Re: very bright lights

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Angus W.S. Henderson (angus++at++despair.paradigmsim.com)
Fri, 24 Jan 1997 09:13:31 -0600

>What would happen to a red surface with
> RGB values like (1.0,0.1,0.1) - presuming that the colour calculations
> are done indepenantly in RED, GREEN and BLUE - what would happen? The
> answer is that all three colour components could go over 1.0 and (presumably)
> be clamped to 1.0 for display. This would mean that the predominantly red
> surface would show up as white - but real-world diffuse reflectors don't
> change colours like that. (Don't get confused with specular reflectors -
> which are a different matter).

I disagree. As I understand it the original request was for VERY bright lights,
i.e to emulate the effects of overexposure, blinding lights at night etc.

In these circumstances the original colour of the database is secondary you
just want to burn the light colour onto everything, and as Ken said it's the
textured surfaces that limit the effect.

I bet the only answer he gets is "use a multi-pass technique"

I hate multi pass techniques.

ANgus
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