clamping light in luxcore

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lacilaci
Posts: 81
Joined: Fri May 04, 2018 5:16 am

clamping light in luxcore

Post by lacilaci » Sat Aug 11, 2018 10:52 am

So since we can observe how even high value for clamping does not remove fireflies but yet can flatten highlights heavily.

I was thinking, how does this clamping value work. Does it clamp the strength of both direct and indirect samples in general?

If that's true, can we have an option to clamp only indirect light?
Cycles has this option and it's a great help for removing fireflies and some bright noise, while it doesn't ruin the overall look where direct light hits.
Also corona afaik only clamps indirect light too not eve allowing direct light clamping(not completely sure how it works though).

I think, especially using the upcoming indirect light caching, clamping only secondary bounces could be pretty important.

Sorry if my assumption on how it works is wrong.

lacilaci
Posts: 81
Joined: Fri May 04, 2018 5:16 am

Re: clamping light in luxcore

Post by lacilaci » Mon Aug 13, 2018 6:21 am

Ok, some time after playing with luxcore and clamping. I actually kinda like how it works. The performance boost can be very very impressive.

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B.Y.O.B.
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Re: clamping light in luxcore

Post by B.Y.O.B. » Mon Aug 13, 2018 6:55 am

Dade once made a video about it: https://www.youtube.com/watch?v=9KqzfxgMRuA
Since the old forum is apparently lost, the explanation linked in the video description is no longer available. If I remember correctly, it is a new clamping technique invented by Dade.

However, having the control to clamp indirect and direct light separately might indeed be useful.
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