public void Wait()
{
m_timer.AddElapsed(MyTimeSpan.FromMilliseconds(-m_delta));
var currentTicks = m_timer.ElapsedTicks;
// Wait for correct frame start
m_targetTicks += TickPerFrame;
if ((currentTicks > m_targetTicks + TickPerFrame * 5) || EnableMaxSpeed)
{
// We're more behind than 5 frames, don't try to catch up
// (or we just do not want to wait in EnableMaxSpeed mode)
m_targetTicks = currentTicks;
}
else
{
// For until correct tick comes
if (EnableUpdateWait)
{
var remaining = MyTimeSpan.FromTicks(m_targetTicks - currentTicks);
int waitMs = (int)(remaining.Milliseconds - 0.1); // To handle up to 0.1ms inaccuracy of timer
if (waitMs > 0)
{
m_waiter.Reset();
MyTimer.StartOneShot(waitMs, m_handler);
m_waiter.Wait(17 + m_delta); // Never wait more than 17ms
//Debug.Assert(MyPerformanceCounter.ElapsedTicks < m_targetTicks);
//VRageRender.MyRenderStats.Write("WaitRemaining", (float)MyPerformanceCounter.TicksToMs(m_targetTicks - MyPerformanceCounter.ElapsedTicks), VRageRender.MyStatTypeEnum.MinMaxAvg, 300, 3);
}
}
// Sanity check to prevent freezing in the loop, wait at most 1 and 1/4 of frame
if (m_targetTicks < (m_timer.ElapsedTicks + TickPerFrame + TickPerFrame / 4))
{
while (m_timer.ElapsedTicks < m_targetTicks)
{
} // Busy wait for the precise moment
}
else // Something went terribly wrong, reset target ticks
{
m_targetTicks = m_timer.ElapsedTicks;
}
}
m_delta = 0;
}
