Re: Material, seamless_circular_noise->cloudy

[Vesa Meskanen]

Hello,

You say _brute-force_. Are there other methods that can be used? I know 
the game industry is looking into approaches made available with DX10. 
Then again, not sure if it deals with selfshadowing or "just simple" 
volumetrics, haven't really looked into it.

I guess if you have any knowledge - in advance - of the nature of the fog, 
you can save majority of the computations. For example, if the fog is so 
thick that rays penetrate only a fraction of the average thickness, the 
approach of stepping into the volume until  some  limit value  is reached is 
much quicker.  And there's no limit how much you can 'fake' or precompute an 
effect. The more parameters you fix, the quicker it gets. The final limit is 
a pre-rendered image, which can be shown instantaneously:)


Best regards,

Vesa