I would first begin by using inspection tools as valgrind or the gcc/clang sanitizers, because this looks like a thread synchronization problem.
"Broi, Franco" writes: > Hi, > > I have an application that takes a snapshot of the scene using > setPostDrawCallback(capture), which gets the image and > writes it to a file but on completion setting setPostDrawCallback(NULL) > crashes on the next expose. > > #4 0x00007f681bf08520 in <signal handler called> () at > /lib/x86_64-linux-gnu/libc.so.6 > #5 0x00007f681db87260 in osgUtil::RenderStage::draw(osg::RenderInfo&, > osgUtil::RenderLeaf*&) () at /usr/local/lib/libosgUtil.so.161 > #6 0x00007f681db92f2c in osgUtil::SceneView::draw() () at > /usr/local/lib/libosgUtil.so.161 > #7 0x00007f681d69b6b6 in osgViewer::Renderer::cull_draw() () at > /usr/local/lib/libosgViewer.so.161 > #8 0x00007f681edaa479 in osg::GraphicsContext::runOperations() () at > /usr/local/lib/libosg.so.161 > #9 0x00007f681d6d5bfd in osgViewer::ViewerBase::renderingTraversals() () at > /usr/local/lib/libosgViewer.so.161 > #10 0x00007f6835a03b37 in OSGGTKDrawingArea::_expose_event(_GtkGLArea*, > _GdkGLContext*) (this=0x5575767c6450, area=0x557576c4c2e0, > context=0x557576c50580) at osggtkdrawingarea.cpp:83 > > Even if I do nothing in the capture callback it still crashes. > > I've looked through the OSG examples but nothing sets the postdraw or > finaldraw callbacks to NULL, both produce the same > crash. > > This code has remained unchanged for 10 years but wasn't being used so the > crash only came to light recently. > > I'm using OSG I built from source but I also tried it with > libopenscenegraph161/jammy on Ubuntu and it still crashes - > but strangely doesn't render an image but that's a problem for another day. > > ldd ./qd3d/nyb/.libs/nyb-2108.1.1 | grep osg > libosg.so.161 => /usr/local/lib/libosg.so.161 (0x00007faab9200000) > libosgDB.so.161 => /usr/local/lib/libosgDB.so.161 (0x00007faab8e00000) > libosgGA.so.161 => /usr/local/lib/libosgGA.so.161 (0x00007faab8a00000) > libosgText.so.161 => /usr/local/lib/libosgText.so.161 > (0x00007faab8600000) > libosgUtil.so.161 => /usr/local/lib/libosgUtil.so.161 > (0x00007faab8000000) > libosgViewer.so.161 => /usr/local/lib/libosgViewer.so.161 > (0x00007faab7c00000) > > Any ideas? > > Cheers, > -- Alberto _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
