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Old 06-03-2013, 09:06 PM   #1
Ruben Nunez
West Melbourne, Australia
Join Date: Sep 2012
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Blur edges of refractive convex object


I'm working on a scene where there is, for lack of better words, a large glass vat/jar filled with liquid.
However, while I can get light refraction/stretching working fine, I can't get the edges to sort of 'smear' and blur like they do in real life.

For example:

See how the light bends and smears quite dramatically where the water is, but becomes clearer towards the center? That's the sort of effect I wish to achieve.

From what I could find [since I'm not even sure what this effect is called], I need to make use of a falloff map, but I have no idea where to go from there.

Any ideas?
Old 06-04-2013, 06:30 AM   #2
blank000's Avatar
Join Date: Sep 2011
Posts: 110
If i'm understanding you right, you need this (scroll down for "Water and Liquids" part)

(If i remember correctly somewhere in vray help there is this same or very similar explanation, so dig for it if you use vray).

Also, caustics.
Old 06-06-2013, 12:41 AM   #3
Ruben Nunez
West Melbourne, Australia
Join Date: Sep 2012
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Huh, thanks for that. (sorry about the late reply, got carried away with other projects >_>)

I had read that in the past, but it looks like I forgot it, cos I was using proper 'block' geometry instead of interfaces. =P

But either way, this didn't really solve the issue. =/
There is stretching, sure, but it's not blurred/smeared the way it's meant to.

I'm not 100% certain, but I don't think caustics will help much at all, in this instance.
Old 06-06-2013, 12:41 AM   #4
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