diff --git a/src/InterfaceGraphic/InterfaceGraphic_Graphic3d.hxx b/src/InterfaceGraphic/InterfaceGraphic_Graphic3d.hxx
index 1fe3f754b8..a77e77813a 100755
--- a/src/InterfaceGraphic/InterfaceGraphic_Graphic3d.hxx
+++ b/src/InterfaceGraphic/InterfaceGraphic_Graphic3d.hxx
@@ -487,7 +487,7 @@ typedef struct {
 
         int IsSet;
 
-        char*  Font;
+        const char* Font;
 
         float Space;
 
diff --git a/src/OpenGl/OpenGl_Display.hxx b/src/OpenGl/OpenGl_Display.hxx
index de102b03de..81862837ec 100644
--- a/src/OpenGl/OpenGl_Display.hxx
+++ b/src/OpenGl/OpenGl_Display.hxx
@@ -116,7 +116,7 @@ class OpenGl_Display : public MMgt_TShared
 
   void Init ();
 
-  void ExportText (const wchar_t *text, const int is2d, const float x, const float y, const float z, const OpenGl_AspectText *aspect, const OpenGl_TextParam *param, const float height);
+  void ExportText (const wchar_t *text, const int is2d, const float x, const float y, const float z, const OpenGl_AspectText *aspect, const OpenGl_TextParam *param, const short height);
 
 #ifdef HAVE_GL2PS
   static void getGL2PSFontName(const char *src_font, char *ps_font);
diff --git a/src/OpenGl/OpenGl_Display_1.cxx b/src/OpenGl/OpenGl_Display_1.cxx
index eed1d32337..257cd71837 100644
--- a/src/OpenGl/OpenGl_Display_1.cxx
+++ b/src/OpenGl/OpenGl_Display_1.cxx
@@ -310,9 +310,9 @@ void OpenGl_Display::RenderText (const wchar_t* str, const int is2d, const float
   if ( renderMode == GL_FEEDBACK ) 
   {
 #ifdef HAVE_GL2PS
-    export_h = (GLdouble)fnt->FaceSize() / export_h;
+    export_h = (float)fnt->FaceSize() / export_h;
     glPopMatrix();
-    ExportText( str, is2d, x, y, z, aspect, param, export_h );
+    ExportText( str, is2d, x, y, z, aspect, param, (short)export_h );
 #endif
   }
   else
@@ -328,7 +328,7 @@ void OpenGl_Display::RenderText (const wchar_t* str, const int is2d, const float
 static const int alignmentforgl2ps[3][3] = { {5,2,8}, {4,1,7}, {6,3,9} };
 
 void OpenGl_Display::ExportText (const wchar_t* text, const int is2d, const float x, const float y, const float z,
-                                const OpenGl_AspectText *aspect, const OpenGl_TextParam *param, const float height)
+                                const OpenGl_AspectText *aspect, const OpenGl_TextParam *param, const short height)
 {
 #ifdef HAVE_GL2PS
 
diff --git a/src/OpenGl/OpenGl_FontMgr.cxx b/src/OpenGl/OpenGl_FontMgr.cxx
index 8b0abf9eb3..210366b7b8 100755
--- a/src/OpenGl/OpenGl_FontMgr.cxx
+++ b/src/OpenGl/OpenGl_FontMgr.cxx
@@ -338,8 +338,8 @@ void OpenGl_FontMgr::render_text( const Standard_Integer id, const wchar_t* text
         glDisable(GL_DEPTH_TEST);
     }
 
-    GLint* param = new GLint;    
-    glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, param);
+    GLint param;
+    glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &param);
 
     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); 
     glAlphaFunc(GL_GEQUAL, 0.285f);    
@@ -347,15 +347,13 @@ void OpenGl_FontMgr::render_text( const Standard_Integer id, const wchar_t* text
     OGLFont_Cache cache = _FontCache.Find( id );
     cache.Font->Render( text );
 
-    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, *param);
+    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, param);
 
     if( !enableTexture )
       glDisable(GL_TEXTURE_2D);
     if( !enableDepthTest )
       glDisable(GL_DEPTH_TEST);
 
-    delete param;
-
     glPopAttrib();
     glMatrixMode( GL_MODELVIEW );
     glPopMatrix();
diff --git a/src/OpenGl/OpenGl_GraphicDriver_Layer.cxx b/src/OpenGl/OpenGl_GraphicDriver_Layer.cxx
index 3b263d9954..26bee30272 100755
--- a/src/OpenGl/OpenGl_GraphicDriver_Layer.cxx
+++ b/src/OpenGl/OpenGl_GraphicDriver_Layer.cxx
@@ -248,7 +248,7 @@ void OpenGl_GraphicDriver::SetTextAttributes (const Standard_CString Font, const
   {
     CALL_DEF_CONTEXTTEXT aContextText = myDefaultContextText;
 
-    aContextText.Font = (char*)Font;
+    aContextText.Font = Font;
     aContextText.DisplayType = AType;
     aContextText.Color.r = R;
     aContextText.Color.g = G;
diff --git a/src/OpenGl/OpenGl_TextureBox.cxx b/src/OpenGl/OpenGl_TextureBox.cxx
index 1daa3ab2f5..e4493b56e5 100755
--- a/src/OpenGl/OpenGl_TextureBox.cxx
+++ b/src/OpenGl/OpenGl_TextureBox.cxx
@@ -424,13 +424,13 @@ static void MyGenTextureEXT (TextureID ID)
 */
 static void MyBindTextureEXT (TextureID ID, int Context)
 {
-  // si l'extension est presente, c'est facile
   TextureDataID data = textab[ID].data;
-  if (textab[ID].status == TEXDATA_NONE)
+  if (texdata[data].status == TEXDATA_NONE)
     return;
 
-  // OCC11904 - make sure that the correct texture is bound before drawing
-  GLenum aParamName = textab[ID].status == TEXDATA_1D ? GL_TEXTURE_BINDING_1D : GL_TEXTURE_BINDING_2D;
+  GLenum aParamName = texdata[data].status == TEXDATA_1D ? 
+	GL_TEXTURE_BINDING_1D : GL_TEXTURE_BINDING_2D;
+
   GLint aCurrTex = -1;
   glGetIntegerv (aParamName, &aCurrTex);
   if (textab[ID].number[Context] != aCurrTex)
diff --git a/src/OpenGl/OpenGl_View_2.cxx b/src/OpenGl/OpenGl_View_2.cxx
index 9ee10b10ca..d9cc87768c 100644
--- a/src/OpenGl/OpenGl_View_2.cxx
+++ b/src/OpenGl/OpenGl_View_2.cxx
@@ -946,7 +946,7 @@ D = -[Px,Py,Pz] dot |Nx|
 
 */
 
-  glPushAttrib( GL_FOG_BIT | GL_LIGHTING_BIT );
+  glPushAttrib( GL_FOG_BIT | GL_LIGHTING_BIT | GL_ENABLE_BIT );
 
   // Apply Fog
   if ( myFog.IsOn )
@@ -1184,7 +1184,7 @@ D = -[Px,Py,Pz] dot |Nx|
   if (!myGraduatedTrihedron.IsNull())
     myGraduatedTrihedron->Render(AWorkspace);
 
-  glPopAttrib(); // GL_FOG_BIT | GL_LIGHTING_BIT
+  glPopAttrib(); // GL_FOG_BIT | GL_LIGHTING_BIT | GL_ENABLE_BIT
 
   // Restore face culling
   if ( myBackfacing )
diff --git a/src/OpenGl/OpenGl_Workspace_2.cxx b/src/OpenGl/OpenGl_Workspace_2.cxx
index 45e26e070b..74745d4ee2 100644
--- a/src/OpenGl/OpenGl_Workspace_2.cxx
+++ b/src/OpenGl/OpenGl_Workspace_2.cxx
@@ -482,7 +482,7 @@ Standard_Boolean OpenGl_Workspace::Print
         {
           if (hViewBitmap)
             DeleteObject (hViewBitmap);
-          aFrameBuffer->Release ();
+          aFrameBuffer->Release (GetGlContext());
           hViewBitmap = NULL;
         }
         else