add nativaot libryujinx project

src/LibRyujinx.NativeSample/LibRyujinx.NativeSample.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="OpenTK" />
+    </ItemGroup>
+</Project>

src/LibRyujinx.NativeSample/LibRyujinxInterop.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LibRyujinx.Sample
+{
+    internal static class LibRyujinxInterop
+    {
+        private const string dll = "LibRyujinx.Shared.dll";
+
+        [DllImport(dll, EntryPoint = "initialize")]
+        public extern static bool Initialize(IntPtr path);
+
+
+        [DllImport(dll, EntryPoint = "graphics_initialize")]
+        public extern static bool InitializeGraphics(GraphicsConfiguration graphicsConfiguration);
+
+        [DllImport(dll, EntryPoint = "device_initialize")]
+        internal extern static bool InitializeDevice();
+
+        [DllImport(dll, EntryPoint = "graphics_initialize_renderer")]
+        internal extern static bool InitializeGraphicsRenderer(GraphicsBackend backend, NativeGraphicsInterop nativeGraphicsInterop);
+
+        [DllImport(dll, EntryPoint = "device_load")]
+        internal extern static bool LoadApplication(IntPtr pathPtr);
+
+        [DllImport(dll, EntryPoint = "graphics_renderer_run_loop")]
+        internal extern static void RunLoop();
+
+        [DllImport(dll, EntryPoint = "graphics_renderer_set_size")]
+        internal extern static void SetRendererSize(int width, int height);
+
+        [DllImport(dll, EntryPoint = "graphics_renderer_set_swap_buffer_callback")]
+        internal extern static void SetSwapBuffersCallback(IntPtr swapBuffers);
+
+        [DllImport(dll, EntryPoint = "graphics_renderer_set_vsync")]
+        internal extern static void SetVsyncState(bool enabled);
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct GraphicsConfiguration
+    {
+        public float ResScale = 1f;
+        public float MaxAnisotropy = -1;
+        public bool FastGpuTime = true;
+        public bool Fast2DCopy = true;
+        public bool EnableMacroJit = false;
+        public bool EnableMacroHLE = true;
+        public bool EnableShaderCache = true;
+        public bool EnableSpirvCompilationOnVulkan = true;
+        public bool EnableTextureRecompression = false;
+        public BackendThreading BackendThreading = BackendThreading.Auto;
+
+        public GraphicsConfiguration()
+        {
+        }
+    }
+    public enum GraphicsBackend
+    {
+        Vulkan,
+        OpenGl
+    }
+    public enum BackendThreading
+    {
+        Auto,
+        Off,
+        On
+    }
+
+    public struct NativeGraphicsInterop
+    {
+        public IntPtr GlGetProcAddress;
+        public IntPtr VkNativeContextLoader;
+        public IntPtr VkCreateSurface;
+        public IntPtr VkRequiredExtensions;
+        public int VkRequiredExtensionsCount;
+    }
+}

src/LibRyujinx.NativeSample/NativeWindow.cs

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+using LibRyujinx.Sample;
+using OpenTK.Graphics.OpenGL;
+using OpenTK.Windowing.Desktop;
+using OpenTK.Windowing.GraphicsLibraryFramework;
+using System.Runtime.InteropServices;
+
+namespace LibRyujinx.NativeSample
+{
+    internal class NativeWindow : OpenTK.Windowing.Desktop.NativeWindow
+    {
+        private nint del;
+        public delegate void SwapBuffersCallback();
+        public delegate IntPtr GetProcAddress(string name);
+        public delegate IntPtr CreateSurface(IntPtr instance);
+
+        private bool _isVulkan;
+
+        public NativeWindow(NativeWindowSettings nativeWindowSettings) : base(nativeWindowSettings)
+        {
+            _isVulkan = true;
+        }
+
+        internal unsafe void Start(string gamePath)
+        {
+            if (!_isVulkan)
+            {
+                MakeCurrent();
+            }
+
+            var getProcAddress = Marshal.GetFunctionPointerForDelegate<GetProcAddress>(x => GLFW.GetProcAddress(x));
+            var createSurface = Marshal.GetFunctionPointerForDelegate<CreateSurface>( x =>
+            {
+                VkHandle surface;
+                GLFW.CreateWindowSurface(new VkHandle(x) ,this.WindowPtr, null, out surface);
+
+                return surface.Handle;
+            });
+            var vkExtensions = GLFW.GetRequiredInstanceExtensions();
+
+
+            var pointers = new IntPtr[vkExtensions.Length];
+            for (int i = 0; i < vkExtensions.Length; i++)
+            {
+                pointers[i] = Marshal.StringToHGlobalAnsi(vkExtensions[i]);
+            }
+
+            fixed (IntPtr* ptr = pointers)
+            {
+                var nativeGraphicsInterop = new NativeGraphicsInterop()
+                {
+                    GlGetProcAddress = getProcAddress,
+                    VkRequiredExtensions = (nint)ptr,
+                    VkRequiredExtensionsCount = pointers.Length,
+                    VkCreateSurface = createSurface
+                };
+                var success = LibRyujinxInterop.InitializeGraphicsRenderer(_isVulkan ? GraphicsBackend.Vulkan : GraphicsBackend.OpenGl, nativeGraphicsInterop);
+                success = LibRyujinxInterop.InitializeDevice();
+
+                var path = Marshal.StringToHGlobalAnsi(gamePath);
+                var loaded = LibRyujinxInterop.LoadApplication(path);
+                LibRyujinxInterop.SetRendererSize(Size.X, Size.Y);
+                Marshal.FreeHGlobal(path);
+            }
+
+            if (!_isVulkan)
+            {
+                Context.MakeNoneCurrent();
+            }
+
+            var thread = new Thread(new ThreadStart(RunLoop));
+            thread.Start();
+            thread.Join();
+
+            foreach(var ptr in pointers)
+            {
+                Marshal.FreeHGlobal(ptr);
+            }
+        }
+
+        public void RunLoop()
+        {
+            del = Marshal.GetFunctionPointerForDelegate<SwapBuffersCallback>(SwapBuffers);
+            LibRyujinxInterop.SetSwapBuffersCallback(del);
+
+            if (!_isVulkan)
+            {
+                MakeCurrent();
+
+                Context.SwapInterval = 0;
+            }
+
+            Task.Run(async () =>
+            {
+                await Task.Delay(1000);
+
+                LibRyujinxInterop.SetVsyncState(false);
+            });
+
+            LibRyujinxInterop.RunLoop();
+
+            if (!_isVulkan)
+            {
+                Context.MakeNoneCurrent();
+            }
+        }
+
+        private void SwapBuffers()
+        {
+            if (!_isVulkan)
+            {
+                this.Context.SwapBuffers();
+            }
+        }
+    }
+}

src/LibRyujinx.NativeSample/Program.cs

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+using LibRyujinx.Sample;
+using OpenTK.Mathematics;
+using OpenTK.Windowing.Common;
+using OpenTK.Windowing.Desktop;
+
+namespace LibRyujinx.NativeSample
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            if (args.Length > 0)
+            {
+                var success = LibRyujinxInterop.Initialize(IntPtr.Zero);
+                success = LibRyujinxInterop.InitializeGraphics(new GraphicsConfiguration());
+                var nativeWindowSettings = new NativeWindowSettings()
+                {
+                    Size = new Vector2i(800, 600),
+                    Title = "Ryujinx",
+                    API = ContextAPI.NoAPI,
+                    IsEventDriven = true,
+                    // This is needed to run on macos
+                    Flags = ContextFlags.ForwardCompatible,
+                };
+
+                using var window = new NativeWindow(nativeWindowSettings);
+
+                window.IsVisible = true;
+                window.Start(args[0]);
+            }
+        }
+    }
+}