[Sidefx-houdini-list] Sidefx-houdini-list Digest, Vol 434, Issue 1

Jordan Halsey jordanhalsey at gmail.com
Sat Apr 26 18:37:08 EDT 2014


Well, the easiest way I have found is to create a super high frequency
noise with a power function and output a parameter called flake or whatnot
and read it back into the shader where I pipe it into a specular and use
the coat option to get the shiny clearcoat. You will need a rest position
or space transformations. You can multiply the effect with an edge falloff
or a ramp.

You can also use pountclouds from a scatter but I found the noise method to
work quite well.

Hope that makes sense..
On Apr 26, 2014 3:27 PM, "Hanton" <hanton.yang at gmail.com> wrote:

> Thanks for your link, Jim.
>
> I've also found it in odforce and the "Efficient Acquisition and Realistic
> Rendering of Car Paint" paper.
>
> I'm not only want to see flakes, but also know how to make them in VOP.
>
> Sorry, I should make my question more specific.
>
> Hanton
>
>
> On Apr 27, 2014, at 12:00 AM, sidefx-houdini-list-request at sidefx.comwrote:
>
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> > Today's Topics:
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> >   1. How to make flake in Mantra (Hanton)
> >   2. Re: How to make flake in Mantra (jim at rutherfordfx.com)
> >   3. Re: How to make flake in Mantra (jim at rutherfordfx.com)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Sat, 26 Apr 2014 22:28:18 +0800
> > From: Hanton <hanton.yang at gmail.com>
> > Subject: [Sidefx-houdini-list] How to make flake in Mantra
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID: <9BD55F6B-5039-41A7-BB05-30B774176545 at gmail.com>
> > Content-Type: text/plain;     charset=us-ascii
> >
> > Hi everyone,
> >
> > How to make Renderman/VRay equivalent flake in Mantra, like this
> http://renderman.pix..._Car#Car Paint?
> >
> > Thanks!
> >
> > Hanton
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Sat, 26 Apr 2014 07:39:02 -0700
> > From: <jim at rutherfordfx.com>
> > Subject: Re: [Sidefx-houdini-list] How to make flake in Mantra
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <
> 20140426073902.a1edf2da5d8c3353817df23e737e25b8.b6515862da.wbe at email15.secureserver.net
> >
> >
> > Content-Type: text/plain; charset="utf-8"
> >
> >
> >
> > ------------------------------
> >
> > Message: 3
> > Date: Sat, 26 Apr 2014 07:46:06 -0700
> > From: <jim at rutherfordfx.com>
> > Subject: Re: [Sidefx-houdini-list] How to make flake in Mantra
> > To: sidefx-houdini-list at sidefx.com
> > Message-ID:
> >       <
> 20140426074606.a1edf2da5d8c3353817df23e737e25b8.ae0a26b5a8.wbe at email15.secureserver.net
> >
> >
> > Content-Type: text/plain; charset="utf-8"
> >
> > there's a car paint shader on the old sidefx exchange
> > http://www.sidefx.com/index.php?option=com_wrapper&Itemid=152
> > Jim
> >
> > -------- Original Message --------
> > Subject: [Sidefx-houdini-list] How to make flake in Mantra
> > From: Hanton <hanton.yang at gmail.com>
> > Date: Sat, April 26, 2014 7:28 am
> > To: sidefx-houdini-list at sidefx.com
> >
> > Hi everyone,
> >
> > How to make Renderman/VRay equivalent flake in Mantra, like this
> > http://renderman.pix..._Car#Car Paint?
> >
> > Thanks!
> >
> > Hanton
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> > End of Sidefx-houdini-list Digest, Vol 434, Issue 1
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