Texture Baking Noise

[jujubee]

I'm trying to bake an interior scene following the Vray tutorial here:
http://www.spot3d.com/vray/help/150S...king_part1.htm

The floors and ceiling came out great, but I'm having grainy noise problems with the walls which have a much greater surface area.

I turned up various settings even higher, and still get noise.

I tried pushing the texture export up to 8000x8000 and the noise on the wall pieces are still there.

Has anyone encountered this and are there any workarounds besides chopping my scene back up into smaller pieces?

[Neilg]

Might help if you post an image of the noise, it could be anything.

[jujubee]

Here ya go - a small section of the scene. (Told you it was noise lol...)
I think I just need to separate the walls and make multiple maps. This was the biggest I could get it. I 'm trying to do all of the walls at once. Even so, I thought it would have a much smoother result.

[vlado]

Have you tried to determine what causes the noise (is it coming from a direct light shadow, or from GI, or from something else)?

Best regards,
Vlado

[jujubee]

It appears everywhere and in every single hallway and room. There's plenty of lights in the scene. When rendered "normally" from a physicalcam, everything looks fine.

I just turned off GI, and the noise went away. Before that, I tried a couple different methods with it on - IR/LC and Brute Force. I also had subdivisions set to very high.

In the scene I use a VraySun, and many Vraylights for the interior.

[sea2stars]

Does turning off the VraySun but leaving on GI get rid of the noise?

[jujubee]

It doesn't happen to the ceiling and floor, so I'm a but puzzled. In my mind, either it has to do with the actual geometry or simply because the walls take up much greater surface area than the floor and ceiling.

[Neilg]

Flipped normals, double faces?
Have you gone through and turned all artificial lights off, checked, then turned environment light off, etc?

I wasnt doubting that it was noise by the way - just that you can usually tell what type it is by looking at it.

[jujubee]

Turned off GI and the problem went away - whatever that means...
Again, same settings for ceiling and floor and it worked fine.

[vlado]

OK then; if you can get me the scene to vlado@chaosgroup.com it will be very useful to try and fix the problem.

Best regards,
Vlado

[jujubee]

Hi Vlado. Thanks. I sent it just now.