POV-Ray : Newsgroups : povray.binaries.images : Proof of Concept: Cutoff Distance for Fading Lights : Re: Proof of Concept: Cutoff Distance for Fading Lights Server Time
29 Jul 2024 18:27:10 EDT (-0400)
  Re: Proof of Concept: Cutoff Distance for Fading Lights  
From: [GDS|Entropy]
Date: 29 Jan 2014 13:25:00
Message: <web.52e946e581045008ddb0c31e0@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> A scene with 1000 randomly placed light sources with distance-dependent
> attenuation (fade_power, fade_distance).
>
> First image: POV-Ray 3.7, render time 73s.
>
> Second image: experimental patch, render time 9s.
>
> For each light source, the patch automatically computes a cutoff
> distance based on light source brightness, fade parameters, and a global
> threshold (currently this is the global adc_bailout setting). Beyond
> this distance, the lights source is simply ignored.
>
> (As an alternative, the patch also allows for manually specifying the
> cutoff distance, but that's not used in this scene.)

Hey, that looks pretty nice there; it reminds me of the MegaPov Glows a bit. ;)

Ian


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