feat(TimeSmoother): Smoother note falling on vsync mode #835
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Vsync doesn't really ensure evenly timed `MainController::render()` calls. They jitter, and they jitter a lot. More than you'd expect. (You can measure it yourself) This commit adds `TimeSmoother` that *smooths* jittered time when vsync is enabled. If we don't have vsync, It is expected to have frame drops or changes in render() call interval, so `TimeSmoother` is not enabled when vsync is off.
phu54321
changed the title
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I hope it also applies whether vsync applied or not. capping FPS w/o vsync in beatoraja is also very jittery. |
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Vsync doesn't really ensure evenly timed
MainController::render()calls. They jitter, and they jitter a lot. More than you'd expect. (You can measure it yourself) This commit addsTimeSmootherthat smooths jittered time when vsync is enabled. Smoothed time only takes effect on rendering. The commit does not intend to introduce any in-game internal processings.If we don't have vsync, It is expected to have frame drops or changes in render() call interval, so
TimeSmootheris not enabled when vsync is off.Example video: Right is before, Left if after. Both vsync on 60fps display.
Note that because on current
masterbranch the key input is synchronized torender()call, #829 should be merged for better vsync-ed play experience.