From 48c6a170518d18a1395c2aff683314c0291d85c7 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Sun, 27 Sep 2020 10:25:53 +0300
Subject: [PATCH] Skip surface snapshot when doing a blit

---
 src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs b/src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs
index 27b29c6e1e..428087ac56 100644
--- a/src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs
+++ b/src/Skia/Avalonia.Skia/SurfaceRenderTarget.cs
@@ -109,10 +109,16 @@ namespace Avalonia.Skia
         /// <inheritdoc />
         public void Draw(DrawingContextImpl context, SKRect sourceRect, SKRect destRect, SKPaint paint)
         {
-            using (var image = SnapshotImage())
+            if (sourceRect.Left == 0 && sourceRect.Top == 0 && sourceRect.Size == destRect.Size)
             {
-                context.Canvas.DrawImage(image, sourceRect, destRect, paint);
+                _surface.Canvas.Flush();
+                _surface.Draw(context.Canvas, destRect.Left, destRect.Top, paint);
             }
+            else
+                using (var image = SnapshotImage())
+                {
+                    context.Canvas.DrawImage(image, sourceRect, destRect, paint);
+                }
         }
         
         /// <summary>