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by dale_glass
1117 days ago
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Every window looks perfect all the time, and it doesn't matter if a program is busy. Without composition, each program repaints itself. Which means there's an appreciable lag, and if the program is stuck you can get a blank box if a previously covered program is uncovered. This can be an annoyance if you need to read something from there. Eg, an actual example is a program being blocked by a modal dialog stops being repainted. If the dialog asks you "Enter a password" and the what for is written on the no longer repainting parent you may have a problem. |
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