Can you post a .osg file that reproduces the issue? -Paul
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Michele Bosi > Sent: Friday, May 23, 2008 8:59 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] Small object frustum culling > > Thank you Robert, > v-sync is off, I get around 90-100 FPS, when enabled OSG stats I get > 3.4 for "cull" and 6.4 for "draw", also in this case the > frame rate basically does not change but floats around the > same range 90-100. > Since the performances are already very good I wont dig more > into the "problem", which might not be a "problem" but rather > a lack of understanding of what's going on. > > Another thing: I instance a single Geometry (my quad > billboard) then add it 4000 times to a Billboard node. I > looked in the archives for "quadtree" but coulnd't find any > info. How can I use the quadtrees you mentioned with OSG? Did > you mean quadtrees to speedup frustum culling or a particular > parent/child layout for OSG nodes? > > Thanks, > Michele > > On Fri, May 23, 2008 at 4:05 PM, Robert Osfield > <[EMAIL PROTECTED]> wrote: > > Hi Michele, > > > > The OSG does view frustum culling by default, you have to explictly > > turn it off. The same applies to small feature culling it's on by > > default. > > > > As for your FPS not changing when objects move off screen, is vsync? > > > > Hows about enabling OSG stats? This will tell you what the > bottleneck. > > > > Also with your scene graph, make sure you build a quad tree > to store > > all those billboards, and avoid large flat node contains lots of > > children/drawables. > > > > Robert. > > > > On Fri, May 23, 2008 at 3:01 PM, Michele Bosi > <[EMAIL PROTECTED]> wrote: > >> Hi all, > >> I have a scene with 4000 billboarded quads to display and I just > >> noticed that OSG might not perform frustum culling on them since > >> Fraps tells me that the FPS remains the same even when > many of those > >> quads are out of the screen. > >> > >> Is there a way to enable frustum culling? or maybe OSG doesn't > >> perform frustum culling for small/simple objects? > >> > >> I am currently using OSG 2.2 / WinXP / MinGW and the > application I am > >> using manages the camera with a Trackball manipulator, in > case this > >> has anything to do with the problem... > >> > >> Thanks, > >> Michele > >> _______________________________________________ > >> 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 > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-opensce negraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
