From 3907053280c847e5822e0b91b0a84ce443d46f36 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Fri, 24 Jul 2015 10:22:07 +0300
Subject: [PATCH] 0026476: Visualization, TKOpenGl - do not enable GL_NORMALIZE
 in core profile

---
 src/OpenGl/OpenGl_Context.cxx | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/OpenGl/OpenGl_Context.cxx b/src/OpenGl/OpenGl_Context.cxx
index d09fdd5c55..5a1a4e7d97 100644
--- a/src/OpenGl/OpenGl_Context.cxx
+++ b/src/OpenGl/OpenGl_Context.cxx
@@ -2625,13 +2625,16 @@ Standard_Boolean OpenGl_Context::SetGlNormalizeEnabled (Standard_Boolean isEnabl
   myIsGlNormalizeEnabled = isEnabled;
 
 #if !defined(GL_ES_VERSION_2_0)
-  if (isEnabled)
+  if (core11 != NULL)
   {
-    glEnable (GL_NORMALIZE);
-  }
-  else
-  {
-    glDisable (GL_NORMALIZE);
+    if (isEnabled)
+    {
+      ::glEnable  (GL_NORMALIZE);
+    }
+    else
+    {
+      ::glDisable (GL_NORMALIZE);
+    }
   }
 #endif