Maybe with that render time a lot of it's reading the files off the
disk? Pulling the .pic into memory then uncompressing it within memory
may be signicantly faster. Though I wouldn't expect it to make such a
huge difference.
That's the only guess that comes to mind though sorry.
Cheers,
Alan.
On 5/31/05, Brad Friedman <xsibrad(at)fie.us> wrote:
> This is a question more than an answer:
>
> Why convert to pyramid if you're going to use elliptical filtering? I
> thought the two were entirely different types of filters. Or can
> elliptical filtering take advantage of a pyramid texture?
>
> -brad
>
> Bernard Lebel wrote:
>
> > Hi,
> >
> > I am baffled at something. I have a scene with rather large textures
> > (3500x3500 and higher). In Pic format, it renders in 45 seconds.
> >
> > So I'm looking to save render time, and memory while we're at it, so I
> > convert textures to pyramidal map float files (imf_copy -p [...] map
> > rgba_fp).
> > Then I turn on elliptical filtering, set the Maximum Pixels for
> > Minimum Radius to a low value 1.3, because higher than that is
> > generally not necessary.
> >
> > In the past, I got much faster render times. However right now the
> > render time explodes: it's at least 5 times longer than with the Pic
> > version.
> >
> > Any idea?
> >
> >
> > Thanks
> > Bernard
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