misc: chore: OS + CPU arch helpers

src/Ryujinx.Common/Helpers/RunningPlatform.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Runtime.InteropServices;
+// ReSharper disable MemberCanBePrivate.Global
+// ReSharper disable InconsistentNaming
+
+namespace Ryujinx.Common.Helper
+{
+    public static class RunningPlatform
+    {
+        public static bool IsMacOS => OperatingSystem.IsMacOS();
+        public static bool IsWindows => OperatingSystem.IsWindows();
+        public static bool IsLinux => OperatingSystem.IsLinux();
+
+        public static bool IsIntelMac => IsMacOS && RuntimeInformation.OSArchitecture is Architecture.X64;
+        public static bool IsArmMac => IsMacOS && RuntimeInformation.OSArchitecture is Architecture.Arm64;
+        
+        public static bool IsX64Windows => IsWindows && (RuntimeInformation.OSArchitecture is Architecture.X64);
+        public static bool IsArmWindows => IsWindows && (RuntimeInformation.OSArchitecture is Architecture.Arm64);
+        
+        public static bool IsX64Linux => IsLinux && (RuntimeInformation.OSArchitecture is Architecture.X64);
+        public static bool IsArmLinux => IsLinux && (RuntimeInformation.OSArchitecture is Architecture.Arm64);
+    }
+}

src/Ryujinx.Common/TitleIDs.cs

@@ -1,5 +1,6 @@
 using Gommon;
 using Ryujinx.Common.Configuration;
+using Ryujinx.Common.Helper;
 using System;
 using System.Linq;
 using System.Runtime.InteropServices;
@@ -21,7 +22,7 @@ namespace Ryujinx.Common
                     return currentBackend;
             }
 
-            if (!(OperatingSystem.IsMacOS() && RuntimeInformation.ProcessArchitecture is Architecture.Arm64))
+            if (!RunningPlatform.IsArmMac)
                 return GraphicsBackend.Vulkan;
 
             return GreatMetalTitles.ContainsIgnoreCase(titleId) ? GraphicsBackend.Metal : GraphicsBackend.Vulkan;

src/Ryujinx/UI/Windows/MainWindow.axaml.cs

@@ -736,9 +736,7 @@ namespace Ryujinx.Ava.UI.Windows
             });
         }
 
-        private static bool _intelMacWarningShown = !(OperatingSystem.IsMacOS() &&
-                                                     (RuntimeInformation.OSArchitecture == Architecture.X64 ||
-                                                      RuntimeInformation.OSArchitecture == Architecture.X86));
+        private static bool _intelMacWarningShown = !RunningPlatform.IsIntelMac;
 
         public static async Task ShowIntelMacWarningAsync()
         {