How can I add the effects of several normal maps (for instance if I have 3 normal maps : large details, average details and small details). I don’t understand well the logic or math to use.
For instance, here I have a large Voronoi texture (left) and a small Musgrave (right) :
I’ve tried with a MixColor :
It works somehow but I lose part of the deepness of the Voronoi texture.
The only way I’ve found is to connect one of the texture (for instance the Musgrave) to the displacement socket of the material output. It keeps better the valleys and hills of the Voronoi texture but it looks like a quick and dirty fix and it can’t work if I have more normal maps.
So I wonder what’s the correct way. Can anyone help me on that ?