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Darren Hing avatar image
Darren Hing asked · Mar 15 at 01:57 PM

triplanars in combination with texture refrence objects causing nan/inf errors

Attempted to bake these triplanar nodes with render selection to texture and the nans actually baked into the maps(blue spots). They also dont occur in the same places every time. removing the reference object seems to get rid of them but the reference object is required to stop swimming?

texturenodesbake
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Stephen Blair avatar image
Stephen Blair answered · Mar 20 at 10:42 AM

3pm EST today

Arnold 5.3 is binary compatible for custom shaders. Custom operators would need to be recompiled.

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Malcolm Van Aardt avatar image
Malcolm Van Aardt answered · Mar 20 at 10:27 AM

@Stephen Blair,

Thanks for the response. When is the relese date or Arnold 5.3?
Will it be a smooth transision /upgrade from 5.2.2.1 or will we need to rebuild our shaders?

Kind Regards

Malcolm van Aardt

Technical Supervisor | Triggerfish Animation Studios

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Stephen Blair avatar image
Stephen Blair answered · Mar 20 at 09:54 AM

triplanar doesn't work with Pref, so you can't expect correct results

If you can wait until Arnold 5.3 is released, there's a fix

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Malcolm Van Aardt avatar image
Malcolm Van Aardt answered · Mar 20 at 08:51 AM

Good day Arnold Answers,

I was wondering if you could shed more light on this topic.

Right now our Studio is running on MtoA 3.1.2.1 with Arnold Core 5.2.2.1.
How unstable it the aiTriplanar in Pref at render time?

How unstable it the aiTriplanar in Pref when baked and is there a workaround for the NAN/INF errors?

What version has a working aiTriplanar in Pref?

This implicates our Pipeline decisions and scheduling predictions.

Kind Regards
Malcolm van Aardt

Technical Supervisor | Triggerfish Animation Studios

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Darren Hing avatar image
Darren Hing answered · Mar 18 at 10:49 AM

ok so then if pref doesn't work with the triplanar you can't use it for animating objects?

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Stephen Blair avatar image Stephen Blair ♦ · Mar 20 at 09:55 AM

You can't use it for anything where you want to use pref to prevent swimming

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Darren Hing avatar image
Darren Hing answered · Mar 15 at 02:59 PM

Hey Stephen, thanks for the response. So when you say "pref", do you mean the coordinate space setting? So if this was set to object or world it would work with the texture reference object?

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Stephen Blair avatar image Stephen Blair ♦ · Mar 15 at 03:09 PM

Pref is the reference position that MtoA gets from the texture reference object.

If you use object or world, then you're not using the texture reference object, and you should see texture swimming.

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Stephen Blair avatar image
Stephen Blair answered · Mar 15 at 02:32 PM

triplanar does not work Pref, that's a known issue

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