Slightly off-topic, but > GPU rendering of windows? Why? GPU rendering of windows is likely more power-efficient than doing the same rendering work on the CPU

Slightly off-topic, but > GPU rendering of windows? Why? GPU rendering of windows is likely more power-efficient than doing the same rendering work on the CPU. Of course, once GPU rendering is possible, developers tend to fool themselves into thinking lots of animations and effects are a good idea, which then sucks up the efficiency gains again...