playing with caustics

Post your tests, experiments and unfinished renderings here.
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epilectrolytics
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Re: playing with caustics

Post by epilectrolytics »

provisory wrote: Sun Jun 23, 2019 2:40 pm Have you experimented with PGI caustic cache and volumes? I mean the light rays in the fog/smoke type? I can't get good results.
Thanks!

I have not yet tested caustic cache with scattering volumes.
OIDN does not work well with scattering yet, so I do this kind of work still in Cycles.
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Re: playing with caustics

Post by provisory »

epilectrolytics wrote: Sun Jun 23, 2019 4:21 pm I have not yet tested caustic cache with scattering volumes.
OIDN does not work well with scattering yet, so I do this kind of work still in Cycles.
OIDN works perfectly for me with scattering volumes and BiDir.
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Re: playing with caustics

Post by epilectrolytics »

I think I have not tested this combination either :oops:
My experience, in architectural settings with PathOCL is like what @FarbigeWelt describes here.

Once the current caustics craze is over, I will investigate the OIDN-with-volumes topic further :D
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Psor Prism

Post by epilectrolytics »

First attempt at the iconic cubo prism with hybrid path.
I didn't want to render longer than a day and chose 500 samples/frame which was probably no good idea because there is some visible noise from fireflies, also because OIDN was at 70%.
300 frames in 24h on Ryzen 2700X + RTX 2070.

Glass material is 80% dispersion + 20% roughness, a big and a small point light at the same location for lighting, no background.
In order to make looping possible after a 180° turn I had to mirror the ground plane material and even to remodel the prism which was not 100% symmetric causing a shift in caustic patterns between 0° and 180° :o
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Re: playing with caustics

Post by provisory »

Nice!
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Re: playing with caustics

Post by B.Y.O.B. »

Awesome :)
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Re: playing with caustics

Post by Racleborg »

Looks really nice! :)
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Re: playing with caustics

Post by epilectrolytics »

:D

Thanks!
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Re: playing with caustics

Post by CodeHD »

I watched it a couple of times now, and if there is any residual firefly noise, then I can tell you it is not noticable to someone who doesn't know where to look for it ;)
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Re: playing with caustics

Post by epilectrolytics »

You're right, the noise is visible in the image files and the Apple ProRes 422HQ master clip, but with the h.265 compression for the uploaded file it is mostly smoothed out.
0196.png
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