From: Yaroslav <yarikos@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] xor draw
Date: Thu, 14 Feb 2013 22:31:56 +0200 [thread overview]
Message-ID: <CAG3N4d-+8q3wRSfPF2ujMj8rz=gS=06WNpTZcro=Res2VeBXPQ@mail.gmail.com> (raw)
In-Reply-To: <254c73c5116774c8e4a77966a98d0f28@ladd.quanstro.net>
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2013/2/14 erik quanstrom <quanstro@quanstro.net>
> On Thu Feb 14 13:52:09 EST 2013, yarikos@gmail.com wrote:
>
> > we can't do XOR drawing with draw(2) like with bitblt, can we?
>
> if there's a trivial α channel, it's possible. otherwise one
> runs the risk of α multiplication.
>
>
No alpha there - I'd like to learn the trick please.
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prev parent reply other threads:[~2013-02-14 20:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-14 18:51 Yaroslav
2013-02-14 19:10 ` erik quanstrom
2013-02-14 20:31 ` Yaroslav [this message]
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