Enabled debug support for our direct2d factory in debug builds.

src/Windows/Avalonia.Direct2D1/Direct2D1Platform.cs

@@ -26,8 +26,12 @@ namespace Avalonia.Direct2D1
     {
         private static readonly Direct2D1Platform s_instance = new Direct2D1Platform();
 
-        private static readonly SharpDX.Direct2D1.Factory s_d2D1Factory = new SharpDX.Direct2D1.Factory();
-
+        private static readonly SharpDX.Direct2D1.Factory s_d2D1Factory =
+#if DEBUG
+            new SharpDX.Direct2D1.Factory(SharpDX.Direct2D1.FactoryType.SingleThreaded, SharpDX.Direct2D1.DebugLevel.Error);
+#else
+            new SharpDX.Direct2D1.Factory(SharpDX.Direct2D1.FactoryType.SingleThreaded, SharpDX.Direct2D1.DebugLevel.None);
+#endif
         private static readonly SharpDX.DirectWrite.Factory s_dwfactory = new SharpDX.DirectWrite.Factory();
 
         private static readonly SharpDX.WIC.ImagingFactory s_imagingFactory = new SharpDX.WIC.ImagingFactory();