Strange issue rendering a new material

[james_churchill]

Hi,

I have created a new sand and gravel material. I have used a bitmap hi-def image in the Diffuse setting, changed parameter to a Normal map and uploaded a bitmap hi-def normal image to the Bump setting and for some reason while the render in Rhino shows the material successfully, VRay renders a strange white with curved lines. See attached images

[james_churchill]

I've noticed that this renders fine on a square surface. However my surface is an unusual polygonal shape made out of a long winding closed curve. I am using Box as my mapping type - this must be having some kind of an impact on how Rhino renders this material.

[james_churchill]

Apologies, I have worked it out, it seemed there was a hidden surface underneath obstructing the render.

Thanks

[nikoleta.garkova]

Hey james_churchill,

Glad to hear you've found what it was from! Keep in mind it would be useful to attach or forward us the project file for investigation when you're having such issues.