From: "Douglas A. Gwyn" <DAGwyn@null.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] new versions of graphics programs?
Date: Thu, 14 Sep 2000 08:14:05 +0000 [thread overview]
Message-ID: <39C053B0.34E4007F@null.net> (raw)
In-Reply-To: <20000914023113.70E17199E4@mail>
okamoto@granite.cias.osakafu-u.ac.jp wrote:
> I wanted to delete the older rect. or
> circle without affecting the background image around it.
The standard solution is to double-buffer the display,
computing a totally fresh image in the new buffer.
Then you can either switch the display to that buffer
or else copy the changed bits to the single frame buffer.
I don't know how feasible this is under the new Plan 9
graphics model.
An alternative approach with modern PC graphics cards
is to build a (3D) model in the graphics card and let
the card's engines take care of the rendering.
next prev parent reply other threads:[~2000-09-14 8:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-14 2:31 okamoto
2000-09-14 8:14 ` Douglas A. Gwyn [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-09-15 2:30 okamoto
2000-09-15 2:03 Russ Cox
2000-09-15 8:47 ` Douglas A. Gwyn
2000-09-15 8:47 ` Elliott Hughes
2000-09-15 1:51 okamoto
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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