Wierd micro displacement I have a strange behavior as I am trying to setup micro displacement. I use blender 2.79b. My mesh have a Subsuf modifier from the experimental feature set with the adaptative option turned on, the displacement settings in the material is set to true.



This is a part of the shamefull result. These black stripes follow the seams I used to unwrap the UVs. On top of that the micro displacement does not show up. 
Do you know can cause this ? 

Ps : Tell me if you need more details. 

This is the material nodes setup I'm using. No displace modifier involved.



Making a normal render did not fixed the issue. The object has rougthly 100k+ vertices accross 150 blender units in x and y. (subsurf modifier unapplied)
You have to add a displacement node (shift+A vector/displacement) to your texture and plug it to height socket.