From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <dac0a5820812280356x260a9eb2k6c42b7ffd107155c@mail.gmail.com>
Date: Sun, 28 Dec 2008 03:56:19 -0800
From: "Tharaneedharan Vilwanathan" <vdharani@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@9fans.net>
In-Reply-To: <dd6fe68a0812271510o5da36b71qfcee9b53c0b64c92@mail.gmail.com>
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	<dd6fe68a0812271510o5da36b71qfcee9b53c0b64c92@mail.gmail.com>
Subject: Re: [9fans] alpha channel
Topicbox-Message-UUID: 729fc398-ead4-11e9-9d60-3106f5b1d025

hi russ,

thanks for the info.

thanks
dharani

On Sat, Dec 27, 2008 at 3:10 PM, Russ Cox <rsc@swtch.com> wrote:
>> this is regarding alpha channel.
>> i am able to change the alpha value for an image by setting new alpha value
>> for every pixel.
>> but i was thinking we also could set the alpha value for all of the pixels
>> in a window/screen just but setting the value somewhere, say using ctl. is
>> this not possible in plan9 or inferno? i am wondering how i got that
>
> the graphics operators support alpha blending
> but the window system still assumes, at a deep level,
> that windows are opaque rectangles.
>
> russ
>
>