UI: Add Metal surface creation for MoltenVK (#3980)

* Initial implementation of metal surface across UIs

* Fix SDL2 on windows

* Update Ryujinx/Ryujinx.csproj

Co-authored-by: Mary-nyan <thog@protonmail.com>

* Address Feedback

Co-authored-by: Mary-nyan <thog@protonmail.com>

Ryujinx.Ava/Ui/Controls/EmbeddedWindow.cs

@@ -2,11 +2,10 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Platform;
+using Ryujinx.Ava.Ui.Helper;
 using SPB.Graphics;
 using SPB.Platform;
 using SPB.Platform.GLX;
-using SPB.Platform.X11;
-using SPB.Windowing;
 using System;
 using System.Runtime.InteropServices;
 using System.Runtime.Versioning;
@@ -23,6 +22,10 @@ namespace Ryujinx.Ava.Ui.Controls
         protected GLXWindow X11Window { get; set; }
         protected IntPtr WindowHandle { get; set; }
         protected IntPtr X11Display { get; set; }
+        protected IntPtr NsView { get; set; }
+        protected IntPtr MetalLayer { get; set; }
+
+        private UpdateBoundsCallbackDelegate _updateBoundsCallback;
 
         public event EventHandler<IntPtr> WindowCreated;
         public event EventHandler<Size> SizeChanged;
@@ -58,6 +61,7 @@ namespace Ryujinx.Ava.Ui.Controls
         private void StateChanged(Rect rect)
         {
             SizeChanged?.Invoke(this, rect.Size);
+            _updateBoundsCallback?.Invoke(rect);
         }
 
         protected override IPlatformHandle CreateNativeControlCore(IPlatformHandle parent)
@@ -70,6 +74,11 @@ namespace Ryujinx.Ava.Ui.Controls
             {
                 return CreateWin32(parent);
             }
+            else if (OperatingSystem.IsMacOS())
+            {
+                return CreateMacOs(parent);
+            }
+
             return base.CreateNativeControlCore(parent);
         }
 
@@ -85,6 +94,10 @@ namespace Ryujinx.Ava.Ui.Controls
             {
                 DestroyWin32(control);
             }
+            else if (OperatingSystem.IsMacOS())
+            {
+                DestroyMacOS();
+            }
             else
             {
                 base.DestroyNativeControlCore(control);
@@ -187,6 +200,16 @@ namespace Ryujinx.Ava.Ui.Controls
             return DefWindowProc(hWnd, msg, (IntPtr)wParam, (IntPtr)lParam);
         }
 
+        [SupportedOSPlatform("macos")]
+        IPlatformHandle CreateMacOs(IPlatformHandle parent)
+        {
+            MetalLayer = MetalHelper.GetMetalLayer(out IntPtr nsView, out _updateBoundsCallback);
+
+            NsView = nsView;
+
+            return new PlatformHandle(nsView, "NSView");
+        }
+
         void DestroyLinux()
         {
             X11Window?.Dispose();
@@ -198,5 +221,11 @@ namespace Ryujinx.Ava.Ui.Controls
             DestroyWindow(handle.Handle);
             UnregisterClass(_className, GetModuleHandle(null));
         }
+
+        [SupportedOSPlatform("macos")]
+        void DestroyMacOS()
+        {
+            MetalHelper.DestroyMetalLayer(NsView, MetalLayer);
+        }
     }
 }

Ryujinx.Ava/Ui/Controls/VulkanEmbeddedWindow.cs

@@ -3,6 +3,7 @@ using Ryujinx.Ava.Ui.Controls;
 using Silk.NET.Vulkan;
 using SPB.Graphics.Vulkan;
 using SPB.Platform.GLX;
+using SPB.Platform.Metal;
 using SPB.Platform.Win32;
 using SPB.Platform.X11;
 using SPB.Windowing;
@@ -37,6 +38,10 @@ namespace Ryujinx.Ava.Ui
             {
                 _window = new SimpleX11Window(new NativeHandle(X11Display), new NativeHandle(WindowHandle));
             }
+            else if (OperatingSystem.IsMacOS())
+            {
+                _window = new SimpleMetalWindow(new NativeHandle(NsView), new NativeHandle(MetalLayer));
+            }
             else
             {
                 throw new PlatformNotSupportedException();

Ryujinx.Ava/Ui/ViewModels/SettingsViewModel.cs

@@ -108,6 +108,8 @@ namespace Ryujinx.Ava.Ui.ViewModels
             }
         }
 
+        public bool IsOpenGLAvailable => !OperatingSystem.IsMacOS();
+
         public bool DirectoryChanged
         {
             get => _directoryChanged;

Ryujinx.Ava/Ui/Windows/MainWindow.axaml.cs

@@ -154,6 +154,12 @@ namespace Ryujinx.Ava.Ui.Windows
             }
         }
 
+        protected override void HandleScalingChanged(double scale)
+        {
+            Program.DesktopScaleFactor = scale;
+            base.HandleScalingChanged(scale);
+        }
+
         public void Application_Opened(object sender, ApplicationOpenedEventArgs args)
         {
             if (args.Application != null)

Ryujinx.Ava/Ui/Windows/SettingsWindow.axaml

@@ -540,7 +540,7 @@
                                     <ComboBoxItem IsVisible="{Binding IsVulkanAvailable}">
                                         <TextBlock Text="Vulkan" />
                                     </ComboBoxItem>
-                                    <ComboBoxItem>
+                                    <ComboBoxItem IsEnabled="{Binding IsOpenGLAvailable}">
                                         <TextBlock Text="OpenGL" />
                                     </ComboBoxItem>
                                 </ComboBox>