Hi Lionel, I believe this issue is now fixed. Which version of the OSG are you using?
Robert. On Tue, Jan 20, 2009 at 8:45 AM, Lionel Lagarde <[email protected]> wrote: > Hi, > > We have a scenario editor that is able to create and destroy > osgViewer::Viewer. > When a Viewer is deleted, its graphic context is closed. All the GL objects > used in this context are deleted. > > The osg::View destructor is called after the Viewer destructor (because > osgViewer::Viewer inherits from osg::View). The View deletes its camera. > > The osg::Camera holds a GraphicsOperation (osgViewer::Renderer) which > is deleted here. The renderer destructor unref its osgUtil::SceneView(s). > > The sceneview owns an osgUtil::StateGraph which is deleted here. > > ouch... > > When the state graph is deleted (and if OSG has been compiled with > OSGUTIL_RENDERBACKEND_USE_REF_PTR), the state sets and the drawables > collected in the last culling traversal are deleted. The textures > of the state sets are deleted. And they register their GL object name > to be reused. :'( > > > So, when a new viewer is created with the same context ID (now available), > and the textures of the new scene request a new GL object, OSG try to reuse > a deleted texture object. > > In my case, the application crash because : > - a texture is created (the texture object hasn't been reused because > the match function as failed for all the "to be reused texture objects". > The GL id of this texture is X. But there is a "to be reused texture > object" that has an id of X. > - another texture is created. This texture reuse texture object X. > - a texture created to store a depth component (first texture) is used > to upload RGBA data. :'( ... crash. > > For the moment, I call osg::discardAllDeletedGLObjects(contextID) just > after the viewer destruction. It works. > > I'm searching a place in osg or in osgViewer to insert the GL object > discard. > > Maybe the best is in GraphicsContext::close (discard if the context > is not shared). > > Suggestion ? > > > _______________________________________________ > 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
