Hi, I tried osgocclusionquery example with a city model we have and observed that it can reduce the number of rendered objects significantly.
However, osgocclusionquery example can not make parallel rendering. I tried with all threading modes and saw that draw always starts *after* cull is finished. As a result, the performance gain from occlusion tests is lost due to serialized rendering pipeline. With osgviewer cull and draw perfectly overlaps. I looked into the code and saw that there are a few setDataVariance( osg::Object::DYNAMIC ) calls in OcclusionQueryNode.cpp. I guess this is the reason why rendering pipeline is not parallel with occlusion queries. Is DYNAMIC data variance a necessity for OccluderQuery? If so, is there a way to use occlusion queries and still make parallel cull & draw. tugkan _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
