Hi Jeremy, On 27 August 2012 17:34, Jeremy Moles <cubic...@gmail.com> wrote: > You can (and in fact you have to!), but it won't set the dirty flags of > the parent Geode, so you're forced to call dirtyBound() on it as well. > This can be tough to do because you need to be sure it has already > compiled the Paths, which is why I made the initial post.
Interesting issue... The thing to be careful about allow a const dirtyBound() is that it opens the door to multi-threading issues where multiple threads could call dirty at one time - for instance from multiple cull traversals all running at the same time. There is also the problem that calling dirtyBound() would force a computeBound() on the next getBound() call which again could present a multi-threading issue where multiple threads could potentially be reading and writing from the data structures. Now... if the drawable can only be managed from a single context or from a single cull thread at one time then this multi-threading issue wouldn't be an issue, but it's a restriction that is very domain specific. Rather than relax the core OSG for a niche case might the better solution just to cast away constness from your subclass with a note that it should just be used on single thread cull. There might be a better solution down the line but for now this is route I'd prefer to take. Robert. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
