I remember from my old Blender days a rendering mode called Approximate Ambient Occlusion. It rendered as an AO pass but extremely fast and smooth. This was extremely useful in scenario where you need to fake GI and to get a very quick render time. I find getting an AO pass via VrayDirt slightly cum…

Grand so - It seems like the 1.0 value has been slightly debunked! Where does something like motion blur subdivs fit into all this also? I can totally understand The AA sampler being able to reduce the number of material and Light subdivs of an object since the eye rays will hit a surface, but for …

The rays for sampling motion blur are very similar to the rays for AA. I usually leave motion blur to the adaptive DMC image sampler. Best regards, Vlado

Ah okay - they’re considered a “surface” thing in that case since it’s almost like increasing the hit area of a piece of geometry, and that then feeds into the various loops of light and material sampling?

I usually go with 0.7 adaptive, 0.004 noise threshold for final quality render, 0.95 and 0.01 noise threshold for tests.

How do you render AO pass with VrayDistanceTex? [image] HOW? You can’t for the moment - I just gave it as an example for the effect that is needed. Best regards, Vlado is it possible to do it now? i’m still on the vraydirt extratex element. it works fine, but is kind of slow and grainy, not…

The best consensus seems to be that it doesn’t play nice with the sampling of your average scene, so you’re better off doing a utility pass render with different aa settings for this and also using 32 bit output for your depth and point position passes. Distance tex still needs to be configured with…

Not so much that, it just seems like a lot of the big vfx vray users just do a second scene for passes that don’t need the materials and lighting of the main scene so they can use lower anti aliasing and also save in 32 bit without making huge exr files!

I usually do as you mention Jo. Quick to set up and quicker to render as well.

The latest version of mental ray can render out an AO pass on the GPU at the same time as rendering the beauty pass. Any chance of something like that finding its way into V-Ray? [GPU ambient occlusion (AO) and IBL w/ mental ray in 3ds Max 2014]

Aao

V-Ray V-Ray for 3ds Max Requests

kimgar September 9, 2013, 1:05pm 25

ah, ok thanks joconnell, i guess i’ll do an extra ao pass then.
but, uhm, what exactly do you mean by ‘utility pass’, are you referring to that ao script someone made ages ago?

3d max crash after install nightlie

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Aao

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