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Many pixels are not rendered in 4.00.0.137

Posted: Thu Dec 27, 2018 7:46 pm

by Uhlhorn

Hi there,

I found an issue in Octane 4.00.0.137 for Modo. Many 2 by 2 pixels are not rendered in Octane:

: Many 2 by 2 pixels are not rendered in Octane.

Here is the full size rendering with many holes:

: Original rendering with holes.

Re: Many pixels are not rendered in 4.00.0.137

Posted: Fri Dec 28, 2018 5:11 am

by face_off

Hi - can you try with the latest release please (4.01.1.138).

Paul

Re: Many pixels are not rendered in 4.00.0.137

Posted: Fri Dec 28, 2018 2:35 pm

by Hesekiel2517

Did you use adaptive Sampling? Try to increase the "min. sampling" to avoid errors in the noise estimation in very noisy scenes.

Re: Many pixels are not rendered in 4.00.0.137

Posted: Fri Dec 28, 2018 6:52 pm

by Uhlhorn

Hesekiel2517 wrote:Did you use adaptive Sampling?

Yes. And without adaptive sampling the issue does not appear, I just figured out.

Hesekiel2517 wrote:Try to increase the "min. sampling" to avoid errors in the noise estimation in very noisy scenes.

It does not solve all, it makes it better.
So I made some tests:

: Minimum Samples: 512 Pixel Grouping: none

: Minimum Samples: 512 Pixel Grouping: 2 x 2

: Minimum Samples: 512 Pixel Grouping: 4 x 4

: Minimum Samples: 2048 Pixel Grouping: none

: Minimum Samples: 2048 Pixel Grouping: 2 x 2

: Minimum Samples: 2048 Pixel Grouping: 4 x 4

: No Adaptive Sampling