Author Topic: Caustics Multiplier  (Read 1133 times)

2023-01-30, 17:00:09

CharlyRT

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Hello guys, do u have any plans to include a caustic multiplier?
I know we can multiply the channel in Post but it would be pretty useful to use it directly from the VFB.
Thanks for all your hardwork.

2023-01-31, 13:10:06
Reply #1

Avi

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Hi,

Can you please elaborate on how exactly you aim to use this multiplier for caustic from VFB? Is this something you only want to apply in post effects or in a pre-calculation stage of caustics? Something like Light mix? Have you tried Caustics solver settings? These are only visible when you have "Enable devel/debug mode" on in the Corona system settings.
Arpit Pandey | chaos-corona.com
3D Support Specialist - Corona | contact us

2023-01-31, 20:24:47
Reply #2

CharlyRT

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thanks for answering Avi:

sometimes caustics are very subtle due to pool height, lighting conditions, or material setup, etc, the solution for this is to render the channel and duplicate it on Post, i made a mistake saying to use it directly from VFB, what i meant was to have a multiplier value for this porpuse, for ecxample, Vray has it in order to multiply it when u cannot see it and have it in render without a render channel in post.

2023-02-01, 11:37:11
Reply #3

Avi

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Hi,

Thanks for the explanation. I understand what you need.

Have you tried increasing the "Max Photon/Iteration" in the Caustic solver settings and see if it helps?
Arpit Pandey | chaos-corona.com
3D Support Specialist - Corona | contact us

2023-02-01, 13:41:38
Reply #4

maru

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Are you interested in a multiplier for caustics intensity (making caustics brighter or fainter) or in a multiplier for the number of photons (making caustics appear with better quality faster)?
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2023-02-01, 16:13:51
Reply #5

pokoy

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Are you interested in a multiplier for caustics intensity (making caustics brighter or fainter) or in a multiplier for the number of photons (making caustics appear with better quality faster)?
I'm reading it as intensity/brightness... Changing the photon count can lead to quite unpredictable behavior such as (much) increased render times, noisiness and mostly leads to a different caustic look/result, probably not what OP means if he states he wants them to appear brighter.

+1 from me, having to resort to render separate channels and do it all in post is indeed cumbersome.

2023-02-01, 17:12:44
Reply #6

TomG

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I personally like this idea. I often find myself doing Render Elements to allow me to apply brightness/exposure to the caustics in post, would be nice to multiply their brightness in the render itself without the post step being necessary (but still an option, of course :) ).
Tom Grimes | chaos-corona.com
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2023-02-17, 06:14:36
Reply #7

Avi

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Hi,

We have logged this feature request in our system to be further reviewed by our Dev's. If there will be any update on this, we will let you know.

(Internal ID=1060673630)
Arpit Pandey | chaos-corona.com
3D Support Specialist - Corona | contact us

2023-02-17, 16:17:54
Reply #8

CharlyRT

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Thanks Avi