Set default to high quality

src/Avalonia.Visuals/Media/RenderOptions.cs

@@ -8,11 +8,12 @@ namespace Avalonia.Media
     public class RenderOptions
     {
         /// <summary>
-        /// Defines the <see cref="Visuals.Media.Imaging.BitmapInterpolationMode"/> property.
+        /// Defines the <see cref="BitmapInterpolationMode"/> property.
         /// </summary>
-        public static readonly StyledProperty<BitmapInterpolationMode> BitmapInterpolationMode =
+        public static readonly StyledProperty<BitmapInterpolationMode> BitmapInterpolationModeProperty =
             AvaloniaProperty.RegisterAttached<RenderOptions, AvaloniaObject, BitmapInterpolationMode>(
-                "BitmapInterpolationMode",
+                "BitmapInterpolationMode", 
+                BitmapInterpolationMode.HighQuality,
                 inherits: true);
 
         /// <summary>
@@ -22,7 +23,7 @@ namespace Avalonia.Media
         /// <returns>The control's left coordinate.</returns>
         public static BitmapInterpolationMode GetBitmapInterpolationMode(AvaloniaObject element)
         {
-            return element.GetValue(BitmapInterpolationMode);
+            return element.GetValue(BitmapInterpolationModeProperty);
         }
 
         /// <summary>
@@ -32,7 +33,7 @@ namespace Avalonia.Media
         /// <param name="value">The left value.</param>
         public static void SetBitmapInterpolationMode(AvaloniaObject element, BitmapInterpolationMode value)
         {
-            element.SetValue(BitmapInterpolationMode, value);
+            element.SetValue(BitmapInterpolationModeProperty, value);
         }
     }
 }

src/Avalonia.Visuals/Media/TileBrush.cs

@@ -77,6 +77,11 @@ namespace Avalonia.Media
         public static readonly StyledProperty<TileMode> TileModeProperty =
             AvaloniaProperty.Register<TileBrush, TileMode>(nameof(TileMode));
 
+        static TileBrush()
+        {
+            RenderOptions.BitmapInterpolationModeProperty.OverrideDefaultValue<TileBrush>(BitmapInterpolationMode.Default);
+        }
+
         /// <summary>
         /// Gets or sets the horizontal alignment of a tile in the destination.
         /// </summary>