RE: [Algorithms] Unattainable effects?

[Pallister, K. <kim...@in...>]

Well, performance limitations get overcome, but there are some 'hard limits'
of the display technology (and input devices, etc, for that matter).

You can gamma-correct and add lens flares to your hearts content, but you
are not going to get the user to squint and sheild his eyes with his hands,
not on a CRT anyway. I think that's what they meant.

That being said, I think the
gamma-correct-overexpose-when-emerging-to-daylight type tricks are cool. As
with flight sims fading to black when you pull too many G's, it gets the
point across.

Kim Pallister

We will find a way or we will make one.
                     - Hannibal


> -----Original Message-----
> From: Michael S. Harrison [mailto:mic...@ud...]
> Sent: Friday, August 25, 2000 12:06 PM
> To: gda...@li...
> Subject: [Algorithms] Unattainable effects?
> 
> 
> 
> "...it may be hopeless to simulate them realistically on a 
> computer screen"
> 
> b**lsh*t
> 
> :-)
> 
> And there will never be more than five computers in the 
> entire world.  (check your computer history if you don't 
> recognize that statement).
> 
> I completely agree with you that the effects you mention are 
> important to realistic simulation of our world, and they will 
> be possible someday.  With the way that technology is 
> progressing, that day may not be more than a few years (decade?) away.
> 
> It's possible to do those effects now, as long as you don't 
> want interactive frame rates.  The frame rates will continue 
> to go up though, and with them, the effects to bring the 
> rates right back down. :-)
> 
> At 10:22 AM 8/25/00, you wrote:
> 
> >The more I look at real outdoor environments (eg. life) the
> >more I feel that it may be hopeless to simulate them realistically
> >on a computer screen.  The problem is the sun.  The sun is so
> >bright, and so strongly affects our experience outdoors, that you
> >can't make a realistic outdoor enviroment without a blindingly
> >bright sun, sharp specular reflections on water and cars, etc.
> >These are very bright, very high frequency effects that are very
> >very hard to model.  Also, back-lighting by the sun, such as the
> >halo around an opaque object, or the glow of the sun through a
> >tree's leaves (take a look at that, it's amazing, and happens
> >quite often).  
> >
> >IMHO this is orders of magnitude more important to visual realism
> >than radiosity on landscapes.  Diffuse lighting looks reasonable
> >with just the parrallel light from the sun (properly shadowed,
> >of course, perhaps with a slower-than-Lambertian angle dependence)
> >and ambient.
> >
> >-------------------------------------------------------
> >Charles Bloom    cb...@cb...    http://www.cbloom.com
> >
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