05-21-2016, 04:03 PM
It might be a little late, but I've figured out how to make these maps.
Which results in a render like this:
You can do this by taking the Diffuse, Normal Map, and Specular/Ambient Occlusion map, creating a new layer for the normal map, setting it overlay and desaturate it. Then you create another layer and place the Specular/Ambient Occlusion map in this one, and setting it to Multiply. Then turning up the brightness, and saving the composite map.