RE: [Algorithms] [Rendering] Merging, approximating several dynam ic lights

[Troy G. <Tr...@cs...>]

I'm a little slow when it comes to SH (though very interested to learn
more), so please bare with me...

When you say "one normal and an ambient ..." do you mean one _directional_
light and an ambient light? [Sorry if the terms are interchangeable, just
never seen them used that way.]

If that is the case (1dir+amb==4-comp SH), is there an equivalent to the
preferable 9-comp SH? Perhaps a 4dir+amb setup?

Troy
Developer Relations
Criterion Software
www.csl.com


> -----Original Message-----
> From: Tom Forsyth [mailto:tom...@bl...]
> Sent: Monday, July 21, 2003 11:41 AM
> To: gda...@li...
> Subject: RE: [Algorithms] [Rendering] Merging, approximating several
> dynamic lights
> 
> 
> One normal and an ambient == a 4-component spherical harmonic! (I can
> never remember if that's 1st order or 2nd order). The increase in
> quality in going to a 9-component one is IMHO significant.
> 
> TomF.