From 5da431a9a6b2cee4d108e5d9a02505f69c457aa5 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 2 Nov 2010 11:44:20 +0000
Subject: [PATCH] From Mikhail Izmestev, "There is bug in
 GLBufferObject::compileBuffer when changed not first buffer entry, then
 generated new wrong offset. "

---
 src/osg/BufferObject.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/osg/BufferObject.cpp b/src/osg/BufferObject.cpp
index 343c8d680..78e3a1b52 100644
--- a/src/osg/BufferObject.cpp
+++ b/src/osg/BufferObject.cpp
@@ -138,11 +138,13 @@ void GLBufferObject::compileBuffer()
                 entry.dataSource = bd;
 
                 newTotalSize += entry.dataSize;
-                if (previousEndOfBufferDataMarker==newTotalSize)
+                if (previousEndOfBufferDataMarker!=newTotalSize)
                 {
                     offsetChanged = true;
                 }
             }
+            else
+                newTotalSize += entry.dataSize;
         }
         else
         {