Direct Light Sampling Cache errors

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Asticles
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Direct Light Sampling Cache errors

Post by Asticles »

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 235 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.
stefdln
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Re: Direct Light Sampling Cache errors

Post by stefdln »

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
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Re: Direct Light Sampling Cache errors

Post by Asticles »

Hi,

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

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

Regards
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Dade
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Re: Direct Light Sampling Cache errors

Post by Dade »

It is a different problem I'm currently investigating.
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B.Y.O.B.
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Re: Direct Light Sampling Cache errors

Post by B.Y.O.B. »

The .blend file is missing the textures.
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lacilaci
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Re: Direct Light Sampling Cache errors

Post by lacilaci »

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
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Re: Direct Light Sampling Cache errors

Post by Asticles »

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.
Asticles
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Re: Direct Light Sampling Cache errors

Post by Asticles »

cache2.jpg
kintuX
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Re: Direct Light Sampling Cache errors

Post by kintuX »

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). ;)
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Dade
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Re: Direct Light Sampling Cache errors

Post by Dade »

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").
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