Function bevy_framepace::framerate_limiter

pub fn framerate_limiter(
    timer: ResMut<'_, FrameTimer>,
    target_frametime: Res<'_, FrametimeLimit>,
    stats: Res<'_, FramePaceStats>
)

Accurately sleeps until it’s time to start the next frame.

The spin_sleep dependency makes it possible to get extremely accurate sleep times across platforms. Using std::thread::sleep() will not be precise enough, especially windows. Using a spin lock, even with std::hint::spin_loop(), will result in significant power usage.

spin_sleep sleeps as long as possible given the platform’s sleep accuracy, and spins for the remainder. The dependency is however not WASM compatible, which is fine, because frame limiting should not be used in a browser; this would compete with the browser’s frame limiter.