Hi Tom, I haven't heard of assigning an osg::Material as a cause of memory growth before, and what you are doing sounds like it's something that has been done with the OSG for over a decade, so my guess is that the basic should be working just fine. The three aspects that could be a cause are a bug in the OpenGL driver, or a problem with the memory usage tool reporting an problem, something in your own set up of the material that is causing a leak.
For the later you'd need to be creating a new osg::Material quite regularily and not using a ref_ptr<> to manage it, the OSG itself uses ref_ptr<> consistently so once you assign it to the scene graph it should just safely look after itself. There isn't really a way for me to dig any further into the problem on your system, try moving to another machine with a different graphics card/driver/OS to see if that affects the problem you are witnessing. Robert. On Mon, Sep 20, 2010 at 10:06 PM, Tom Pearce <[email protected]> wrote: > Hi OSGers, > > I'm using setAttribute(osg::Material* mat) on a matrix transform to control > the color of an object (just a simple sphere for now, nothing fancy). Just > using task manager in windows to watch process memory usage, I noticed that > upon adding an object to the scene, the memory usage would start to creep > upward. Thinking this was a leak of some kind in my application I looked > into it further and found that the creep (~20kB/sec) was dependent on calling > getOrCreateStateSet()->setAttribute(Material) for the first time - If I never > set a material, the memory usage stays constant. When I wait for a key press > and then set the material, the creep starts right away. If I remove the > node, the usage stops increasing but does not decrease. Finally, if I just > let it run, after a while (~500kB worth) the memory usage plateaus and is > steady. > > I'm wondering if this something I should be worried about or not moving > forward, or if that just happens and it isn't really an issue... either way I > wouldn't mind knowing what's going on. > > Thank you! > > Tom > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=31866#31866 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
