Added checks in the drawImplementation to catch when attribute bindings are set on but the relevant arrays remain unset, this prevents previous crash when this occured.
Added checks in the drawImplementation to catch when attribute bindings are set on
but the relevant arrays remain unset, this prevents previous crash when this
occured.


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