Hi Shayne, How much popping you'll see depends upon your database, database pager configuration and hardware. To reduce popping you basically want the higher level of details to pop in sooner so the transition happens with a smaller pixel shift. You have provided any info about your specific database setup/OSG version/hardware target etc. so I can't really add much more.
W.r.t fade lod, this might be the way forward, but it would require creating a new node in the LOD to support it. It would be a useful feature to have in the OSG, and these days with frame buffer object being readily available it's should certainly be easier now to implement it than ever before. How to go about it is a long topic of conservation though so I won't dive into it right now. W.r.t looking at alternative terrain systems, such as libmini, this might offer a solution, but it will only deal with the terrain not the extra cultral information that might be in your scene. It'd also require you to rebuild your databases. W.r.t VirtualTerrainProject, unless it now start fully support paged databases and double matrices I would suggest you give it a miss as it'll complicate your application a lot whilst curtailing the scalability of the OSG. Robert. On Tue, Apr 14, 2009 at 4:59 PM, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC <[email protected]> wrote: > Just a quick question for the experts out there… > > > > When I’m flying through my terrain database, I’m seeing a lot of “popping” > as the database pager brings in higher LODs of terrain. My question is, is > there a way to minimize this popping? Is there any geomorphing support in > the way OSG pages in the terrain? If there’s no geomorphing support to > smooth out the LOD transitions across several rendering frames, that would > be a nice feature to have in a future release…J > > > > Thanks in advance… > > -Shayne > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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