
 LIST(APPEND CGoGN_DEFS -DCGOGN_ASSERT_BOOL=${CGoGN_ASSERT_ACTIVED})
 
 IF(CGoGN_USE_OGL_CORE_PROFILE)
-	LIST(APPEND CGoGN_DEFS -DCGoGN_USE_OGL_CORE_PROFILE=1)
+	LIST(APPEND CGoGN_DEFS -DCGOGN_USE_OGL_CORE_PROFILE=1)
 ENDIF()
 
 LIST(APPEND CGoGN_DEFS -DSHADERPATH=\"${CGoGN_ROOT_DIR}/lib/Shaders/\")
diff --git a/SCHNApps/include/view.h b/SCHNApps/include/view.h
index 350b98f0f984bea37fdf538656ff7daf148e731d..704f1d27e2349c86a44ba1868042e756e06b0ee0 100644
--- a/SCHNApps/include/view.h
+++ b/SCHNApps/include/view.h
@@ -40,8 +40,8 @@ class SCHNAPPS_API View : public QGLViewer
 public:
 	static unsigned int viewCount;
 
-	View(const QString& name, SCHNApps* s, QGLFormat& format);
-	View(const QString& name, SCHNApps* s, QGLFormat& format, const QGLWidget* shareWidget);
+	View(const QString& name, SCHNApps* s);
+	View(const QString& name, SCHNApps* s, const QGLWidget* shareWidget);
 	~View();
 
 	const QString& getName() const { return m_name; }
diff --git a/SCHNApps/src/schnapps.cpp b/SCHNApps/src/schnapps.cpp
index 57559498ee91939cc8ba5771e9180d5a38c4ee88..23231169830152641dc53838f1d3ed71d84899fa 100644
--- a/SCHNApps/src/schnapps.cpp
+++ b/SCHNApps/src/schnapps.cpp
@@ -44,12 +44,6 @@ SCHNApps::SCHNApps(const QString& appPath, PythonQtObjectPtr& pythonContext, Pyt
 {
 	GenericMap::initAllStatics(&m_sp);
 
-#ifdef CGoGN_USE_OGL_CORE_PROFILE
-	CGoGN::Utils::GLSLShader::setCurrentOGLVersion(3);
-#else
-	CGoGN::Utils::GLSLShader::setCurrentOGLVersion(2);
-#endif
-
 	this->setupUi(this);
 
 	// create & setup control dock
@@ -116,6 +110,15 @@ SCHNApps::SCHNApps(const QString& appPath, PythonQtObjectPtr& pythonContext, Pyt
 	b_rootSplitterInitialized = false;
 	m_centralLayout->addWidget(m_rootSplitter);
 
+	if (Utils::GLSLShader::CURRENT_OGL_VERSION >= 3)
+	{
+		QGLFormat glFormat;
+		glFormat.setVersion( Utils::GLSLShader::MAJOR_OGL_CORE, Utils::GLSLShader::MINOR_OGL_CORE);
+		glFormat.setProfile( QGLFormat::CoreProfile ); // Requires >=Qt-4.8.0
+		glFormat.setSampleBuffers( true );
+		QGLFormat::setDefaultFormat(glFormat);
+	}
+
 	m_firstView = addView();
 	setSelectedView(m_firstView);
 	m_rootSplitter->addWidget(m_firstView);
@@ -196,27 +199,7 @@ View* SCHNApps::addView(const QString& name)
 	if (m_views.contains(name))
 		return NULL;
 
-	QGLFormat format;
-	if (Utils::GLSLShader::CURRENT_OGL_VERSION >= 3)
-	{
-		format.setProfile(QGLFormat::CoreProfile);
-		format.setVersion(Utils::GLSLShader::MAJOR_OGL_CORE, Utils::GLSLShader::MINOR_OGL_CORE);
-		format.setDepth(true);
-		format.setDoubleBuffer(true);
-		format.setBlueBufferSize(8);
-		std::cout << "CORE_PROFILE GL"<< std::endl;
-	}
-	else
-	{
-		format = QGLFormat::defaultFormat();
-		std::cout << "DEFAULT GL"<< std::endl;
-	}
-
-	View* view = NULL;
-	if(m_firstView == NULL)
-		view = new View(name, this, format);
-	else
-		view = new View(name, this, format, m_firstView);
+	View* view = new View(name, this, m_firstView);
 
 	m_views.insert(name, view);
 
diff --git a/SCHNApps/src/view.cpp b/SCHNApps/src/view.cpp
index b220126f3812a4a5561eb2fae8a206c775f83fcc..1af88fbfcea271d4c7a647c028c1e6fa7f40a713 100644
--- a/SCHNApps/src/view.cpp
+++ b/SCHNApps/src/view.cpp
@@ -21,9 +21,8 @@ namespace SCHNApps
 {
 
 unsigned int View::viewCount = 0;
-
-View::View(const QString& name, SCHNApps* s, QGLFormat& format) :
-	QGLViewer(format, NULL, NULL),
+View::View(const QString& name, SCHNApps* s) :
+	QGLViewer(),
 	b_updatingUI(false),
 	m_name(name),
 	m_schnapps(s),
@@ -83,8 +82,8 @@ View::View(const QString& name, SCHNApps* s, QGLFormat& format) :
 	connect(m_schnapps, SIGNAL(schnappsClosing()), this, SLOT(closeDialogs()));
 }
 
-View::View(const QString& name, SCHNApps* s, QGLFormat& format, const QGLWidget* shareWidget) :
-	QGLViewer(format, NULL, shareWidget),
+View::View(const QString& name, SCHNApps* s, const QGLWidget* shareWidget) :
+	QGLViewer( NULL, shareWidget),
 	b_updatingUI(false),
 	m_name(name),
 	m_schnapps(s),
@@ -354,11 +353,8 @@ void View::init()
 	glewExperimental = GL_TRUE; // needed for GL Core Profile 3.3
 	glewInit();
 
-//	int major = 0;
-//	int minor = 0;
-//	glGetIntegerv(GL_MAJOR_VERSION, &major);
-//	glGetIntegerv(GL_MINOR_VERSION, &minor);
-//	std::cout << this->getName().toStdString() << "is using GL "<< major <<"."<< minor << std::endl;
+	std::cout << "using " << glGetString(GL_VERSION) << std::endl;
+
 
 	qglviewer::Camera* c = this->camera();
 	this->setCamera(m_currentCamera);
diff --git a/ThirdParty/PythonQt/CMakeLists.txt b/ThirdParty/PythonQt/CMakeLists.txt
index e6b30fef6ccf6f0e3eaed56e88ad6949326bfd07..ade4f5711a861c5acad6d794a342eb17fc43dbe9 100644
--- a/ThirdParty/PythonQt/CMakeLists.txt
+++ b/ThirdParty/PythonQt/CMakeLists.txt
@@ -16,7 +16,7 @@ project(PythonQt)
 find_package(PythonLibs 2.7 REQUIRED)
 include_directories("${PYTHON_INCLUDE_DIR}")
 add_definitions("-DPYTHONQT_USE_RELEASE_PYTHON_FALLBACK")
-FILE(WRITE ${CGoGN_ROOT_DIR}/include/python_version.h ${PYTHONLIBS_VERSION_STRING})
+
 #-----------------------------------------------------------------------------
 # Build options
 
diff --git a/ThirdParty/libQGLViewer/QGLViewer/qglviewer.cpp b/ThirdParty/libQGLViewer/QGLViewer/qglviewer.cpp
index 7e38de8d231c6a96905fcce85923ae22fa0433aa..fe5d2b817a2ab065660c1074daf351e6be6fd292 100644
--- a/ThirdParty/libQGLViewer/QGLViewer/qglviewer.cpp
+++ b/ThirdParty/libQGLViewer/QGLViewer/qglviewer.cpp
@@ -363,8 +363,8 @@ void QGLViewer::postDraw()
 	glEnable(GL_RESCALE_NORMAL);
 #endif
 
-	glDisable(GL_COLOR_MATERIAL);
-	qglColor(foregroundColor());
+//	glDisable(GL_COLOR_MATERIAL);
+//	qglColor(foregroundColor());
 
 	if (cameraIsEdited())
 		camera()->drawAllPaths();