newcons fb driver
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Mar 3 19:50:14 UTC 2014
In message <CAHSQbTBTq6EKD_crn=rvbeUcAEBn7E+=U8wRHeqchazF1LhjwQ at mail.gmail.com>
, Justin Hibbits writes:
>On Mon, Mar 3, 2014 at 8:49 AM, Kurt Lidl <lidl at pix.net> wrote:
>All great knowledge, but really only answers half of what I'm looking
>for (always good to know potential pitfalls). Assuming a
>tunable/sysctl is added, what's the best way to optimize from my
>original post? Use a backing buffer (potentially with a tunable to
>not)? Or assume we don't support background images, and write the
>background color in the masked pixels?
You should probably drop sos@ aka Søren Schmidt an email, he did
syscons and has 10+ years experience in this stuff.
One advantage of a backing buffer is that you can implement things
like the 1000 line scroll buffer syscons did etc, I personally use
that a lot to see dmesg output etc.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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