For those using the new beta ...

Krisidious · 23 Jun 2013, 23:32

I got a nice crisp image... Although my color threshold to 0.003. does not go down that far. it only goes to 0.01... and I didn't set my reflections because I had not edited my materials at all.

Stinkie · 24 Jun 2013, 06:01

@rvdkruk75 said:

And what should be the effect of these settings?

A considerable gain in speed. A quote from Stefan Laub, one of the Vray for C4D devs: "AA: as vray DMC is a very intelligent and complex system which deals not only with AA on the end,
but with any calculation in vray (GI, Glossy, lights, materials, image sampling), raising the max value of the AA often speeds up the scene greatly, as the max value reduces the need to sample the max subdivisions in lights and materials (as it is the same engine), a max AA of 100 renders faster than a max value of 4 if the scene uses area lights and glossy materials. the rendering might get a little more noisy when raising the AA max value, but you can compensate that in using the AA threshold value and lower it from 0.01(default) to 0.005 or lower. 1x100x 0.003 will be faster in many things than 1x4x 0.01 (!)"

I did some testing yesterday. Using 'orthodox' AA stettings, my test scene rendered in 2m20s. Using Laub's settings, it finished in 48s. I rendered the same scene at 10000 pixels wide, still using Laub's settings. It finished in ... 18 minutes.

andybot · 24 Jun 2013, 06:11

shoot, learn something new every day. Thanks for sharing the knowledge

Stinkie · 24 Jun 2013, 07:27

You're welcome. You tried the new 64 bit rendering? It works.

Quite happy with that. Now I don't have to buy C4D+Vray. Phew!

OSN58 · 24 Jun 2013, 09:57

stefanq · 24 Jun 2013, 11:20

Aahh Stinkie , this is an old school type of post, like in the days of Asgvis forum....
I'm getting nostalgic here. Remember Biebel, FreeAgent, Andeciula, Migz, Theofas, Thomthom, Nomeradona and many many others.....Remember Damien Alomar posts?

valerostudio · 24 Jun 2013, 12:43

This is a fantastic tip. I did a quick test and I am really impressed. It leaves me wondering why we haven't been told to do this before? I cant believe I just rendered a material with 256 subdivs in 3 minutes.

thomthom · 24 Jun 2013, 13:27

@OSN58 thanks for posting the comparisons.

How does this setup work with Catmull-Rom AA?

Stinkie · 24 Jun 2013, 15:24

@krisidious said:

Although my color threshold to 0.003. does not go down that far. it only goes to 0.01...

That's odd, Kris. It should be able to go lower than that.

@thomthom said:

How does this setup work with Catmull-Rom AA?

I suspect render time would go up a little.

thomthom · 24 Jun 2013, 17:40

But would the different type of AA affect the result - considering it's a sharpening filter...

Stinkie · 24 Jun 2013, 17:46

Hm, I'm inclined to think the visual difference would be negligible, but then I don't know that much about AA filters. I usually sharpen in PS, if at all.

OSN58 · 24 Jun 2013, 18:29

Unfortunately, it only works with 256 subdivs, render speed in other cases less.

Stinkie · 24 Jun 2013, 19:19

Still -pretty neat, huh?

designo_84 · 27 Jun 2013, 19:49

Hi all,
Btw i tried your way as you described specifically to render hi poly car model (proxy) but the render times increased significantly

rspierenburg · 28 Jun 2013, 11:16

I noticed the same as designo, increased render times with the new settings vs default.

andybot · 28 Jun 2013, 12:33

I'm guessing it depends on the GI lighting... I tried this on an interior and my render times doubled. Seems to work fine on a simple exterior scene, but you need to decrease the reflection depth too to make it work. Otherwise, the reflection of reflections really bogs it down too. ymmv