Elliptical filtering 2005-05-31 - By Brad Friedman
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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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