Re: [HACKERS] PostgreSQL LOGO (was: Developers Globe (FINAL))

On Tue, 23 Mar 1999, you wrote:

> Outch - yes I know what you mean - I have such a one for my
> camera too (along with the other usual ones like the 2 diop
> hole lense etc.). That's one of the limits of raytracing
> AFAIK. I never had any success on such a thing like a filter.
> Also it's impossible to build spectral effects. Spectral
> effects are based on the fact that the refractional index of
> a material varies on the frequency of the light (that's what
> makes the fire in diamonds). But a raytracer cannot do this -
> or at least the trace would run infinitely long - thus no
> tracer I know of supports it.

Doesn't blender do spectral effects?

Taral