Just as a follow-up question on this topic, what settings are included in the DEFAULT_CULLING?
Thanks, -Shayne -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Thursday, June 23, 2011 3:30 PM To: OpenSceneGraph Users Subject: Re: [osg-users] FAR_PLANE_CULLING On 6/23/2011 3:14 PM, Terry Welsh wrote: > Haven't looked at this in a while, but I was just performance tuning > an old app and got a significant boost by adding in > CullSettings::FAR_PLANE_CULLING. Why isn't this included as part of > DEFAULT_CULLING? I don't have any hard data, but I suspect the > performance penalty for culling with the far plane when you shouldn't > isn't near as bad as ignoring the far plane when you should use it. > (I suspect NEAR_PLANE_CULLING is not as useful for most apps.) Hi Terry -- Do you have auto-compute near/far turned on? If so, there shouldn't be anything behind the far plane. In that case, it doesn't make sense for the CullVisitor to check every single Drawable's bounding box against a plane that it can't possibly be clipped by. For this reason, culling against the far plane is off by default. If you disable auto-compute near/far, and you expect part of your scene to be behind the far plane, then you should enable far plane culling. I'd expect to see a performance boost in such a case. Hope that helps, -Paul _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
