From 39b8aa45bcb76137d11dfedd74be305145d03104 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 15 Mar 2011 13:53:59 +0000
Subject: [PATCH] Added checked against GL version number for enabled
 _isTexture3DSupported.

---
 src/osg/Texture2DArray.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/osg/Texture2DArray.cpp b/src/osg/Texture2DArray.cpp
index 5579e191d..ec77b6009 100644
--- a/src/osg/Texture2DArray.cpp
+++ b/src/osg/Texture2DArray.cpp
@@ -708,7 +708,10 @@ void Texture2DArray::Extensions::lowestCommonDenominator(const Extensions& rhs)
 
 void Texture2DArray::Extensions::setupGLExtensions(unsigned int contextID)
 {
-    _isTexture3DSupported = OSG_GL3_FEATURES || isGLExtensionSupported(contextID,"GL_EXT_texture3D");
+    _isTexture3DSupported = OSG_GL3_FEATURES ||
+                            isGLExtensionSupported(contextID,"GL_EXT_texture3D") ||
+                            strncmp((const char*)glGetString(GL_VERSION),"1.2",3)>=0;
+
     _isTexture2DArraySupported = OSG_GL3_FEATURES || isGLExtensionSupported(contextID,"GL_EXT_texture_array");
 
     _max2DSize = 0;