question

Chris Elmer avatar image
Chris Elmer asked ·

Is baking to udim texture supported?

The docs say no:

https://docs.arnoldrenderer.com/display/A5AFHUG/Baking

BUT the Arnold ROP has the option in the baking tab, so I have a glimmer of hope.

While baking to a normal uv set works just fine, I haven't been able to get udims to work.


If it is supported, what is the udim syntax for the file path in the output tab? I've tried <udim>, <UDIM>, and %(UDIM)d, to no avail.

Thanks!

Env info:

Houdini 18.5.563

HtoA 5.6.1.0

Arnold 6.2.1.0

htoabaking
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Thank you for confirming this works.

I have specified the udims I want in the baking tab. Do I need to also put a “udim” variable in the file path name like in my post? Or does arnold just append the udim number to the file name in some way?

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Julian Hodgson avatar image
Julian Hodgson answered ·

This is supported on the Arnold ROP under the Properties | Baking Tab, you can either specify the udim tile you want to bake e.g.

0:0 2:0 0:1 1:1 2:1 3:1 0:2 1:2

or

1002 1004 1023 1024

Alternatively you can click All and it will bake them all out.


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Julian Hodgson avatar image
Julian Hodgson answered ·

We'll update the docs, thanks for the heads up.

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Chris Elmer avatar image
Chris Elmer answered ·

Confirming that this works great, and that the current udim number is appended before the file extension (i.e. "texture.1001.exr"). I believe I had an invalid udim value which was breaking it previously.

Thanks for the help.

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