I've created a gorgeous spacey material that I'm using as my environment map. The problem is that it's extremely memory intensive, because it's so complex. Now that I've got a look I like, I'd like to sort of "downconvert" this material into a nice hirez bitmap and use that for my environment map. But I really have no idea how to do that. When I right-click the material and select render, I get a tiny little segment of my big beautiful texture.