Hi Tom, that was what I was to propose to Colli, to convert the OpenFlight XRefs into PagedLODs. If there is a master.flt the database is probably coming from TerraVista and it has tiled structure. Colli, let me know if the posted link resolved your problem. OpenSceneGraph can render large databases (TBs) but they need to be in pageable format.
Nick http://www.linkedin.com/in/tnikolov Sent from Benoni, Gauteng, South Africa On Tue, Aug 25, 2009 at 10:09 PM, Jolley, Thomas P < [email protected]> wrote: > Hi Nick, > > You may want to search on master.flt in the mail archive. The first one > that came up looks like it may help you. > > > http://www.mail-archive.com/[email protected]/msg05439.html > > ---- > Tom Jolley > > > ------------------------------ > *From:* Trajce Nikolov [mailto:[email protected]] > *Sent:* Tuesday, August 25, 2009 2:53 PM > *To:* OpenSceneGraph Users > *Subject:* Re: [osg-users] How to read big openscenegraph files? > > Hi, > can you tell more about the openFlight database? What was the tool to > generate the file? Can you see something like master.flt among the files? > > Nick > > > > > On Tue, Aug 25, 2009 at 9:44 PM, Paul Martz <[email protected]>wrote: > >> The problem is likely the size of the resulting scene graph, and therefore >> only indirectly related to the size of the actual .flt file. >> >> One problem I have noted with the .flt loader is that it always keeps the >> entire vertex palette in memory during a file load. This can consume a >> tremendous amount of RAM. The .flt plugin could be modified to keep the >> vertex palette resident on the hard disk, using seek() to get vertices as >> they are needed. This would have a horrendously negative impact on load >> time, so should probably be an Option. Nonetheless, if the actual issue is >> the size of your resulting scene graph, then even this optimization might >> not help you. >> >> The bottom line is that your database is too big. You should work with >> your modeler and developer staff to come up with some kind of paged DB >> scheme as Gordon mentioned. >> >> Paul Martz >> Skew Matrix Software LLC >> *http://www.skew-matrix.com* <http://www.skew-matrix.com/> >> +1 303 859 9466 >> >> >> Colli Bann wrote: >> >> Hi, >> >> i have a problem with big (> 5GigaBytes) flt Files: i can´t read them. When >> i try to read it with the osgDB, i takes 30 minutes and then it finishes >> with "bad alloc" error, consuming more than 90% of the memory. Is there a >> way to read it, without having the whole file in memory? "convert" is not >> able to convert such a file in, say, smaller ive format. >> >> It seems, like it is not possible to read such big databases? >> >> Thank you! >> >> Cheers, >> Colli >> >> ------------------ >> Read this topic online >> here:http://forum.openscenegraph.org/viewtopic.php?p=16658#16658 >> >> >> >> >> >> _______________________________________________ >> osg-users mailing >> [email protected]http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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