> 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
