Adaptive min samples

[Dariusz Makowski (Dadal)]

Heya

I've finally decided to crush on that slider and find out what does it actually do. And no matter what I type in, what AA threshold I set, what dmc amount /threshold I set. No matter what where and however I type in I cant get to see any change in render when I edit this amount to any other than 8... so what is it for and can I see an image example of before after possibly?

[vlado]

Here are two images rendered with Fixed AA, and 8 subdivs for VRayDirt.

Min. samples = 2; as you can see this is somewhat less accurate around the base of the teapot as there are shading points where V-Ray would just take 2 samples and stop because they both happen to hit something.


Min. samples = 8; here the result is more accurate as V-Ray will collect more data before deciding whether to stop sampling.


Best regards,
Vlado

[Dariusz Makowski (Dadal)]

Here are two images rendered with Fixed AA, and 8 subdivs for VRayDirt.

Min. samples = 2; as you can see this is somewhat less accurate around the base of the teapot as there are shading points where V-Ray would just take 2 samples and stop because they both happen to hit something.
[ATTACH=CONFIG]18352[/ATTACH]

Min. samples = 8; here the result is more accurate as V-Ray will collect more data before deciding whether to stop sampling.
[ATTACH=CONFIG]18351[/ATTACH]

Best regards,
Vlado

Ok I got it to work. But then its backwards isnt it?! The Adaptive Min Samples is actually Adaptive MAX samples. The min samples are the shader samples - 8 the max samples are Adaptive Min Samples. AHhhhh uhhhhhhh ! I was setting up stuff in my scenes backwards!

P.S. Still I cant get it to clean up my noise I've attached scene. I set it up to 512 hoping that Dirt shader will use as many samples as he need to clean up the noise but it fails. testMinSample_01.zip

[vlado]

Ok I got it to work. But then its backwards isnt it?! The Adaptive Min Samples is actually Adaptive MAX samples.

It is really minimum the number of samples that are taken before the adaptive logic kicks in. The shader subdivs determine the maximum.

Will take a look at the scene a bit later.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

It is really minimum the number of samples that are taken before the adaptive logic kicks in. The shader subdivs determine the maximum.

Will take a look at the scene a bit later.

Best regards,
Vlado

Right, ok this make sense to me. But this topic don't http://forums.chaosgroup.com/showthr...470#post612470