From 24c19fa17eb7b64cd0e82379833eac787d551d3d Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 7 May 2009 18:30:33 +0000
Subject: [PATCH] Changed setting of stack back assigned to push_back to fix
 bug with cull mask management.

---
 include/osg/Polytope | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/osg/Polytope b/include/osg/Polytope
index 0595bb7fd..f70cb5234 100644
--- a/include/osg/Polytope
+++ b/include/osg/Polytope
@@ -165,7 +165,7 @@ class OSG_EXPORT Polytope
             {
                 _resultMask = (_resultMask<<1) | 1;
             }
-            _maskStack.back() = _resultMask;
+            _maskStack.push_back(_resultMask);
         }
 
         inline ClippingMask& getCurrentMask() { return _maskStack.back(); }