private void OnRenderingLock(object sender, SKNativePaintGLSurfaceEventArgs e)
{
lock (_renderLock)
{
OnRendering(sender, e);
}
}
private void InitializeGameLoop(Action onUpdate, SKNativePaintGLSurfaceEventArgs e, bool isMultiThreaded)
{
// Run update loop and register for rendering events.
onUpdate();
_renderLoop = new RenderLoop();
_renderLoop.Start(onUpdate);
Initialized?.Invoke(this, e.Surface);
}
private void OnRendering(object sender, SKNativePaintGLSurfaceEventArgs e)
{
_shouldRender = false;
var surface = e.Surface;
var canvas = surface.Canvas;
var worldMatrix = SKMatrix.MakeIdentity();
// Apply DPI scaling.
SKMatrix.Concat(ref worldMatrix, worldMatrix, SKMatrix.MakeScale(ScaleFactor, ScaleFactor));
canvas.ResetMatrix();
canvas.SetMatrix(worldMatrix);
Draw?.Invoke(this, e.Surface);
}
/// <summary>
/// Performs custom initialization and starts game time.
/// </summary>
/// <param name="sender">Sender.</param>
/// <param name="e">Event args.</param>
private void Initialize(object sender, SKNativePaintGLSurfaceEventArgs e)
{
SetupInput();
PlatformInitalize(sender, e);
if (Thread.CurrentThread.ManagedThreadId == _uiThreadId)
{
this.PaintSurface += OnRendering;
InitializeGameLoop(() => OnUpdate(), e, false);
}
else
{
this.PaintSurface += OnRenderingLock;
RunOnUiThread(() =>
{
InitializeGameLoop(() => OnUpdateLock(), e, true);
});
}
}
protected override void OnPaintSurface(SkiaSharp.Views.UWP.SKPaintGLSurfaceEventArgs e)
{
base.OnPaintSurface(e);
controller.OnPaintSurface(new SKPaintGLSurfaceEventArgs(e.Surface, e.RenderTarget));
}
partial void PlatformInitalize(object sender, SKNativePaintGLSurfaceEventArgs e)
{
EnableRenderLoop = false;
DrawInBackground = false;
}
/// <summary> /// Platform-specific initialization steps. /// </summary> partial void PlatformInitalize(object sender, SKNativePaintGLSurfaceEventArgs e);
/// <summary>
/// Runs when the underlying control is done initializing (first rendering goes through).
/// </summary>
/// <param name="sender">Native control.</param>
/// <param name="e">Event args.</param>
private void OnNativeControlInitialized(object sender, SKNativePaintGLSurfaceEventArgs e)
{
this.PaintSurface -= OnNativeControlInitialized;
Initialize(sender, e);
}
