Displacement Map Exploding in Arnold?

[Anonymous]

Hey everyone,

I'm quite new to texturing and displacement maps, but I'm having a problem I've not encountered before.

I modelled a conker and textured it in Substance Painter, using a height map to create bumps and ridges when plugged in as a displacement map in Arnold. This works great.

When I try to do the same for the shell, however - which is covered in sharp spikes that come to a thin, 1-vertex point - the displacement map causes the ends of these spikes to invert and explode, completely destroying the mesh in the renderview. I'll try to upload some screenshots in a little while.

If anyone could help with this, it'd be a big weight off my mind! I'm not sure where I'm going wrong, or whether it's just not possible to put a displacement map on a mesh with such thin 'spikes' like I described.

Thank you all!

[Anonymous]

Without displacement applied

Displacement applied at height 0.500

Displacement applied at height 0.050

In the last picture, you can see that the mesh is inverting/imploding even along the edge of the shell. I'm so confused!

[Gsteeg]

Did you ever figure this out? My model looks like it's being torn apart on hard edges, I'm not super good with Maya either.