Bloom and Glare artifacts

[mpazera]

Hello.
Is there a way to avoid this artifacts in extreme Bloom and Glare situations?

Octane_Post_Artifacts_001.zip

(51.03 KiB) Downloaded 153 times

[mpazera]

Post effect in octane is great, and it works almost all the time when combined with beauty pass, but in this situation it's creating those bending steps.
For me it looks like the post effect is calculated in 8 bit color space.
Could this be the reason for this artifacts?

[alecmaassen]

How many samples do you have?

[mpazera]

How many samples do you have?

It doesn't matter.
With more samples those artifacts are more defined.
I've tried every possible combination, it has to be some limit in calculations precision.

[pxlntwrk]

Hello,

I think you can tweak settings to achieve a cleaner result, but actually we can still notice the presence of artifacts especially in the light at low frequency temperature.

Octane_Post_Artifacts_001_pxl.zip

(46.13 KiB) Downloaded 144 times

[mpazera]

Hello,

I think you can tweak settings to achieve a cleaner result, but actually we can still notice the presence of artifacts especially in the light at low frequency temperature.

Octane_Post_Artifacts_001_pxl.zip

Yes, it can be tweaked but it looks like something is fundamentaly broken under the hood with post effect.
I've just finished a job using this tehnique and it wasn't pleasant.
I had to use some compositing tricks to hide a wall of color bending artifacts entering the frame with first pixels of iluminating lines.
I hepe this will be fixed in the futre, because when those artifacts are not visible, post effect could be very beautifull and hard to recreate in post.