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From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] radar for plan 9, and two draw funnies.
Date: Sat, 12 Dec 2009 10:25:47 -0500	[thread overview]
Message-ID: <db4b6d0fcff378f3f6e97beb5a2c7945@ladd.quanstro.net> (raw)
In-Reply-To: <<dd6fe68a0912120655q18c8e3f3pd056284626b0ae4f@mail.gmail.com>>

On Sat Dec 12 09:59:41 EST 2009, rsc@swtch.com wrote:
> > why would m8 != r8g8b8?
>
> m8 is approximately r2g2b2.
> you don't have nearly enough
> precision to do image compositing
> and get useful results.

that makes sense.

> a better question would be why
> you are using m8.

jpg without -t defaults to outputting
m8, even for a jpg without a colormap,
even for photos.  i didn't realize that,
and i'm not doing that any more.

still, why is red getting turned to cyan?

- erik



       reply	other threads:[~2009-12-12 15:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <<dd6fe68a0912120655q18c8e3f3pd056284626b0ae4f@mail.gmail.com>
2009-12-12 15:25 ` erik quanstrom [this message]
2009-12-12 15:45   ` Russ Cox
     [not found] <<20091212144519.GA2904@zoidberg.hsd1.mi.comcast.net>
2009-12-12 20:00 ` erik quanstrom
     [not found] <<dd6fe68a0912120745w38f491a5y65da039556f936ab@mail.gmail.com>
2009-12-12 16:09 ` erik quanstrom
2009-12-12 18:57   ` Russ Cox
2009-12-12  1:51 erik quanstrom
2009-12-12 14:45 ` Jacob Todd
2009-12-12 14:55 ` Russ Cox

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