Black artifacts

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Dade
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Re: Black artifacts

Post by Dade »

Do you have an AMD GPU ? They are known to have problems with normal maps.
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Dade
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Re: Black artifacts

Post by Dade »

Taka wrote: Fri Nov 12, 2021 8:49 pm Thanks for your help. I re-packed the file so it should include the normal map.
It looks like the link on the first post isn't valid anymore, I think you have to post a new link.
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Re: Black artifacts

Post by Taka »

Here is a new link.
https://www.dropbox.com/s/jz03quj66ocwx ... blend?dl=0

I use Nvidia GTX1080Ti. I have a different Nvidia gpu at home so I will try with it to see if that gives me a different result.

Thanks,
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Dade
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Re: Black artifacts

Post by Dade »

Taka wrote: Mon Nov 15, 2021 4:07 pm Here is a new link.
https://www.dropbox.com/s/jz03quj66ocwx ... blend?dl=0

I use Nvidia GTX1080Ti. I have a different Nvidia gpu at home so I will try with it to see if that gives me a different result.
I'm getting this out of the box:

bump.jpg

I tested on a RTX 2070 Super and a GTX 980. Are you getting a different result ?
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Re: Black artifacts

Post by Taka »

I tried with my home computer (GTX Titan Black) and still got black artifacts...What could it be???
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Dade
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Re: Black artifacts

Post by Dade »

I'm using Linux, I will try if there is something different with Windows. Do you get the same artifacts even if you render with only CPU ?
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Re: Black artifacts

Post by Taka »

With CPU, I don't get the artifacts, neither with Luxcore 2.5, only with Luxcore 2.6. Here are the results:
From top, CPU with Luxcore 2.6 alpha - GPU with Luxcore 2.5 - bottom GPU with Luxcore 2.6 alpha.
Attachments
CPU_Lux2.6.jpg
GPU_Lux2.5.jpg
GPU_Lux2.6.jpg
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Dade
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Re: Black artifacts

Post by Dade »

It may be a driver version related problem. On Linux I have:

Code: Select all

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 470.82.00    Driver Version: 470.82.00    CUDA Version: 11.4     |
|-------------------------------+----------------------+----------------------+
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Re: Black artifacts

Post by Taka »

I updated the driver from 471.41 to 472.47, but the result was the same.
Thanks for your suggestion though.
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