My thing is sorted, but I noticed something strange while I was
testing it... maybe there's something to it.....
I made a test scene -- gone now, didn't save it -- with a sphere with
noIcon pic inside a cube textured with a checkerboard procedural.
So.. I tried the Color_Math_Basic tip with a lambert (with only
reflectivity enabled, nothing else) for the reflective input and I had
a phong (with reflectivity disabled) at input1. There seemed to be a
very thin border noticable in some areas around the test sphere.
While I figured this was probably my AA settings not being high enough
or something, out of curiosity I replaced the lambert with a
Nodes->Raytracing->Reflection node and this "anomaly" completely
dissapeared. Gone!! I didn't change anything else between said steps.
Why would one be the lambert be evaluated differently??
To cut a long story short, a Reflection node seems like a "cleaner"
thing to plug to input2 of Color_Math_basic for this approach.
-- Alan
On Dec 17, 2007 2:48 AM, kim aldis <xsi(at)kim-aldis.co.uk> wrote:
> There's not an awful lot you can do in Photoshop in this instance that you
> couldn't do in the rendertree. Not that there's anything wrong with doing it
> in photoshop but using the rendertree's a lot quicker. In fact, if you
> consider things like Fresnel effects you can do more in the rendertree.
>
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
>
> > Behalf Of Stephen Davidson
> > Sent: 17 December 2007 03:07
> > To: XSI(at)Softimage.COM
> > Subject: RE: Don't want reflective material to lose color
> >
> > I know this is kind of a manual way of doing it, but I mix the color
> > back into the reflection map in Photoshop. This gives me much more
> > control.
> >
> >
> > Best Regards,
> >
> > Steve Davidson
> >
> > (954)552-7956
> > www.3danimationmagic.com
> >
> > Now on YouTube: www.youtube.com/3danimationmagic
> >
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
> > Behalf Of
> > Alan Fregtman
> > Sent: Sunday, December 16, 2007 5:14 PM
> > To: xsi(at)Softimage.COM
> > Subject: Don't want reflective material to lose color
> >
> >
> > Hey guys,
> >
> > In XSI, the higher the reflectivity of a material, the more mirror-like
> > it
> > is, of course, and thus its color (diffuse) kinda begins to dissapear.
> >
> > What if I still wanted it to be somewhat reflective but I didn't wish
> > the
> > main color to get so attenuated? Any idea how I would accomplish this?
> > What
> > kind of material/shader should I look into?
> >
> > Thanks,
> >
> > -- Alan
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