I figured I'd jump in and respond to this before Robert did, so he doesn't lose his mind and go crazy. :) We get messages like this a lot, but they're often by non-native English speakers, and I guess some amount of tolerance is given to them...
On Fri, 2007-10-26 at 20:20 +0000, Shawn Cook wrote: > Hi, I'm back to whine about my performance issues in OpenSceneGraph. > Look at this main loop: I would encourage you to read this document: http://www.catb.org/~esr/faqs/smart-questions.html Beginning your message like that is the best way to ensure no one bothers answering it... > while( !viewer.done() && !timeToDie) > { > //*** SLOW CODE *** > osg::Vec3Array *vecs = dynamic_cast<osg::Vec3Array*> > (geom->getVertexArray()); > if( vecs ) { > for(int i=0; i<test_load_resolution; i++ ){ > for(int j=0; j<test_load_resolution; j++ ) { > float left = unit_size*i; > float right = unit_size*(i+1); > float bottom = unit_size*j; > float top = unit_size*(j+1); > int quadIndex = (i*4*test_load_resolution) + (j*4); > vecs->at(quadIndex+0).set(left, bottom, 0.0); > vecs->at(quadIndex+1).set(right, bottom, 0.0); > vecs->at(quadIndex+2).set(right, top, 0.0); > vecs->at(quadIndex+3).set(left, top, 0.0); > } > } > } > //^^^ SLOW CODE ^^^^ > viewer.sync(); > viewer.update(); > viewer.frame(); > } > > When I comment out "SLOW CODE" my framerate is a few hundred frames a > second. But when I uncomment "SLOW CODE" my frame rate won't go above > 20fps. I need dynamic vertices in my application - how do I acheive > this with OpenSceneGraph? Without understanding more of exactly what you're trying to do I doubt anyone can help. The code above is impossible to speculate on without some additional context... > Thanks folks! > > -Shawn > > > ______________________________________________________________________ > Windows Live Hotmail and Microsoft Office Outlook – together at last. > Get it now! > _______________________________________________ > 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
