Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!sun-barr!cs.utexas.edu!swrinde!kent
From: kent@swrinde.nde.swri.edu (Kent D. Polk)
Newsgroups: comp.sys.amiga
Subject: Re: Need Defn. of IFF standard
Message-ID: <17408@swrinde.nde.swri.edu>
Date: 13 Jun 89 22:17:54 GMT
References: <AYZ5Sty00W0GBoaYk6@andrew.cmu.edu>
Reply-To: kent@swrinde.UUCP (Kent D. Polk)
Organization: Southwest Research Institute, San Antonio, Texas
Lines: 29

In article <AYZ5Sty00W0GBoaYk6@andrew.cmu.edu> ak10+@andrew.cmu.edu (Andrew Joseph Kompanek) writes:
>I'd like to convert raw 8-bit image data ( that I've captured with hardware
[ to IFF]...

Speaking of raw 8-bit data, is there a faster method of displaying
8-bit data than something like:

for (y... {
   for (x... {
      SetAPen (rp, (int) (buffer_val >> 4));
      WritePixel (rp, x, y);
   }
}

I have the 8-bit info in a buffer & need to perform user-specified
color scale changes. Just changing the palette is way too coarse. I
currently filter the SetApen color from bufferval to reflect the change
while I'm WritePixeling the whole thing back out. Terribly slow, but I
don't see another way to do it yet.

The data is output from a reflective synthetic aperture program I
wrote on a Sun.

>I'd appreciate any responses.
Me too.

Thanks,

Kent Polk