POV-Ray : Newsgroups : povray.binaries.images : A speed enhancement for blurred reflections (144KB PNG) : Re: A speed enhancement for blurred reflections (144KB PNG) Server Time
2 Nov 2024 10:17:43 EDT (-0400)
  Re: A speed enhancement for blurred reflections (144KB PNG)  
From: stbenge
Date: 23 Jan 2011 15:07:57
Message: <4d3c8a9d@news.povray.org>
On 1/23/2011 9:59 AM, Mr wrote:
>
>   stbenge<myu### [at] hotmailcom>  wrote:
>   >  A speed enhancement can be used to cut the render time down
>   >  significantly, with an arguably acceptable loss of accuracy. Under this
>   >  setup, two instances of the same object are used. One copy is visible,
>   >  uses blurred reflection, and has a no_reflection modifier applied to it.
>   >  The other copy uses non-blurred reflection, but with a no_image modifier
>   >  applied.
>
> Would there be a corresponding technique for speeding up blurred refractions?

There would, if POV had a "no_refraction" modifier. The best (and 
fastest) method for blurred refractions that I can think of is to bake 
all your scene's textures to meshes (and/or use Rune's illusion.inc), 
add a small surface normal to the refractive material and use high focal 
blur settings.

~Sam


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