POV-Ray : Newsgroups : povray.general : Performance and inner workings of reflection : Re: Performance and inner workings of reflection Server Time
29 Jul 2024 06:17:43 EDT (-0400)
  Re: Performance and inner workings of reflection  
From: Warp
Date: 20 Sep 2012 11:42:24
Message: <505b3960@news.povray.org>
Dabear <nomail@nomail> wrote:
> i came around the documentation site
> http://www.povray.org/documentation/view/3.6.1/348/
> and it says: "Adding reflection to a texture makes it take longer to render
> because an additional ray must be traced."
> I am wondering why it would take longer if i specify "reflection {1}". I always
> thought that you are then able to instantly calculate in which direction the ray
> must go and then just take the first objects color which is hit by the reflected
> ray.

It's slower because now you have to trace two rays instead of one (which
would be the case when there's no reflection).

-- 
                                                          - Warp


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