Fake caustics

[sawaxe]

My attempts to find a caustics. I used an original method, which offered vertigo1 here:
https://forum.corona-renderer.com/index.php/topic,3598.0.html

[maru]

Can you explain what you were trying to achieve? What I can see is:

1. glass objects not casting caustics
2. glass objects not casting caustics with faked caustics looking like refracted/reflected from water

To enable caustics for glass objects just turn on "caustics" checkbox in material's properties.

[sawaxe]

To enable caustics for glass objects just turn on "caustics" checkbox in material's properties.

I'm trying to achieve photorealistic caustic reflections on all surfaces, where they should be
Caustic glasses of course already exists, but for some reason it does not appear on other surfaces.
Please forgive me for my bad English. Description in Russian can be seen here:
http://sawaxe.blogspot.ru/

[ondrike]

sorry man, but your caustic faking looks absolutely horrible...what you achieved is floor with water caustic, which looks incredible funny :D 

[Chakib]

sorry man, but your caustic faking looks absolutely horrible...what you achieved is floor with water caustic, which looks incredible funny :D

+1, why using a water caustic fake projection map here ?! I can't believe this...

[sawaxe]

sorry man, but your caustic faking looks absolutely horrible...what you achieved is floor with water caustic, which looks incredible funny :D

I agree with you that fake caustic looks unrealistic
That's why I posted my attempts to find the caustic.
I hope somebody tell me the correct decision.

[ondrike]

correct way how to create caustic is really simple.. just check in your material caustic checkbox B-) and set render solver to Prograsive PT+PT or BiDir/VCM... that´s it

[sawaxe]

Thanks
All materials glass with caustics
I will use Prograsive PT+PT or BiDir/VCM now

[maru]

By the way, if you want FAKE caustics, then don't check the "caustics" checkbox in material's properties - you will get transparent shadows then.

[maru]

I made a small comparison of basic ways of producing caustics in Corona:
https://forum.corona-renderer.com/index.php/topic,3708.0.html
Hope it will be useful.

[sawaxe]

Thanks maru
It really is very useful information
I'll try to do in this direction caustics