Help, Arnold doesn't render Maya shaders in Maya 2018

[Anonymous]

Hi all. I'm having issues with Anorld to Maya 2018 renderer. I created an eye and textured it with Maya ramp and noise shaders. I also created an outer eye and made it transparent. This renders correctly in Maya renderers. But when I rendered using Arnold, the ramp and noise textures do not render. How can I fix this please?

NB: I've attached pics of the renders below. The picture showing the eye textures was rendered with Maya renderer while the other was done using Arnold.

[lee_griggs]

What shaders are you using?

[Slava_91]

It seems you forgot to tune your glass shader(Cornea) on the eye

[lee_griggs]

Also, remember to disable Opaque and enable Caustics for the outer cornea shader.

[Anonymous]

Thanks @Lee Griggs. I turned off opaque for Arnold under the Outer Eye mesh Attribute Editor. I used Maya shaders before and it didn't work. Using Arnold surface shader solved the problem. I guess Arnold doesn't recognize Maya ramp and noise shaders.

[Anonymous]

Didn't use glass shaders. Just ordinary Maya Lambert with transparency turned on.

[lee_griggs]

Maya ramp and noise shaders should work fine. How was you using them?

[Anonymous]

I created materials for the noise and ramp shaders each. Then I created a Layered texture and connected both noise and ramp materials to it. Then I applied the layered texture to the eye. It rendered fine using Maya renderers, but Arnold wouldn't have it.

[Anonymous]

with Arnold shaders it finally rendered

[lee_griggs]

Great! MtoA also has its own layered shader, layer textures and mix shader.