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

@@ -32,6 +32,7 @@ enum class BooleanSetting(override val key: String) : AbstractBooleanSetting {
     RENDERER_DESCRIPTOR_INDEXING("descriptor_indexing"),
     RENDERER_SAMPLE_SHADING("sample_shading"),
     PICTURE_IN_PICTURE("picture_in_picture"),
+    FRAME_SKIPPING("frame_skipping"),
     USE_CUSTOM_RTC("custom_rtc_enabled"),
     BLACK_BACKGROUNDS("black_backgrounds"),
     JOYSTICK_REL_CENTER("joystick_rel_center"),
@@ -51,7 +52,6 @@ enum class BooleanSetting(override val key: String) : AbstractBooleanSetting {
 
     ENABLE_RAII("enable_raii"),
     FRAME_INTERPOLATION("frame_interpolation"),
-//    FRAME_SKIPPING("frame_skipping"),
 
     PERF_OVERLAY_BACKGROUND("perf_overlay_background"),
     SHOW_PERFORMANCE_OVERLAY("show_performance_overlay"),

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

@@ -242,15 +242,13 @@ abstract class SettingsItem(
                     descriptionId = R.string.frame_interpolation_description
                 )
             )
-
-//            put(
-//                SwitchSetting(
-//                    BooleanSetting.FRAME_SKIPPING,
-//                    titleId = R.string.frame_skipping,
-//                    descriptionId = R.string.frame_skipping_description
-//                )
-//            )
-
+            put(
+                SwitchSetting(
+                    BooleanSetting.FRAME_SKIPPING,
+                    titleId = R.string.frame_skipping,
+                    descriptionId = R.string.frame_skipping_description,
+                )
+            )
             put(
                 SwitchSetting(
                     dockedModeSetting,

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

@@ -450,6 +450,7 @@ class SettingsFragmentPresenter(
             add(BooleanSetting.RENDERER_EARLY_RELEASE_FENCES.key)
             add(BooleanSetting.BUFFER_REORDER_DISABLE.key)
             add(BooleanSetting.FRAME_INTERPOLATION.key)
+            add(BooleanSetting.FRAME_SKIPPING.key)
             add(BooleanSetting.RENDERER_FAST_GPU.key)
             add(IntSetting.FAST_GPU_TIME.key)
             add(IntSetting.RENDERER_SHADER_BACKEND.key)

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

@@ -482,8 +482,8 @@
     <string name="display">Display</string>
     <string name="processing">Post-Processing</string>
 
-    <string name="frame_skipping">WIP: Frameskip</string>
-    <string name="frame_skipping_description">Toggle frame skipping to improve performance by reducing the number of rendered frames. This feature is still being worked on and will be enabled in future releases.</string>
+    <string name="frame_skipping">Frame Skipping</string>
+    <string name="frame_skipping_description">Toggle frame skipping to improve performance by reducing the number of rendered frames.</string>
     <string name="renderer_accuracy">Accuracy level</string>
     <string name="renderer_resolution">Resolution (Handheld/Docked)</string>
     <string name="renderer_vsync">VSync mode</string>

src/common/settings.h

@@ -325,9 +325,8 @@ struct Values {
 #ifdef __ANDROID__
     SwitchableSetting<bool> frame_interpolation{linkage, true, "frame_interpolation", Category::Renderer,
                                                 Specialization::RuntimeList};
-    SwitchableSetting<bool> frame_skipping{linkage, false, "frame_skipping", Category::Renderer,
-                                           Specialization::RuntimeList};
 #endif
+    SwitchableSetting<bool> frame_skipping{linkage, false, "frame_skipping", Category::Renderer};
     SwitchableSetting<bool> use_disk_shader_cache{linkage, true, "use_disk_shader_cache",
                                                   Category::Renderer};
     SwitchableSetting<SpirvOptimizeMode, true> optimize_spirv_output{linkage,

src/video_core/gpu.cpp

@@ -223,17 +223,23 @@ struct GPU::Impl {
         system.GetPerfStats().EndGameFrame();
     }
 
+    void ResetFrameCounter() {
+        frame_count.store(0, std::memory_order_relaxed);
+    }
+
     /// Performs any additional setup necessary in order to begin GPU emulation.
     /// This can be used to launch any necessary threads and register any necessary
     /// core timing events.
     void Start() {
         Settings::UpdateGPUAccuracy();
+        ResetFrameCounter();
         gpu_thread.StartThread(*renderer, renderer->Context(), *scheduler);
     }
 
     void NotifyShutdown() {
         std::unique_lock lk{sync_mutex};
         shutting_down.store(true, std::memory_order::relaxed);
+        ResetFrameCounter();
         sync_cv.notify_all();
     }
 
@@ -291,10 +297,16 @@ struct GPU::Impl {
 
     void RequestComposite(std::vector<Tegra::FramebufferConfig>&& layers,
                           std::vector<Service::Nvidia::NvFence>&& fences) {
+        // Increment frame counter
+        const u64 current_frame = frame_count.fetch_add(1, std::memory_order_relaxed) + 1;
+        const u32 frame_skip_value = Settings::values.frame_skipping.GetValue();
+        const bool skip_frame = frame_skip_value > 0 &&
+                                (current_frame % (static_cast<u64>(frame_skip_value) + 1) != 0);
+
         size_t num_fences{fences.size()};
         size_t current_request_counter{};
         {
-            std::unique_lock<std::mutex> lk(request_swap_mutex);
+            std::unique_lock<std::mutex> lk{request_swap_mutex};
             if (free_swap_counters.empty()) {
                 current_request_counter = request_swap_counters.size();
                 request_swap_counters.emplace_back(num_fences);
@@ -305,23 +317,33 @@ struct GPU::Impl {
             }
         }
         const auto wait_fence =
-            RequestSyncOperation([this, current_request_counter, &layers, &fences, num_fences] {
+            RequestSyncOperation([this, current_request_counter, &layers, &fences, num_fences, skip_frame] {
                 auto& syncpoint_manager = host1x.GetSyncpointManager();
                 if (num_fences == 0) {
-                    renderer->Composite(layers);
-                }
-                const auto executer = [this, current_request_counter, layers_copy = layers]() {
-                    {
-                        std::unique_lock<std::mutex> lk(request_swap_mutex);
-                        if (--request_swap_counters[current_request_counter] != 0) {
-                            return;
-                        }
-                        free_swap_counters.push_back(current_request_counter);
+                    if (!skip_frame) {
+                        renderer->Composite(layers);
+                    } else {
+                        system.GetPerfStats().EndGameFrame();
+                    }
+                } else {
+                    const auto executer = [this, current_request_counter, layers_copy = std::move(layers), skip_frame]() {
+                        {
+                            std::unique_lock<std::mutex> lk{request_swap_mutex};
+                            if (--request_swap_counters[current_request_counter] != 0) {
+                                return;
+                            }
+                            free_swap_counters.push_back(current_request_counter);
+                        }
+                        // Handle frame skipping in executer
+                        if (!skip_frame) {
+                            renderer->Composite(layers_copy);
+                        } else {
+                            system.GetPerfStats().EndGameFrame();
+                        }
+                    };
+                    for (size_t i = 0; i < num_fences; i++) {
+                        syncpoint_manager.RegisterGuestAction(fences[i].id, fences[i].value, executer);
                     }
-                    renderer->Composite(layers_copy);
-                };
-                for (size_t i = 0; i < num_fences; i++) {
-                    syncpoint_manager.RegisterGuestAction(fences[i].id, fences[i].value, executer);
                 }
             });
         gpu_thread.TickGPU();
@@ -353,6 +375,8 @@ struct GPU::Impl {
     /// When true, we are about to shut down emulation session, so terminate outstanding tasks
     std::atomic_bool shutting_down{};
 
+    std::atomic<u64> frame_count{0};
+
     std::array<std::atomic<u32>, Service::Nvidia::MaxSyncPoints> syncpoints{};
 
     std::array<std::list<u32>, Service::Nvidia::MaxSyncPoints> syncpt_interrupts;

src/video_core/gpu.h

@@ -220,6 +220,9 @@ public:
 
     std::vector<u8> GetAppletCaptureBuffer();
 
+    // Reset frame counter
+    void ResetFrameCounter();
+
     /// Performs any additional setup necessary in order to begin GPU emulation.
     /// This can be used to launch any necessary threads and register any necessary
     /// core timing events.

src/yuzu/configuration/shared_translation.cpp

@@ -269,6 +269,18 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QWidget* parent)
     INSERT(Settings, bg_blue, QString(), QString());
 
     // Renderer (Advanced Graphics)
+    INSERT(Settings,
+           enable_raii,
+           tr("RAII"),
+           tr("A method of automatic resource management in Vulkan "
+              "that ensures proper release of resources "
+              "when they are no longer needed, but may cause crashes in bundled games."));
+    INSERT(Settings,
+           frame_skipping,
+           tr("Frame Skipping"),
+           tr("Skips rendering every other frame while still presenting "
+              "the frame as rendered.\nThis cuts the effective FPS in half, but can make "
+              "games run stable at the game's target FPS on weaker hardware."));
     INSERT(Settings,
            async_presentation,
            tr("Enable asynchronous presentation (Vulkan only)"),
@@ -335,12 +347,6 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QWidget* parent)
            tr("Improves rendering of transparency effects in specific games."));
 
     // Renderer (Extensions)
-    INSERT(Settings,
-           enable_raii,
-           tr("RAII"),
-           tr("A method of automatic resource management in Vulkan "
-              "that ensures proper release of resources "
-              "when they are no longer needed, but may cause crashes in bundled games."));
     INSERT(Settings,
            dyna_state,
            tr("Extended Dynamic State"),