Hi Paul, we are handling it like the 'perContextData' of StateAttributes gets handled, assuming that we don't have multiple threads per context.
Like Robert pointed out some data can be created on the fly - which we are doing with context- and view-dependend statesets. Richard Schmidt -----Ursprüngliche Nachricht----- Von: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] Im Auftrag von Paul Martz Gesendet: Donnerstag, 23. April 2009 22:30 An: 'OpenSceneGraph Users' Betreff: Re: [osg-users] Modifying SG based on viewpoint location Yeah, what does "modify" mean, that's the question. I have a client who is modifying the scene graph in a number of ways during the cull traversal and is therefore only able to run SingleThreaded. I'm still digging in to find out exactly what it is they are doing that isn't thread safe (even the client isn't exactly sure, or isn't able to spell it out precisely for some reason), but it seems to be some type of viewpoint-dependent LOD-like modification. In the meantime, I wanted to poll the community for thread-safe alternatives. So I want to thank all that have replied, especially Robert for telling me how those OSG classes handle this requirement. At some point, I'll summarize all this into some kind of document or posting, so that people don't go down the non-thread safe path in the future. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859 9466 -----Original Message----- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Chris 'Xenon' Hanson Sent: Thursday, April 23, 2009 10:15 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Modifying SG based on viewpoint location Paul Martz wrote: > Hi all -- I'd like to see how members of the community are handling > this fairly common OSG problem. > Imagine that your app needs to modify the scene graph I guess the important question is, what kind of modifications exactly? -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
