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Alexander Hansson avatar image
Alexander Hansson asked ·

issue with aiRoundCorners, bump and normalmaps through glass/refraction/transmission -like materials

Hello!

I do not know if it is a bug or an issue, but I have a problem with some attributes not working as expected through glasslike materials.
I am running Arnold 6 with maya 2020, cpu rendering. I am trying to render 'aiRoundCorners' through refractive/transmissive material but the aiRoundCorners won't show through.

There are some issues with bump and normalmaps as well through glass. Mainly on surfaces away from the camera. The transmission seems to do something weird with the normals.

aiRoundCorners_throughGlass_01.png

bumpNormal_throughGlass_01.png

normal maptransmissionglassrefraction
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Jose Miguel avatar image
Jose Miguel answered ·

Is this something to be fixed soon?

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Alexander Hansson avatar image
Alexander Hansson answered ·

Here is a basic scene. But only with aiRoundCorners setup.

https://drive.google.com/drive/folders/1wtK0hKRRjKlv-b4FQ_n4WOSRUqRRzZNl?usp=sharing

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Lee Griggs avatar image
Lee Griggs answered ·

I can confirm the issue with transparent surfaces.

>There are some issues with bump and normalmaps as well through glass. Mainly on surfaces away from the camera. The transmission seems to do something weird with the normals.

Is this with round_corners or just normal maps alone? Can you share some images and/or a simple scene, please?

Are they single-sided surfaces?


1586957370479.png (205.6 KiB)
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I did include some images with the post.
But I could include a simple scene as well soon.

It is same both with aiRoundCorners alone and combined with normal and bumpmap.

I tried with a cube and a single sided mesh/poly. I also tried to turn on and off on the 'Opaque' in the shape of the glass object as well. But there was no difference.

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