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
