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Loft K3 RC1

Posted: Wed Jul 05, 2017 2:14 pm
by Janusz Biela
I reduced scene (now is near 2 millions poly)
Still try optimize new setting in Core but this is quite fast and quality system.
To use it in other scenes simply use Load Items from Scene in Lightwave and select all K3 plugins. There is small bug in ls script messing with K3 plugins and reset settings. We will release soon fix for that. This happen randomly and very rare, I sent it to G.

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Re: Loft K3 RC1

Posted: Mon Oct 16, 2017 6:45 pm
by stretch
Just opened this with RC3, ( No settings changed ) seem to have a lot of grain? Suggestions on how to remove this, or Janusz could you update the Scene for us, great for testing and playing with K3.

Re: Loft K3 RC1

Posted: Tue Oct 17, 2017 8:30 am
by Janusz Biela
Yes no problem.
Noise is from background light source (Physky, HDRi or color)
We have done update for that of course.
Meanwhile G. make new additional update for Path Tracing Photons in K3RC4 (Path Passes tool) to improve accuracy in corners and get almost the same quality in Photon Map like in pure Path Tracing.
VCM is on the way as last part of engine....we go after that to real time post process and shader system.
Soon update!
Will try today update setting with info.

Re: Loft K3 RC1

Posted: Tue Oct 17, 2017 12:32 pm
by stretch
Thank you for the update Janusz.

If you are able to update the settings today that would be fantastic, and we look forward to RC4.

Re: Loft K3 RC1

Posted: Tue Oct 17, 2017 7:06 pm
by Janusz Biela
try this one:
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I need test more this setting because according to G. physic theory, amount of bounce lights should be at least 50 (!).
He told me that big amount of bounce light is normal and diffuse model should be adjusted to it.

For example white and flat wall in real World has white color but not pure light gray so color should be around 210.210.210 and diffuse maximum 90.
White concrete material diffuse according to physics is very low: 50-60 %, etc, etc.
With correct diffuse and big amount of bounce lights (at least 40) we should receive correct render. Also we should not be worry about colors because low material diffuse consume a lot Photons power and final bounce light is much lower.

Small amount of bounce lights create errors in corners (10 bounce lights):
test_PM.jpg (137.04 KiB) Viewed 2041 times
Effect should look that (Path Tracing 10 bounce lights):
test_Path_Tracing.jpg (163.64 KiB) Viewed 2041 times
....and this is also incorrect (!) correct with sampling but not correct with Global Illumination.

That`s why in RC3 we have some new tools for that and alert about low ratio photons.
The resolution of GI in Photon Mapping also is not so important like we thought. It can be 300 mm - more important is saturation by photons not to lose continuum of precache.

Re: Loft K3 RC1

Posted: Tue Oct 17, 2017 11:06 pm
by Janusz Biela
I made some technical renders: