From 1f8400a6ff2da8f627285f2fdccd03803dedb19c Mon Sep 17 00:00:00 2001
From: Jumar Macato <hikari.netto23@gmail.com>
Date: Mon, 25 Jun 2018 17:09:53 +0800
Subject: [PATCH] Fix ghosting artifacts on both Renderers #1687

---
 src/Avalonia.Visuals/Rendering/DeferredRenderer.cs  | 2 ++
 src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
index a14923b410..ed557b8b74 100644
--- a/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
+++ b/src/Avalonia.Visuals/Rendering/DeferredRenderer.cs
@@ -337,6 +337,8 @@ namespace Avalonia.Rendering
 
         private void RenderComposite(Scene scene, IDrawingContextImpl context)
         {
+            context.Clear(Colors.Transparent);
+            
             var clientRect = new Rect(scene.Size);
 
             foreach (var layer in scene.Layers)
diff --git a/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs b/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
index 2118b66de2..93bb36c3cd 100644
--- a/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
+++ b/src/Avalonia.Visuals/Rendering/ImmediateRenderer.cs
@@ -224,6 +224,9 @@ namespace Avalonia.Rendering
             var clipToBounds = visual.ClipToBounds;
             var bounds = new Rect(visual.Bounds.Size);
 
+            if (visual == _root)
+                context.PlatformImpl.Clear(Colors.Transparent);
+
             if (visual.IsVisible && opacity > 0)
             {
                 var m = Matrix.CreateTranslation(visual.Bounds.Position);