Direct Light Sampling Cache errors

Use this forum for general user support and related questions.
Asticles
Posts: 132
Joined: Thu Jan 11, 2018 8:52 am

Direct Light Sampling Cache errors

Post by Asticles » Tue Nov 06, 2018 8:40 am

Hi all,

I'm having some strange artifacts with Direct Light Sampling Cache:
caching.png
I've created this blend file with the error:
caching.blend
(662.84 KiB) Downloaded 2 times
Edit: Have cleaned the file.

Best regards.
Last edited by Asticles on Tue Nov 06, 2018 5:55 pm, edited 2 times in total.
Salvador Ureña

stefdln
Posts: 29
Joined: Tue Oct 23, 2018 11:44 am
Location: FR

Re: Direct Light Sampling Cache errors

Post by stefdln » Tue Nov 06, 2018 8:48 am

I guess this has been exposed inthis thread
viewtopic.php?f=4&t=705
and corrected in the latest daily build (not sure about this one)
Cheers

Asticles
Posts: 132
Joined: Thu Jan 11, 2018 8:52 am

Re: Direct Light Sampling Cache errors

Post by Asticles » Tue Nov 06, 2018 8:59 am

Hi,

Thanks for your response, I've tested it with this build and the same happens.

https://github.com/LuxCoreRender/LuxCor ... tag/latest

Regards
Salvador Ureña

User avatar
Dade
Developer
Posts: 1458
Joined: Mon Dec 04, 2017 8:36 pm

Re: Direct Light Sampling Cache errors

Post by Dade » Tue Nov 06, 2018 10:06 am

It is a different problem I'm currently investigating.
Support LuxCoreRender project with salts and bounties

User avatar
B.Y.O.B.
Developer
Posts: 1730
Joined: Mon Dec 04, 2017 10:08 pm
Location: Germany
Contact:

Re: Direct Light Sampling Cache errors

Post by B.Y.O.B. » Tue Nov 06, 2018 12:30 pm

The .blend file is missing the textures.
Support LuxCoreRender project with salts and bounties

lacilaci
Posts: 346
Joined: Fri May 04, 2018 5:16 am

Re: Direct Light Sampling Cache errors

Post by lacilaci » Tue Nov 06, 2018 2:37 pm

Dade wrote:
Tue Nov 06, 2018 10:06 am
It is a different problem I'm currently investigating.
Is this the, hdri/skylight cache sampling issue? Can this be solved without fiddling with warmup samples?

Asticles
Posts: 132
Joined: Thu Jan 11, 2018 8:52 am

Re: Direct Light Sampling Cache errors

Post by Asticles » Tue Nov 06, 2018 5:47 pm

Sorry, I cannot redistribute the textures.

https://www.textures.com/download/pbr0075/133109

If you want to download them, but I've cleaned the file posted above. It also makes the same artifacts but without the textures.

Regards
Last edited by Asticles on Tue Nov 06, 2018 6:05 pm, edited 1 time in total.
Salvador Ureña

Asticles
Posts: 132
Joined: Thu Jan 11, 2018 8:52 am

Re: Direct Light Sampling Cache errors

Post by Asticles » Tue Nov 06, 2018 6:02 pm

cache2.jpg
Salvador Ureña

kintuX
Posts: 248
Joined: Wed Jan 10, 2018 2:37 am

Re: Direct Light Sampling Cache errors

Post by kintuX » Tue Nov 06, 2018 8:29 pm

Hope this helps ;)

DLSC_error-buggySkyGround.jpg

1. It only happens with the Sky.
2. It gets more prominent with 'Use Ground Color'.
3. Goes away when Ground Color is set to Black, while changing Ground Albedo Color results are fine (w/o splotches).

Edit: Missing description for Albedo versions: above is Black, below is White (if in doubt, observe sky coloration). ;)

User avatar
Dade
Developer
Posts: 1458
Joined: Mon Dec 04, 2017 8:36 pm

Re: Direct Light Sampling Cache errors

Post by Dade » Tue Nov 06, 2018 10:22 pm

kintuX wrote:
Tue Nov 06, 2018 8:29 pm
2. It gets more prominent with 'Use Ground Color'.
Very strange, I will check: it sounds like some kind of normal-related problem (aka taking light from "down" instead of "up").
Support LuxCoreRender project with salts and bounties

Post Reply