From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
Date: Sat,  1 May 2010 20:42:23 -0400
To: 9fans@9fans.net
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Subject: Re: [9fans] ctrl radeon: not working for ATI Radeon 9600 Mobility?
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On Sat May  1 18:50:38 EDT 2010, me@endeavour.zapto.org wrote:
> > [...] the main slowdown
> > is reading from the hardware framebuffer, which plan 9 does a lot.
>
> Where in the draw path does Plan 9 read back from the framebuffer? Why so much?

/sys/src/9/port/devdraw.c:/^drawchar and multiple places in :/^drawmesg

- erik