Not directly, unfortunately. It would require quite deep modifications to the OpenGL handling. It was possible for a brief while when this approach worked, but for some reason, that no longer seems possible – at least not on my system.
But what I’ve often resorted to is to grab lots of different zoomed-in screenshots, panning around between each shot, so that the combination covers the full frame that you want to produce. You can then recombine them using a decent image editing program (I used GIMP for that). It’s a bit fiddly to stitch all the frames together (in GIMP, I used layers with a bit of transparency to position each one correctly – takes some getting used to, but relatively easy once you’ve figured it out). But assuming this is not something you need to do routinely, it does the job…