Ava UI: Mod Manager (#4390)

* Let’s start again

* Read folders and such

* Remove Open Mod Folder menu items

* Fix folder opening, Selecting/deselecting

* She works

* Fix GTK

* AddMod

* Delete

* Fix duplicate entries

* Fix file check

* Avalonia 11

* Style fixes

* Final style fixes

* Might be too general

* Remove unnecessary using

* Enable new mods by default

* More cleanup

* Fix saving metadata

* Dont deseralise ModMetadata several times

* Avalonia I hate you

* Confirmation dialgoues

* Allow selecting multiple folders

* Add back secondary folder

* Search both paths

* Fix formatting

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Rename Title to Application

* Generic locale key

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Locale Updates

* GDK Feedback

* Fix

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>

Directory.Packages.props

@@ -13,25 +13,25 @@
     <PackageVersion Include="CommandLineParser" Version="2.9.1" />
     <PackageVersion Include="Concentus" Version="1.1.7" />
     <PackageVersion Include="DiscordRichPresence" Version="1.2.1.24" />
-    <PackageVersion Include="DynamicData" Version="7.14.2" />
+    <PackageVersion Include="DynamicData" Version="8.3.27" />
     <PackageVersion Include="FluentAvaloniaUI" Version="2.0.5" />
     <PackageVersion Include="GtkSharp.Dependencies" Version="1.1.1" />
     <PackageVersion Include="GtkSharp.Dependencies.osx" Version="0.0.5" />
     <PackageVersion Include="jp2masa.Avalonia.Flexbox" Version="0.3.0-beta.4" />
     <PackageVersion Include="LibHac" Version="0.19.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.7.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
     <PackageVersion Include="Microsoft.IdentityModel.JsonWebTokens" Version="7.2.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="2.3.2" />
+    <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.0" />
     <PackageVersion Include="MsgPack.Cli" Version="1.0.1" />
     <PackageVersion Include="NetCoreServer" Version="7.0.0" />
     <PackageVersion Include="NUnit" Version="3.13.3" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.1.0" />
-    <PackageVersion Include="OpenTK.Core" Version="4.8.1" />
+    <PackageVersion Include="OpenTK.Core" Version="4.8.2" />
-    <PackageVersion Include="OpenTK.Graphics" Version="4.8.1" />
+    <PackageVersion Include="OpenTK.Graphics" Version="4.8.2" />
-    <PackageVersion Include="OpenTK.Audio.OpenAL" Version="4.8.1" />
+    <PackageVersion Include="OpenTK.Audio.OpenAL" Version="4.8.2" />
-    <PackageVersion Include="OpenTK.Windowing.GraphicsLibraryFramework" Version="4.8.1" />
+    <PackageVersion Include="OpenTK.Windowing.GraphicsLibraryFramework" Version="4.8.2" />
     <PackageVersion Include="Ryujinx.Audio.OpenAL.Dependencies" Version="1.21.0.1" />
     <PackageVersion Include="Ryujinx.Graphics.Nvdec.Dependencies" Version="5.0.1-build13" />
     <PackageVersion Include="Ryujinx.Graphics.Vulkan.Dependencies.MoltenVK" Version="1.2.0" />
@@ -46,7 +46,7 @@
     <PackageVersion Include="SixLabors.ImageSharp" Version="1.0.4" />
     <PackageVersion Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta11" />
     <PackageVersion Include="SPB" Version="0.0.4-build28" />
-    <PackageVersion Include="System.Drawing.Common" Version="8.0.0" />
+    <PackageVersion Include="System.Drawing.Common" Version="8.0.1" />
     <PackageVersion Include="System.IO.Hashing" Version="8.0.0" />
     <PackageVersion Include="System.Management" Version="8.0.0" />
     <PackageVersion Include="UnicornEngine.Unicorn" Version="2.0.2-rc1-fb78016" />

src/ARMeilleure/Decoders/OpCodeTable.cs

@@ -517,7 +517,10 @@ namespace ARMeilleure.Decoders
             SetA64("0x00111100>>>xxx100111xxxxxxxxxx", InstName.Sqrshrn_V,       InstEmit.Sqrshrn_V,       OpCodeSimdShImm.Create);
             SetA64("0111111100>>>xxx100011xxxxxxxxxx", InstName.Sqrshrun_S,      InstEmit.Sqrshrun_S,      OpCodeSimdShImm.Create);
             SetA64("0x10111100>>>xxx100011xxxxxxxxxx", InstName.Sqrshrun_V,      InstEmit.Sqrshrun_V,      OpCodeSimdShImm.Create);
+            SetA64("010111110>>>>xxx011101xxxxxxxxxx", InstName.Sqshl_Si,        InstEmit.Sqshl_Si,        OpCodeSimdShImm.Create);
             SetA64("0>001110<<1xxxxx010011xxxxxxxxxx", InstName.Sqshl_V,         InstEmit.Sqshl_V,         OpCodeSimdReg.Create);
+            SetA64("0000111100>>>xxx011101xxxxxxxxxx", InstName.Sqshl_Vi,        InstEmit.Sqshl_Vi,        OpCodeSimdShImm.Create);
+            SetA64("010011110>>>>xxx011101xxxxxxxxxx", InstName.Sqshl_Vi,        InstEmit.Sqshl_Vi,        OpCodeSimdShImm.Create);
             SetA64("0101111100>>>xxx100101xxxxxxxxxx", InstName.Sqshrn_S,        InstEmit.Sqshrn_S,        OpCodeSimdShImm.Create);
             SetA64("0x00111100>>>xxx100101xxxxxxxxxx", InstName.Sqshrn_V,        InstEmit.Sqshrn_V,        OpCodeSimdShImm.Create);
             SetA64("0111111100>>>xxx100001xxxxxxxxxx", InstName.Sqshrun_S,       InstEmit.Sqshrun_S,       OpCodeSimdShImm.Create);

src/ARMeilleure/Instructions/InstEmitSimdShift.cs

@@ -116,7 +116,7 @@ namespace ARMeilleure.Instructions
             }
             else if (shift >= eSize)
             {
-                if ((op.RegisterSize == RegisterSize.Simd64))
+                if (op.RegisterSize == RegisterSize.Simd64)
                 {
                     Operand res = context.VectorZeroUpper64(GetVec(op.Rd));
 
@@ -359,6 +359,16 @@ namespace ARMeilleure.Instructions
             }
         }
 
+        public static void Sqshl_Si(ArmEmitterContext context)
+        {
+            EmitShlImmOp(context, signedDst: true, ShlRegFlags.Signed | ShlRegFlags.Scalar | ShlRegFlags.Saturating);
+        }
+
+        public static void Sqshl_Vi(ArmEmitterContext context)
+        {
+            EmitShlImmOp(context, signedDst: true, ShlRegFlags.Signed | ShlRegFlags.Saturating);
+        }
+
         public static void Sqshrn_S(ArmEmitterContext context)
         {
             if (Optimizations.UseAdvSimd)
@@ -1593,6 +1603,99 @@ namespace ARMeilleure.Instructions
             Saturating = 1 << 3,
         }
 
+        private static void EmitShlImmOp(ArmEmitterContext context, bool signedDst, ShlRegFlags flags = ShlRegFlags.None)
+        {
+            bool scalar = flags.HasFlag(ShlRegFlags.Scalar);
+            bool signed = flags.HasFlag(ShlRegFlags.Signed);
+            bool saturating = flags.HasFlag(ShlRegFlags.Saturating);
+
+            OpCodeSimdShImm op = (OpCodeSimdShImm)context.CurrOp;
+
+            Operand res = context.VectorZero();
+
+            int elems = !scalar ? op.GetBytesCount() >> op.Size : 1;
+
+            for (int index = 0; index < elems; index++)
+            {
+                Operand ne = EmitVectorExtract(context, op.Rn, index, op.Size, signed);
+
+                Operand e = !saturating
+                    ? EmitShlImm(context, ne, GetImmShl(op), op.Size)
+                    : EmitShlImmSatQ(context, ne, GetImmShl(op), op.Size, signed, signedDst);
+
+                res = EmitVectorInsert(context, res, e, index, op.Size);
+            }
+
+            context.Copy(GetVec(op.Rd), res);
+        }
+
+        private static Operand EmitShlImm(ArmEmitterContext context, Operand op, int shiftLsB, int size)
+        {
+            int eSize = 8 << size;
+
+            Debug.Assert(op.Type == OperandType.I64);
+            Debug.Assert(eSize == 8 || eSize == 16 || eSize == 32 || eSize == 64);
+
+            Operand res = context.AllocateLocal(OperandType.I64);
+
+            if (shiftLsB >= eSize)
+            {
+                Operand shl = context.ShiftLeft(op, Const(shiftLsB));
+                context.Copy(res, shl);
+            }
+            else
+            {
+                Operand zeroL = Const(0L);
+                context.Copy(res, zeroL);
+            }
+
+            return res;
+        }
+
+        private static Operand EmitShlImmSatQ(ArmEmitterContext context, Operand op, int shiftLsB, int size, bool signedSrc, bool signedDst)
+        {
+            int eSize = 8 << size;
+
+            Debug.Assert(op.Type == OperandType.I64);
+            Debug.Assert(eSize == 8 || eSize == 16 || eSize == 32 || eSize == 64);
+
+            Operand lblEnd = Label();
+
+            Operand res = context.Copy(context.AllocateLocal(OperandType.I64), op);
+
+            if (shiftLsB >= eSize)
+            {
+                context.Copy(res, signedSrc
+                    ? EmitSignedSignSatQ(context, op, size)
+                    : EmitUnsignedSignSatQ(context, op, size));
+            }
+            else
+            {
+                Operand shl = context.ShiftLeft(op, Const(shiftLsB));
+                if (eSize == 64)
+                {
+                    Operand sarOrShr = signedSrc
+                        ? context.ShiftRightSI(shl, Const(shiftLsB))
+                        : context.ShiftRightUI(shl, Const(shiftLsB));
+                    context.Copy(res, shl);
+                    context.BranchIf(lblEnd, sarOrShr, op, Comparison.Equal);
+                    context.Copy(res, signedSrc
+                        ? EmitSignedSignSatQ(context, op, size)
+                        : EmitUnsignedSignSatQ(context, op, size));
+                }
+                else
+                {
+                    context.Copy(res, signedSrc
+                        ? EmitSignedSrcSatQ(context, shl, size, signedDst)
+                        : EmitUnsignedSrcSatQ(context, shl, size, signedDst));
+                }
+            }
+
+            context.MarkLabel(lblEnd);
+
+            return res;
+        }
+
         private static void EmitShlRegOp(ArmEmitterContext context, ShlRegFlags flags = ShlRegFlags.None)
         {
             bool scalar = flags.HasFlag(ShlRegFlags.Scalar);

src/ARMeilleure/Instructions/InstName.cs

@@ -384,7 +384,9 @@ namespace ARMeilleure.Instructions
         Sqrshrn_V,
         Sqrshrun_S,
         Sqrshrun_V,
+        Sqshl_Si,
         Sqshl_V,
+        Sqshl_Vi,
         Sqshrn_S,
         Sqshrn_V,
         Sqshrun_S,

src/Ryujinx.Ava/App.axaml.cs

@@ -12,7 +12,6 @@ using Ryujinx.Ui.Common.Configuration;
 using Ryujinx.Ui.Common.Helper;
 using System;
 using System.Diagnostics;
-using System.IO;
 
 namespace Ryujinx.Ava
 {
@@ -90,8 +89,6 @@ namespace Ryujinx.Ava
             try
             {
                 string baseStyle = ConfigurationState.Instance.Ui.BaseStyle;
-                string themePath = ConfigurationState.Instance.Ui.CustomThemePath;
-                bool enableCustomTheme = ConfigurationState.Instance.Ui.EnableCustomTheme;
 
                 if (string.IsNullOrWhiteSpace(baseStyle))
                 {
@@ -106,24 +103,6 @@ namespace Ryujinx.Ava
                     "Dark" => ThemeVariant.Dark,
                     _ => ThemeVariant.Default,
                 };
-
-                if (enableCustomTheme)
-                {
-                    if (!string.IsNullOrWhiteSpace(themePath))
-                    {
-                        try
-                        {
-                            var themeContent = File.ReadAllText(themePath);
-                            var customStyle = AvaloniaRuntimeXamlLoader.Parse<IStyle>(themeContent);
-
-                            Styles.Add(customStyle);
-                        }
-                        catch (Exception ex)
-                        {
-                            Logger.Error?.Print(LogClass.Application, $"Failed to Apply Custom Theme. Error: {ex.Message}");
-                        }
-                    }
-                }
             }
             catch (Exception)
             {

src/Ryujinx.Ava/AppHost.cs

@@ -978,7 +978,7 @@ namespace Ryujinx.Ava
                 ConfigurationState.Instance.Graphics.AspectRatio.Value.ToText(),
                 LocaleManager.Instance[LocaleKeys.Game] + $": {Device.Statistics.GetGameFrameRate():00.00} FPS ({Device.Statistics.GetGameFrameTime():00.00} ms)",
                 $"FIFO: {Device.Statistics.GetFifoPercent():00.00} %",
-                $"GPU: {_renderer.GetHardwareInfo().GpuVendor}"));
+                $"GPU: {_renderer.GetHardwareInfo().GpuDriver}"));
         }
 
         public async Task ShowExitPrompt()

src/Ryujinx.Ava/Assets/Locales/en_US.json

@@ -54,8 +54,6 @@
   "GameListContextMenuManageTitleUpdatesToolTip": "Opens the Title Update management window",
   "GameListContextMenuManageDlc": "Manage DLC",
   "GameListContextMenuManageDlcToolTip": "Opens the DLC management window",
-  "GameListContextMenuOpenModsDirectory": "Open Mods Directory",
-  "GameListContextMenuOpenModsDirectoryToolTip": "Opens the directory which contains Application's Mods",
   "GameListContextMenuCacheManagement": "Cache Management",
   "GameListContextMenuCacheManagementPurgePptc": "Queue PPTC Rebuild",
   "GameListContextMenuCacheManagementPurgePptcToolTip": "Trigger PPTC to rebuild at boot time on the next game launch",
@@ -294,13 +292,9 @@
   "GameListContextMenuRunApplication": "Run Application",
   "GameListContextMenuToggleFavorite": "Toggle Favorite",
   "GameListContextMenuToggleFavoriteToolTip": "Toggle Favorite status of Game",
-  "SettingsTabGeneralTheme": "Theme",
+  "SettingsTabGeneralTheme": "Theme:",
-  "SettingsTabGeneralThemeCustomTheme": "Custom Theme Path",
+  "SettingsTabGeneralThemeDark": "Dark",
-  "SettingsTabGeneralThemeBaseStyle": "Base Style",
+  "SettingsTabGeneralThemeLight": "Light",
-  "SettingsTabGeneralThemeBaseStyleDark": "Dark",
-  "SettingsTabGeneralThemeBaseStyleLight": "Light",
-  "SettingsTabGeneralThemeEnableCustomTheme": "Enable Custom Theme",
-  "ButtonBrowse": "Browse",
   "ControllerSettingsConfigureGeneral": "Configure",
   "ControllerSettingsRumble": "Rumble",
   "ControllerSettingsRumbleStrongMultiplier": "Strong Rumble Multiplier",
@@ -387,7 +381,8 @@
   "DialogUserProfileUnsavedChangesSubMessage": "Do you want to discard your changes?",
   "DialogControllerSettingsModifiedConfirmMessage": "The current controller settings has been updated.",
   "DialogControllerSettingsModifiedConfirmSubMessage": "Do you want to save?",
-  "DialogLoadNcaErrorMessage": "{0}. Errored File: {1}",
+  "DialogLoadFileErrorMessage": "{0}. Errored File: {1}",
+  "DialogModAlreadyExistsMessage": "Mod already exists",
   "DialogDlcNoDlcErrorMessage": "The specified file does not contain a DLC for the selected title!",
   "DialogPerformanceCheckLoggingEnabledMessage": "You have trace logging enabled, which is designed to be used by developers only.",
   "DialogPerformanceCheckLoggingEnabledConfirmMessage": "For optimal performance, it's recommended to disable trace logging. Would you like to disable trace logging now?",
@@ -398,6 +393,8 @@
   "DialogUpdateAddUpdateErrorMessage": "The specified file does not contain an update for the selected title!",
   "DialogSettingsBackendThreadingWarningTitle": "Warning - Backend Threading",
   "DialogSettingsBackendThreadingWarningMessage": "Ryujinx must be restarted after changing this option for it to apply fully. Depending on your platform, you may need to manually disable your driver's own multithreading when using Ryujinx's.",
+  "DialogModManagerDeletionWarningMessage": "You are about to delete the mod: {0}\n\nAre you sure you want to proceed?",
+  "DialogModManagerDeletionAllWarningMessage": "You are about to delete all mods for this title.\n\nAre you sure you want to proceed?",
   "SettingsTabGraphicsFeaturesOptions": "Features",
   "SettingsTabGraphicsBackendMultithreading": "Graphics Backend Multithreading:",
   "CommonAuto": "Auto",
@@ -432,6 +429,7 @@
   "DlcManagerRemoveAllButton": "Remove All",
   "DlcManagerEnableAllButton": "Enable All",
   "DlcManagerDisableAllButton": "Disable All",
+  "ModManagerDeleteAllButton": "Delete All",
   "MenuBarOptionsChangeLanguage": "Change Language",
   "MenuBarShowFileTypes": "Show File Types",
   "CommonSort": "Sort",
@@ -506,6 +504,8 @@
   "EnableInternetAccessTooltip": "Allows the emulated application to connect to the Internet.\n\nGames with a LAN mode can connect to each other when this is enabled and the systems are connected to the same access point. This includes real consoles as well.\n\nDoes NOT allow connecting to Nintendo servers. May cause crashing in certain games that try to connect to the Internet.\n\nLeave OFF if unsure.",
   "GameListContextMenuManageCheatToolTip": "Manage Cheats",
   "GameListContextMenuManageCheat": "Manage Cheats",
+  "GameListContextMenuManageModToolTip": "Manage Mods",
+  "GameListContextMenuManageMod": "Manage Mods",
   "ControllerSettingsStickRange": "Range:",
   "DialogStopEmulationTitle": "Ryujinx - Stop Emulation",
   "DialogStopEmulationMessage": "Are you sure you want to stop emulation?",
@@ -517,8 +517,6 @@
   "SettingsTabCpuMemory": "CPU Mode",
   "DialogUpdaterFlatpakNotSupportedMessage": "Please update Ryujinx via FlatHub.",
   "UpdaterDisabledWarningTitle": "Updater Disabled!",
-  "GameListContextMenuOpenSdModsDirectory": "Open Atmosphere Mods Directory",
-  "GameListContextMenuOpenSdModsDirectoryToolTip": "Opens the alternative SD card Atmosphere directory which contains Application's Mods. Useful for mods that are packaged for real hardware.",
   "ControllerSettingsRotate90": "Rotate 90° Clockwise",
   "IconSize": "Icon Size",
   "IconSizeTooltip": "Change the size of game icons",
@@ -590,6 +588,7 @@
   "Writable": "Writable",
   "SelectDlcDialogTitle": "Select DLC files",
   "SelectUpdateDialogTitle": "Select update files",
+  "SelectModDialogTitle": "Select mod directory",
   "UserProfileWindowTitle": "User Profiles Manager",
   "CheatWindowTitle": "Cheats Manager",
   "DlcWindowTitle": "Manage Downloadable Content for {0} ({1})",
@@ -597,6 +596,7 @@
   "CheatWindowHeading": "Cheats Available for {0} [{1}]",
   "BuildId": "BuildId:",
   "DlcWindowHeading": "{0} Downloadable Content(s)",
+  "ModWindowHeading": "{0} Mod(s)",
   "UserProfilesEditProfile": "Edit Selected",
   "Cancel": "Cancel",
   "Save": "Save",

src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml

@@ -47,13 +47,9 @@
         Header="{locale:Locale GameListContextMenuManageCheat}"
         ToolTip.Tip="{locale:Locale GameListContextMenuManageCheatToolTip}" />
     <MenuItem
-        Click="OpenModsDirectory_Click"
+        Click="OpenModManager_Click"
-        Header="{locale:Locale GameListContextMenuOpenModsDirectory}"
+        Header="{locale:Locale GameListContextMenuManageMod}"
-        ToolTip.Tip="{locale:Locale GameListContextMenuOpenModsDirectoryToolTip}" />
+        ToolTip.Tip="{locale:Locale GameListContextMenuManageModToolTip}" />
-    <MenuItem
-        Click="OpenSdModsDirectory_Click"
-        Header="{locale:Locale GameListContextMenuOpenSdModsDirectory}"
-        ToolTip.Tip="{locale:Locale GameListContextMenuOpenSdModsDirectoryToolTip}" />
     <Separator />
     <MenuItem Header="{locale:Locale GameListContextMenuCacheManagement}">
         <MenuItem

src/Ryujinx.Ava/UI/Controls/ApplicationContextMenu.axaml.cs

@@ -126,29 +126,13 @@ namespace Ryujinx.Ava.UI.Controls
             }
         }
 
-        public void OpenModsDirectory_Click(object sender, RoutedEventArgs args)
+        public async void OpenModManager_Click(object sender, RoutedEventArgs args)
         {
             var viewModel = (sender as MenuItem)?.DataContext as MainWindowViewModel;
 
             if (viewModel?.SelectedApplication != null)
             {
-                string modsBasePath = ModLoader.GetModsBasePath();
+                await ModManagerWindow.Show(ulong.Parse(viewModel.SelectedApplication.TitleId, NumberStyles.HexNumber), viewModel.SelectedApplication.TitleName);
-                string titleModsPath = ModLoader.GetTitleDir(modsBasePath, viewModel.SelectedApplication.TitleId);
-
-                OpenHelper.OpenFolder(titleModsPath);
-            }
-        }
-
-        public void OpenSdModsDirectory_Click(object sender, RoutedEventArgs args)
-        {
-            var viewModel = (sender as MenuItem)?.DataContext as MainWindowViewModel;
-
-            if (viewModel?.SelectedApplication != null)
-            {
-                string sdModsBasePath = ModLoader.GetSdModsBasePath();
-                string titleModsPath = ModLoader.GetTitleDir(sdModsBasePath, viewModel.SelectedApplication.TitleId);
-
-                OpenHelper.OpenFolder(titleModsPath);
             }
         }
 

src/Ryujinx.Ava/UI/Models/ModModel.cs

@@ -0,0 +1,30 @@
+using Ryujinx.Ava.UI.ViewModels;
+using System.IO;
+
+namespace Ryujinx.Ava.UI.Models
+{
+    public class ModModel : BaseModel
+    {
+        private bool _enabled;
+
+        public bool Enabled
+        {
+            get => _enabled;
+            set
+            {
+                _enabled = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public string Path { get; }
+        public string Name { get; }
+
+        public ModModel(string path, string name, bool enabled)
+        {
+            Path = path;
+            Name = name;
+            Enabled = enabled;
+        }
+    }
+}

src/Ryujinx.Ava/UI/ViewModels/DownloadableContentManagerViewModel.cs

@@ -39,6 +39,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         private string _search;
         private readonly ulong _titleId;
+        private readonly IStorageProvider _storageProvider;
 
         private static readonly DownloadableContentJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
 
@@ -90,8 +91,6 @@ namespace Ryujinx.Ava.UI.ViewModels
             get => string.Format(LocaleManager.Instance[LocaleKeys.DlcWindowHeading], DownloadableContents.Count);
         }
 
-        public IStorageProvider StorageProvider;
-
         public DownloadableContentManagerViewModel(VirtualFileSystem virtualFileSystem, ulong titleId)
         {
             _virtualFileSystem = virtualFileSystem;
@@ -100,7 +99,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
             if (Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
             {
-                StorageProvider = desktop.MainWindow.StorageProvider;
+                _storageProvider = desktop.MainWindow.StorageProvider;
             }
 
             _downloadableContentJsonPath = Path.Combine(AppDataManager.GamesDirPath, titleId.ToString("x16"), "dlc.json");
@@ -194,7 +193,7 @@ namespace Ryujinx.Ava.UI.ViewModels
             {
                 Dispatcher.UIThread.InvokeAsync(async () =>
                 {
-                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance[LocaleKeys.DialogLoadNcaErrorMessage], ex.Message, containerPath));
+                    await ContentDialogHelper.CreateErrorDialog(string.Format(LocaleManager.Instance[LocaleKeys.DialogLoadFileErrorMessage], ex.Message, containerPath));
                 });
             }
 
@@ -203,7 +202,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         public async void Add()
         {
-            var result = await StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+            var result = await _storageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
             {
                 Title = LocaleManager.Instance[LocaleKeys.SelectDlcDialogTitle],
                 AllowMultiple = true,

src/Ryujinx.Ava/UI/ViewModels/ModManagerViewModel.cs

@@ -0,0 +1,260 @@
+using Avalonia;
+using Avalonia.Collections;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Platform.Storage;
+using Avalonia.Threading;
+using DynamicData;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Models;
+using Ryujinx.Common.Configuration;
+using Ryujinx.Common.Utilities;
+using Ryujinx.HLE.HOS;
+using System.IO;
+using System.Linq;
+
+namespace Ryujinx.Ava.UI.ViewModels
+{
+    public class ModManagerViewModel : BaseModel
+    {
+        private readonly string _modJsonPath;
+
+        private AvaloniaList<ModModel> _mods = new();
+        private AvaloniaList<ModModel> _views = new();
+        private AvaloniaList<ModModel> _selectedMods = new();
+
+        private string _search;
+        private readonly ulong _applicationId;
+        private readonly IStorageProvider _storageProvider;
+
+        private static readonly ModMetadataJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
+
+        public AvaloniaList<ModModel> Mods
+        {
+            get => _mods;
+            set
+            {
+                _mods = value;
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(ModCount));
+                Sort();
+            }
+        }
+
+        public AvaloniaList<ModModel> Views
+        {
+            get => _views;
+            set
+            {
+                _views = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public AvaloniaList<ModModel> SelectedMods
+        {
+            get => _selectedMods;
+            set
+            {
+                _selectedMods = value;
+                OnPropertyChanged();
+            }
+        }
+
+        public string Search
+        {
+            get => _search;
+            set
+            {
+                _search = value;
+                OnPropertyChanged();
+                Sort();
+            }
+        }
+
+        public string ModCount
+        {
+            get => string.Format(LocaleManager.Instance[LocaleKeys.ModWindowHeading], Mods.Count);
+        }
+
+        public ModManagerViewModel(ulong applicationId)
+        {
+            _applicationId = applicationId;
+
+            _modJsonPath = Path.Combine(AppDataManager.GamesDirPath, applicationId.ToString("x16"), "mods.json");
+
+            if (Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+            {
+                _storageProvider = desktop.MainWindow.StorageProvider;
+            }
+
+            LoadMods(applicationId);
+        }
+
+        private void LoadMods(ulong applicationId)
+        {
+            Mods.Clear();
+            SelectedMods.Clear();
+
+            string[] modsBasePaths = [ModLoader.GetSdModsBasePath(), ModLoader.GetModsBasePath()];
+
+            foreach (var path in modsBasePaths)
+            {
+                var modCache = new ModLoader.ModCache();
+
+                ModLoader.QueryContentsDir(modCache, new DirectoryInfo(Path.Combine(path, "contents")), applicationId);
+
+                foreach (var mod in modCache.RomfsDirs)
+                {
+                    var modModel = new ModModel(mod.Path.Parent.FullName, mod.Name, mod.Enabled);
+                    if (Mods.All(x => x.Path != mod.Path.Parent.FullName))
+                    {
+                        Mods.Add(modModel);
+                    }
+                }
+
+                foreach (var mod in modCache.RomfsContainers)
+                {
+                    Mods.Add(new ModModel(mod.Path.FullName, mod.Name, mod.Enabled));
+                }
+
+                foreach (var mod in modCache.ExefsDirs)
+                {
+                    var modModel = new ModModel(mod.Path.Parent.FullName, mod.Name, mod.Enabled);
+                    if (Mods.All(x => x.Path != mod.Path.Parent.FullName))
+                    {
+                        Mods.Add(modModel);
+                    }
+                }
+
+                foreach (var mod in modCache.ExefsContainers)
+                {
+                    Mods.Add(new ModModel(mod.Path.FullName, mod.Name, mod.Enabled));
+                }
+            }
+
+            Sort();
+        }
+
+        public void Sort()
+        {
+            Mods.AsObservableChangeSet()
+                .Filter(Filter)
+                .Bind(out var view).AsObservableList();
+
+            _views.Clear();
+            _views.AddRange(view);
+
+            SelectedMods = new(Views.Where(x => x.Enabled));
+
+            OnPropertyChanged(nameof(ModCount));
+            OnPropertyChanged(nameof(Views));
+            OnPropertyChanged(nameof(SelectedMods));
+        }
+
+        private bool Filter(object arg)
+        {
+            if (arg is ModModel content)
+            {
+                return string.IsNullOrWhiteSpace(_search) || content.Name.ToLower().Contains(_search.ToLower());
+            }
+
+            return false;
+        }
+
+        public void Save()
+        {
+            ModMetadata modData = new();
+
+            foreach (ModModel mod in Mods)
+            {
+                modData.Mods.Add(new Mod
+                {
+                    Name = mod.Name,
+                    Path = mod.Path,
+                    Enabled = SelectedMods.Contains(mod),
+                });
+            }
+
+            JsonHelper.SerializeToFile(_modJsonPath, modData, _serializerContext.ModMetadata);
+        }
+
+        public void Delete(ModModel model)
+        {
+            Directory.Delete(model.Path, true);
+
+            Mods.Remove(model);
+            OnPropertyChanged(nameof(ModCount));
+            Sort();
+        }
+
+        private void AddMod(DirectoryInfo directory)
+        {
+            var directories = Directory.GetDirectories(directory.ToString(), "*", SearchOption.AllDirectories);
+            var destinationDir = ModLoader.GetApplicationDir(ModLoader.GetSdModsBasePath(), _applicationId.ToString("x16"));
+
+            foreach (var dir in directories)
+            {
+                string dirToCreate = dir.Replace(directory.Parent.ToString(), destinationDir);
+
+                // Mod already exists
+                if (Directory.Exists(dirToCreate))
+                {
+                    Dispatcher.UIThread.Post(async () =>
+                    {
+                        await ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadFileErrorMessage, LocaleKeys.DialogModAlreadyExistsMessage, dirToCreate));
+                    });
+
+                    return;
+                }
+
+                Directory.CreateDirectory(dirToCreate);
+            }
+
+            var files = Directory.GetFiles(directory.ToString(), "*", SearchOption.AllDirectories);
+
+            foreach (var file in files)
+            {
+                File.Copy(file, file.Replace(directory.Parent.ToString(), destinationDir), true);
+            }
+
+            LoadMods(_applicationId);
+        }
+
+        public async void Add()
+        {
+            var result = await _storageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions
+            {
+                Title = LocaleManager.Instance[LocaleKeys.SelectModDialogTitle],
+                AllowMultiple = true,
+            });
+
+            foreach (var folder in result)
+            {
+                AddMod(new DirectoryInfo(folder.Path.LocalPath));
+            }
+        }
+
+        public void DeleteAll()
+        {
+            foreach (var mod in Mods)
+            {
+                Directory.Delete(mod.Path, true);
+            }
+
+            Mods.Clear();
+            OnPropertyChanged(nameof(ModCount));
+            Sort();
+        }
+
+        public void EnableAll()
+        {
+            SelectedMods = new(Mods);
+        }
+
+        public void DisableAll()
+        {
+            SelectedMods.Clear();
+        }
+    }
+}

src/Ryujinx.Ava/UI/ViewModels/SettingsViewModel.cs

@@ -48,7 +48,6 @@ namespace Ryujinx.Ava.UI.ViewModels
         private readonly List<string> _gpuIds = new();
         private KeyboardHotkeys _keyboardHotkeys;
         private int _graphicsBackendIndex;
-        private string _customThemePath;
         private int _scalingFilter;
         private int _scalingFilterLevel;
 
@@ -160,7 +159,6 @@ namespace Ryujinx.Ava.UI.ViewModels
         public bool IsOpenAlEnabled { get; set; }
         public bool IsSoundIoEnabled { get; set; }
         public bool IsSDL2Enabled { get; set; }
-        public bool EnableCustomTheme { get; set; }
         public bool IsCustomResolutionScaleActive => _resolutionScale == 4;
         public bool IsScalingFilterActive => _scalingFilter == (int)Ryujinx.Common.Configuration.ScalingFilter.Fsr;
 
@@ -170,20 +168,6 @@ namespace Ryujinx.Ava.UI.ViewModels
         public string TimeZone { get; set; }
         public string ShaderDumpPath { get; set; }
 
-        public string CustomThemePath
-        {
-            get
-            {
-                return _customThemePath;
-            }
-            set
-            {
-                _customThemePath = value;
-
-                OnPropertyChanged();
-            }
-        }
-
         public int Language { get; set; }
         public int Region { get; set; }
         public int FsGlobalAccessLogMode { get; set; }
@@ -426,8 +410,6 @@ namespace Ryujinx.Ava.UI.ViewModels
             GameDirectories.Clear();
             GameDirectories.AddRange(config.Ui.GameDirs.Value);
 
-            EnableCustomTheme = config.Ui.EnableCustomTheme;
-            CustomThemePath = config.Ui.CustomThemePath;
             BaseStyleIndex = config.Ui.BaseStyle == "Light" ? 0 : 1;
 
             // Input
@@ -515,8 +497,6 @@ namespace Ryujinx.Ava.UI.ViewModels
                 config.Ui.GameDirs.Value = gameDirs;
             }
 
-            config.Ui.EnableCustomTheme.Value = EnableCustomTheme;
-            config.Ui.CustomThemePath.Value = CustomThemePath;
             config.Ui.BaseStyle.Value = BaseStyleIndex == 0 ? "Light" : "Dark";
 
             // Input

src/Ryujinx.Ava/UI/ViewModels/TitleUpdateViewModel.cs

@@ -192,7 +192,7 @@ namespace Ryujinx.Ava.UI.ViewModels
                 }
                 catch (Exception ex)
                 {
-                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadNcaErrorMessage, ex.Message, path)));
+                    Dispatcher.UIThread.InvokeAsync(() => ContentDialogHelper.CreateErrorDialog(LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogLoadFileErrorMessage, ex.Message, path)));
                 }
             }
         }

src/Ryujinx.Ava/UI/Views/Settings/SettingsUIView.axaml

@@ -36,7 +36,7 @@
                     <CheckBox IsChecked="{Binding ShowConfirmExit}">
                         <TextBlock Text="{locale:Locale SettingsTabGeneralShowConfirmExitDialog}" />
                     </CheckBox>
-                    <StackPanel Margin="0, 15, 0, 10" Orientation="Horizontal">
+                    <StackPanel Margin="0, 15, 0, 0" Orientation="Horizontal">
                         <TextBlock VerticalAlignment="Center"
                                    Text="{locale:Locale SettingsTabGeneralHideCursor}"
                                    Width="150" />
@@ -54,6 +54,22 @@
                             </ComboBoxItem>
                         </ComboBox>
                     </StackPanel>
+                    <StackPanel Margin="0, 15, 0, 10" Orientation="Horizontal">
+                        <TextBlock
+                            VerticalAlignment="Center"
+                            Text="{locale:Locale SettingsTabGeneralTheme}"
+                            Width="150" />
+                        <ComboBox SelectedIndex="{Binding BaseStyleIndex}"
+                                  HorizontalContentAlignment="Left"
+                                  MinWidth="100">
+                            <ComboBoxItem>
+                                <TextBlock Text="{locale:Locale SettingsTabGeneralThemeLight}" />
+                            </ComboBoxItem>
+                            <ComboBoxItem>
+                                <TextBlock Text="{locale:Locale SettingsTabGeneralThemeDark}" />
+                            </ComboBoxItem>
+                        </ComboBox>
+                    </StackPanel>
                 </StackPanel>
                 <Separator Height="1" />
                 <TextBlock Classes="h1" Text="{locale:Locale SettingsTabGeneralGameDirectories}" />
@@ -106,64 +122,6 @@
                         </Button>
                     </Grid>
                 </StackPanel>
-                <Separator Height="1" />
-                <TextBlock Classes="h1" Text="{locale:Locale SettingsTabGeneralTheme}" />
-                <Grid Margin="10,0,0,0">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="Auto" />
-                        <ColumnDefinition />
-                        <ColumnDefinition Width="Auto" />
-                    </Grid.ColumnDefinitions>
-                    <Grid.RowDefinitions>
-                        <RowDefinition />
-                        <RowDefinition />
-                        <RowDefinition />
-                    </Grid.RowDefinitions>
-                    <CheckBox
-                        IsChecked="{Binding EnableCustomTheme}"
-                        ToolTip.Tip="{locale:Locale CustomThemeCheckTooltip}">
-                        <TextBlock Text="{locale:Locale SettingsTabGeneralThemeEnableCustomTheme}" />
-                    </CheckBox>
-                    <TextBlock
-                        Grid.Column="0"
-                        Grid.Row="1"
-                        VerticalAlignment="Center"
-                        Margin="0,10,0,0"
-                        Text="{locale:Locale SettingsTabGeneralThemeCustomTheme}"
-                        ToolTip.Tip="{locale:Locale CustomThemePathTooltip}" />
-                    <TextBox
-                        Grid.Row="1"
-                        Grid.Column="1"
-                        Margin="0,10,0,0"
-                        Text="{Binding CustomThemePath}" />
-                    <Button
-                        Grid.Row="1"
-                        Grid.Column="2"
-                        Margin="10,10,0,0"
-                        Click="BrowseTheme"
-                        ToolTip.Tip="{locale:Locale CustomThemeBrowseTooltip}"
-                        Content="{locale:Locale ButtonBrowse}" />
-                    <TextBlock
-                        Grid.Column="0"
-                        Grid.Row="2"
-                        VerticalAlignment="Center"
-                        Margin="0,10,0,0"
-                        Text="{locale:Locale SettingsTabGeneralThemeBaseStyle}" />
-                    <ComboBox
-                        Grid.Column="1"
-                        Grid.Row="2"
-                        VerticalAlignment="Center"
-                        Margin="0,10,0,0"
-                        MinWidth="100"
-                        SelectedIndex="{Binding BaseStyleIndex}">
-                        <ComboBoxItem>
-                            <TextBlock Text="{locale:Locale SettingsTabGeneralThemeBaseStyleLight}" />
-                        </ComboBoxItem>
-                        <ComboBoxItem>
-                            <TextBlock Text="{locale:Locale SettingsTabGeneralThemeBaseStyleDark}" />
-                        </ComboBoxItem>
-                    </ComboBox>
-                </Grid>
             </StackPanel>
         </Border>
     </ScrollViewer>

src/Ryujinx.Ava/UI/Views/Settings/SettingsUIView.axaml.cs

@@ -61,29 +61,5 @@ namespace Ryujinx.Ava.UI.Views.Settings
                 GameList.SelectedIndex = oldIndex < GameList.ItemCount ? oldIndex : 0;
             }
         }
-
-        public async void BrowseTheme(object sender, RoutedEventArgs e)
-        {
-            var window = this.GetVisualRoot() as Window;
-            var result = await window.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
-            {
-                Title = LocaleManager.Instance[LocaleKeys.SettingsSelectThemeFileDialogTitle],
-                AllowMultiple = false,
-                FileTypeFilter = new List<FilePickerFileType>
-                {
-                    new("xml")
-                    {
-                        Patterns = new[] { "*.xaml" },
-                        AppleUniformTypeIdentifiers = new[] { "com.ryujinx.xaml" },
-                        MimeTypes = new[] { "application/xaml+xml" },
-                    },
-                },
-            });
-
-            if (result.Count > 0)
-            {
-                ViewModel.CustomThemePath = result[0].Path.LocalPath;
-            }
-        }
     }
 }

src/Ryujinx.Ava/UI/Windows/CheatWindow.axaml.cs

@@ -41,7 +41,7 @@ namespace Ryujinx.Ava.UI.Windows
             InitializeComponent();
 
             string modsBasePath = ModLoader.GetModsBasePath();
-            string titleModsPath = ModLoader.GetTitleDir(modsBasePath, titleId);
+            string titleModsPath = ModLoader.GetApplicationDir(modsBasePath, titleId);
             ulong titleIdValue = ulong.Parse(titleId, NumberStyles.HexNumber);
 
             _enabledCheatsPath = Path.Combine(titleModsPath, "cheats", "enabled.txt");

src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml

@@ -0,0 +1,179 @@
+<UserControl
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:locale="clr-namespace:Ryujinx.Ava.Common.Locale"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:viewModels="clr-namespace:Ryujinx.Ava.UI.ViewModels"
+    xmlns:models="clr-namespace:Ryujinx.Ava.UI.Models"
+    xmlns:ui="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
+    Width="500"
+    Height="380"
+    mc:Ignorable="d"
+    x:Class="Ryujinx.Ava.UI.Windows.ModManagerWindow"
+    x:CompileBindings="True"
+    x:DataType="viewModels:ModManagerViewModel"
+    Focusable="True">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Panel
+            Margin="0 0 0 10"
+            Grid.Row="0">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition Width="*" />
+                </Grid.ColumnDefinitions>
+                <TextBlock
+                    Grid.Column="0"
+                    Text="{Binding ModCount}" />
+                <StackPanel
+                    Margin="10 0"
+                    Grid.Column="1"
+                    Orientation="Horizontal">
+                    <Button
+                        Name="EnableAllButton"
+                        MinWidth="90"
+                        Margin="5"
+                        Command="{ReflectionBinding EnableAll}">
+                        <TextBlock Text="{locale:Locale DlcManagerEnableAllButton}" />
+                    </Button>
+                    <Button
+                        Name="DisableAllButton"
+                        MinWidth="90"
+                        Margin="5"
+                        Command="{ReflectionBinding DisableAll}">
+                        <TextBlock Text="{locale:Locale DlcManagerDisableAllButton}" />
+                    </Button>
+                </StackPanel>
+                <TextBox
+                    Grid.Column="2"
+                    MinHeight="27"
+                    MaxHeight="27"
+                    HorizontalAlignment="Stretch"
+                    Watermark="{locale:Locale Search}"
+                    Text="{Binding Search}" />
+            </Grid>
+        </Panel>
+        <Border
+            Grid.Row="1"
+            Margin="0 0 0 24"
+            HorizontalAlignment="Stretch"
+            VerticalAlignment="Stretch"
+            BorderBrush="{DynamicResource AppListHoverBackgroundColor}"
+            BorderThickness="1"
+            CornerRadius="5"
+            Padding="2.5">
+            <ListBox
+                AutoScrollToSelectedItem="False"
+                SelectionMode="Multiple, Toggle"
+                Background="Transparent"
+                SelectionChanged="OnSelectionChanged"
+                SelectedItems="{Binding SelectedMods, Mode=TwoWay}"
+                ItemsSource="{Binding Views}">
+                <ListBox.DataTemplates>
+                    <DataTemplate
+                        DataType="models:ModModel">
+                        <Panel Margin="10">
+                            <Grid>
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="*" />
+                                    <ColumnDefinition Width="Auto" />
+                                </Grid.ColumnDefinitions>
+                                <TextBlock
+                                    HorizontalAlignment="Left"
+                                    VerticalAlignment="Center"
+                                    MaxLines="2"
+                                    TextWrapping="Wrap"
+                                    TextTrimming="CharacterEllipsis"
+                                    Text="{Binding Name}" />
+                                <StackPanel
+                                    Grid.Column="1"
+                                    Spacing="10"
+                                    Orientation="Horizontal"
+                                    HorizontalAlignment="Right">
+                                    <Button
+                                        VerticalAlignment="Center"
+                                        HorizontalAlignment="Right"
+                                        Padding="10"
+                                        MinWidth="0"
+                                        MinHeight="0"
+                                        Click="OpenLocation">
+                                        <ui:SymbolIcon
+                                            Symbol="OpenFolder"
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center" />
+                                    </Button>
+                                    <Button
+                                        VerticalAlignment="Center"
+                                        HorizontalAlignment="Right"
+                                        Padding="10"
+                                        MinWidth="0"
+                                        MinHeight="0"
+                                        Click="DeleteMod">
+                                        <ui:SymbolIcon
+                                            Symbol="Cancel"
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center" />
+                                    </Button>
+                                </StackPanel>
+                            </Grid>
+                        </Panel>
+                    </DataTemplate>
+                </ListBox.DataTemplates>
+                <ListBox.Styles>
+                    <Style Selector="ListBoxItem">
+                        <Setter Property="Background" Value="Transparent" />
+                    </Style>
+                </ListBox.Styles>
+            </ListBox>
+        </Border>
+        <Panel
+            Grid.Row="2"
+            HorizontalAlignment="Stretch">
+            <StackPanel
+                Orientation="Horizontal"
+                Spacing="10"
+                HorizontalAlignment="Left">
+                <Button
+                    Name="AddButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Command="{Binding Add}">
+                    <TextBlock Text="{locale:Locale SettingsTabGeneralAdd}" />
+                </Button>
+                <Button
+                    Name="RemoveAllButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="DeleteAll">
+                    <TextBlock Text="{locale:Locale ModManagerDeleteAllButton}" />
+                </Button>
+            </StackPanel>
+            <StackPanel
+                Orientation="Horizontal"
+                Spacing="10"
+                HorizontalAlignment="Right">
+                <Button
+                    Name="SaveButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="SaveAndClose">
+                    <TextBlock Text="{locale:Locale SettingsButtonSave}" />
+                </Button>
+                <Button
+                    Name="CancelButton"
+                    MinWidth="90"
+                    Margin="5"
+                    Click="Close">
+                    <TextBlock Text="{locale:Locale InputDialogCancel}" />
+                </Button>
+            </StackPanel>
+        </Panel>
+    </Grid>
+</UserControl>

src/Ryujinx.Ava/UI/Windows/ModManagerWindow.axaml.cs

@@ -0,0 +1,139 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Styling;
+using FluentAvalonia.UI.Controls;
+using Ryujinx.Ava.Common.Locale;
+using Ryujinx.Ava.UI.Helpers;
+using Ryujinx.Ava.UI.Models;
+using Ryujinx.Ava.UI.ViewModels;
+using Ryujinx.Ui.Common.Helper;
+using System.Threading.Tasks;
+using Button = Avalonia.Controls.Button;
+
+namespace Ryujinx.Ava.UI.Windows
+{
+    public partial class ModManagerWindow : UserControl
+    {
+        public ModManagerViewModel ViewModel;
+
+        public ModManagerWindow()
+        {
+            DataContext = this;
+
+            InitializeComponent();
+        }
+
+        public ModManagerWindow(ulong titleId)
+        {
+            DataContext = ViewModel = new ModManagerViewModel(titleId);
+
+            InitializeComponent();
+        }
+
+        public static async Task Show(ulong titleId, string titleName)
+        {
+            ContentDialog contentDialog = new()
+            {
+                PrimaryButtonText = "",
+                SecondaryButtonText = "",
+                CloseButtonText = "",
+                Content = new ModManagerWindow(titleId),
+                Title = string.Format(LocaleManager.Instance[LocaleKeys.ModWindowHeading], titleName, titleId.ToString("X16")),
+            };
+
+            Style bottomBorder = new(x => x.OfType<Grid>().Name("DialogSpace").Child().OfType<Border>());
+            bottomBorder.Setters.Add(new Setter(IsVisibleProperty, false));
+
+            contentDialog.Styles.Add(bottomBorder);
+
+            await contentDialog.ShowAsync();
+        }
+
+        private void SaveAndClose(object sender, RoutedEventArgs e)
+        {
+            ViewModel.Save();
+            ((ContentDialog)Parent).Hide();
+        }
+
+        private void Close(object sender, RoutedEventArgs e)
+        {
+            ((ContentDialog)Parent).Hide();
+        }
+
+        private async void DeleteMod(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button)
+            {
+                if (button.DataContext is ModModel model)
+                {
+                    var result = await ContentDialogHelper.CreateConfirmationDialog(
+                        LocaleManager.Instance[LocaleKeys.DialogWarning],
+                        LocaleManager.Instance.UpdateAndGetDynamicValue(LocaleKeys.DialogModManagerDeletionWarningMessage, model.Name),
+                        LocaleManager.Instance[LocaleKeys.InputDialogYes],
+                        LocaleManager.Instance[LocaleKeys.InputDialogNo],
+                        LocaleManager.Instance[LocaleKeys.RyujinxConfirm]);
+
+                    if (result == UserResult.Yes)
+                    {
+                        ViewModel.Delete(model);
+                    }
+                }
+            }
+        }
+
+        private async void DeleteAll(object sender, RoutedEventArgs e)
+        {
+            var result = await ContentDialogHelper.CreateConfirmationDialog(
+                LocaleManager.Instance[LocaleKeys.DialogWarning],
+                LocaleManager.Instance[LocaleKeys.DialogModManagerDeletionAllWarningMessage],
+                LocaleManager.Instance[LocaleKeys.InputDialogYes],
+                LocaleManager.Instance[LocaleKeys.InputDialogNo],
+                LocaleManager.Instance[LocaleKeys.RyujinxConfirm]);
+
+            if (result == UserResult.Yes)
+            {
+                ViewModel.DeleteAll();
+            }
+        }
+
+        private void OpenLocation(object sender, RoutedEventArgs e)
+        {
+            if (sender is Button button)
+            {
+                if (button.DataContext is ModModel model)
+                {
+                    OpenHelper.OpenFolder(model.Path);
+                }
+            }
+        }
+
+        private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            foreach (var content in e.AddedItems)
+            {
+                if (content is ModModel model)
+                {
+                    var index = ViewModel.Mods.IndexOf(model);
+
+                    if (index != -1)
+                    {
+                        ViewModel.Mods[index].Enabled = true;
+                    }
+                }
+            }
+
+            foreach (var content in e.RemovedItems)
+            {
+                if (content is ModModel model)
+                {
+                    var index = ViewModel.Mods.IndexOf(model);
+
+                    if (index != -1)
+                    {
+                        ViewModel.Mods[index].Enabled = false;
+                    }
+                }
+            }
+        }
+    }
+}

src/Ryujinx.Common/Configuration/Mod.cs

@@ -0,0 +1,9 @@
+namespace Ryujinx.Common.Configuration
+{
+    public class Mod
+    {
+        public string Name { get; set; }
+        public string Path { get; set; }
+        public bool Enabled { get; set; }
+    }
+}

src/Ryujinx.Common/Configuration/ModMetadata.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace Ryujinx.Common.Configuration
+{
+    public struct ModMetadata
+    {
+        public List<Mod> Mods { get; set; }
+
+        public ModMetadata()
+        {
+            Mods = new List<Mod>();
+        }
+    }
+}

src/Ryujinx.Common/Configuration/ModMetadataJsonSerializerContext.cs

@@ -0,0 +1,10 @@
+using System.Text.Json.Serialization;
+
+namespace Ryujinx.Common.Configuration
+{
+    [JsonSourceGenerationOptions(WriteIndented = true)]
+    [JsonSerializable(typeof(ModMetadata))]
+    public partial class ModMetadataJsonSerializerContext : JsonSerializerContext
+    {
+    }
+}

src/Ryujinx.Common/Memory/StructArrayHelpers.cs

@@ -744,6 +744,17 @@ namespace Ryujinx.Common.Memory
         public Span<T> AsSpan() => MemoryMarshal.CreateSpan(ref _e0, Length);
     }
 
+    public struct Array65<T> : IArray<T> where T : unmanaged
+    {
+        T _e0;
+        Array64<T> _other;
+        public readonly int Length => 65;
+        public ref T this[int index] => ref AsSpan()[index];
+
+        [Pure]
+        public Span<T> AsSpan() => MemoryMarshal.CreateSpan(ref _e0, Length);
+    }
+
     public struct Array73<T> : IArray<T> where T : unmanaged
     {
         T _e0;

src/Ryujinx.Common/Memory/StructByteArrayHelpers.cs

@@ -63,6 +63,18 @@ namespace Ryujinx.Common.Memory
         public Span<byte> AsSpan() => MemoryMarshal.CreateSpan(ref _element, Size);
     }
 
+    [StructLayout(LayoutKind.Sequential, Size = Size, Pack = 1)]
+    public struct ByteArray3000 : IArray<byte>
+    {
+        private const int Size = 3000;
+
+        byte _element;
+
+        public readonly int Length => Size;
+        public ref byte this[int index] => ref AsSpan()[index];
+        public Span<byte> AsSpan() => MemoryMarshal.CreateSpan(ref _element, Size);
+    }
+
     [StructLayout(LayoutKind.Sequential, Size = Size, Pack = 1)]
     public struct ByteArray4096 : IArray<byte>
     {

src/Ryujinx.Graphics.GAL/HardwareInfo.cs

@@ -4,11 +4,13 @@ namespace Ryujinx.Graphics.GAL
     {
         public string GpuVendor { get; }
         public string GpuModel { get; }
+        public string GpuDriver { get; }
 
-        public HardwareInfo(string gpuVendor, string gpuModel)
+        public HardwareInfo(string gpuVendor, string gpuModel, string gpuDriver)
         {
             GpuVendor = gpuVendor;
             GpuModel = gpuModel;
+            GpuDriver = gpuDriver;
         }
     }
 }

src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs

@@ -121,7 +121,7 @@ namespace Ryujinx.Graphics.OpenGL
 
         public HardwareInfo GetHardwareInfo()
         {
-            return new HardwareInfo(GpuVendor, GpuRenderer);
+            return new HardwareInfo(GpuVendor, GpuRenderer, GpuVendor); // OpenGL does not provide a driver name, vendor name is closest analogue.
         }
 
         public PinnedSpan<byte> GetBufferData(BufferHandle buffer, int offset, int size)

src/Ryujinx.Graphics.Vulkan/BufferHolder.cs

@@ -4,6 +4,7 @@ using Silk.NET.Vulkan;
 using System;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
 using System.Threading;
 using VkBuffer = Silk.NET.Vulkan.Buffer;
 using VkFormat = Silk.NET.Vulkan.Format;
@@ -384,7 +385,7 @@ namespace Ryujinx.Graphics.Vulkan
             var baseData = new Span<byte>((void*)(_map + offset), size);
             var modData = _pendingData.AsSpan(offset, size);
 
-            StagingBufferReserved? newMirror = _gd.BufferManager.StagingBuffer.TryReserveData(cbs, size, (int)_gd.Capabilities.MinResourceAlignment);
+            StagingBufferReserved? newMirror = _gd.BufferManager.StagingBuffer.TryReserveData(cbs, size);
 
             if (newMirror != null)
             {
@@ -838,6 +839,11 @@ namespace Ryujinx.Graphics.Vulkan
             }
         }
 
+        public unsafe void SetDataUnchecked<T>(int offset, ReadOnlySpan<T> data) where T : unmanaged
+        {
+            SetDataUnchecked(offset, MemoryMarshal.AsBytes(data));
+        }
+
         public void SetDataInline(CommandBufferScoped cbs, Action endRenderPass, int dstOffset, ReadOnlySpan<byte> data)
         {
             if (!TryPushData(cbs, endRenderPass, dstOffset, data))

src/Ryujinx.Graphics.Vulkan/BufferManager.cs

@@ -9,6 +9,36 @@ using VkFormat = Silk.NET.Vulkan.Format;
 
 namespace Ryujinx.Graphics.Vulkan
 {
+    readonly struct ScopedTemporaryBuffer : IDisposable
+    {
+        private readonly BufferManager _bufferManager;
+        private readonly bool _isReserved;
+
+        public readonly BufferRange Range;
+        public readonly BufferHolder Holder;
+
+        public BufferHandle Handle => Range.Handle;
+        public int Offset => Range.Offset;
+
+        public ScopedTemporaryBuffer(BufferManager bufferManager, BufferHolder holder, BufferHandle handle, int offset, int size, bool isReserved)
+        {
+            _bufferManager = bufferManager;
+
+            Range = new BufferRange(handle, offset, size);
+            Holder = holder;
+
+            _isReserved = isReserved;
+        }
+
+        public void Dispose()
+        {
+            if (!_isReserved)
+            {
+                _bufferManager.Delete(Range.Handle);
+            }
+        }
+    }
+
     class BufferManager : IDisposable
     {
         public const MemoryPropertyFlags DefaultBufferMemoryFlags =
@@ -238,6 +268,23 @@ namespace Ryujinx.Graphics.Vulkan
             return Unsafe.As<ulong, BufferHandle>(ref handle64);
         }
 
+        public ScopedTemporaryBuffer ReserveOrCreate(VulkanRenderer gd, CommandBufferScoped cbs, int size)
+        {
+            StagingBufferReserved? result = StagingBuffer.TryReserveData(cbs, size);
+
+            if (result.HasValue)
+            {
+                return new ScopedTemporaryBuffer(this, result.Value.Buffer, StagingBuffer.Handle, result.Value.Offset, result.Value.Size, true);
+            }
+            else
+            {
+                // Create a temporary buffer.
+                BufferHandle handle = CreateWithHandle(gd, size, out BufferHolder holder);
+
+                return new ScopedTemporaryBuffer(this, holder, handle, 0, size, false);
+            }
+        }
+
         public unsafe MemoryRequirements GetHostImportedUsageRequirements(VulkanRenderer gd)
         {
             var usage = HostImportedBufferUsageFlags;
@@ -635,13 +682,14 @@ namespace Ryujinx.Graphics.Vulkan
         {
             if (disposing)
             {
+                StagingBuffer.Dispose();
+
                 foreach (BufferHolder buffer in _buffers)
                 {
                     buffer.Dispose();
                 }
 
                 _buffers.Clear();
-                StagingBuffer.Dispose();
             }
         }
 

src/Ryujinx.Graphics.Vulkan/Effects/FsrScalingFilter.cs

@@ -142,19 +142,18 @@ namespace Ryujinx.Graphics.Vulkan.Effects
             };
 
             int rangeSize = dimensionsBuffer.Length * sizeof(float);
-            var bufferHandle = _renderer.BufferManager.CreateWithHandle(_renderer, rangeSize);
+            using var buffer = _renderer.BufferManager.ReserveOrCreate(_renderer, cbs, rangeSize);
-            _renderer.BufferManager.SetData(bufferHandle, 0, dimensionsBuffer);
+            buffer.Holder.SetDataUnchecked(buffer.Offset, dimensionsBuffer);
 
-            ReadOnlySpan<float> sharpeningBuffer = stackalloc float[] { 1.5f - (Level * 0.01f * 1.5f) };
+            ReadOnlySpan<float> sharpeningBufferData = stackalloc float[] { 1.5f - (Level * 0.01f * 1.5f) };
-            var sharpeningBufferHandle = _renderer.BufferManager.CreateWithHandle(_renderer, sizeof(float));
+            using var sharpeningBuffer = _renderer.BufferManager.ReserveOrCreate(_renderer, cbs, sizeof(float));
-            _renderer.BufferManager.SetData(sharpeningBufferHandle, 0, sharpeningBuffer);
+            sharpeningBuffer.Holder.SetDataUnchecked(sharpeningBuffer.Offset, sharpeningBufferData);
 
             int threadGroupWorkRegionDim = 16;
             int dispatchX = (width + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
             int dispatchY = (height + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
 
-            var bufferRanges = new BufferRange(bufferHandle, 0, rangeSize);
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, buffer.Range) });
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, bufferRanges) });
             _pipeline.SetImage(0, _intermediaryTexture, FormatTable.ConvertRgba8SrgbToUnorm(view.Info.Format));
             _pipeline.DispatchCompute(dispatchX, dispatchY, 1);
             _pipeline.ComputeBarrier();
@@ -162,16 +161,12 @@ namespace Ryujinx.Graphics.Vulkan.Effects
             // Sharpening pass
             _pipeline.SetProgram(_sharpeningProgram);
             _pipeline.SetTextureAndSampler(ShaderStage.Compute, 1, _intermediaryTexture, _sampler);
-            var sharpeningRange = new BufferRange(sharpeningBufferHandle, 0, sizeof(float));
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(4, sharpeningBuffer.Range) });
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(4, sharpeningRange) });
             _pipeline.SetImage(0, destinationTexture);
             _pipeline.DispatchCompute(dispatchX, dispatchY, 1);
             _pipeline.ComputeBarrier();
 
             _pipeline.Finish();
-
-            _renderer.BufferManager.Delete(bufferHandle);
-            _renderer.BufferManager.Delete(sharpeningBufferHandle);
         }
     }
 }

src/Ryujinx.Graphics.Vulkan/Effects/FxaaPostProcessingEffect.cs

@@ -66,12 +66,11 @@ namespace Ryujinx.Graphics.Vulkan.Effects
 
             ReadOnlySpan<float> resolutionBuffer = stackalloc float[] { view.Width, view.Height };
             int rangeSize = resolutionBuffer.Length * sizeof(float);
-            var bufferHandle = _renderer.BufferManager.CreateWithHandle(_renderer, rangeSize);
+            using var buffer = _renderer.BufferManager.ReserveOrCreate(_renderer, cbs, rangeSize);
 
-            _renderer.BufferManager.SetData(bufferHandle, 0, resolutionBuffer);
+            buffer.Holder.SetDataUnchecked(buffer.Offset, resolutionBuffer);
 
-            var bufferRanges = new BufferRange(bufferHandle, 0, rangeSize);
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, buffer.Range) });
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, bufferRanges) });
 
             var dispatchX = BitUtils.DivRoundUp(view.Width, IPostProcessingEffect.LocalGroupSize);
             var dispatchY = BitUtils.DivRoundUp(view.Height, IPostProcessingEffect.LocalGroupSize);
@@ -79,7 +78,6 @@ namespace Ryujinx.Graphics.Vulkan.Effects
             _pipeline.SetImage(0, _texture, FormatTable.ConvertRgba8SrgbToUnorm(view.Info.Format));
             _pipeline.DispatchCompute(dispatchX, dispatchY, 1);
 
-            _renderer.BufferManager.Delete(bufferHandle);
             _pipeline.ComputeBarrier();
 
             _pipeline.Finish();

src/Ryujinx.Graphics.Vulkan/Effects/SmaaPostProcessingEffect.cs

@@ -215,11 +215,10 @@ namespace Ryujinx.Graphics.Vulkan.Effects
 
             ReadOnlySpan<float> resolutionBuffer = stackalloc float[] { view.Width, view.Height };
             int rangeSize = resolutionBuffer.Length * sizeof(float);
-            var bufferHandle = _renderer.BufferManager.CreateWithHandle(_renderer, rangeSize);
+            using var buffer = _renderer.BufferManager.ReserveOrCreate(_renderer, cbs, rangeSize);
 
-            _renderer.BufferManager.SetData(bufferHandle, 0, resolutionBuffer);
+            buffer.Holder.SetDataUnchecked(buffer.Offset, resolutionBuffer);
-            var bufferRanges = new BufferRange(bufferHandle, 0, rangeSize);
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, buffer.Range) });
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(2, bufferRanges) });
             _pipeline.SetImage(0, _edgeOutputTexture, FormatTable.ConvertRgba8SrgbToUnorm(view.Info.Format));
             _pipeline.DispatchCompute(dispatchX, dispatchY, 1);
             _pipeline.ComputeBarrier();
@@ -245,8 +244,6 @@ namespace Ryujinx.Graphics.Vulkan.Effects
 
             _pipeline.Finish();
 
-            _renderer.BufferManager.Delete(bufferHandle);
-
             return _outputTexture;
         }
 

src/Ryujinx.Graphics.Vulkan/HelperShader.cs

@@ -430,11 +430,11 @@ namespace Ryujinx.Graphics.Vulkan
                 (region[2], region[3]) = (region[3], region[2]);
             }
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, RegionBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, RegionBufferSize);
 
-            gd.BufferManager.SetData<float>(bufferHandle, 0, region);
+            buffer.Holder.SetDataUnchecked<float>(buffer.Offset, region);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, new BufferRange(bufferHandle, 0, RegionBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, buffer.Range) });
 
             Span<Viewport> viewports = stackalloc Viewport[1];
 
@@ -490,8 +490,6 @@ namespace Ryujinx.Graphics.Vulkan
             }
 
             _pipeline.Finish(gd, cbs);
-
-            gd.BufferManager.Delete(bufferHandle);
         }
 
         private void BlitDepthStencil(
@@ -527,11 +525,11 @@ namespace Ryujinx.Graphics.Vulkan
                 (region[2], region[3]) = (region[3], region[2]);
             }
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, RegionBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, RegionBufferSize);
 
-            gd.BufferManager.SetData<float>(bufferHandle, 0, region);
+            buffer.Holder.SetDataUnchecked<float>(buffer.Offset, region);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, new BufferRange(bufferHandle, 0, RegionBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, buffer.Range) });
 
             Span<Viewport> viewports = stackalloc Viewport[1];
 
@@ -582,8 +580,6 @@ namespace Ryujinx.Graphics.Vulkan
             }
 
             _pipeline.Finish(gd, cbs);
-
-            gd.BufferManager.Delete(bufferHandle);
         }
 
         private static TextureView CreateDepthOrStencilView(TextureView depthStencilTexture, DepthStencilMode depthStencilMode)
@@ -681,11 +677,11 @@ namespace Ryujinx.Graphics.Vulkan
 
             _pipeline.SetCommandBuffer(cbs);
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ClearColorBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ClearColorBufferSize);
 
-            gd.BufferManager.SetData(bufferHandle, 0, clearColor);
+            buffer.Holder.SetDataUnchecked(buffer.Offset, clearColor);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, new BufferRange(bufferHandle, 0, ClearColorBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, buffer.Range) });
 
             Span<Viewport> viewports = stackalloc Viewport[1];
 
@@ -721,8 +717,6 @@ namespace Ryujinx.Graphics.Vulkan
             _pipeline.SetPrimitiveTopology(PrimitiveTopology.TriangleStrip);
             _pipeline.Draw(4, 1, 0, 0);
             _pipeline.Finish();
-
-            gd.BufferManager.Delete(bufferHandle);
         }
 
         public void Clear(
@@ -745,11 +739,11 @@ namespace Ryujinx.Graphics.Vulkan
 
             _pipeline.SetCommandBuffer(cbs);
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ClearColorBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ClearColorBufferSize);
 
-            gd.BufferManager.SetData<float>(bufferHandle, 0, stackalloc float[] { depthValue });
+            buffer.Holder.SetDataUnchecked<float>(buffer.Offset, stackalloc float[] { depthValue });
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, new BufferRange(bufferHandle, 0, ClearColorBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(1, buffer.Range) });
 
             Span<Viewport> viewports = stackalloc Viewport[1];
 
@@ -771,8 +765,6 @@ namespace Ryujinx.Graphics.Vulkan
             _pipeline.SetStencilTest(CreateStencilTestDescriptor(stencilMask != 0, stencilValue, 0xff, stencilMask));
             _pipeline.Draw(4, 1, 0, 0);
             _pipeline.Finish();
-
-            gd.BufferManager.Delete(bufferHandle);
         }
 
         public void DrawTexture(
@@ -878,13 +870,13 @@ namespace Ryujinx.Graphics.Vulkan
                 shaderParams[2] = size;
                 shaderParams[3] = srcOffset;
 
-                var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize);
+                using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
 
-                gd.BufferManager.SetData<int>(bufferHandle, 0, shaderParams);
+                buffer.Holder.SetDataUnchecked<int>(buffer.Offset, shaderParams);
 
                 _pipeline.SetCommandBuffer(cbs);
 
-                _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(bufferHandle, 0, ParamsBufferSize)) });
+                _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, buffer.Range) });
 
                 Span<Auto<DisposableBuffer>> sbRanges = new Auto<DisposableBuffer>[2];
 
@@ -896,8 +888,6 @@ namespace Ryujinx.Graphics.Vulkan
                 _pipeline.SetProgram(_programStrideChange);
                 _pipeline.DispatchCompute(1 + elems / ConvertElementsPerWorkgroup, 1, 1);
 
-                gd.BufferManager.Delete(bufferHandle);
-
                 _pipeline.Finish(gd, cbs);
             }
             else
@@ -1025,7 +1015,7 @@ namespace Ryujinx.Graphics.Vulkan
         {
             const int ParamsBufferSize = 4;
 
-            Span<int> shaderParams = stackalloc int[sizeof(int)];
+            Span<int> shaderParams = stackalloc int[ParamsBufferSize / sizeof(int)];
 
             int srcBpp = src.Info.BytesPerPixel;
             int dstBpp = dst.Info.BytesPerPixel;
@@ -1034,9 +1024,9 @@ namespace Ryujinx.Graphics.Vulkan
 
             shaderParams[0] = BitOperations.Log2((uint)ratio);
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
 
-            gd.BufferManager.SetData<int>(bufferHandle, 0, shaderParams);
+            buffer.Holder.SetDataUnchecked<int>(buffer.Offset, shaderParams);
 
             TextureView.InsertImageBarrier(
                 gd.Api,
@@ -1064,7 +1054,7 @@ namespace Ryujinx.Graphics.Vulkan
             var srcFormat = GetFormat(componentSize, srcBpp / componentSize);
             var dstFormat = GetFormat(componentSize, dstBpp / componentSize);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(bufferHandle, 0, ParamsBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, buffer.Range) });
 
             for (int l = 0; l < levels; l++)
             {
@@ -1093,8 +1083,6 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
 
-            gd.BufferManager.Delete(bufferHandle);
-
             _pipeline.Finish(gd, cbs);
 
             TextureView.InsertImageBarrier(
@@ -1128,9 +1116,9 @@ namespace Ryujinx.Graphics.Vulkan
             (shaderParams[0], shaderParams[1]) = GetSampleCountXYLog2(samples);
             (shaderParams[2], shaderParams[3]) = GetSampleCountXYLog2((int)TextureStorage.ConvertToSampleCountFlags(gd.Capabilities.SupportedSampleCounts, (uint)samples));
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
 
-            gd.BufferManager.SetData<int>(bufferHandle, 0, shaderParams);
+            buffer.Holder.SetDataUnchecked<int>(buffer.Offset, shaderParams);
 
             TextureView.InsertImageBarrier(
                 gd.Api,
@@ -1147,7 +1135,7 @@ namespace Ryujinx.Graphics.Vulkan
                 1);
 
             _pipeline.SetCommandBuffer(cbs);
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(bufferHandle, 0, ParamsBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, buffer.Range) });
 
             if (isDepthOrStencil)
             {
@@ -1226,8 +1214,6 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
 
-            gd.BufferManager.Delete(bufferHandle);
-
             _pipeline.Finish(gd, cbs);
 
             TextureView.InsertImageBarrier(
@@ -1261,9 +1247,9 @@ namespace Ryujinx.Graphics.Vulkan
             (shaderParams[0], shaderParams[1]) = GetSampleCountXYLog2(samples);
             (shaderParams[2], shaderParams[3]) = GetSampleCountXYLog2((int)TextureStorage.ConvertToSampleCountFlags(gd.Capabilities.SupportedSampleCounts, (uint)samples));
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
 
-            gd.BufferManager.SetData<int>(bufferHandle, 0, shaderParams);
+            buffer.Holder.SetDataUnchecked<int>(buffer.Offset, shaderParams);
 
             TextureView.InsertImageBarrier(
                 gd.Api,
@@ -1299,7 +1285,7 @@ namespace Ryujinx.Graphics.Vulkan
             _pipeline.SetViewports(viewports);
             _pipeline.SetPrimitiveTopology(PrimitiveTopology.TriangleStrip);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(bufferHandle, 0, ParamsBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, buffer.Range) });
 
             if (isDepthOrStencil)
             {
@@ -1364,8 +1350,6 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
 
-            gd.BufferManager.Delete(bufferHandle);
-
             _pipeline.Finish(gd, cbs);
 
             TextureView.InsertImageBarrier(
@@ -1616,10 +1600,11 @@ namespace Ryujinx.Graphics.Vulkan
 
             pattern.OffsetIndex.CopyTo(shaderParams[..pattern.OffsetIndex.Length]);
 
-            var patternBufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize, out var patternBuffer);
+            using var patternScoped = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
+            var patternBuffer = patternScoped.Holder;
             var patternBufferAuto = patternBuffer.GetBuffer();
 
-            gd.BufferManager.SetData<int>(patternBufferHandle, 0, shaderParams);
+            patternBuffer.SetDataUnchecked<int>(patternScoped.Offset, shaderParams);
 
             _pipeline.SetCommandBuffer(cbs);
 
@@ -1635,7 +1620,8 @@ namespace Ryujinx.Graphics.Vulkan
                 indirectDataSize);
 
             _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, drawCountBufferAligned) });
-            _pipeline.SetStorageBuffers(1, new[] { srcIndirectBuffer.GetBuffer(), dstIndirectBuffer.GetBuffer(), patternBuffer.GetBuffer() });
+            _pipeline.SetStorageBuffers(1, new[] { srcIndirectBuffer.GetBuffer(), dstIndirectBuffer.GetBuffer() });
+            _pipeline.SetStorageBuffers(stackalloc[] { new BufferAssignment(3, patternScoped.Range) });
 
             _pipeline.SetProgram(_programConvertIndirectData);
             _pipeline.DispatchCompute(1, 1, 1);
@@ -1643,12 +1629,12 @@ namespace Ryujinx.Graphics.Vulkan
             BufferHolder.InsertBufferBarrier(
                 gd,
                 cbs.CommandBuffer,
-                patternBufferAuto.Get(cbs, ParamsIndirectDispatchOffset, ParamsIndirectDispatchSize).Value,
+                patternBufferAuto.Get(cbs, patternScoped.Offset + ParamsIndirectDispatchOffset, ParamsIndirectDispatchSize).Value,
                 AccessFlags.ShaderWriteBit,
                 AccessFlags.IndirectCommandReadBit,
                 PipelineStageFlags.ComputeShaderBit,
                 PipelineStageFlags.DrawIndirectBit,
-                ParamsIndirectDispatchOffset,
+                patternScoped.Offset + ParamsIndirectDispatchOffset,
                 ParamsIndirectDispatchSize);
 
             BufferHolder.InsertBufferBarrier(
@@ -1662,11 +1648,11 @@ namespace Ryujinx.Graphics.Vulkan
                 0,
                 convertedCount * outputIndexSize);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(patternBufferHandle, 0, ParamsBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(patternScoped.Handle, patternScoped.Offset, ParamsBufferSize)) });
             _pipeline.SetStorageBuffers(1, new[] { srcIndexBuffer.GetBuffer(), dstIndexBuffer.GetBuffer() });
 
             _pipeline.SetProgram(_programConvertIndexBuffer);
-            _pipeline.DispatchComputeIndirect(patternBufferAuto, ParamsIndirectDispatchOffset);
+            _pipeline.DispatchComputeIndirect(patternBufferAuto, patternScoped.Offset + ParamsIndirectDispatchOffset);
 
             BufferHolder.InsertBufferBarrier(
                 gd,
@@ -1679,8 +1665,6 @@ namespace Ryujinx.Graphics.Vulkan
                 0,
                 convertedCount * outputIndexSize);
 
-            gd.BufferManager.Delete(patternBufferHandle);
-
             _pipeline.Finish(gd, cbs);
         }
 
@@ -1726,13 +1710,13 @@ namespace Ryujinx.Graphics.Vulkan
             shaderParams[0] = pixelCount;
             shaderParams[1] = dstOffset;
 
-            var bufferHandle = gd.BufferManager.CreateWithHandle(gd, ParamsBufferSize);
+            using var buffer = gd.BufferManager.ReserveOrCreate(gd, cbs, ParamsBufferSize);
 
-            gd.BufferManager.SetData<int>(bufferHandle, 0, shaderParams);
+            buffer.Holder.SetDataUnchecked<int>(buffer.Offset, shaderParams);
 
             _pipeline.SetCommandBuffer(cbs);
 
-            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, new BufferRange(bufferHandle, 0, ParamsBufferSize)) });
+            _pipeline.SetUniformBuffers(stackalloc[] { new BufferAssignment(0, buffer.Range) });
 
             Span<Auto<DisposableBuffer>> sbRanges = new Auto<DisposableBuffer>[2];
 
@@ -1744,8 +1728,6 @@ namespace Ryujinx.Graphics.Vulkan
             _pipeline.SetProgram(_programConvertD32S8ToD24S8);
             _pipeline.DispatchCompute(1 + inSize / ConvertElementsPerWorkgroup, 1, 1);
 
-            gd.BufferManager.Delete(bufferHandle);
-
             _pipeline.Finish(gd, cbs);
 
             BufferHolder.InsertBufferBarrier(

src/Ryujinx.Graphics.Vulkan/Queries/CounterQueue.cs

@@ -67,9 +67,18 @@ namespace Ryujinx.Graphics.Vulkan.Queries
             lock (_queryPool)
             {
                 count = Math.Min(count, _queryPool.Count);
-                for (int i = 0; i < count; i++)
+
+                if (count > 0)
                 {
-                    _queryPool.ElementAt(i).PoolReset(cmd, ResetSequence);
+                    foreach (BufferedQuery query in _queryPool)
+                    {
+                        query.PoolReset(cmd, ResetSequence);
+
+                        if (--count == 0)
+                        {
+                            break;
+                        }
+                    }
                 }
             }
         }

src/Ryujinx.Graphics.Vulkan/StagingBuffer.cs

@@ -1,5 +1,6 @@
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
+using Ryujinx.Graphics.GAL;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -29,6 +30,9 @@ namespace Ryujinx.Graphics.Vulkan
 
         private readonly VulkanRenderer _gd;
         private readonly BufferHolder _buffer;
+        private readonly int _resourceAlignment;
+
+        public readonly BufferHandle Handle;
 
         private readonly struct PendingCopy
         {
@@ -48,9 +52,10 @@ namespace Ryujinx.Graphics.Vulkan
         public StagingBuffer(VulkanRenderer gd, BufferManager bufferManager)
         {
             _gd = gd;
-            _buffer = bufferManager.Create(gd, BufferSize);
+            Handle = bufferManager.CreateWithHandle(gd, BufferSize, out _buffer);
             _pendingCopies = new Queue<PendingCopy>();
             _freeSize = BufferSize;
+            _resourceAlignment = (int)gd.Capabilities.MinResourceAlignment;
         }
 
         public void PushData(CommandBufferPool cbp, CommandBufferScoped? cbs, Action endRenderPass, BufferHolder dst, int dstOffset, ReadOnlySpan<byte> data)
@@ -197,7 +202,7 @@ namespace Ryujinx.Graphics.Vulkan
         /// Reserve a range on the staging buffer for the current command buffer and upload data to it.
         /// </summary>
         /// <param name="cbs">Command buffer to reserve the data on</param>
-        /// <param name="data">The data to upload</param>
+        /// <param name="size">The minimum size the reserved data requires</param>
         /// <param name="alignment">The required alignment for the buffer offset</param>
         /// <returns>The reserved range of the staging buffer</returns>
         public unsafe StagingBufferReserved? TryReserveData(CommandBufferScoped cbs, int size, int alignment)
@@ -223,6 +228,18 @@ namespace Ryujinx.Graphics.Vulkan
             return ReserveDataImpl(cbs, size, alignment);
         }
 
+        /// <summary>
+        /// Reserve a range on the staging buffer for the current command buffer and upload data to it.
+        /// Uses the most permissive byte alignment.
+        /// </summary>
+        /// <param name="cbs">Command buffer to reserve the data on</param>
+        /// <param name="size">The minimum size the reserved data requires</param>
+        /// <returns>The reserved range of the staging buffer</returns>
+        public unsafe StagingBufferReserved? TryReserveData(CommandBufferScoped cbs, int size)
+        {
+            return TryReserveData(cbs, size, _resourceAlignment);
+        }
+
         private bool WaitFreeCompleted(CommandBufferPool cbp)
         {
             if (_pendingCopies.TryPeek(out var pc))
@@ -263,7 +280,7 @@ namespace Ryujinx.Graphics.Vulkan
         {
             if (disposing)
             {
-                _buffer.Dispose();
+                _gd.BufferManager.Delete(Handle);
 
                 while (_pendingCopies.TryDequeue(out var pc))
                 {

src/Ryujinx.Graphics.Vulkan/VulkanPhysicalDevice.cs

@@ -58,6 +58,33 @@ namespace Ryujinx.Graphics.Vulkan
 
         public bool IsDeviceExtensionPresent(string extension) => DeviceExtensions.Contains(extension);
 
+        public unsafe bool TryGetPhysicalDeviceDriverPropertiesKHR(Vk api, out PhysicalDeviceDriverPropertiesKHR res)
+        {
+            if (!IsDeviceExtensionPresent("VK_KHR_driver_properties"))
+            {
+                res = default;
+
+                return false;
+            }
+
+            PhysicalDeviceDriverPropertiesKHR physicalDeviceDriverProperties = new()
+            {
+                SType = StructureType.PhysicalDeviceDriverPropertiesKhr
+            };
+
+            PhysicalDeviceProperties2 physicalDeviceProperties2 = new()
+            {
+                SType = StructureType.PhysicalDeviceProperties2,
+                PNext = &physicalDeviceDriverProperties
+            };
+
+            api.GetPhysicalDeviceProperties2(PhysicalDevice, &physicalDeviceProperties2);
+
+            res = physicalDeviceDriverProperties;
+
+            return true;
+        }
+
         public DeviceInfo ToDeviceInfo()
         {
             return new DeviceInfo(

src/Ryujinx.Graphics.Vulkan/VulkanRenderer.cs

@@ -84,6 +84,7 @@ namespace Ryujinx.Graphics.Vulkan
         internal bool IsTBDR { get; private set; }
         internal bool IsSharedMemory { get; private set; }
         public string GpuVendor { get; private set; }
+        public string GpuDriver { get; private set; }
         public string GpuRenderer { get; private set; }
         public string GpuVersion { get; private set; }
 
@@ -636,7 +637,7 @@ namespace Ryujinx.Graphics.Vulkan
 
         public HardwareInfo GetHardwareInfo()
         {
-            return new HardwareInfo(GpuVendor, GpuRenderer);
+            return new HardwareInfo(GpuVendor, GpuRenderer, GpuDriver);
         }
 
         /// <summary>
@@ -693,6 +694,8 @@ namespace Ryujinx.Graphics.Vulkan
         {
             var properties = _physicalDevice.PhysicalDeviceProperties;
 
+            var hasDriverProperties = _physicalDevice.TryGetPhysicalDeviceDriverPropertiesKHR(Api, out var driverProperties);
+
             string vendorName = VendorUtils.GetNameFromId(properties.VendorID);
 
             Vendor = VendorUtils.FromId(properties.VendorID);
@@ -707,6 +710,7 @@ namespace Ryujinx.Graphics.Vulkan
                 Vendor == Vendor.ImgTec;
 
             GpuVendor = vendorName;
+            GpuDriver = hasDriverProperties ? Marshal.PtrToStringAnsi((IntPtr)driverProperties.DriverName) : vendorName; // Fall back to vendor name if driver name isn't available.
             GpuRenderer = Marshal.PtrToStringAnsi((IntPtr)properties.DeviceName);
             GpuVersion = $"Vulkan v{ParseStandardVulkanVersion(properties.ApiVersion)}, Driver v{ParseDriverVersion(ref properties)}";
 

src/Ryujinx.HLE/FileSystem/VirtualFileSystem.cs

@@ -186,7 +186,12 @@ namespace Ryujinx.HLE.FileSystem
 
         public void InitializeFsServer(LibHac.Horizon horizon, out HorizonClient fsServerClient)
         {
-            LocalFileSystem serverBaseFs = new(AppDataManager.BaseDirPath);
+            LocalFileSystem serverBaseFs = new(useUnixTimeStamps: true);
+            Result result = serverBaseFs.Initialize(AppDataManager.BaseDirPath, LocalFileSystem.PathMode.DefaultCaseSensitivity, ensurePathExists: true);
+            if (result.IsFailure())
+            {
+                throw new HorizonResultException(result, "Error creating LocalFileSystem.");
+            }
 
             fsServerClient = horizon.CreatePrivilegedHorizonClient();
             var fsServer = new FileSystemServer(fsServerClient);

src/Ryujinx.HLE/HOS/ModLoader.cs

@@ -7,6 +7,7 @@ using LibHac.Tools.FsSystem;
 using LibHac.Tools.FsSystem.RomFs;
 using Ryujinx.Common.Configuration;
 using Ryujinx.Common.Logging;
+using Ryujinx.Common.Utilities;
 using Ryujinx.HLE.HOS.Kernel.Process;
 using Ryujinx.HLE.Loaders.Executables;
 using Ryujinx.HLE.Loaders.Mods;
@@ -37,15 +38,19 @@ namespace Ryujinx.HLE.HOS
         private const string AmsNroPatchDir = "nro_patches";
         private const string AmsKipPatchDir = "kip_patches";
 
+        private static readonly ModMetadataJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
+
         public readonly struct Mod<T> where T : FileSystemInfo
         {
             public readonly string Name;
             public readonly T Path;
+            public readonly bool Enabled;
 
-            public Mod(string name, T path)
+            public Mod(string name, T path, bool enabled)
             {
                 Name = name;
                 Path = path;
+                Enabled = enabled;
             }
         }
 
@@ -67,7 +72,7 @@ namespace Ryujinx.HLE.HOS
             }
         }
 
-        // Title dependent mods
+        // Application dependent mods
         public class ModCache
         {
             public List<Mod<FileInfo>> RomfsContainers { get; }
@@ -88,7 +93,7 @@ namespace Ryujinx.HLE.HOS
             }
         }
 
-        // Title independent mods
+        // Application independent mods
         private class PatchCache
         {
             public List<Mod<DirectoryInfo>> NsoPatches { get; }
@@ -107,7 +112,7 @@ namespace Ryujinx.HLE.HOS
             }
         }
 
-        private readonly Dictionary<ulong, ModCache> _appMods; // key is TitleId
+        private readonly Dictionary<ulong, ModCache> _appMods; // key is ApplicationId
         private PatchCache _patches;
 
         private static readonly EnumerationOptions _dirEnumOptions;
@@ -153,26 +158,52 @@ namespace Ryujinx.HLE.HOS
             return modsDir.FullName;
         }
 
-        private static DirectoryInfo FindTitleDir(DirectoryInfo contentsDir, string titleId)
+        private static DirectoryInfo FindApplicationDir(DirectoryInfo contentsDir, string applicationId)
-            => contentsDir.EnumerateDirectories(titleId, _dirEnumOptions).FirstOrDefault();
+            => contentsDir.EnumerateDirectories(applicationId, _dirEnumOptions).FirstOrDefault();
 
-        private static void AddModsFromDirectory(ModCache mods, DirectoryInfo dir, string titleId)
+        private static void AddModsFromDirectory(ModCache mods, DirectoryInfo dir, ModMetadata modMetadata)
         {
             System.Text.StringBuilder types = new();
 
             foreach (var modDir in dir.EnumerateDirectories())
             {
                 types.Clear();
-                Mod<DirectoryInfo> mod = new("", null);
+                Mod<DirectoryInfo> mod = new("", null, true);
 
                 if (StrEquals(RomfsDir, modDir.Name))
                 {
-                    mods.RomfsDirs.Add(mod = new Mod<DirectoryInfo>(dir.Name, modDir));
+                    bool enabled;
+
+                    try
+                    {
+                        var modData = modMetadata.Mods.Find(x => modDir.FullName.Contains(x.Path));
+                        enabled = modData.Enabled;
+                    }
+                    catch
+                    {
+                        // Mod is not in the list yet. New mods should be enabled by default.
+                        enabled = true;
+                    }
+
+                    mods.RomfsDirs.Add(mod = new Mod<DirectoryInfo>(dir.Name, modDir, enabled));
                     types.Append('R');
                 }
                 else if (StrEquals(ExefsDir, modDir.Name))
                 {
-                    mods.ExefsDirs.Add(mod = new Mod<DirectoryInfo>(dir.Name, modDir));
+                    bool enabled;
+
+                    try
+                    {
+                        var modData = modMetadata.Mods.Find(x => modDir.FullName.Contains(x.Path));
+                        enabled = modData.Enabled;
+                    }
+                    catch
+                    {
+                        // Mod is not in the list yet. New mods should be enabled by default.
+                        enabled = true;
+                    }
+
+                    mods.ExefsDirs.Add(mod = new Mod<DirectoryInfo>(dir.Name, modDir, enabled));
                     types.Append('E');
                 }
                 else if (StrEquals(CheatDir, modDir.Name))
@@ -181,7 +212,7 @@ namespace Ryujinx.HLE.HOS
                 }
                 else
                 {
-                    AddModsFromDirectory(mods, modDir, titleId);
+                    AddModsFromDirectory(mods, modDir, modMetadata);
                 }
 
                 if (types.Length > 0)
@@ -191,18 +222,18 @@ namespace Ryujinx.HLE.HOS
             }
         }
 
-        public static string GetTitleDir(string modsBasePath, string titleId)
+        public static string GetApplicationDir(string modsBasePath, string applicationId)
         {
             var contentsDir = new DirectoryInfo(Path.Combine(modsBasePath, AmsContentsDir));
-            var titleModsPath = FindTitleDir(contentsDir, titleId);
+            var applicationModsPath = FindApplicationDir(contentsDir, applicationId);
 
-            if (titleModsPath == null)
+            if (applicationModsPath == null)
             {
-                Logger.Info?.Print(LogClass.ModLoader, $"Creating mods directory for Title {titleId.ToUpper()}");
+                Logger.Info?.Print(LogClass.ModLoader, $"Creating mods directory for Application {applicationId.ToUpper()}");
-                titleModsPath = contentsDir.CreateSubdirectory(titleId);
+                applicationModsPath = contentsDir.CreateSubdirectory(applicationId);
             }
 
-            return titleModsPath.FullName;
+            return applicationModsPath.FullName;
         }
 
         // Static Query Methods
@@ -238,47 +269,68 @@ namespace Ryujinx.HLE.HOS
 
             foreach (var modDir in patchDir.EnumerateDirectories())
             {
-                patches.Add(new Mod<DirectoryInfo>(modDir.Name, modDir));
+                patches.Add(new Mod<DirectoryInfo>(modDir.Name, modDir, true));
                 Logger.Info?.Print(LogClass.ModLoader, $"Found {type} patch '{modDir.Name}'");
             }
         }
 
-        private static void QueryTitleDir(ModCache mods, DirectoryInfo titleDir)
+        private static void QueryApplicationDir(ModCache mods, DirectoryInfo applicationDir, ulong applicationId)
         {
-            if (!titleDir.Exists)
+            if (!applicationDir.Exists)
             {
                 return;
             }
 
-            var fsFile = new FileInfo(Path.Combine(titleDir.FullName, RomfsContainer));
+            string modJsonPath = Path.Combine(AppDataManager.GamesDirPath, applicationId.ToString("x16"), "mods.json");
-            if (fsFile.Exists)
+            ModMetadata modMetadata = new();
+
+            if (File.Exists(modJsonPath))
             {
-                mods.RomfsContainers.Add(new Mod<FileInfo>($"<{titleDir.Name} RomFs>", fsFile));
+                try
+                {
+                    modMetadata = JsonHelper.DeserializeFromFile(modJsonPath, _serializerContext.ModMetadata);
+                }
+                catch
+                {
+                    Logger.Warning?.Print(LogClass.ModLoader, $"Failed to deserialize mod data for {applicationId:X16} at {modJsonPath}");
+                }
             }
 
-            fsFile = new FileInfo(Path.Combine(titleDir.FullName, ExefsContainer));
+            var fsFile = new FileInfo(Path.Combine(applicationDir.FullName, RomfsContainer));
             if (fsFile.Exists)
             {
-                mods.ExefsContainers.Add(new Mod<FileInfo>($"<{titleDir.Name} ExeFs>", fsFile));
+                var modData = modMetadata.Mods.Find(x => fsFile.FullName.Contains(x.Path));
+                var enabled = modData == null || modData.Enabled;
+
+                mods.RomfsContainers.Add(new Mod<FileInfo>($"<{applicationDir.Name} RomFs>", fsFile, enabled));
             }
 
-            AddModsFromDirectory(mods, titleDir, titleDir.Name);
+            fsFile = new FileInfo(Path.Combine(applicationDir.FullName, ExefsContainer));
+            if (fsFile.Exists)
+            {
+                var modData = modMetadata.Mods.Find(x => fsFile.FullName.Contains(x.Path));
+                var enabled = modData == null || modData.Enabled;
+
+                mods.ExefsContainers.Add(new Mod<FileInfo>($"<{applicationDir.Name} ExeFs>", fsFile, enabled));
+            }
+
+            AddModsFromDirectory(mods, applicationDir, modMetadata);
         }
 
-        public static void QueryContentsDir(ModCache mods, DirectoryInfo contentsDir, ulong titleId)
+        public static void QueryContentsDir(ModCache mods, DirectoryInfo contentsDir, ulong applicationId)
         {
             if (!contentsDir.Exists)
             {
                 return;
             }
 
-            Logger.Info?.Print(LogClass.ModLoader, $"Searching mods for {((titleId & 0x1000) != 0 ? "DLC" : "Title")} {titleId:X16}");
+            Logger.Info?.Print(LogClass.ModLoader, $"Searching mods for {((applicationId & 0x1000) != 0 ? "DLC" : "Application")} {applicationId:X16}");
 
-            var titleDir = FindTitleDir(contentsDir, $"{titleId:x16}");
+            var applicationDir = FindApplicationDir(contentsDir, $"{applicationId:x16}");
 
-            if (titleDir != null)
+            if (applicationDir != null)
             {
-                QueryTitleDir(mods, titleDir);
+                QueryApplicationDir(mods, applicationDir, applicationId);
             }
         }
 
@@ -387,9 +439,9 @@ namespace Ryujinx.HLE.HOS
             {
                 if (IsContentsDir(searchDir.Name))
                 {
-                    foreach ((ulong titleId, ModCache cache) in modCaches)
+                    foreach ((ulong applicationId, ModCache cache) in modCaches)
                     {
-                        QueryContentsDir(cache, searchDir, titleId);
+                        QueryContentsDir(cache, searchDir, applicationId);
                     }
 
                     return true;
@@ -410,7 +462,7 @@ namespace Ryujinx.HLE.HOS
                 if (!searchDir.Exists)
                 {
                     Logger.Warning?.Print(LogClass.ModLoader, $"Mod Search Dir '{searchDir.FullName}' doesn't exist");
-                    continue;
+                    return;
                 }
 
                 if (!TryQuery(searchDir, patches, modCaches))
@@ -425,21 +477,21 @@ namespace Ryujinx.HLE.HOS
             patches.Initialized = true;
         }
 
-        public void CollectMods(IEnumerable<ulong> titles, params string[] searchDirPaths)
+        public void CollectMods(IEnumerable<ulong> applications, params string[] searchDirPaths)
         {
             Clear();
 
-            foreach (ulong titleId in titles)
+            foreach (ulong applicationId in applications)
             {
-                _appMods[titleId] = new ModCache();
+                _appMods[applicationId] = new ModCache();
             }
 
             CollectMods(_appMods, _patches, searchDirPaths);
         }
 
-        internal IStorage ApplyRomFsMods(ulong titleId, IStorage baseStorage)
+        internal IStorage ApplyRomFsMods(ulong applicationId, IStorage baseStorage)
         {
-            if (!_appMods.TryGetValue(titleId, out ModCache mods) || mods.RomfsDirs.Count + mods.RomfsContainers.Count == 0)
+            if (!_appMods.TryGetValue(applicationId, out ModCache mods) || mods.RomfsDirs.Count + mods.RomfsContainers.Count == 0)
             {
                 return baseStorage;
             }
@@ -448,11 +500,16 @@ namespace Ryujinx.HLE.HOS
             var builder = new RomFsBuilder();
             int count = 0;
 
-            Logger.Info?.Print(LogClass.ModLoader, $"Applying RomFS mods for Title {titleId:X16}");
+            Logger.Info?.Print(LogClass.ModLoader, $"Applying RomFS mods for Application {applicationId:X16}");
 
             // Prioritize loose files first
             foreach (var mod in mods.RomfsDirs)
             {
+                if (!mod.Enabled)
+                {
+                    continue;
+                }
+
                 using (IFileSystem fs = new LocalFileSystem(mod.Path.FullName))
                 {
                     AddFiles(fs, mod.Name, fileSet, builder);
@@ -463,7 +520,12 @@ namespace Ryujinx.HLE.HOS
             // Then files inside images
             foreach (var mod in mods.RomfsContainers)
             {
-                Logger.Info?.Print(LogClass.ModLoader, $"Found 'romfs.bin' for Title {titleId:X16}");
+                if (!mod.Enabled)
+                {
+                    continue;
+                }
+
+                Logger.Info?.Print(LogClass.ModLoader, $"Found 'romfs.bin' for Application {applicationId:X16}");
                 using (IFileSystem fs = new RomFsFileSystem(mod.Path.OpenRead().AsStorage()))
                 {
                     AddFiles(fs, mod.Name, fileSet, builder);
@@ -519,9 +581,9 @@ namespace Ryujinx.HLE.HOS
             }
         }
 
-        internal bool ReplaceExefsPartition(ulong titleId, ref IFileSystem exefs)
+        internal bool ReplaceExefsPartition(ulong applicationId, ref IFileSystem exefs)
         {
-            if (!_appMods.TryGetValue(titleId, out ModCache mods) || mods.ExefsContainers.Count == 0)
+            if (!_appMods.TryGetValue(applicationId, out ModCache mods) || mods.ExefsContainers.Count == 0)
             {
                 return false;
             }
@@ -549,7 +611,7 @@ namespace Ryujinx.HLE.HOS
             public bool Modified => (Stubs.Data | Replaces.Data) != 0;
         }
 
-        internal ModLoadResult ApplyExefsMods(ulong titleId, NsoExecutable[] nsos)
+        internal ModLoadResult ApplyExefsMods(ulong applicationId, NsoExecutable[] nsos)
         {
             ModLoadResult modLoadResult = new()
             {
@@ -557,7 +619,7 @@ namespace Ryujinx.HLE.HOS
                 Replaces = new BitVector32(),
             };
 
-            if (!_appMods.TryGetValue(titleId, out ModCache mods) || mods.ExefsDirs.Count == 0)
+            if (!_appMods.TryGetValue(applicationId, out ModCache mods) || mods.ExefsDirs.Count == 0)
             {
                 return modLoadResult;
             }
@@ -571,6 +633,11 @@ namespace Ryujinx.HLE.HOS
 
             foreach (var mod in exeMods)
             {
+                if (!mod.Enabled)
+                {
+                    continue;
+                }
+
                 for (int i = 0; i < ProcessConst.ExeFsPrefixes.Length; ++i)
                 {
                     var nsoName = ProcessConst.ExeFsPrefixes[i];
@@ -637,11 +704,11 @@ namespace Ryujinx.HLE.HOS
             ApplyProgramPatches(nroPatches, 0, nro);
         }
 
-        internal bool ApplyNsoPatches(ulong titleId, params IExecutable[] programs)
+        internal bool ApplyNsoPatches(ulong applicationId, params IExecutable[] programs)
         {
             IEnumerable<Mod<DirectoryInfo>> nsoMods = _patches.NsoPatches;
 
-            if (_appMods.TryGetValue(titleId, out ModCache mods))
+            if (_appMods.TryGetValue(applicationId, out ModCache mods))
             {
                 nsoMods = nsoMods.Concat(mods.ExefsDirs);
             }
@@ -651,7 +718,7 @@ namespace Ryujinx.HLE.HOS
             return ApplyProgramPatches(nsoMods, 0x100, programs);
         }
 
-        internal void LoadCheats(ulong titleId, ProcessTamperInfo tamperInfo, TamperMachine tamperMachine)
+        internal void LoadCheats(ulong applicationId, ProcessTamperInfo tamperInfo, TamperMachine tamperMachine)
         {
             if (tamperInfo?.BuildIds == null || tamperInfo.CodeAddresses == null)
             {
@@ -660,9 +727,9 @@ namespace Ryujinx.HLE.HOS
                 return;
             }
 
-            Logger.Info?.Print(LogClass.ModLoader, $"Build ids found for title {titleId:X16}:\n    {String.Join("\n    ", tamperInfo.BuildIds)}");
+            Logger.Info?.Print(LogClass.ModLoader, $"Build ids found for application {applicationId:X16}:\n    {String.Join("\n    ", tamperInfo.BuildIds)}");
 
-            if (!_appMods.TryGetValue(titleId, out ModCache mods) || mods.Cheats.Count == 0)
+            if (!_appMods.TryGetValue(applicationId, out ModCache mods) || mods.Cheats.Count == 0)
             {
                 return;
             }
@@ -687,12 +754,12 @@ namespace Ryujinx.HLE.HOS
                 tamperMachine.InstallAtmosphereCheat(cheat.Name, cheatId, cheat.Instructions, tamperInfo, exeAddress);
             }
 
-            EnableCheats(titleId, tamperMachine);
+            EnableCheats(applicationId, tamperMachine);
         }
 
-        internal static void EnableCheats(ulong titleId, TamperMachine tamperMachine)
+        internal static void EnableCheats(ulong applicationId, TamperMachine tamperMachine)
         {
-            var contentDirectory = FindTitleDir(new DirectoryInfo(Path.Combine(GetModsBasePath(), AmsContentsDir)), $"{titleId:x16}");
+            var contentDirectory = FindApplicationDir(new DirectoryInfo(Path.Combine(GetModsBasePath(), AmsContentsDir)), $"{applicationId:x16}");
             string enabledCheatsPath = Path.Combine(contentDirectory.FullName, CheatDir, "enabled.txt");
 
             if (File.Exists(enabledCheatsPath))
@@ -724,6 +791,11 @@ namespace Ryujinx.HLE.HOS
             // Collect patches
             foreach (var mod in mods)
             {
+                if (!mod.Enabled)
+                {
+                    continue;
+                }
+
                 var patchDir = mod.Path;
                 foreach (var patchFile in patchDir.EnumerateFiles())
                 {

src/Ryujinx.HLE/HOS/Services/Arp/IReader.cs

@@ -1,8 +0,0 @@
-namespace Ryujinx.HLE.HOS.Services.Arp
-{
-    [Service("arp:r")]
-    class IReader : IpcService
-    {
-        public IReader(ServiceCtx context) { }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Arp/IWriter.cs

@@ -1,8 +0,0 @@
-namespace Ryujinx.HLE.HOS.Services.Arp
-{
-    [Service("arp:w")]
-    class IWriter : IpcService
-    {
-        public IWriter(ServiceCtx context) { }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Pctl/ParentalControlServiceFactory/IParentalControlService.cs

@@ -159,9 +159,7 @@ namespace Ryujinx.HLE.HOS.Services.Pctl.ParentalControlServiceFactory
             }
             else
             {
-#pragma warning disable CS0162 // Unreachable code
                 return ResultCode.StereoVisionRestrictionConfigurableDisabled;
-#pragma warning restore CS0162
             }
         }
 

src/Ryujinx.HLE/HOS/Services/Ssl/SslService/SslManagedSocketConnection.cs

@@ -3,6 +3,7 @@ using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl;
 using Ryujinx.HLE.HOS.Services.Ssl.Types;
 using System;
 using System.IO;
+using System.Net;
 using System.Net.Security;
 using System.Net.Sockets;
 using System.Security.Authentication;
@@ -83,10 +84,40 @@ namespace Ryujinx.HLE.HOS.Services.Ssl.SslService
         }
 #pragma warning restore SYSLIB0039
 
+        /// <summary>
+        /// Retrieve the hostname of the current remote in case the provided hostname is null or empty.
+        /// </summary>
+        /// <param name="hostName">The current hostname</param>
+        /// <returns>Either the resolved or provided hostname</returns>
+        /// <remarks>
+        /// This is done to avoid getting an <see cref="System.Security.Authentication.AuthenticationException"/>
+        /// as the remote certificate will be rejected with <c>RemoteCertificateNameMismatch</c> due to an empty hostname.
+        /// This is not what the switch does!
+        /// It might just skip remote hostname verification if the hostname wasn't set with <see cref="ISslConnection.SetHostName"/> before.
+        /// TODO: Remove this as soon as we know how the switch deals with empty hostnames
+        /// </remarks>
+        private string RetrieveHostName(string hostName)
+        {
+            if (!string.IsNullOrEmpty(hostName))
+            {
+                return hostName;
+            }
+
+            try
+            {
+                return Dns.GetHostEntry(Socket.RemoteEndPoint.Address).HostName;
+            }
+            catch (SocketException)
+            {
+                return hostName;
+            }
+        }
+
         public ResultCode Handshake(string hostName)
         {
             StartSslOperation();
             _stream = new SslStream(new NetworkStream(((ManagedSocket)Socket).Socket, false), false, null, null);
+            hostName = RetrieveHostName(hostName);
             _stream.AuthenticateAsClient(hostName, null, TranslateSslVersion(_sslVersion), false);
             EndSslOperation();
 

src/Ryujinx.HLE/Loaders/Processes/Extensions/FileSystemExtensions.cs

@@ -34,7 +34,7 @@ namespace Ryujinx.HLE.Loaders.Processes.Extensions
             return metaLoader;
         }
 
-        public static ProcessResult Load(this IFileSystem exeFs, Switch device, BlitStruct<ApplicationControlProperty> nacpData, MetaLoader metaLoader, bool isHomebrew = false)
+        public static ProcessResult Load(this IFileSystem exeFs, Switch device, BlitStruct<ApplicationControlProperty> nacpData, MetaLoader metaLoader, byte programIndex, bool isHomebrew = false)
         {
             ulong programId = metaLoader.GetProgramId();
 
@@ -119,6 +119,7 @@ namespace Ryujinx.HLE.Loaders.Processes.Extensions
                 true,
                 programName,
                 metaLoader.GetProgramId(),
+                programIndex,
                 null,
                 nsoExecutables);
 

src/Ryujinx.HLE/Loaders/Processes/Extensions/LocalFileSystemExtensions.cs

@@ -16,17 +16,14 @@ namespace Ryujinx.HLE.Loaders.Processes
             var nacpData = new BlitStruct<ApplicationControlProperty>(1);
             ulong programId = metaLoader.GetProgramId();
 
-            device.Configuration.VirtualFileSystem.ModLoader.CollectMods(
+            device.Configuration.VirtualFileSystem.ModLoader.CollectMods(new[] { programId });
-                new[] { programId },
-                ModLoader.GetModsBasePath(),
-                ModLoader.GetSdModsBasePath());
 
             if (programId != 0)
             {
                 ProcessLoaderHelper.EnsureSaveData(device, new ApplicationId(programId), nacpData);
             }
 
-            ProcessResult processResult = exeFs.Load(device, nacpData, metaLoader);
+            ProcessResult processResult = exeFs.Load(device, nacpData, metaLoader, 0);
 
             // Load RomFS.
             if (!string.IsNullOrEmpty(romFsPath))

src/Ryujinx.HLE/Loaders/Processes/Extensions/NcaExtensions.cs

@@ -61,7 +61,7 @@ namespace Ryujinx.HLE.Loaders.Processes.Extensions
 
             */
 
-            ProcessResult processResult = exeFs.Load(device, nacpData, metaLoader);
+            ProcessResult processResult = exeFs.Load(device, nacpData, metaLoader, (byte)nca.GetProgramIndex());
 
             // Load RomFS.
             if (romFs == null)

src/Ryujinx.HLE/Loaders/Processes/ProcessLoader.cs

@@ -77,7 +77,7 @@ namespace Ryujinx.HLE.Loaders.Processes
             if (processResult.ProcessId == 0)
             {
                 // This is not a normal NSP, it's actually a ExeFS as a NSP
-                processResult = partitionFileSystem.Load(_device, new BlitStruct<ApplicationControlProperty>(1), partitionFileSystem.GetNpdm(), true);
+                processResult = partitionFileSystem.Load(_device, new BlitStruct<ApplicationControlProperty>(1), partitionFileSystem.GetNpdm(), 0, true);
             }
 
             if (processResult.ProcessId != 0 && _processesByPid.TryAdd(processResult.ProcessId, processResult))
@@ -198,7 +198,7 @@ namespace Ryujinx.HLE.Loaders.Processes
             }
             else
             {
-                programName = System.IO.Path.GetFileNameWithoutExtension(path);
+                programName = Path.GetFileNameWithoutExtension(path);
 
                 executable = new NsoExecutable(new LocalStorage(path, FileAccess.Read), programName);
             }
@@ -215,6 +215,7 @@ namespace Ryujinx.HLE.Loaders.Processes
                                                                        allowCodeMemoryForJit: true,
                                                                        programName,
                                                                        programId,
+                                                                       0,
                                                                        null,
                                                                        executable);
 

src/Ryujinx.HLE/Loaders/Processes/ProcessLoaderHelper.cs

@@ -19,6 +19,7 @@ using Ryujinx.HLE.HOS.Kernel.Process;
 using Ryujinx.HLE.Loaders.Executables;
 using Ryujinx.HLE.Loaders.Processes.Extensions;
 using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
 using System;
 using System.Linq;
 using System.Runtime.InteropServices;
@@ -229,6 +230,7 @@ namespace Ryujinx.HLE.Loaders.Processes
             bool allowCodeMemoryForJit,
             string name,
             ulong programId,
+            byte programIndex,
             byte[] arguments = null,
             params IExecutable[] executables)
         {
@@ -421,7 +423,7 @@ namespace Ryujinx.HLE.Loaders.Processes
             // Once everything is loaded, we can load cheats.
             device.Configuration.VirtualFileSystem.ModLoader.LoadCheats(programId, tamperInfo, device.TamperMachine);
 
-            return new ProcessResult(
+            ProcessResult processResult = new(
                 metaLoader,
                 applicationControlProperties,
                 diskCacheEnabled,
@@ -431,6 +433,25 @@ namespace Ryujinx.HLE.Loaders.Processes
                 meta.MainThreadPriority,
                 meta.MainThreadStackSize,
                 device.System.State.DesiredTitleLanguage);
+
+            // Register everything in arp service.
+            device.System.ServiceTable.ArpWriter.AcquireRegistrar(out IRegistrar registrar);
+            registrar.SetApplicationControlProperty(MemoryMarshal.Cast<byte, Horizon.Sdk.Ns.ApplicationControlProperty>(applicationControlProperties.ByteSpan)[0]);
+            // TODO: Handle Version and StorageId when it will be needed.
+            registrar.SetApplicationLaunchProperty(new ApplicationLaunchProperty()
+            {
+                ApplicationId = new Horizon.Sdk.Ncm.ApplicationId(programId),
+                Version = 0x00,
+                Storage = Horizon.Sdk.Ncm.StorageId.BuiltInUser,
+                PatchStorage = Horizon.Sdk.Ncm.StorageId.None,
+                ApplicationKind = ApplicationKind.Application,
+            });
+
+            device.System.ServiceTable.ArpReader.GetApplicationInstanceId(out ulong applicationInstanceId, process.Pid);
+            device.System.ServiceTable.ArpWriter.AcquireApplicationProcessPropertyUpdater(out IUpdater updater, applicationInstanceId);
+            updater.SetApplicationProcessProperty(process.Pid, new ApplicationProcessProperty() { ProgramIndex = programIndex });
+
+            return processResult;
         }
 
         public static Result LoadIntoMemory(KProcess process, IExecutable image, ulong baseAddress)

src/Ryujinx.Headless.SDL2/WindowBase.cs

@@ -80,7 +80,7 @@ namespace Ryujinx.Headless.SDL2
         private bool _isStopped;
         private uint _windowId;
 
-        private string _gpuVendorName;
+        private string _gpuDriverName;
 
         private readonly AspectRatio _aspectRatio;
         private readonly bool _enableMouse;
@@ -241,9 +241,9 @@ namespace Ryujinx.Headless.SDL2
 
         public abstract SDL_WindowFlags GetWindowFlags();
 
-        private string GetGpuVendorName()
+        private string GetGpuDriverName()
         {
-            return Renderer.GetHardwareInfo().GpuVendor;
+            return Renderer.GetHardwareInfo().GpuDriver;
         }
 
         private void SetAntiAliasing()
@@ -269,7 +269,7 @@ namespace Ryujinx.Headless.SDL2
 
             SetScalingFilter();
 
-            _gpuVendorName = GetGpuVendorName();
+            _gpuDriverName = GetGpuDriverName();
 
             Device.Gpu.Renderer.RunLoop(() =>
             {
@@ -314,7 +314,7 @@ namespace Ryujinx.Headless.SDL2
                             Device.Configuration.AspectRatio.ToText(),
                             $"Game: {Device.Statistics.GetGameFrameRate():00.00} FPS ({Device.Statistics.GetGameFrameTime():00.00} ms)",
                             $"FIFO: {Device.Statistics.GetFifoPercent():0.00} %",
-                            $"GPU: {_gpuVendorName}"));
+                            $"GPU: {_gpuDriverName}"));
 
                         _ticks = Math.Min(_ticks - _ticksPerFrame, _ticksPerFrame);
                     }

src/Ryujinx.Horizon/Arp/ArpIpcServer.cs

@@ -0,0 +1,61 @@
+using Ryujinx.Horizon.Arp.Ipc;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+
+namespace Ryujinx.Horizon.Arp
+{
+    class ArpIpcServer
+    {
+        private const int ArpRMaxSessionsCount = 16;
+        private const int ArpWMaxSessionsCount = 8;
+        private const int MaxSessionsCount = ArpRMaxSessionsCount + ArpWMaxSessionsCount;
+
+        private const int PointerBufferSize = 0x1000;
+        private const int MaxDomains = 24;
+        private const int MaxDomainObjects = 32;
+        private const int MaxPortsCount = 2;
+
+        private static readonly ManagerOptions _managerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        private SmApi _sm;
+        private ServerManager _serverManager;
+        private ApplicationInstanceManager _applicationInstanceManager;
+
+        public IReader Reader { get; private set; }
+        public IWriter Writer { get; private set; }
+
+        public void Initialize()
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _serverManager = new ServerManager(allocator, _sm, MaxPortsCount, _managerOptions, MaxSessionsCount);
+
+            _applicationInstanceManager = new ApplicationInstanceManager();
+
+            Reader reader = new(_applicationInstanceManager);
+            Reader = reader;
+
+            Writer writer = new(_applicationInstanceManager);
+            Writer = writer;
+
+            _serverManager.RegisterObjectForServer(reader, ServiceName.Encode("arp:r"), ArpRMaxSessionsCount);
+            _serverManager.RegisterObjectForServer(writer, ServiceName.Encode("arp:w"), ArpWMaxSessionsCount);
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _applicationInstanceManager.Dispose();
+            _serverManager.Dispose();
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/ArpMain.cs

@@ -0,0 +1,20 @@
+namespace Ryujinx.Horizon.Arp
+{
+    class ArpMain : IService
+    {
+        public static void Main(ServiceTable serviceTable)
+        {
+            ArpIpcServer arpIpcServer = new();
+
+            arpIpcServer.Initialize();
+
+            serviceTable.ArpReader = arpIpcServer.Reader;
+            serviceTable.ArpWriter = arpIpcServer.Writer;
+
+            serviceTable.SignalServiceReady();
+
+            arpIpcServer.ServiceRequests();
+            arpIpcServer.Shutdown();
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/Ipc/Reader.cs

@@ -0,0 +1,135 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.Ns;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+
+namespace Ryujinx.Horizon.Arp.Ipc
+{
+    partial class Reader : IReader, IServiceObject
+    {
+        private readonly ApplicationInstanceManager _applicationInstanceManager;
+
+        public Reader(ApplicationInstanceManager applicationInstanceManager)
+        {
+            _applicationInstanceManager = applicationInstanceManager;
+        }
+
+        [CmifCommand(0)]
+        public Result GetApplicationLaunchProperty(out ApplicationLaunchProperty applicationLaunchProperty, ulong applicationInstanceId)
+        {
+            if (_applicationInstanceManager.Entries[applicationInstanceId] == null || !_applicationInstanceManager.Entries[applicationInstanceId].LaunchProperty.HasValue)
+            {
+                applicationLaunchProperty = default;
+
+                return ArpResult.InvalidInstanceId;
+            }
+
+            applicationLaunchProperty = _applicationInstanceManager.Entries[applicationInstanceId].LaunchProperty.Value;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result GetApplicationControlProperty([Buffer(HipcBufferFlags.Out | HipcBufferFlags.MapAlias, 0x4000)] out ApplicationControlProperty applicationControlProperty, ulong applicationInstanceId)
+        {
+            if (_applicationInstanceManager.Entries[applicationInstanceId] == null || !_applicationInstanceManager.Entries[applicationInstanceId].ControlProperty.HasValue)
+            {
+                applicationControlProperty = default;
+
+                return ArpResult.InvalidInstanceId;
+            }
+
+            applicationControlProperty = _applicationInstanceManager.Entries[applicationInstanceId].ControlProperty.Value;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result GetApplicationProcessProperty(out ApplicationProcessProperty applicationProcessProperty, ulong applicationInstanceId)
+        {
+            if (_applicationInstanceManager.Entries[applicationInstanceId] == null || !_applicationInstanceManager.Entries[applicationInstanceId].ProcessProperty.HasValue)
+            {
+                applicationProcessProperty = default;
+
+                return ArpResult.InvalidInstanceId;
+            }
+
+            applicationProcessProperty = _applicationInstanceManager.Entries[applicationInstanceId].ProcessProperty.Value;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(3)]
+        public Result GetApplicationInstanceId(out ulong applicationInstanceId, ulong pid)
+        {
+            applicationInstanceId = 0;
+
+            if (pid == 0)
+            {
+                return ArpResult.InvalidPid;
+            }
+
+            for (int i = 0; i < _applicationInstanceManager.Entries.Length; i++)
+            {
+                if (_applicationInstanceManager.Entries[i] != null && _applicationInstanceManager.Entries[i].Pid == pid)
+                {
+                    applicationInstanceId = (ulong)i;
+
+                    return Result.Success;
+                }
+            }
+
+            return ArpResult.InvalidPid;
+        }
+
+        [CmifCommand(4)]
+        public Result GetApplicationInstanceUnregistrationNotifier(out IUnregistrationNotifier unregistrationNotifier)
+        {
+            unregistrationNotifier = new UnregistrationNotifier(_applicationInstanceManager);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(5)]
+        public Result ListApplicationInstanceId(out int count, [Buffer(HipcBufferFlags.Out | HipcBufferFlags.MapAlias)] Span<ulong> applicationInstanceIdList)
+        {
+            count = 0;
+
+            if (_applicationInstanceManager.Entries[0] != null)
+            {
+                applicationInstanceIdList[count++] = 0;
+            }
+
+            if (_applicationInstanceManager.Entries[1] != null)
+            {
+                applicationInstanceIdList[count++] = 1;
+            }
+
+            return Result.Success;
+        }
+
+        [CmifCommand(6)]
+        public Result GetMicroApplicationInstanceId(out ulong microApplicationInstanceId, [ClientProcessId] ulong pid)
+        {
+            return GetApplicationInstanceId(out microApplicationInstanceId, pid);
+        }
+
+        [CmifCommand(7)]
+        public Result GetApplicationCertificate([Buffer(HipcBufferFlags.Out | HipcBufferFlags.MapAlias | HipcBufferFlags.FixedSize, 0x528)] out ApplicationCertificate applicationCertificate, ulong applicationInstanceId)
+        {
+            if (_applicationInstanceManager.Entries[applicationInstanceId] == null)
+            {
+                applicationCertificate = default;
+
+                return ArpResult.InvalidInstanceId;
+            }
+
+            applicationCertificate = _applicationInstanceManager.Entries[applicationInstanceId].Certificate.Value;
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/Ipc/Registrar.cs

@@ -0,0 +1,52 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.Ns;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+
+namespace Ryujinx.Horizon.Arp.Ipc
+{
+    partial class Registrar : IRegistrar, IServiceObject
+    {
+        private readonly ApplicationInstance _applicationInstance;
+
+        public Registrar(ApplicationInstance applicationInstance)
+        {
+            _applicationInstance = applicationInstance;
+        }
+
+        [CmifCommand(0)]
+        public Result Issue(out ulong applicationInstanceId)
+        {
+            throw new NotImplementedException();
+        }
+
+        [CmifCommand(1)]
+        public Result SetApplicationLaunchProperty(ApplicationLaunchProperty applicationLaunchProperty)
+        {
+            if (_applicationInstance.LaunchProperty != null)
+            {
+                return ArpResult.DataAlreadyBound;
+            }
+
+            _applicationInstance.LaunchProperty = applicationLaunchProperty;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result SetApplicationControlProperty([Buffer(HipcBufferFlags.In | HipcBufferFlags.MapAlias | HipcBufferFlags.FixedSize, 0x4000)] in ApplicationControlProperty applicationControlProperty)
+        {
+            if (_applicationInstance.ControlProperty != null)
+            {
+                return ArpResult.DataAlreadyBound;
+            }
+
+            _applicationInstance.ControlProperty = applicationControlProperty;
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/Ipc/UnregistrationNotifier.cs

@@ -0,0 +1,25 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Arp.Ipc
+{
+    partial class UnregistrationNotifier : IUnregistrationNotifier, IServiceObject
+    {
+        private readonly ApplicationInstanceManager _applicationInstanceManager;
+
+        public UnregistrationNotifier(ApplicationInstanceManager applicationInstanceManager)
+        {
+            _applicationInstanceManager = applicationInstanceManager;
+        }
+
+        [CmifCommand(0)]
+        public Result GetReadableHandle([CopyHandle] out int readableHandle)
+        {
+            readableHandle = _applicationInstanceManager.EventHandle;
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/Ipc/Updater.cs

@@ -0,0 +1,74 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.Sf;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+
+namespace Ryujinx.Horizon.Arp.Ipc
+{
+    partial class Updater : IUpdater, IServiceObject
+    {
+        private readonly ApplicationInstanceManager _applicationInstanceManager;
+        private readonly ulong _applicationInstanceId;
+        private readonly bool _forCertificate;
+
+        public Updater(ApplicationInstanceManager applicationInstanceManager, ulong applicationInstanceId, bool forCertificate)
+        {
+            _applicationInstanceManager = applicationInstanceManager;
+            _applicationInstanceId = applicationInstanceId;
+            _forCertificate = forCertificate;
+        }
+
+        [CmifCommand(0)]
+        public Result Issue()
+        {
+            throw new NotImplementedException();
+        }
+
+        [CmifCommand(1)]
+        public Result SetApplicationProcessProperty(ulong pid, ApplicationProcessProperty applicationProcessProperty)
+        {
+            if (_forCertificate)
+            {
+                return ArpResult.DataAlreadyBound;
+            }
+
+            if (pid == 0)
+            {
+                return ArpResult.InvalidPid;
+            }
+
+            _applicationInstanceManager.Entries[_applicationInstanceId].Pid = pid;
+            _applicationInstanceManager.Entries[_applicationInstanceId].ProcessProperty = applicationProcessProperty;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result DeleteApplicationProcessProperty()
+        {
+            if (_forCertificate)
+            {
+                return ArpResult.DataAlreadyBound;
+            }
+
+            _applicationInstanceManager.Entries[_applicationInstanceId].ProcessProperty = new ApplicationProcessProperty();
+
+            return Result.Success;
+        }
+
+        [CmifCommand(3)]
+        public Result SetApplicationCertificate([Buffer(HipcBufferFlags.In | HipcBufferFlags.AutoSelect)] ApplicationCertificate applicationCertificate)
+        {
+            if (!_forCertificate)
+            {
+                return ArpResult.DataAlreadyBound;
+            }
+
+            _applicationInstanceManager.Entries[_applicationInstanceId].Certificate = applicationCertificate;
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Arp/Ipc/Writer.cs

@@ -0,0 +1,75 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Arp;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using Ryujinx.Horizon.Sdk.OsTypes;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Arp.Ipc
+{
+    partial class Writer : IWriter, IServiceObject
+    {
+        private readonly ApplicationInstanceManager _applicationInstanceManager;
+
+        public Writer(ApplicationInstanceManager applicationInstanceManager)
+        {
+            _applicationInstanceManager = applicationInstanceManager;
+        }
+
+        [CmifCommand(0)]
+        public Result AcquireRegistrar(out IRegistrar registrar)
+        {
+            if (_applicationInstanceManager.Entries[0] != null)
+            {
+                if (_applicationInstanceManager.Entries[1] != null)
+                {
+                    registrar = null;
+
+                    return ArpResult.NoFreeInstance;
+                }
+                else
+                {
+                    _applicationInstanceManager.Entries[1] = new ApplicationInstance();
+
+                    registrar = new Registrar(_applicationInstanceManager.Entries[1]);
+                }
+            }
+            else
+            {
+                _applicationInstanceManager.Entries[0] = new ApplicationInstance();
+
+                registrar = new Registrar(_applicationInstanceManager.Entries[0]);
+            }
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result UnregisterApplicationInstance(ulong applicationInstanceId)
+        {
+            if (_applicationInstanceManager.Entries[applicationInstanceId] != null)
+            {
+                _applicationInstanceManager.Entries[applicationInstanceId] = null;
+            }
+
+            Os.SignalSystemEvent(ref _applicationInstanceManager.SystemEvent);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result AcquireApplicationProcessPropertyUpdater(out IUpdater updater, ulong applicationInstanceId)
+        {
+            updater = new Updater(_applicationInstanceManager, applicationInstanceId, false);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(3)]
+        public Result AcquireApplicationCertificateUpdater(out IUpdater updater, ulong applicationInstanceId)
+        {
+            updater = new Updater(_applicationInstanceManager, applicationInstanceId, true);
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Prepo/Ipc/PrepoService.cs

@@ -5,6 +5,7 @@ using Ryujinx.Common.Utilities;
 using Ryujinx.Horizon.Common;
 using Ryujinx.Horizon.Prepo.Types;
 using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.Arp;
 using Ryujinx.Horizon.Sdk.Prepo;
 using Ryujinx.Horizon.Sdk.Sf;
 using Ryujinx.Horizon.Sdk.Sf.Hipc;
@@ -22,14 +23,16 @@ namespace Ryujinx.Horizon.Prepo.Ipc
             System,
         }
 
+        private readonly ArpApi _arp;
         private readonly PrepoServicePermissionLevel _permissionLevel;
         private ulong _systemSessionId;
 
         private bool _immediateTransmissionEnabled;
         private bool _userAgreementCheckEnabled = true;
 
-        public PrepoService(PrepoServicePermissionLevel permissionLevel)
+        public PrepoService(ArpApi arp, PrepoServicePermissionLevel permissionLevel)
         {
+            _arp = arp;
             _permissionLevel = permissionLevel;
         }
 
@@ -165,7 +168,7 @@ namespace Ryujinx.Horizon.Prepo.Ipc
             return PrepoResult.PermissionDenied;
         }
 
-        private static Result ProcessPlayReport(PlayReportKind playReportKind, ReadOnlySpan<byte> gameRoomBuffer, ReadOnlySpan<byte> reportBuffer, ulong pid, Uid userId, bool withUserId = false, ApplicationId applicationId = default)
+        private Result ProcessPlayReport(PlayReportKind playReportKind, ReadOnlySpan<byte> gameRoomBuffer, ReadOnlySpan<byte> reportBuffer, ulong pid, Uid userId, bool withUserId = false, ApplicationId applicationId = default)
         {
             if (withUserId)
             {
@@ -199,8 +202,8 @@ namespace Ryujinx.Horizon.Prepo.Ipc
             builder.AppendLine("PlayReport log:");
             builder.AppendLine($" Kind: {playReportKind}");
 
-            // NOTE: The service calls arp:r using the pid to get the application id, if it fails PrepoResult.InvalidPid is returned.
+            // NOTE: Reports are stored internally and an event is signaled to transmit them.
-            //       Reports are stored internally and an event is signaled to transmit them.
+
             if (pid != 0)
             {
                 builder.AppendLine($" Pid: {pid}");
@@ -210,6 +213,16 @@ namespace Ryujinx.Horizon.Prepo.Ipc
                 builder.AppendLine($" ApplicationId: {applicationId}");
             }
 
+            Result result = _arp.GetApplicationInstanceId(out ulong applicationInstanceId, pid);
+            if (result.IsFailure)
+            {
+                return PrepoResult.InvalidPid;
+            }
+
+            _arp.GetApplicationLaunchProperty(out ApplicationLaunchProperty applicationLaunchProperty, applicationInstanceId).AbortOnFailure();
+
+            builder.AppendLine($" ApplicationVersion: {applicationLaunchProperty.Version}");
+
             if (!userId.IsNull)
             {
                 builder.AppendLine($" UserId: {userId}");

src/Ryujinx.Horizon/Prepo/PrepoIpcServer.cs

@@ -1,4 +1,5 @@
 using Ryujinx.Horizon.Prepo.Types;
+using Ryujinx.Horizon.Sdk.Arp;
 using Ryujinx.Horizon.Sdk.Sf.Hipc;
 using Ryujinx.Horizon.Sdk.Sm;
 
@@ -17,16 +18,19 @@ namespace Ryujinx.Horizon.Prepo
         private static readonly ManagerOptions _managerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
 
         private SmApi _sm;
+        private ArpApi _arp;
         private PrepoServerManager _serverManager;
 
         public void Initialize()
         {
             HeapAllocator allocator = new();
 
+            _arp = new ArpApi(allocator);
+
             _sm = new SmApi();
             _sm.Initialize().AbortOnFailure();
 
-            _serverManager = new PrepoServerManager(allocator, _sm, MaxPortsCount, _managerOptions, TotalMaxSessionsCount);
+            _serverManager = new PrepoServerManager(allocator, _sm, _arp, MaxPortsCount, _managerOptions, TotalMaxSessionsCount);
 
 #pragma warning disable IDE0055 // Disable formatting
             _serverManager.RegisterServer((int)PrepoPortIndex.Admin,   ServiceName.Encode("prepo:a"),  MaxSessionsCount); // 1.0.0-5.1.0
@@ -45,6 +49,7 @@ namespace Ryujinx.Horizon.Prepo
 
         public void Shutdown()
         {
+            _arp.Dispose();
             _serverManager.Dispose();
         }
     }

src/Ryujinx.Horizon/Prepo/PrepoServerManager.cs

@@ -1,6 +1,7 @@
 using Ryujinx.Horizon.Common;
 using Ryujinx.Horizon.Prepo.Ipc;
 using Ryujinx.Horizon.Prepo.Types;
+using Ryujinx.Horizon.Sdk.Arp;
 using Ryujinx.Horizon.Sdk.Sf.Hipc;
 using Ryujinx.Horizon.Sdk.Sm;
 using System;
@@ -9,8 +10,11 @@ namespace Ryujinx.Horizon.Prepo
 {
     class PrepoServerManager : ServerManager
     {
-        public PrepoServerManager(HeapAllocator allocator, SmApi sm, int maxPorts, ManagerOptions options, int maxSessions) : base(allocator, sm, maxPorts, options, maxSessions)
+        private readonly ArpApi _arp;
+
+        public PrepoServerManager(HeapAllocator allocator, SmApi sm, ArpApi arp, int maxPorts, ManagerOptions options, int maxSessions) : base(allocator, sm, maxPorts, options, maxSessions)
         {
+            _arp = arp;
         }
 
         protected override Result OnNeedsToAccept(int portIndex, Server server)
@@ -18,12 +22,12 @@ namespace Ryujinx.Horizon.Prepo
             return (PrepoPortIndex)portIndex switch
             {
 #pragma warning disable IDE0055 // Disable formatting
-                PrepoPortIndex.Admin   => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.Admin)),
+                PrepoPortIndex.Admin   => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.Admin)),
-                PrepoPortIndex.Admin2  => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.Admin)),
+                PrepoPortIndex.Admin2  => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.Admin)),
-                PrepoPortIndex.Manager => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.Manager)),
+                PrepoPortIndex.Manager => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.Manager)),
-                PrepoPortIndex.User    => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.User)),
+                PrepoPortIndex.User    => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.User)),
-                PrepoPortIndex.System  => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.System)),
+                PrepoPortIndex.System  => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.System)),
-                PrepoPortIndex.Debug   => AcceptImpl(server, new PrepoService(PrepoServicePermissionLevel.Debug)),
+                PrepoPortIndex.Debug   => AcceptImpl(server, new PrepoService(_arp, PrepoServicePermissionLevel.Debug)),
                 _                      => throw new ArgumentOutOfRangeException(nameof(portIndex)),
 #pragma warning restore IDE0055
             };

src/Ryujinx.Horizon/Sdk/Arp/ApplicationCertificate.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x528)]
+    public struct ApplicationCertificate
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/ApplicationKind.cs

@@ -0,0 +1,8 @@
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public enum ApplicationKind : byte
+    {
+        Application,
+        MicroApplication,
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/ApplicationLaunchProperty.cs

@@ -0,0 +1,14 @@
+using Ryujinx.Horizon.Sdk.Ncm;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public struct ApplicationLaunchProperty
+    {
+        public ApplicationId ApplicationId;
+        public uint Version;
+        public StorageId Storage;
+        public StorageId PatchStorage;
+        public ApplicationKind ApplicationKind;
+        public byte Padding;
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/ApplicationProcessProperty.cs

@@ -0,0 +1,10 @@
+using Ryujinx.Common.Memory;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public struct ApplicationProcessProperty
+    {
+        public byte ProgramIndex;
+        public Array15<byte> Unknown;
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/ArpApi.cs

@@ -0,0 +1,130 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Ns;
+using Ryujinx.Horizon.Sdk.Sf.Cmif;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+using System;
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    class ArpApi : IDisposable
+    {
+        private const string ArpRName = "arp:r";
+
+        private readonly HeapAllocator _allocator;
+        private int _sessionHandle;
+
+        public ArpApi(HeapAllocator allocator)
+        {
+            _allocator = allocator;
+        }
+
+        private void InitializeArpRService()
+        {
+            if (_sessionHandle == 0)
+            {
+                using var smApi = new SmApi();
+
+                smApi.Initialize();
+                smApi.GetServiceHandle(out _sessionHandle, ServiceName.Encode(ArpRName)).AbortOnFailure();
+            }
+        }
+
+        public Result GetApplicationInstanceId(out ulong applicationInstanceId, ulong applicationPid)
+        {
+            Span<byte> data = stackalloc byte[8];
+            SpanWriter writer = new(data);
+
+            writer.Write(applicationPid);
+
+            InitializeArpRService();
+
+            Result result = ServiceUtil.SendRequest(out CmifResponse response, _sessionHandle, 3, sendPid: false, data);
+            if (result.IsFailure)
+            {
+                applicationInstanceId = 0;
+
+                return result;
+            }
+
+            SpanReader reader = new(response.Data);
+
+            applicationInstanceId = reader.Read<ulong>();
+
+            return Result.Success;
+        }
+
+        public Result GetApplicationLaunchProperty(out ApplicationLaunchProperty applicationLaunchProperty, ulong applicationInstanceId)
+        {
+            applicationLaunchProperty = default;
+
+            Span<byte> data = stackalloc byte[8];
+            SpanWriter writer = new(data);
+
+            writer.Write(applicationInstanceId);
+
+            InitializeArpRService();
+
+            Result result = ServiceUtil.SendRequest(out CmifResponse response, _sessionHandle, 0, sendPid: false, data);
+            if (result.IsFailure)
+            {
+                return result;
+            }
+
+            SpanReader reader = new(response.Data);
+
+            applicationLaunchProperty = reader.Read<ApplicationLaunchProperty>();
+
+            return Result.Success;
+        }
+
+        public Result GetApplicationControlProperty(out ApplicationControlProperty applicationControlProperty, ulong applicationInstanceId)
+        {
+            applicationControlProperty = default;
+
+            Span<byte> data = stackalloc byte[8];
+            SpanWriter writer = new(data);
+
+            writer.Write(applicationInstanceId);
+
+            ulong bufferSize = (ulong)Unsafe.SizeOf<ApplicationControlProperty>();
+            ulong bufferAddress = _allocator.Allocate(bufferSize);
+
+            InitializeArpRService();
+
+            Result result = ServiceUtil.SendRequest(
+                out CmifResponse response,
+                _sessionHandle,
+                1,
+                sendPid: false,
+                data,
+                stackalloc[] { HipcBufferFlags.Out | HipcBufferFlags.MapAlias | HipcBufferFlags.FixedSize },
+                stackalloc[] { new PointerAndSize(bufferAddress, bufferSize) });
+
+            if (result.IsFailure)
+            {
+                return result;
+            }
+
+            applicationControlProperty = HorizonStatic.AddressSpace.Read<ApplicationControlProperty>(bufferAddress);
+
+            _allocator.Free(bufferAddress, bufferSize);
+
+            return Result.Success;
+        }
+
+        public void Dispose()
+        {
+            if (_sessionHandle != 0)
+            {
+                HorizonStatic.Syscall.CloseHandle(_sessionHandle);
+
+                _sessionHandle = 0;
+            }
+
+            GC.SuppressFinalize(this);
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/ArpResult.cs

@@ -0,0 +1,17 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    static class ArpResult
+    {
+        private const int ModuleId = 157;
+
+        public static Result InvalidArgument => new(ModuleId, 30);
+        public static Result InvalidPid => new(ModuleId, 31);
+        public static Result InvalidPointer => new(ModuleId, 32);
+        public static Result DataAlreadyBound => new(ModuleId, 42);
+        public static Result AllocationFailed => new(ModuleId, 63);
+        public static Result NoFreeInstance => new(ModuleId, 101);
+        public static Result InvalidInstanceId => new(ModuleId, 102);
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/Detail/ApplicationInstance.cs

@@ -0,0 +1,13 @@
+using Ryujinx.Horizon.Sdk.Ns;
+
+namespace Ryujinx.Horizon.Sdk.Arp.Detail
+{
+    class ApplicationInstance
+    {
+        public ulong Pid { get; set; }
+        public ApplicationLaunchProperty? LaunchProperty { get; set; }
+        public ApplicationProcessProperty? ProcessProperty { get; set; }
+        public ApplicationControlProperty? ControlProperty { get; set; }
+        public ApplicationCertificate? Certificate { get; set; }
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/Detail/ApplicationInstanceManager.cs

@@ -0,0 +1,31 @@
+using Ryujinx.Horizon.Sdk.OsTypes;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Horizon.Sdk.Arp.Detail
+{
+    class ApplicationInstanceManager : IDisposable
+    {
+        private int _disposalState;
+
+        public SystemEventType SystemEvent;
+        public int EventHandle;
+
+        public readonly ApplicationInstance[] Entries = new ApplicationInstance[2];
+
+        public ApplicationInstanceManager()
+        {
+            Os.CreateSystemEvent(out SystemEvent, EventClearMode.ManualClear, true).AbortOnFailure();
+
+            EventHandle = Os.GetReadableHandleOfSystemEvent(ref SystemEvent);
+        }
+
+        public void Dispose()
+        {
+            if (EventHandle != 0 && Interlocked.Exchange(ref _disposalState, 1) == 0)
+            {
+                Os.DestroySystemEvent(ref SystemEvent);
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/IReader.cs

@@ -0,0 +1,18 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Ns;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public interface IReader
+    {
+        public Result GetApplicationLaunchProperty(out ApplicationLaunchProperty applicationLaunchProperty, ulong applicationInstanceId);
+        public Result GetApplicationControlProperty(out ApplicationControlProperty applicationControlProperty, ulong applicationInstanceId);
+        public Result GetApplicationProcessProperty(out ApplicationProcessProperty applicationControlProperty, ulong applicationInstanceId);
+        public Result GetApplicationInstanceId(out ulong applicationInstanceId, ulong pid);
+        public Result GetApplicationInstanceUnregistrationNotifier(out IUnregistrationNotifier unregistrationNotifier);
+        public Result ListApplicationInstanceId(out int count, Span<ulong> applicationInstanceIdList);
+        public Result GetMicroApplicationInstanceId(out ulong MicroApplicationInstanceId, ulong pid);
+        public Result GetApplicationCertificate(out ApplicationCertificate applicationCertificate, ulong applicationInstanceId);
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/IRegistrar.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Ns;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public interface IRegistrar
+    {
+        public Result Issue(out ulong applicationInstanceId);
+        public Result SetApplicationLaunchProperty(ApplicationLaunchProperty applicationLaunchProperty);
+        public Result SetApplicationControlProperty(in ApplicationControlProperty applicationControlProperty);
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/IUnregistrationNotifier.cs

@@ -0,0 +1,9 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public interface IUnregistrationNotifier
+    {
+        public Result GetReadableHandle(out int readableHandle);
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/IUpdater.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public interface IUpdater
+    {
+        public Result Issue();
+        public Result SetApplicationProcessProperty(ulong pid, ApplicationProcessProperty applicationProcessProperty);
+        public Result DeleteApplicationProcessProperty();
+        public Result SetApplicationCertificate(ApplicationCertificate applicationCertificate);
+    }
+}

src/Ryujinx.Horizon/Sdk/Arp/IWriter.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Arp
+{
+    public interface IWriter
+    {
+        public Result AcquireRegistrar(out IRegistrar registrar);
+        public Result UnregisterApplicationInstance(ulong applicationInstanceId);
+        public Result AcquireApplicationProcessPropertyUpdater(out IUpdater updater, ulong applicationInstanceId);
+        public Result AcquireApplicationCertificateUpdater(out IUpdater updater, ulong applicationInstanceId);
+    }
+}

src/Ryujinx.Horizon/Sdk/Ncm/ApplicationId.cs

@@ -1,6 +1,6 @@
 namespace Ryujinx.Horizon.Sdk.Ncm
 {
-    readonly struct ApplicationId
+    public readonly struct ApplicationId
     {
         public readonly ulong Id;
 

src/Ryujinx.Horizon/Sdk/Ncm/StorageId.cs

@@ -0,0 +1,13 @@
+namespace Ryujinx.Horizon.Sdk.Ncm
+{
+    public enum StorageId : byte
+    {
+        None,
+        Host,
+        GameCard,
+        BuiltInSystem,
+        BuiltInUser,
+        SdCard,
+        Any,
+    }
+}

src/Ryujinx.Horizon/Sdk/Ns/ApplicationControlProperty.cs

@@ -0,0 +1,309 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Sdk.Arp.Detail;
+using System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Horizon.Sdk.Ns
+{
+    public struct ApplicationControlProperty
+    {
+        public Array16<ApplicationTitle> Title;
+        public Array37<byte> Isbn;
+        public StartupUserAccountValue StartupUserAccount;
+        public UserAccountSwitchLockValue UserAccountSwitchLock;
+        public AddOnContentRegistrationTypeValue AddOnContentRegistrationType;
+        public AttributeFlagValue AttributeFlag;
+        public uint SupportedLanguageFlag;
+        public ParentalControlFlagValue ParentalControlFlag;
+        public ScreenshotValue Screenshot;
+        public VideoCaptureValue VideoCapture;
+        public DataLossConfirmationValue DataLossConfirmation;
+        public PlayLogPolicyValue PlayLogPolicy;
+        public ulong PresenceGroupId;
+        public Array32<sbyte> RatingAge;
+        public Array16<byte> DisplayVersion;
+        public ulong AddOnContentBaseId;
+        public ulong SaveDataOwnerId;
+        public long UserAccountSaveDataSize;
+        public long UserAccountSaveDataJournalSize;
+        public long DeviceSaveDataSize;
+        public long DeviceSaveDataJournalSize;
+        public long BcatDeliveryCacheStorageSize;
+        public Array8<byte> ApplicationErrorCodeCategory;
+        public Array8<ulong> LocalCommunicationId;
+        public LogoTypeValue LogoType;
+        public LogoHandlingValue LogoHandling;
+        public RuntimeAddOnContentInstallValue RuntimeAddOnContentInstall;
+        public RuntimeParameterDeliveryValue RuntimeParameterDelivery;
+        public Array2<byte> Reserved30F4;
+        public CrashReportValue CrashReport;
+        public HdcpValue Hdcp;
+        public ulong SeedForPseudoDeviceId;
+        public Array65<byte> BcatPassphrase;
+        public StartupUserAccountOptionFlagValue StartupUserAccountOption;
+        public Array6<byte> ReservedForUserAccountSaveDataOperation;
+        public long UserAccountSaveDataSizeMax;
+        public long UserAccountSaveDataJournalSizeMax;
+        public long DeviceSaveDataSizeMax;
+        public long DeviceSaveDataJournalSizeMax;
+        public long TemporaryStorageSize;
+        public long CacheStorageSize;
+        public long CacheStorageJournalSize;
+        public long CacheStorageDataAndJournalSizeMax;
+        public ushort CacheStorageIndexMax;
+        public byte Reserved318A;
+        public byte RuntimeUpgrade;
+        public uint SupportingLimitedLicenses;
+        public Array16<ulong> PlayLogQueryableApplicationId;
+        public PlayLogQueryCapabilityValue PlayLogQueryCapability;
+        public RepairFlagValue RepairFlag;
+        public byte ProgramIndex;
+        public RequiredNetworkServiceLicenseOnLaunchValue RequiredNetworkServiceLicenseOnLaunchFlag;
+        public Array4<byte> Reserved3214;
+        public ApplicationNeighborDetectionClientConfiguration NeighborDetectionClientConfiguration;
+        public ApplicationJitConfiguration JitConfiguration;
+        public RequiredAddOnContentsSetBinaryDescriptor RequiredAddOnContentsSetBinaryDescriptors;
+        public PlayReportPermissionValue PlayReportPermission;
+        public CrashScreenshotForProdValue CrashScreenshotForProd;
+        public CrashScreenshotForDevValue CrashScreenshotForDev;
+        public byte ContentsAvailabilityTransitionPolicy;
+        public Array4<byte> Reserved3404;
+        public AccessibleLaunchRequiredVersionValue AccessibleLaunchRequiredVersion;
+        public ByteArray3000 Reserved3448;
+
+        public readonly string IsbnString => Encoding.UTF8.GetString(Isbn.AsSpan()).TrimEnd('\0');
+        public readonly string DisplayVersionString => Encoding.UTF8.GetString(DisplayVersion.AsSpan()).TrimEnd('\0');
+        public readonly string ApplicationErrorCodeCategoryString => Encoding.UTF8.GetString(ApplicationErrorCodeCategory.AsSpan()).TrimEnd('\0');
+        public readonly string BcatPassphraseString => Encoding.UTF8.GetString(BcatPassphrase.AsSpan()).TrimEnd('\0');
+
+        public struct ApplicationTitle
+        {
+            public ByteArray512 Name;
+            public Array256<byte> Publisher;
+
+            public readonly string NameString => Encoding.UTF8.GetString(Name.AsSpan()).TrimEnd('\0');
+            public readonly string PublisherString => Encoding.UTF8.GetString(Publisher.AsSpan()).TrimEnd('\0');
+        }
+
+        public struct ApplicationNeighborDetectionClientConfiguration
+        {
+            public ApplicationNeighborDetectionGroupConfiguration SendGroupConfiguration;
+            public Array16<ApplicationNeighborDetectionGroupConfiguration> ReceivableGroupConfigurations;
+        }
+
+        public struct ApplicationNeighborDetectionGroupConfiguration
+        {
+            public ulong GroupId;
+            public Array16<byte> Key;
+        }
+
+        public struct ApplicationJitConfiguration
+        {
+            public JitConfigurationFlag Flags;
+            public long MemorySize;
+        }
+
+        public struct RequiredAddOnContentsSetBinaryDescriptor
+        {
+            public Array32<ushort> Descriptors;
+        }
+
+        public struct AccessibleLaunchRequiredVersionValue
+        {
+            public Array8<ulong> ApplicationId;
+        }
+
+        public enum Language
+        {
+            AmericanEnglish = 0,
+            BritishEnglish = 1,
+            Japanese = 2,
+            French = 3,
+            German = 4,
+            LatinAmericanSpanish = 5,
+            Spanish = 6,
+            Italian = 7,
+            Dutch = 8,
+            CanadianFrench = 9,
+            Portuguese = 10,
+            Russian = 11,
+            Korean = 12,
+            TraditionalChinese = 13,
+            SimplifiedChinese = 14,
+            BrazilianPortuguese = 15,
+        }
+
+        public enum Organization
+        {
+            CERO = 0,
+            GRACGCRB = 1,
+            GSRMR = 2,
+            ESRB = 3,
+            ClassInd = 4,
+            USK = 5,
+            PEGI = 6,
+            PEGIPortugal = 7,
+            PEGIBBFC = 8,
+            Russian = 9,
+            ACB = 10,
+            OFLC = 11,
+            IARCGeneric = 12,
+        }
+
+        public enum StartupUserAccountValue : byte
+        {
+            None = 0,
+            Required = 1,
+            RequiredWithNetworkServiceAccountAvailable = 2,
+        }
+
+        public enum UserAccountSwitchLockValue : byte
+        {
+            Disable = 0,
+            Enable = 1,
+        }
+
+        public enum AddOnContentRegistrationTypeValue : byte
+        {
+            AllOnLaunch = 0,
+            OnDemand = 1,
+        }
+
+        [Flags]
+        public enum AttributeFlagValue
+        {
+            None = 0,
+            Demo = 1 << 0,
+            RetailInteractiveDisplay = 1 << 1,
+        }
+
+        public enum ParentalControlFlagValue
+        {
+            None = 0,
+            FreeCommunication = 1,
+        }
+
+        public enum ScreenshotValue : byte
+        {
+            Allow = 0,
+            Deny = 1,
+        }
+
+        public enum VideoCaptureValue : byte
+        {
+            Disable = 0,
+            Manual = 1,
+            Enable = 2,
+        }
+
+        public enum DataLossConfirmationValue : byte
+        {
+            None = 0,
+            Required = 1,
+        }
+
+        public enum PlayLogPolicyValue : byte
+        {
+            Open = 0,
+            LogOnly = 1,
+            None = 2,
+            Closed = 3,
+            All = Open,
+        }
+
+        public enum LogoTypeValue : byte
+        {
+            LicensedByNintendo = 0,
+            DistributedByNintendo = 1,
+            Nintendo = 2,
+        }
+
+        public enum LogoHandlingValue : byte
+        {
+            Auto = 0,
+            Manual = 1,
+        }
+
+        public enum RuntimeAddOnContentInstallValue : byte
+        {
+            Deny = 0,
+            AllowAppend = 1,
+            AllowAppendButDontDownloadWhenUsingNetwork = 2,
+        }
+
+        public enum RuntimeParameterDeliveryValue : byte
+        {
+            Always = 0,
+            AlwaysIfUserStateMatched = 1,
+            OnRestart = 2,
+        }
+
+        public enum CrashReportValue : byte
+        {
+            Deny = 0,
+            Allow = 1,
+        }
+
+        public enum HdcpValue : byte
+        {
+            None = 0,
+            Required = 1,
+        }
+
+        [Flags]
+        public enum StartupUserAccountOptionFlagValue : byte
+        {
+            None = 0,
+            IsOptional = 1 << 0,
+        }
+
+        public enum PlayLogQueryCapabilityValue : byte
+        {
+            None = 0,
+            WhiteList = 1,
+            All = 2,
+        }
+
+        [Flags]
+        public enum RepairFlagValue : byte
+        {
+            None = 0,
+            SuppressGameCardAccess = 1 << 0,
+        }
+
+        [Flags]
+        public enum RequiredNetworkServiceLicenseOnLaunchValue : byte
+        {
+            None = 0,
+            Common = 1 << 0,
+        }
+
+        [Flags]
+        public enum JitConfigurationFlag : ulong
+        {
+            None = 0,
+            Enabled = 1 << 0,
+        }
+
+        [Flags]
+        public enum PlayReportPermissionValue : byte
+        {
+            None = 0,
+            TargetMarketing = 1 << 0,
+        }
+
+        public enum CrashScreenshotForProdValue : byte
+        {
+            Deny = 0,
+            Allow = 1,
+        }
+
+        public enum CrashScreenshotForDevValue : byte
+        {
+            Deny = 0,
+            Allow = 1,
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/ServiceUtil.cs

@@ -35,5 +35,254 @@ namespace Ryujinx.Horizon.Sdk
 
             return CmifMessage.ParseResponse(out response, HorizonStatic.AddressSpace.GetWritableRegion(tlsAddress, tlsSize).Memory.Span, false, 0);
         }
+
+        public static Result SendRequest(
+            out CmifResponse response,
+            int sessionHandle,
+            uint requestId,
+            bool sendPid,
+            scoped ReadOnlySpan<byte> data,
+            ReadOnlySpan<HipcBufferFlags> bufferFlags,
+            ReadOnlySpan<PointerAndSize> buffers)
+        {
+            ulong tlsAddress = HorizonStatic.ThreadContext.TlsAddress;
+            int tlsSize = Api.TlsMessageBufferSize;
+
+            using (var tlsRegion = HorizonStatic.AddressSpace.GetWritableRegion(tlsAddress, tlsSize))
+            {
+                CmifRequestFormat format = new()
+                {
+                    DataSize = data.Length,
+                    RequestId = requestId,
+                    SendPid = sendPid,
+                };
+
+                for (int index = 0; index < bufferFlags.Length; index++)
+                {
+                    FormatProcessBuffer(ref format, bufferFlags[index]);
+                }
+
+                CmifRequest request = CmifMessage.CreateRequest(tlsRegion.Memory.Span, format);
+
+                for (int index = 0; index < buffers.Length; index++)
+                {
+                    RequestProcessBuffer(ref request, buffers[index], bufferFlags[index]);
+                }
+
+                data.CopyTo(request.Data);
+            }
+
+            Result result = HorizonStatic.Syscall.SendSyncRequest(sessionHandle);
+
+            if (result.IsFailure)
+            {
+                response = default;
+
+                return result;
+            }
+
+            return CmifMessage.ParseResponse(out response, HorizonStatic.AddressSpace.GetWritableRegion(tlsAddress, tlsSize).Memory.Span, false, 0);
+        }
+
+        private static void FormatProcessBuffer(ref CmifRequestFormat format, HipcBufferFlags flags)
+        {
+            if (flags == 0)
+            {
+                return;
+            }
+
+            bool isIn = flags.HasFlag(HipcBufferFlags.In);
+            bool isOut = flags.HasFlag(HipcBufferFlags.Out);
+
+            if (flags.HasFlag(HipcBufferFlags.AutoSelect))
+            {
+                if (isIn)
+                {
+                    format.InAutoBuffersCount++;
+                }
+
+                if (isOut)
+                {
+                    format.OutAutoBuffersCount++;
+                }
+            }
+            else if (flags.HasFlag(HipcBufferFlags.Pointer))
+            {
+                if (isIn)
+                {
+                    format.InPointersCount++;
+                }
+
+                if (isOut)
+                {
+                    if (flags.HasFlag(HipcBufferFlags.FixedSize))
+                    {
+                        format.OutFixedPointersCount++;
+                    }
+                    else
+                    {
+                        format.OutPointersCount++;
+                    }
+                }
+            }
+            else if (flags.HasFlag(HipcBufferFlags.MapAlias))
+            {
+                if (isIn && isOut)
+                {
+                    format.InOutBuffersCount++;
+                }
+                else if (isIn)
+                {
+                    format.InBuffersCount++;
+                }
+                else
+                {
+                    format.OutBuffersCount++;
+                }
+            }
+        }
+
+        private static void RequestProcessBuffer(ref CmifRequest request, PointerAndSize buffer, HipcBufferFlags flags)
+        {
+            if (flags == 0)
+            {
+                return;
+            }
+
+            bool isIn = flags.HasFlag(HipcBufferFlags.In);
+            bool isOut = flags.HasFlag(HipcBufferFlags.Out);
+
+            if (flags.HasFlag(HipcBufferFlags.AutoSelect))
+            {
+                HipcBufferMode mode = HipcBufferMode.Normal;
+
+                if (flags.HasFlag(HipcBufferFlags.MapTransferAllowsNonSecure))
+                {
+                    mode = HipcBufferMode.NonSecure;
+                }
+
+                if (flags.HasFlag(HipcBufferFlags.MapTransferAllowsNonDevice))
+                {
+                    mode = HipcBufferMode.NonDevice;
+                }
+
+                if (isIn)
+                {
+                    RequestInAutoBuffer(ref request, buffer.Address, buffer.Size, mode);
+                }
+
+                if (isOut)
+                {
+                    RequestOutAutoBuffer(ref request, buffer.Address, buffer.Size, mode);
+                }
+            }
+            else if (flags.HasFlag(HipcBufferFlags.Pointer))
+            {
+                if (isIn)
+                {
+                    RequestInPointer(ref request, buffer.Address, buffer.Size);
+                }
+
+                if (isOut)
+                {
+                    if (flags.HasFlag(HipcBufferFlags.FixedSize))
+                    {
+                        RequestOutFixedPointer(ref request, buffer.Address, buffer.Size);
+                    }
+                    else
+                    {
+                        RequestOutPointer(ref request, buffer.Address, buffer.Size);
+                    }
+                }
+            }
+            else if (flags.HasFlag(HipcBufferFlags.MapAlias))
+            {
+                HipcBufferMode mode = HipcBufferMode.Normal;
+
+                if (flags.HasFlag(HipcBufferFlags.MapTransferAllowsNonSecure))
+                {
+                    mode = HipcBufferMode.NonSecure;
+                }
+
+                if (flags.HasFlag(HipcBufferFlags.MapTransferAllowsNonDevice))
+                {
+                    mode = HipcBufferMode.NonDevice;
+                }
+
+                if (isIn && isOut)
+                {
+                    RequestInOutBuffer(ref request, buffer.Address, buffer.Size, mode);
+                }
+                else if (isIn)
+                {
+                    RequestInBuffer(ref request, buffer.Address, buffer.Size, mode);
+                }
+                else
+                {
+                    RequestOutBuffer(ref request, buffer.Address, buffer.Size, mode);
+                }
+            }
+        }
+
+        private static void RequestInAutoBuffer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize, HipcBufferMode mode)
+        {
+            if (request.ServerPointerSize != 0 && bufferSize <= (ulong)request.ServerPointerSize)
+            {
+                RequestInPointer(ref request, bufferAddress, bufferSize);
+                RequestInBuffer(ref request, 0UL, 0UL, mode);
+            }
+            else
+            {
+                RequestInPointer(ref request, 0UL, 0UL);
+                RequestInBuffer(ref request, bufferAddress, bufferSize, mode);
+            }
+        }
+
+        private static void RequestOutAutoBuffer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize, HipcBufferMode mode)
+        {
+            if (request.ServerPointerSize != 0 && bufferSize <= (ulong)request.ServerPointerSize)
+            {
+                RequestOutPointer(ref request, bufferAddress, bufferSize);
+                RequestOutBuffer(ref request, 0UL, 0UL, mode);
+            }
+            else
+            {
+                RequestOutPointer(ref request, 0UL, 0UL);
+                RequestOutBuffer(ref request, bufferAddress, bufferSize, mode);
+            }
+        }
+
+        private static void RequestInBuffer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize, HipcBufferMode mode)
+        {
+            request.Hipc.SendBuffers[request.SendBufferIndex++] = new HipcBufferDescriptor(bufferAddress, bufferSize, mode);
+        }
+
+        private static void RequestOutBuffer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize, HipcBufferMode mode)
+        {
+            request.Hipc.ReceiveBuffers[request.RecvBufferIndex++] = new HipcBufferDescriptor(bufferAddress, bufferSize, mode);
+        }
+
+        private static void RequestInOutBuffer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize, HipcBufferMode mode)
+        {
+            request.Hipc.ExchangeBuffers[request.ExchBufferIndex++] = new HipcBufferDescriptor(bufferAddress, bufferSize, mode);
+        }
+
+        private static void RequestInPointer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize)
+        {
+            request.Hipc.SendStatics[request.SendStaticIndex++] = new HipcStaticDescriptor(bufferAddress, (ushort)bufferSize, request.CurrentInPointerId++);
+            request.ServerPointerSize -= (int)bufferSize;
+        }
+
+        private static void RequestOutFixedPointer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize)
+        {
+            request.Hipc.ReceiveList[request.RecvListIndex++] = new HipcReceiveListEntry(bufferAddress, (ushort)bufferSize);
+            request.ServerPointerSize -= (int)bufferSize;
+        }
+
+        private static void RequestOutPointer(ref CmifRequest request, ulong bufferAddress, ulong bufferSize)
+        {
+            RequestOutFixedPointer(ref request, bufferAddress, bufferSize);
+            request.OutPointerSizes[request.OutPointerSizeIndex++] = (ushort)bufferSize;
+        }
     }
 }

src/Ryujinx.Horizon/Sdk/Sf/Cmif/CmifRequest.cs

@@ -10,5 +10,12 @@ namespace Ryujinx.Horizon.Sdk.Sf.Cmif
         public Span<ushort> OutPointerSizes;
         public Span<uint> Objects;
         public int ServerPointerSize;
+        public int CurrentInPointerId;
+        public int SendBufferIndex;
+        public int RecvBufferIndex;
+        public int ExchBufferIndex;
+        public int SendStaticIndex;
+        public int RecvListIndex;
+        public int OutPointerSizeIndex;
     }
 }

src/Ryujinx.Horizon/Sdk/Sf/Hipc/HipcBufferDescriptor.cs

@@ -11,5 +11,12 @@ namespace Ryujinx.Horizon.Sdk.Sf.Hipc
         public ulong Address => _addressLow | (((ulong)_word2 << 4) & 0xf00000000UL) | (((ulong)_word2 << 34) & 0x7000000000UL);
         public ulong Size => _sizeLow | ((ulong)_word2 << 8) & 0xf00000000UL;
         public HipcBufferMode Mode => (HipcBufferMode)(_word2 & 3);
+
+        public HipcBufferDescriptor(ulong address, ulong size, HipcBufferMode mode)
+        {
+            _sizeLow = (uint)size;
+            _addressLow = (uint)address;
+            _word2 = (uint)mode | ((uint)(address >> 34) & 0x1c) | ((uint)(size >> 32) << 24) | ((uint)(address >> 4) & 0xf0000000);
+        }
     }
 }

src/Ryujinx.Horizon/ServiceTable.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Horizon.Arp;
 using Ryujinx.Horizon.Bcat;
 using Ryujinx.Horizon.Hshl;
 using Ryujinx.Horizon.Ins;
@@ -8,6 +9,7 @@ using Ryujinx.Horizon.Ngc;
 using Ryujinx.Horizon.Ovln;
 using Ryujinx.Horizon.Prepo;
 using Ryujinx.Horizon.Psc;
+using Ryujinx.Horizon.Sdk.Arp;
 using Ryujinx.Horizon.Srepo;
 using Ryujinx.Horizon.Usb;
 using Ryujinx.Horizon.Wlan;
@@ -23,6 +25,9 @@ namespace Ryujinx.Horizon
 
         private readonly ManualResetEvent _servicesReadyEvent = new(false);
 
+        public IReader ArpReader { get; internal set; }
+        public IWriter ArpWriter { get; internal set; }
+
         public IEnumerable<ServiceEntry> GetServices(HorizonOptions options)
         {
             List<ServiceEntry> entries = new();
@@ -32,6 +37,7 @@ namespace Ryujinx.Horizon
                 entries.Add(new ServiceEntry(T.Main, this, options));
             }
 
+            RegisterService<ArpMain>();
             RegisterService<BcatMain>();
             RegisterService<HshlMain>();
             RegisterService<InsMain>();

src/Ryujinx.Tests/Cpu/CpuTestSimdShImm.cs

@@ -311,6 +311,46 @@ namespace Ryujinx.Tests.Cpu
             };
         }
 
+        private static uint[] _ShlImm_S_D_()
+        {
+            return new[]
+            {
+                0x5F407400u, // SQSHL D0, D0, #0
+            };
+        }
+
+        private static uint[] _ShlImm_V_8B_16B_()
+        {
+            return new[]
+            {
+                0x0F087400u, // SQSHL V0.8B, V0.8B, #0
+            };
+        }
+
+        private static uint[] _ShlImm_V_4H_8H_()
+        {
+            return new[]
+            {
+                0x0F107400u, // SQSHL V0.4H, V0.4H, #0
+            };
+        }
+
+        private static uint[] _ShlImm_V_2S_4S_()
+        {
+            return new[]
+            {
+                0x0F207400u, // SQSHL V0.2S, V0.2S, #0
+            };
+        }
+
+        private static uint[] _ShlImm_V_2D_()
+        {
+            return new[]
+            {
+                0x4F407400u, // SQSHL V0.2D, V0.2D, #0
+            };
+        }
+
         private static uint[] _ShrImm_Sri_S_D_()
         {
             return new[]
@@ -813,6 +853,117 @@ namespace Ryujinx.Tests.Cpu
             CompareAgainstUnicorn();
         }
 
+        [Test, Pairwise]
+        public void ShlImm_S_D([ValueSource(nameof(_ShlImm_S_D_))] uint opcodes,
+                               [Values(0u)] uint rd,
+                               [Values(1u, 0u)] uint rn,
+                               [ValueSource(nameof(_1D_))] ulong z,
+                               [ValueSource(nameof(_1D_))] ulong a,
+                               [Values(1u, 64u)] uint shift)
+        {
+            uint immHb = (64 + shift) & 0x7F;
+
+            opcodes |= ((rn & 31) << 5) | ((rd & 31) << 0);
+            opcodes |= (immHb << 16);
+
+            V128 v0 = MakeVectorE0E1(z, z);
+            V128 v1 = MakeVectorE0(a);
+
+            SingleOpcode(opcodes, v0: v0, v1: v1);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void ShlImm_V_8B_16B([ValueSource(nameof(_ShlImm_V_8B_16B_))] uint opcodes,
+                                    [Values(0u)] uint rd,
+                                    [Values(1u, 0u)] uint rn,
+                                    [ValueSource(nameof(_8B_))] ulong z,
+                                    [ValueSource(nameof(_8B_))] ulong a,
+                                    [Values(1u, 8u)] uint shift,
+                                    [Values(0b0u, 0b1u)] uint q) // <8B, 16B>
+        {
+            uint immHb = (8 + shift) & 0x7F;
+
+            opcodes |= ((rn & 31) << 5) | ((rd & 31) << 0);
+            opcodes |= (immHb << 16);
+            opcodes |= ((q & 1) << 30);
+
+            V128 v0 = MakeVectorE0E1(z, z);
+            V128 v1 = MakeVectorE0E1(a, a * q);
+
+            SingleOpcode(opcodes, v0: v0, v1: v1);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void ShlImm_V_4H_8H([ValueSource(nameof(_ShlImm_V_4H_8H_))] uint opcodes,
+                                   [Values(0u)] uint rd,
+                                   [Values(1u, 0u)] uint rn,
+                                   [ValueSource(nameof(_4H_))] ulong z,
+                                   [ValueSource(nameof(_4H_))] ulong a,
+                                   [Values(1u, 16u)] uint shift,
+                                   [Values(0b0u, 0b1u)] uint q) // <4H, 8H>
+        {
+            uint immHb = (16 + shift) & 0x7F;
+
+            opcodes |= ((rn & 31) << 5) | ((rd & 31) << 0);
+            opcodes |= (immHb << 16);
+            opcodes |= ((q & 1) << 30);
+
+            V128 v0 = MakeVectorE0E1(z, z);
+            V128 v1 = MakeVectorE0E1(a, a * q);
+
+            SingleOpcode(opcodes, v0: v0, v1: v1);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void ShlImm_V_2S_4S([ValueSource(nameof(_ShlImm_V_2S_4S_))] uint opcodes,
+                                   [Values(0u)] uint rd,
+                                   [Values(1u, 0u)] uint rn,
+                                   [ValueSource(nameof(_2S_))] ulong z,
+                                   [ValueSource(nameof(_2S_))] ulong a,
+                                   [Values(1u, 32u)] uint shift,
+                                   [Values(0b0u, 0b1u)] uint q) // <2S, 4S>
+        {
+            uint immHb = (32 + shift) & 0x7F;
+
+            opcodes |= ((rn & 31) << 5) | ((rd & 31) << 0);
+            opcodes |= (immHb << 16);
+            opcodes |= (((q | (immHb >> 6)) & 1) << 30);
+
+            V128 v0 = MakeVectorE0E1(z, z);
+            V128 v1 = MakeVectorE0E1(a, a * q);
+
+            SingleOpcode(opcodes, v0: v0, v1: v1);
+
+            CompareAgainstUnicorn();
+        }
+
+        [Test, Pairwise]
+        public void ShlImm_V_2D([ValueSource(nameof(_ShlImm_V_2D_))] uint opcodes,
+                                [Values(0u)] uint rd,
+                                [Values(1u, 0u)] uint rn,
+                                [ValueSource(nameof(_1D_))] ulong z,
+                                [ValueSource(nameof(_1D_))] ulong a,
+                                [Values(1u, 64u)] uint shift)
+        {
+            uint immHb = (64 + shift) & 0x7F;
+
+            opcodes |= ((rn & 31) << 5) | ((rd & 31) << 0);
+            opcodes |= (immHb << 16);
+
+            V128 v0 = MakeVectorE0E1(z, z);
+            V128 v1 = MakeVectorE0E1(a, a);
+
+            SingleOpcode(opcodes, v0: v0, v1: v1);
+
+            CompareAgainstUnicorn();
+        }
+
         [Test, Pairwise]
         public void ShrImm_Sri_S_D([ValueSource(nameof(_ShrImm_Sri_S_D_))] uint opcodes,
                                    [Values(0u)] uint rd,

src/Ryujinx/Ui/RendererWidgetBase.cs

@@ -77,7 +77,7 @@ namespace Ryujinx.Ui
         private readonly IKeyboard _keyboardInterface;
         private readonly GraphicsDebugLevel _glLogLevel;
         private string _gpuBackendName;
-        private string _gpuVendorName;
+        private string _gpuDriverName;
         private bool _isMouseInClient;
 
         public RendererWidgetBase(InputManager inputManager, GraphicsDebugLevel glLogLevel)
@@ -141,9 +141,9 @@ namespace Ryujinx.Ui
 
         protected abstract string GetGpuBackendName();
 
-        private string GetGpuVendorName()
+        private string GetGpuDriverName()
         {
-            return Renderer.GetHardwareInfo().GpuVendor;
+            return Renderer.GetHardwareInfo().GpuDriver;
         }
 
         private void HideCursorStateChanged(object sender, ReactiveEventArgs<HideCursorMode> state)
@@ -443,7 +443,7 @@ namespace Ryujinx.Ui
             Renderer.Window.SetScalingFilterLevel(ConfigurationState.Instance.Graphics.ScalingFilterLevel.Value);
 
             _gpuBackendName = GetGpuBackendName();
-            _gpuVendorName = GetGpuVendorName();
+            _gpuDriverName = GetGpuDriverName();
 
             Device.Gpu.Renderer.RunLoop(() =>
             {
@@ -494,7 +494,7 @@ namespace Ryujinx.Ui
                             ConfigurationState.Instance.Graphics.AspectRatio.Value.ToText(),
                             $"Game: {Device.Statistics.GetGameFrameRate():00.00} FPS ({Device.Statistics.GetGameFrameTime():00.00} ms)",
                             $"FIFO: {Device.Statistics.GetFifoPercent():0.00} %",
-                            $"GPU: {_gpuVendorName}"));
+                            $"GPU: {_gpuDriverName}"));
 
                         _ticks = Math.Min(_ticks - _ticksPerFrame, _ticksPerFrame);
                     }

src/Ryujinx/Ui/Widgets/GameTableContextMenu.cs

@@ -497,7 +497,7 @@ namespace Ryujinx.Ui.Widgets
         private void OpenTitleModDir_Clicked(object sender, EventArgs args)
         {
             string modsBasePath = ModLoader.GetModsBasePath();
-            string titleModsPath = ModLoader.GetTitleDir(modsBasePath, _titleIdText);
+            string titleModsPath = ModLoader.GetApplicationDir(modsBasePath, _titleIdText);
 
             OpenHelper.OpenFolder(titleModsPath);
         }
@@ -505,7 +505,7 @@ namespace Ryujinx.Ui.Widgets
         private void OpenTitleSdModDir_Clicked(object sender, EventArgs args)
         {
             string sdModsBasePath = ModLoader.GetSdModsBasePath();
-            string titleModsPath = ModLoader.GetTitleDir(sdModsBasePath, _titleIdText);
+            string titleModsPath = ModLoader.GetApplicationDir(sdModsBasePath, _titleIdText);
 
             OpenHelper.OpenFolder(titleModsPath);
         }

src/Ryujinx/Ui/Windows/CheatWindow.cs

@@ -31,7 +31,7 @@ namespace Ryujinx.Ui.Windows
             _buildIdTextView.Buffer.Text = $"BuildId: {ApplicationData.GetApplicationBuildId(virtualFileSystem, titlePath)}";
 
             string modsBasePath = ModLoader.GetModsBasePath();
-            string titleModsPath = ModLoader.GetTitleDir(modsBasePath, titleId.ToString("X16"));
+            string titleModsPath = ModLoader.GetApplicationDir(modsBasePath, titleId.ToString("X16"));
 
             _enabledCheatsPath = System.IO.Path.Combine(titleModsPath, "cheats", "enabled.txt");