diff --git a/external/ege b/external/ege
index d68acc19..912f4b83 160000
--- a/external/ege
+++ b/external/ege
@@ -1 +1 @@
-Subproject commit d68acc190307c9be0232f3b17cfe0c8cbb3ea683
+Subproject commit 912f4b83167007e6ca5bed76d899316a802f1590
diff --git a/sources/ewol/compositing/Area.cpp b/sources/ewol/compositing/Area.cpp
index 93bc1505..303ec815 100644
--- a/sources/ewol/compositing/Area.cpp
+++ b/sources/ewol/compositing/Area.cpp
@@ -49,7 +49,7 @@ void ewol::Area::LoadProgram(void)
 	}
 }
 
-void ewol::Area::Draw(void)
+void ewol::Area::Draw(bool _disableDepthTest)
 {
 	if (m_coord.Size()<=0) {
 		//EWOL_WARNING("Nothink to draw...");
diff --git a/sources/ewol/compositing/Area.h b/sources/ewol/compositing/Area.h
index 1fe64ce3..9f36801f 100644
--- a/sources/ewol/compositing/Area.h
+++ b/sources/ewol/compositing/Area.h
@@ -51,7 +51,7 @@ namespace ewol
 			/**
 			 * @brief Draw All the refistered text in the current element on openGL
 			 */
-			void Draw(void);
+			void Draw(bool _disableDepthTest=true);
 			/**
 			 * @brief Clear alll the registered element in the current element
 			 */
diff --git a/sources/ewol/compositing/Compositing.h b/sources/ewol/compositing/Compositing.h
index 7f37c700..78417f7a 100644
--- a/sources/ewol/compositing/Compositing.h
+++ b/sources/ewol/compositing/Compositing.h
@@ -31,7 +31,7 @@ namespace ewol
 			/**
 			 * @brief Virtal pure function that request the draw of all openGl elements
 			 */
-			virtual void Draw(void)=0;
+			virtual void Draw(bool _disableDepthTest=true)=0;
 			/**
 			 * @brief Clear alll tre registered element in the current element
 			 */
diff --git a/sources/ewol/compositing/Drawing.cpp b/sources/ewol/compositing/Drawing.cpp
index c15c847d..ed12fbad 100644
--- a/sources/ewol/compositing/Drawing.cpp
+++ b/sources/ewol/compositing/Drawing.cpp
@@ -305,7 +305,7 @@ void ewol::Drawing::LoadProgram(void)
 	}
 }
 
-void ewol::Drawing::Draw(void)
+void ewol::Drawing::Draw(bool _disableDepthTest)
 {
 	if (m_coord.Size()<=0) {
 		// TODO : a remÚtre ...
diff --git a/sources/ewol/compositing/Drawing.h b/sources/ewol/compositing/Drawing.h
index a9ae807e..1553b159 100644
--- a/sources/ewol/compositing/Drawing.h
+++ b/sources/ewol/compositing/Drawing.h
@@ -82,7 +82,7 @@ namespace ewol
 			/**
 			 * @brief Draw All the refistered text in the current element on openGL
 			 */
-			void Draw(void);
+			void Draw(bool _disableDepthTest=true);
 			/**
 			 * @brief Clear alll tre registered element in the current element
 			 */
diff --git a/sources/ewol/compositing/Image.cpp b/sources/ewol/compositing/Image.cpp
index 30d3da69..0b7c9a1f 100644
--- a/sources/ewol/compositing/Image.cpp
+++ b/sources/ewol/compositing/Image.cpp
@@ -51,7 +51,7 @@ void ewol::Image::LoadProgram(void)
 	}
 }
 
-void ewol::Image::Draw(void)
+void ewol::Image::Draw(bool _disableDepthTest)
 {
 	if (m_coord.Size()<=0) {
 		//EWOL_WARNING("Nothink to draw...");
@@ -65,7 +65,11 @@ void ewol::Image::Draw(void)
 		EWOL_ERROR("No shader ...");
 		return;
 	}
-	ewol::openGL::Disable(ewol::openGL::FLAG_DEPTH_TEST);
+	if (_disableDepthTest == true) {
+		ewol::openGL::Disable(ewol::openGL::FLAG_DEPTH_TEST);
+	} else {
+		ewol::openGL::Enable(ewol::openGL::FLAG_DEPTH_TEST);
+	}
 	// set Matrix : translation/positionMatrix
 	mat4 tmpMatrix = ewol::openGL::GetMatrix()*m_matrixApply;
 	m_GLprogram->Use(); 
diff --git a/sources/ewol/compositing/Image.h b/sources/ewol/compositing/Image.h
index f132cec4..c2ece91b 100644
--- a/sources/ewol/compositing/Image.h
+++ b/sources/ewol/compositing/Image.h
@@ -55,8 +55,9 @@ namespace ewol
 		public:
 			/**
 			 * @brief Draw All the refistered text in the current element on openGL
+			 * @param[in] _disableDepthTest Disable the Depth test for display
 			 */
-			void Draw(void);
+			void Draw(bool _disableDepthTest=true);
 			/**
 			 * @brief Clear alll tre registered element in the current element
 			 */
diff --git a/sources/ewol/compositing/Shaper.cpp b/sources/ewol/compositing/Shaper.cpp
index 1f7f04e9..5c500974 100644
--- a/sources/ewol/compositing/Shaper.cpp
+++ b/sources/ewol/compositing/Shaper.cpp
@@ -103,7 +103,7 @@ void ewol::Shaper::LoadProgram(void)
 }
 
 
-void ewol::Shaper::Draw(void)
+void ewol::Shaper::Draw(bool _disableDepthTest)
 {
 	if (m_config == NULL) {
 		// this is a normale case ... the user can choice to have no config basic file ...
diff --git a/sources/ewol/compositing/Shaper.h b/sources/ewol/compositing/Shaper.h
index 4c4640c1..ffafd4c3 100644
--- a/sources/ewol/compositing/Shaper.h
+++ b/sources/ewol/compositing/Shaper.h
@@ -79,7 +79,7 @@ namespace ewol
 			/**
 			 * @brief Draw All the refistered text in the current element on openGL
 			 */
-			void Draw(void);
+			void Draw(bool _disableDepthTest=true);
 			/**
 			 * @brief Clear alll tre registered element in the current element
 			 */
diff --git a/sources/ewol/compositing/Text.cpp b/sources/ewol/compositing/Text.cpp
index 0a8d97e2..b09cf3d8 100644
--- a/sources/ewol/compositing/Text.cpp
+++ b/sources/ewol/compositing/Text.cpp
@@ -110,7 +110,7 @@ void ewol::Text::Draw(const mat4& _transformationMatrix, bool _enableDepthTest)
 }
 
 
-void ewol::Text::Draw(void)
+void ewol::Text::Draw(bool _disableDepthTest)
 {
 	// draw BG in any case:
 	m_vectorialDraw.Draw();
diff --git a/sources/ewol/compositing/Text.h b/sources/ewol/compositing/Text.h
index 1e09ab61..edc8708c 100644
--- a/sources/ewol/compositing/Text.h
+++ b/sources/ewol/compositing/Text.h
@@ -115,7 +115,7 @@ namespace ewol
 			/**
 			 * @brief Draw All the refistered text in the current element on openGL
 			 */
-			void Draw(void);
+			void Draw(bool _disableDepthTest=true);
 			void Draw(const mat4& _transformationMatrix, bool _enableDepthTest=false);
 			/**
 			 * @brief Clear all the registered element in the current element
diff --git a/sources/ewol/resources/Mesh.cpp b/sources/ewol/resources/Mesh.cpp
index 7bcf5e8f..53ed5e33 100644
--- a/sources/ewol/resources/Mesh.cpp
+++ b/sources/ewol/resources/Mesh.cpp
@@ -78,14 +78,21 @@ ewol::Mesh::~Mesh(void)
 
 //#define DISPLAY_NB_VERTEX_DISPLAYED
 
-void ewol::Mesh::Draw(mat4& positionMatrix)
+void ewol::Mesh::Draw(mat4& _positionMatrix, bool _enableDepthTest, bool _enableDepthUpdate)
 {
 	if (m_GLprogram==NULL) {
 		EWOL_ERROR("No shader ...");
 		return;
 	}
 	//EWOL_DEBUG(m_name << "  " << m_light);
-	ewol::openGL::Enable(ewol::openGL::FLAG_DEPTH_TEST);
+	if (_enableDepthTest==true) {
+		ewol::openGL::Enable(ewol::openGL::FLAG_DEPTH_TEST);
+		if (false==_enableDepthUpdate) {
+			glDepthMask(GL_FALSE);
+		}
+	} else {
+		ewol::openGL::Disable(ewol::openGL::FLAG_DEPTH_TEST);
+	}
 	//EWOL_DEBUG("    Display " << m_coord.Size() << " elements" );
 	m_GLprogram->Use();
 	// set Matrix : translation/positionMatrix
@@ -93,7 +100,7 @@ void ewol::Mesh::Draw(mat4& positionMatrix)
 	mat4 camMatrix = ewol::openGL::GetCameraMatrix();
 	mat4 tmpMatrix = projMatrix * camMatrix;
 	m_GLprogram->UniformMatrix4fv(m_GLMatrix, 1, tmpMatrix.m_mat);
-	m_GLprogram->UniformMatrix4fv(m_GLMatrixPosition, 1, positionMatrix.m_mat);
+	m_GLprogram->UniformMatrix4fv(m_GLMatrixPosition, 1, _positionMatrix.m_mat);
 	// position :
 	m_GLprogram->SendAttributePointer(m_GLPosition, 3/*x,y,z*/, m_verticesVBO, MESH_VBO_VERTICES);
 	// Texture :
@@ -119,7 +126,7 @@ void ewol::Mesh::Draw(mat4& positionMatrix)
 				nbElementDrawTheoric += m_listFaces.GetValue(kkk).m_index.Size();
 			#endif
 		} else {
-			mat4 mattttt = (projMatrix * camMatrix) * positionMatrix;
+			mat4 mattttt = (projMatrix * camMatrix) * _positionMatrix;
 			mattttt.m_mat[3] = 0;
 			mattttt.m_mat[7] = 0;
 			mattttt.m_mat[11] = 0;
@@ -160,7 +167,12 @@ void ewol::Mesh::Draw(mat4& positionMatrix)
 		EWOL_DEBUG(((float)nbElementDraw/(float)nbElementDrawTheoric*100.0f) << "% Request Draw : " << m_listFaces.Size() << ":" << nbElementDraw << "/" << nbElementDrawTheoric << " elements [" << m_name << "]");
 	#endif
 	m_GLprogram->UnUse();
-	ewol::openGL::Disable(ewol::openGL::FLAG_DEPTH_TEST);
+	if (_enableDepthTest==true){
+		if (false==_enableDepthUpdate) {
+			glDepthMask(GL_TRUE);
+		}
+		ewol::openGL::Disable(ewol::openGL::FLAG_DEPTH_TEST);
+	}
 	// TODO : UNDERSTAND why ... it is needed
 	glBindBuffer(GL_ARRAY_BUFFER,0);
 }
diff --git a/sources/ewol/resources/Mesh.h b/sources/ewol/resources/Mesh.h
index b032da71..28d6b42f 100644
--- a/sources/ewol/resources/Mesh.h
+++ b/sources/ewol/resources/Mesh.h
@@ -112,7 +112,7 @@ namespace ewol
 			virtual ~Mesh(void);
 		public:
 			virtual const char* GetType(void) { return "ewol::Mesh"; };
-			virtual void Draw(mat4& positionMatrix);
+			virtual void Draw(mat4& _positionMatrix, bool _enableDepthTest=true, bool _enableDepthUpdate=true);
 			void GenerateVBO(void);
 		private:
 			void CalculateNormaleFace(void);
@@ -125,7 +125,16 @@ namespace ewol
 		public:
 			void AddMaterial(const etk::UString& _name, ewol::Material* _data);
 		public:
-			
+			/**
+			 * @brief Set the check of normal position befor sending it to the openGl card
+			 * @param[in] _status New state.
+			 */
+			void SetCheckNormal(bool _status) { m_checkNormal=_status; };
+			/**
+			 * @brief Get the check value of normal position befor sending it to the openGl card
+			 * @return Get the chcking stus of normal or not
+			 */
+			bool GetCheckNormal(void) { return m_checkNormal; };
 			const etk::Vector<ewol::PhysicsShape*>& GetPhysicalProperties(void) const { return m_physics; };
 		private:
 			void* m_pointerShape; //!< all mesh have a basic shape (bullet or other) the void pointer mermit to not depent on the bullet lib