Clouds

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B.Y.O.B.
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Clouds

Post by B.Y.O.B. » Sat Sep 29, 2018 4:24 pm

I'm currently trying to render some clouds since I stumbled upon this talk: https://youtu.be/-d8qT5-1LOI
For this I needed the remap function.
I first formed it out of nodes (the new_math_textures branch has a new "divide" texture).
But this is a) clunky to use with a lot of nodes and b) slow.

So I implemented a new "remap" texture in LuxCore. This roughly doubled my Samples/Sec.

All of this is only in the new_math_textures branch so far, I need to write the OpenCL versions before I can merge anything into the master branch.
Attachments
2018-09-29_18-18-30.png
top right: remap function made with nodes, below: the new "remap" node
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Re: Clouds

Post by B.Y.O.B. » Sun Sep 30, 2018 11:04 am

My clouds don't look remotely like I want them, yet.
But here's a 12 minute render of the setup I have so far.
Attachments
clouds_03_rend1.jpg
2018-09-30_13-00-31.png
nodes of the scattering texture
2018-09-30_13-05-04.png
volume settings. My stuff is not modelled to scale yet, so ignore the step size unit.
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Re: Clouds

Post by B.Y.O.B. » Thu Oct 18, 2018 1:34 pm

Some new experiments with a simpler setup.
Attachments
clouds_2_01rend1.jpg
clouds_2_01rend2denoised.png
Unbenannt.PNG
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provisory
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Re: Clouds

Post by provisory » Thu Oct 18, 2018 7:00 pm

Looks great!
It doesn't use hdri (only the built-in sun and sky) does it?

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Re: Clouds

Post by marcatore » Thu Oct 18, 2018 7:25 pm

Yes, it's really a good result.

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B.Y.O.B.
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Re: Clouds

Post by B.Y.O.B. » Thu Oct 18, 2018 9:29 pm

provisory wrote:
Thu Oct 18, 2018 7:00 pm
It doesn't use hdri (only the built-in sun and sky) does it?
Yes, only the built-in sun and sky.
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FarbigeWelt
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Re: Clouds

Post by FarbigeWelt » Fri Oct 19, 2018 9:35 am

This is what I call innovation.

This procedural clouds look phantastic!
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Re: Clouds

Post by B.Y.O.B. » Thu Oct 25, 2018 8:54 pm

I just wanted to do some ground fog, but then I added in a few mountains and two cloud layers on top.
The mountain texture obviously needs to be improved, and the ground fog is a) to dense and b) seems to show some stepping artifacts on the left (although I changed step size and max steps and it didn't help).

Render time around 2 hours with Path OpenCL on HD 7970.
Attachments
ground_fog_02_rend1.png
raw
ground_fog_02_rend1comp.jpg
denoised + compositing
Unbenannt.PNG
Unbenannt2.JPG
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FarbigeWelt
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Re: Clouds

Post by FarbigeWelt » Fri Oct 26, 2018 3:44 pm

Astonishing!
I like the composition with the glares especially.
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Re: Clouds

Post by B.Y.O.B. » Fri Oct 26, 2018 4:12 pm

Thanks.
Remind me to upload the files after the next LuxCore release is out (you need the latest binaries, otherwise they don't work).
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