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The Radeon Pro 560 on my MacBook Pro can draw "up to 75W". I don't know anything about how it manages power, but I do recall that Apple recommended in a WWDC se
by pohl 9y ago
The Radeon Pro 560 on my MacBook Pro can draw "up to 75W". I don't know anything about how it manages power, but I do recall that Apple recommended in a WWDC session on writing energy-efficient apps that one should be careful to not trigger the discrete GPU when the integrated Intel GPU is sufficient. So that leads to another question: on my machine, which GPU would Webrender be using? I suppose I could find out experimentally, but I thought I'd ask in case someone here knows.
- epmaybe 9y agoSince the 15" MBP charger can deliver up to 87W, if you have full power draw on the MBP will you actually not be able to fully supply power over AC? I assume that the CPU also takes up around 20-30W.
- metajack 9y agoFor WebRender, we targeted the integrated GPUs. You still need some logic to ensure you don't accidentally kick the discrete one into gear, but the integrated ones definitely have enough performance for almost anything WR will throw at it.
- pohl 9y agoThat's encouraging news. Thank you!
- esaym 9y agoIs there any requirements for a minimum version of opengl for WebRender that you know of?
- dman 9y agoCould you elaborate the edge cases which fall beyond "almost anything WR will throw at it" ie what are the use cases where you would end up waking the discrete GPU?
- lightedman 9y agoI would personally imagine anything more complex than Quake Live would probably trigger the discrete GPU.