void StartRenderLoop()
{
// If the render loop is already running then do not start another thread.
if (mRenderLoopWorker != null && mRenderLoopWorker.Status == AsyncStatus.Started)
{
return;
}
//var throttler = new Helpers.EventThrottler<TextChangedEventArgs>(Constants.TypingTimeout, handler => SearchField.TextChanged += new TextChangedEventHandler(handler));
//throttler.Invoked += (s, args) =>
//{
// // s is SearchField
// // args is TextChangedEventArgs
//};
// Create a task for rendering that will be run on a background thread.
var workItemHandler =
new Windows.System.Threading.WorkItemHandler(action =>
{
lock (mRenderSurfaceCriticalSection)
{
mOpenGLES.MakeCurrent(mRenderSurface);
//var renderer = new RendererBase();
var renderer = RendererInit();
while (action.Status == AsyncStatus.Started)
{
int panelWidth = 0;
int panelHeight = 0;
mOpenGLES.GetSurfaceDimensions(mRenderSurface, ref panelWidth, ref panelHeight);
// Logic to update the scene could go here
renderer.UpdateWindowSize(panelWidth, panelHeight);
renderer.Draw();
// The call to eglSwapBuffers might not be successful (i.e. due to Device Lost)
// If the call fails, then we must reinitialize EGL and the GL resources.
if (mOpenGLES.SwapBuffers(mRenderSurface) != EGL.TRUE)
{
// XAML objects like the SwapChainPanel must only be manipulated on the UI thread.
#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
swapChainPanel.Dispatcher.RunAsync(CoreDispatcherPriority.High,
new DispatchedHandler(() =>
{
RecoverFromLostDevice();
}));
#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
return;
}
}
}
});
// Run task on a dedicated high priority background thread.
mRenderLoopWorker = Windows.System.Threading.ThreadPool.RunAsync(workItemHandler,
Windows.System.Threading.WorkItemPriority.High,
Windows.System.Threading.WorkItemOptions.TimeSliced);
}
void StartRenderLoop()
{
// If the render loop is already running then do not start another thread.
if (mRenderLoopWorker != null && mRenderLoopWorker.Status == Windows.Foundation.AsyncStatus.Started)
{
return;
}
// Create a task for rendering that will be run on a background thread.
var workItemHandler =
new Windows.System.Threading.WorkItemHandler(action =>
{
lock (mRenderSurfaceCriticalSection)
{
mOpenGLES.MakeCurrent(mRenderSurface);
SimpleRenderer renderer = new SimpleRenderer();
while (action.Status == Windows.Foundation.AsyncStatus.Started)
{
int panelWidth = 0;
int panelHeight = 0;
mOpenGLES.GetSurfaceDimensions(mRenderSurface, ref panelWidth, ref panelHeight);
// Logic to update the scene could go here
renderer.UpdateWindowSize(panelWidth, panelHeight);
renderer.Draw();
// The call to eglSwapBuffers might not be successful (i.e. due to Device Lost)
// If the call fails, then we must reinitialize EGL and the GL resources.
if (mOpenGLES.SwapBuffers(mRenderSurface) != EGL.TRUE)
{
// XAML objects like the SwapChainPanel must only be manipulated on the UI thread.
swapChainPanel.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High,
new Windows.UI.Core.DispatchedHandler(() =>
{
RecoverFromLostDevice();
}));
return;
}
}
}
});
// Run task on a dedicated high priority background thread.
mRenderLoopWorker = Windows.System.Threading.ThreadPool.RunAsync(workItemHandler,
Windows.System.Threading.WorkItemPriority.High,
Windows.System.Threading.WorkItemOptions.TimeSliced);
}
private async void DrawNextFrame(IntPtr context)
{
// Wait for the UI Thread to run to render the next frame.
await videoBox.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, new DispatchedHandler(() =>
{
// Get the Width and Height of the Window (it can change at anytime)
int w = (int)((Frame)Window.Current.Content).ActualWidth;
int h = (int)((Frame)Window.Current.Content).ActualHeight;
// Draw the next frame, swap buffers, and report the frame has been flipped
mpv.OpenGLCallbackDraw(0, w, -h);
mOpenGLES.SwapBuffers(mRenderSurface);
mpv.OpenGLCallbackReportFlip();
}));
}