Old 3.2 / new 3.3 behavior switcher

[algato]

Hello,
is there a MaxScript to switch the old 3.2 and new 3.3 behavior of an already opened Scene?


# For old 3.2 behavior:
renderers.current.twoLevel_adaptiveMethod=0
renderers.current.progressive_dynNoiseThreshold=0 # ??
renderers.current.options_rgbColorSpace=0 # 0= old CIE RGB

# For new 3.3 behavior:
renderers.current.twoLevel_adaptiveMethod=1
renderers.current.progressive_dynNoiseThreshold=30 # ??
renderers.current.options_rgbColorSpace=1 # 1=new sRGB

Kind regards
Alex

[vlado]

There are a couple of other things (use local subdivs and reflective caustics), so it would be something like:

# For old 3.2 behavior: 
renderers.current.twoLevel_adaptiveMethod=0
renderers.current.progressive_dynNoiseThreshold=0	# progressive sampler samples uniformly pixels above the noise threshold
renderers.current.options_rgbColorSpace=0 # 0= old CIE RGB
renderers.current.dmc_useLocalSubdivs=true
renderers.current.gi_reflectCaustics=false # unless you had them enabled
renderers.current.imageSampler_shadingRate=2 # unless you put something else here

# For new 3.3 behavior: 
renderers.current.twoLevel_adaptiveMethod=1
renderers.current.progressive_dynNoiseThreshold=30 # progressive sampler gradually reduces the noise threshold when 30% of all pixels are left
renderers.current.options_rgbColorSpace=1 # 1=new sRGB
renderers.current.dmc_useLocalSubdivs=false
renderers.current.gi_reflectCaustics=true
renderers.current.imageSampler_shadingRate=6

Best regards,
Vlado

[algato]

wonderful

Thank you Vlado

[LudvikKoutny]

renderers.current.twoLevel_adaptiveMethod=1

What does this do? :O

[vlado]

It switches the adaptive image sampler from the old min/max algorithm to the new variance-based one.

Best regards,
Vlado

[hammerbchen]

Correct me if I am wrong. So basically there is no specific button or dropdown menu I can turn on "Variance-based adaptive sampler"?

If I want to compare VRay 3.2 and 3.3, all I can do is run the script above? to see the benefit of using Variance-based...

Chen

[NicoC]

There are a couple of other things (use local subdivs and reflective caustics), so it would be something like:

# For old 3.2 behavior: 
renderers.current.twoLevel_adaptiveMethod=0
renderers.current.progressive_dynNoiseThreshold=0	# progressive sampler samples uniformly pixels above the noise threshold
renderers.current.options_rgbColorSpace=0 # 0= old CIE RGB
renderers.current.dmc_useLocalSubdivs=true
renderers.current.gi_reflectCaustics=false # unless you had them enabled
renderers.current.imageSampler_shadingRate=2 # unless you put something else here

# For new 3.3 behavior: 
renderers.current.twoLevel_adaptiveMethod=1
renderers.current.progressive_dynNoiseThreshold=30 # progressive sampler gradually reduces the noise threshold when 30% of all pixels are left
renderers.current.options_rgbColorSpace=1 # 1=new sRGB
renderers.current.dmc_useLocalSubdivs=false
renderers.current.gi_reflectCaustics=true
renderers.current.imageSampler_shadingRate=6

Best regards,
Vlado

Thanks, Vlado !

[Oleg_Budeanu]

Deleted. Thought settings are sticky *somehow* , but looks like they need to be set up on each 3dsmax startup. So here comes another question - how i can override renderers.current.options_rgbColorSpace=0 to be default ?

[vlado]

Deleted. Thought settings are sticky *somehow* , but looks like they need to be set up on each 3dsmax startup.

The option is saved and loaded with a scene, so once you set it, there is no need to do anything anymore.

If you want it to change the default option, you can save a V-Ray preset called "default" (without the quotes) - V-Ray will load it every time you create a new scene or reset Max. The color space option is part of the "Global switches" rollout, so you can just save that one into the "default" preset.

Best regards,
Vlado

[dlparisi]

The color space option is part of the "Global switches" rollout, so you can just save that one into the "default" preset.

Is this incorporated into of the "Legacy sun/sky/camera" checkbox?

[vlado]

Is this incorporated into of the "Legacy sun/sky/camera" checkbox?

No; that option is used to keep the even older sun/sky model that we had originally in V-Ray 1.4x (surprisingly, there are still a few scenes floating around that use that). We probably need to hide that option nowadays.

Best regards,
Vlado

[dlparisi]

Silly me, I thought you meant there was a checkbox in the Global switches rollout that I just wasn't seeing. Rereading it now I see you meant that the "renderers.current.options_rgbColorSpace" setting just gets saved as part of the "options" group. Thanks.

[algato]

Hello,
how can I determine whether a allready resaved scene is still using the 3.2 or the new 3.3 parameters ?

The dialog box with the selection appears only when i open a older file at the first time (Did I correctly watched it ?)

Kind regards
Alex

[Zdravko.Keremidchiev]

You can check whether you are using the new variance-based adaptive sampler by executing this command in the MAXScript Listener
renderers.current.twoLevel_adaptiveMethod

if it returns 1 it means you are using it, if it returns 0 it means you are using the old sampling.