Black line

ahmadun · Post by **ahmadun** » Sun Jun 29, 2008 7:14 pm

I got a black line when i rendered a pool.[/img]

Kram1032 · Post by **Kram1032** » Sun Jun 29, 2008 9:58 pm

Looks like a Normal/-smoothing problem

try to make your volume a bit bigger than needed. It should intersect a bit with the pool walls. Also avoid sharp angles.

ahmadun · Post by **ahmadun** » Mon Jun 30, 2008 3:06 pm

That has been done, even setting up the precedence.
Yeah, the water was "Sprite"

I got the value of SSS from pdf indigo tutorial.

Kram1032 · Post by **Kram1032** » Mon Jun 30, 2008 11:03 pm

precedence shouldn't matter with diffuse materials - only speculars have a precedence value...

Just a thought, I guess it's *not* the problem but anyway:
Did you lower the MNCR to below 1000? I think, there are issues with very low MNCR and BiDir... Same with extremely low raybouncedepth.....

Btw: Your caustics are quite blurry and the reflections show a rather big lightsource... Try to make it a lot smaller if you want sharper caustics

zsouthboy · Post by **zsouthboy** » Tue Jul 01, 2008 12:12 am

Can you post the .blend ahmadun? Sorry to ask you again, but i'm not sure what's causing that..

CTZn · Post by **CTZn** » Tue Jul 01, 2008 4:30 am

It should intersect a bit

Actually if the vater wolume is entirely smoothed you need to put the outermost faces into the wall; if they are partially only the smoothing will show. Theorically you need 2 full rows hidden to get rid of the artifact, if that's the cause of it.

ahmadun · Post by **ahmadun** » Sat Jul 05, 2008 3:15 pm

thank you all...

Post by **OnoSendai** » Fri Jul 18, 2008 6:22 am

Thanks ahmadun.
I've run into this bug before.
I'm not sure what causes it.

Black line

Black line

Precedence

thank you

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