Author Topic: Study tests with absorption and translucency (A6)  (Read 10037 times)

2014-03-22, 06:03:40

tiagodmed

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Tests with Absorption, translucency, translucency+Absorption and translucency+Absorption+refraction with glossiness

3ds Max file (2014 corona alpha 6): https://dl.dropboxusercontent.com/u/2067306/corona_material/absorption_translucency.max

Translucency:






Absorption:




Translucency+Absorption:






Translucency+Absorption+Refraction:




Example of practical application:
« Last Edit: 2014-03-22, 06:09:44 by tiagodmed »

2014-03-22, 09:06:55
Reply #1

Paradox2013

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Thank you! Very cool!
P.S I'm from Russia, so my English is very bad! : D

2014-03-22, 20:02:50
Reply #2

borisquezadaa

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Thanks!... i was struggling with this from some time now.

Now i get it.
What i do with Corona My Corona post of random stuff rendering
WARNING: English.dll still loading...

2014-03-22, 21:59:54
Reply #3

klipanos

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2014-03-24, 14:30:21
Reply #4

rozumny

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Can you please show the settings of the greenery material on the beautiful picture with trees?
How did you make it shine so nicely with the sun on the background?

2014-03-24, 21:42:30
Reply #5

nerofaora

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i wonder if translucency can be a substitute for sub surface scattering

2014-03-25, 01:08:45
Reply #6

tiagodmed

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Can you please show the settings of the greenery material on the beautiful picture with trees?
How did you make it shine so nicely with the sun on the background?

There is no secret in the materials or in the light.
I used only one corona sun with corona sky, and for materials of leaves only translucency.  The trick to have variation is to use a texture in channel translucency.
The value of "Fraction" I was increasing until you reach the result I liked, this value varies according to the type of leaf.




i wonder if translucency can be a substitute for sub surface scattering

Yes you can, depending on your need you can use any of the 4 above combinations  (Absorption, translucency, translucency+Absorption and translucency+Absorption+refraction with glossiness). As the final result depends on many factors, in each case you will need to do many tests until you reach the optimal setting.

Another example are these lego bricks, where I used a bit of translucency to achieve an effect of SSS: http://corona-renderer.com/forum/index.php/topic,3218.0.html


« Last Edit: 2014-03-25, 01:17:58 by tiagodmed »

2014-03-25, 02:00:53
Reply #7

tiagodmed

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A very fast test to make a fake SSS:


2014-03-25, 09:54:32
Reply #8

rozumny

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tiagodmed! thanks a lot for the explanation and the material itself!!! we are doing a few garden scenes, so it will be very helpful!!

2014-03-25, 10:05:24
Reply #9

maru

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2014-03-26, 15:28:55
Reply #10

tiagodmed

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Yes you can just use translucency. But in the same way that an SSS shader work best using maps to delineate the effect with fake techniques it is more necessary.

2014-03-26, 22:25:20
Reply #11

Polymax

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long time ago discovered this fake...maybe in the summer 2013 :)
Corona - the best rendering solution!

2014-03-27, 01:03:00
Reply #12

tiagodmed

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long time ago discovered this fake...maybe in the summer 2013 :)

Great example of fake sss with refraction + absorption

2014-04-15, 14:01:45
Reply #13

CGHOT

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