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From: "Douglas A. Gwyn" <DAGwyn@null.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Double buffering graphics
Date: Mon, 10 Jun 2002 10:02:26 +0000	[thread overview]
Message-ID: <3D0422D9.27B803EE@null.net> (raw)
In-Reply-To: <93060660658860b6a268b7d4407047ce@acl.lanl.gov>

> > Be sure to switch during the vertical retrace interval,
> > to avoid yucky visual artifacts.
andrey mirtchovski wrote:
> who should take care of that?  the drawing library (i.e.  draw()), the
> software or the driver?

If you're really fortunate, the graphics hardware was designed to
help in this frame synchronization.  Just how you do it depends on
the graphics subsystem (software and hardware) architecture and
capabilities.  As to who "should" take care of it, it "should" be
whoever is in the best position to detect the VRI onset, perhaps
an interrupt handler (which would simply switch buffer pointers).


  reply	other threads:[~2002-06-10 10:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-06-05  7:51 andrey mirtchovski
2002-06-10 10:02 ` Douglas A. Gwyn [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-05-30 20:10 rog
2002-05-30 20:10 rsc
2002-05-30 19:48 rsc
2002-06-05  9:55 ` Douglas A. Gwyn
2002-05-30 19:43 Elizabeth Strumph
2002-05-30 19:40 andrey mirtchovski

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