feature: Turbo Mode

Adds an elapsed tick multiplier feature which speeds up games which are built upon delta time.

More information: https://web.archive.org/web/20240713135029/https://github.com/Ryujinx/Ryujinx/pull/6456

Co-authored-by: KeatonTheBot <keaton@ryujinx.app>

src/Ryujinx.HLE/HLEConfiguration.cs

@@ -103,6 +103,11 @@ namespace Ryujinx.HLE
         /// Control if the Profiled Translation Cache (PTC) should be used.
         /// </summary>
         internal readonly bool EnablePtc;
+        
+        /// <summary>
+        /// Control the arbitrary scalar applied to emulated CPU tick timing.
+        /// </summary>
+        public long TickScalar { get; set; }
 
         /// <summary>
         /// Control if the guest application should be told that there is a Internet connection available.
@@ -219,6 +224,7 @@ namespace Ryujinx.HLE
                                 VSyncMode vSyncMode,
                                 bool enableDockedMode,
                                 bool enablePtc,
+                                long tickScalar,
                                 bool enableInternetAccess,
                                 IntegrityCheckLevel fsIntegrityCheckLevel,
                                 int fsGlobalAccessLogMode,
@@ -254,6 +260,7 @@ namespace Ryujinx.HLE
             CustomVSyncInterval = customVSyncInterval;
             EnableDockedMode = enableDockedMode;
             EnablePtc = enablePtc;
+            TickScalar = tickScalar;
             EnableInternetAccess = enableInternetAccess;
             FsIntegrityCheckLevel = fsIntegrityCheckLevel;
             FsGlobalAccessLogMode = fsGlobalAccessLogMode;

src/Ryujinx.HLE/HOS/Services/IpcService.cs

@@ -127,10 +127,7 @@ namespace Ryujinx.HLE.HOS.Services
                 }
                 else
                 {
-                    string serviceName;
-
-
-                    serviceName = (service is not DummyService dummyService) ? service.GetType().FullName : dummyService.ServiceName;
+                    string serviceName = (service is not DummyService dummyService) ? service.GetType().FullName : dummyService.ServiceName;
 
                     Logger.Warning?.Print(LogClass.KernelIpc, $"Missing service {serviceName}: {commandId} ignored");
                 }

src/Ryujinx.HLE/HOS/Services/SurfaceFlinger/SurfaceFlinger.cs

@@ -2,6 +2,7 @@ using Ryujinx.Common;
 using Ryujinx.Common.Configuration;
 using Ryujinx.Common.Logging;
 using Ryujinx.Common.PreciseSleep;
+using Ryujinx.Cpu;
 using Ryujinx.Graphics.GAL;
 using Ryujinx.Graphics.Gpu;
 using Ryujinx.HLE.HOS.Services.Nv.NvDrvServices.NvMap;
@@ -90,7 +91,7 @@ namespace Ryujinx.HLE.HOS.Services.SurfaceFlinger
             }
             else
             {
-                _ticksPerFrame = Stopwatch.Frequency / _device.TargetVSyncInterval;
+                _ticksPerFrame = ((Stopwatch.Frequency / _device.TargetVSyncInterval) * 100) / _device.TickScalar;
                 _targetVSyncInterval = _device.TargetVSyncInterval;
             }
         }

src/Ryujinx.HLE/PerformanceStatistics.cs

@@ -6,6 +6,8 @@ namespace Ryujinx.HLE
 {
     public class PerformanceStatistics
     {
+        private readonly Switch _device;
+        
         private const int FrameTypeGame = 0;
         private const int PercentTypeFifo = 0;
 
@@ -28,8 +30,10 @@ namespace Ryujinx.HLE
 
         private readonly System.Timers.Timer _resetTimer;
 
-        public PerformanceStatistics()
+        public PerformanceStatistics(Switch device)
         {
+            _device = device;
+            
             _frameRate = new double[1];
             _accumulatedFrameTime = new double[1];
             _previousFrameTime = new double[1];

src/Ryujinx.HLE/Switch.cs

@@ -1,6 +1,7 @@
 using Ryujinx.Audio.Backends.CompatLayer;
 using Ryujinx.Audio.Integration;
 using Ryujinx.Common.Configuration;
+using Ryujinx.Cpu;
 using Ryujinx.Graphics.Gpu;
 using Ryujinx.HLE.FileSystem;
 using Ryujinx.HLE.HOS;
@@ -17,12 +18,23 @@ namespace Ryujinx.HLE
 {
     public class Switch : IDisposable
     {
+        public static Switch Shared { get; private set; }
+
         public HLEConfiguration Configuration { get; }
         public IHardwareDeviceDriver AudioDeviceDriver { get; }
         public MemoryBlock Memory { get; }
         public GpuContext Gpu { get; }
         public VirtualFileSystem FileSystem { get; }
         public HOS.Horizon System { get; }
+
+        public bool TurboMode = false;
+
+        public long TickScalar
+        {
+            get => System?.TickSource?.TickScalar ?? ITickSource.RealityTickScalar;
+            set => System.TickSource.TickScalar = value;
+        }
+        
         public ProcessLoader Processes { get; }
         public PerformanceStatistics Statistics { get; }
         public Hid Hid { get; }
@@ -30,12 +42,11 @@ namespace Ryujinx.HLE
         public IHostUIHandler UIHandler { get; }
         public Debugger.Debugger Debugger { get; }
 
-        public int CpuCoresCount = 4; //Switch 1 has 4 cores
+        public int CpuCoresCount = 4; // Switch has a quad-core Tegra X1 SoC
 
         public VSyncMode VSyncMode { get; set; } = VSyncMode.Switch;
         public bool CustomVSyncIntervalEnabled { get; set; } = false;
         public int CustomVSyncInterval { get; set; }
-
         public long TargetVSyncInterval { get; set; } = 60;
 
         public bool IsFrameAvailable => Gpu.Window.IsFrameAvailable;
@@ -60,7 +71,7 @@ namespace Ryujinx.HLE
             Gpu               = new GpuContext(Configuration.GpuRenderer);
             Debugger          = Configuration.EnableGdbStub ? new Debugger.Debugger(this, Configuration.GdbStubPort) : null;
             System            = new HOS.Horizon(this);
-            Statistics        = new PerformanceStatistics();
+            Statistics        = new PerformanceStatistics(this);
             Hid               = new Hid(this, System.HidStorage);
             Processes         = new ProcessLoader(this);
             TamperMachine     = new TamperMachine();
@@ -71,6 +82,7 @@ namespace Ryujinx.HLE
 
             VSyncMode                               = Configuration.VSyncMode;
             CustomVSyncInterval                     = Configuration.CustomVSyncInterval;
+            TickScalar                              = TurboMode ? Configuration.TickScalar : ITickSource.RealityTickScalar;
             System.State.DockedMode                 = Configuration.EnableDockedMode;
             System.PerformanceState.PerformanceMode = System.State.DockedMode ? PerformanceMode.Boost : PerformanceMode.Default;
             System.EnablePtc                        = Configuration.EnablePtc;
@@ -78,6 +90,8 @@ namespace Ryujinx.HLE
             System.GlobalAccessLogMode              = Configuration.FsGlobalAccessLogMode;
             UpdateVSyncInterval();
 #pragma warning restore IDE0055
+            
+            Shared = this;
         }
 
         public bool LoadCart(string exeFsDir, string romFsFile = null)
@@ -175,6 +189,12 @@ namespace Ryujinx.HLE
             }
         }
 
+        public void ToggleTurbo()
+        {
+            TurboMode = !TurboMode;
+            TickScalar = TurboMode ? Configuration.TickScalar : ITickSource.RealityTickScalar;
+        }
+
         public void SetVolume(float volume)
         {
             AudioDeviceDriver.Volume = Math.Clamp(volume, 0f, 1f);
@@ -215,6 +235,8 @@ namespace Ryujinx.HLE
                 FileSystem.Dispose();
                 Memory.Dispose();
                 Debugger?.Dispose();
+
+                Shared = null;
             }
         }
     }