/// <summary>
/// Waits until only Desc.MaxFramesInFlight-1 frames are inflight and will then trigger the OnBeginRendering event.
/// If an application is highly GPU bound, it will wait for the GPU to complete the rendering for this swapChain in this function.
/// </summary>
public void BeginFrame()
{
// Fullfill the MaxFramesInFlight constraint.
Assert.Debug(NumFramesInFlight <= Desc.MaxFramesInFlight, "It should be impossible to have more than Desc.MaxFramesInFlight frames in flight.");
if (NumFramesInFlight == Desc.MaxFramesInFlight)
{
FrameFence.WaitForCompletion(NumCompletedFramesGPU + 1, TimeSpan.MaxValue);
}
// Anounce frame start to all listeners.
OnBeginFrame?.Invoke(activeInFlightFrameIndex);
}
internal void CallOnBeginFrame()
{
OnBeginFrame?.Invoke();
}
