displacement and surface topology

[powerandrubber]

I run into this problem once in a while, presumably it has to do with surface topology (the dark areas follow surface edges). The grass object is an acad polyline with a edit mesh mod, simple 2d bitmap displacement. Just wondering if there's an easy fix.

[powerandrubber]

Ok nevermind. Found the thread on "thin triangles". Subdivide mod works here but ultimately garbage in garbage out...

[3DMK]

For something so remarkably simple such as a ground plane ALWAYS remodel it in max.....it should take you all of about 2 seconds! And it will let you sleep at night too...lol