From 009ddf1b1e75fce8f8b7ae774456d1e1e1093a16 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 8 Apr 2009 10:48:22 +0000
Subject: [PATCH] From Glenn Waldron, "Attached is a patch for
 osgUtil::Optimizer. If you run the SpatializeGroupsVisitor on a scene graph
 containing Geodes, StateSets attached to Geodes can be lost.

The problem is in SpatializeGroupsVisitor::divide(osg::Geode*, unsigned int) where the code creates a new Group and divides up the input Geode into one Geode per Drawable.

I fixed the problem by assigning the Geode's stateset to the new parent group.

To replicate the bug, see attached osg/dds files:

osgviewer b.osg -- model renders correctly
set OSG_OPTIMIZER="SPATIALIZE_GROUPS"
osgviewer b.osg -- textures are missing."
---
 src/osgUtil/Optimizer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/osgUtil/Optimizer.cpp b/src/osgUtil/Optimizer.cpp
index 0a482864a..f8496e579 100644
--- a/src/osgUtil/Optimizer.cpp
+++ b/src/osgUtil/Optimizer.cpp
@@ -2822,6 +2822,8 @@ bool Optimizer::SpatializeGroupsVisitor::divide(osg::Geode* geode, unsigned int
     }
 
     osg::ref_ptr<osg::Group> group = new osg::Group;
+    group->setName(geode->getName());
+    group->setStateSet(geode->getStateSet());
     for(i=0; i<geode->getNumDrawables(); ++i)
     {
         osg::Geode* newGeode = new osg::Geode;