Windows Fullscreen Fixes (#87)

This PR fixes two bugs introduced in #80 :
- Exiting fullscreen could exit the Ryujinx window  (https://github.com/Ryubing/Issues/issues/415)
- Toggling fullscreen on would move the window to the primary monitor

And two other bugs related to input view :
- Exiting fullscreen when window was previously in a non maximized state now conserves the window coordinates and size properly (https://github.com/Ryubing/Issues/issues/425)
- Opening the ryujinx app no makes the app grow slightly larger vertically on each launch (+31px on my 1080p monitor) (https://github.com/Ryubing/Issues/issues/425)

Reviewed-on: https://git.ryujinx.app/projects/Ryubing/pulls/87

src/ARMeilleure/Translation/PTC/Ptc.cs

@@ -110,7 +110,7 @@ namespace ARMeilleure.Translation.PTC
             Profiler.Wait();
             Profiler.ClearEntries();
 
-            Logger.Info?.Print(LogClass.Ptc, $"Initializing Profiled Persistent Translation Cache (enabled: {enabled}).");
+            Logger.Info?.Print(LogClass.Ptc, $"Initializing Profiled Persistent Translation Cache v{InternalVersion}\n\t\t (title: {titleIdText}, version: '{displayVersion}', selector: '{cacheSelector}', enabled: {enabled}).");
 
             if (!enabled || string.IsNullOrEmpty(titleIdText) || titleIdText == TitleIdTextDefault)
             {
@@ -129,8 +129,6 @@ namespace ARMeilleure.Translation.PTC
             DisplayVersion = !string.IsNullOrEmpty(displayVersion) ? displayVersion : DisplayVersionDefault;
             _memoryMode = memoryMode;
 
-            Logger.Info?.Print(LogClass.Ptc, $"PPTC (v{InternalVersion}) Profile: {DisplayVersion}-{cacheSelector}");
-
             string workPathActual = Path.Combine(AppDataManager.GamesDirPath, TitleIdText, "cache", "cpu", ActualDir);
             string workPathBackup = Path.Combine(AppDataManager.GamesDirPath, TitleIdText, "cache", "cpu", BackupDir);
 

src/Ryujinx.HLE/HOS/ArmProcessContextFactory.cs

@@ -118,7 +118,9 @@ namespace Ryujinx.HLE.HOS
                 }
             }
 
-            DiskCacheLoadState = processContext.Initialize(_titleIdText, _displayVersion, _diskCacheEnabled, _codeAddress, _codeSize, _diskCacheSelector ?? "default");
+            string cacheSelector = _diskCacheSelector ?? "default";
+
+            DiskCacheLoadState = processContext.Initialize(_titleIdText, _displayVersion, _diskCacheEnabled, _codeAddress, _codeSize, cacheSelector);
 
             return processContext;
         }

src/Ryujinx.HLE/HOS/ServiceCtx.cs

@@ -16,6 +16,7 @@ namespace Ryujinx.HLE.HOS
         public IpcMessage Response { get; }
         public BinaryReader RequestData { get; }
         public BinaryWriter ResponseData { get; }
+        public ulong ClientProcessId => Request.HandleDesc.HasPId ? Request.HandleDesc.PId : Process.Pid;
 
         public ServiceCtx(
             Switch device,

src/Ryujinx.HLE/HOS/Services/Account/Acc/IAccountServiceForApplication.cs

@@ -190,7 +190,7 @@ namespace Ryujinx.HLE.HOS.Services.Account.Acc
             // TODO: Account actually calls nn::arp::detail::IReader::GetApplicationControlProperty() with the current Pid and store the result (NACP file) internally.
             //       But since we use LibHac and we load one Application at a time, it's not necessary.
 
-            context.ResponseData.Write((byte)context.Device.Processes.ActiveApplication.ApplicationControlProperties.UserAccountSwitchLock);
+            context.ResponseData.Write((byte)context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties.UserAccountSwitchLock);
 
             Logger.Stub?.PrintStub(LogClass.ServiceAcc);
 

src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/ILibraryAppletProxy.cs

@@ -79,7 +79,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletAE.AllSystemAppletProxiesService
         // OpenLibraryAppletSelfAccessor() -> object<nn::am::service::ILibraryAppletSelfAccessor>
         public ResultCode OpenLibraryAppletSelfAccessor(ServiceCtx context)
         {
-            MakeObject(context, new ILibraryAppletSelfAccessor(context));
+            MakeObject(context, new ILibraryAppletSelfAccessor(context, _pid));
 
             return ResultCode.Success;
         }

src/Ryujinx.HLE/HOS/Services/Am/AppletAE/AllSystemAppletProxiesService/LibraryAppletProxy/ILibraryAppletSelfAccessor.cs

@@ -8,9 +8,11 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletAE.AllSystemAppletProxiesService.Lib
     {
         private readonly AppletStandalone _appletStandalone = new();
 
-        public ILibraryAppletSelfAccessor(ServiceCtx context)
+        public ILibraryAppletSelfAccessor(ServiceCtx context, ulong pid)
         {
-            if (context.Device.Processes.ActiveApplication.ProgramId == 0x0100000000001009)
+            ulong programId = context.Device.Processes.GetProcess(pid).ProgramId;
+
+            if (programId == 0x0100000000001009)
             {
                 // Create MiiEdit data.
                 _appletStandalone = new AppletStandalone()
@@ -26,7 +28,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletAE.AllSystemAppletProxiesService.Lib
             }
             else
             {
-                throw new NotImplementedException($"{context.Device.Processes.ActiveApplication.ProgramId} applet is not implemented.");
+                throw new NotImplementedException($"{programId} applet is not implemented.");
             }
         }
 

src/Ryujinx.HLE/HOS/Services/Am/AppletOE/ApplicationProxyService/ApplicationProxy/IApplicationFunctions.cs

@@ -44,8 +44,9 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
         private int _jitLoaded;
 
         private readonly LibHac.HorizonClient _horizon;
+        private readonly ulong _pid;
 
-        public IApplicationFunctions(Horizon system)
+        public IApplicationFunctions(Horizon system, ulong pid)
         {
             // TODO: Find where they are signaled.
             _gpuErrorDetectedSystemEvent = new KEvent(system.KernelContext);
@@ -55,6 +56,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
             _unknownEvent = new KEvent(system.KernelContext);
 
             _horizon = system.LibHacHorizonManager.AmClient;
+            _pid = pid;
         }
 
         [CommandCmif(1)]
@@ -115,11 +117,12 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
         public ResultCode EnsureSaveData(ServiceCtx context)
         {
             Uid userId = context.RequestData.ReadStruct<AccountUid>().ToLibHacUid();
+            var process = context.Device.Processes.GetProcess(_pid);
 
             // Mask out the low nibble of the program ID to get the application ID
-            ApplicationId applicationId = new(context.Device.Processes.ActiveApplication.ProgramId & ~0xFul);
+            ApplicationId applicationId = new(process.Identity.ApplicationId);
 
-            ApplicationControlProperty nacp = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+            ApplicationControlProperty nacp = process.ApplicationControlProperties;
 
             LibHac.HorizonClient hos = context.Device.System.LibHacHorizonManager.AmClient;
             LibHac.Result result = hos.Fs.EnsureApplicationSaveData(out long requiredSize, applicationId, in nacp, in userId);
@@ -139,7 +142,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
             // TODO: When above calls are implemented, switch to using ns:am
 
             long desiredLanguageCode = context.Device.System.State.DesiredLanguageCode;
-            int supportedLanguages = (int)context.Device.Processes.ActiveApplication.ApplicationControlProperties.SupportedLanguageFlag;
+            int supportedLanguages = (int)context.Device.Processes.GetProcess(_pid).ApplicationControlProperties.SupportedLanguageFlag;
             int firstSupported = BitOperations.TrailingZeroCount(supportedLanguages);
 
             if (firstSupported > (int)TitleLanguage.BrazilianPortuguese)
@@ -182,7 +185,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
         public ResultCode GetDisplayVersion(ServiceCtx context)
         {
             // If an NACP isn't found, the buffer will be all '\0' which seems to be the correct implementation.
-            context.ResponseData.Write(context.Device.Processes.ActiveApplication.ApplicationControlProperties.DisplayVersion);
+            context.ResponseData.Write(context.Device.Processes.GetProcess(_pid).ApplicationControlProperties.DisplayVersion);
 
             return ResultCode.Success;
         }
@@ -235,11 +238,12 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.Applicati
             ushort index = (ushort)context.RequestData.ReadUInt64();
             long saveSize = context.RequestData.ReadInt64();
             long journalSize = context.RequestData.ReadInt64();
+            var process = context.Device.Processes.GetProcess(_pid);
 
             // Mask out the low nibble of the program ID to get the application ID
-            ApplicationId applicationId = new(context.Device.Processes.ActiveApplication.ProgramId & ~0xFul);
+            ApplicationId applicationId = new(process.Identity.ApplicationId);
 
-            ApplicationControlProperty nacp = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+            ApplicationControlProperty nacp = process.ApplicationControlProperties;
 
             LibHac.Result result = _horizon.Fs.CreateApplicationCacheStorage(out long requiredSize,
                 out CacheStorageTargetMedia storageTarget, applicationId, in nacp, index, saveSize, journalSize);

src/Ryujinx.HLE/HOS/Services/Am/AppletOE/ApplicationProxyService/IApplicationProxy.cs

@@ -70,7 +70,7 @@ namespace Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService
         // GetApplicationFunctions() -> object<nn::am::service::IApplicationFunctions>
         public ResultCode GetApplicationFunctions(ServiceCtx context)
         {
-            MakeObject(context, new IApplicationFunctions(context.Device.System));
+            MakeObject(context, new IApplicationFunctions(context.Device.System, _pid));
 
             return ResultCode.Success;
         }

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

@@ -27,13 +27,18 @@ namespace Ryujinx.HLE.HOS.Services.Arp
         }
 
         public static ApplicationLaunchProperty GetByPid(ServiceCtx context)
+        {
+            return GetByPid(context, context.ClientProcessId);
+        }
+
+        public static ApplicationLaunchProperty GetByPid(ServiceCtx context, ulong pid)
         {
             // TODO: Handle ApplicationLaunchProperty as array when pid will be supported and return the right item.
             //       For now we can hardcode values, and fix it after GetApplicationLaunchProperty is implemented.
 
             return new ApplicationLaunchProperty
             {
-                TitleId = context.Device.Processes.ActiveApplication.ProgramId,
+                TitleId = context.Device.Processes.GetProcess(pid).ProgramId,
                 Version = 0x00,
                 BaseGameStorageId = (byte)StorageId.BuiltInSystem,
                 UpdateGameStorageId = (byte)StorageId.None,

src/Ryujinx.HLE/HOS/Services/Caps/IScreenShotApplicationService.cs

@@ -50,7 +50,7 @@ namespace Ryujinx.HLE.HOS.Services.Caps
 
             byte[] screenshotData = context.Memory.GetSpan(screenshotDataPosition, (int)screenshotDataSize, true).ToArray();
 
-            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.ActiveApplication.ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
+            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.GetProcess(context.ClientProcessId).ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
 
             context.ResponseData.WriteStruct(applicationAlbumEntry);
 
@@ -98,7 +98,7 @@ namespace Ryujinx.HLE.HOS.Services.Caps
 
             byte[] screenshotData = context.Memory.GetSpan(screenshotDataPosition, (int)screenshotDataSize, true).ToArray();
 
-            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.ActiveApplication.ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
+            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.GetProcess(context.ClientProcessId).ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
 
             context.ResponseData.WriteStruct(applicationAlbumEntry);
 
@@ -143,7 +143,7 @@ namespace Ryujinx.HLE.HOS.Services.Caps
 
             byte[] screenshotData = context.Memory.GetSpan(screenshotDataPosition, (int)screenshotDataSize, true).ToArray();
 
-            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.ActiveApplication.ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
+            ResultCode resultCode = context.Device.System.CaptureManager.SaveScreenShot(screenshotData, appletResourceUserId, context.Device.Processes.GetProcess(context.ClientProcessId).ProgramId, out ApplicationAlbumEntry applicationAlbumEntry);
 
             context.ResponseData.WriteStruct(applicationAlbumEntry);
 

src/Ryujinx.HLE/HOS/Services/Fatal/IService.cs

@@ -1,5 +1,6 @@
 using Ryujinx.Common.Logging;
 using Ryujinx.HLE.HOS.Services.Fatal.Types;
+using Ryujinx.HLE.Loaders.Processes;
 using System;
 using System.Runtime.InteropServices;
 using System.Text;
@@ -50,12 +51,13 @@ namespace Ryujinx.HLE.HOS.Services.Fatal
 
         private ResultCode ThrowFatalWithCpuContextImpl(ServiceCtx context, ResultCode resultCode, ulong pid, FatalPolicy fatalPolicy, ReadOnlySpan<byte> cpuContext)
         {
+            ProcessResult process = context.Device.Processes.GetProcess(pid);
             StringBuilder errorReport = new();
 
             errorReport.AppendLine();
             errorReport.AppendLine("ErrorReport log:");
 
-            errorReport.AppendLine($"\tTitleId: {context.Device.Processes.ActiveApplication.ProgramIdText}");
+            errorReport.AppendLine($"\tTitleId: {process.ProgramIdText}");
             errorReport.AppendLine($"\tPid: {pid}");
             errorReport.AppendLine($"\tResultCode: {((int)resultCode & 0x1FF) + 2000}-{((int)resultCode >> 9) & 0x3FFF:d4}");
             errorReport.AppendLine($"\tFatalPolicy: {fatalPolicy}");
@@ -64,7 +66,7 @@ namespace Ryujinx.HLE.HOS.Services.Fatal
             {
                 errorReport.AppendLine("CPU Context:");
 
-                if (context.Device.Processes.ActiveApplication.Is64Bit)
+                if (process.Is64Bit)
                 {
                     CpuContext64 cpuContext64 = MemoryMarshal.Cast<byte, CpuContext64>(cpuContext)[0];
 

src/Ryujinx.HLE/HOS/Services/Fs/IFileSystemProxy.cs

@@ -885,7 +885,7 @@ namespace Ryujinx.HLE.HOS.Services.Fs
         {
             byte programIndex = context.RequestData.ReadByte();
 
-            if ((context.Device.Processes.ActiveApplication.ProgramId & 0xf) != programIndex)
+            if (context.Device.Processes.GetProcess(_pid).Identity.ProgramIndex != programIndex)
             {
                 throw new NotImplementedException($"Accessing storage from other programs is not supported (program index = {programIndex}).");
             }

src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/IUserLocalCommunicationService.cs

@@ -60,7 +60,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
         private bool CheckLocalCommunicationIdPermission(ServiceCtx context, ulong localCommunicationIdChecked)
         {
             // TODO: Call nn::arp::GetApplicationControlProperty here when implemented.
-            ApplicationControlProperty controlProperty = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+            ApplicationControlProperty controlProperty = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
             foreach (ulong localCommunicationId in controlProperty.LocalCommunicationId)
             {
@@ -438,7 +438,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
                                 if (scanFilter.NetworkId.IntentId.LocalCommunicationId == -1 && NetworkClient.NeedsRealId)
                                 {
                                     // TODO: Call nn::arp::GetApplicationControlProperty here when implemented.
-                                    ApplicationControlProperty controlProperty = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+                                    ApplicationControlProperty controlProperty = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
                                     scanFilter.NetworkId.IntentId.LocalCommunicationId = (long)controlProperty.LocalCommunicationId[0];
                                 }
@@ -613,7 +613,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
             if (networkConfig.IntentId.LocalCommunicationId == -1 && NetworkClient.NeedsRealId)
             {
                 // TODO: Call nn::arp::GetApplicationControlProperty here when implemented.
-                ApplicationControlProperty controlProperty = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+                ApplicationControlProperty controlProperty = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
                 networkConfig.IntentId.LocalCommunicationId = (long)controlProperty.LocalCommunicationId[0];
             }
@@ -948,7 +948,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
             if (networkInfo.NetworkId.IntentId.LocalCommunicationId == -1 && NetworkClient.NeedsRealId)
             {
                 // TODO: Call nn::arp::GetApplicationControlProperty here when implemented.
-                ApplicationControlProperty controlProperty = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+                ApplicationControlProperty controlProperty = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
                 networkInfo.NetworkId.IntentId.LocalCommunicationId = (long)controlProperty.LocalCommunicationId[0];
             }
@@ -1208,7 +1208,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
                         }
 
                         // TODO: Call nn::arp::GetApplicationLaunchProperty here when implemented.
-                        NetworkClient.SetGameVersion(context.Device.Processes.ActiveApplication.ApplicationControlProperties.DisplayVersion);
+                        NetworkClient.SetGameVersion(context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties.DisplayVersion);
 
                         resultCode = ResultCode.Success;
                         _nifmResultCode = resultCode;

src/Ryujinx.HLE/HOS/Services/Ns/Aoc/IAddOnContentManager.cs

@@ -50,7 +50,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
 
             // NOTE: Service call arp:r GetApplicationLaunchProperty to get TitleId using the PId.
 
-            return CountAddOnContentImpl(context, context.Device.Processes.ActiveApplication.ProgramId);
+            return CountAddOnContentImpl(context, context.Device.Processes.GetProcess(pid).ProgramId);
         }
 
         [CommandCmif(3)]
@@ -63,7 +63,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
 
             // NOTE: Service call arp:r GetApplicationLaunchProperty to get TitleId using the PId.
 
-            return ListAddContentImpl(context, context.Device.Processes.ActiveApplication.ProgramId);
+            return ListAddContentImpl(context, context.Device.Processes.GetProcess(pid).ProgramId);
         }
 
         [CommandCmif(4)] // 1.0.0-6.2.0
@@ -85,7 +85,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
 
             // NOTE: Service call arp:r GetApplicationLaunchProperty to get TitleId using the PId.
 
-            return GetAddOnContentBaseIdImpl(context, context.Device.Processes.ActiveApplication.ProgramId);
+            return GetAddOnContentBaseIdImpl(context, context.Device.Processes.GetProcess(pid).ProgramId);
         }
 
         [CommandCmif(6)] // 1.0.0-6.2.0
@@ -107,7 +107,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
 
             // NOTE: Service call arp:r GetApplicationLaunchProperty to get TitleId using the PId.
 
-            return PrepareAddOnContentImpl(context, context.Device.Processes.ActiveApplication.ProgramId);
+            return PrepareAddOnContentImpl(context, context.Device.Processes.GetProcess(pid).ProgramId);
         }
 
         [CommandCmif(8)] // 4.0.0+
@@ -138,7 +138,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
             // NOTE: Service call arp:r GetApplicationLaunchProperty to get TitleId using the PId.
 
             // TODO: Found where stored value is used.
-            ResultCode resultCode = GetAddOnContentBaseIdFromTitleId(context, context.Device.Processes.ActiveApplication.ProgramId);
+            ResultCode resultCode = GetAddOnContentBaseIdFromTitleId(context, context.Device.Processes.GetProcess(pid).ProgramId);
 
             if (resultCode != ResultCode.Success)
             {
@@ -310,7 +310,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
             // NOTE: Service calls arp:r GetApplicationControlProperty to get AddOnContentBaseId using TitleId,
             //       If the call fails, it returns ResultCode.InvalidPid.
 
-            _addOnContentBaseId = context.Device.Processes.ActiveApplication.ApplicationControlProperties.AddOnContentBaseId;
+            _addOnContentBaseId = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties.AddOnContentBaseId;
 
             if (_addOnContentBaseId == 0)
             {
@@ -324,7 +324,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns.Aoc
         {
             uint index = context.RequestData.ReadUInt32();
 
-            ResultCode resultCode = GetAddOnContentBaseIdFromTitleId(context, context.Device.Processes.ActiveApplication.ProgramId);
+            ResultCode resultCode = GetAddOnContentBaseIdFromTitleId(context, titleId);
 
             if (resultCode != ResultCode.Success)
             {

src/Ryujinx.HLE/HOS/Services/Ns/IApplicationManagerInterface.cs

@@ -19,7 +19,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns
 
             ulong position = context.Request.ReceiveBuff[0].Position;
 
-            ApplicationControlProperty nacp = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+            ApplicationControlProperty nacp = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
             context.Memory.Write(position, SpanHelpers.AsByteSpan(ref nacp).ToArray());
 

src/Ryujinx.HLE/HOS/Services/Ns/IReadOnlyApplicationControlDataInterface.cs

@@ -18,7 +18,7 @@ namespace Ryujinx.HLE.HOS.Services.Ns
 
             ulong position = context.Request.ReceiveBuff[0].Position;
 
-            ApplicationControlProperty nacp = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
+            ApplicationControlProperty nacp = context.Device.Processes.GetProcess(context.ClientProcessId).ApplicationControlProperties;
 
             context.Memory.Write(position, SpanHelpers.AsByteSpan(ref nacp).ToArray());
 

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

@@ -48,21 +48,22 @@ namespace Ryujinx.HLE.HOS.Services.Pctl.ParentalControlServiceFactory
             {
                 if ((_permissionFlag & 0x40) == 0)
                 {
-                    ulong titleId = ApplicationLaunchProperty.GetByPid(context).TitleId;
+                    ulong titleId = ApplicationLaunchProperty.GetByPid(context, _pid).TitleId;
 
                     if (titleId != 0)
                     {
                         _titleId = titleId;
+                        var process = context.Device.Processes.GetProcess(_pid);
 
                         // TODO: Call nn::arp::GetApplicationControlProperty here when implemented, if it return ResultCode.Success we assign fields.
-                        _ratingAge = new int[context.Device.Processes.ActiveApplication.ApplicationControlProperties.RatingAge.Length];
+                        _ratingAge = new int[process.ApplicationControlProperties.RatingAge.Length];
 
                         for (int i = 0; i < _ratingAge.Length; i++)
                         {
-                            _ratingAge[i] = Convert.ToInt32(context.Device.Processes.ActiveApplication.ApplicationControlProperties.RatingAge[i]);
+                            _ratingAge[i] = Convert.ToInt32(process.ApplicationControlProperties.RatingAge[i]);
                         }
 
-                        _parentalControlFlag = context.Device.Processes.ActiveApplication.ApplicationControlProperties.ParentalControlFlag;
+                        _parentalControlFlag = process.ApplicationControlProperties.ParentalControlFlag;
                     }
                 }
 

src/Ryujinx.HLE/HOS/Services/Sdb/Pdm/QueryService/QueryPlayStatisticsManager.cs

@@ -2,6 +2,7 @@ using Ryujinx.Common;
 using Ryujinx.Cpu;
 using Ryujinx.HLE.HOS.Services.Account.Acc;
 using Ryujinx.HLE.HOS.Services.Sdb.Pdm.QueryService.Types;
+using Ryujinx.HLE.Loaders.Processes;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -31,7 +32,8 @@ namespace Ryujinx.HLE.HOS.Services.Sdb.Pdm.QueryService
                 }
             }
 
-            PlayLogQueryCapability queryCapability = (PlayLogQueryCapability)context.Device.Processes.ActiveApplication.ApplicationControlProperties.PlayLogQueryCapability;
+            ProcessResult process = context.Device.Processes.GetProcess(context.ClientProcessId);
+            PlayLogQueryCapability queryCapability = (PlayLogQueryCapability)process.ApplicationControlProperties.PlayLogQueryCapability;
 
             List<ulong> titleIds = [];
 
@@ -45,7 +47,7 @@ namespace Ryujinx.HLE.HOS.Services.Sdb.Pdm.QueryService
                 // Check if input title ids are in the whitelist.
                 foreach (ulong titleId in titleIds)
                 {
-                    if (!context.Device.Processes.ActiveApplication.ApplicationControlProperties.PlayLogQueryableApplicationId.AsReadOnlySpan().Contains(titleId))
+                    if (!process.ApplicationControlProperties.PlayLogQueryableApplicationId.AsReadOnlySpan().Contains(titleId))
                     {
                         return (ResultCode)Am.ResultCode.ObjectInvalid;
                     }

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

@@ -0,0 +1,34 @@
+namespace Ryujinx.HLE.Loaders.Processes
+{
+    public readonly struct ProcessIdentity
+    {
+        public ulong ProcessId { get; }
+        public ulong ProgramId { get; }
+        public ulong ApplicationId { get; }
+        public byte ProgramIndex { get; }
+        public string ProgramIdText { get; }
+        public string DisplayVersion { get; }
+        public ProcessKind Kind { get; }
+
+        public ProcessIdentity(
+            ulong processId,
+            ulong programId,
+            byte programIndex,
+            string displayVersion,
+            ProcessKind kind)
+        {
+            ProcessId = processId;
+            ProgramId = programId;
+            ProgramIndex = programIndex;
+            ApplicationId = programId & ~0xFul;
+            ProgramIdText = $"{programId:x16}";
+            DisplayVersion = displayVersion ?? string.Empty;
+            Kind = kind;
+        }
+
+        public override string ToString()
+        {
+            return $"{Kind} pid={ProcessId} program={ProgramIdText} application={ApplicationId:x16} index={ProgramIndex} version={DisplayVersion}";
+        }
+    }
+}

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

@@ -0,0 +1,12 @@
+namespace Ryujinx.HLE.Loaders.Processes
+{
+    public enum ProcessKind
+    {
+        Unknown,
+        Application,
+        SystemApplication,
+        SystemApplet,
+        LibraryApplet,
+        Homebrew,
+    }
+}

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

@@ -93,6 +93,23 @@ namespace Ryujinx.HLE.Loaders.Processes
             _processesByPid = new ConcurrentDictionary<ulong, ProcessResult>();
         }
 
+        public bool TryGetProcess(ulong pid, out ProcessResult process)
+        {
+            return _processesByPid.TryGetValue(pid, out process);
+        }
+
+        public ProcessResult GetProcess(ulong pid)
+        {
+            if (_processesByPid.TryGetValue(pid, out ProcessResult process))
+            {
+                return process;
+            }
+
+            Logger.Warning?.Print(LogClass.Loader, $"Process metadata for pid {pid} was not found. Falling back to active application metadata.");
+
+            return ActiveApplication;
+        }
+
         public bool LoadXci(string path, ulong applicationId)
         {
             FileStream stream = new(path, FileMode.Open, FileAccess.Read);

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

@@ -436,6 +436,7 @@ namespace Ryujinx.HLE.Loaders.Processes
                 allowCodeMemoryForJit,
                 processContextFactory.DiskCacheLoadState,
                 process.Pid,
+                programIndex,
                 meta.MainThreadPriority,
                 meta.MainThreadStackSize,
                 device.System.State.DesiredTitleLanguage);

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

@@ -10,7 +10,7 @@ namespace Ryujinx.HLE.Loaders.Processes
 {
     public class ProcessResult
     {
-        public static ProcessResult Failed => new(null, new BlitStruct<ApplicationControlProperty>(1), false, false, null, 0, 0, 0, TitleLanguage.AmericanEnglish);
+        public static ProcessResult Failed => new(null, new BlitStruct<ApplicationControlProperty>(1), false, false, null, 0, 0, 0, 0, TitleLanguage.AmericanEnglish);
 
         private readonly byte _mainThreadPriority;
         private readonly uint _mainThreadStackSize;
@@ -28,6 +28,7 @@ namespace Ryujinx.HLE.Loaders.Processes
         public readonly bool Is64Bit;
         public readonly bool DiskCacheEnabled;
         public readonly bool AllowCodeMemoryForJit;
+        public readonly ProcessIdentity Identity;
 
         public ProcessResult(
             MetaLoader metaLoader,
@@ -36,6 +37,7 @@ namespace Ryujinx.HLE.Loaders.Processes
             bool allowCodeMemoryForJit,
             IDiskCacheLoadState diskCacheLoadState,
             ulong pid,
+            byte programIndex,
             byte mainThreadPriority,
             uint mainThreadStackSize,
             TitleLanguage titleLanguage)
@@ -71,6 +73,7 @@ namespace Ryujinx.HLE.Loaders.Processes
                 ProgramId = programId;
                 ProgramIdText = $"{programId:x16}";
                 Is64Bit = metaLoader.IsProgram64Bit;
+                Identity = new ProcessIdentity(pid, programId, programIndex, DisplayVersion, GetProcessKind(programId));
             } 
             
             else
@@ -84,6 +87,31 @@ namespace Ryujinx.HLE.Loaders.Processes
             AllowCodeMemoryForJit = allowCodeMemoryForJit;
         }
 
+        private static ProcessKind GetProcessKind(ulong programId)
+        {
+            if (programId == 0)
+            {
+                return ProcessKind.Application;
+            }
+
+            if (programId is >= 0x0100000000001000 and <= 0x0100000000001FFF)
+            {
+                return ProcessKind.SystemApplet;
+            }
+
+            if (programId is >= 0x0100000000000800 and <= 0x0100000000000FFF)
+            {
+                return ProcessKind.LibraryApplet;
+            }
+
+            if (programId <= 0x0100000000007FFF)
+            {
+                return ProcessKind.SystemApplication;
+            }
+
+            return ProcessKind.Application;
+        }
+
         public bool Start(Switch device)
         {
             device.Configuration.ContentManager.LoadEntries(device);
@@ -109,6 +137,7 @@ namespace Ryujinx.HLE.Loaders.Processes
                 : device.System.ContentManager.GetCurrentFirmwareVersion()?.VersionString ?? "?";
 
             Logger.Info?.Print(LogClass.Loader, $"Application Loaded: {name} v{version} [{ProgramIdText}] [{(Is64Bit ? "64-bit" : "32-bit")}]");
+            Logger.Info?.Print(LogClass.Loader, $"Process identity: {Identity}");
 
             return true;
         }

src/Ryujinx/UI/Helpers/Win32NativeInterop.cs

@@ -63,6 +63,18 @@ namespace Ryujinx.Ava.UI.Helpers
             }
         }
 
+        [StructLayout(LayoutKind.Sequential)]
+        public struct NativeRect
+        {
+            public int Left;
+            public int Top;
+            public int Right;
+            public int Bottom;
+
+            public int Width => Right - Left;
+            public int Height => Bottom - Top;
+        }
+
         public static nint CreateEmptyCursor()
         {
             return CreateCursor(nint.Zero, 0, 0, 1, 1, [0xFF], [0x00]);
@@ -119,6 +131,10 @@ namespace Ryujinx.Ava.UI.Helpers
         [LibraryImport("user32.dll", SetLastError = true)]
         public static partial nint SetWindowLongPtrW(nint hWnd, int nIndex, nint value);
 
+        [LibraryImport("user32.dll", SetLastError = true)]
+        [return: MarshalAs(UnmanagedType.Bool)]
+        public static partial bool GetWindowRect(nint hWnd, out NativeRect lpRect);
+
         [LibraryImport("user32.dll", SetLastError = true)]
         [return: MarshalAs(UnmanagedType.Bool)]
         public static partial bool SetWindowPos(

src/Ryujinx/UI/ViewModels/MainWindowViewModel.cs

@@ -2060,6 +2060,12 @@ namespace Ryujinx.Ava.UI.ViewModels
         }
 
         private nint _savedWindowStyle;
+        private WindowState _savedWindowState;
+        private PixelPoint _savedWindowPosition;
+        private double _savedWindowWidth;
+        private double _savedWindowHeight;
+        private Win32NativeInterop.NativeRect _savedWindowRect;
+        private bool _savedWindowRectValid;
 
         [SupportedOSPlatform("windows")]
         private void MakeWindowFullscreen()
@@ -2067,19 +2073,36 @@ namespace Ryujinx.Ava.UI.ViewModels
             nint hwnd = Window.TryGetPlatformHandle()?.Handle ?? nint.Zero;
             if (hwnd == nint.Zero) return;
 
+            PixelPoint windowCenter = new(
+                Window.Position.X + (int)(Window.Bounds.Width / 2),
+                Window.Position.Y + (int)(Window.Bounds.Height / 2));
+
+            Avalonia.Platform.Screen? screen =
+                Window.Screens.ScreenFromVisual(Window) ??
+                Window.Screens.ScreenFromPoint(windowCenter) ??
+                Window.Screens.Primary;
+
+            if (screen == null)
+            {
+                return; // Can't determine screen size, don't attempt fullscreen
+            }
+
             // Save current style and placement
             _savedWindowStyle = Win32NativeInterop.GetWindowLongPtrW(hwnd, Win32NativeInterop.GWL_STYLE);
+            _savedWindowState = WindowState;
+            _savedWindowPosition = Window.Position;
+            _savedWindowWidth = Window.Width;
+            _savedWindowHeight = Window.Height;
+            _savedWindowRectValid = Win32NativeInterop.GetWindowRect(hwnd, out _savedWindowRect);
 
             // Remove window chrome: WS_OVERLAPPEDWINDOW -> WS_POPUP | WS_VISIBLE
             Win32NativeInterop.SetWindowLongPtrW(hwnd, Win32NativeInterop.GWL_STYLE,
                 unchecked((nint)(Win32NativeInterop.WS_POPUP | Win32NativeInterop.WS_VISIBLE)));
 
-            // TODO: why is this nullable
+            int w = screen.Bounds.Width;
-            Avalonia.Platform.Screen? screen = Window.Screens.ScreenFromVisual(Window);
+            int h = screen.Bounds.Height;
-            int w = screen?.Bounds.Width ?? 0;
-            int h = screen?.Bounds.Height ?? 0;
 
-            Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, 0, 0, w, h,
+            Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, screen.Bounds.X, screen.Bounds.Y, w, h,
                 Win32NativeInterop.SWP_NOZORDER | Win32NativeInterop.SWP_NOACTIVATE | Win32NativeInterop.SWP_FRAMECHANGED);
 
             WindowState = WindowState.FullScreen;
@@ -2094,10 +2117,34 @@ namespace Ryujinx.Ava.UI.ViewModels
             // Restore original window style
             Win32NativeInterop.SetWindowLongPtrW(hwnd, Win32NativeInterop.GWL_STYLE, _savedWindowStyle);
 
-            Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, 0, 0, 0, 0,
+            if (_savedWindowState is WindowState.Maximized)
-                Win32NativeInterop.SWP_NOZORDER | Win32NativeInterop.SWP_NOACTIVATE |
+            {
-                Win32NativeInterop.SWP_FRAMECHANGED | Win32NativeInterop.SWP_NOMOVE | Win32NativeInterop.SWP_NOSIZE);
+                Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, 0, 0, 0, 0,
+                    Win32NativeInterop.SWP_NOZORDER | Win32NativeInterop.SWP_NOACTIVATE |
+                    Win32NativeInterop.SWP_FRAMECHANGED | Win32NativeInterop.SWP_NOMOVE | Win32NativeInterop.SWP_NOSIZE);
+            }
+            else if (_savedWindowRectValid)
+            {
+                Dispatcher.UIThread.Post(() => RestoreSavedWindowRect(hwnd), DispatcherPriority.Background);
+            }
+            else
+            {
+                Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, 0, 0, 0, 0,
+                    Win32NativeInterop.SWP_NOZORDER | Win32NativeInterop.SWP_NOACTIVATE |
+                    Win32NativeInterop.SWP_FRAMECHANGED | Win32NativeInterop.SWP_NOMOVE | Win32NativeInterop.SWP_NOSIZE);
+            }
+        }
 
+        [SupportedOSPlatform("windows")]
+        private void RestoreSavedWindowRect(nint hwnd)
+        {
+            Window.Position = _savedWindowPosition;
+            Window.Width = _savedWindowWidth;
+            Window.Height = _savedWindowHeight;
+
+            Win32NativeInterop.SetWindowPos(hwnd, nint.Zero, _savedWindowRect.Left, _savedWindowRect.Top,
+                _savedWindowRect.Width, _savedWindowRect.Height,
+                Win32NativeInterop.SWP_NOZORDER | Win32NativeInterop.SWP_NOACTIVATE | Win32NativeInterop.SWP_FRAMECHANGED);
         }
 
         public static void SaveConfig()

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

@@ -48,6 +48,8 @@ namespace Ryujinx.Ava.UI.Windows
 
         private bool _isLoading;
         private bool _applicationsLoadedOnce;
+        private double _windowStartupWidthDelta;
+        private double _windowStartupHeightDelta;
 
         private UserChannelPersistence _userChannelPersistence;
         private static bool _deferLoad;
@@ -477,8 +479,8 @@ namespace Ryujinx.Ava.UI.Windows
             {
                 // Since scaling is being applied to the loaded settings from disk (see SetWindowSizePosition() above), scaling should be removed from width/height before saving out to disk
                 // as well - otherwise anyone not using a 1.0 scale factor their window will increase in size with every subsequent launch of the program when scaling is applied (Nov. 14, 2024)
-                ConfigurationState.Instance.UI.WindowStartup.WindowSizeHeight.Value = (int)(Height / Program.WindowScaleFactor);
+                ConfigurationState.Instance.UI.WindowStartup.WindowSizeHeight.Value = (int)((Height - _windowStartupHeightDelta) / Program.WindowScaleFactor);
-                ConfigurationState.Instance.UI.WindowStartup.WindowSizeWidth.Value = (int)(Width / Program.WindowScaleFactor);
+                ConfigurationState.Instance.UI.WindowStartup.WindowSizeWidth.Value = (int)((Width - _windowStartupWidthDelta) / Program.WindowScaleFactor);
 
                 ConfigurationState.Instance.UI.WindowStartup.WindowPositionX.Value = Position.X;
                 ConfigurationState.Instance.UI.WindowStartup.WindowPositionY.Value = Position.Y;
@@ -493,6 +495,9 @@ namespace Ryujinx.Ava.UI.Windows
 
             Initialize();
 
+            _windowStartupWidthDelta = Math.Max(0, Width - ViewModel.WindowWidth);
+            _windowStartupHeightDelta = Math.Max(0, Height - ViewModel.WindowHeight);
+
             PlatformSettings!.ColorValuesChanged += OnPlatformColorValuesChanged;
 
             ViewModel.Initialize(