HI Glen, Thanks for posting the model. The mailing list rejects messages that are larger than 300k so it won't have made it through to the list. I get all bounced messages as I'm the mailing list admin. I had a quite look at the model - it loads fine with my osgviewer but I get the message:
Warning: detected OpenGL error 'invalid value' at after RenderBin::draw(..) Send to the console, and performance is pretty low with the draw dispatch and GPU draw time both quite large for a relatively modest model size. The OpenGL error will be from a setting somewhere in the scene graph that is invalid, OpenGL errors cause performance problems so it's difficult to know what to interpret from the performance issues until the error is fixed. Unfortunately I don't have enough information from this simple test as to what the erroneous setting might be, but it there is reasonable chance that this error is causing the crash on your system, while my OpenGL driver is able catch the error and report it without doing further damage. I am using svn/trunk version of the OSG on Kubuntu 14.04 on an Intel+Geforce 760 GTX system with NVidia drivers. One way of pinpointing the error better is to enable fine grained error checking in the osg::State by setting the env OSG_GL_ERROR_CHECKING to ON, on my Linux system this is: export OSG_GL_ERROR_CHECKING=ON I don't know what the best way to do it is with VisualStudio though - it's over a decade since I used it. When I enabled the fine grained error checking I go the warning: Warning: detected OpenGL error 'invalid value' after applying attribute Material 0x29638c0 Which strongly suggests that one of the osg::Material in the scene graph has an erroneous value in it, which one I can't comment on. The best thing you could do would be to load the scene graph and then write a custom NodeVisitor that traverses through the scene graph to fine all the osg::Material and check their values to see if they are sensible. Robert.
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