POV-Ray : Newsgroups : povray.binaries.images : The Mule in the Lowlands Server Time
19 May 2024 13:02:23 EDT (-0400)
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From: Samuel B 
Subject: Re: The Mule in the Lowlands
Date: 11 Aug 2016 19:30:01
Message: <web.57ad0a47ce1d77aa9adf830b0@news.povray.org>
Ive <ive### [at] lilysoftorg> wrote:
> Hmm. I was under the impression UberPOV tries to unify all the different
> oversampling mechanisms so the sample count for the blurred rays already
> benefits from antialiasing/focal blur.

It seems to me (and I could be wrong) that UberPOV automatically calculates how
many reflection samples it needs depending on what is passed to roughness. It
would be great to be able to set it to a low value like 1 or 2 and just let
focal blur or aa take care of the rest.

> Anyway, let me know if you find ways to improve the render time with
> UberPOV, as I can't live without blurred reflections anymore.

For reflection/refraction blurring you can do something like the following:

normal{bumps .025 scale 1e-4}

For your scene you can set the radiosity count to 1 and area_light samples to 2,
2.

To get the most out of aa use the new method:

+a0.01 +am3 +r3

The aa threshold can be lowered and +r can be raised as needed. Final renderings
will probably require +r4 or higher.

Focal blur is easy. Just adjust blur_samples to your liking and keep variance at
or near zero.

-Sam


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