Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!usc!elroy.jpl.nasa.gov!decwrl!shelby!neon!minakami
From: minakami@Neon.Stanford.EDU (Michael K. Minakami)
Newsgroups: comp.windows.ms
Subject: Re: MS-WINDOWS IN 1024x768 RESOLUTION
Message-ID: <1990Mar23.012426.8949@Neon.Stanford.EDU>
Date: 23 Mar 90 01:24:26 GMT
References: <327@spot.wbst128.xerox.com> <18652@boulder.Colorado.EDU>
Organization: Computer Science Department, Stanford University
Lines: 18

In article <18652@boulder.Colorado.EDU> wallwey@boulder.Colorado.EDU (WALLWEY DEAN WILLIAM) writes:
>Sounds like somebody at ATI needs to get to work and actually write a 
>decent driver!!!!  Since the screen is fast in stretching windows, I
>VERY SERIOUSLY doubt that it is the hardware!!  To stretch a window
>actually takes more programming and is harder to do than to move a window.
>To move a window requires simply copying the video bit map to memory,

I doubt that copying display memory to main memory is feasible; 
1024x768 cards have 512K on board. Even if you were to copy only the
areas actually sed by the adapter and compressed two pixels/byte 
(assuming 16 color mode), you'd still need something on the order of
384K. From looking at performance of Windows apps, it looks as if
windows are asked to repaint themselves after a move/resize. Can
someone confirm this? (still, this is no excuse for the *very* poorly
written drivers. The one I have doesn't allow me to switch between
standard and windows apps without completely mucking up the screen).

Michael