I am not quite sure when you are saying the current context. Are you talking about osg's current context or OpenGL's context? I am sure I have used glGet* methods in the current OpenGL context. Also I have tried to use glGet* in osgHud examples like this:
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.
viewer.sync();
// update the scene by traversing it with the the update visitor which will
// call all node update callbacks and animations.
viewer.update();
double proj[16];
glGetDoublev(GL_PROJECTION_MATRIX, proj);
//after get I output the projection matrix using std::cout
//std::cout<<proj[0]<<" "<<proj[1]<<" ".....
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
The glGetDouble is not in thread that has the current graphics context as will produce undefined results if not a crash...
Robert.
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