Re: Any tips on rendering a pearl 2005-07-07 - By pmiinalainen
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One tip is to use a colorful texture map as reflection map. This
helps to fake the pearl's iridescent features.
In photoshop, create image that is sized 8 pixel x 8 pixels. Zoom as
close as you get. With 1 pixel pencil paint each pixel with some
bright color (red, blue, green, yellow). Enlarge it to 800x 800
pixels and if still necessary, apply gaussina blur. Apply this to
reflection channel and adjust image brightness to control amount of
reflection. Similar reflection map is essential for many metal
shaders.
Make a noise bump map of very high density and small contrast or use
blurred reflection.
Natural pearls aren't perfectly round. Make your pearl in vertex
modeler and make it a bit uneven. Just a bit.
And of course, tweak, render, tweak, render, tweak, render... :-)
Hope this helps,
petteri
--- In Carrara@(protected), "life3d2000" <patrick.martin@(protected)>
wrote:
> okay I will have a study of it- looks a bit dull to me though
>
> Thanks
>
>
>
> --- In Carrara@(protected), "ccoles_avengers"
<ccoles_shado@(protected)>
> wrote:
> > Hi Patrick,
> >
> > If you go to the ShoeString Shaders Website and scroll down to
Robin
> > Miller's Entry, you will find a pearl shader and CAR file that
you can
> > study or use. <http://www.des-web.net/html/samples.html>
> >
> > Hope that helps.
> >
> > Cheers.
> >
> > Claudia
> > "Selocic"
> > - 3D: when 'Flat' just isn't good enough! -
> >
> > --- In Carrara@(protected), "life3d2000" <patrick.martin@(protected)>
> wrote:
> > > Hi,
> > > I neeed to create a pearl, and tips? Are the whitesh looking
ones
> > > transluecent? do they reflect a slight rainbow effect? How
reflective
> > > should I make it? I have scene a small pick of one on google
but they
> > > are very small for details. Do you think a transparent surface
offset
> > > from the actual surface helps renderi
>
>
> ng?
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