I have been having issues creating displacements on complex surfaces. Squares and such work fine. I had a streaking problem somewhat like this before but now the displacement is only appearing in certain poly’s within the surface.
Here’s a render I did a few weeks back that had streaking, but the displacement showed up everywhere it was supposed to:
Re: a different displacement problem
As I’ve already answered to your problem here:http://forum.asgvis.com/index.php?topic=6908.msg45848#msg45848
The issue you’re having is not enough subdivisions. when you have a large plane/face vray needs enough subdivisions to do the displacement.
Just divide your plane (preferred to triangles).
Re: a different displacement problem
About how many subdivisions? That is 2048, I started at 128 and it did not make any discernable difference.
Re: a different displacement problem
what I meant is that you need to divide the surface manually (via SU)