POV-Ray : Newsgroups : povray.binaries.images : Blurred reflection comparison : Re: Blurred reflection comparison Server Time
23 Feb 2024 03:04:59 EST (-0500)
  Re: Blurred reflection comparison  
From: clipka
Date: 12 Feb 2018 17:05:51
Message: <5a820fbf$1@news.povray.org>
Am 12.02.2018 um 22:27 schrieb Mike Horvath:

>> You need:
>>
>> (1) A way to randomize the reflection. A `normal` statement with a very
>> small scale does nicely.
>>
>> (2) A way to force POV-Ray to shoot a high number of rays per pixel
>> where the randomized reflection is. A small bit of focal blur (with high
>> quality settings) does nicely.
>>
>> Together this gives you nice blurred reflections at a (hopefully)
>> reasonable speed.
>>
> 
> Is this random normal good?

It should do the job. Note that since you're only using one copy of the
bumps normal, there's no need to translate the texture by a random amount.

Also, I'm not sure whether the average normal_map construct will give
you the desired result, or whether you should instead use a sequence of
`normal` statements. See tutorial section 2.3.5.2.2, "Blending Normals".


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