One rendered frame's accounting of the fixed-step loop (§10, §34).
§10's accumulator runs stepCount fixed steps for the frame and drops the
excess beyond maximumSubSteps; both numbers are recorded because a replay
that re-runs the steps but not the pattern of steps would diverge from the
recording the moment anything reads TimeState.
One rendered frame's accounting of the fixed-step loop (§10, §34).
§10's accumulator runs
stepCountfixed steps for the frame and drops the excess beyondmaximumSubSteps; both numbers are recorded because a replay that re-runs the steps but not the pattern of steps would diverge from the recording the moment anything readsTimeState.