I wouldn't be so quick to discount what blankslatejoe is saying here. While I agree in very general terms that painting normals like this isn't really a workflow that I would suggest people do, he does bring up a few valid points. Generating a bump map from a height map will never match as accurately as a hand painted…
yes but your whole texture should be based on 1 map, it should be your diffuse, spec, gloss and normals working together, and currently the best way to get all of that is a sculpt to genrate some really great maps to start with, and mathematically correct normalmap that you cant get by hand. also i have actually sculpted…