Hi Richard, On Wed, Mar 24, 2010 at 2:54 PM, Schmidt, Richard <[email protected]> wrote: > Hi Robert, > i am using 2.8.2 > > The method getParentalNodePaths is used to retrieve the parent node paths. > > This is done in the database pager thread. However these node paths might > change while traversing them, because the user may change the scenegraph in > the update loop.
This case also occurs when the DatabasePager itself expires subgraphs out from underneath the PagedLOD being server. One has to set an aggressive expiry of subgraphs and move the camera very fast between locations to cause this, with help of a user I was able to reproduce it reliably. The new DatabasePager fixes this issue and is very likely to fix the issue you've been seeing. Back porting the changes to DatabasePager to the OSG-2.8 branch is possible, but it does require merging changes to OpenThreads, osg::Referenced, osg::Observer/observer_ptr<>, introduction of a new ObserverNodePath class. The breadth of changes make it risky to merge with OSG-2.8, so I believe Paul Martz won't be merging these for 2.8.3. To get access to the fixes you'll need to use 2.9.7 or svn/trunk. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
