[core, frontend] Add Custom CPU Ticks option (#217)

Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Co-authored-by: crueter <swurl@swurl.xyz>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/217

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/BooleanSetting.kt

@@ -16,6 +16,7 @@ enum class BooleanSetting(override val key: String) : AbstractBooleanSetting {
     CORE_SYNC_CORE_SPEED("sync_core_speed"),
     RENDERER_USE_SPEED_LIMIT("use_speed_limit"),
     USE_FAST_CPU_TIME("use_fast_cpu_time"),
+    USE_CUSTOM_CPU_TICKS("use_custom_cpu_ticks"),
     USE_DOCKED_MODE("use_docked_mode"),
     USE_AUTO_STUB("use_auto_stub"),
     RENDERER_USE_DISK_SHADER_CACHE("use_disk_shader_cache"),

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/IntSetting.kt

@@ -37,6 +37,7 @@ enum class IntSetting(override val key: String) : AbstractIntSetting {
     MEMORY_LAYOUT("memory_layout_mode"),
     FSR_SHARPENING_SLIDER("fsr_sharpening_slider"),
     FAST_CPU_TIME("fast_cpu_time"),
+    CPU_TICKS("cpu_ticks"),
     FAST_GPU_TIME("fast_gpu_time"),
 
     CABINET_APPLET("cabinet_applet_mode"),

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -580,6 +580,22 @@ abstract class SettingsItem(
                     valuesId = R.array.clockValues
                 )
             )
+            put(
+                SwitchSetting(
+                    BooleanSetting.USE_CUSTOM_CPU_TICKS,
+                    titleId = R.string.custom_cpu_ticks,
+                    descriptionId = R.string.custom_cpu_ticks_description
+                )
+            )
+            put(
+                SliderSetting(
+                    IntSetting.CPU_TICKS,
+                    titleId = R.string.cpu_ticks,
+                    descriptionId = 0,
+                    min = 77,
+                    max = 65535
+                )
+            )
             put(
                 SwitchSetting(
                     BooleanSetting.RENDERER_REACTIVE_FLUSHING,

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -448,6 +448,8 @@ class SettingsFragmentPresenter(
             add(HeaderSetting(R.string.veil_misc))
             add(BooleanSetting.USE_FAST_CPU_TIME.key)
             add(IntSetting.FAST_CPU_TIME.key)
+            add(BooleanSetting.USE_CUSTOM_CPU_TICKS.key)
+            add(IntSetting.CPU_TICKS.key)
             add(BooleanSetting.USE_LRU_CACHE.key)
             add(BooleanSetting.CORE_SYNC_CORE_SPEED.key)
             add(IntSetting.MEMORY_LAYOUT.key)

src/android/app/src/main/res/values/strings.xml

@@ -90,6 +90,9 @@
     <string name="use_lru_cache_description">Enable or disable the Least Recently Used (LRU) cache, increasing performance by saving CPU process usage. Some games have issue with it, notably TotK 1.2.1, so disable if the game doesn\'t boot or crashes randomly.</string>
     <string name="use_fast_cpu_time">Fast CPU Time</string>
     <string name="use_fast_cpu_time_description">Forces the emulated CPU to run at a higher clock, reducing certain FPS limiters. This option is hacky and may cause issues, and weaker CPUs may see reduced performance.</string>
+    <string name="custom_cpu_ticks">Custom CPU Ticks</string>
+    <string name="custom_cpu_ticks_description">Set a custom value of CPU ticks. Higher values can increase performance, but may also cause the game to freeze. A range of 77–21000 is recommended.</string>
+    <string name="cpu_ticks">Ticks</string>
     <string name="fast_cpu_time">CPU Clock</string>
     <string name="fast_cpu_time_description">Use Boost (1700MHz) to run at the Switch\'s highest native clock, or Fast (2000MHz) to run at 2x clock.</string>
     <string name="memory_layout">Memory Layout</string>

src/common/settings.h

@@ -259,6 +259,25 @@ struct Values {
                                               true,
                                               &use_fast_cpu_time};
 
+    SwitchableSetting<bool> use_custom_cpu_ticks{linkage,
+                                                 false,
+                                                 "use_custom_cpu_ticks",
+                                                 Category::Cpu,
+                                                 Specialization::Paired,
+                                                 true,
+                                                 true};
+
+    SwitchableSetting<u32, true> cpu_ticks{linkage,
+                                           16000,
+                                           77,
+                                           65535,
+                                           "cpu_ticks",
+                                           Category::Cpu,
+                                           Specialization::Countable,
+                                           true,
+                                           true,
+                                           &use_custom_cpu_ticks};
+
     SwitchableSetting<bool> cpu_debug_mode{linkage, false, "cpu_debug_mode", Category::CpuDebug};
 
     Setting<bool> cpuopt_page_tables{linkage, true, "cpuopt_page_tables", Category::CpuDebug};

src/core/core_timing.cpp

@@ -172,7 +172,9 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type,
 }
 
 void CoreTiming::AddTicks(u64 ticks_to_add) {
-    cpu_ticks += ticks_to_add;
+    cpu_ticks = Settings::values.use_custom_cpu_ticks.GetValue() 
+            ? Settings::values.cpu_ticks.GetValue() 
+            : cpu_ticks + ticks_to_add;
     downcount -= static_cast<s64>(cpu_ticks);
 }
 

src/yuzu/configuration/configure_cpu.cpp

@@ -73,8 +73,9 @@ void ConfigureCpu::Setup(const ConfigurationShared::Builder& builder) {
         } else if (setting->Id() == Settings::values.cpu_backend.Id()) {
             backend_layout->addWidget(widget);
             backend_combobox = widget->combobox;
-        } else if (setting->Id() == Settings::values.fast_cpu_time.Id()
-                   || setting->Id() == Settings::values.use_fast_cpu_time.Id()) {
+        } else if (setting->Id() == Settings::values.fast_cpu_time.Id()) {
+            ui->general_layout->addWidget(widget);
+        } else if (setting->Id() == Settings::values.cpu_ticks.Id()) {
             ui->general_layout->addWidget(widget);
         } else {
             // Presently, all other settings here are unsafe checkboxes

src/yuzu/configuration/shared_translation.cpp

@@ -106,6 +106,13 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QWidget* parent)
            tr("Overclocks the emulated CPU to remove some FPS limiters. Weaker CPUs may see reduced performance, "
               "and certain games may behave improperly.\nUse Boost (1700MHz) to run at the Switch's highest native "
               "clock, or Fast (2000MHz) to run at 2x clock."));
+
+    INSERT(Settings, use_custom_cpu_ticks, QString(), QString());
+    INSERT(Settings,
+           cpu_ticks,
+           tr("Custom CPU Ticks"),
+           tr("Set a custom value of CPU ticks. Higher values can increase performance, but may "
+              "also cause the game to freeze. A range of 77–21000 is recommended."));
     INSERT(Settings, cpu_backend, tr("Backend:"), QString());
 
     // Cpu Debug