RE: [Algorithms] Improving look of Shadows

[Willem H. de B. <Wi...@mu...>]

Are you talking about projective shadow maps?

If so.

a) get some gaussian blur going on. You could render the
shadow to a smaller buffer and let bilinear filtering
do the rest, but that looks pants. (ie, blocky-blurry
if you know what I mean).
b) If you draw your shadow map as a separate pass, have
a vertex alpha with a value depending on the distance
from vertex to lightsource. Or have a separate 1d texture
gradient texture and calculate uv for each vertex depending
on distance from light, and draw multi-pass.

Willem
MuckyFoot Goat Boy In A Hurry (tm)

> -----Original Message-----
> From: MH...@bl... [mailto:MH...@bl...]
> Sent: 07 March 2002 17:40
> To: GDA...@li...
> Subject: [Algorithms] Improving look of Shadows
> 
> 
> Can I do something to a shadow draw routine to make it:
>    a) look a little fuzzy or blurry
>    b) get a little lighter (more transparent) at the point 
> farthest away
> from the "light source".  what i mean here is that the shadow 
> would look a
> little darker at its base, and a little lighter at its peak
> 
> what would these algorithms be, lets say on a PC or PS2
> 
> 
> respectfully,
> m
> 
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