Octane 2020.1 hair rendering attributes

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Octane 2020.1 hair rendering attributes

Postby fantome » Thu Aug 13, 2020 9:54 am

fantome Thu Aug 13, 2020 9:54 am
Hi guys,
i though octane 2020 now support geo / cv / point attributes ?
But in the octane parameter curves rendering tab , i only see Cd / Alpha using the old primitive attribute methods + use of rgb and alpha tex ?
I would like to know if we still need to use the old method for hairs or if we can now acces directly attributes with vertex textures ?

Cheers
E
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Re: Octane 2020.1 hair rendering attributes

Postby galleon27 » Thu Aug 13, 2020 1:55 pm

galleon27 Thu Aug 13, 2020 1:55 pm
There is an Attribute tab. Use that to get whatever attribute you need. In the material network there are two nodes, Color Vertex Attribute and Float Vertex Attribute. Use these to read the attributes you passed in the Attribute tab.
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Re: Octane 2020.1 hair rendering attributes

Postby fantome » Thu Aug 13, 2020 3:47 pm

fantome Thu Aug 13, 2020 3:47 pm
Thanks for your answer galleon27, so it does work with hair ! great news, don't know why they keep the old workflow in the UI.

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Re: Octane 2020.1 hair rendering attributes

Postby juanjgon » Thu Aug 13, 2020 3:53 pm

juanjgon Thu Aug 13, 2020 3:53 pm
fantome wrote:Thanks for your answer galleon27, so it does work with hair ! great news, don't know why they keep the old workflow in the UI.

For backward compatibility with the old scenes/workflows.

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-Juanjo
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Re: Octane 2020.1 hair rendering attributes

Postby fantome » Thu Aug 20, 2020 8:58 am

fantome Thu Aug 20, 2020 8:58 am
thanks for the extra info juanjo. for retrocompatibily houdini has an internal mechanism that allow you to hide previous version of an hda and to use it if an occurrence is find in an old scene. that would allow to hide the legacy parameters but the previous version would be use in case someone open an older scene.

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