"Warp" <war### [at] tagpovrayorg> wrote in message
news:3e3d383c@news.povray.org...
> Thorsten Froehlich <tho### [at] trfde> wrote:
> >> The current mosaic preview adds rendering time because the pixels
> >> rendered in the preview are not used in the final rendering.
>
> > Yes.  I know it is intentional, but I do not know why.
>

If youre talking about the Radiosity Pretrace, this is done to "seed" the
rendering with some prestored ambient values. It is essential to getting a
good-quality radiosity rendering.

George Pantazopoulos

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