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Solaris Render Geo Settings Curves Basis not working

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Message 1 of 12
Anonymous
852 Views, 11 Replies

Solaris Render Geo Settings Curves Basis not working

Hi,


I am switching between the different curve basis in the "Render Geometry Settings Node", but the curves do not update in the renderer. I am using USD curves exported from Houdini.


Is this supported yet?

Curves look like below in all renders no matter the type of basis I choose. "Thick" mode works though.


1610803586407.png

1610803814912.png


Thanks,

Klaus

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11 REPLIES 11
Message 2 of 12
pal.mezei
in reply to: Anonymous

Hey!


Could you share an example dataset, so we can confirm what's the issue?

Message 3 of 12
Anonymous
in reply to: Anonymous

Hi,


Sorry for the lack of response on this thread. Do you still need me to pass you a .usd file?


We are still experiencing the issue with curves not subdividing when changes the basis.


1615025357393.png


Message 4 of 12
pal.mezei
in reply to: Anonymous

Yes, please do.

Message 5 of 12
Anonymous
in reply to: pal.mezei

Hey,


Here you go. Usd file of a small subset of curves.


chrKiongoziA_hairUpperEyelashes_usdGroomHairs_vLatest.zip



Thanks,

Message 6 of 12
Anonymous
in reply to: Anonymous

Hi,

Any updates on this? I am still unable to get curves basis working in Solaris.


Thanks,

K


Message 7 of 12
Anonymous
in reply to: Anonymous

Just attaching a screenshot to show Scene Graph Details:


Both "basis" and "primvars:arnold:basis" are not reading the specified attribute. I have tried with bezier, b-spline and tried spelling it many different ways.

1618740725183.png

Message 8 of 12
jan.schoeman
in reply to: Anonymous

Hey, I was struggling with the same issue. I believe the solution is to set the basis curve primitives' "type" to "cubic".

Also looks like USD's basis determines the actual basis rather than the arnold basis primvar

Message 9 of 12
supervisorAlone
in reply to: Anonymous

Hi to all,
while I was shading a scene with fur/hair, I realized that my curves (I was rendering in "thick") had some issues at vertex point along their path. It's like arnold gives width to any vertex as well as the curves. 
I tried to change vertex sampling hairgen in sop, I deleted any attribute but  there's no way, I haven't been able to solve it yet. has this ever happened to you?

any Idea?
thankyou

hair problem.jpg

Message 10 of 12


@supervisorAlone wrote:

Hi to all,
while I was shading a scene with fur/hair, I realized that my curves (I was rendering in "thick") had some issues at vertex point along their path. It's like arnold gives width to any vertex as well as the curves. 
I tried to change vertex sampling hairgen in sop, I deleted any attribute but  there's no way, I haven't been able to solve it yet. has this ever happened to you?

any Idea?
thankyou

hair problem.jpg


This a different question, not related to curves basis.

Looks like you're using an older Arnold. See the screenshots for this Arnold 7.2.5 release note:

  • Improved thick curves intersector: Curves in thick mode are on average 10% faster (in some cases, more than 100% faster) and they look better in closeups. (ARNOLD-2875, ARNOLD-8549 and ARNOLD-14391)


// Stephen Blair
// Arnold Renderer Support
Message 11 of 12

Hi Stephen,

sorry if I am a bit off topic...

It seems that the problem also occurs with HtoA 6.2.5.1 is a bugfix release using Arnold 7.2.5.1 on houdini 20

 

fur_test.png

Message 12 of 12
supervisorAlone
in reply to: Anonymous

Hi, any news about it?

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