"R. Suzuki" wrote:
> 
> [...]
> 
> This cache technique uses a function value of the previous ray and eliminates
> unnecessary calculation.  Maybe I will to explain that technique with figures...
> 

Sounds interesting, some more details would be appreciated.

I suppose since it only uses the previous ray it's much less efficient if
for example radiosity or reflection are involved.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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