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From: "Russ Cox" <rsc@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: [9fans] hardware acceleration
Date: Tue, 13 Feb 2001 19:45:01 -0500	[thread overview]
Message-ID: <20010214004507.48578199D5@mail.cse.psu.edu> (raw)

To address that, in 8bpp it's really not too much
of an issue, but for higher modes the system is mostly
unusable without scrolling and filling.  It's not
a question of the efficiency of the code (i.e., having
a JIT wouldn't help).  The problem is the readback speed
on the VGA card, which nails you when you're doing
software scrolling.  I can read from my 5400rpm disk
faster than I can read from my VGA memory.

Russ


             reply	other threads:[~2001-02-14  0:45 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-02-14  0:45 Russ Cox [this message]
2001-02-14  1:08 ` George Michaelson
2001-02-14  1:40 Russ Cox
2001-02-14  1:56 ` George Michaelson
2001-02-14  9:41   ` Douglas A. Gwyn
2001-02-14  2:28 Russ Cox
2001-02-14  7:01 Russ Cox
2001-02-14  7:44 nigel
2001-02-14 10:24 forsyth
2001-02-14 12:42 William Staniewicz

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