Hmmm... have you tried rebuilding the shaders???

On Thu, May 31, 2018 at 2:14 PM, Ponthieux, Joseph G. (LARC-E1A)[LITES II] <
[email protected]> wrote:

> Howdy yall,
>
>
>
> I thought I would post here before I escalate this but… Arnold on Maya
> 2018 is producing an error in render…
>
>
>
> I’ve got an ESRI City Engine scene imported into Maya 2018, It was working
> fine under Maya 2017 and rendering fine in Mental Ray. But mental Ray is
> gone now.
>
>
>
> 1.       It renders in the Maya Software render fine.
>
> 2.       In Arnold it produces what looks like triangulation
> (Tessellation) errors rendering some triangles darker than others.
>
> 3.       It only produces the problem on materials with texture maps.
>
> 4.       Disconnecting the textures from the diffuse color removes the
> problem. But removes the texture also. But this seems to indicate its not a
> lighting, normals, or shading error.
>
> 5.       I’ve turned literally everything in Arnold settings off or
> neutral and no change.
>
> 6.       Its not shadows, nor anti-aliasing, nor duplicate polygons, nor
> a bad mesh.
>
> 7.       Forcing a triangulate on the mesh can make different triangles
> darker but the problem does not go away.
>
> 8.       All reflections, shadows, motion blur, etc have been turned off
> in Maya and Arnold for Render Settings and Object. No change.
>
>
>
> Any thoughts?
>
>
>
> Thanks
>
> Joey
>
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