From b0bc3f4ea8fd47237f946ad72e59da4d399a1568 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Mon, 14 Sep 2020 01:56:40 -0700
Subject: [PATCH] check for windows 10 to decide to use windows.ui.comp tree to
 render into.

---
 src/Windows/Avalonia.Win32/WindowImpl.cs | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index 3047f44a71..d964e490c0 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -104,17 +104,17 @@ namespace Avalonia.Win32
             _framebuffer = new FramebufferManager(_hwnd);
 
             if (Win32GlManager.EglFeature != null)
-            {                
-                _gl = new CompositionEglGlPlatformSurface(Win32GlManager.EglFeature.DeferredContext, this);
-            }
-
-            if (_gl is CompositionEglGlPlatformSurface cgl)
-            {
-                cgl.AttachToCompositionTree(_hwnd);
-            }
-            else
             {
-                CompositionHost.Instance.InitialiseWindowCompositionTree(_hwnd);
+                if (Win32Platform.WindowsVersion.Major >= 10)
+                {
+                    var cgl = new CompositionEglGlPlatformSurface(Win32GlManager.EglFeature.DeferredContext, this);
+                    cgl.AttachToCompositionTree(_hwnd);
+                    _gl = cgl;
+                }
+                else
+                {
+                    _gl = new EglGlPlatformSurface(Win32GlManager.EglFeature.DeferredContext, this);
+                }
             }
 
             Screen = new ScreenImpl();