From 42723fec8f01d36cae331e31a8c6ad3500fb1f59 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 11 Dec 2007 11:57:32 +0000
Subject: [PATCH] From Joseph Steel, "he change is to
 initializeExtensionProcs() to verify the version of the OpenGL implementation
 before attempting to get the MaxTextureCoords parameter."

---
 src/osg/State.cpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/osg/State.cpp b/src/osg/State.cpp
index 9e33202ec..14f0c1c4a 100644
--- a/src/osg/State.cpp
+++ b/src/osg/State.cpp
@@ -742,12 +742,18 @@ void State::initializeExtensionProcs()
     _glDisableVertexAttribArray =  (DisableVertexAttribProc) osg::getGLExtensionFuncPtr("glDisableVertexAttribArray","glDisableVertexAttribArrayARB");
     _glBindBuffer = (BindBufferProc) osg::getGLExtensionFuncPtr("glBindBuffer","glBindBufferARB");
 
-    _glMaxTextureCoords = 1;
-    glGetIntegerv(GL_MAX_TEXTURE_COORDS,&_glMaxTextureCoords);
-
     _glMaxTextureUnits = 1;
     glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,&_glMaxTextureUnits);
-    _glMaxTextureUnits = maximum(_glMaxTextureCoords,_glMaxTextureUnits);
+
+    if (osg::getGLVersionNumber() < 2.0)
+    {
+        _glMaxTextureCoords = _glMaxTextureUnits;
+    }
+    else
+    {
+        glGetIntegerv(GL_MAX_TEXTURE_COORDS,&_glMaxTextureCoords);
+        _glMaxTextureUnits = maximum(_glMaxTextureCoords,_glMaxTextureUnits);
+    }
 
     _extensionProcsInitialized = true;
 }