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Alexander Larsson authored
In the ancient X days you could have Xservers that had multiple active windows, like one truecolor and one 8bit palette. Then most apps ran in 8bpp but a single window would use truecolor. This is done by specifying different visuals for the windows. To make this work we ensured that a window with a visual different from its parent gets a native subwindow, so that X can tell the hardware to do its magic. These days the only real time we get two different visual is when one is a rgba visual and the other is not. So, the code to check this doesn't really do anything but get in the way when someone accidentally manages to not get a rgba visual on a child window (see bb7054b5). So, to avoid such errors we just remove the "different visual than parent" check.
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