From: "Douglas A. Gwyn" <DAGwyn@null.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] new versions of graphics programs?
Date: Fri, 15 Sep 2000 08:47:36 +0000 [thread overview]
Message-ID: <39C1A2CB.FE8E881F@null.net> (raw)
In-Reply-To: <20000915020412.AA23219A01@mail>
Russ Cox wrote:
> Someone set me straight.
The idea is to obtain perfect visual effect.
If you have ever "rubber-banded" on a bitmap display
where the rubber-banding was done via XORing,
you must have seen that it was hardest to make out the
object being manipulated just when the finest control
was needed (slow, small movements).
And if you have ever seen single-buffered animation
running wide open, you must have seen the visual
artifacts of beating with refresh rate, or when
VBL sync was used, suddenly exceeding the frame time.
What one wants ideally is the effect of a genuine
stroke-refresh display, using raster technology.
If you can do that without double-buffering, good.
next prev parent reply other threads:[~2000-09-15 8:47 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-15 2:03 Russ Cox
2000-09-15 8:47 ` Douglas A. Gwyn [this message]
2000-09-15 8:47 ` Elliott Hughes
-- strict thread matches above, loose matches on Subject: below --
2000-09-15 2:30 okamoto
2000-09-15 1:51 okamoto
2000-09-14 2:31 okamoto
2000-09-14 8:14 ` Douglas A. Gwyn
2000-09-13 5:55 okamoto
2000-09-13 3:32 okamoto
2000-09-13 3:19 okamoto
2000-09-13 2:58 Russ Cox
2000-09-13 2:55 okamoto
2000-09-13 2:51 okamoto
2000-09-13 1:28 okamoto
2000-09-12 13:33 Russ Cox
2000-09-12 10:01 okamoto
2000-09-08 4:34 okamoto
2000-09-07 21:57 rob pike
[not found] ` <rob@plan9.bell-labs.com>
2000-09-07 22:18 ` Tom Duff
2000-09-07 22:50 ` Jim Choate
[not found] ` <ravage@einstein.ssz.com>
2000-09-07 22:35 ` Tom Duff
2000-09-07 23:24 ` Jim Choate
2000-09-08 15:28 ` please_no_spam_to_
[not found] ` <D.M.Pick@qmw.ac.uk>
2000-09-08 16:43 ` Tom Duff
2000-09-07 16:08 Anthony Sorace
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