Caustics playground!

[maru]

The newest 20.09 V5 daily features many caustics fixes and improvements compared to V4. You can check it out here: https://coronarenderer.freshdesk.com/support/solutions/articles/5000570015
Further fixes/improvements possibly coming.

[marchik]

The newest 20.09 V5 daily features many caustics fixes and improvements compared to V4. You can check it out here: https://coronarenderer.freshdesk.com/support/solutions/articles/5000570015
Further fixes/improvements possibly coming.

ofc i use the latest daily builds as always, and there is another strange thing - sometimes i have black square gaps in big caustic spots, i suppose it is because i use a lot of ornatrix hairs in the scenes, but this is just my guess) i will send some test scenes later, when i finish my current projects

[clemens_at]

corona 5 vs maxwell 5.
rendertime on both 53min.
consider me impressed!

[shoebu23]

Forum,

I know it's not ready for animations - but any tips/trick on how to leverage caustics in animations? I always get massive flickering-- are there any parameters in the advanced caustics settings that help?

[TomG]

I am not sure what you mean by not ready for animation - Recent Spaces would say otherwise :) https://corona-renderer.com/blog/recent-spaces-test-out-caustics-in-production-scenes/

It would help to see an example of the kind of flickering you mean.

[Nejc Kilar]

For animations I would probably suggest throwing more passes at it. Even if it looks fine, let it converge more than a still image would.

[Juraj]

I would suggest rendering caustics as separate pass that's 100perc. denoised. Btw AI denoising (Optix) does pretty cool conversion of caustics because the artifacts it produces sort of just look like more detailed caustics :- ).

I would even go one step further and render it as separate simplified scene (ultra simplified, only to produce caustics in best way and nothing else), and render that with Optix denoising, that way you don't even need many passes at all.
This setup is more laborous but you will get super clean caustics at fraction of time.

[shoebu23]

I am not sure what you mean by not ready for animation - Recent Spaces would say otherwise :) https://corona-renderer.com/blog/recent-spaces-test-out-caustics-in-production-scenes/

It would help to see an example of the kind of flickering you mean.

- Thank you for sharing, gave me the confidence this does in fact work well.  After looking back at the scene, I made some adjustments (it's caustics coming from condensation on bottles)-- and got much better results.  Essentially, the very very small drops were messing everything up so I separated those out and turned off caustics in their material setting.

I would suggest rendering caustics as separate pass that's 100perc. denoised. Btw AI denoising (Optix) does pretty cool conversion of caustics because the artifacts it produces sort of just look like more detailed caustics :- ).

I would even go one step further and render it as separate simplified scene (ultra simplified, only to produce caustics in best way and nothing else), and render that with Optix denoising, that way you don't even need many passes at all.
This setup is more laborous but you will get super clean caustics at fraction of time.

Appreciate the tips here on denoising!  As you suggested, I have been rendering them out as a separate simplified scene for just the caustics and layering it in during post, but never used Optix- will give that a go.

Thanks!

[bluebox]

Any news on the trello update or new dailies ? Have you guys decided on the new features yet ?

[rowmanns]

Any news on the trello update or new dailies ? Have you guys decided on the new features yet ?

Hi,

Due to recent events the roadmap might take a little longer to be updated..

However a new daily is coming soon :)

Thanks,

Rowan

[XRef]

Has anyone come across these black blocks in their caustics pass? (40 passes with default denoise)

[mferster]

never... weird! Does it show up as NaN when you right click on it in VFB?

Render looks neat though by the way.

[romullus]

There was few reports about black square artifacts in caustics on the forum. I believe the team is investigating and working on the fix.

[rowmanns]

Has anyone come across these black blocks in their caustics pass? (40 passes with default denoise)

Hi,

Are you able to send over your scene so we can investigate? Instructions on how to do this are in my signiture.

Thanks,

Rowan

[XRef]

Has anyone come across these black blocks in their caustics pass? (40 passes with default denoise)

Hi,

Are you able to send over your scene so we can investigate? Instructions on how to do this are in my signiture.

Thanks,

Rowan

I am not allowed to send due to a NDA. Is there any thing you can suggest?