Path: utzoo!attcan!uunet!husc6!purdue!decwrl!sun!david
From: david@sun.uucp (David DiGiacomo)
Newsgroups: comp.graphics
Subject: Re: Sun rasterfiles.
Message-ID: <54078@sun.uucp>
Date: 21 May 88 01:06:20 GMT
References: <1051@luth.luth.se> <818@imagine.PAWL.RPI.EDU> <54042@sun.uucp>
Organization: Sun Microsystems, Inc. - Mtn View, CA
Lines: 27

In article <54042@sun.uucp> mae@sun.UUCP (Mike Ekberg, Sun {Graphics
Product Division}) writes:

>  colormap_t colormap;
>
> ...
>
>  if( pr_load_colormap(fp,&rh,&colormap) == PIX_ERR) {
>    perror("Colormap");
>    exit(-1);
>  }

Please note that it's not quite this easy to get the colormap if you are
not lucky enough to have a 3.4 or newer pixrect library.

Even if you have the right library, you must initialize the colormap
struct before calling pr_load_colormap(); you can zero it or just set
colormap.type to RMT_NONE.  For an example of this look at
/usr/lib/rasfilters/convert.2.c.

Refer to the 3.[45] release manual or 4.0 pixrect manual for details.

P.S. perror() is not likely to print anything sensible after a pixrect
function fails.

P.P.S. Is this stuff too vendor specific for comp.graphics?  Does everyone
who is interested get sun-spots?