Is there a way to merge two displacement maps in Arnold/Maya?

tgm79

I have a piece of clothing. I have some medium and small details sculpted on it in Zbrush. I also want fine fabric details on top of all. The easiest way would be to add them in Zbrush with the Surface noise and export just one single displacement map. However, my height map is too fine to read well with the surface noise. So I will have to add my fabric displacement in Arnold. But I have no idea how to merge the bigger details with the fabric details? How would you do it?

Eric Chadwick

Bigger details = mesh. Smaller details = tiled bump maps. Displacement is expensive to render, and prone to cracking/distortion along UV seams; avoid displacement unless you really require it.