Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!ficc!peter
From: peter@ficc.uu.net (Peter da Silva)
Newsgroups: comp.windows.x
Subject: Re: Contents of windows
Message-ID: <4089@ficc.uu.net>
Date: 5 May 89 17:21:42 GMT
References: <4037@ficc.uu.net> <1306@esunix.UUCP>
Organization: Xenix Support
Lines: 17

In article <1306@esunix.UUCP>, bpendlet@esunix.UUCP (Bob Pendleton) writes:
> A bit of backing store? Lets see, my default xterm window size is
> 80x60 using an 8x13 font so that is 499200 pixels. On a machine with
> 32 bits/pixel (yes, such machines exist and run X) thats 1,996,800
> bytes or 1.95 megabytes.

And any half-bright implementation of layers on a machine with that deep
a display should track the colors used. An XTERM window uses at most four
colors (fg, bg, cursor, and pointer), so if it backs up more than two
bitplanes it's horribly inefficient.

So, it's really a quality of implementation issue.
-- 
Peter da Silva, Xenix Support, Ferranti International Controls Corporation.

Business: uunet.uu.net!ficc!peter, peter@ficc.uu.net, +1 713 274 5180.
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