Hi Paul It is exactly the problem. I've done some tests with the depth test, and I'm sure that what you think is the problem. So now, how to solve it ? If I put "depth = new osg::Depth(osg::Depth::ALWAYS, 0.0, 1.0);" My plane are always visible, but nothing can hide them (mountains for example...)
Any suggestion or Idea ? Thanks Regards, Vincent. 2008/9/16 Paul Martz <[EMAIL PROTECTED]> > If the polygons are very close to the ground and your eye is quite > distant, then it sounds like it's losing the depth test. > -Paul > > > ------------------------------ > *From:* [EMAIL PROTECTED] [mailto: > [EMAIL PROTECTED] *On Behalf Of *Vincent > Bourdier > *Sent:* Tuesday, September 16, 2008 5:22 AM > *To:* osg > *Subject:* [osg-users] Culling problem > > Hi all, > > I have a strange problem : Nodes are moving (PAT->LOD->Node.ive) depending > on a PAT and all the PATs have the same group for parent. > Theses nodes (planes) have the ground under them but, sometimes the planes > are hidden under the ground. > > It happens when the camera it on a top-position (not side or face ) of the > planes and it depend on the point looked by the camera. Just modifying > camera's orientation make then appear. > If the camera if near of the plane nothing happen. > > I have checked Z position, but it do not changed anormaly. I only see a > culling problem to have this problem. > > Do you have already encountered something similar ? > How to solve this problem ? > > > See attached files to understand better what it looks like. > > thanks, > > Regards > > Vincent. > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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