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Rendering with Arnold in 3ds Max using the MaxtoA plug-in.
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Metalness, Roughness, Normal and Height

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Message 1 of 10
stephen.barker
4066 Views, 9 Replies

Metalness, Roughness, Normal and Height

screen-shot-2017-10-22-at-191716.pngI am going from Substance Painter to Maya using Arnold 5 on a Mac.

I looked this up but did not see the answer.

Do I need to set the above maps to Raw if I the color management set as per the attached?

Does the answer change if I am using tx files instead of tiff

thank you for your help

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9 REPLIES 9
Message 2 of 10
dadeFC4BK
in reply to: stephen.barker

Yes, all of those maps should be set to Raw since they needed to be treated as Linear files. If you loaded them into Maya, attached them to your material/s and set their color settings to Raw, then made .tx files, you shouldn't need to do anything else. However, if you've converted your texture files to .tx elsewhere, I cannot be certain that a gamma curve hasn't been added to them. Ideally you should always work with raw, non-gamma-corrected textures and allow the final application/renderer determine how they will be treated. In my experience, .exr files seem to be the most reliable.

Message 3 of 10
dadeFC4BK
in reply to: stephen.barker

Hi @Stephen Barker, no worries...

Re: linear files, basically you want these textures to have no gamma correction or color profiles assigned to them. Since Arnold is using these textures to assign a value, gamma curves used for viewing images (such as sRGB) can mess with the actual values. This can cause major issues... especially for roughness and normal maps.

Re: .tx files, yes... you should create your .tx files using the Arnold TX Manager after you've assigned all the textures to your material and adjusted their color settings accordingly.

Re: Alpha is Luminance, yes that is correct.

Message 4 of 10
dadeFC4BK
in reply to: stephen.barker

Thanks @Stephen Barker
Re: .exr files, yes... set your settings as usual. The main reasons I prefer .exr files is that I never have to worry about them carrying an unwanted color profile, they're linear, they're 16-32 floating point, and they're really small when you used one of the built in compressions.

Re: conversion to .tx, yes... converting to .tx can save you considerable render time, especially on scenes with lots of textures.

Message 5 of 10
stephen.barker
in reply to: dadeFC4BK

thank you @Dade Orgeron

Sorry I am new to all of this:

What are linear files?

When you say 'then made .tx files' do you mean via the Arnold TX manager?

Also I have set the metalness and roughness Color Balance to Alpha is Luminance. Would that be correct?

thank you once again (like given).

Message 5 of 10
stephen.barker
in reply to: dadeFC4BK

@Dade Orgeron

thank you. It says reward user, not sure how many points are worth something. I did it but as I say not sure about it all.

With .exr files I still set the raw and luminance as above?

Are .exr files as efficient with Arnold as .tx or do I need to convert the .exr to .tx?

thank you very much indeed

Message 7 of 10
stephen.barker
in reply to: dadeFC4BK

@Dade Orgeron

Thank you for all of your help - much appreciated

Message 8 of 10
lee_griggs
in reply to: stephen.barker

More information about using Maya 2017(+) with RAW/Color Management can be found here.

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 9 of 10
stephen.barker
in reply to: lee_griggs

@Lee Griggs

thank you

Message 10 of 10

@Lee Griggs

thank you

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