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Procedural Edge Scratches
show user profile  herfst1
Hey, a friend asked me how to do {what title says} and all I could suggest was maybe a dirt map or the inverse of AO. But that's all theoretical, haven't tried it (no vray at work).

Here's a visual of the problem:

Yes, Ddo can add edge scratches easily but my friend wants to do this without having to unwrap and generate a normal map.

Cheers in advance.
read 687 times
12/4/2014 2:28:03 AM (last edit: 12/4/2014 2:28:29 AM)
show user profile  luxxeon
Vray, and most render engine with a AO or dirt map, will have the option to inverse the AO. So inverting the AO map in this case, and using it as a procedural mask for the scratches, will work to put them where you are intending.

My Youtube Video Tutorials:
read 672 times
12/4/2014 4:17:37 AM (last edit: 12/4/2014 4:17:37 AM)
show user profile  herfst1
Interesting, didn't realise there was a built-in inverse option. Will tell my friend and probably update you on the results tomorrow.

Cheers Luxxeon.
read 665 times
12/4/2014 4:52:17 AM (last edit: 12/4/2014 4:52:17 AM)
show user profile  herfst1
Yeah, we tested it with Mental Ray AO (with dent in the falloff) and then used that as a mask with a blend material and it works a charm.

[edit] here's a pic (note: 5 minutes work, to get a "real" result will take longer)

read 653 times
12/4/2014 6:31:41 AM (last edit: 12/4/2014 6:44:59 AM)
show user profile  reeves1984
can't tell if its jpg compression or not

Simon Reeves - VFX Artist & Blog
twitter <-- I work here

read 638 times
12/4/2014 12:42:41 PM (last edit: 12/4/2014 12:42:41 PM)
show user profile  herfst1
Haha. Both. But it doesn't matter, that's not the final result anyone would be happy with, just POC.
read 635 times
12/4/2014 12:49:53 PM (last edit: 12/4/2014 12:49:53 PM)
show user profile  FX
Tension Mods an option...control distribution with vertex colors etc...

Comprehensively covered in Viscorbels Old and Dirty tuts.

read 632 times
12/4/2014 1:05:30 PM (last edit: 12/4/2014 1:05:30 PM)
show user profile  9krausec
there was this tool that allowed you to quickly preview noise and vRay dirt maps in the viewport. DangerTools? ShadowTools? Something like this. Anyone?

edit: SoulBurn Tools?

- Portfolio-

read 605 times
12/4/2014 10:43:34 PM (last edit: 12/4/2014 10:43:53 PM)
show user profile  LionDebt
lol @ DangerTools
read 595 times
12/5/2014 12:08:13 AM (last edit: 12/5/2014 12:08:13 AM)
show user profile  Boomer

I'm very close to releasing a Curvature Map that will allow you do to such a thing as well.

Check out the previews here:
and here:

  Mathew Kaustinen

read 589 times
12/5/2014 12:18:53 AM (last edit: 12/5/2014 12:18:53 AM)
show user profile  Error404
Nice one Boomer :) -

read 583 times
12/5/2014 12:48:55 AM (last edit: 12/5/2014 12:48:55 AM)
show user profile  Nik Clark
This is awesome, Boomer. Max 2016's killer feature?...

Click here to send me an emailClick here to visit my websiteClick here to visit my photo gallery on Flickr

read 578 times
12/5/2014 1:25:18 AM (last edit: 12/5/2014 1:25:18 AM)
show user profile  herfst1
Damn that looks cool, Boomer.
read 570 times
12/5/2014 2:42:03 AM (last edit: 12/5/2014 2:42:03 AM)
show user profile  reeves1984
Not to be a pain, but with the magic of ICE I made a simialr thing in xsi, damn autodesk

(similar but probably a bit crap)

Simon Reeves - VFX Artist & Blog
twitter <-- I work here

read 553 times
12/5/2014 2:59:35 PM (last edit: 12/5/2014 3:08:07 PM)
show user profile  reeves1984
more useful reply

Simon Reeves - VFX Artist & Blog
twitter <-- I work here

read 537 times
12/5/2014 4:23:58 PM (last edit: 12/5/2014 4:23:58 PM)
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