From e29faa95c3958727ea21720b77ad5ad2a645fa67 Mon Sep 17 00:00:00 2001
From: kpreisser <kpreisser@users.noreply.github.com>
Date: Sun, 10 Oct 2021 11:11:48 +0200
Subject: [PATCH] Don't check for presence of "d3dcompiler_47.dll" when running
 as ARM64, because that file isn't present in the CEF Redist for this
 architecture.

Issue #2944
---
 CefSharp/DependencyChecker.cs | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/CefSharp/DependencyChecker.cs b/CefSharp/DependencyChecker.cs
index 25e8c09d89..79475ac79b 100644
--- a/CefSharp/DependencyChecker.cs
+++ b/CefSharp/DependencyChecker.cs
@@ -5,7 +5,13 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+#if NETCOREAPP
+using System.Linq;
+#endif
 using System.Reflection;
+#if NETCOREAPP
+using System.Runtime.InteropServices;
+#endif
 using System.Text;
 
 namespace CefSharp
@@ -21,6 +27,11 @@ public static class DependencyChecker
         /// </summary>
         public const string LocalesPackFile = @"locales\en-US.pak";
 
+        /// <summary>
+        /// File name of the Direct3D Compiler DLL.
+        /// </summary>
+        private const string D3DCompilerDll = "d3dcompiler_47.dll";
+
         /// <summary>
         /// List of Cef Dependencies
         /// </summary>
@@ -60,7 +71,8 @@ public static class DependencyChecker
             // Note: Without these components HTML5 accelerated content like 2D canvas, 3D CSS and WebGL will not function.
             "libEGL.dll",
             "libGLESv2.dll",
-            "d3dcompiler_47.dll",
+            // The D3D Compiler isn't included in the win-arm64 redist; we remove it in the static constructor.
+            D3DCompilerDll,
             //Crashpad support
             "chrome_elf.dll"
         };
@@ -99,6 +111,17 @@ public static class DependencyChecker
 #endif
         };
 
+#if NETCOREAPP
+        static DependencyChecker()
+        {
+            // win-arm64 doesn't ship with a copy of the D3D Compiler, it's included with the OS.
+            if (RuntimeInformation.ProcessArchitecture is Architecture.Arm64)
+            {
+                CefOptionalDependencies = CefOptionalDependencies.Where(x => x != D3DCompilerDll).ToArray();
+            }
+        }
+#endif
+
         /// <summary>
         /// CheckDependencies iterates through the list of Cef and CefSharp dependencines
         /// relative to the path provided and returns a list of missing ones