|
... The application which plants is based on 2.6 but I thought (apparently not) of having verified SVN sources. Rechecking ... Robert Osfield wrote: 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 __________ Information provenant d'ESET NOD32 Antivirus, version de la base des signatures de virus 3780 (20090120) __________ Le message a été vérifié par ESET NOD32 Antivirus. http://www.eset.com |
_______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
