How are the black stripes in SSR produced, and how can they be eliminated?

Questions
1

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Currently, the stripes in SSR can be mitigated by adjusting ‘ssr.selfCollisionNumSkip’ and ‘ssr.thickness’, but the results still look unnatural.

2

If you can setup a repro, we can try to help. But SSR has artifacts that can be hard to workaround sometimes. I guess you already read the doc about it:

https://doc.babylonjs.com/features/featuresDeepDive/postProcesses/SSRRenderingPipeline#how-to-deal-with-artifacts

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3

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Yes, I’ve reviewed the documentation and adjusted some parameters accordingly. Although there are still some imperfections.

4

A lot of artifacts would be mitigated if you could set a better noise texture to SSR. Like SSAO, a good blue noise makes artifacts more “natural”, the used sin-cos noise is repetative, makes waves and stripes.

Example (SSAO and dithering with blue noise)

ssao-Képernyőkép 2024-04-18 140636
ssao-Képernyőkép 2024-04-18 1406361394×841 64 KB

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5

I like the idea :slight_smile:

1 Like
6

Thank you. This is a bit challenging for me, but I will do my best to try it out.