A few changes

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Mac/SKGLViewRenderer.cs

@@ -42,18 +42,26 @@ namespace SkiaSharp.Views.Forms
 			if (!oneShot && !Element.HasRenderLoop)
 				return;
 
+			// if this is a one shot request, don't bother with the display link
+			if (oneShot)
+			{
+				var nativeView = Control;
+				nativeView?.Display();
+				return;
+			}
+
 			// create the loop
 			displayLink = new CVDisplayLink();
 			displayLink.SetOutputCallback(delegate
 			{
-				var formsView = Control;
-				var nativeView = Element;
+				var nativeView = Control;
+				var formsView = Element;
 
 				// redraw the view
-				formsView?.Display();
+				nativeView?.Display();
 
 				// stop the render loop if this was a one-shot, or the views are disposed
-				if (formsView == null || nativeView == null || !nativeView.HasRenderLoop)
+				if (nativeView == null || formsView == null || !formsView.HasRenderLoop)
 				{
 					displayLink.Stop();
 					displayLink.Dispose();

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Native.Shared/SKCanvasViewRendererBase.cs

@@ -63,7 +63,7 @@ namespace SkiaSharp.Views.Forms
 
 			base.OnElementChanged(e);
 		}
-		
+
 #if __ANDROID__
 		protected override TNativeView CreateNativeControl()
 		{
@@ -80,7 +80,7 @@ namespace SkiaSharp.Views.Forms
 		{
 			base.OnElementPropertyChanged(sender, e);
 
-			if (e.PropertyName == nameof(SKFormsView.IgnorePixelScaling))
+			if (e.PropertyName == SKFormsView.IgnorePixelScalingProperty.PropertyName)
 			{
 				Control.IgnorePixelScaling = Element.IgnorePixelScaling;
 			}

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Native.Shared/SKGLViewRendererBase.cs

@@ -132,7 +132,7 @@ namespace SkiaSharp.Views.Forms
 		private void OnPaintSurface(object sender, SKNativePaintGLSurfaceEventArgs e)
 		{
 			var controller = Element as ISKGLViewController;
-			
+
 			// the control is being repainted, let the user know
 			controller?.OnPaintSurface(new SKPaintGLSurfaceEventArgs(e.Surface, e.RenderTarget));
 		}

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Shared/SKCanvasView.cs

@@ -6,8 +6,8 @@ namespace SkiaSharp.Views.Forms
 	[RenderWith(typeof(SKCanvasViewRenderer))]
 	public class SKCanvasView : View, ISKCanvasViewController
 	{
-		public static readonly BindableProperty IgnorePixelScalingProperty = 
-			BindableProperty.Create(nameof(IgnorePixelScaling), typeof(bool), typeof(SKCanvasView), default(bool));
+		public static readonly BindableProperty IgnorePixelScalingProperty =
+			BindableProperty.Create(nameof(IgnorePixelScaling), typeof(bool), typeof(SKCanvasView), false);
 
 		// the user can subscribe to repaint
 		public event EventHandler<SKPaintSurfaceEventArgs> PaintSurface;

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Shared/SKGLView.cs

@@ -7,7 +7,7 @@ namespace SkiaSharp.Views.Forms
 	public class SKGLView : View, ISKGLViewController
 	{
 		public static readonly BindableProperty HasRenderLoopProperty =
-			BindableProperty.Create("HasRenderLoop", typeof(bool), typeof(SKGLView), default(bool));
+			BindableProperty.Create(nameof(HasRenderLoop), typeof(bool), typeof(SKGLView), false);
 
 		public bool HasRenderLoop
 		{

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.iOS/SKGLViewRenderer.cs

@@ -47,17 +47,25 @@ namespace SkiaSharp.Views.Forms
 			if (!oneShot && !Element.HasRenderLoop)
 				return;
 
+			// if this is a one shot request, don't bother with the display link
+			if (oneShot)
+			{
+				var nativeView = Control;
+				nativeView?.Display();
+				return;
+			}
+
 			// create the loop
 			displayLink = CADisplayLink.Create(() =>
 			{
-				var formsView = Control;
-				var nativeView = Element;
+				var nativeView = Control;
+				var formsView = Element;
 
 				// redraw the view
-				formsView?.Display();
+				nativeView?.Display();
 
 				// stop the render loop if this was a one-shot, or the views are disposed
-				if (formsView == null || nativeView == null || !nativeView.HasRenderLoop)
+				if (nativeView == null || formsView == null || !formsView.HasRenderLoop)
 				{
 					displayLink.Invalidate();
 					displayLink.Dispose();

source/SkiaSharp.Views/SkiaSharp.Views.UWP/SKXamlCanvas.cs

@@ -49,6 +49,8 @@ namespace SkiaSharp.Views.UWP
 			}
 		}
 
+		public double Dpi => dpi;
+
 		public event EventHandler<SKPaintSurfaceEventArgs> PaintSurface;
 
 		protected virtual void OnPaintSurface(SKPaintSurfaceEventArgs e)