public void ToggleMetering(int frameCount)
{
if (meterFrameCount == 0)
{
MeterManager.ClearEvents();
pendingMeterFrameCount = frameCount;
}
else
{
// Set it to 1 so we'll stop metering at the end of the next frame
meterFrameCount = 1;
}
}
/// <summary>
/// Starts the default rendering loop.
/// </summary>
public void StartRendering()
{
bool cachedMeterLongestFrame = false;
int frameStartTime = 0;
Debug.Assert(activeRenderSystem != null, "Engine cannot start rendering without an active RenderSystem.");
activeRenderSystem.InitRenderTargets();
// initialize the vars
lastStartTime = lastEndTime = timer.Milliseconds;
// reset to false so that rendering can begin
queuedEnd = false;
while (!queuedEnd)
{
// Make sure we're collecting if it's called for
if (meterFrameCount > 0)
{
MeterManager.Collecting = true;
}
else if (meterLongestFrame)
{
cachedMeterLongestFrame = true;
MeterManager.Collecting = true;
frameStartTime = System.Environment.TickCount;
}
// allow OS events to process (if the platform requires it
frameMeter.Enter();
eventMeter.Enter();
PlatformManager.Instance.DoEvents();
eventMeter.Exit();
if (suspendRendering)
{
Thread.Sleep(100);
frameMeter.Exit();
continue;
}
renderMeter.Enter();
RenderOneFrame();
renderMeter.Exit();
if (activeRenderSystem.RenderTargetCount == 0)
{
QueueEndRendering();
}
frameMeter.Exit();
// Turn metering on or off, and generate the report if
// we're done
if (meterFrameCount > 0)
{
meterFrameCount--;
if (meterFrameCount == 0)
{
MeterManager.Collecting = false;
MeterManager.Report("Frame Processing");
}
}
else if (pendingMeterFrameCount > 0)
{
// We'll start metering next frame
meterFrameCount = pendingMeterFrameCount;
pendingMeterFrameCount = 0;
}
else if (cachedMeterLongestFrame)
{
MeterManager.Collecting = false;
int frameTime = System.Environment.TickCount - frameStartTime;
if (frameTime > longestFrameTime)
{
longestFrameTime = frameTime;
longestFrameMeterEvents = MeterManager.ReturnEvents();
}
else
{
MeterManager.ClearEvents();
}
}
}
}
