Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!olivea!oliveb!amiga!boing!dale
From: dale@boing.UUCP (Dale Luck)
Newsgroups: comp.windows.x
Subject: Re: PC X servers / backing store
Message-ID: <953@boing.UUCP>
Date: 9 Mar 91 04:53:59 GMT
References: <9103032356.AA00215@devnull.Eng.Sun.COM> <952@boing.UUCP> <163@tdatirv.UUCP>
Reply-To: dale@boing.UUCP (Dale Luck)
Organization: Boing, Milpitas, Ca.
Lines: 21

In article <163@tdatirv.UUCP> sarima@tdatirv.UUCP (Stanley Friesen) writes:
>In article <952@boing.UUCP> dale@boing.UUCP (Dale Luck) writes:
>>The Amiga guarentees backing store with it's SMART_REFRESH windows.
>
>Oh, aye, so it does, but read the fine print.  All of the memory has
>to be allocated when the window is created

You better clean your glasses, this is completely untrue. The Amiga only
allocates backingstore bitmaps when portions of smart refresh windows
are covered up. They are returned to the system when exposed. Maybe you
are thinking about superbitmaps which are actually large  preallocated
pixmaps in which all the bits are preserved no matter how big the
on screen window is. Sizing this one bigger automatically brings bits
from the larger pixmap onto the screen.

>---------------
>uunet!tdatirv!sarima				(Stanley Friesen)

-- 
Dale Luck     GfxBase/Boing, Inc.
{uunet!cbmvax|pyramid}!amiga!boing!dale