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Point color attributes from USD Point Instancer from Houdini

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Point color attributes from USD Point Instancer from Houdini

Unread postby Tanto » Tue Jan 28, 2020 12:17 am

Hello all! I'm testing the transfer of instances from Houdini to Clarisse. The conversion of packed geos into USD point instancers within Houdini Solaris is awesome and makes everything much easier. However, I'm having trouble accessing point color attributes. My instance geos have a color attribute for variations on each object (let's call it CD_packed, which I'm easily able to access with an extract property), and my points have a second, differently named attribute for variations among the instances (Cd_points). I'm unable to access this second attribute in any way, even though it is present in the drop down extract property menu. Anybody had that problem and solved it?
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby dboude » Tue Jan 28, 2020 9:31 am

Hi,

Could you share a little USD file? I will have a look at it.

Thanks
Démian
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby Tanto » Tue Jan 28, 2020 4:05 pm

Sure, thanks, here's a quick example. As I was saying, I'm trying to access both Cd_Packed (which works) and Cd_Points (which doesn't).
Attachments
testColorExport_Clarisse.zip
(153.6 KiB) Downloaded 137 times
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby dboude » Tue Jan 28, 2020 6:22 pm

So,

The attribute you want to use is just missing in the file.

usd_property.PNG


I opened it in Houdini. Same. Cd_Points doesn't exist.

Export issue.

Cheers
Démian
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby Tanto » Tue Jan 28, 2020 7:51 pm

Thanks Demian for looking into it. Could you have a look at this new file? I made sure this one still had both attributes when reimporting in Houdini.
Attachments
testColorExport_Clarisse_v02.zip
(1.75 MiB) Downloaded 140 times
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby dcourtois » Wed Jan 29, 2020 10:07 am

Hi,

Sorry I missed this post previously! This is a known limitation: we're not importing primvars on point instancers for now.
This will be added in the next release, but I can't really give you an ETA for now.

Regards,
Damien.
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Re: Point color attributes from USD Point Instancer from Hou

Unread postby Tanto » Wed Jan 29, 2020 7:02 pm

Ok, merci Damien, looking forward to it!
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