Hi Uli, Am 02.05.10 11:09, schrieb Ulrich von Zadow:
> As an aside, I'm Uli, not Andreas, and - I believe we spent some time > together at Art+Com :-). Sorry for the wrong name, too much mulittasking on my end, you are right, we spent some time together there :) > This is the first call: > > #0 0x00688bba in osgViewer::PixelBufferCarbon::closeImplementation () > #1 0x092a012f in osg::GraphicsContext::close () > #2 0x0066f910 in osgViewer::Viewer::~Viewer () > #3 0x08c65eb8 in avg::OSGNode::disconnect (this=0x1ef447d0, > bKill=4098347009) at /usr/local/include/osg/Referenced:183 > > and this the second: > > #0 0x00688bba in osgViewer::PixelBufferCarbon::closeImplementation () > #1 0x092a012f in osg::GraphicsContext::close () at > function_template.hpp:1010 > #2 0x00688e23 in osgViewer::PixelBufferCarbon::~PixelBufferCarbon () > #3 0x0920e825 in osg::Referenced::unref () at function_template.hpp:1010 > #4 0x092049c0 in osg::ref_ptr<osg::GraphicsContext>::~ref_ptr () at > function_template.hpp:1010 > #5 0x09201aff in osg::Camera::~Camera () at function_template.hpp:1010 > #6 0x08c65ed8 in avg::OSGNode::disconnect (this=0x1ef447d0, > bKill=4098347009) at /usr/local/include/osg/Referenced:183 > > The setup looks like this: The context is created on a pbuffer, but this > pbuffer is never rendered to and doesn't have a camera. All rendering > happens in an FBO. The camera in the second stack trace isn't attached > to the pbuffer at all - it's rendering to the FBO. AFAIK a camera needs a graphics context to do any open gl rendering. The internals of osgViewer take care of this. Maybe there's a bug in GraphicsContext::close where it calls closeImplementation regardless of the state of the context. PixelBufferCarbon is not tested that well, and after looking into the other pbuffer-implementations i think you have to take into acount that closeImplementation may be called more than once. I'll submit the patch to osg-submission so it gets included in new versions of osg. But be aware that the carbon backend is a dead end (deprecated by apple, 32bit only), the future is the new cocoa backend (which is IMHO also part of 2.8.3) cheers, Stephan _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
