I seem to recall a patch in the tracker for a node that can be used to make normalmaps from bump maps. Until it comes, though, I need some quick hack to mix some maps and get a normal out of it.
This is what I got after playing around some:
What gets me is the fact that the result is the same as the normal output from the texture node, but there could be a shorter way to accomplish this. If you know it, and you’re willing to share, please do
So, how do you guys compute your normals when you can’t get’em directly?