New Vray 3.4 AA bucket mode

[KiboOst]

With previous versions, we often take a scene to render multimatteelement only, turning GI, lights, reflections etc all off.
To get good mattes we used in such case Adaptative subdivision with Object outline option.

Now, this sampler AND this option are gone, and in such case mattes around object outline are ugly ...

I've tried different settings but can't get them right.

Just load max
create two sphere overlapping in the viewport
set one G-buffer 1, the other 2
turn GI off
set a MultiMatteElement
render -> ugly matte !

[Morne]

Open the script listener and stick this in there:

renderers.current.imageSampler_type=2

You can then highlight it and drag it to a toolbar where it will create a button for you. Next time you need it, just click the button it created. Check the vray settings, adaptive subdivision will be back temporarily and you can select your "object outline" again and whatever other settings you need in adaptive subdivision

[KiboOst]

wow !!
Why hide this then ? Even in expert mode ?

Many thanks !!!

[anthonyh]

hang on, adaptive subdivision is gone by default ? I agree, it`s so much quicker for rendering mattes I use it all the time. thanks for fix Morne, but removing it from the UI seems like a pretty bad move for me. besides my toolbar is already stacked with fixes and tools, I need less not more. I`ll probably have to use scanline again. bleeuurgh.
nb: interestingly if you open an old scene the adaptive subdivision rollout is there in the UI but the image sampler lister is blank. maybe it`s just an omission ?
anthonyh

[rivoli]

you can also turn off max subdivisions and use the bucket sampler as fixed aa. I never used the adaptive sampler, that's how I usually render mattes. few subdivisions, 4 for instance, are usually enough to get properly anti aliased objects' outlines.

[anthonyh]

Fixed AA would be even slower than adaptive I`d think. I just tried Adaptive vs Subdivision in 3.40.02 and the speed seems pretty comparable on a black and white matte scene now so maybe we don`t need it ? Still it`s a slippery slope, what`s next Irradiance Map next for the chop maybe ? Brute Force is now much quicker than before but sometimes IR quality is enough and speed is king. Clients tend to mess about a lot so flexibility is key.
anthonyh

[chadstevens]

I can literally see Vlado rolling his eyes haha

[rivoli]

Fixed AA would be even slower than adaptive I`d think.

I don't know, maybe. it's usually fast enough.