On Aug 2, 2010, at 5:40 AM, Dirk Reiners wrote: > > Hi Patrick, > > On 07/30/2010 05:45 PM, Carsten Neumann wrote: >> >> hm, can you run your application through a GL debugger to get OpenGL call >> logs >> for the cases with and without active GrabForeground? >> Perhaps diff'ing them reveals something useful to go by. >> One other question, are you changing the value of Window::sfDrawMode_, i.e. >> are >> you using the parallel drawer or the default sequential drawer? > > That would be the interesting question... Some objects disappearing could be > a > timing issue, in which one thread steals the context from the draw thread. Do > you have a way to run things sequentially?
As far as I can tell, the other threads are idle while this capture operation happens--or at least that's what our profiling tool says. It only gives us profiling information about what we mark to be collected, so it is possible that there is other code executing that is not being profiled. However, the only other thing that might be doing any OpenSG work is the background loader, and we have extensive performance tracking there. The last thing reported from it is many frames before the capture occurs. I am making the OSG::Window::render() call in the main frame loop, and the profiler confirms that there is a drop in rendering performance while that extra render happens. I added an OSG::commitChanges() call just before the OSG::Window::render() call, but that hasn't made a difference. I forgot to mention that this is with OpenSG 2 code that is circa October 2009. I don't know if there have been any bug fixes applied since then that would relate to this, but given the simplicity of OSG::GrabForeground, it seems like something that would not require a lot of maintenance. I have a feeling that I have done something incorrectly in setting up the scene to be captured, but I cannot identify what it might be. -Patrick -- Patrick L. Hartling Senior Software Engineer, Priority 5 http://www.priority5.com/ The information transmitted in this communication is intended only for the person or entity to which it is addressed and contains proprietary material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please destroy any copies, contact the sender and delete the material from any computer. ------------------------------------------------------------------------------ The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://p.sf.net/sfu/dev2dev-palm _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
