Added optimization of the mutliple cessna shadow model to address peformance issues when rendering 100 cessna's.
Added optimization of the mutliple cessna shadow model to address peformance issues when rendering 100 cessna's.


ntoand/osg,stmh/osg,omega-hub/osg,koshman86/osg,XiaoCC/osg,koshman86/osg,omega-hub/osg,XiaoCC/osg,artoolkit/osg,ghub/osg,omega-hub/osg,ghub/osg,stmh/osg,XiaoCC/osg,koshman86/osg,ntoand/osg,stmh/osg,stmh/osg,artoolkit/osg,XiaoCC/osg,stmh/osg,ntoand/osg,ntoand/osg,omega-hub/osg,artoolkit/osg,artoolkit/osg,ghub/osg,ghub/osg,koshman86/osg,XiaoCC/osg