Path: utzoo!attcan!uunet!husc6!tut.cis.ohio-state.edu!mdf
From: mdf@tut.cis.ohio-state.edu (Mark D. Freeman)
Newsgroups: comp.sys.ibm.pc
Subject: Re: vga to ega conversion
Message-ID: <21324@tut.cis.ohio-state.edu>
Date: 6 Sep 88 01:05:28 GMT
References: <2777@jpl-devvax.JPL.NASA.GOV>
Reply-To: mdf@tut.cis.osu-state.edu (Mark D. Freeman)
Organization: CompuServe; Columbus, OH. (personal guest account) at Ohio State U.)
Lines: 29

In <2777@jpl-devvax.JPL.NASA.GOV> carlos@beowulf.JPL.NASA.GOV (Carlos Carrion) writes:
>	Is there a product out that converts vga graphics to ega?
>e.g., if I take a vga .GIF picture, how can I get an ega .GIF reader
>to display the pix?  I understand that the resolutions and # of bit planes
>are different.  can it be done?

Yes, this is the beauty of .GIF format.  The viewer will display what
it can of the image.  Some will scale the image to the new screen size,
others will enable you to scroll the screen around an image too large
for it (in pixels), and they all try to do something reasonable about
the colors.

Of course, an image recorded with 256 colors may not look great on a 16
color display.

There are many .GIF viewers in the PICS FORUM on CompuServe, all of
which are public-domain or ShareWare that have a variety of features.
Someone recently put a utility up there that will do some analysis of a
VGA .GIF file and apply some intelligence to the elimination of pixels
and colors so that the resulting file will look as good as possible on
an EGA.  However, the interpolation done on the fly by the regular .GIF
viewers are usually good enough.

Disclaimer:  I speak only for myself, not my employer.
-- 
Mark D. Freeman						  (614) 262-1418
Applications Programmer, CompuServe	      mdf@tut.cis.ohio-state.edu
[70003,4277]			      ...!att!tut.cis.ohio-state.edu!mdf
Columbus, OH		      Guest account at The Ohio State University