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Zeno Pelgrims avatar image
Zeno Pelgrims asked ·

Query ar_picture parameter

I need to get the .exr output path, but I'm not sure how to retrieve that in a houdini session.


When kicking .ass it's on the filename parameter of the exr_driver. However in a houdini session, we deal with the houdini_driver instead. It's also not on the options node.


I see the parameter is called ar_picture. Where can I access this information through the arnold api? I'm not sure which node holds this data in the ROP?


Thanks

Zeno

houdinihtoaapipathpicture
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Stephen Blair avatar image
Stephen Blair answered ·

Hi Zeno

ar_picture is an HtoA parameter, so you won't get it through the Arnold API

HtoA will translate that to an entry in the options.output array.

If the AOVs are going to separate files, there will be parameters like ar_aov_separate_file1


In Houdini, with Python, you would get it like this:

import hou
rop = hou.selectedNodes()[0]
rop.parm('ar_picture')


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Gotcha, this is what I feared.

Okay, will have to find a different route in that case. Thanks for the quick answer.

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