POV-Ray : Newsgroups : povray.newusers : height fields.... : Re: height fields.... Server Time
5 Sep 2024 02:16:54 EDT (-0400)
  Re: height fields....  
From: Ron Parker
Date: 5 Dec 2001 16:32:16
Message: <slrna0t4j2.fcn.ron.parker@fwi.com>
On Wed, 05 Dec 2001 22:30:42 +0100, Christoph Hormann wrote:
> 
> 
> Ron Parker wrote:
>> 
>> I have yet to see anyone claim that anything but Photoshop has problems
>> with those file.  pngtopnm certainly deals with them correctly, and if
>> anything could be expected to implement 16-bit PNGs correctly, I'd think
>> that would be it.  Do you have examples of other programs that are supposed
>> to be able to read 16-bit PNGs that have a problem?
> 
> Apart from all past Povray versions, all paint programs i tested that can
> read 16 bit png as 8 bit read the wrong byte and gforge/hf-lab generated
> files are the other way round too.  

Past povray versions had a known bug.

Has anyone tested POVWin's 16-bit PNG output on a Mac?  I seem to remember
that we did that when this first came up and it worked okay, leading me to
believe that it's all those windows apps that are broken.

-- 
#local R=rgb 99;#local P=R-R;#local F=pigment{gradient x}box{0,1pigment{gradient
y pigment_map{[.5F pigment_map{[.3R][.3F color_map{[.15red 99][.15P]}rotate z*45
translate x]}]#local H=pigment{gradient y color_map{[.5P][.5R]}scale 1/3}[.5F
pigment_map{[.3R][.3H][.7H][.7R]}]}}}camera{location.5-3*z}//only my opinions


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