HI Ross, OSG 2.x and osgViewer have much better support for handling of contextID when sharing contexts and opening and closing contexts, you shouldn't need to manually manage contextID's when working with osgViewer so perhaps this is the route of the problem.
Robert. On Jan 3, 2008 6:57 PM, Ross Anderson <[EMAIL PROTECTED]> wrote: > Hello, > > I have a GUI application that recycles ContextIDs. After recently > porting the app to use osgViewer in place of SceneView I have a puzzling > issue that involves internal caching of texture objects. I have a > Texture2D instance shared between two or more contexts in different > windows. If one of the contexts is closed and a new one opened in it's > place (using the same context ID), the texture is no longer valid in the > new context (objects appear white and the OpenGL error 'invalid > operation' appears in the console). Using an OpenGL debugger indicates > that the error occurs in osg::Texture::applyTexImage2D_subload when > glTexSubImage2D is called. > > I can work around the problem by explicitly calling dirtyTextureObject() > on every texture every time a context is being closed down, but I would > imagine there is a better way since this is quite messy. I have tried a > suggestion made in a previous thread which is to call this upon context > closure: > > viewer->getSceneData()->releaseGLObjects( graphicsContext->getState() ); > graphicsContext->getState()->reset(); > osg::flushAllDeletedGLObjects( > graphicsContext->getState()->getContextID() ); > > Unfortunately this does not solve the problem. Any ideas? > > --------------- > Ross Anderson > [EMAIL PROTECTED] > Group 106 - Active Optical Systems > MIT Lincoln Laboratory > (781) 981-3344 > > _______________________________________________ > 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
