Christopher James Huff wrote:
> In article <3eaadd08@news.povray.org>, Wolfgang Wieser <wwi### [at] gmxde> 
> wrote:
> 
> 
> This seems to be the main advantage. Subdividing and displacing a big 
> mesh could take a lot of CPU time, and limiting it to the needed areas 
> would not be easy, so you would store more triangles than necessary. My 
> main point is that memory use seems to be more of a side benefit, if it 
> really can give a speed benefit. (time/CPU is much more costly than 
> memory or storage)
> 

There has to be a reason why the reyes algorithm is still used ;-)
The problem is that if you hit a memory limit there often is not much 
you can do about it besides buying more memory, with time/CPU you can at 
least wait. And it's not only the geometry that has big memory 
requirements but also radiosity, photon mapping, etc..

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