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Maya ACES setup scene

13 REPLIES 13
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Message 1 of 14
hyperviktor
689 Views, 13 Replies

Maya ACES setup scene

Could anyone possibly provide a maya scene with proper ACEScg setup and reference render to crosscheck our ACES setup ? There's so many confusing information about this it would be good to get a solid point of reference to crosscheck if everything works just fine.


Thank you!

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13 REPLIES 13
Message 2 of 14
hyperviktor
in reply to: hyperviktor

Anyone with a scene file ?

Message 3 of 14
lee_griggs
in reply to: hyperviktor

What don't you understand about the workflow?

Lee Griggs
Arnold rendering specialist
AUTODESK
Message 4 of 14
hyperviktor
in reply to: hyperviktor

I'm unsure about the entire setup I have - I've downloaded ACES 1.2 from github, copied everything to C:\ACES\ folder and created an OCIO environment variable pointing to the OCIO config file.

First, I have no clue if there are any further steps to complete this setup.


Second, I'd like to see if the setup appears right is really the right one.


At this point my color picker in maya gives me 0.303 value non color managed for a 0.5 grey which is weird.


When I connect a tetxure to the aiStandar shader, regardless what input color p I'm using ( utility - srgb or anything really from the list ) the render looks exactly the same.



Basically , I'm trying to crosscheck every single step in the process to see if I did anything wrong and how things should function.

Message 5 of 14
brian_Foley
in reply to: hyperviktor

In Maya preferences - Color management did you set up for ACES?


You can follow this guide for ACES with Arnold to get your settings correct

https://docs.arnoldrenderer.com/display/A5AFMUG/ACES+Workflow


And I highly recommend this free script as an in-program guide and texture converter.

https://gumroad.com/liam_collod#ukVVo


Hope this helps.



Message 6 of 14
hyperviktor
in reply to: hyperviktor

No, it doesn't help, it comes across as patronising / taking the piss.


As I wrote earlier, I red all these articles / sources and I have a setup just like it is described in the Arnold docs.


I need to understand the steps of the setup and I need to be able to crosscheck what I've done is correct.


STEP1


I need to understand what are the files on github, why we copy them and where and if I did copy everything to the right place.


I have created an environment variable OCIO pointing to the config file, so every software supposed to read the same config which sounds fine.


STEP2


I have a full ACES setup exactly as described in the Arnold docs but I need to be able to verify that it is correct as I am seeing some weird things ( again, I did write this before ) - my 0.5 mid grey in the color picker when color management is turned off changes to 0.303 which is way off in my understanding and I don't know how can this happen or why.



Message 7 of 14
hyperviktor
in reply to: hyperviktor

So no one here who uses ACES has a sample maya project ? Really ?

Message 8 of 14
Anonymous
in reply to: hyperviktor

Hi
a scene won't help you if the rules are not setup correctly
in Maya Color Management:
OCIO Config Path: must point to: config.ocio (aces_1.2. or aces_1.1..)
Input Color Space: ACES-ACEScg

in aiImage or maya file:
Texture acting as beauty, color, or specular_color. must be set to: Utility-sRGB-Texture
Texture acting as data displacement, normal, bump, glossiness , roughness, specular, must be set to: Utility-RAW
Texture acting as environment exr, hdr, must be set to: Utility-Linear-Texture
by the way you have to provide a scene !

Message 9 of 14
hyperviktor
in reply to: Anonymous

Dude, that is exactly my point, I am trying to figure if everything set up correctly, that is why I'm asking for a scene + a rendered .exr of that scene.

So if I render the scene on my system I have something to compare the render to.


BTW I have the setup as you've described and still don't get the right results.


I don't know why this is so difficult .. 😕


Message 10 of 14
Anonymous
in reply to: hyperviktor

can you put a simple test scene here!
just a teapot or a sphere

Message 11 of 14
hyperviktor
in reply to: Anonymous

Sure, here it is - I was making this based on an article comparing sRGB linear vs ACES and my render with ACES still looks more like the sRGB example.ACES_color_box.zip

I had to ZIP it as it didn't like the Maya file.


Message 12 of 14
Anonymous
in reply to: hyperviktor

what do you expect to see ?
with & without OCIO
with.jpg
without.jpg

Message 13 of 14
hyperviktor
in reply to: Anonymous

Seems this is my problem, my render looks like yours without version which is clearly wrong and I have no idea why.


Actually it looks different than both your images ..render-test.jpg

Message 14 of 14
hyperviktor
in reply to: Anonymous

Any idea why my render is different than your ACES render ?

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