double-buffering at 120 fps

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Created Jun ’18

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Is there a way to get double-buffering at 120Hz instead of triple bufferig? I'm trying to minimize UI latency.

When I use Xcode's Metal Game template (which renders a rotating cube), I still get triple-buffering at 120hz, despite the trivial amount of work. It's double-buffered at 60hz.

thanks!

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Answer 1

Audulus OP

Jul ’18

SO question here: https://stackoverflow.com/questions/51138426/ios-metal-double-buffering-at-120-fps

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Answer 2

Graphics and Games Engineer OP

Apple

Jul ’18

Apps can control the max number Metal of drawables CAMetalLayer.maximumDrawableCount. Setting this to 2 will for double buffering (3 is the default). Be aware that this makes it more likely -[CAMetalLayer nextDrawable] or MTKView exquivalents will return nil forcingyou to drop a frame.

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