Re: [9fans] alpha channel

["Tharaneedharan Vilwanathan" <vdharani@gmail.com>]

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
>
>