You remenber My last renderer war Cycles vs luxcore. Just now wanted to make a Luxcore vs Octane now but that would be really really destroying and pretty unfair to luxcore. The reason behind : clamping
While Luxcore and cycles tend to loose lighting quality and information Octane is able to keep almost everything even in very low clamping value scenario.
Octane Clamping : 1000
Octane Clamping : 100
Octane Clamping : 10
Octane Clamping : 1
As you can see at same render time (5mn) you get a clean image and this is without any caching. In such extreme clamping case Luxcore would loose lot of indirect and direct light information as clampling is cut the same way for both.
Maybe some fireflies filtering like in clarissefx can help.
https://www.clarissewiki.com/4.0/firefl ... ering.html
Better Clamping in Luxcore
Re: Better Clamping in Luxcore
Can you post noise-free images without clamping vs. clamping = 1?
Re: Better Clamping in Luxcore
40Mn Render no clamping aka (1000000)/ it is the limit
Clarisse Fx or Octane one ? is it better If yes can we add it ?
Re: Better Clamping in Luxcore
Not noise-free, but I guess it's enough to estimate the final brightness.
Clamping = 1 loses quite a bit of brightness compared to this, from what i can see.
Would the clamping in LuxCore right now be much different?
Re: Better Clamping in Luxcore
Of course there is a small loose but compared to the speed and preserved light quality it by far Better.Clamping = 1 loses quite a bit of brightness compared to this, from what i can see.
Would the clamping in LuxCore right now be much different?
Look luxcore at clamping 1 took 12 minute and stay noisier:
Clamping at 0.2 is less noisier and took 7mn(compared to 5mn clean octane) but lighting is crashed :
Seriously they don't handle clamping the same way and i can feel it quickly while working with it.
Re: Better Clamping in Luxcore
Edit i messed up resolution.
but you can see how it look.
Note there is no Caching on luxcore of course.
but you can see how it look.
Note there is no Caching on luxcore of course.
Re: Better Clamping in Luxcore
Luxcore + caching clamping at 1 is still the boss but it isn't ideal to be match in speed when you run Gi caching by a Brute force solution.And Octane isn't using optix in my test
I think between Clamping MIS and other method there is lot of room for improvement.
I think between Clamping MIS and other method there is lot of room for improvement.
Re: Better Clamping in Luxcore
Brute force unclamped 50 mn luxcore :
Re: Better Clamping in Luxcore
If I add the their sources...
The PDF based clamping is an old JeanPhi's idea, he tried an implementation based on local vertex path clamping and it didn't worked well however I think the idea may work if considering the complete path PDF.