Re: Elliptical filtering

[Brad Friedman <xsibrad(at)fie.us>]

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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