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- Path: comma.rhein.de!serpens!not-for-mail
- From: mlelstv@serpens.rhein.de (Michael van Elst)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Demo/game to OS friendly part II
- Date: 5 Jan 1996 22:09:07 +0100
- Organization: dis-
- Message-ID: <4ck41j$a9a@serpens.rhein.de>
- References: <38231819@kone.fipnet.fi> <4cgsn7$ke3@maureen.teleport.com> <38231852@kone.fipnet.fi>
- NNTP-Posting-Host: serpens.rhein.de
-
- "Jyrki Saarinen" <jsaarinen@kone.fipnet.fi> writes:
-
- >Ok. What is the fastest way to have triple buffering
- >on a Intuition screen? ScrollVPort()?
-
- The fastest method is to use the double buffer functions in OS 3.x.
- Doesn't mean that all displays support double buffering (i.e. last
- time I checked there was no double buffering in CyberGraphics).
-
- I'm not sure whether ScrollVPort() with different BitMaps is
- supported on anything else than the native graphics either.
- If it would be supported it could be pretty slow if a bitmap
- has to be swapped from fast memory to the card.
-
- Opening a screen with twice the height or width and using
- ScrollVPort() to change the displayed region might be
- compatible with more graphics cards. With only one BitMap
- it should be guaranteed that no data has to be copied.
-
- So I'd try the double buffer functions and if that fails
- resort to one of the kludges below.
-
- Regards,
- --
- Michael van Elst
-
- Internet: mlelstv@serpens.rhein.de
- "A potential Snark may lurk in every tree."
-