> Why? You do realize that there are features that simply cannot be provided any other > way, or at least not without incredible hacks such as hijacking X window handles and > whatnot (and even if you hijack an X window handle, how do you make the output of > that X window display in a virtually rendered arcade cabinet "off in the distance"?).
On a coherent graphics/windowing system you could use the captured window as a texture. X11 is not that system, although I think Windows and OS X would allow it, and I have hopes for Wayland.
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