On Fri, Aug 10, 2012 at 12:50 PM, James Turner <zakal...@mac.com> wrote: > > On 9 Aug 2012, at 21:49, Stuart Buchanan wrote: > >>>> Do we have any ideas addressing these issues? > > Random thought, hopefully someone with more OSG knowledge can confirm or deny: > > Can we create the geometry (and unload it) in the cull-callback? I.e set an > appropriate bounding volume for the LOD node, and only build the geometry > when the node actually passes culling. And obviously after some number of > frames of being culled, unload the geometry again. > This is what osg::PagedLOD does, though we often forget that the paging of the higher LODs is triggered in the cull phase. > I can't recall what scene modifications are / are not permitted inside a > cull-callbacl, however. You would want to let the OSG loader mechanism and the database pager do their thing. Geometry doesn't have to be loaded from files...
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