this noise problem in vray 3.3

[themaxxer]

this noise problem in vray 3.3 is a big problem! in bright areas with a simple bright material vray produces a lot of noise (BF/LC default setup). I read about the GGX reflection problem produces a lot of noise to in certain angles, but vray is also producing a lot of noise in bright areas...
I had to switch to my old workflow IR/LC and the old subdiv per object to get clean renderings... that's sad, because the BF/LC workflow is so much easier.
it doesn't matter if you render with or without subpixelmapping...

are there fixes soon?

best regards
themaxxer

[vlado]

If you mean the issue that comes up if you have "subpixel mapping" and "clamp output" enabled, then yes - we are working on a fix. There's no need to switch to switch to irradiance map for that; simply turning off "subpixel mapping" should be enough.

If you don't have "subpixel mapping" enabled, then it would be best to get me an example scene to vlado@chaosgroup.com as I'm not sure what issue you are talking about.

Best regards,
Vlado

[themaxxer]

thanks for reply.
it's not only the subpixel mapping, it's also on bright areas http://c2n.me/3wslcgQ.png I know this is worse quality, but I don't get this clean.
but this with clamp output I didn't know. I try to disable both for testing.

best regards
themaxxer

[Zdravko.Keremidchiev]

Could attach or send us an example scene?

[themaxxer]

here is a part of the scene, hope it's reproduce able.
https://dl.dropboxusercontent.com/u/57470220/noise_2016.04.04_12.25.35.zip

thanks.

best regards
themaxxer

[vlado]

Do I need any of the textures to reproduce the issue?

[EDIT] I see that you do have subpixel mapping and clamp output enabled, so yes - this will be fixed. I will let you now as soon as I have a build.

Best regards,
Vlado

[hubmer3]

bump!
is there any news?
i got it on almost every interior scene.

thanks

[vlado]

Does it go away if you turn off the "subpixel mapping" option?

Best regards,
Vlado

[hubmer3]

the problem here is

first image
subpixelmapping off
= very smoth image only in very bright (reflective) areas are fireflies are showing
render time 0:24sec

second image
subpixelmapping on
= very noisey image no fireflies are showing
render time 0:13sec

vray 3.30.03 (i know there is a newer version but i dont mention something in the changelog what can slove this!?)

[samuel_bubat]

Do I need any of the textures to reproduce the issue?

[EDIT] I see that you do have subpixel mapping and clamp output enabled, so yes - this will be fixed. I will let you now as soon as I have a build.

Best regards,
Vlado

Hello Vlado,

can you give a rough estimate when this problem will be fixed ? We´re going to start an annual project that will run till october and I´d really like to update before.

[vlado]

can you give a rough estimate when this problem will be fixed ?

I can get you a build around the end of the week. If you don't have access to the stable builds on the nightly builds server, let me know and we'll arrange that for you. I will let you know when the builds are out.

Best regards,
Vlado

[hubmer3]

well thanks vlado!
i dont have access to the nightlies till now. can you arrange it?

thanks for your fast support

[samuel_bubat]

I can get you a build around the end of the week. If you don't have access to the stable builds on the nightly builds server, let me know and we'll arrange that for you. I will let you know when the builds are out.

Best regards,
Vlado

Sounds great. I´d like to get a fix for the problem. Just contact me when it´s available.

[hubmer3]

The problem also shows up on exteriors....
But I found a quick and dirty-fix.
Use Dust&Scratches in Photoshop, Radius 1px, threshold 60levels. maybe in your case other numbers will do the job...its not ideal for a production image but for a wip its ok



any news about a fix?

[hubmer3]

i made a small test for a workaround.
the only way is to turn off subpixel mapping and raise your renderquality settings.....