Drolet, Frederic wrote on 2010-03-12: > osg::ref_ptr<osg::StateSet> lStateSet = mGeometrie- >> getOrCreateStateSet(); > > lStateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
OpenGL performance is very sensitive to state changes, so it is a good idea to minimize them as much as possible. OSG groups Drawables with the same state as part of this (the exception is transparent drawables that require a certain ordering to render correctly, so they can't be grouped), but it just compares the StateSet pointers rather than a (much more expensive) comparison of what OpenGL state the StateSet pointers represent. Therefore, if you have a bunch of StateSets that are identical, like you seem to have, it is a really good idea to just use the same StateSet object everywhere you need it, rather than create a new instance every time. HTH, -- Bryan Thrall FlightSafety International bryan.thr...@flightsafety.com _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
