POV-Ray : Newsgroups : povray.binaries.images : Luna, Moon... desert satellite : Re: Luna, Moon... desert satellite Server Time
18 Oct 2021 22:12:13 EDT (-0400)
  Re: Luna, Moon... desert satellite  
From: Alain Martel
Date: 10 Sep 2021 16:41:12
Message: <613bc2e8$1@news.povray.org>

> Thomas de Groot <tho### [at] degrootorg> wrote:
>> Op 09/09/2021 om 03:24 schreef Samuel B.:
>>> Just testing out some moon maps. (...)
>> Those maps are getting better over the years... as also the use of them.
>> Very nice that little touch of Earth glow in the shadows!
> Thank you Thomas. It actually renders very quickly, sans bloom.
> Unfortunately, the bump maps appear to be 8-bit grayscale, not 16-bit. Even
> though IrfanView reports a 16-bit format, my tests in POV-Ray showed major
> terracing artifacts like you would expect from a lower bit depth. (Not seen here
> because I kept the resolution below a certain size). I should probably try the
> maps them out in other programs to see if POV is at fault, although I doubt it
> is...
> Sam
It could be in 16 bits format, but with the lower byte zeroed.

zeroed lower byte, then, you'll see sharp spikes instead of a curve.

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