Robert, Some more data...
Looks like we're drawing approx 100K tri-strips every frame. The glDrawElements call is the culprit...though I'm still baffled by why it is so much slower with VBOs than in immediate mode. Perhaps the drawing isn't sorted by VBO so that all of the triangles drawn from each VBO are draw in single bind call ? sean _________________________________________________________ Sean Spicer Aqumin (www.aqumin.com) Office....+1.713.781.2121 Mobile...+1.713.447.2706 Fax.......+1.713.781.2123 On Fri, Dec 17, 2010 at 11:37 AM, Sean Spicer <sean.spi...@aqumin.com> wrote: > Hi Robert, > > We are not updating the data frame-to-frame, which is why this is so > baffling. I'm working through the issue with gDebugger now - if you > don't have any suggestions off the top of your head, then I'll start > digging and report back what I find, since I don't have time try and > duplicate the issue outside our app. > > cheers, > > sean > _________________________________________________________ > Sean Spicer > Aqumin (www.aqumin.com) > Office....+1.713.781.2121 > Mobile...+1.713.447.2706 > Fax.......+1.713.781.2123 > > > > On Fri, Dec 17, 2010 at 2:36 AM, Robert Osfield > <robert.osfi...@gmail.com> wrote: >> reproduces the problem you are seeing? >> > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
