Ok, thanks for looking into it. I'll make a simple compiling program that causes the crash. I extracted the code snippet from my own program. I will check the example under ubuntu as well.
Nico On Wed, Nov 25, 2009 at 3:25 PM, Robert Osfield <[email protected]>wrote: > Hio Nico, > > I've attempted to reproduce the cash using a scene graph that I force > to use VBO's, and the run the viewer for a frame() or run() then > destruct the viewer, then the scene graph - along the lines of your > code fragment, but it runs reliable on my Kubuntu 9.04 64bit system > with svn/trunk. > > Here's lies the problem with using code fragments - I just don't know > if it you did something different in your code to what I've put > together and this accounts for the difference we are seeing, or > whether it's just thread timing/unitialized variable/different > OS/different compiler/different rev of the OSG. Compilable examples > that can be tried on both systems eradicate many of the variables as > to the cause of the problems, I know this is more work, but it's far > quicker for trying to isolate bugs. > > Until I can reproduce the problem there isn't too much I can do at my > end. What I'll now do is look at J.P. example to see if that help > track down one or more of the problems with the VBO clean up. Whether > any solution to J.P's observed problems will address the one you are > observing I can't say without being able to reproduce your problem. > > Robert. > > On Tue, Nov 24, 2009 at 8:18 PM, Nico Kruithof <[email protected]> wrote: > > Hello, > > When a node with VBO's enabled outlives the lifetime of it's renderer, I > get > > an access violation in GLBufferObjectSet::orphan when I try to destroy > the > > node. I tried to write down the scenario: > > using namespace osg; > > ref_ptr<Node> node(new Node); > > ref_ptr<Geometry> geom(new osg::Geometry); > > // ... fill geom > > geom->setUseVertexBufferObjects(true); > > node->addDrawable(geom.get()); > > { > > ref_ptr<osgViewer::Viewer> viewer(new osgViewer::Viewer()); > > viewer->setSceneData(node); > > viewer->frame(); > > // render for a while > > viewer = NULL; // The viewer is destroyed here > > } > > node = NULL; // This gives the access violation. > > > > Now if I don't set "geom->setUseVertexBufferObjects(true);" everything > works > > fine. Do you still need a valid render context or a valid viewer to be > able > > to clean up the VBO's? > > Nico > > _______________________________________________ > > 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 >
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