Re: [osg-users] PagedLODs under an RTT camera - how to use the proper viewpoint?
Robert, That works, thank you! However... I found that the ClusterCullingCallback doesn't cooperate. It looks like the CCC uses getEyePoint() to do its test. I changed it to use getViewPoint() and it seems to work properly. Let me know whether you concur, and if so I will submit the change. Glenn Waldron / Pelican Mapping / @glennwaldron On Wed, Oct 5, 2011 at 3:48 AM, Robert Osfield wrote: > HI Glenn, > > The osg::Camera/RTT mechanism has explict support for inheriting the > parents view point for the purpose of LOD calculations. Simple use: > > camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF_INHERIT_VIEWPOINT); > > This is what osgShadow does for making sure the shadows use the same > LOD's as the master camera. > > Robert. > > > On Tue, Oct 4, 2011 at 10:10 PM, Glenn Waldron wrote: > > Hi friends, > > I have a graph under an RTT camera. That graph contains PagedLODs. Of > > course, I want the cull traversal to load the PagedLODs based on my > "main" > > scene camera, and NOT based on the RTT camera's location. > > I've tried a couple of things: > > 1) Calling CullVisitor::pushReferenceViewPoint on the RTT subgraph ... to > no > > effect > > 2) Creating a new RenderStage and traversing the RTT subgraph a second > time > > with it; that works in terms of properly activating the PagedLODs, but > not > > for rendering - the still switch in/out relative to the RTT camera. > > I'd appreciate some pointers on this one. Thanks. > > > > > Glenn Waldron / Pelican Mapping / @glennwaldron > > > > ___ > > 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
Re: [osg-users] PagedLODs under an RTT camera - how to use the proper viewpoint?
HI Glenn, The osg::Camera/RTT mechanism has explict support for inheriting the parents view point for the purpose of LOD calculations. Simple use: camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF_INHERIT_VIEWPOINT); This is what osgShadow does for making sure the shadows use the same LOD's as the master camera. Robert. On Tue, Oct 4, 2011 at 10:10 PM, Glenn Waldron wrote: > Hi friends, > I have a graph under an RTT camera. That graph contains PagedLODs. Of > course, I want the cull traversal to load the PagedLODs based on my "main" > scene camera, and NOT based on the RTT camera's location. > I've tried a couple of things: > 1) Calling CullVisitor::pushReferenceViewPoint on the RTT subgraph ... to no > effect > 2) Creating a new RenderStage and traversing the RTT subgraph a second time > with it; that works in terms of properly activating the PagedLODs, but not > for rendering - the still switch in/out relative to the RTT camera. > I'd appreciate some pointers on this one. Thanks. > > Glenn Waldron / Pelican Mapping / @glennwaldron > > ___ > 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
Re: [osg-users] PagedLODs under an RTT camera - how to use the proper viewpoint?
On 10/4/2011 3:10 PM, Glenn Waldron wrote: > Hi friends, > I have a graph under an RTT camera. That graph contains PagedLODs. Of course, > I want the > cull traversal to load the PagedLODs based on my "main" scene camera, and NOT > based on the > RTT camera's location. > I've tried a couple of things: > 1) Calling CullVisitor::pushReferenceViewPoint on the RTT subgraph ... to no > effect > 2) Creating a new RenderStage and traversing the RTT subgraph a second time > with it; that > works in terms of properly activating the PagedLODs, but not for rendering - > the still > switch in/out relative to the RTT camera. > I'd appreciate some pointers on this one. Thanks. Wouldn't shadowmap cameras face the same issue hand have already solved this? Maybe the technique can be inferred from there. -- Chris 'Xenon' Hanson, omo sanza lettere. xe...@alphapixel.com http://www.alphapixel.com/ Digital Imaging. OpenGL. Scene Graphs. GIS. GPS. Training. Consulting. Contracting. "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] PagedLODs under an RTT camera - how to use the proper viewpoint?
Hi friends, I have a graph under an RTT camera. That graph contains PagedLODs. Of course, I want the cull traversal to load the PagedLODs based on my "main" scene camera, and NOT based on the RTT camera's location. I've tried a couple of things: 1) Calling CullVisitor::pushReferenceViewPoint on the RTT subgraph ... to no effect 2) Creating a new RenderStage and traversing the RTT subgraph a second time with it; that works in terms of properly activating the PagedLODs, but not for rendering - the still switch in/out relative to the RTT camera. I'd appreciate some pointers on this one. Thanks. Glenn Waldron / Pelican Mapping / @glennwaldron ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
