Hi, I converted the model to an ascii osg file, and in the file, there exists, -12 groups -59 matrix transforms some holding totally 20 animationpathcallbacks -40 geodes -4 statesets, one of them holding 1 material and 1 textureunit and 11 geodes referencing this stateset
I tested the model with osgviewer, with 8 models the statistics are as follows, cull time: 34.5 draw time: 40.5 frame rate:11.5 In this case, the cull time does not increase 5 ms with the addition of 1 model. But for 10 models viewed in osgViewer, cull time: 110.5 draw time: 62.5 frame rate:4.27 yet in my application, when there exist a single model, on the addition of a second model, the cull time increases as 5 ms. Thanks in advance --- Gordon Tomlinson <[EMAIL PROTECTED]> wrote: > 5ms for a 1500 polys is a lot, > > are there a lot of different textures, colours, > materials on the models ?, > large textures sizes ? > > Are there degenerate polygons etc. > > do you see the same hit is you run osgview with one > of the problematic cases > ? > > Could you post an example of the model the exhibits > the problems > > If you run you model through optimize and write it > out as an IVE or even an > ASCII OSG format do you still see the same hit ? > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > On Behalf Of Robert > Osfield > Sent: Monday, February 25, 2008 9:25 AM > To: OpenSceneGraph Users > Subject: Re: [osg-users] osgUtil::cullvisitor > > Hi, > > The most common problem with performance is a poorly > conditioned scene > graph, so this is the place to look first rather > assuming there is a > problem in the core OSG that needs a major rewrite. > The OSG is used > very widely with plenty of people pushing it as hard > if not harder than you > are and still hitting a solid 60Hz. > > Now an increase in cull time of 5ms with adding a > single model is seriously > out of keeping, so this really needs to be look at > in isolation - what > exactly is in the model? What update, cull and draw > times do you get for > each of these models? > > Robert. > > On Mon, Feb 25, 2008 at 1:36 PM, guher b > <[EMAIL PROTECTED]> wrote: > > Hi, > > > > I am using a standard graphics card for todays, > and rendering a 100 > > mb (s3tc textured) terrain database. > > The cull traversal time increases too much when > I add animated > > models (osg model with update callback) (each > having 1400-1500 > > polygons) to the scene, so that the frame rate > drops too much. Each > > addition of model makes 5 msec increase in cull > traversal time. I > > tried to optimize the cull time with > reimplementing the cull > > visitor, however, I could not achieve any > improvements on this issue > > yet (the problem is that the cull visitor takes > too much time with > > the addition of models, so that the problem is > cpu bound, the draw > > time is not bad), Does anybody know how could i > carry the load from > > cpu to graphics card in cullvisitor? > > > > Thanks a heap > > > > Thanks > > > > > > > > > > > > > ______________________________________________________________________ > > ______________ > > Be a better friend, newshound, and > > know-it-all with Yahoo! Mobile. Try it now. > > > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > > _______________________________________________ > > 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-openscenegraph.org > ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
