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Tigrana Nebesna avatar image
Tigrana Nebesna asked ·

Substance Painter textures rendered in Arnold don't look as expected

Hi guys,

I'm struggling two days already to make my textures from Substance to look similar when rendered

in Arnold (I understand it'll not be 100% match). The problem is bump, which looks nothing like in Substance. I tried to use Normal as a bump and then Height as a bump (aiStandartSurface shader). In general Normal gives harsh and different pattern result in scratches and dots keeping rust bump and pattern more less ok, Height does vise versa - too light in scratches and dots, no bump at all in rust. Here are the details:
What I tried already and it didn't help:
1. To use Normal map as a bump ( use as Tangent Space Normals on, Flip R, Flip G off) (screenshot), then:

- Changed color space of Normal to Raw and back to sRGB, turned alpha is luminance on/off
- Changed bump2d node to aiNormalMap

- Changed color space of BaseColor to Raw as someone suggested in related topic
2. To use Height as a bump (plugged directly into shader's bump without any changes) (screenshot), then:
- Changed color space of Normal to Raw and back to sRGB, turned alpha is luminance on/off
3. Updated Maya (to 2018.6) and Arnold (to 3.3.0)
4. Exported higher resolution textures from Substance - 8k 16 bit instead of 4k 8 bit

Nodes are connected to the shader as direct plug in, settings:
BaseColor - sRGB
Roughness - Raw, alpha is luminance
Metalness - Raw, alpha is luminance
Normal/Height - as described above

Hope you can help, guys, I'm so frustrated...

mtoabugsubstance painter
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Freaky Styley answered ·

Hi! Did you find a way to resolve this problem? I'm interested too..

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