From 5c7a6a25a097ff2c73888b707510b8eadbcbcd61 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 30 Jan 2009 15:04:07 +0000
Subject: [PATCH] From Paul Melis, "I think TransferFunction needs to call
 _image->dirty() in two places in response to an assign() of new transfer map
 values. Here's an updated file, which seems to work here. "

---
 src/osg/TransferFunction.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/osg/TransferFunction.cpp b/src/osg/TransferFunction.cpp
index 9d71b883c..428283848 100644
--- a/src/osg/TransferFunction.cpp
+++ b/src/osg/TransferFunction.cpp
@@ -97,6 +97,7 @@ void TransferFunction1D::assign(const ValueMap& vcm, bool updateMinMaxRange)
                 _colors[i] = color;
             }
         }
+        _image->dirty();
         return;
     }
     
@@ -135,5 +136,7 @@ void TransferFunction1D::assign(const ValueMap& vcm, bool updateMinMaxRange)
         
         lower_itr = upper_itr;      
     }
+
+    _image->dirty();
 }