Hi Brad, After the releaseGLContext() could you do a osg::discardAllDeletedGLObjects() to make sure the cached GL object handles are all removed, otherwise the new context will think these handles are still valid and can be reused.
Robert. On Thu, Jan 21, 2010 at 1:36 AM, Christiansen, Brad <[email protected]> wrote: > Hi, > > I forgot to mention that I am also calling releaseGLObjects on the > viewer. > > i.e. When I show the window, if I already have a GraphicsWindows I call: > > if(m_gw.valid()) { > m_viewer->releaseGLObjects(); > m_gw->close(); > } > > I then create a new graphics window and set it on the viewer: > > osg::ref_ptr<osg::Referenced> windata = new > osgViewer::GraphicsWindowWin32::WindowData(hwnd, true); > osg::ref_ptr<osg::GraphicsContext::Traits> traits = new > osg::GraphicsContext::Traits; > traits->inheritedWindowData = windata; > //.. all the other traits setting here > > osg::ref_ptr<osgViewer::GraphicsWindowWin32> window = new > osgViewer::GraphicsWindowWin32(traits); > m_gw = window; > window->realize(); > osg::GraphicsContext* gc = window; > m_viewer->getCamera()->setGraphicsContext(gc); > > Cheers, > > Brad > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > Christiansen, Brad > Sent: Thursday, 21 January 2010 9:30 AM > To: OpenSceneGraph Users > Subject: [osg-users] Changing the window of a Viewer > > Hi, > > I have setup a viewer using an existing window (supplying the HWND to a > GraphicsWindowWin32). In my application, this window can be toggled on > and off. If I do nothing when this happens the GraphicsWindowWin32 > complains of an invalid handle when swapping buffers. > > As such, I wish to recreate the context when the window is displayed. I > have tried simply calling close on the on the old GraphicsWindowWin32 > and then creating a new instance with the new window handle and setting > this on the viewer (osgViewer::Viewer). When I do this, sometimes my > model displays with corrupt textures, but in all cases I get a 'GL is > out of memory' error. I am guessing that I am not cleaning up the old > context and its associated Texture Objects etc correctly. > > My question is, what is the correct way of doing this? What methods do I > need to call to clean up all the old GL objects and make sure new ones > are created? Also, do I need to call these methods while the windows > handle is still valid, and do I need to do this on the rendering thread. > > Cheers, > > Brad > > > > DISCLAIMER:------------------------------------------------------------- > -------------- > This e-mail transmission and any documents, files and previous e-mail > messages > attached to it are private and confidential. They may contain > proprietary or copyright > material or information that is subject to legal professional privilege. > They are for > the use of the intended recipient only. Any unauthorised viewing, use, > disclosure, > copying, alteration, storage or distribution of, or reliance on, this > message is > strictly prohibited. No part may be reproduced, adapted or transmitted > without the > written permission of the owner. 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