Hello again,
I`ve completed the Rough_Wall material and uploaded it to the MXM gallery;
you should be able to get it here:
http://mxmgallery.maxwellrender.com/new ... =0&id=3464
I noticed that adaptive displacement voxelizes with good speed on flat surfaces (2-4 poly only!), but it won`t be useable on curved high poly objects. (for the simball preview I used precision 12 only!)
In such a case precision has to be tweaked individually for the basemeshes.
It`s actually the first material I "dare" to upload; I hope you like it!
cheers,
daniel