Milk (regular) optimized

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dag
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Re: Milk (regular) optimized

Post by dag » Wed Feb 02, 2011 3:18 pm

Looks biased to me. Gotta test irl to compare.

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suvakas
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Re: Milk (regular) optimized

Post by suvakas » Wed Feb 02, 2011 8:11 pm

Lemo wrote:30 days milk with a hundred percent unbiased physical renderer :lol:
Was it fresh when you started rendering? :)

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Re: Milk (regular) optimized

Post by Lemo » Wed Feb 02, 2011 10:59 pm

Yea, but I guess a cockroach or two drowned in the milk in the meantime...
Can't avoid the bugs

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dag
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Re: Milk (regular) optimized

Post by dag » Fri Mar 04, 2011 8:28 am

Well, that didn't work.
Lowfat milk, regular milk, lowfat choc milk, regular choc milk.
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milk.jpg

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Meelis
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Re: Milk (regular) optimized

Post by Meelis » Fri Mar 04, 2011 9:22 am

dag wrote:Well, that didn't work.
Lowfat milk, regular milk, lowfat choc milk, regular choc milk.
Absorption is in balance with scattering.
If u lower the scattering then absorption color takes over.

Still the renders look interesting.

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dag
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Re: Milk (regular) optimized

Post by dag » Tue Apr 19, 2011 10:39 am

Drink your milk boys.
Attachments
milk.jpg
chocolate_milk.jpg

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Re: Milk (regular) optimized

Post by StompinTom » Tue Apr 19, 2011 11:53 am

Looks delicious! :D

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suvakas
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Re: Milk (regular) optimized

Post by suvakas » Tue Apr 19, 2011 6:08 pm

Nice !!

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zeitmeister
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Re: Milk (regular) optimized

Post by zeitmeister » Tue Apr 19, 2011 7:27 pm

Great results, dag!
How long did you render, and in which mode?
Cheers, David



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dag
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Re: Milk (regular) optimized

Post by dag » Tue Apr 19, 2011 7:52 pm

Deliciously long...

Milk rendered to 20k spp in 131 hours and it's still a little noisy, and it doesn't seem to clear up anytime soon. Minimal absorption and high scattering is not a good combo.
Chocmilk 16k spp in 22 hours thanks to higher absorption.

Rendered with an i7 860 with MLT. Bidir is like drinking a gallon of syrup with that kinda scattering.

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Re: Milk (regular) optimized

Post by PureSpider » Tue Apr 19, 2011 10:19 pm

Amazing milk! :shock:
Can you share your materials please? 8)

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lycium
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Re: Milk (regular) optimized

Post by lycium » Wed Apr 20, 2011 12:19 am

For SSS you probably want to use single directional PT with MLT on - as you say bidir really slows to a crawl when there are so many scattering events (as it tries to connect each such event to every other between the eye and light paths).

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dcm
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Re: Milk (regular) optimized

Post by dcm » Wed Apr 20, 2011 12:34 am

lycium wrote:For SSS you probably want to use single directional PT with MLT on - as you say bidir really slows to a crawl when there are so many scattering events (as it tries to connect each such event to every other between the eye and light paths).
+1

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Re: Milk (regular) optimized

Post by Zom-B » Wed Apr 20, 2011 2:25 am

lycium wrote:For SSS you probably want to use single directional PT with MLT on - as you say bidir really slows to a crawl when there are so many scattering events (as it tries to connect each such event to every other between the eye and light paths).
Hmmm, quite interesting.. I thought BiDir does help here since it optimized the ray paths.

Is this BiDir thing a general SSS issue, or just tilt over on a certain point of SSS strength?
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Re: Milk (regular) optimized

Post by lycium » Wed Apr 20, 2011 2:49 am

In general when you have highly scattering media, bidir will become quite slow.

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