Vulkan bindings (#1)

* Initial Vulkan support

OpenTK.sln

@@ -11,10 +11,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Generator.Rewrite", "src\Ge
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK", "src\OpenTK\OpenTK.csproj", "{A37A7E14-0000-0000-0000-000000000000}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK.Android", "src\OpenTK\OpenTK.Android.csproj", "{1648ACE1-E7D0-41CB-9A0E-C2A9D76C13A9}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK.iOS", "src\OpenTK\OpenTK.iOS.csproj", "{88368190-E3DF-4EBE-ACAA-7B1779F376CA}"
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK.GLControl", "src\OpenTK.GLControl\OpenTK.GLControl.csproj", "{A625BE88-0000-0000-0000-000000000000}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenTK.GLWidget", "src\OpenTK.GLWidget\OpenTK.GLWidget.csproj", "{A625BE87-0000-0000-0000-000000000000}"
@@ -45,6 +41,10 @@ Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "OpenTK.Tests.Generators", "
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OpenTK.Standard", "src\OpenTK\OpenTK.Standard.csproj", "{67F02FD3-8F7F-4D89-8551-359993271CA3}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "vk.generator", "src\vk.generator\vk.generator.csproj", "{3766DF33-E28B-402D-9EE1-975C2AFB5EAF}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "vk.rewrite", "src\vk.rewrite\vk.rewrite.csproj", "{3E9B1C4D-BCB4-418A-A94E-DD164A19C6A2}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -67,14 +67,6 @@ Global
 		{A37A7E14-0000-0000-0000-000000000000}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A37A7E14-0000-0000-0000-000000000000}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A37A7E14-0000-0000-0000-000000000000}.Release|Any CPU.Build.0 = Release|Any CPU
-		{1648ACE1-E7D0-41CB-9A0E-C2A9D76C13A9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{1648ACE1-E7D0-41CB-9A0E-C2A9D76C13A9}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{1648ACE1-E7D0-41CB-9A0E-C2A9D76C13A9}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{1648ACE1-E7D0-41CB-9A0E-C2A9D76C13A9}.Release|Any CPU.Build.0 = Release|Any CPU
-		{88368190-E3DF-4EBE-ACAA-7B1779F376CA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{88368190-E3DF-4EBE-ACAA-7B1779F376CA}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{88368190-E3DF-4EBE-ACAA-7B1779F376CA}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{88368190-E3DF-4EBE-ACAA-7B1779F376CA}.Release|Any CPU.Build.0 = Release|Any CPU
 		{A625BE88-0000-0000-0000-000000000000}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{A625BE88-0000-0000-0000-000000000000}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A625BE88-0000-0000-0000-000000000000}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -103,6 +95,14 @@ Global
 		{67F02FD3-8F7F-4D89-8551-359993271CA3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{67F02FD3-8F7F-4D89-8551-359993271CA3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{67F02FD3-8F7F-4D89-8551-359993271CA3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3766DF33-E28B-402D-9EE1-975C2AFB5EAF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3766DF33-E28B-402D-9EE1-975C2AFB5EAF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3766DF33-E28B-402D-9EE1-975C2AFB5EAF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3766DF33-E28B-402D-9EE1-975C2AFB5EAF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3E9B1C4D-BCB4-418A-A94E-DD164A19C6A2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3E9B1C4D-BCB4-418A-A94E-DD164A19C6A2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3E9B1C4D-BCB4-418A-A94E-DD164A19C6A2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3E9B1C4D-BCB4-418A-A94E-DD164A19C6A2}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

README.md

@@ -1,6 +1,8 @@
 OpenTK
 ======
 
+This fork contains modified dependencies from mellinoe's Vulkan bindings, you can get the original from [here](https://github.com/mellinoe/vk).
+
 
 ### MAINTAINERS WANTED
 

src/OpenTK/Configuration.cs

@@ -164,9 +164,9 @@ namespace OpenTK
             return t != null;
         }
 
-        #if SDL2
         private static bool DetectSdl2()
         {
+#if SDL2
             bool supported = false;
 
             // Detect whether SDL2 is supported
@@ -220,8 +220,10 @@ namespace OpenTK
             }
 
             return supported;
-        }
-        #endif
+#else
+            return false;
+#endif
+    }
 
         private static void DetectUnix(out bool unix, out bool linux, out bool macos)
         {
@@ -298,7 +300,7 @@ namespace OpenTK
 
                     initialized = true;
 #endif
-                    Debug.Print("Detected configuration: {0} / {1}",
+                        Debug.Print("Detected configuration: {0} / {1}",
                         RunningOnWindows ? "Windows" : RunningOnLinux ? "Linux" : RunningOnMacOS ? "MacOS" :
                         runningOnUnix ? "Unix" : RunningOnX11 ? "X11" : "Unknown Platform",
                         RunningOnMono ? "Mono" : ".Net");

src/OpenTK/Graphics/Vulkan/.gitignore

@@ -0,0 +1 @@
+Generated/

src/OpenTK/Graphics/Vulkan/BindingsHelpers.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public static class BindingsHelpers
+    {
+        public static unsafe StringHandle StringToHGlobalUtf8(string s)
+        {
+            int byteCount = Encoding.UTF8.GetByteCount(s);
+            IntPtr retPtr = Marshal.AllocHGlobal(byteCount);
+            fixed (char* stringPtr = s)
+            {
+                Encoding.UTF8.GetBytes(stringPtr, s.Length, (byte*)retPtr.ToPointer(), byteCount);
+            }
+
+            return new StringHandle() { Handle = retPtr };
+        }
+
+        public static void FreeHGlobal(StringHandle ptr)
+        {
+            Marshal.FreeHGlobal(ptr.Handle);
+        }
+    }
+
+    public struct StringHandle
+    {
+        public IntPtr Handle;
+    }
+}

src/OpenTK/Graphics/Vulkan/CalliRewriteAttribute.cs

@@ -0,0 +1,8 @@
+using System;
+
+namespace OpenTK.Graphics.Vulkan.Generator
+{
+    internal class CalliRewriteAttribute : Attribute
+    {
+    }
+}

src/OpenTK/Graphics/Vulkan/Commands.cs

@@ -0,0 +1,179 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public static partial class VK
+    {
+        private static NativeLibrary s_nativeLib;
+
+        static public void LoadFunctions()
+        {
+            if (s_nativeLib == null)
+            {
+                s_nativeLib = LoadNativeLibrary();
+            }
+
+            LoadFunctionPointers();
+        }
+
+        public static IntPtr LoadFunctionPointer(string functionName)
+        {
+            if (s_nativeLib == null)
+            {
+                s_nativeLib = LoadNativeLibrary();
+            }
+
+            return s_nativeLib.LoadFunctionPointer(functionName);
+        }
+
+        private static NativeLibrary LoadNativeLibrary()
+        {
+            return NativeLibrary.Load(GetVulkanName());
+        }
+
+        private static string GetVulkanName()
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return "vulkan-1.dll";
+            }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            {
+                if (RuntimeInformation.OSDescription.Contains("Unix"))
+                {
+                    // Android
+                    return "libvulkan.so";
+                }
+                else
+                {
+                    // Desktop Linux
+                    return "libvulkan.so.1";
+                }
+            }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            {
+                return "libvulkan.dylib";
+            }
+            else
+            {
+                throw new PlatformNotSupportedException();
+            }
+        }
+
+        private static Exception CreateMissingFunctionException()
+        {
+            return new InvalidOperationException("The function does not exist or could not be loaded.");
+        }
+    }
+
+    public abstract class NativeLibrary : IDisposable
+    {
+        private readonly string _libraryName;
+        private readonly IntPtr _libraryHandle;
+
+        public IntPtr NativeHandle => _libraryHandle;
+
+        public NativeLibrary(string libraryName)
+        {
+            _libraryName = libraryName;
+            _libraryHandle = LoadLibrary(_libraryName);
+            if (_libraryHandle == IntPtr.Zero)
+            {
+                throw new InvalidOperationException("Could not load " + libraryName);
+            }
+        }
+
+        protected abstract IntPtr LoadLibrary(string libraryName);
+        protected abstract void FreeLibrary(IntPtr libraryHandle);
+        protected abstract IntPtr LoadFunction(string functionName);
+
+        public IntPtr LoadFunctionPointer(string functionName)
+        {
+            if (functionName == null)
+            {
+                throw new ArgumentNullException(nameof(functionName));
+            }
+
+            return LoadFunction(functionName);
+        }
+
+        public void Dispose()
+        {
+            FreeLibrary(_libraryHandle);
+        }
+
+
+        public static NativeLibrary Load(string libraryName)
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return new WindowsNativeLibrary(libraryName);
+            }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)
+                || RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            {
+                return new UnixNativeLibrary(libraryName);
+            }
+            else
+            {
+                throw new PlatformNotSupportedException("Cannot load native libraries on this platform: " + RuntimeInformation.OSDescription);
+            }
+        }
+
+        private class WindowsNativeLibrary : NativeLibrary
+        {
+            public WindowsNativeLibrary(string libraryName) : base(libraryName)
+            {
+            }
+
+            protected override IntPtr LoadLibrary(string libraryName)
+            {
+                return Kernel32.LoadLibrary(libraryName);
+            }
+
+            protected override void FreeLibrary(IntPtr libraryHandle)
+            {
+                Kernel32.FreeLibrary(libraryHandle);
+            }
+
+            protected override IntPtr LoadFunction(string functionName)
+            {
+                Debug.WriteLine("Loading " + functionName);
+                return Kernel32.GetProcAddress(NativeHandle, functionName);
+            }
+        }
+
+        private class UnixNativeLibrary : NativeLibrary
+        {
+            public UnixNativeLibrary(string libraryName) : base(libraryName)
+            {
+            }
+
+            protected override IntPtr LoadLibrary(string libraryName)
+            {
+                Libdl.dlerror();
+                IntPtr handle = Libdl.dlopen(libraryName, Libdl.RTLD_NOW);
+                if (handle == IntPtr.Zero && !Path.IsPathRooted(libraryName))
+                {
+                    string localPath = Path.Combine(AppContext.BaseDirectory, libraryName);
+                    handle = Libdl.dlopen(localPath, Libdl.RTLD_NOW);
+                }
+
+                return handle;
+            }
+
+            protected override void FreeLibrary(IntPtr libraryHandle)
+            {
+                Libdl.dlclose(libraryHandle);
+            }
+
+            protected override IntPtr LoadFunction(string functionName)
+            {
+                return Libdl.dlsym(NativeHandle, functionName);
+            }
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/Constants.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public static partial class VK
+    {
+        public static readonly IntPtr NullHandle = IntPtr.Zero;
+    }
+}

src/OpenTK/Graphics/Vulkan/Delegates.cs

@@ -0,0 +1,45 @@
+using System;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public unsafe delegate void* PFN_vkAllocationFunction(
+         void* pUserData,
+         UIntPtr size,
+         UIntPtr alignment,
+         VkSystemAllocationScope allocationScope);
+
+    public unsafe delegate void* PFN_vkReallocationFunction(
+         void* pUserData,
+         void* pOriginal,
+         UIntPtr size,
+         UIntPtr alignment,
+         VkSystemAllocationScope allocationScope);
+
+    public unsafe delegate void PFN_vkFreeFunction(
+         void* pUserData,
+         void* pMemory);
+
+    public unsafe delegate void PFN_vkInternalAllocationNotification(
+         void* pUserData,
+         UIntPtr size,
+         VkInternalAllocationType allocationType,
+         VkSystemAllocationScope allocationScope);
+
+    public unsafe delegate void PFN_vkInternalFreeNotification(
+         void* pUserData,
+         UIntPtr size,
+         VkInternalAllocationType allocationType,
+         VkSystemAllocationScope allocationScope);
+
+    public unsafe delegate void PFN_vkVoidFunction();
+
+    public unsafe delegate uint PFN_vkDebugReportCallbackEXT(
+        uint flags,
+        VkDebugReportObjectTypeEXT objectType,
+        ulong @object,
+        UIntPtr location,
+        int messageCode,
+        byte* pLayerPrefix,
+        byte* pMessage,
+        void* pUserData);
+}

src/OpenTK/Graphics/Vulkan/ExternalTypes.cs

@@ -0,0 +1,83 @@
+using System;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    // Windows
+
+    namespace Win32
+    {
+        public struct HINSTANCE
+        {
+            public IntPtr Handle;
+            public static implicit operator IntPtr(HINSTANCE hinst) => hinst.Handle;
+            public static implicit operator HINSTANCE(IntPtr handle) => new HINSTANCE() { Handle = handle };
+        }
+
+        public struct HWND
+        {
+            public IntPtr Handle;
+            public static implicit operator IntPtr(HWND hwnd) => hwnd.Handle;
+            public static implicit operator HWND(IntPtr handle) => new HWND() { Handle = handle };
+        }
+
+        public struct HANDLE
+        {
+            public IntPtr Handle;
+            public static implicit operator IntPtr(HANDLE handle) => handle.Handle;
+            public static implicit operator HANDLE(IntPtr handle) => new HANDLE() { Handle = handle };
+        }
+
+        public struct SECURITY_ATTRIBUTES
+        {
+            public uint nLength;
+            public IntPtr lpSecurityDescriptor;
+            public uint bInheritHandle;
+        }
+    }
+
+    // Android
+    namespace Android
+    {
+        public struct ANativeWindow { }
+    }
+
+    // Linux
+    namespace Mir
+    {
+        public struct MirConnection { }
+        public struct MirSurface { }
+    }
+
+    namespace Wayland
+    {
+        public struct wl_display { }
+        public struct wl_surface { }
+    }
+
+    namespace Xlib
+    {
+        public struct Display { }
+        public struct Window
+        {
+            public IntPtr Value;
+        }
+        public struct VisualID
+        {
+            public ulong ID;
+            public static implicit operator VisualID(ulong value) => new VisualID() { ID = value };
+            public static implicit operator ulong(VisualID id) => id.ID;
+        }
+    }
+
+    namespace Xcb
+    {
+        public struct xcb_connection_t { }
+        public struct xcb_window_t { }
+        public struct xcb_visualid_t
+        {
+            public uint ID;
+            public static implicit operator xcb_visualid_t(uint value) => new xcb_visualid_t() { ID = value };
+            public static implicit operator uint(xcb_visualid_t id) => id.ID;
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/FunctionPointer.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public struct FunctionPointer<TFunc>
+    {
+        public IntPtr Pointer;
+
+        public FunctionPointer(TFunc func)
+        {
+            Pointer = Marshal.GetFunctionPointerForDelegate(func);
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/Kernel32.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    internal static class Kernel32
+    {
+        [DllImport("kernel32")]
+        public static extern IntPtr LoadLibrary(string fileName);
+
+        [DllImport("kernel32")]
+        public static extern IntPtr GetProcAddress(IntPtr module, string procName);
+
+        [DllImport("kernel32")]
+        public static extern int FreeLibrary(IntPtr module);
+    }
+}

src/OpenTK/Graphics/Vulkan/Libdl.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    internal static class Libdl
+    {
+        [DllImport("libdl")]
+        public static extern IntPtr dlopen(string fileName, int flags);
+
+        [DllImport("libdl")]
+        public static extern IntPtr dlsym(IntPtr handle, string name);
+
+        [DllImport("libdl")]
+        public static extern int dlclose(IntPtr handle);
+
+        [DllImport("libdl")]
+        public static extern string dlerror();
+
+        public const int RTLD_NOW = 0x002;
+    }
+}

src/OpenTK/Graphics/Vulkan/VkBool32.cs

@@ -0,0 +1,68 @@
+using System;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    /// <summary>
+    /// A boolean value stored in a 4-byte unsigned integer.
+    /// </summary>
+    public struct VkBool32 : IEquatable<VkBool32>
+    {
+        /// <summary>
+        /// The raw value of the <see cref="VkBool32"/>. A value of 0 represents "false", all other values represent "true".
+        /// </summary>
+        public uint Value;
+
+        /// <summary>
+        /// Constructs a new <see cref="VkBool32"/> with the given raw value. 
+        /// </summary>
+        /// <param name="value"></param>
+        public VkBool32(uint value)
+        {
+            Value = value;
+        }
+
+        /// <summary>
+        /// Represents the boolean "true" value. Has a raw value of 1.
+        /// </summary>
+        public static readonly VkBool32 True = new VkBool32(1);
+
+        /// <summary>
+        /// Represents the boolean "true" value. Has a raw value of 0.
+        /// </summary>
+        public static readonly VkBool32 False = new VkBool32(0);
+
+        /// <summary>
+        /// Returns whether another <see cref="VkBool32"/> value is considered equal to this one.
+        /// Two <see cref="VkBool32"/>s are considered equal when their raw values are equal.
+        /// </summary>
+        /// <param name="other">The value to compare to.</param>
+        /// <returns>True if the other value's underlying raw value is equal to this instance's. False otherwise.</returns>
+        public bool Equals(VkBool32 other)
+        {
+            return Value.Equals(other.Value);
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is VkBool32 b && Equals(b);
+        }
+
+        public override int GetHashCode()
+        {
+            return Value.GetHashCode();
+        }
+
+        public override string ToString()
+        {
+            return $"{(this ? "True" : "False")} ({Value})";
+        }
+
+        public static implicit operator bool(VkBool32 b) => b.Value != 0;
+        public static implicit operator uint(VkBool32 b) => b.Value;
+        public static implicit operator VkBool32(bool b) => b ? True : False;
+        public static implicit operator VkBool32(uint value) => new VkBool32(value);
+
+        public static bool operator ==(VkBool32 left, VkBool32 right) => left.Value == right.Value;
+        public static bool operator !=(VkBool32 left, VkBool32 right) => left.Value != right.Value;
+    }
+}

src/OpenTK/Graphics/Vulkan/VkClearColorValue.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public partial struct VkClearColorValue
+    {
+        public VkClearColorValue(float r, float g, float b, float a = 1.0f) : this()
+        {
+            float32_0 = r;
+            float32_1 = g;
+            float32_2 = b;
+            float32_3 = a;
+        }
+
+        public VkClearColorValue(int r, int g, int b, int a = 255) : this()
+        {
+            int32_0 = r;
+            int32_1 = g;
+            int32_2 = b;
+            int32_3 = a;
+        }
+
+        public VkClearColorValue(uint r, uint g, uint b, uint a = 255) : this()
+        {
+            uint32_0 = r;
+            uint32_1 = g;
+            uint32_2 = b;
+            uint32_3 = a;
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/VkClearDepthStencilValue.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public unsafe partial struct VkClearDepthStencilValue
+    {
+        public VkClearDepthStencilValue(float depth, uint stencil)
+        {
+            this.depth = depth;
+            this.stencil = stencil;
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/VkExtent2D.cs

@@ -0,0 +1,107 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    /// <summary>
+    /// Structure specifying a two-dimensional extent.
+    /// </summary>
+    public unsafe partial struct VkExtent2D : IEquatable<VkExtent2D>
+    {
+        /// <summary>
+        /// An <see cref="VkExtent2D"/> with all of its components set to zero.
+        /// </summary>
+        public static readonly VkExtent2D Zero = new VkExtent2D(0, 0);
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="VkExtent2D"/> structure.
+        /// </summary>
+        /// <param name="width">The width component of the extent.</param>
+        /// <param name="height">The height component of the extent.</param>
+        public VkExtent2D(uint width, uint height)
+        {
+            this.width = width;
+            this.height = height;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="VkExtent2D"/> structure.
+        /// </summary>
+        /// <param name="width">The width component of the extent.</param>
+        /// <param name="height">The height component of the extent.</param>
+        public VkExtent2D(int width, int height)
+        {
+            this.width = (uint)width;
+            this.height = (uint)height;
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkExtent2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkExtent2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkExtent2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(ref VkExtent2D other)
+        {
+            return other.width == width && other.height == height;
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkExtent2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkExtent2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkExtent2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(VkExtent2D other)
+        {
+            return Equals(ref other);
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="object"/> is equal to this instance.
+        /// </summary>
+        /// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool Equals(object obj)
+        {
+            return obj is VkExtent2D && Equals((VkExtent2D)obj);
+        }
+
+        /// <summary>
+        /// Returns the hash code for this instance.
+        /// </summary>
+        /// <returns>The hash code.</returns>
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                int hashCode = width.GetHashCode();
+                hashCode = (hashCode * 397) ^ height.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given extents are equal.
+        /// </summary>
+        /// <param name="left">The first extent to compare.</param>
+        /// <param name="right">The second extent to compare.</param>
+        /// <returns><c>true</c> if the extents are equal; <c>false</c> otherwise.</returns>
+        public static bool operator ==(VkExtent2D left, VkExtent2D right) => left.Equals(ref right);
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given extents are not equal.
+        /// </summary>
+        /// <param name="left">The first extent to compare.</param>
+        /// <param name="right">The second extent to compare.</param>
+        /// <returns>
+        /// <c>true</c> if the extents are not equal; <c>false</c> if they are equal.
+        /// </returns>
+        public static bool operator !=(VkExtent2D left, VkExtent2D right) => !left.Equals(ref right);
+    }
+}

src/OpenTK/Graphics/Vulkan/VkImageMemoryBarrier.cs

@@ -0,0 +1,27 @@
+namespace OpenTK.Graphics.Vulkan
+{
+    public unsafe partial struct VkImageMemoryBarrier
+    {
+        public VkImageMemoryBarrier(
+            VkImage image, 
+            VkImageSubresourceRange subresourceRange,
+            VkAccessFlags srcAccessMask,
+            VkAccessFlags dstAccessMask, 
+            VkImageLayout oldLayout,
+            VkImageLayout newLayout,
+            uint srcQueueFamilyIndex = VK.QueueFamilyIgnored, 
+            uint dstQueueFamilyIndex = VK.QueueFamilyIgnored)
+        {
+            sType = VkStructureType.ImageMemoryBarrier;
+            pNext = null;
+            this.srcAccessMask = srcAccessMask;
+            this.dstAccessMask = dstAccessMask;
+            this.oldLayout = oldLayout;
+            this.newLayout = newLayout;
+            this.srcQueueFamilyIndex = srcQueueFamilyIndex;
+            this.dstQueueFamilyIndex = dstQueueFamilyIndex;
+            this.image = image;
+            this.subresourceRange = subresourceRange;
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/VkImageSubresourceRange.cs

@@ -0,0 +1,17 @@
+namespace OpenTK.Graphics.Vulkan
+{
+    public unsafe partial struct VkImageSubresourceRange
+    {
+        public VkImageSubresourceRange(
+            VkImageAspectFlags aspectMask,
+            uint baseMipLevel = 0, uint levelCount = 1,
+            uint baseArrayLayer = 0, uint layerCount = 1)
+        {
+            this.aspectMask = aspectMask;
+            this.baseMipLevel = baseMipLevel;
+            this.levelCount = levelCount;
+            this.baseArrayLayer = baseArrayLayer;
+            this.layerCount = layerCount;
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/VkOffset2D.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    /// <summary>
+    /// Structure specifying a two-dimensional offset.
+    /// </summary>
+    public unsafe partial struct VkOffset2D : IEquatable<VkOffset2D>
+    {
+        /// <summary>
+        /// An <see cref="VkOffset2D"/> with all of its components set to zero.
+        /// </summary>
+        public static readonly VkOffset2D Zero;
+
+        public VkOffset2D(int x, int y)
+        {
+            this.x = x;
+            this.y = y;
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkOffset2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkOffset2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkOffset2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(ref VkOffset2D other)
+        {
+            return other.x == x && other.y == y;
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkOffset2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkOffset2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkOffset2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(VkOffset2D other)
+        {
+            return Equals(ref other);
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="object"/> is equal to this instance.
+        /// </summary>
+        /// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool Equals(object obj)
+        {
+            return obj is VkOffset2D && Equals((VkOffset2D)obj);
+        }
+
+        /// <summary>
+        /// Returns the hash code for this instance.
+        /// </summary>
+        /// <returns>The hash code.</returns>
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                int hashCode = x;
+                hashCode = (hashCode * 397) ^ y;
+                return hashCode;
+            }
+        }
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given offsets are equal.
+        /// </summary>
+        /// <param name="left">The first offset to compare.</param>
+        /// <param name="right">The second offset to compare.</param>
+        /// <returns><c>true</c> if the offsets are equal; <c>false</c> otherwise.</returns>
+        public static bool operator ==(VkOffset2D left, VkOffset2D right) => left.Equals(ref right);
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given offsets are not equal.
+        /// </summary>
+        /// <param name="left">The first offset to compare.</param>
+        /// <param name="right">The second offset to compare.</param>
+        /// <returns>
+        /// <c>true</c> if the offsets are not equal; <c>false</c> if they are equal.
+        /// </returns>
+        public static bool operator !=(VkOffset2D left, VkOffset2D right) => !left.Equals(ref right);
+    }
+}

src/OpenTK/Graphics/Vulkan/VkRect2D.cs

@@ -0,0 +1,143 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    /// <summary>
+    /// Structure specifying a two-dimensional subregion.
+    /// </summary>
+    public unsafe partial struct VkRect2D : IEquatable<VkRect2D>
+    {
+        /// <summary>
+        /// An <see cref="VkRect2D"/> with all of its components set to zero.
+        /// </summary>
+        public static readonly VkRect2D Zero = new VkRect2D(VkOffset2D.Zero, VkExtent2D.Zero);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="VkRect2D"/> structure.
+        /// </summary>
+        /// <param name="offset">The offset component of the rectangle.</param>
+        /// <param name="extent">The extent component of the rectangle.</param>
+        public VkRect2D(VkOffset2D offset, VkExtent2D extent)
+        {
+            this.offset = offset;
+            this.extent = extent;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="VkRect2D"/> structure.
+        /// </summary>
+        /// <param name="extent">The extent component of the rectangle.</param>
+        public VkRect2D(VkExtent2D extent)
+        {
+            this.offset = default(VkOffset2D);
+            this.extent = extent;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rect2D"/> structure.
+        /// </summary>
+        /// <param name="x">The X component of the offset.</param>
+        /// <param name="y">The Y component of the offset.</param>
+        /// <param name="width">The width component of the extent.</param>
+        /// <param name="height">The height component of the extent.</param>
+        public VkRect2D(int x, int y, uint width, uint height)
+        {
+            this.offset = new VkOffset2D(x, y);
+            this.extent = new VkExtent2D(width, height);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rect2D"/> structure.
+        /// </summary>
+        /// <param name="x">The X component of the offset.</param>
+        /// <param name="y">The Y component of the offset.</param>
+        /// <param name="width">The width component of the extent.</param>
+        /// <param name="height">The height component of the extent.</param>
+        public VkRect2D(int x, int y, int width, int height)
+        {
+            this.offset = new VkOffset2D(x, y);
+            this.extent = new VkExtent2D(width, height);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rect2D"/> structure.
+        /// </summary>
+        /// <param name="width">The width component of the extent.</param>
+        /// <param name="height">The height component of the extent.</param>
+        public VkRect2D(uint width, uint height)
+        {
+            this.offset = default(VkOffset2D);
+            this.extent = new VkExtent2D(width, height);
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkRect2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkRect2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkOffset2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(ref VkRect2D other)
+        {
+            return other.offset.Equals(ref offset) && other.extent.Equals(ref extent);
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="VkRect2D"/> is equal to this instance.
+        /// </summary>
+        /// <param name="other">The <see cref="VkRect2D"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="VkRect2D"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public bool Equals(VkRect2D other)
+        {
+            return Equals(ref other);
+        }
+
+        /// <summary>
+        /// Determines whether the specified <see cref="object"/> is equal to this instance.
+        /// </summary>
+        /// <param name="obj">The <see cref="object"/> to compare with this instance.</param>
+        /// <returns>
+        /// <c>true</c> if the specified <see cref="object"/> is equal to this instance; otherwise, <c>false</c>.
+        /// </returns>
+        public override bool Equals(object obj)
+        {
+            return obj is VkRect2D && Equals((VkRect2D)obj);
+        }
+
+        /// <summary>
+        /// Returns the hash code for this instance.
+        /// </summary>
+        /// <returns>The hash code.</returns>
+        public override int GetHashCode()
+        {
+            unchecked
+            {
+                int hashCode = extent.GetHashCode();
+                hashCode = (hashCode * 397) ^ offset.GetHashCode();
+                return hashCode;
+            }
+        }
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given rectangles are equal.
+        /// </summary>
+        /// <param name="left">The first rectangle to compare.</param>
+        /// <param name="right">The second rectangle to compare.</param>
+        /// <returns><c>true</c> if the rectangles are equal; <c>false</c> otherwise.</returns>
+        public static bool operator ==(VkRect2D left, VkRect2D right) => left.Equals(right);
+
+        /// <summary>
+        /// Returns a boolean indicating whether the two given rectangles are not equal.
+        /// </summary>
+        /// <param name="left">The first rectangle to compare.</param>
+        /// <param name="right">The second rectangle to compare.</param>
+        /// <returns>
+        /// <c>true</c> if the rectangles are not equal; <c>false</c> if they are equal.
+        /// </returns>
+        public static bool operator !=(VkRect2D left, VkRect2D right) => !left.Equals(right);
+    }
+}

src/OpenTK/Graphics/Vulkan/VulkanList.cs

@@ -0,0 +1,552 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+#if !VALIDATE
+using System.Diagnostics;
+#endif
+
+namespace OpenTK.Graphics.Vulkan
+{
+    using Debug = System.Diagnostics.Debug;
+
+    public unsafe class VulkanList<T> : IEnumerable<T>, IDisposable where T : struct
+    {
+        private byte* _dataPtr;
+        private uint _elementCapacity;
+        private uint _count;
+
+        public const int DefaultCapacity = 4;
+        private const float GrowthFactor = 2f;
+        private static readonly uint s_elementByteSize = InitializeTypeSize();
+
+        public VulkanList() : this(DefaultCapacity) { }
+        public VulkanList(uint capacity)
+        {
+            Allocate(capacity);
+        }
+
+        public VulkanList(uint capacity, uint count)
+        {
+            Allocate(capacity);
+            Count = count;
+        }
+
+        public VulkanList(VulkanList<T> existingList)
+        {
+            Allocate(existingList._elementCapacity);
+            Unsafe.CopyBlock(_dataPtr, existingList._dataPtr, existingList._count * s_elementByteSize);
+        }
+
+        public static VulkanList<T> New(uint count)
+        {
+            return new VulkanList<T>(count, count);
+        }
+
+        public IntPtr Data
+        {
+            get
+            {
+                ThrowIfDisposed();
+                return new IntPtr(_dataPtr);
+            }
+        }
+
+        public uint Count
+        {
+            get
+            {
+                ThrowIfDisposed();
+                return _count;
+            }
+            set
+            {
+                ThrowIfDisposed();
+                if (value > _elementCapacity)
+                {
+                    uint newLements = value - Count;
+                    CoreResize(value);
+                    Unsafe.InitBlock(_dataPtr + _count * s_elementByteSize, 0, newLements * s_elementByteSize);
+                }
+
+                _count = value;
+            }
+        }
+
+        public ref T this[uint index]
+        {
+            get
+            {
+                ThrowIfDisposed();
+#if VALIDATE
+                if (index >= _count)
+                {
+                    throw new ArgumentOutOfRangeException(nameof(index));
+                }
+#else
+                Debug.Assert(index < _count);
+#endif
+                return ref Unsafe.AsRef<T>(_dataPtr + index * s_elementByteSize);
+            }
+        }
+
+        public ref T this[int index]
+        {
+            get
+            {
+                ThrowIfDisposed();
+#if VALIDATE
+                if (index < 0 || index >= _count)
+                {
+                    throw new ArgumentOutOfRangeException(nameof(index));
+                }
+#else
+                Debug.Assert(index >= 0 && index < _count);
+#endif
+                return ref Unsafe.AsRef<T>(_dataPtr + index * s_elementByteSize);
+            }
+        }
+
+        public ReadOnlyNativeListView<T> GetReadOnlyView()
+        {
+            ThrowIfDisposed();
+            return new ReadOnlyNativeListView<T>(this, 0, _count);
+        }
+
+        public ReadOnlyNativeListView<T> GetReadOnlyView(uint start, uint count)
+        {
+            ThrowIfDisposed();
+#if VALIDATE
+            if (start + count > _count)
+            {
+                throw new ArgumentOutOfRangeException();
+            }
+#else
+            Debug.Assert(start + count <= _count);
+#endif
+            return new ReadOnlyNativeListView<T>(this, start, count);
+        }
+
+        public View<ViewType> GetView<ViewType>() where ViewType : struct
+        {
+            ThrowIfDisposed();
+            return new View<ViewType>(this);
+        }
+
+        public bool IsDisposed => _dataPtr == null;
+
+        public void Add(ref T item)
+        {
+            ThrowIfDisposed();
+            if (_count == _elementCapacity)
+            {
+                CoreResize((uint)(_elementCapacity * GrowthFactor));
+            }
+
+            Unsafe.Copy(_dataPtr + _count * s_elementByteSize, ref item);
+            _count += 1;
+        }
+
+        public void Add(T item)
+        {
+            ThrowIfDisposed();
+            if (_count == _elementCapacity)
+            {
+                CoreResize((uint)(_elementCapacity * GrowthFactor));
+            }
+
+            Unsafe.Write(_dataPtr + _count * s_elementByteSize, item);
+            _count += 1;
+        }
+
+        public void Add(void* data, uint numElements)
+        {
+            ThrowIfDisposed();
+            uint needed = _count + numElements;
+            if (numElements > _elementCapacity)
+            {
+                CoreResize((uint)(needed * GrowthFactor));
+            }
+
+            Unsafe.CopyBlock(_dataPtr + _count * s_elementByteSize, data, numElements * s_elementByteSize);
+            _count += numElements;
+        }
+
+        public bool Remove(ref T item)
+        {
+            ThrowIfDisposed();
+            bool result = IndexOf(ref item, out uint index);
+            if (result)
+            {
+                CoreRemoveAt(index);
+            }
+
+            return result;
+        }
+
+        public bool Remove(T item) => Remove(ref item);
+
+        public void RemoveAt(uint index)
+        {
+            ThrowIfDisposed();
+#if VALIDATE
+            if (index >= _count)
+            {
+                throw new ArgumentOutOfRangeException(nameof(index));
+            }
+#else
+            Debug.Assert(index < _count);
+#endif
+            CoreRemoveAt(index);
+        }
+
+        public void Clear()
+        {
+            ThrowIfDisposed();
+            _count = 0;
+        }
+
+        public bool IndexOf(ref T item, out uint index)
+        {
+            ThrowIfDisposed();
+            byte* itemPtr = (byte*)Unsafe.AsPointer(ref item);
+            for (index = 0; index < _count; index++)
+            {
+                byte* ptr = _dataPtr + index * s_elementByteSize;
+                if (Equals(ptr, itemPtr, s_elementByteSize))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        public bool IndexOf(T item, out uint index)
+        {
+            ThrowIfDisposed();
+            byte* itemPtr = (byte*)Unsafe.AsPointer(ref item);
+            for (index = 0; index < _count; index++)
+            {
+                byte* ptr = _dataPtr + index * s_elementByteSize;
+                if (Equals(ptr, itemPtr, s_elementByteSize))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        public IntPtr GetAddress(uint index)
+        {
+            ThrowIfDisposed();
+#if VALIDATE
+            if (index >= _count)
+            {
+                throw new ArgumentOutOfRangeException(nameof(index));
+            }
+
+#else
+            Debug.Assert(index < _count);
+#endif
+            return new IntPtr(_dataPtr + (index * s_elementByteSize));
+        }
+
+        public void Resize(uint elementCount)
+        {
+            ThrowIfDisposed();
+            CoreResize(elementCount);
+            if (_elementCapacity < _count)
+            {
+                _count = _elementCapacity;
+            }
+        }
+
+        private static uint InitializeTypeSize()
+        {
+#if VALIDATE
+            // TODO: DHetermine if the structure type contains references and throw if it does.
+            // https://github.com/dotnet/corefx/issues/14047
+#endif
+            return (uint)Unsafe.SizeOf<T>();
+        }
+
+        private void CoreResize(uint elementCount)
+        {
+            _dataPtr = (byte*)Marshal.ReAllocHGlobal(new IntPtr(_dataPtr), (IntPtr)(elementCount * s_elementByteSize));
+            _elementCapacity = elementCount;
+        }
+
+        private void Allocate(uint elementCount)
+        {
+            _dataPtr = (byte*)Marshal.AllocHGlobal((int)(elementCount * s_elementByteSize));
+            _elementCapacity = elementCount;
+        }
+
+        private bool Equals(byte* ptr, byte* itemPtr, uint s_elementByteSize)
+        {
+            for (int i = 0; i < s_elementByteSize; i++)
+            {
+                if (ptr[i] != itemPtr[i])
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        private void CoreRemoveAt(uint index)
+        {
+            Unsafe.CopyBlock(_dataPtr + index * s_elementByteSize, _dataPtr + (_count - 1) * s_elementByteSize, s_elementByteSize);
+            _count -= 1;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+#if !VALIDATE
+        [Conditional("DEBUG")]
+#endif
+        private void ThrowIfDisposed()
+        {
+#if VALIDATE
+            if (_dataPtr == null)
+            {
+                throw new ObjectDisposedException(nameof(Data));
+            }
+#else
+            Debug.Assert(_dataPtr != null, "NativeList is disposed.");
+#endif
+        }
+
+        public void Dispose()
+        {
+            ThrowIfDisposed();
+            Marshal.FreeHGlobal(new IntPtr(_dataPtr));
+            _dataPtr = null;
+        }
+
+#if DEBUG
+        ~NativeList()
+        {
+            if (_dataPtr != null)
+            {
+                Debug.WriteLine($"A NativeList<{typeof(T).Name}> was not properly disposed.");
+                Dispose();
+            }
+        }
+#endif
+
+        public Enumerator GetEnumerator()
+        {
+            ThrowIfDisposed();
+            return new Enumerator(_dataPtr, _count);
+        }
+
+        IEnumerator<T> IEnumerable<T>.GetEnumerator() => GetEnumerator();
+
+        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+
+        public struct Enumerator : IEnumerator<T>
+        {
+            private byte* _basePtr;
+            private uint _count;
+            private uint _currentIndex;
+            private T _current;
+
+            public Enumerator(byte* basePtr, uint count)
+            {
+                _basePtr = basePtr;
+                _count = count;
+                _currentIndex = 0;
+                _current = default(T);
+            }
+
+            public T Current => _current;
+            object IEnumerator.Current => Current;
+
+            public bool MoveNext()
+            {
+                if (_currentIndex != _count)
+                {
+                    _current = Unsafe.Read<T>(_basePtr + _currentIndex * s_elementByteSize);
+                    _currentIndex += 1;
+                    return true;
+                }
+
+                return false;
+            }
+
+            public void Reset()
+            {
+                _current = default(T);
+                _currentIndex = 0;
+            }
+
+            public void Dispose() { }
+        }
+
+        public struct View<ViewType> : IEnumerable<ViewType> where ViewType : struct
+        {
+            private static readonly uint s_elementByteSize = (uint)Unsafe.SizeOf<ViewType>();
+            private readonly VulkanList<T> _parent;
+
+            public View(VulkanList<T> parent)
+            {
+                _parent = parent;
+            }
+
+            public uint Count => (_parent.Count * VulkanList<T>.s_elementByteSize) / s_elementByteSize;
+
+            public ViewType this[uint index]
+            {
+                get
+                {
+#if VALIDATE
+                    if (index >= Count)
+                    {
+                        throw new ArgumentOutOfRangeException(nameof(index));
+                    }
+#else
+                    Debug.Assert(index < Count);
+#endif
+                    return Unsafe.Read<ViewType>(_parent._dataPtr + index * s_elementByteSize);
+                }
+            }
+
+            public Enumerator GetEnumerator() => new Enumerator(this);
+
+            IEnumerator<ViewType> IEnumerable<ViewType>.GetEnumerator() => GetEnumerator();
+
+            IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+
+            public struct Enumerator : IEnumerator<ViewType>
+            {
+                private View<ViewType> _view;
+                private uint _currentIndex;
+                private ViewType _current;
+
+                public Enumerator(View<ViewType> view)
+                {
+                    _view = view;
+                    _currentIndex = 0;
+                    _current = default(ViewType);
+                }
+
+                public ViewType Current => _view[_currentIndex];
+                object IEnumerator.Current => Current;
+
+                public bool MoveNext()
+                {
+                    if (_currentIndex != _view.Count)
+                    {
+                        _current = _view[_currentIndex];
+                        _currentIndex += 1;
+                        return true;
+                    }
+
+                    return false;
+                }
+
+                public void Reset()
+                {
+                    _currentIndex = 0;
+                    _current = default(ViewType);
+                }
+
+                public void Dispose() { }
+            }
+        }
+    }
+
+    public struct ReadOnlyNativeListView<T> : IEnumerable<T> where T : struct
+    {
+        private readonly VulkanList<T> _list;
+        private readonly uint _start;
+        public readonly uint Count;
+
+        public ReadOnlyNativeListView(VulkanList<T> list, uint start, uint count)
+        {
+            _list = list;
+            _start = start;
+            Count = count;
+        }
+
+        public T this[uint index]
+        {
+            get
+            {
+#if VALIDATE
+                if (index >= Count)
+                {
+                    throw new ArgumentOutOfRangeException(nameof(index));
+                }
+#else
+                Debug.Assert(index < Count);
+#endif
+                return _list[index + _start];
+            }
+        }
+
+        public T this[int index]
+        {
+            get
+            {
+#if VALIDATE
+                if (index < 0 || index >= Count)
+                {
+                    throw new ArgumentOutOfRangeException(nameof(index));
+                }
+#else
+                Debug.Assert(index >= 0 && index < Count);
+#endif
+                return _list[(uint)index + _start];
+            }
+        }
+
+        public Enumerator GetEnumerator() => new Enumerator(this);
+
+        IEnumerator<T> IEnumerable<T>.GetEnumerator() => GetEnumerator();
+
+        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+
+        public struct Enumerator : IEnumerator<T>
+        {
+            private ReadOnlyNativeListView<T> _view;
+            private uint _currentIndex;
+            private T _current;
+
+            public Enumerator(ReadOnlyNativeListView<T> view)
+            {
+                _view = view;
+                _currentIndex = view._start;
+                _current = default(T);
+            }
+
+            public T Current => _view[_currentIndex];
+            object IEnumerator.Current => Current;
+
+            public bool MoveNext()
+            {
+                if (_currentIndex != _view._start + _view.Count)
+                {
+                    _current = _view[_currentIndex];
+                    _currentIndex += 1;
+                    return true;
+                }
+
+                return false;
+            }
+
+            public void Reset()
+            {
+                _currentIndex = _view._start;
+                _current = default(T);
+            }
+
+            public void Dispose() { }
+        }
+    }
+}

src/OpenTK/Graphics/Vulkan/VulkanString.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace OpenTK.Graphics.Vulkan
+{
+    public unsafe class VulkanString : IDisposable
+    {
+        private GCHandle _handle;
+        private uint _numBytes;
+
+        public byte* StringPtr => (byte*)_handle.AddrOfPinnedObject().ToPointer();
+
+        public VulkanString(string s)
+        {
+            if (s == null)
+            {
+                throw new ArgumentNullException(nameof(s));
+            }
+
+            byte[] text = Encoding.UTF8.GetBytes(s);
+            _handle = GCHandle.Alloc(text, GCHandleType.Pinned);
+            _numBytes = (uint)text.Length;
+        }
+
+        public void SetText(string s)
+        {
+            if (s == null)
+            {
+                throw new ArgumentNullException(nameof(s));
+            }
+
+            _handle.Free();
+            byte[] text = Encoding.UTF8.GetBytes(s);
+            _handle = GCHandle.Alloc(text, GCHandleType.Pinned);
+            _numBytes = (uint)text.Length;
+        }
+
+        private string GetString()
+        {
+            return Encoding.UTF8.GetString(StringPtr, (int)_numBytes);
+        }
+
+        public void Dispose()
+        {
+            _handle.Free();
+        }
+
+        public static implicit operator byte* (VulkanString utf8String) => utf8String.StringPtr;
+        public static implicit operator IntPtr (VulkanString utf8String) => new IntPtr(utf8String.StringPtr);
+        public static implicit operator VulkanString(string s) => new VulkanString(s);
+        public static implicit operator string(VulkanString utf8String) => utf8String.GetString();
+    }
+}

src/OpenTK/Graphics/Vulkan/VulkanStrings.cs

@@ -0,0 +1,14 @@
+namespace OpenTK.Graphics.Vulkan
+{
+    public static class VulkanStrings
+    {
+        public static VulkanString VK_KHR_SURFACE_EXTENSION_NAME = "VK_KHR_surface";
+        public static VulkanString VK_KHR_WIN32_SURFACE_EXTENSION_NAME = "VK_KHR_win32_surface";
+        public static VulkanString VK_KHR_XCB_SURFACE_EXTENSION_NAME = "VK_KHR_xcb_surface";
+        public static VulkanString VK_KHR_XLIB_SURFACE_EXTENSION_NAME = "VK_KHR_xlib_surface";
+        public static VulkanString VK_KHR_SWAPCHAIN_EXTENSION_NAME = "VK_KHR_swapchain";
+        public static VulkanString VK_EXT_DEBUG_REPORT_EXTENSION_NAME = "VK_EXT_debug_report";
+        public static VulkanString StandardValidationLayerName = "VK_LAYER_LUNARG_standard_validation";
+        public static VulkanString main = "main";
+    }
+}

src/OpenTK/Graphics/Vulkan/VulkanVersion.cs

@@ -0,0 +1,23 @@
+namespace OpenTK.Graphics.Vulkan
+{
+    public struct VulkanVersion
+    {
+        private readonly uint value;
+
+        public VulkanVersion(uint major, uint minor, uint patch)
+        {
+            value = major << 22 | minor << 12 | patch;
+        }
+
+        public uint Major => value >> 22;
+
+        public uint Minor => (value >> 12) & 0x3ff;
+
+        public uint Patch => (value >> 22) & 0xfff;
+
+        public static implicit operator uint(VulkanVersion version)
+        {
+            return version.value;
+        }
+    }
+}

src/OpenTK/NativeWindow.cs

@@ -29,6 +29,7 @@ using System.ComponentModel;
 using System.Drawing;
 #endif
 using OpenTK.Graphics;
+using OpenTK.Graphics.Vulkan;
 using OpenTK.Input;
 using OpenTK.Platform;
 
@@ -49,6 +50,55 @@ namespace OpenTK
         private bool events;
         private bool previous_cursor_visible = true;
 
+        public unsafe VkResult CreateVulkanSurface(VkInstance instance, out VkSurfaceKHR surface)
+        {
+            IPlatformFactory factory = Factory.Default;
+
+            if (implementation is Platform.Windows.WinGLNative win)
+            {
+                VkWin32SurfaceCreateInfoKHR createInfo = VkWin32SurfaceCreateInfoKHR.New();
+                createInfo.hwnd = win.Handle;
+                createInfo.hinstance = win.Instance;
+
+                return VK.CreateWin32SurfaceKHR(instance, ref createInfo, IntPtr.Zero, out surface);
+            }
+            else if (implementation is Platform.X11.X11GLNative x11)
+            {
+                Platform.X11.X11WindowInfo info = x11.WindowInfo as Platform.X11.X11WindowInfo;
+
+                Graphics.Vulkan.Xlib.Window window = new Graphics.Vulkan.Xlib.Window();
+                window.Value = info.WindowHandle;
+
+                VkXlibSurfaceCreateInfoKHR createInfo = VkXlibSurfaceCreateInfoKHR.New();
+                createInfo.dpy = (Graphics.Vulkan.Xlib.Display*)info.Display;
+                createInfo.window = window;
+
+                return VK.CreateXlibSurfaceKHR(instance, &createInfo, IntPtr.Zero, out surface);
+            }
+            else
+            {
+                //If someone knows how to create a MoltenVK surface, please add it here
+
+                throw new NotImplementedException(implementation.ToString());
+            }
+        }
+
+        public IntPtr[] RequiredVulkanExtensions()
+        {
+            if (implementation is Platform.Windows.WinGLNative win)
+            {
+                return new IntPtr[] { VulkanStrings.VK_KHR_WIN32_SURFACE_EXTENSION_NAME };
+            }
+            else if (implementation is Platform.X11.X11GLNative x11)
+            {
+                return new IntPtr[] { VulkanStrings.VK_KHR_XLIB_SURFACE_EXTENSION_NAME };
+            }
+            else
+            {
+                throw new NotImplementedException(implementation.ToString());
+            }
+        }
+
         /// <summary>
         /// System.Threading.Thread.CurrentThread.ManagedThreadId of the thread that created this <see cref="OpenTK.NativeWindow"/>.
         /// </summary>

src/OpenTK/OpenTK.Standard.csproj

@@ -3,7 +3,7 @@
     <AssemblyName>OpenTK</AssemblyName>
     <TargetFramework>netstandard2.0</TargetFramework>
     <RootNamespace>OpenTK</RootNamespace>
-	<DefineConstants>$(DefineConstants);WIN32;CARBON;X11;SDL2;OPENGL;OPENGLES;MINIMAL</DefineConstants>    
+	<DefineConstants>$(DefineConstants);WIN32;CARBON;X11;OPENGL;OPENGLES;MINIMAL</DefineConstants>    
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
@@ -68,22 +68,24 @@
   </ItemGroup>
   <PropertyGroup>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <Version>1.0.2</Version>
-    <Description>The Open Toolkit library (OpenTK) is an advanced, low-level C# wrapper for OpenGL, OpenGL ES and OpenAL.
+    <Version>1.0.5</Version>
+    <Description>The Open Toolkit library (OpenTK) is an advanced, low-level C# wrapper for OpenGL, OpenGL ES, OpenAL and Vulkan.
            It is suitable for games, scientific visualizations and projects that require 3d graphics, audio or compute functionality.
 
            Features
-           - Create cutting-edge graphics with OpenGL 4.4 and OpenGL ES 3.0
+           - Create cutting-edge graphics with OpenGL 4.6, OpenGL ES 3.0 and Vulkan
            - Use the .Net/Mono language of your choice: C#, F#, VB.Net, Boo, IronPython, IronRuby
-           - Develop faster with inline documentation and strongly-typed enumerations for all OpenGL and OpenAL functions
+           - Develop faster with inline documentation and strongly-typed enumerations for all OpenGL, OpenAL and Vulkan functions
 
            This is a .NET Core-compatible version of OpenTK.
-This version can be found at https://github.com/emmauss/opentk</Description>
+This version can be found at https://github.com/Ryujinx/Opentk</Description>
     <PackageId>OpenTK.NetStandard</PackageId>
     <Authors>emmaus</Authors>
     <Company>emmaus</Company>
     <Product>OpenTK</Product>
-    <PackageProjectUrl>https://github.com/emmauss/opentk</PackageProjectUrl>
+    <PackageProjectUrl>https://github.com/Ryujinx/Opentk</PackageProjectUrl>
+    <AssemblyVersion>1.0.5.0</AssemblyVersion>
+    <FileVersion>1.0.5.0</FileVersion>
   </PropertyGroup>
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">
     <Exec Command="$(OutputPath)..\..\..\..\Generator.Rewrite\bin\Debug\Rewrite.exe --assembly $(OutputPath)OpenTK.dll --signing-key ..\..\OpenTK.snk -debug -netstandard" Condition="$(OS) == 'Windows_NT' and $(Configuration) == 'Debug'" />
@@ -107,8 +109,17 @@ This version can be found at https://github.com/emmauss/opentk</Description>
   </ProjectExtensions>
   <ItemGroup>
     <PackageReference Include="System.Drawing.Common" Version="4.5.0" />
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="4.5.0" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Properties\" />
   </ItemGroup>
+  <Target Name="AutoGenerateBindings" BeforeTargets="CoreCompile">
+    <Message Text="Generating bindings." />
+    <Exec Command="dotnet run --project ..\vk.generator\vk.generator.csproj --out $(MSBuildThisFileDirectory)Graphics\Vulkan\Generated" />
+  </Target>
+  <Target Name="RewriteCalliStubs" AfterTargets="Build" Condition="'$(DisableCalli)' != 'true'">
+    <Message Text="Rewriting calli stubs." />
+    <Exec Command="dotnet run --project ..\vk.rewrite\vk.rewrite.csproj --vkdll $(TargetPath)" />
+  </Target>
 </Project>

src/OpenTK/Platform/Factory.cs

@@ -46,8 +46,9 @@ namespace OpenTK.Platform
             Toolkit.Init();
 
             // Create regular platform backend
+            if (false) { }
 #if SDL2
-            if (Configuration.RunningOnSdl2)
+            else if (Configuration.RunningOnSdl2)
             {
                 Default = new SDL2.Sdl2Factory();
             }

src/OpenTK/Platform/Windows/WinGLNative.cs

@@ -45,9 +45,9 @@ namespace OpenTK.Platform.Windows
         private const ExtendedWindowStyle ParentStyleEx = ExtendedWindowStyle.WindowEdge | ExtendedWindowStyle.ApplicationWindow;
         private const ExtendedWindowStyle ChildStyleEx = 0;
 #if NETSTANDARD
-        private readonly IntPtr Instance = Functions.GetModuleHandle(typeof(WinGLNative).Module.Name);
+        public readonly IntPtr Instance = Functions.GetModuleHandle(typeof(WinGLNative).Module.Name);
 #else
-        private readonly IntPtr Instance = Marshal.GetHINSTANCE(typeof(WinGLNative).Module);
+        public readonly IntPtr Instance = Marshal.GetHINSTANCE(typeof(WinGLNative).Module);
 #endif
         private readonly IntPtr ClassName = Marshal.StringToHGlobalAuto(Guid.NewGuid().ToString());
         private readonly WindowProcedure WindowProcedureDelegate;
@@ -96,6 +96,8 @@ namespace OpenTK.Platform.Windows
 
         private static readonly object SyncRoot = new object();
 
+        public IntPtr Handle { get => window.WindowHandle; }
+
         public WinGLNative(int x, int y, int width, int height, string title, GameWindowFlags options, DisplayDevice device)
         {
             lock (SyncRoot)

src/OpenTK/Platform/X11/Structs.cs

@@ -692,10 +692,10 @@ namespace OpenTK.Platform.X11
         public int backing_store;
         public IntPtr backing_planes;
         public IntPtr backing_pixel;
-        public bool save_under;
+        public int save_under;
         public IntPtr event_mask;
         public IntPtr do_not_propagate_mask;
-        public bool override_redirect;
+        public int override_redirect;
         public IntPtr colormap;
         public IntPtr cursor;
     }
@@ -719,7 +719,7 @@ namespace OpenTK.Platform.X11
         public IntPtr backing_pixel;
         public byte save_under;
         public IntPtr colormap;
-        public bool map_installed;
+        public int map_installed;
         public MapState map_state;
         public IntPtr all_event_masks;
         public IntPtr your_event_mask;

src/vk.generator/CodeGenerator.cs

@@ -0,0 +1,252 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace Vk.Generator
+{
+    public class CodeGenerator
+    {
+        public static void GenerateCodeFiles(VulkanSpecification spec, TypeNameMappings tnm, string path)
+        {
+            if (!Directory.Exists(path))
+            {
+
+            }
+            GenerateAllTypes(spec, tnm, path);
+        }
+
+        private static void GenerateAllTypes(VulkanSpecification spec, TypeNameMappings tnm, string path)
+        {
+            using (StreamWriter sw = File.CreateText(Path.Combine(path, "Structures.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(sw);
+                cw.WriteHeader();
+                cw.WriteLine();
+
+                cw.Using("System");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                {
+                    Util.SpaceSeparatedList(cw, spec.Structures, structure =>
+                    {
+                        StructureHelpers.WriteStructure(cw, structure, tnm, spec.Constants);
+                    });
+                }
+            }
+
+            using (StreamWriter enumWriter = File.CreateText(Path.Combine(path, "Enums.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(enumWriter);
+                cw.WriteHeader();
+                cw.WriteLine();
+
+                cw.Using("System");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                {
+                    Util.SpaceSeparatedList(cw, spec.Enums, enumDef =>
+                    {
+                        EnumHelpers.WriteEnum(cw, enumDef, tnm);
+                    });
+                }
+            }
+
+            CommandDefinition[] allVariants = spec.Commands.SelectMany(cd => VariantGenerator.GenerateVariants(cd)).ToArray();
+            CommandDefinition[] allCommandsWithVariants = spec.Commands.Concat(allVariants).OrderBy(cd => cd.Name).ToArray();
+
+            using (StreamWriter commandWriter = File.CreateText(Path.Combine(path, "Commands.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(commandWriter);
+                cw.WriteHeader();
+                cw.WriteLine();
+
+                cw.Using("System");
+                cw.Using("System.Runtime.InteropServices");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                using (cw.PushBlock("public static unsafe partial class VK"))
+                {
+                    Util.SpaceSeparatedList(cw, allCommandsWithVariants, command =>
+                    {
+                        CommandHelpers.WriteCommand(cw, tnm, command);
+                    });
+
+                    cw.WriteLine();
+
+                    using (cw.PushBlock("private static void LoadFunctionPointers()"))
+                    {
+                        foreach (CommandDefinition command in spec.Commands)
+                        {
+                            cw.WriteLine($"{command.Name}_ptr = s_nativeLib.LoadFunctionPointer(\"{command.RealName}\");");
+                        }
+                    }
+                }
+            }
+
+            using (StreamWriter handleWriter = File.CreateText(Path.Combine(path, "Handles.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(handleWriter);
+                cw.WriteHeader();
+                cw.WriteLine();
+
+                cw.Using("System");
+                cw.Using("System.Diagnostics");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                {
+                    Util.SpaceSeparatedList(cw, spec.Handles, handle =>
+                    {
+                        HandleHelpers.WriteHandle(cw, handle);
+                    });
+                }
+            }
+
+            using (StreamWriter unionWriter = File.CreateText(Path.Combine(path, "Unions.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(unionWriter);
+                cw.WriteHeader();
+                cw.WriteLine();
+
+                cw.Using("System.Runtime.InteropServices");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                {
+                    Util.SpaceSeparatedList(cw, spec.Unions, union =>
+                    {
+                        UnionHelpers.WriteUnion(cw, tnm, union);
+                    });
+                }
+            }
+
+            using (StreamWriter unionWriter = File.CreateText(Path.Combine(path, "Constants.gen.cs")))
+            {
+                CsCodeWriter cw = new CsCodeWriter(unionWriter);
+                cw.WriteHeader();
+                cw.WriteLine();
+                cw.Using("System.Runtime.InteropServices");
+                cw.WriteLine();
+
+                using (cw.PushBlock("namespace OpenTK.Graphics.Vulkan"))
+                {
+                    ConstantHelpers.WriteAllConstants(cw, tnm, spec.Constants);
+                }
+            }
+        }
+    }
+
+    public class CsCodeWriter
+    {
+        private readonly StreamWriter _sw;
+
+        private int _indentLevel = 0;
+
+        public CsCodeWriter(StreamWriter sw)
+        {
+            _sw = sw;
+        }
+
+        public void Using(string ns)
+        {
+            _sw.WriteLine($"using {ns};");
+        }
+
+        public void WriteHeader()
+        {
+            _sw.WriteLine("// This file is generated.");
+        }
+
+        public void PushBlock()
+        {
+            WriteLine('{');
+            _indentLevel += 4;
+        }
+
+        public CodeBlock PushBlock(string ns)
+        {
+            return new CodeBlock(this, ns);
+        }
+
+        public IfDefSection PushIfDef(string condition)
+        {
+            return new IfDefSection(this, condition);
+        }
+
+        public void PopBlock()
+        {
+            _indentLevel -= 4;
+            WriteLine('}');
+        }
+
+        public void WriteLine()
+        {
+            _sw.WriteLine();
+        }
+
+        public void WriteLine(string text)
+        {
+            WriteIndentation();
+            _sw.WriteLine(text);
+        }
+
+        public void WriteLine(char c)
+        {
+            WriteIndentation();
+            _sw.WriteLine(c);
+        }
+
+        public void Write(string text)
+        {
+            _sw.Write(text);
+        }
+
+        public void WriteIndentation()
+        {
+            for (int i = 0; i < _indentLevel; i++)
+            {
+                _sw.Write(' ');
+            }
+        }
+
+        public class CodeBlock : IDisposable
+        {
+            private readonly CsCodeWriter _cw;
+
+            public CodeBlock(CsCodeWriter cw, string header)
+            {
+                _cw = cw;
+                _cw.WriteLine(header);
+                _cw.PushBlock();
+            }
+
+            public void Dispose()
+            {
+                _cw.PopBlock();
+            }
+        }
+
+        public class IfDefSection : IDisposable
+        {
+            private readonly CsCodeWriter _cw;
+            private readonly string _condition;
+
+            public IfDefSection(CsCodeWriter cw, string condition)
+            {
+                _cw = cw;
+                _condition = condition;
+                _cw.WriteLine($"#if {condition}");
+            }
+
+            public void Dispose()
+            {
+                _cw.WriteLine($"#endif // {_condition}");
+            }
+        }
+    }
+}

src/vk.generator/CommandDefinition.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Linq;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class CommandDefinition
+    {
+        public string Name { get; }
+        public TypeSpec ReturnType { get; }
+        public ParameterDefinition[] Parameters { get; }
+        public string[] SuccessCodes { get; }
+        public string[] ErrorCodes { get; }
+        public bool IsVariant { get; }
+        public string RealName { get => "vk" + Name; }
+
+        public CommandDefinition(string name, TypeSpec returnType, ParameterDefinition[] parameters, string[] successCodes, string[] errorCodes, bool isVariant)
+        {
+            Require.NotNull(parameters);
+            Require.NotNull(successCodes);
+            Require.NotNull(errorCodes);
+
+            if (name.StartsWith("vk"))
+            {
+                name = name.Substring(2);
+            }
+
+            Name = name;
+            ReturnType = returnType;
+            Parameters = parameters;
+            SuccessCodes = successCodes;
+            ErrorCodes = errorCodes;
+            IsVariant = isVariant;
+        }
+
+        public static CommandDefinition CreateFromXml(XElement xe)
+        {
+            Require.Equal("command", xe.Name);
+
+            var proto = xe.Element("proto");
+            string name = proto.Element("name").Value;
+            string returnTypeName = proto.Element("type").Value;
+            TypeSpec returnType = new TypeSpec(returnTypeName);
+
+            var successAttr = xe.Attribute("successcodes");
+            string[] successCodes = successAttr != null
+                ? successAttr.Value.Split(',').ToArray()
+                : Array.Empty<string>();
+
+            var errorAttr = xe.Attribute("errorcodes");
+            string[] errorCodes = errorAttr != null
+                ? errorAttr.Value.Split(',').ToArray()
+                : Array.Empty<string>();
+
+            ParameterDefinition[] parameters = xe.Elements("param")
+                .Select(paramXml => ParameterDefinition.CreateFromXml(paramXml)).ToArray();
+
+            return new CommandDefinition(name, returnType, parameters, successCodes, errorCodes, false);
+        }
+
+        public string GetParametersSignature(TypeNameMappings tnm)
+        {
+            return string.Join(", ", Parameters.Select(pd => pd.GetMappedAndNormalizedString(tnm)));
+        }
+
+        public string GetParametersSignature()
+        {
+            return string.Join(", ", Parameters.Select(pd => pd.ToString()));
+        }
+
+        public override string ToString()
+        {
+            string paramSig = GetParametersSignature();
+            return $"{ReturnType} {Name}({paramSig})";
+        }
+    }
+}

src/vk.generator/CommandHelpers.cs

@@ -0,0 +1,27 @@
+using System.Linq;
+using System.Runtime.InteropServices;
+
+namespace Vk.Generator
+{
+    public static class CommandHelpers
+    {
+        public static void WriteCommand(CsCodeWriter cw, TypeNameMappings tnm, CommandDefinition command)
+        {
+            if (!command.IsVariant)
+            {
+                cw.WriteLine($"private static IntPtr {command.Name}_ptr;");
+            }
+
+            if (command.SuccessCodes.Length != 0)
+            {
+                cw.WriteLine($"///<remarks>Success codes:{string.Join(", ", command.SuccessCodes)}. Error codes:{string.Join(", ", command.ErrorCodes)}</remarks>");
+            }
+
+            cw.WriteLine("[Generator.CalliRewrite]");
+            using (cw.PushBlock($"public static unsafe {command.ReturnType.MapTypeSpec(tnm)} {command.Name}({command.GetParametersSignature(tnm)})"))
+            {
+                cw.WriteLine("throw new NotImplementedException();");
+            }
+        }
+    }
+}

src/vk.generator/Configuration.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace Vk.Generator
+{
+    public static class Configuration
+    {
+        public static string CodeOutputPath { get; set; } = AppContext.BaseDirectory;
+        public static bool MapBaseTypes { get; set; } = true;
+    }
+}

src/vk.generator/ConstantDefinition.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class ConstantDefinition
+    {
+        public string Name { get; }
+        public string Value { get; }
+        public ConstantType Type { get; }
+        public string Comment { get; }
+
+        public ConstantDefinition(string name, string value, string comment)
+        {
+            Name = name;
+            Value = value;
+            Type = ParseType(value);
+            Comment = comment;
+        }
+
+        private ConstantType ParseType(string value)
+        {
+            if (value.EndsWith("f"))
+            {
+                return ConstantType.Float32;
+            }
+            else if (value.EndsWith("ULL)"))
+            {
+                return ConstantType.UInt64;
+            }
+            else
+            {
+                return ConstantType.UInt32;
+            }
+        }
+
+        public static ConstantDefinition CreateFromXml(XElement xe)
+        {
+            Require.NotNull(xe);
+
+            string name = xe.GetNameAttribute();
+            string value = xe.Attribute("value").Value;
+            string comment = xe.Attribute("comment")?.Value;
+
+            return new ConstantDefinition(name, value, comment);
+        }
+
+        public enum ConstantType
+        {
+            UInt32,
+            UInt64,
+            Float32,
+        }
+    }
+}

src/vk.generator/ConstantHelpers.cs

@@ -0,0 +1,62 @@
+using System;
+
+namespace Vk.Generator
+{
+    public static class ConstantHelpers
+    {
+        public static void WriteAllConstants(CsCodeWriter cw, TypeNameMappings tnm, ConstantDefinition[] constants)
+        {
+            using (cw.PushBlock("public static partial class VK"))
+            {
+                foreach (ConstantDefinition constant in constants)
+                {
+                    if (constant.Comment != null)
+                    {
+                        cw.WriteLine($"///<summary>{constant.Comment}</summary>");
+                    }
+
+                    cw.WriteLine($"public const {GetCSharpNameForConstantType(constant.Type)} {EnumHelpers.GetPrettyEnumName(constant.Name, "VK_")} = {NormalizeValue(constant.Value)};");
+                }
+            }
+
+            cw.WriteLine();
+
+            using (cw.PushBlock("public static partial class RawConstants"))
+            {
+                foreach (ConstantDefinition constant in constants)
+                {
+                    if (constant.Comment != null)
+                    {
+                        cw.WriteLine($"///<summary>{constant.Comment}</summary>");
+                    }
+
+                    cw.WriteLine($"public const {GetCSharpNameForConstantType(constant.Type)} {constant.Name} = VK.{EnumHelpers.GetPrettyEnumName(constant.Name, "VK_")};");
+                }
+            }
+        }
+
+        public static void WriteConstant(CsCodeWriter cw, TypeNameMappings tnm, ConstantDefinition constant)
+        {
+        }
+
+        public static string GetCSharpNameForConstantType(ConstantDefinition.ConstantType type)
+        {
+            switch (type)
+            {
+                case ConstantDefinition.ConstantType.UInt32:
+                    return "uint";
+                case ConstantDefinition.ConstantType.UInt64:
+                    return "ulong";
+                case ConstantDefinition.ConstantType.Float32:
+                    return "float";
+                default:
+                    throw new InvalidOperationException("Illegal ConstantType: " + type);
+            }
+        }
+
+        private static string NormalizeValue(string value)
+        {
+            return value.Replace("ULL", "UL");
+        }
+    }
+}

src/vk.generator/EnumDefinition.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Linq;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class EnumDefinition
+    {
+        public string Name { get; }
+        public EnumType Type { get; }
+        public EnumValue[] Values { get; set;  }
+
+        public EnumDefinition(string name, EnumType type, EnumValue[] values)
+        {
+            Require.NotNullOrEmpty(name);
+            Require.NotNull(values);
+
+            Name = name;
+            Type = type;
+            Values = values;
+        }
+
+        public static EnumDefinition CreateFromXml(XElement xe)
+        {
+            Require.NotNull(xe);
+
+            EnumType type;
+            var typeAttr = xe.Attribute("type");
+            if (typeAttr != null)
+            {
+                string typeString = xe.Attribute("type").Value;
+                type = (EnumType)Enum.Parse(typeof(EnumType), typeString, true);
+            }
+            else
+            {
+                type = EnumType.Constants;
+            }
+
+            string name = xe.Attribute("name").Value;
+            EnumValue[] values = xe.Elements("enum").Select(valuesx => EnumValue.CreateFromXml(valuesx, type == EnumType.Bitmask)).ToArray();
+            return new EnumDefinition(name, type, values);
+        }
+
+        public override string ToString()
+        {
+            return $"Enum: {Name} ({Type})[{Values.Length}]";
+        }
+    }
+
+    public enum EnumType
+    {
+        Bitmask,
+        Enum,
+        Constants,
+    }
+
+    public class EnumValue
+    {
+        public string Name { get; }
+        public int ValueOrBitPosition { get; }
+        public string Comment { get; }
+
+        public EnumValue(string name, int value, string comment)
+        {
+            Name = name;
+            ValueOrBitPosition = value;
+            Comment = comment;
+        }
+
+        public static EnumValue CreateFromXml(XElement xe, bool isBitmask)
+        {
+            Require.NotNull(xe);
+
+            string name = xe.Attribute("name").Value;
+
+            int value;
+            string valueStr = xe.Attribute("value")?.Value;
+            if (valueStr != null)
+            {
+                if (valueStr.StartsWith("0x"))
+                {
+                    valueStr = valueStr.Substring(2);
+                    value = int.Parse(valueStr, System.Globalization.NumberStyles.HexNumber);
+                }
+                else
+                {
+                    value = int.Parse(valueStr);
+                }
+            }
+            else
+            {
+                string bitposStr = xe.Attribute("bitpos").Value;
+                value = 1 << int.Parse(bitposStr);
+            }
+
+            var commentAttr = xe.Attribute("comment");
+            string comment = commentAttr != null ? commentAttr.Value : string.Empty;
+            return new EnumValue(name, value, comment);
+        }
+    }
+}

src/vk.generator/EnumHelpers.cs

@@ -0,0 +1,204 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Vk.Generator
+{
+    public static class EnumHelpers
+    {
+        private static readonly char[] s_underscoreSeparator = { '_' };
+
+        private static readonly Dictionary<string, string> s_knownEnumPrefixes = new Dictionary<string, string>
+        {
+            { "VkResult", "VK" },
+        };
+
+        private static readonly Dictionary<string, string> s_knownEnumValueNames = new Dictionary<string, string>
+        {
+            {  "VK_STENCIL_FRONT_AND_BACK", "FrontAndBack" },
+            // VkStructureType
+
+            // VkSampleCountFlagBits
+            {  "VK_SAMPLE_COUNT_1_BIT", "Count1" },
+            {  "VK_SAMPLE_COUNT_2_BIT", "Count2" },
+            {  "VK_SAMPLE_COUNT_4_BIT", "Count4" },
+            {  "VK_SAMPLE_COUNT_8_BIT", "Count8" },
+            {  "VK_SAMPLE_COUNT_16_BIT", "Count16" },
+            {  "VK_SAMPLE_COUNT_32_BIT", "Count32" },
+            {  "VK_SAMPLE_COUNT_64_BIT", "Count64" },
+            // VkImageType
+            {  "VK_IMAGE_TYPE_1D", "Image1D" },
+            {  "VK_IMAGE_TYPE_2D", "Image2D" },
+            {  "VK_IMAGE_TYPE_3D", "Image3D" },
+            // VkImageViewType
+            {  "VK_IMAGE_VIEW_TYPE_1D", "Image1D" },
+            {  "VK_IMAGE_VIEW_TYPE_2D", "Image2D" },
+            {  "VK_IMAGE_VIEW_TYPE_3D", "Image3D" },
+            {  "VK_IMAGE_VIEW_TYPE_CUBE", "ImageCube" },
+            {  "VK_IMAGE_VIEW_TYPE_1D_ARRAY", "Image1DArray" },
+            {  "VK_IMAGE_VIEW_TYPE_2D_ARRAY", "Image2DArray" },
+            {  "VK_IMAGE_VIEW_TYPE_CUBE_ARRAY", "ImageCubeArray" },
+        };
+
+        private static readonly HashSet<string> s_ignoredParts = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            "flags",
+            "bit"
+        };
+
+        private static readonly HashSet<string> s_preserveCaps = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            "khr",
+            "khx",
+            "ext",
+            "nv",
+            "nvx",
+            "amd",
+        };
+
+        public static void WriteEnum(CsCodeWriter cw, EnumDefinition enumDef, TypeNameMappings tnm)
+        {
+            if (enumDef.Type == EnumType.Bitmask)
+            {
+                cw.WriteLine("[Flags]");
+            }
+            string mappedName = tnm.GetMappedName(enumDef.Name);
+            string enumNamePrefix = GetEnumNamePrefix(mappedName);
+            using (cw.PushBlock("public enum " + mappedName))
+            {
+                if (enumDef.Type == EnumType.Bitmask && !enumDef.Values.Any(ev => GetPrettyEnumName(ev.Name, enumNamePrefix) == "None"))
+                {
+                    cw.WriteLine($"None = 0,");
+                }
+                foreach (var value in enumDef.Values)
+                {
+                    if (!string.IsNullOrEmpty(value.Comment))
+                    {
+                        cw.WriteLine($"///<summary>{value.Comment}</summary>");
+                    }
+
+                    string prettyName = GetPrettyEnumName(value.Name, enumNamePrefix);
+                    cw.WriteLine($"{prettyName} = {value.ValueOrBitPosition},");
+                }
+            }
+
+            using (cw.PushBlock("public static partial class RawConstants"))
+            {
+                foreach (var value in enumDef.Values)
+                {
+                    if (!string.IsNullOrEmpty(value.Comment))
+                    {
+                        cw.WriteLine($"///<summary>{value.Comment}</summary>");
+                    }
+
+                    string prettyName = GetPrettyEnumName(value.Name, enumNamePrefix);
+                    cw.WriteLine($"public const {mappedName} {value.Name} = {mappedName}.{prettyName};");
+                }
+            }
+        }
+
+        public static string GetEnumNamePrefix(string typeName)
+        {
+            if (s_knownEnumPrefixes.TryGetValue(typeName, out string knownValue))
+            {
+                return knownValue;
+            }
+
+            List<string> parts = new List<string>(4);
+            int chunkStart = 0;
+            for (int i = 0; i < typeName.Length; i++)
+            {
+                if (char.IsUpper(typeName[i]))
+                {
+                    if (chunkStart != i)
+                    {
+                        parts.Add(typeName.Substring(chunkStart, i - chunkStart));
+                    }
+
+                    chunkStart = i;
+                    if (i == typeName.Length - 1)
+                    {
+                        parts.Add(typeName.Substring(i, 1));
+                    }
+                }
+                else if (i == typeName.Length - 1)
+                {
+                    parts.Add(typeName.Substring(chunkStart, typeName.Length - chunkStart));
+                }
+            }
+
+            for (int i = 0; i < parts.Count; i++)
+            {
+                if (
+                        parts[i] == "Flag"
+                    || parts[i] == "Flags"
+                    || (parts[i] == "K" && (i + 2) < parts.Count && parts[i + 1] == "H" && parts[i + 2] == "R")
+                    || (parts[i] == "A" && (i + 2) < parts.Count && parts[i + 1] == "M" && parts[i + 2] == "D")
+                    || (parts[i] == "E" && (i + 2) < parts.Count && parts[i + 1] == "X" && parts[i + 2] == "T")
+                    || (parts[i] == "Type" && (i + 3) < parts.Count && parts[i + 1] == "N" && parts[i + 2] == "V" && parts[i + 3] == "X")
+                    )
+                {
+                    parts = new List<string>(parts.Take(i));
+                    break;
+                }
+            }
+
+            return string.Join("_", parts.Select(s => s.ToUpper()));
+        }
+
+        public static string TrimIgnoredParts(string ret)
+        {
+            foreach (string ignored in s_ignoredParts)
+            {
+                int index;
+                if ((index = ret.IndexOf(ignored, StringComparison.OrdinalIgnoreCase)) != -1)
+                {
+                    ret = ret.Remove(index, ignored.Length);
+                }
+            }
+
+            return ret;
+        }
+
+        public static string GetPrettyEnumName(string value, string enumPrefix)
+        {
+            if (s_knownEnumValueNames.TryGetValue(value, out string knownName))
+            {
+                return knownName;
+            }
+
+            if (value.IndexOf(enumPrefix) != 0)
+            {
+                return value;
+            }
+
+            string[] parts = value.Substring(enumPrefix.Length, value.Length - enumPrefix.Length)
+                .Split(s_underscoreSeparator, StringSplitOptions.RemoveEmptyEntries);
+            StringBuilder sb = new StringBuilder();
+            foreach (string part in parts)
+            {
+                if (s_ignoredParts.Contains(part))
+                {
+                    continue;
+                }
+
+                if (s_preserveCaps.Contains(part))
+                {
+                    sb.Append(part);
+                }
+                else
+                {
+                    sb.Append(char.ToUpper(part[0]));
+                    for (int i = 1; i < part.Length; i++)
+                    {
+                        sb.Append(char.ToLower(part[i]));
+                    }
+                }
+            }
+
+            string prettyName = sb.ToString();
+            return (char.IsNumber(prettyName[0])) ? "_" + prettyName : prettyName;
+        }
+    }
+}

src/vk.generator/ExtensionDefinition.cs

@@ -0,0 +1,126 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class ExtensionDefinition
+    {
+        public string Name { get; }
+        public int Number { get; }
+        public string Type { get; }
+        public ExtensionConstant[] Constants { get; }
+        public EnumExtensionValue[] EnumExtensions { get; }
+        public string[] CommandNames { get; }
+
+        public ExtensionDefinition(
+            string name,
+            int number,
+            string type,
+            ExtensionConstant[] constants,
+            EnumExtensionValue[] enumExtensions,
+            string[] commandNames)
+        {
+            Name = name;
+            Number = number;
+            Type = type;
+            Constants = constants;
+            EnumExtensions = enumExtensions;
+            CommandNames = commandNames;
+        }
+
+        public static ExtensionDefinition CreateFromXml(XElement xe)
+        {
+            string name = xe.GetNameAttribute();
+            string numberString = xe.Attribute("number").Value;
+            int number = int.Parse(numberString);
+            string type = xe.GetTypeAttributeOrNull();
+            List<ExtensionConstant> extensionConstants = new List<ExtensionConstant>();
+            List<EnumExtensionValue> enumExtensions = new List<EnumExtensionValue>();
+            List<string> commandNames = new List<string>();
+
+            foreach (var require in xe.Elements("require"))
+            {
+                foreach (var enumXE in require.Elements("enum"))
+                {
+                    string enumName = enumXE.GetNameAttribute();
+                    string extends = enumXE.Attribute("extends")?.Value;
+                    if (extends != null)
+                    {
+                        string valueString;
+                        string offsetString = enumXE.Attribute("offset")?.Value;
+                        if (offsetString != null)
+                        {
+                            int offset = int.Parse(offsetString);
+                            int direction = 1;
+                            if (enumXE.Attribute("dir")?.Value == "-")
+                            {
+                                direction = -1;
+                            }
+
+                            int value = direction * (1000000000 + (number - 1) * 1000 + offset);
+                            valueString = value.ToString();
+                        }
+                        else
+                        {
+                            string bitPosString = enumXE.Attribute("bitpos")?.Value;
+                            if (bitPosString != null)
+                            {
+                                int shift = int.Parse(bitPosString);
+                                valueString = (1 << shift).ToString();
+                            }
+                            else
+                            {
+                                valueString = enumXE.Attribute("value").Value;
+                            }
+                        }
+                        enumExtensions.Add(new EnumExtensionValue(extends, enumName, valueString));
+                    }
+                    else
+                    {
+                        var valueAttribute = enumXE.Attribute("value");
+                        if (valueAttribute == null)
+                            continue;
+
+                        extensionConstants.Add(new ExtensionConstant(name, valueAttribute.Value));
+                    }
+                }
+                foreach (var commandXE in require.Elements("command"))
+                {
+                    commandNames.Add(commandXE.GetNameAttribute());
+                }
+            }
+            return new ExtensionDefinition(name, number, type, extensionConstants.ToArray(), enumExtensions.ToArray(), commandNames.ToArray());
+        }
+    }
+
+    public class ExtensionConstant
+    {
+        public string Name { get; }
+        public string Value { get; }
+        public ExtensionConstant(string name, string value)
+        {
+            Name = name;
+            Value = value;
+        }
+    }
+
+    [DebuggerDisplay("{DebuggerDisplayString}")]
+    public class EnumExtensionValue
+    {
+        public string ExtendedType { get; }
+        public string Name { get; }
+        public string Value { get; }
+
+        public EnumExtensionValue(string extendedType, string name, string value)
+        {
+            ExtendedType = extendedType;
+            Name = name;
+            Value = value;
+        }
+
+        private string DebuggerDisplayString =>
+            $"Ext: {ExtendedType}, {Name} = {Value}";
+    }
+}

src/vk.generator/HandleDefinition.cs

@@ -0,0 +1,28 @@
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class HandleDefinition
+    {
+        public string Name { get; }
+        public bool Dispatchable { get; }
+        public string Parent { get; }
+
+        public HandleDefinition(string name, bool dispatchable, string parent)
+        {
+            Name = name;
+            Dispatchable = dispatchable;
+            Parent = parent;
+        }
+
+        public static HandleDefinition CreateFromXml(XElement xe)
+        {
+            Require.NotNull(xe);
+            string name = xe.GetNameElement();
+            bool dispatchable = xe.GetTypeElement() == "VK_DEFINE_HANDLE";
+            string parent = xe.Attribute("parent")?.Value;
+
+            return new HandleDefinition(name, dispatchable, parent);
+        }
+    }
+}

src/vk.generator/HandleHelpers.cs

@@ -0,0 +1,39 @@
+using System;
+
+namespace Vk.Generator
+{
+    public static class HandleHelpers
+    {
+        public static void WriteHandle(CsCodeWriter cw, HandleDefinition handle)
+        {
+            if (handle.Parent != null)
+            {
+                cw.WriteIndentation();
+                cw.Write($"///<summary>");
+                cw.Write($"A {(handle.Dispatchable ? "dispatchable" : "non-dispatchable")} handle owned by a {handle.Parent}.");
+                cw.Write("</summary>");
+                cw.Write(Environment.NewLine);
+            }
+            cw.WriteLine($"[DebuggerDisplay(\"{{DebuggerDisplay,nq}}\")]");
+            using (cw.PushBlock($"public partial struct {handle.Name} : IEquatable<{handle.Name}>"))
+            {
+                string handleType = handle.Dispatchable ? "IntPtr" : "ulong";
+                string nullValue = handle.Dispatchable ? "IntPtr.Zero" : "0";
+
+                cw.WriteLine($"public readonly {handleType} Handle;");
+
+                cw.WriteLine($"public {handle.Name}({handleType} existingHandle) {{ Handle = existingHandle; }}");
+                cw.WriteLine($"public static {handle.Name} Null => new {handle.Name}({nullValue});");
+                cw.WriteLine($"public static implicit operator {handle.Name}({handleType} handle) => new {handle.Name}(handle);");
+                cw.WriteLine($"public static bool operator ==({handle.Name} left, {handle.Name} right) => left.Handle == right.Handle;");
+                cw.WriteLine($"public static bool operator !=({handle.Name} left, {handle.Name} right) => left.Handle != right.Handle;");
+                cw.WriteLine($"public static bool operator ==({handle.Name} left, {handleType} right) => left.Handle == right;");
+                cw.WriteLine($"public static bool operator !=({handle.Name} left, {handleType} right) => left.Handle != right;");
+                cw.WriteLine($"public bool Equals({handle.Name} h) => Handle.Equals(h.Handle);");
+                cw.WriteLine($"public override bool Equals(object o) => o is {handle.Name} h && Equals(h);");
+                cw.WriteLine($"public override int GetHashCode() => Handle.GetHashCode();");
+                cw.WriteLine($"private string DebuggerDisplay => string.Format(\"{handle.Name} [0x{{0}}]\", Handle.ToString(\"X\"));");
+            }
+        }
+    }
+}

src/vk.generator/MemberSpec.cs

@@ -0,0 +1,76 @@
+using System.Text.RegularExpressions;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class MemberSpec
+    {
+        public string Name { get; }
+        public TypeSpec Type { get; }
+        public bool IsOptional { get; }
+        public int ElementCount { get; }
+        public string ElementCountSymbolic { get; }
+        public string Comment { get; }
+        public string LegalValues { get; }
+
+        public MemberSpec(string name, TypeSpec type, bool isOptional, int elementCount, string elementCountSymbolic, string comment, string legalValues)
+        {
+            Name = name;
+            Type = type;
+            IsOptional = isOptional;
+            ElementCount = elementCount;
+            ElementCountSymbolic = elementCountSymbolic;
+            Comment = comment;
+            LegalValues = legalValues;
+        }
+
+        public static MemberSpec CreateFromXml(XElement xe)
+        {
+            Require.NotNull(xe);
+
+            string name = xe.GetNameElement();
+            bool isOptional = xe.GetOptionalAttributeOrFalse();
+            string typeName = xe.Element("type").Value;
+            int pointerLevel = xe.Value.Contains($"{typeName}*") ? 1 : 0; // TODO: Make this better.
+            if (xe.Value.Contains($"{typeName}* const*"))
+            {
+                pointerLevel += 1;
+            }
+
+            TypeSpec type = new TypeSpec(typeName, pointerLevel);
+
+            bool foundConstantElementCount = false;
+            int elementCount = 1;
+            string elementCountSymbolic = null;
+            for (int i = 2; i < 10; i++)
+            {
+                if (xe.Value.Contains($"{name}[{i}]"))
+                {
+                    elementCount = i;
+                    foundConstantElementCount = true;
+                    break;
+                }
+            }
+
+            if (!foundConstantElementCount)
+            {
+                Match m = Regex.Match(xe.Value, @"\[(.*)\]");
+                if (m.Captures.Count > 0)
+                {
+                    elementCountSymbolic = m.Groups[1].Value;
+                }
+            }
+
+            string value = xe.Attribute("values")?.Value;
+
+            return new MemberSpec(name, type, isOptional, elementCount, elementCountSymbolic, string.Empty, value);
+        }
+
+        public override string ToString()
+        {
+            string optionalPart = IsOptional ? "[opt] " : "";
+            string countPart = ElementCount != 1 ? $" [{ElementCount}]" : ElementCountSymbolic != null ? $" [{ElementCountSymbolic}]" : "";
+            return $"{optionalPart}{Type} {Name}";
+        }
+    }
+}

src/vk.generator/ParameterDefinition.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class ParameterDefinition
+    {
+        public string Name { get; }
+        public TypeSpec Type { get;  }
+        public ParameterModifier Modifier { get; }
+        public bool IsOptional { get; }
+
+        public ParameterDefinition(string name, TypeSpec type, ParameterModifier modifier, bool isOptional)
+        {
+            Name = name;
+            Type = type;
+            Modifier = modifier;
+            IsOptional = isOptional;
+        }
+
+        public static ParameterDefinition CreateFromXml(XElement xe)
+        {
+            string name = xe.Element("name").Value;
+            var optionalAttr = xe.Attribute("optional");
+            bool isOptional = optionalAttr != null && optionalAttr.Value == "true";
+            string typeName = xe.Element("type").Value;
+            int pointerLevel = 0;
+            if (xe.Value.Contains($"{typeName}**") || xe.Value.Contains($"{typeName}* const*"))
+            {
+                pointerLevel = 2;
+            }
+            else if(xe.Value.Contains($"{typeName}*"))
+            {
+                pointerLevel = 1;
+            }
+
+
+            TypeSpec type = new TypeSpec(typeName, pointerLevel);
+
+            return new ParameterDefinition(name, type, ParameterModifier.None, isOptional);
+        }
+
+        public string GetMappedAndNormalizedString(TypeNameMappings tnm)
+        {
+            return $"{GetModifierString()}{Type.MapTypeSpec(tnm)} {Util.NormalizeFieldName(Name)}";
+        }
+
+        public string GetModifierString()
+        {
+            if (Modifier == ParameterModifier.Ref)
+            {
+                return "ref ";
+            }
+            else if (Modifier == ParameterModifier.Out)
+            {
+                return "out ";
+            }
+            else
+            {
+                return string.Empty;
+            }
+        }
+
+        public override string ToString()
+        {
+            return $"{GetModifierString()}{Type} {Name}";
+        }
+    }
+
+    public enum ParameterModifier
+    {
+        None,
+        Ref,
+        Out
+    }
+}

src/vk.generator/Program.cs

@@ -0,0 +1,69 @@
+using System;
+using System.IO;
+using System.CommandLine;
+using System.Collections.Generic;
+
+namespace Vk.Generator
+{
+    public class Program
+    {
+        public static int Main(string[] args)
+        {
+            string outputPath = AppContext.BaseDirectory;
+
+            ArgumentSyntax.Parse(args, s =>
+            {
+                s.DefineOption("o|out", ref outputPath, "The folder into which code is generated. Defaults to the application directory.");
+            });
+
+            Configuration.CodeOutputPath = outputPath;
+
+            if (File.Exists(outputPath))
+            {
+                Console.Error.WriteLine("The given path is a file, not a folder.");
+                return 1;
+            }
+            else if (!Directory.Exists(outputPath))
+            {
+                Directory.CreateDirectory(outputPath);
+            }
+
+            using (var fs = File.OpenRead(Path.Combine(AppContext.BaseDirectory, "vk.xml")))
+            {
+                VulkanSpecification vs = VulkanSpecification.LoadFromXmlStream(fs);
+                TypeNameMappings tnm = new TypeNameMappings();
+                foreach (var typedef in vs.Typedefs)
+                {
+                    if (typedef.Requires != null)
+                    {
+                        tnm.AddMapping(typedef.Requires, typedef.Name);
+                    }
+                    else
+                    {
+                        tnm.AddMapping(typedef.Name, "uint");
+                    }
+                }
+
+                HashSet<string> definedBaseTypes = new HashSet<string>
+                {
+                    "VkBool32"
+                };
+
+                if (Configuration.MapBaseTypes)
+                {
+                    foreach (var baseType in vs.BaseTypes)
+                    {
+                        if (!definedBaseTypes.Contains(baseType.Key))
+                        {
+                            tnm.AddMapping(baseType.Key, baseType.Value);
+                        }
+                    }
+                }
+
+                CodeGenerator.GenerateCodeFiles(vs, tnm, Configuration.CodeOutputPath);
+            }
+
+            return 0;
+        }
+    }
+}

src/vk.generator/Require.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public static class Require
+    {
+        public static void NotNull<T>(T obj) where T : class
+        {
+            if (obj == null)
+            {
+                throw new InvalidOperationException("Object should not have been null.");
+            }
+        }
+
+        public static void NotNullOrEmpty(string name)
+        {
+            if (string.IsNullOrEmpty(name))
+            {
+                throw new InvalidOperationException("Value should not have been null or empty.");
+            }
+        }
+
+        internal static void Equal<T>(T expected, T actual) where T : IEquatable<T>
+        {
+            if (!expected.Equals(actual))
+            {
+                throw new InvalidOperationException($"Requirement not met. Expected: {expected}, Actual: {actual}");
+            }
+        }
+    }
+}

src/vk.generator/StructureDefinition.cs

@@ -0,0 +1,31 @@
+using System.Linq;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class StructureDefinition
+    {
+        public string Name { get; }
+        public MemberSpec[] Members { get; }
+
+        public StructureDefinition(string name, MemberSpec[] members)
+        {
+            Name = name;
+            Members = members;
+        }
+
+        public static StructureDefinition CreateFromXml(XElement xe)
+        {
+            Require.NotNull(xe);
+
+            string name = xe.GetNameAttribute();
+            MemberSpec[] members = xe.Elements("member").Select(memberx => MemberSpec.CreateFromXml(memberx)).ToArray();
+            return new StructureDefinition(name, members);
+        }
+
+        public override string ToString()
+        {
+            return $"struct {Name}[{Members.Length}]";
+        }
+    }
+}

src/vk.generator/StructureHelpers.cs

@@ -0,0 +1,111 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Vk.Generator
+{
+    public static class StructureHelpers
+    {
+        private static readonly HashSet<string> s_fixedCapableTypes = new HashSet<string>()
+        {
+            "byte", "short", "int", "long", "char", "sbyte", "ushort", "uint", "ulong", "float", "double"
+        };
+
+        public static void WriteStructure(CsCodeWriter cw, StructureDefinition structure, TypeNameMappings tnm, ConstantDefinition[] constants)
+        {
+            using (cw.PushBlock("public unsafe partial struct " + structure.Name))
+            {
+                foreach (var member in structure.Members)
+                {
+                    if (member.ElementCount > 1)
+                    {
+                        for (int i = 0; i < member.ElementCount; i++)
+                        {
+                            WriteMember(cw, tnm, member, "_" + i);
+                        }
+                    }
+                    else if (member.ElementCountSymbolic != null)
+                    {
+                        var validConstant = constants.FirstOrDefault(cd => cd.Name == member.ElementCountSymbolic);
+                        if (validConstant != null)
+                            WriteMemberSymbolicCount(cw, tnm, member, constants);
+                        else
+                            WriteMember(cw, tnm, member, string.Empty);
+                    }
+                    else
+                    {
+                        WriteMember(cw, tnm, member, string.Empty);
+                    }
+                }
+
+                if (HasAnyFieldWithSpecifiedValues(structure))
+                {
+                    // Add a helper property which fills in the structure type.
+                    using (cw.PushBlock($"public static {structure.Name} New()"))
+                    {
+                        cw.WriteLine($"{structure.Name} ret = new {structure.Name}();");
+                        foreach (var member in structure.Members.Where(ms => ms.LegalValues != null))
+                        {
+                            cw.WriteLine($"ret.{member.Name} = {member.Type}.{GetDefaultValueString(member.Type, member.LegalValues)};");
+                        }
+                        cw.WriteLine("return ret;");
+                    }
+                }
+            }
+        }
+
+        private static string GetDefaultValueString(TypeSpec type, string legalValues)
+        {
+            string prefix = EnumHelpers.GetEnumNamePrefix(type.Name);
+            string prettyName = EnumHelpers.GetPrettyEnumName(legalValues, prefix);
+            return prettyName;
+        }
+
+        private static bool HasAnyFieldWithSpecifiedValues(StructureDefinition sd)
+        {
+            return sd.Members.Any(ms => ms.LegalValues != null);
+        }
+
+        private static void WriteMember(CsCodeWriter cw, TypeNameMappings tnm, MemberSpec member, string nameSuffix)
+        {
+            if (!string.IsNullOrEmpty(member.Comment))
+            {
+                cw.WriteLine($"///<summary>{member.Comment}</summary>");
+            }
+
+            cw.WriteLine($"public {member.Type.MapTypeSpec(tnm)} {Util.NormalizeFieldName(member.Name)}{nameSuffix};");
+        }
+
+        private static void WriteMemberSymbolicCount(CsCodeWriter cw, TypeNameMappings tnm, MemberSpec member, ConstantDefinition[] constants)
+        {
+            if (!CanUseFixed(member.Type.MapTypeSpec(tnm)))
+            {
+                int count = GetSymbolValue(member.ElementCountSymbolic, constants);
+                for (int i = 0; i < count; i++)
+                {
+                    WriteMember(cw, tnm, member, "_" + i);
+                }
+            }
+            else
+            {
+                if (!string.IsNullOrEmpty(member.Comment))
+                {
+                    cw.WriteLine($"///<summary>{member.Comment}</summary>");
+                }
+
+                string mappedSymbolicName = EnumHelpers.GetPrettyEnumName(member.ElementCountSymbolic, "VK_");
+                cw.WriteLine($"public fixed {member.Type.MapTypeSpec(tnm)} {Util.NormalizeFieldName(member.Name)}[(int)VK.{mappedSymbolicName}];");
+            }
+        }
+
+        private static int GetSymbolValue(string symbolName, ConstantDefinition[] constants)
+        {
+            return int.Parse(constants.Single(cd => cd.Name == symbolName).Value);
+        }
+
+        private static bool CanUseFixed(TypeSpec type)
+        {
+            return s_fixedCapableTypes.Contains(type.Name);
+        }
+    }
+}

src/vk.generator/TypeNameMappings.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+
+namespace Vk.Generator
+{
+    public class TypeNameMappings
+    {
+        private readonly Dictionary<string, string> _nameMappings = new Dictionary<string, string>()
+        {
+            { "uint8_t", "byte" },
+            { "uint32_t", "uint" },
+            { "uint64_t", "ulong" },
+            { "int32_t", "int" },
+            { "int64_t", "long" },
+            { "int64_t*", "long*" },
+            { "char", "byte" },
+            { "size_t", "UIntPtr" },
+            { "DWORD", "uint" },
+
+            { "ANativeWindow", "Android.ANativeWindow" },
+
+            { "MirConnection", "Mir.MirConnection" },
+            { "MirSurface", "Mir.MirSurface" },
+
+            { "wl_display", "Wayland.wl_display" },
+            { "wl_surface", "Wayland.wl_surface" },
+
+            { "Display", "Xlib.Display" },
+            { "Window", "Xlib.Window" },
+            { "VisualID", "Xlib.VisualID" },
+            { "RROutput", "IntPtr" },
+
+            { "HINSTANCE", "Win32.HINSTANCE" },
+            { "HWND", "Win32.HWND" },
+            { "HANDLE", "Win32.HANDLE" },
+            { "SECURITY_ATTRIBUTES", "Win32.SECURITY_ATTRIBUTES" },
+            { "LPCWSTR", "IntPtr" },
+
+            { "xcb_connection_t", "Xcb.xcb_connection_t" },
+            { "xcb_window_t", "Xcb.xcb_window_t" },
+            { "xcb_visualid_t", "Xcb.xcb_visualid_t" },
+        };
+
+        internal IEnumerable<KeyValuePair<string, string>> GetAllMappings()
+        {
+            return _nameMappings;
+        }
+
+        public void AddMapping(string originalName, string newName)
+        {
+            _nameMappings.Add(originalName, newName);
+        }
+
+        public string GetMappedName(string name)
+        {
+            if (_nameMappings.TryGetValue(name, out string mappedName))
+            {
+                return GetMappedName(mappedName);
+            }
+            else if (name.StartsWith("PFN"))
+            {
+                return "IntPtr";
+            }
+            else
+            {
+                return name;
+            }
+        }
+    }
+}

src/vk.generator/TypeSpec.cs

@@ -0,0 +1,51 @@
+using System;
+
+namespace Vk.Generator
+{
+    public class TypeSpec
+    {
+        public string Name { get; }
+        public int PointerIndirection { get; }
+        public int ArrayDimensions { get; }
+
+        public TypeSpec(string name) : this(name, 0, 0) { }
+        public TypeSpec(string name, int pointerIndirection) : this(name, pointerIndirection, 0) { }
+        public TypeSpec(string name, int pointerIndirection, int arrayDimensions)
+        {
+            Name = name;
+            PointerIndirection = pointerIndirection;
+            ArrayDimensions = arrayDimensions;
+        }
+
+        public TypeSpec MapTypeSpec(TypeNameMappings tnm)
+        {
+            return new TypeSpec(tnm.GetMappedName(Name), PointerIndirection, ArrayDimensions);
+        }
+
+        public override string ToString()
+        {
+            return GetFullTypeName();
+        }
+
+        private string GetFullTypeName()
+        {
+            return $"{Name}{new string('*', PointerIndirection)}{GetArrayPortion()}";
+        }
+
+        private string GetArrayPortion()
+        {
+            if (ArrayDimensions == 0)
+            {
+                return string.Empty;
+            }
+            else if (ArrayDimensions == 1)
+            {
+                return "[]";
+            }
+            else
+            {
+                return $"[{new string(',', ArrayDimensions - 1)}]";
+            }
+        }
+    }
+}

src/vk.generator/TypedefDefinition.cs

@@ -0,0 +1,31 @@
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class TypedefDefinition
+    {
+        public string Name { get; }
+        public string Requires { get; }
+        public string Type { get; }
+
+        public TypedefDefinition(string name, string requires, string type)
+        {
+            Name = name;
+            Requires = requires;
+            Type = type;
+        }
+
+        public static TypedefDefinition CreateFromXml(XElement xe)
+        {
+            string name = xe.GetNameElement();
+            string requires = xe.Attribute("requires")?.Value;
+            string type = xe.GetTypeElement();
+            return new TypedefDefinition(name, requires, type);
+        }
+
+        public override string ToString()
+        {
+            return $"{Name}, {Requires} -> {Type}";
+        }
+    }
+}

src/vk.generator/UnionHelpers.cs

@@ -0,0 +1,42 @@
+using System;
+
+namespace Vk.Generator
+{
+    public class UnionHelpers
+    {
+        public static void WriteUnion(CsCodeWriter cw, TypeNameMappings tnm, StructureDefinition union)
+        {
+            cw.WriteLine("[StructLayout(LayoutKind.Explicit)]");
+            using (cw.PushBlock("public partial struct " + union.Name))
+            {
+                foreach (var member in union.Members)
+                {
+                    if (member.ElementCount > 1)
+                    {
+                        for (int i = 0; i < member.ElementCount; i++)
+                        {
+                            int fieldSize = Util.GetTypeSize(member.Type.MapTypeSpec(tnm));
+                            cw.WriteLine($"[FieldOffset({i * fieldSize})]");
+                            WriteMember(cw, tnm, member, "_" + i);
+                        }
+                    }
+                    else
+                    {
+                        cw.WriteLine("[FieldOffset(0)]");
+                        WriteMember(cw, tnm, member, string.Empty);
+                    }
+                }
+            }
+        }
+
+        private static void WriteMember(CsCodeWriter cw, TypeNameMappings tnm, MemberSpec member, string nameSuffix)
+        {
+            if (!string.IsNullOrEmpty(member.Comment))
+            {
+                cw.WriteLine($"///<summary>{member.Comment}</summary>");
+            }
+
+            cw.WriteLine($"public {member.Type.MapTypeSpec(tnm)} {Util.NormalizeFieldName(member.Name)}{nameSuffix};");
+        }
+    }
+}

src/vk.generator/Util.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+
+namespace Vk.Generator
+{
+    public static class Util
+    {
+        private static readonly Dictionary<string, int> s_typeSizes = new Dictionary<string, int>
+        {
+            { "byte", 1 },
+            { "uint", 4 },
+            { "ulong", 4 },
+            { "int", 4 },
+            { "float", 4 },
+        };
+
+        private static readonly HashSet<string> s_keywords = new HashSet<string>
+        {
+            "object",
+            "event",
+        };
+
+        public static int GetTypeSize(TypeSpec type)
+        {
+            if (type.PointerIndirection != 0 || !s_typeSizes.TryGetValue(type.Name, out int size))
+            {
+                throw new InvalidOperationException();
+            }
+
+            return size;
+        }
+
+        public static string NormalizeFieldName(string name)
+        {
+            if (s_keywords.Contains(name))
+            {
+                return "@" + name;
+            }
+
+            return name;
+        }
+        public static void SpaceSeparatedList<T>(CsCodeWriter cw, IList<T> list, Action<T> action)
+        {
+            for (int i = 0; i < list.Count; i++)
+            {
+                var item = list[i];
+                action(item);
+                if (i != list.Count - 1)
+                {
+                    cw.WriteLine();
+                }
+            }
+        }
+    }
+}

src/vk.generator/VariantGenerator.cs

@@ -0,0 +1,122 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Vk.Generator
+{
+    public static class VariantGenerator
+    {
+        public static CommandDefinition[] GenerateVariants(CommandDefinition cd)
+        {
+            ParameterDefinition[] parameters = cd.Parameters;
+            List<ParameterDefinition>[] parameterPossibilities = new List<ParameterDefinition>[parameters.Length];
+            for (int i = 0; i < parameters.Length; i++)
+            {
+                parameterPossibilities[i] = new List<ParameterDefinition>() { parameters[i] };
+                parameterPossibilities[i].AddRange(GenerateVariantParameters(cd, parameters[i]));
+            }
+
+            ParameterDefinition[][] definitions = parameterPossibilities.Select(l => l.ToArray()).ToArray();
+            var combos = GetCombinations(definitions).ToArray();
+            CommandDefinition[] commands = combos.Skip(1).Select(pd =>
+            {
+                return new CommandDefinition(cd.Name, cd.ReturnType, pd, cd.SuccessCodes, cd.ErrorCodes, true);
+            }).ToArray();
+
+            return commands;
+        }
+
+        private static IEnumerable<ParameterDefinition[]> GetCombinations(ParameterDefinition[][] pds)
+        {
+            ParameterDefinition[] first = pds.First();
+            ParameterDefinition[][] rest = GetSubArray(pds, 1);
+            foreach (var option in first)
+            {
+                if (!rest.Any())
+                {
+                    yield return new[] { option };
+                }
+                else
+                {
+                    var restVariants = GetCombinations(rest);
+                    foreach (var restVariant in restVariants)
+                    {
+                        yield return Prepend(option, restVariant);
+                    }
+                }
+            }
+        }
+
+        private static IEnumerable<ParameterDefinition> GenerateVariantParameters(CommandDefinition cd, ParameterDefinition pd)
+        {
+            if (CanHaveVariant(pd))
+            {
+                if ((cd.Name.StartsWith("Create") || cd.Name.StartsWith("Allocate") || cd.Name.StartsWith("Get")) && pd == cd.Parameters.Last())
+                {
+                    yield return OutVariant(pd);
+                }
+                else if (pd.Type.Name == "char" && pd.Type.PointerIndirection == 1)
+                {
+                    yield return StringVariant(pd);
+                }
+                else
+                {
+                    yield return RefVariant(pd);
+                    yield return IntPtrVariant(pd);
+                    if (pd.Name.EndsWith("Infos"))
+                    {
+                        yield return ArrayVariant(pd, 1);
+                    }
+                }
+            }
+        }
+
+        private static ParameterDefinition StringVariant(ParameterDefinition pd)
+        {
+            TypeSpec typeSpec = new TypeSpec("string");
+            return new ParameterDefinition(pd.Name, typeSpec, ParameterModifier.None, pd.IsOptional);
+        }
+
+        private static ParameterDefinition ArrayVariant(ParameterDefinition pd, int dimensions)
+        {
+            TypeSpec typeSpec = new TypeSpec(pd.Type.Name, pd.Type.PointerIndirection - 1, dimensions);
+            return new ParameterDefinition(pd.Name, typeSpec, ParameterModifier.None, pd.IsOptional);
+        }
+
+        private static ParameterDefinition OutVariant(ParameterDefinition pd)
+        {
+            TypeSpec typeSpec = new TypeSpec(pd.Type.Name, pd.Type.PointerIndirection - 1);
+            return new ParameterDefinition(pd.Name, typeSpec, ParameterModifier.Out, pd.IsOptional);
+        }
+
+        private static ParameterDefinition RefVariant(ParameterDefinition pd)
+        {
+            TypeSpec typeSpec = new TypeSpec(pd.Type.Name, pd.Type.PointerIndirection - 1);
+            return new ParameterDefinition(pd.Name, typeSpec, ParameterModifier.Ref, pd.IsOptional);
+        }
+
+        private static ParameterDefinition IntPtrVariant(ParameterDefinition pd)
+        {
+            TypeSpec typeSpec = new TypeSpec(nameof(IntPtr));
+            return new ParameterDefinition(pd.Name, typeSpec, ParameterModifier.None, pd.IsOptional);
+        }
+
+        private static bool CanHaveVariant(ParameterDefinition pd)
+        {
+            return pd.Type.PointerIndirection > 0 && pd.Type.Name != "void";
+        }
+
+        private static T[] GetSubArray<T>(T[] array, int skip)
+        {
+            return array.Skip(skip).ToArray();
+        }
+
+        private static T[] Prepend<T>(T first, T[] rest)
+        {
+            T[] arr = new T[rest.Length + 1];
+            rest.CopyTo(arr, 1);
+            arr[0] = first;
+            return arr;
+        }
+    }
+}

src/vk.generator/VulkanSpecification.cs

@@ -0,0 +1,126 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public class VulkanSpecification
+    {
+        public CommandDefinition[] Commands { get; }
+        public ConstantDefinition[] Constants { get; }
+        public TypedefDefinition[] Typedefs { get; }
+        public EnumDefinition[] Enums { get; }
+        public StructureDefinition[] Structures { get; }
+        public StructureDefinition[] Unions{ get; }
+        public HandleDefinition[] Handles { get; }
+        public string[] BitmaskTypes { get; }
+        public Dictionary<string, string> BaseTypes { get; }
+        public ExtensionDefinition[] Extensions { get; }
+
+        public VulkanSpecification(
+            CommandDefinition[] commands,
+            ConstantDefinition[] constants,
+            TypedefDefinition[] typedefs,
+            EnumDefinition[] enums,
+            StructureDefinition[] structures,
+            StructureDefinition[] unions,
+            HandleDefinition[] handles,
+            string[] bitmaskTypes,
+            Dictionary<string, string> baseTypes,
+            ExtensionDefinition[] extensions)
+        {
+            Commands = commands;
+            Constants = constants;
+            Typedefs = typedefs;
+            Enums = enums;
+            Structures = structures;
+            Unions = unions;
+            Handles = handles;
+            BitmaskTypes = bitmaskTypes;
+            BaseTypes = baseTypes;
+            Extensions = extensions;
+            AddExtensionEnums(Enums, Extensions);
+        }
+
+        public static VulkanSpecification LoadFromXmlStream(Stream specFileStream)
+        {
+            var spec = XDocument.Load(specFileStream);
+            var registry = spec.Element("registry");
+            var commands = registry.Element("commands");
+            CommandDefinition[] commandDefinitions = commands.Elements("command")
+                .Select(commandx => CommandDefinition.CreateFromXml(commandx)).ToArray();
+
+            ConstantDefinition[] constantDefinitions = registry.Elements("enums")
+                .Where(enumx => enumx.Attribute("name").Value == "API Constants")
+                .SelectMany(enumx => enumx.Elements("enum"))
+                .Select(enumxx => ConstantDefinition.CreateFromXml(enumxx)).ToArray();
+
+            var types = registry.Elements("types");
+            TypedefDefinition[] typedefDefinitions = types.Elements("type").Where(xe => xe.Value.Contains("typedef") && xe.HasCategoryAttribute("bitmask"))
+                .Select(xe2 => TypedefDefinition.CreateFromXml(xe2)).ToArray();
+
+            EnumDefinition[] enumDefinitions = registry.Elements("enums")
+                .Where(enumx => enumx.GetTypeAttributeOrNull() == "enum" || enumx.GetTypeAttributeOrNull() == "bitmask")
+                .Select(enumx => EnumDefinition.CreateFromXml(enumx)).ToArray();
+
+            StructureDefinition[] structures = types.Elements("type").Where(typex => typex.HasCategoryAttribute("struct"))
+                .Select(typex => StructureDefinition.CreateFromXml(typex)).ToArray();
+
+            StructureDefinition[] unions = 
+                types.Elements("type")
+                .Where(typex => typex.HasCategoryAttribute("union"))
+                .Select(typex => StructureDefinition.CreateFromXml(typex)).ToArray();
+
+            HandleDefinition[] handles = types.Elements("type").Where(typex => typex.HasCategoryAttribute("handle"))
+                .Select(typex => HandleDefinition.CreateFromXml(typex)).ToArray();
+
+            string[] bitmaskTypes = types.Elements("type").Where(typex => typex.HasCategoryAttribute("bitmask"))
+                .Select(typex => typex.GetNameElement()).ToArray();
+
+            Dictionary<string, string> baseTypes = types.Elements("type").Where(typex => typex.HasCategoryAttribute("basetype"))
+                .ToDictionary(
+                    typex => typex.GetNameElement(),
+                    typex => typex.Element("type").Value);
+
+            ExtensionDefinition[] extensions = registry.Element("extensions").Elements("extension")
+                .Select(xe => ExtensionDefinition.CreateFromXml(xe)).ToArray();
+
+            return new VulkanSpecification(
+                commandDefinitions, 
+                constantDefinitions, 
+                typedefDefinitions, 
+                enumDefinitions, 
+                structures,
+                unions, 
+                handles, 
+                bitmaskTypes, 
+                baseTypes, 
+                extensions);
+        }
+
+        private void AddExtensionEnums(EnumDefinition[] enums, ExtensionDefinition[] extensions)
+        {
+            foreach (ExtensionDefinition exDef in extensions)
+            {
+                if (exDef.Name == "VK_KHX_device_group")
+                {
+
+                }
+
+                foreach (var enumEx in exDef.EnumExtensions)
+                {
+                    EnumDefinition enumDef = GetEnumDef(enums, enumEx.ExtendedType);
+                    int value = int.Parse(enumEx.Value);
+                    enumDef.Values = enumDef.Values.Append(new EnumValue(enumEx.Name, value, null)).ToArray();
+                }
+            }
+        }
+
+        private EnumDefinition GetEnumDef(EnumDefinition[] enums, string name)
+        {
+            return enums.Single(ed => ed.Name == name);
+        }
+    }
+}

src/vk.generator/XElementExtensions.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Xml.Linq;
+
+namespace Vk.Generator
+{
+    public static class XElementExtensions
+    {
+        public static string GetNameAttribute(this XElement xe)
+        {
+            return xe.Attribute("name").Value;
+        }
+
+        public static string GetNameElement(this XElement xe)
+        {
+            return xe.Element("name").Value;
+        }
+
+        public static string GetTypeElement(this XElement xe)
+        {
+            return xe.Element("type").Value;
+        }
+
+        public static string GetTypeAttributeOrNull(this XElement xe)
+        {
+            return xe.Attribute("type")?.Value;
+        }
+
+        public static bool GetOptionalAttributeOrFalse(this XElement xe)
+        {
+            var attr = xe.Attribute("optional");
+            return attr != null
+                ? attr.Value == "true"
+                : false;
+        }
+
+        public static bool HasCategoryAttribute(this XElement xe, string value)
+        {
+            var attr = xe.Attribute("category");
+            return attr != null && attr.Value == value;
+        }
+    }
+}

src/vk.generator/vk.generator.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <OutputType>Exe</OutputType>
+    <AssemblyName>vk.generator</AssemblyName>
+    <RootNamespace>Vk.Generator</RootNamespace>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+  </PropertyGroup>
+  <ItemGroup>
+    <Content Include="vk.xml">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <SubType>Designer</SubType>
+    </Content>
+    <PackageReference Include="System.CommandLine" Version="0.1.0-e160908-1" />
+  </ItemGroup>
+</Project>

src/vk.rewrite/Program.cs

@@ -0,0 +1,201 @@
+using Mono.Cecil;
+using Mono.Cecil.Cil;
+using System;
+using System.Linq;
+using Mono.Collections.Generic;
+using System.IO;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Vk.Rewrite
+{
+    public class Program
+    {
+        private static TypeReference s_calliRewriteRef;
+        private static MethodReference s_stringToHGlobalUtf8Ref;
+        private static MethodDefinition s_freeHGlobalRef;
+        private static TypeReference s_stringHandleRef;
+
+        public static int Main(string[] args)
+        {
+            string vkDllPath = null;
+            string outputPath = null;
+            bool copiedToTemp = false;
+            var s = System.CommandLine.ArgumentSyntax.Parse(args, syntax =>
+            {
+                syntax.DefineOption("vkdll", ref vkDllPath, "The location of vk.dll to rewrite.");
+                syntax.DefineOption("out", ref outputPath, "The output location of the rewritten DLL. If not specified, the DLL is rewritten in-place.");
+            });
+
+            if (vkDllPath == null)
+            {
+                Console.WriteLine("Error: a path for --vkdll is required.");
+                Console.WriteLine(s.GetHelpText());
+                return -1;
+            }
+            if (outputPath == null)
+            {
+                outputPath = vkDllPath;
+                string copyPath = Path.GetTempFileName();
+                File.Copy(vkDllPath, copyPath, overwrite: true);
+                vkDllPath = copyPath;
+                copiedToTemp = true;
+            }
+            try
+            {
+                Rewrite(vkDllPath, outputPath);
+            }
+            finally
+            {
+                if (copiedToTemp)
+                {
+                    File.Delete(vkDllPath);
+                }
+            }
+            return 0;
+        }
+
+        private static void Rewrite(string vkDllPath, string outputPath)
+        {
+            using (AssemblyDefinition vkDll = AssemblyDefinition.ReadAssembly(vkDllPath))
+            {
+                LoadRefs(vkDll);
+                ModuleDefinition mainModule = vkDll.Modules[0];
+
+                s_stringHandleRef = mainModule.GetType("OpenTK.Graphics.Vulkan.StringHandle");
+                TypeDefinition bindingHelpers = mainModule.GetType("OpenTK.Graphics.Vulkan.BindingsHelpers");
+                s_stringToHGlobalUtf8Ref = bindingHelpers.Methods.Single(md => md.Name == "StringToHGlobalUtf8");
+                s_freeHGlobalRef = bindingHelpers.Methods.Single(md => md.Name == "FreeHGlobal");
+
+                foreach (var type in mainModule.Types)
+                {
+                    ProcessType(type);
+                }
+                vkDll.Write(outputPath);
+            }
+        }
+
+        private static void LoadRefs(AssemblyDefinition vkDll)
+        {
+            s_calliRewriteRef = vkDll.MainModule.GetType("OpenTK.Graphics.Vulkan.Generator.CalliRewriteAttribute");
+        }
+
+        private static void ProcessType(TypeDefinition type)
+        {
+            foreach (var method in type.Methods)
+            {
+                ProcessMethod(method);
+            }
+        }
+
+        private static void ProcessMethod(MethodDefinition method)
+        {
+            if (method.CustomAttributes.Any(ca => ca.AttributeType == s_calliRewriteRef))
+            {
+                var processor = method.Body.GetILProcessor();
+                RewriteMethod(method);
+                method.CustomAttributes.Remove(method.CustomAttributes.Single(ca => ca.AttributeType == s_calliRewriteRef));
+            }
+        }
+
+        private static void RewriteMethod(MethodDefinition method)
+        {
+            var il = method.Body.GetILProcessor();
+            il.Body.Instructions.Clear();
+
+            List<VariableDefinition> stringParams = new List<VariableDefinition>();
+            for (int i = 0; i < method.Parameters.Count; i++)
+            {
+                EmitLoadArgument(il, i, method.Parameters);
+                TypeReference parameterType = method.Parameters[i].ParameterType;
+                if (parameterType.FullName == "System.String")
+                {
+                    VariableDefinition variableDef = new VariableDefinition(s_stringHandleRef);
+                    method.Body.Variables.Add(variableDef);
+                    il.Emit(OpCodes.Call, s_stringToHGlobalUtf8Ref);
+                    il.Emit(OpCodes.Stloc, variableDef);
+                    il.Emit(OpCodes.Ldloc, variableDef);
+                    stringParams.Add(variableDef);
+                }
+                else if (parameterType.IsByReference)
+                {
+                    VariableDefinition byRefVariable = new VariableDefinition(new PinnedType(parameterType));
+                    method.Body.Variables.Add(byRefVariable);
+                    il.Emit(OpCodes.Stloc, byRefVariable);
+                    il.Emit(OpCodes.Ldloc, byRefVariable);
+                    il.Emit(OpCodes.Conv_I);
+                }
+            }
+
+            string functionPtrName = method.Name + "_ptr";
+            var field = method.DeclaringType.Fields.SingleOrDefault(fd => fd.Name == functionPtrName);
+            if (field == null)
+            {
+                throw new InvalidOperationException("Can't find function pointer field for " + method.Name);
+            }
+            il.Emit(OpCodes.Ldsfld, field);
+
+            CallSite callSite = new CallSite(method.ReturnType)
+            {
+                CallingConvention = MethodCallingConvention.StdCall
+            };
+            foreach (ParameterDefinition pd in method.Parameters)
+            {
+                TypeReference parameterType;
+                if (pd.ParameterType.IsByReference)
+                {
+                    parameterType = new PointerType(pd.ParameterType.GetElementType());
+                }
+                else if (pd.ParameterType.FullName == "System.String")
+                {
+                    parameterType = s_stringHandleRef;
+                }
+                else
+                {
+                    parameterType = pd.ParameterType;
+                }
+                ParameterDefinition calliPD = new ParameterDefinition(pd.Name, pd.Attributes, parameterType);
+
+                callSite.Parameters.Add(calliPD);
+            }
+            il.Emit(OpCodes.Calli, callSite);
+
+            foreach (var stringVar in stringParams)
+            {
+                il.Emit(OpCodes.Ldloc, stringVar);
+                il.Emit(OpCodes.Call, s_freeHGlobalRef);
+            }
+
+            il.Emit(OpCodes.Ret);
+
+            if (method.Body.Variables.Count > 0)
+            {
+                method.Body.InitLocals = true;
+            }
+        }
+
+        private static void EmitLoadArgument(ILProcessor il, int i, Collection<ParameterDefinition> parameters)
+        {
+            if (i == 0)
+            {
+                il.Emit(OpCodes.Ldarg_0);
+            }
+            else if (i == 1)
+            {
+                il.Emit(OpCodes.Ldarg_1);
+            }
+            else if (i == 2)
+            {
+                il.Emit(OpCodes.Ldarg_2);
+            }
+            else if (i == 3)
+            {
+                il.Emit(OpCodes.Ldarg_3);
+            }
+            else
+            {
+                il.Emit(OpCodes.Ldarg, i);
+            }
+        }
+    }
+}

src/vk.rewrite/vk.rewrite.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk" DefaultTargets="Build;Publish">
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <OutputType>Exe</OutputType>
+    <AssemblyName>vk.rewrite</AssemblyName>
+    <RootNamespace>Vk.Generator.Rewrite</RootNamespace>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="System.CommandLine" Version="0.1.0-e160908-1" />
+    <PackageReference Include="Mono.Cecil" Version="0.10.0-beta7" />
+  </ItemGroup>
+</Project>