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Jim Polk avatar image
Jim Polk asked

indirect_diffuse AOV contribution

Does the indirect_diffuse AOV contribute at all to a light's diffuse AOV?

If so, can this be turned off somehow?

Thanks,


aovs
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Stephen Blair avatar image
Stephen Blair answered

The LPE for diffuse is C<RD>.*

and diffuse_direct is C<RD>.L

so for a light group AOV it should be C<RD>.<L.'key5Light'>

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Hmm,okay, so you're leaving out the asterisk on purpose, yes?

So what would be the expression for the "indirect only" for a light group AOV?

Currently, i'm using:

> "world_key5Light_diffuse_indirect C<RD>[DSVOB].*<L.'key5Light'>"

but I get the feeling that's not correct...

Thank you,

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Yes, I left of the asterisk because if I look at the built-in LPEs:

diffuse_direct = C<RD>L

diffuse_indirect = C<RD>[DSVOB].*


diffuse_indirect_key5Light would be the indirect for that light group, so your custom LPE output should match that

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Jim Polk avatar image Jim Polk Stephen Blair ♦♦ ·

I see, okay, Thanks for clarifying that.

So this job is older and we're still using 5.1.0.1 on it, though newer productions

are either on 5.4.0.2 or 6.0.1.0, and it is possible we could shift version for this

particular set of shots.

So that said, using these LPEs...

>> "diffuse_direct_key5Light C<RD>.<L.'key5Light'>"
>> "diffuse_indirect_key5Light C<RD>[DSVOB].*<L.'key5Light'>"

...yield two AOV layers which are identical. Why would that be?

Thank you,


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Thank you very much, Stephen!


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Stephen Blair avatar image
Stephen Blair answered

A light's diffuse AOV has both the direct and indirect contribution of that light.

If you don't want the indirect, can you use the light's diffuse_direct AOV?

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Maybe. We normally set our light diffuse LPE to:

> world_key5Light_diffuse C<RD>.*<L.'key5Light'>

What would be the LPE for the 'diffuse_direct' ?

Thank you,



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Jim Polk avatar image
Jim Polk answered

Hmm,okay, so you're leaving out the asterisk on purpose, yes?

So what would be the expression for the "indirect only" for a light group AOV?

Currently, i'm using:

> "world_key5Light_diffuse_indirect C<RD>[DSVOB].*<L.'key5Light'>"

but I get the feeling that's not correct...

Thank you,


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