Fog Color Issue

[JonasNöll]

Hi,

I am getting an issue when using fog color (for example for water materials) in combination with objects with very flat angles pertruding the surface.
Attached you can see a picture. You can see for the left plane there is this unnatural thick dark line at the intersection. Once the plane has a steeper angle the line disappears.
The line disappears when the fog color is set to pure white.

[fixeighted]

It's to do with shadow bias, so will disappear if you set it to 0.
However, it doesn't work with only an hdri (or I can't figure out where to adjust any bias for the dome), so you need a sun also to make it go away.

Of course the dome's bias is in the sampling rollout, so all solved

[JonasNöll]

Awesome that works! Thanks That's the first time I ever had to change the bias so now at least I know what it's good for!

[fixeighted]

I knew that it had been reported before...just took me a while to locate the post, so credit goes to whoever solved it there