Can anyone explain why, when I try and displace a surface layer with a powerfractal it works fine. When I replace the powerfractal with a redirect shader or a twist and shear shader nothing happens.
What I want to do is just re direct or twist the upper part of a rocky landscape outwards and not the rest.
Here is an example file share. You might look at that setup.
http://www.planetside.co.uk/forums/index.php/topic,23607.msg238901.html#msg238901
Thank you!