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- id m0typza-0007qZa; Mon, 18 Mar 96 18:13 MST
- Sender: owner-executor
- Received: from ardi.com by ftp.ardi.com
- (Smail3.1.29.1 #3) id m0typz0-0007qCn; Mon, 18 Mar 96 18:13 MST
- Path: sloth.swcp.com!usenet
- From: Clifford T. Matthews <ctm@ardi.com>
- Newsgroups: comp.emulators.mac.executor
- Subject: Re: QuickDraw or No???
- Date: 18 Mar 1996 17:15:54 -0700
- Organization: ARDI
- Lines: 28
- Message-ID: <ufwx4ilyyt.fsf@ftp.ardi.com>
- References: <314cf885.1034712@nntp.ix.netcom.com>
- <314D76C3.759E581B@interport.net>
- NNTP-Posting-Host: ftp.ardi.com
- In-reply-to: Bryan Taylor's message of Mon, 18 Mar 1996 09:44:19 -0500
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- To: executor@ardi.com
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-
- >>>>> "Bryan" == Bryan Taylor <bryan@interport.net> writes:
- In article <314D76C3.759E581B@interport.net> Bryan Taylor <bryan@interport.net> writes:
-
-
- Bryan> Frogboyz wrote:
- >> Certain Macintosh programs allow direct writes to video
- >> hardware, bypassing Quickdraw, and it is supposed to improve
- >> speed. I don't know whether or not this is recommended under
- >> Executor. Any ideas?
-
- It's not recommended, because in general it winds up being slower, but
- it should work under Executor.
-
- Bryan> As I understand Director 4.0, for example, does its own
- Bryan> screen writes. It works under Executor, but leaves
- Bryan> partially un-redrawn screens. Otherwise it seem to work
- Bryan> fine.
-
- Executor handles this in different ways depending on the underlying OS
- and video driver. If Executor can directly map the video memory into
- Executor's address space (like it can under DOS when a VESA 2 driver
- provides a linear frame buffer, or it can under Executor/SVGAlib with
- certain video boards) then things just work automatically. If
- Executor can't directly map the screen then it has to periodically
- "refresh" the real screen from a pretend screen.
-
- --Cliff
- ctm@ardi.com
-
-