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Clarisse newb questions

Unread postby SeekerFinder » Mon Mar 11, 2019 9:43 am

Hi,
We've been watching Clarisse for 7 years. Amazing product. Thinking of using it for archviz. While it's not the product's focus, it does seem that the whole asset referencing system seems ideal for this purpose and the massive geometry capacity great for foliage. I'm actually surprised to not see more guys using Clarisse for this purpose. Perhaps the answer lies in my very questions...

1. Clarisse does not seem to have a daylight system - this would be critical for us. Ideally, getting light from the daylight sun and HDRI environment would be great (Octane has this feature and it's great). Any plans for a geo-referenced daylight system for a future release? Or am I missing it somehow?
2. The only info I can find related to import formats in the wiki is: https://www.clarissewiki.com/3.6/suppor ... rmats.html, which speaks of the native Clarisse format, and this one: https://www.clarissewiki.com/3.6/feedin ... ayer2.html, which just hints at OBJ as a format.
I guess I'm used to a clear list of import / export formats from a DCC company. I *think* the import formats are limited to OBJ, LWO and alembic and the export to OBJ and alembic - is that the limit currently? Also, on this subject, are any other formats (like FBX) planned?

Any other thoughts on Clarisse for archviz work would be much appreciated. Perhaps we are missing some other fundamental shortcomings? Or perhaps someone is already using Clarisse for archviz and they're just hiding it!?

Looking forward to hearing from you guru's...

Cheers,
Seeker
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Re: Clarisse newb questions

Unread postby dboude » Mon Mar 11, 2019 10:06 am

Hi,

1. It's a good idea. We'll have a discussion about that.

2. Yes, input formats are Obj, Lwo, Alembic, and VDB. Output formats are Obj and Alembic. Fbx is not planned because of its limitation regarding the multithreading.

You can find some Archviz project on the forum like this one : https://forum.isotropix.com/viewtopic.php?f=8&t=4032

Welcome to our community.

Cheers ;)
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Re: Clarisse newb questions

Unread postby SeekerFinder » Mon Mar 11, 2019 11:01 am

Hi Démian,

Thank you. I would be very keen to see a daylight system which I am sure could also be useful for IFX animations? I also saw it on someone else's wish-list.

Would also love to hear from some archviz users re their experience with Clarisse.
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Re: Clarisse newb questions

Unread postby mdkai » Mon Mar 11, 2019 12:47 pm

Hello,

1.
the daylight system was also requested by some other users here
https://www.isotropix.com/user/feature/59

Its a bit of a "special" light type as it does combine already existing light types (infinite distant + ibl dome ) and some logic to drive the properties of sky and sun colour and position with haze etc ..

2.
Format wise it covers als relevant multiplatform formats, with ABC being the most useful and powerful in terms of assets, and USD in terms of larger scale sets.
Both are standards in VFX (USD is still considered fairly new) and full fill all needs.

FBX is unfortunately a format owned by Autodesk, and therefore very valid if used in that environment, but lacks the ability to scale effectively with multithreading, essential for Clarisse to work well.

For archviz
Version 4 brings portal lights, which improve the indoor lighting quality from exterior light domes (HDRI)
Sampling can now be adaptive which helps to speed up small detail sampling.
IES Lights can be used to add industrial profiles for actual lights.

Shader wise you can have 3 approaches:
- combined shader based on multilayer shader,
- alShader as being the most complete, feature rich,
- Disney's principle shader which relates to a direct workflow with substance and other PBR texture tools to keep parity with textured metalness values.

Nice way of referencing scenes and loading assets is pretty much the solution for library with premade assets which you reuse many times, like decorations, shaders for surfaces, lights and so on.

Have templates for scene to start very quickly and be able to iterate quickly through multiple surface looks using shading layers and rules ..
Sometimes clients want wood, then concrete, then both , then metal and at the end its glass...

There are more helpful options which can support in Archviz i guess, been a while since i did one.
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Re: Clarisse newb questions

Unread postby SeekerFinder » Tue Mar 12, 2019 11:06 am

Hey mdkai,
Thanks for the info & sharing your thoughts.

I agree there are certainly solutions that are more adapted to archiviz and I know this is not Clarisse's focus (sobs). But they have created such a powerful product and there are elements in it that are extremely well suited for archviz, such as the easy way to swap out material options etc as your mentioned.

I saw some guys being disappointed about Clarisse's interior render speed - hence the portals. But interior render are slow without exception (unless some direct light kernel is used as with Octane, which is not always very accurate).

I would love to build a little pipe here to see how we can harness Clarisse for it's strengths and perhaps still use other tools for theirs. I just can't stop marveling at the massive polycount Clarisse can handle and the fast renders with VDB etc. The ray tracing quality is also excellent. Exterior shots with lots of landscaping and various road / path / foliage / weather options composed in a fast and methodical fashion? Almost enough of an excuse for an architect to learn Python!

I don't have all the time I need to learn all the tools I want to and it would be foolish to spend a lot of time on a tool when you're only convincing yourself that it can do what it in fact can't. But if dboude & co add a decent daylight system and perhaps a few other tricks, it will be even harder to ignore.
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Re: Clarisse newb questions

Unread postby esmith » Sat Mar 16, 2019 1:17 am

I think with current 4.0 ability one can duplicate any exterior lighting scenario, and with portals, IES lights and adaptive sampling....I believe that you can get any result you want. With Expressions available now, wouldn't it be possible to set up a pretty reasonable proxy for daylight at various "times" in a generic day on a generic part of the planet?

Or do you require a scientifically accurate lighting scenario based on actual placement of the interior/exteior and sun angle and such?
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