Search the forums for things like LOD and Instancing, look at some of the examples like osgforest
Make sure you build a balanced quad tree Scene graph tree ( again a search of the archive and Google will yield plenty on balancing trees) See http://www.vis-sim.com/imgdp/vp_db_partion_01b.jpg a simple example you don't want the bottom structure, you want the top but also with more depth Gordon Product Manager 3d __________________________________________________________ Gordon Tomlinson Email : gtomlinson @ overwatch.textron.com __________________________________________________________ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Maurizio Lodo Sent: Tuesday, September 29, 2009 2:48 AM To: [email protected] Subject: [osg-users] how to improve frame rate of my scene with lots ofcubes and cylinders? Hi, I suppose you get many messages like this, so I apologise in advance. My scene is made of cubes and cylinders generated using ShapeDrawable. First I generate a large "cell" made of 1000 large cubes and up to 3000 cylinders and then a smaller "cell" made of the same number of elements, just smaller. Then I use osg::PositionAttitudeTransform to place several (16 to 64) of these smaller cells inside one of the cubes of the larger cell. Unfortunately this seems to cause the frame rate to drop to about 8 - 9, while the scene runs at about 120fps when section with the small cells goes out of the screen. I followed a suggestion I read on this forum and I tried to remove the use of osg::PositionAttitudeTransform and draw all the elements of the several smaller cells but this only makes the program take longer to load, but once it's loaded it still runs at about the same frame rate. I am just a beginner and I was wondering if any of you clever people can give me a pointer in the right direction or indicate some useful documents that my help me make this run a little faster. Thank you very much in advance! Cheers, Maurizio ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17696#17696 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
