/// <summary>
/// main window loop, exits on GLFW3 exit event. Before entering the rendering loop, the following methods are called:
/// - initVulkan (device, queues and swapchain creations).
/// - OnResize (create there your frame buffers couple to the swapchain and trigger the recording of your command buffers for the presentation.
/// - UpdateView (generaly used when the camera setup has changed to update MVP matrices)
/// The rendering loop consist of the following steps:
/// - render (the default one will submit the default command buffers to the presentQueue and trigger a queue present for each swapchain images.
/// - if the `updateViewRequested` field is set to 'true', call the `UpdateView` method.
/// - frame counting and chrono.
/// - if elapsed time reached `UpdateFrequency` value, the `Update` method is called and the elapsed time chrono is reseet.
/// - GLFW events are polled at the end of the loop.
/// </summary>
public virtual void Run()
{
initVulkan();
OnResize();
UpdateView();
frameChrono = Stopwatch.StartNew();
long totTime = 0;
while (!Glfw3.WindowShouldClose(hWin))
{
render();
if (updateViewRequested)
{
UpdateView();
}
frameCount++;
if (frameChrono.ElapsedMilliseconds > UpdateFrequency)
{
Update();
frameChrono.Stop();
totTime += frameChrono.ElapsedMilliseconds;
fps = (uint)((double)frameCount / (double)totTime * 1000.0);
Glfw3.SetWindowTitle(hWin, "FPS: " + fps.ToString());
if (totTime > 2000)
{
frameCount = 0;
totTime = 0;
}
frameChrono.Restart();
}
Glfw3.PollEvents();
}
}