Re: [osg-users] Composite Viewer with TXP database works?
We've found that if you play with the database pager settings (look in DatabasePager.cpp), you can change the performance of terrapage databases significantly. The TXP pager code on the trunk has some optimizations in it that speed it up quite a bit. Plus it runs the optimizer, although, we found a database recently that takes a long time to optimize, which is sort of counter-productive. We took apps running at 20-30 fps to running at over 60Hz. -Original Message- From: [EMAIL PROTECTED] on behalf of Mielcarek, Donn Sent: Thu 6/19/2008 9:41 AM To: OpenSceneGraph Users Subject: RE: [osg-users] Composite Viewer with TXP database works? Robert, It's helped, but hasn't solved the problem. It doesn't crash right away, but it eventually will hit a random point and the program dies. Also, when the second window is open, it absolutely kills the frame rate from 30 hz to about 10 hz. I've run it SingleThreaded and haven't been able to get it to die, but again it's so slow as to be unusable. Don't you just hate these kind of problems? donn _ From: [EMAIL PROTECTED] on behalf of Robert Osfield Sent: Mon 6/16/2008 9:18 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Composite Viewer with TXP database works? Hi Donn, I've done some testing and review of the txp plugin, and it looks like both the basic terrapage code and OSG code on top of it isn't thread safe w.r.t multiple camera positions/cull traversals. To prevent problems I've added a mutex into the TXPNode class that the txp plugin decorates the txp subgraph. So far in testing this looks to have resolved the crash. Could you try the SVN version of the OSG? Robert. ___ 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] Composite Viewer with TXP database works?
Hi Donn, On Thu, Jun 19, 2008 at 2:41 PM, Mielcarek, Donn [EMAIL PROTECTED] wrote: It's helped, but hasn't solved the problem. It doesn't crash right away, but it eventually will hit a random point and the program dies. Could you try to get a stack trace of the location of the crash. Also, when the second window is open, it absolutely kills the frame rate from 30 hz to about 10 hz. Make sure the OSG is built optimized, this makes a huge difference to performance. However, running a second window will up both the amount of rendering down and increase the amount of memory down on the GPU required, so if you are close to breaking memory limits then a bit hit on performance perhaps isn't too surprising. You could try a different OS to see if that helps, as memory management/threading differences might make a difference to performance. Finally, it looks like the basic TerraPage looks designed for a single view point, rather than multiple view points, so it may well end up thrashing between the viewpoints than might otherwise occur. To fix this you'd need to chat to the Terrex engineers. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Composite Viewer with TXP database works?
Robert, It's helped, but hasn't solved the problem. It doesn't crash right away, but it eventually will hit a random point and the program dies. Also, when the second window is open, it absolutely kills the frame rate from 30 hz to about 10 hz. I've run it SingleThreaded and haven't been able to get it to die, but again it's so slow as to be unusable. Don't you just hate these kind of problems? donn From: [EMAIL PROTECTED] on behalf of Robert Osfield Sent: Mon 6/16/2008 9:18 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Composite Viewer with TXP database works? Hi Donn, I've done some testing and review of the txp plugin, and it looks like both the basic terrapage code and OSG code on top of it isn't thread safe w.r.t multiple camera positions/cull traversals. To prevent problems I've added a mutex into the TXPNode class that the txp plugin decorates the txp subgraph. So far in testing this looks to have resolved the crash. Could you try the SVN version of the OSG? Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org winmail.dat___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Composite Viewer with TXP database works?
Hi Donn, I've just run osgthirdpersonview on a txp database and it immediately crashed, I also tried a database generated by VirtualPlanetBuilder and while it didn't crash right away it did eventually hang. I haven't done any debugging yet to divine what might be amiss, but at least I can confirm that the problem is reproducible. In experimentation change the threading model to SingleThreaded did allow the osgthirdpersonview to work. Could you confirm this at your end by doing: export OSG_THREADING=SingleThreaded Or similar env var setting, then run your app/osgthirdpersonview to see how you get on. Robert. On Thu, Jun 12, 2008 at 11:32 PM, Mielcarek, Donn [EMAIL PROTECTED] wrote: Has anyone been using a Composite Viewer with multiple views and a TXP database? I have a viewer with a second view that sits in one place within the database. I can add whatever I want to the second view. It works fine unless I call: view2-setSceneData(databasenodes); where databasenodes is a TXP database. The scene comes up in the second view until I start to fly around within the database, then it dies. I'm thinking the TXP plugin has a problem maintaining two views. d ___ 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] Composite Viewer with TXP database works?
Hi Donn, I've done some testing and review of the txp plugin, and it looks like both the basic terrapage code and OSG code on top of it isn't thread safe w.r.t multiple camera positions/cull traversals. To prevent problems I've added a mutex into the TXPNode class that the txp plugin decorates the txp subgraph. So far in testing this looks to have resolved the crash. Could you try the SVN version of the OSG? Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Composite Viewer with TXP database works?
Unfortunately, I'm out of the office until Thursday. I'll test it first thing then and let you know how it works out. Donn -Original Message- From: [EMAIL PROTECTED] on behalf of Robert Osfield Sent: Mon 6/16/2008 9:18 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Composite Viewer with TXP database works? Hi Donn, I've done some testing and review of the txp plugin, and it looks like both the basic terrapage code and OSG code on top of it isn't thread safe w.r.t multiple camera positions/cull traversals. To prevent problems I've added a mutex into the TXPNode class that the txp plugin decorates the txp subgraph. So far in testing this looks to have resolved the crash. Could you try the SVN version of the OSG? Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org winmail.dat___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Composite Viewer with TXP database works?
Has anyone been using a Composite Viewer with multiple views and a TXP database? I have a viewer with a second view that sits in one place within the database. I can add whatever I want to the second view. It works fine unless I call: view2-setSceneData(databasenodes); where databasenodes is a TXP database. The scene comes up in the second view until I start to fly around within the database, then it dies. I'm thinking the TXP plugin has a problem maintaining two views. d ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
