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Blender nearly realtime caustics, dispersion and thin-film effects

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marchik:
Guys, I suppose that we have some problems :D


Frankly, looking at something like this, I feel  annoyance and sadness, because I suspect that we will not see such a level of interactivity for these effects in our beloved Corona very soon.
And we don’t have a physically correct thin-film shader at all.
All this means that I "have to" learn new packages and engines to keep up my level, so I've just decided to poke around a little and share the emotion :D

No complaints about the development team, they do an excellent job. But reality is changing quickly.

Jpjapers:
This has to be some sort of fake shader effect no?
It looks very good regardless.

marchik:

--- Quote from: Jpjapers on 2023-06-26, 23:11:49 ---This has to be some sort of fake shader effect no?
It looks very good regardless.

--- End quote ---
I thought about it at first too. Something like the RT Caustics node in the latest versions of Substance Designer. But I cannot say this with certainty. The example from the video with caustics at the bottom of the pool looks quite convincing. In any case, it looks better than the fake shadows from the architectural glass shader.

This video made me so emotional also because at the very moment I saw it - I was rendering a separate caustic pass at 1400px resolution for the last 40 minutes, only to then open AI denoizer, AI upscaler and photoshop and draw masks by hand to leave the most "successful" parts. I'm not even talking about dispersion. And this brought me to despair :D

Jpjapers:
I cant see any way that it can be calculating physically correct caustics that quickly and the fact that you can art direct the caustics makes me think its totally fake.
I notice that thers no side by side comparison with actual rendered caustics vs the shader.

marchik:

--- Quote from: Jpjapers on 2023-06-27, 23:05:18 ---I cant see any way that it can be calculating physically correct caustics that quickly and the fact that you can art direct the caustics makes me think its totally fake.
I notice that thers no side by side comparison with actual rendered caustics vs the shader.

--- End quote ---
saw your comment under youtube video :D

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