[Algorithms] [Rendering] Merging, approximating several dynamic lights

[Christian L. <cla...@al...>]

Maybe you should take a look at this paper:

 http://www.iro.umontreal.ca/labs/infographie/papers/Paquette-1998-HVD/

 Paquette et al create a light hierarchy, in which they can combine lights
depending on the desired quality. It was written for raytracing, but I guess
you could apply it to rasterization without problem. Anyway, let me know if
that helps. ;-)

Christian Laforte
Rendering&Vis Team, Alias (|wavefront)

> ----- Original Message ----- 
> From: "Guillaume Provost" <Gui...@ps...>
> To: <gda...@li...>
> Sent: Tuesday, July 15, 2003 11:13 AM
> Subject: [Algorithms] [Rendering] Merging, approximating several dynamic
> lights
>
>
> > Greetings,
> >
> > I am, as I'm sure you all are, constrained in the number of dynamic
> > lights I can light a mesh with. I've implemented a 'degrading scheme'
> where
> > I degrade a light from per-pixel to per-vertex to a simple ambient cue
in
> > order to manage performance (these are also scaled with respect to
> distance
> > of the lightsource and camera), but these transitions are not always
> > seemless. I was wondering whether some of you have tried merging
> > lightsources as an alternative to this, and how much success you've had
at
> > getting rid of discontinuities in the lighting conditions. I currently
> deal
> > mostly with 'skewed' spotlights (point-ellipsoid lights) which I use to
> > roughly approximate rectangular area-lights, and omnidirectional lights.
> >
> > Guillaume.
> > www.celdamage.com
> >
> >
> >
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>