POV-Ray : Newsgroups : povray.general : PNG and Alpha : Re: PNG and Alpha Server Time
7 Aug 2024 05:15:12 EDT (-0400)
  Re: PNG and Alpha  
From: Warp
Date: 10 Nov 2001 07:24:58
Message: <3bed1c99@news.povray.org>
QuadHall <tre### [at] ww-interlinknet> wrote:
: Recently (I think) there were some postings in one of the povray newsgroups
: involving POV produced PNG files (with an alpha channel) and the internet
: browsers that properly displayed such images.  One of these postings, if my
: questionable memory serves me, had a link to an example web page-->I think
: it had a png image of a lit match against some sort of varied background .
: Does anyone remember seeing these posts? (and if so, which newsgroup, date,
: etc?)  thanks.....

  I think that post was made by me. I don't remember which thread it was,
though.
  The page is this one:

http://www.cs.tut.fi/~warp/alphatest.html

  If the browser supports alpha properly, it should look like this:

http://www.cs.tut.fi/~warp/alphatestsnapshot.jpg

  The only browsers I know that support the alpha channel properly are
Netscape 6.x, Mozilla 0.9.x (which is practically the same thing) and
Internet Explorer 5.x for MacOS (the Windows version has no proper support).

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -


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