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A comment on Chrome is a Google Service that happens to include a Browser Engine. Parent comment

Re:Chrome is a Google Service that happens to include a Brow... by kevingadd on Saturday September 22, 2018 @08:20PM (#18048699)
There's some potential for the new WebRender stack to improve battery life a lot - part of the reason why Edge is so good at saving battery is that it makes good use of modern GPUs to save power, and Firefox's new graphics stack is another modern one that attempts to avoid wasting CPU/GPU to do old-style rendering of web pages
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Re:Chrome is a Google Service that happens to include a Brow... by pcwalton on Saturday September 22, 2018 @09:03PM (#18048844)
It's really that we should be using the OS compositor more than we are, particularly on macOS. I think I'm probably going to be working on this, or at least finding someone to work on it, soon. WebRender should make this easier, because we should be able to get away with using a smaller subset of the OS composition functionality than other browsers do.

Anyway, for now, if you're on macOS, set gfx.compositor.glcontext.opaque to true in about:config for a large increase in energy efficiency at the cost of some visual effects.

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