USD Pixar Preview Surface

[oglu]

Are reflections supported for the Preview Surface Shader?
Cause they dont show up on the Pixar Kitchen.

https://youtu.be/EnI_oY9bFjc

[oglu]

I hope we see the usdpreview surface shader fully supported in the future. This shader is coming more and more important.

[vlado]

Reflections should work fine - at least they worked for me on the Animal Logic "labs" scene.

Best regards,
Vlaod

[oglu]

Thanks Vlado.
I have to double check with the Pixar Kitchen.

[doppelgaengerdigital]

I checked with the latest nightly for Maya 2023 and there is no reflection in the kitchen scene.
V-Ray 5 for Maya, update 2.2
(v5.20.02, revision 31361 from Apr 13 2022)

[yolov]

Hey, I spent some time looking into the Kitchen scene.
There are no materials specified in the Kitchen scene, as far as I can tell. None whatsoever. There's no textures either.
Every mesh, however, has a displayColor attribute and that's what V-Ray renders and that's why it's only the diffuse.
Arnold seems to apply a specular color to each and every object in this file, I'm not sure why it does that, but that's why it renders differently compared to V-Ray.

In this sense, V-Ray renders the USD file correctly.
Other than that, we do support the usdPreviewSurface material and it also seems to render correctly whenever diffuse, opacity, emission, metallness/specular, clear coat etc are used. The Kitchen just doesn't have materials.

[doppelgaengerdigital]

thanks for investigating Alex!
I just tried the ALab scene from Animal Logic. Over there, everything works as expected. I have materials and textures there. Looking good and runs smoothly!