It depends on the file being rendered.  If it's something that would be fast on
the mosiac preview part, there is a definite difference.  On slower scenes it
may not be as noticable.  This is something I first heard about a year ago.
The thing to notice is it only affects the first pass.  I think I've heard
mentioned that the same thing is true when doing a mosaic preview render.

What it looks like is that the % amount in the title bar keeps repeating unless
the cursor is placed on the title bar and held down.  Then it flies through the
first pass.

-Mike

=Bob wrote:

> I've tried this out since first hearing about it. No speed change noticable
> for me. P-R 3.1r1 for Windows under Win95.
>
> Message <365E8C26.8FF16A4A@zess.uni-siegen.de>, Markus Becker  typed...
> >
> >Hello,
> >
> >I thought that more people would already know this "bug". But I haven't
> >seen it mentioned here.
> >
> >Version: 3.1.watcom.win32.r1
> >
> >Problem: If you do a rendering with radiosity on, it goes two-pass.
> >The first pass always seemed very slow to me until I realized that
> >it speeds up with a factor of at least 20 (twenty!!!) if you click and
> >hold the title bar of the rendering window. If you do this, radiosity
> >renderings are only about 50% slower than normal ones.
> >
> >Somebody should know this and it should be quite easy to fix, I guess
> >it is a message handling problem between the rendering window and the
> >calculation thread.
> >
> >Markus
>
> --
>  omniVERSE: beyond the universe
>   http://members.aol.com/inversez/POVring.html
> =Bob

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