early-access version 3841

README.md

@@ -1,7 +1,7 @@
 yuzu emulator early access
 =============
 
-This is the source code for early-access 3840.
+This is the source code for early-access 3841.
 
 ## Legal Notice
 

externals/ffmpeg/CMakeLists.txt

@@ -164,7 +164,7 @@ if (NOT WIN32 AND NOT ANDROID)
                 --enable-decoder=h264
                 --enable-decoder=vp8
                 --enable-decoder=vp9
-                --enable-filter=yadif
+                --enable-filter=yadif,scale
                 --cc="${FFmpeg_CC}"
                 --cxx="${FFmpeg_CXX}"
                 ${FFmpeg_HWACCEL_FLAGS}
@@ -254,7 +254,7 @@ elseif(ANDROID)
     set(FFmpeg_INCLUDE_DIR "${FFmpeg_INCLUDE_DIR}" PARENT_SCOPE)
 elseif(WIN32)
     # Use yuzu FFmpeg binaries
-    set(FFmpeg_EXT_NAME "ffmpeg-5.1.3")
+    set(FFmpeg_EXT_NAME "ffmpeg-6.0")
     set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
     download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
     set(FFmpeg_FOUND YES)

src/common/settings.h

@@ -349,6 +349,7 @@ struct Values {
                                           Category::RendererDebug};
     Setting<bool> disable_shader_loop_safety_checks{
         linkage, false, "disable_shader_loop_safety_checks", Category::RendererDebug};
+    bool graphics_AMD_workaround{}; // TODO: remove me once amd supports VK_EXT_depth_bias_control
 
     // System
     SwitchableSetting<Language, true> language_index{linkage,

src/core/core.cpp

@@ -376,6 +376,10 @@ struct System::Impl {
             room_member->SendGameInfo(game_info);
         }
 
+        // Workarounds:
+        // Activate this in Super Smash Brothers, it only affects AMD cards using AMDVLK
+        Settings::values.graphics_AMD_workaround = program_id == 0x1006A800016E000ULL;
+
         status = SystemResultStatus::Success;
         return status;
     }
@@ -435,6 +439,9 @@ struct System::Impl {
             room_member->SendGameInfo(game_info);
         }
 
+        // Workarounds
+        Settings::values.graphics_AMD_workaround = false;
+
         LOG_DEBUG(Core, "Shutdown OK");
     }
 

src/video_core/host1x/codecs/codec.cpp

@@ -319,6 +319,7 @@ void Codec::Decode() {
         LOG_WARNING(Service_NVDRV, "Zero width or height in frame");
         return;
     }
+    bool is_interlaced = initial_frame->interlaced_frame != 0;
     if (av_codec_ctx->hw_device_ctx) {
         final_frame = AVFramePtr{av_frame_alloc(), AVFrameDeleter};
         ASSERT_MSG(final_frame, "av_frame_alloc final_frame failed");
@@ -334,7 +335,7 @@ void Codec::Decode() {
         UNIMPLEMENTED_MSG("Unexpected video format: {}", final_frame->format);
         return;
     }
-    if (!final_frame->interlaced_frame) {
+    if (!is_interlaced) {
         av_frames.push(std::move(final_frame));
     } else {
         if (!filters_initialized) {

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -1014,15 +1014,37 @@ void RasterizerVulkan::UpdateDepthBias(Tegra::Engines::Maxwell3D::Regs& regs) {
                         regs.zeta.format == Tegra::DepthFormat::X8Z24_UNORM ||
                         regs.zeta.format == Tegra::DepthFormat::S8Z24_UNORM ||
                         regs.zeta.format == Tegra::DepthFormat::V8Z24_UNORM;
-    if (is_d24 && !device.SupportsD24DepthBuffer()) {
+    bool force_unorm = ([&] {
+        if (!is_d24 || device.SupportsD24DepthBuffer()) {
+            return false;
+        }
+        if (device.IsExtDepthBiasControlSupported()) {
+            return true;
+        }
+        if (!Settings::values.graphics_AMD_workaround) {
+            return false;
+        }
         // the base formulas can be obtained from here:
         //   https://docs.microsoft.com/en-us/windows/win32/direct3d11/d3d10-graphics-programming-guide-output-merger-stage-depth-bias
         const double rescale_factor =
             static_cast<double>(1ULL << (32 - 24)) / (static_cast<double>(0x1.ep+127));
         units = static_cast<float>(static_cast<double>(units) * rescale_factor);
-    }
+        return false;
+    })();
     scheduler.Record([constant = units, clamp = regs.depth_bias_clamp,
-                      factor = regs.slope_scale_depth_bias](vk::CommandBuffer cmdbuf) {
+                      factor = regs.slope_scale_depth_bias, force_unorm,
+                      precise = device.HasExactDepthBiasControl()](vk::CommandBuffer cmdbuf) {
+        if (force_unorm) {
+            VkDepthBiasRepresentationInfoEXT info{
+                .sType = VK_STRUCTURE_TYPE_DEPTH_BIAS_REPRESENTATION_INFO_EXT,
+                .pNext = nullptr,
+                .depthBiasRepresentation =
+                    VK_DEPTH_BIAS_REPRESENTATION_LEAST_REPRESENTABLE_VALUE_FORCE_UNORM_EXT,
+                .depthBiasExact = precise ? VK_TRUE : VK_FALSE,
+            };
+            cmdbuf.SetDepthBias(constant, clamp, factor, &info);
+            return;
+        }
         cmdbuf.SetDepthBias(constant, clamp, factor);
     });
 }

src/video_core/vulkan_common/vulkan_device.cpp

@@ -1051,6 +1051,13 @@ void Device::RemoveUnsuitableExtensions() {
     RemoveExtensionFeatureIfUnsuitable(extensions.custom_border_color, features.custom_border_color,
                                        VK_EXT_CUSTOM_BORDER_COLOR_EXTENSION_NAME);
 
+    // VK_EXT_depth_bias_control
+    extensions.depth_bias_control =
+        features.depth_bias_control.depthBiasControl &&
+        features.depth_bias_control.leastRepresentableValueForceUnormRepresentation;
+    RemoveExtensionFeatureIfUnsuitable(extensions.depth_bias_control, features.depth_bias_control,
+                                       VK_EXT_DEPTH_BIAS_CONTROL_EXTENSION_NAME);
+
     // VK_EXT_depth_clip_control
     extensions.depth_clip_control = features.depth_clip_control.depthClipControl;
     RemoveExtensionFeatureIfUnsuitable(extensions.depth_clip_control, features.depth_clip_control,

src/video_core/vulkan_common/vulkan_device.h

@@ -41,6 +41,7 @@ VK_DEFINE_HANDLE(VmaAllocator)
 // Define all features which may be used by the implementation and require an extension here.
 #define FOR_EACH_VK_FEATURE_EXT(FEATURE)                                                           \
     FEATURE(EXT, CustomBorderColor, CUSTOM_BORDER_COLOR, custom_border_color)                      \
+    FEATURE(EXT, DepthBiasControl, DEPTH_BIAS_CONTROL, depth_bias_control)                         \
     FEATURE(EXT, DepthClipControl, DEPTH_CLIP_CONTROL, depth_clip_control)                         \
     FEATURE(EXT, ExtendedDynamicState, EXTENDED_DYNAMIC_STATE, extended_dynamic_state)             \
     FEATURE(EXT, ExtendedDynamicState2, EXTENDED_DYNAMIC_STATE_2, extended_dynamic_state2)         \
@@ -95,6 +96,7 @@ VK_DEFINE_HANDLE(VmaAllocator)
 #define FOR_EACH_VK_RECOMMENDED_EXTENSION(EXTENSION_NAME)                                          \
     EXTENSION_NAME(VK_EXT_CONDITIONAL_RENDERING_EXTENSION_NAME)                                    \
     EXTENSION_NAME(VK_EXT_CONSERVATIVE_RASTERIZATION_EXTENSION_NAME)                               \
+    EXTENSION_NAME(VK_EXT_DEPTH_BIAS_CONTROL_EXTENSION_NAME)                                       \
     EXTENSION_NAME(VK_EXT_DEPTH_RANGE_UNRESTRICTED_EXTENSION_NAME)                                 \
     EXTENSION_NAME(VK_EXT_EXTENDED_DYNAMIC_STATE_EXTENSION_NAME)                                   \
     EXTENSION_NAME(VK_EXT_EXTENDED_DYNAMIC_STATE_2_EXTENSION_NAME)                                 \
@@ -145,6 +147,9 @@ VK_DEFINE_HANDLE(VmaAllocator)
 // Define features where the absence of the feature may result in a degraded experience.
 #define FOR_EACH_VK_RECOMMENDED_FEATURE(FEATURE_NAME)                                              \
     FEATURE_NAME(custom_border_color, customBorderColors)                                          \
+    FEATURE_NAME(depth_bias_control, depthBiasControl)                                             \
+    FEATURE_NAME(depth_bias_control, leastRepresentableValueForceUnormRepresentation)              \
+    FEATURE_NAME(depth_bias_control, depthBiasExact)                                               \
     FEATURE_NAME(extended_dynamic_state, extendedDynamicState)                                     \
     FEATURE_NAME(index_type_uint8, indexTypeUint8)                                                 \
     FEATURE_NAME(primitive_topology_list_restart, primitiveTopologyListRestart)                    \
@@ -451,6 +456,11 @@ public:
         return extensions.depth_clip_control;
     }
 
+    /// Returns true if the device supports VK_EXT_depth_bias_control.
+    bool IsExtDepthBiasControlSupported() const {
+        return extensions.depth_bias_control;
+    }
+
     /// Returns true if the device supports VK_EXT_shader_viewport_index_layer.
     bool IsExtShaderViewportIndexLayerSupported() const {
         return extensions.shader_viewport_index_layer;
@@ -606,6 +616,10 @@ public:
         return features.robustness2.nullDescriptor;
     }
 
+    bool HasExactDepthBiasControl() const {
+        return features.depth_bias_control.depthBiasExact;
+    }
+
     u32 GetMaxVertexInputAttributes() const {
         return properties.properties.limits.maxVertexInputAttributes;
     }

src/video_core/vulkan_common/vulkan_wrapper.cpp

@@ -113,6 +113,7 @@ void Load(VkDevice device, DeviceDispatch& dld) noexcept {
     X(vkCmdPushDescriptorSetWithTemplateKHR);
     X(vkCmdSetBlendConstants);
     X(vkCmdSetDepthBias);
+    X(vkCmdSetDepthBias2EXT);
     X(vkCmdSetDepthBounds);
     X(vkCmdSetEvent);
     X(vkCmdSetScissor);

src/video_core/vulkan_common/vulkan_wrapper.h

@@ -226,6 +226,7 @@ struct DeviceDispatch : InstanceDispatch {
     PFN_vkCmdSetBlendConstants vkCmdSetBlendConstants{};
     PFN_vkCmdSetCullModeEXT vkCmdSetCullModeEXT{};
     PFN_vkCmdSetDepthBias vkCmdSetDepthBias{};
+    PFN_vkCmdSetDepthBias2EXT vkCmdSetDepthBias2EXT{};
     PFN_vkCmdSetDepthBounds vkCmdSetDepthBounds{};
     PFN_vkCmdSetDepthBoundsTestEnableEXT vkCmdSetDepthBoundsTestEnableEXT{};
     PFN_vkCmdSetDepthCompareOpEXT vkCmdSetDepthCompareOpEXT{};
@@ -1333,6 +1334,18 @@ public:
         dld->vkCmdSetDepthBias(handle, constant_factor, clamp, slope_factor);
     }
 
+    void SetDepthBias(float constant_factor, float clamp, float slope_factor,
+                      VkDepthBiasRepresentationInfoEXT* extra) const noexcept {
+        VkDepthBiasInfoEXT info{
+            .sType = VK_STRUCTURE_TYPE_DEPTH_BIAS_INFO_EXT,
+            .pNext = extra,
+            .depthBiasConstantFactor = constant_factor,
+            .depthBiasClamp = clamp,
+            .depthBiasSlopeFactor = slope_factor,
+        };
+        dld->vkCmdSetDepthBias2EXT(handle, &info);
+    }
+
     void SetDepthBounds(float min_depth_bounds, float max_depth_bounds) const noexcept {
         dld->vkCmdSetDepthBounds(handle, min_depth_bounds, max_depth_bounds);
     }

src/yuzu/CMakeLists.txt

@@ -195,8 +195,8 @@ add_executable(yuzu
     multiplayer/state.cpp
     multiplayer/state.h
     multiplayer/validation.h
-    play_time.cpp
+    play_time_manager.cpp
-    play_time.h
+    play_time_manager.h
     precompiled_headers.h
     qt_common.cpp
     qt_common.h

src/yuzu/game_list.cpp

@@ -312,8 +312,10 @@ void GameList::OnFilterCloseClicked() {
 }
 
 GameList::GameList(FileSys::VirtualFilesystem vfs_, FileSys::ManualContentProvider* provider_,
-                   Core::System& system_, GMainWindow* parent)
+                   PlayTime::PlayTimeManager& play_time_manager_, Core::System& system_,
-    : QWidget{parent}, vfs{std::move(vfs_)}, provider{provider_}, system{system_} {
+                   GMainWindow* parent)
+    : QWidget{parent}, vfs{std::move(vfs_)}, provider{provider_},
+      play_time_manager{play_time_manager_}, system{system_} {
     watcher = new QFileSystemWatcher(this);
     connect(watcher, &QFileSystemWatcher::directoryChanged, this, &GameList::RefreshGameDirectory);
 
@@ -826,7 +828,7 @@ void GameList::PopulateAsync(QVector<UISettings::GameDir>& game_dirs) {
     emit ShouldCancelWorker();
 
     GameListWorker* worker =
-        new GameListWorker(vfs, provider, game_dirs, compatibility_list, system);
+        new GameListWorker(vfs, provider, game_dirs, compatibility_list, play_time_manager, system);
 
     connect(worker, &GameListWorker::EntryReady, this, &GameList::AddEntry, Qt::QueuedConnection);
     connect(worker, &GameListWorker::DirEntryReady, this, &GameList::AddDirEntry,

src/yuzu/game_list.h

@@ -18,6 +18,7 @@
 #include "core/core.h"
 #include "uisettings.h"
 #include "yuzu/compatibility_list.h"
+#include "yuzu/play_time_manager.h"
 
 namespace Core {
 class System;
@@ -79,7 +80,8 @@ public:
     };
 
     explicit GameList(std::shared_ptr<FileSys::VfsFilesystem> vfs_,
-                      FileSys::ManualContentProvider* provider_, Core::System& system_,
+                      FileSys::ManualContentProvider* provider_,
+                      PlayTime::PlayTimeManager& play_time_manager_, Core::System& system_,
                       GMainWindow* parent = nullptr);
     ~GameList() override;
 
@@ -168,6 +170,7 @@ private:
 
     friend class GameListSearchField;
 
+    const PlayTime::PlayTimeManager& play_time_manager;
     Core::System& system;
 };
 

src/yuzu/game_list_p.h

@@ -18,7 +18,7 @@
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/string_util.h"
-#include "yuzu/play_time.h"
+#include "yuzu/play_time_manager.h"
 #include "yuzu/uisettings.h"
 #include "yuzu/util/util.h"
 

src/yuzu/game_list_worker.cpp

@@ -27,7 +27,6 @@
 #include "yuzu/game_list.h"
 #include "yuzu/game_list_p.h"
 #include "yuzu/game_list_worker.h"
-#include "yuzu/play_time.h"
 #include "yuzu/uisettings.h"
 
 namespace {
@@ -195,6 +194,7 @@ QList<QStandardItem*> MakeGameListEntry(const std::string& path, const std::stri
                                         const std::size_t size, const std::vector<u8>& icon,
                                         Loader::AppLoader& loader, u64 program_id,
                                         const CompatibilityList& compatibility_list,
+                                        const PlayTime::PlayTimeManager& play_time_manager,
                                         const FileSys::PatchManager& patch) {
     const auto it = FindMatchingCompatibilityEntry(compatibility_list, program_id);
 
@@ -213,7 +213,7 @@ QList<QStandardItem*> MakeGameListEntry(const std::string& path, const std::stri
         new GameListItemCompat(compatibility),
         new GameListItem(file_type_string),
         new GameListItemSize(size),
-        new GameListItemPlayTime(PlayTime::GetPlayTime(program_id)),
+        new GameListItemPlayTime(play_time_manager.GetPlayTime(program_id)),
     };
 
     const auto patch_versions = GetGameListCachedObject(
@@ -229,9 +229,12 @@ QList<QStandardItem*> MakeGameListEntry(const std::string& path, const std::stri
 GameListWorker::GameListWorker(FileSys::VirtualFilesystem vfs_,
                                FileSys::ManualContentProvider* provider_,
                                QVector<UISettings::GameDir>& game_dirs_,
-                               const CompatibilityList& compatibility_list_, Core::System& system_)
+                               const CompatibilityList& compatibility_list_,
+                               const PlayTime::PlayTimeManager& play_time_manager_,
+                               Core::System& system_)
     : vfs{std::move(vfs_)}, provider{provider_}, game_dirs{game_dirs_},
-      compatibility_list{compatibility_list_}, system{system_} {}
+      compatibility_list{compatibility_list_},
+      play_time_manager{play_time_manager_}, system{system_} {}
 
 GameListWorker::~GameListWorker() = default;
 
@@ -282,7 +285,7 @@ void GameListWorker::AddTitlesToGameList(GameListDir* parent_dir) {
         }
 
         emit EntryReady(MakeGameListEntry(file->GetFullPath(), name, file->GetSize(), icon, *loader,
-                                          program_id, compatibility_list, patch),
+                                          program_id, compatibility_list, play_time_manager, patch),
                         parent_dir);
     }
 }
@@ -359,7 +362,8 @@ void GameListWorker::ScanFileSystem(ScanTarget target, const std::string& dir_pa
 
                         emit EntryReady(MakeGameListEntry(physical_name, name,
                                                           Common::FS::GetSize(physical_name), icon,
-                                                          *loader, id, compatibility_list, patch),
+                                                          *loader, id, compatibility_list,
+                                                          play_time_manager, patch),
                                         parent_dir);
                     }
                 } else {
@@ -372,9 +376,10 @@ void GameListWorker::ScanFileSystem(ScanTarget target, const std::string& dir_pa
                     const FileSys::PatchManager patch{program_id, system.GetFileSystemController(),
                                                       system.GetContentProvider()};
 
-                    emit EntryReady(
+                    emit EntryReady(MakeGameListEntry(physical_name, name,
-                        MakeGameListEntry(physical_name, name, Common::FS::GetSize(physical_name),
+                                                      Common::FS::GetSize(physical_name), icon,
-                                          icon, *loader, program_id, compatibility_list, patch),
+                                                      *loader, program_id, compatibility_list,
+                                                      play_time_manager, patch),
                                     parent_dir);
                 }
             }

src/yuzu/game_list_worker.h

@@ -13,6 +13,7 @@
 #include <QString>
 
 #include "yuzu/compatibility_list.h"
+#include "yuzu/play_time_manager.h"
 
 namespace Core {
 class System;
@@ -36,7 +37,9 @@ public:
     explicit GameListWorker(std::shared_ptr<FileSys::VfsFilesystem> vfs_,
                             FileSys::ManualContentProvider* provider_,
                             QVector<UISettings::GameDir>& game_dirs_,
-                            const CompatibilityList& compatibility_list_, Core::System& system_);
+                            const CompatibilityList& compatibility_list_,
+                            const PlayTime::PlayTimeManager& play_time_manager_,
+                            Core::System& system_);
     ~GameListWorker() override;
 
     /// Starts the processing of directory tree information.
@@ -76,6 +79,7 @@ private:
     FileSys::ManualContentProvider* provider;
     QVector<UISettings::GameDir>& game_dirs;
     const CompatibilityList& compatibility_list;
+    const PlayTime::PlayTimeManager& play_time_manager;
 
     QStringList watch_list;
     std::atomic_bool stop_processing;

src/yuzu/main.cpp

@@ -146,7 +146,7 @@ static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::Virtual
 #include "yuzu/install_dialog.h"
 #include "yuzu/loading_screen.h"
 #include "yuzu/main.h"
-#include "yuzu/play_time.h"
+#include "yuzu/play_time_manager.h"
 #include "yuzu/startup_checks.h"
 #include "yuzu/uisettings.h"
 #include "yuzu/util/clickable_label.h"
@@ -980,7 +980,7 @@ void GMainWindow::InitializeWidgets() {
     render_window = new GRenderWindow(this, emu_thread.get(), input_subsystem, *system);
     render_window->hide();
 
-    game_list = new GameList(vfs, provider.get(), *system, this);
+    game_list = new GameList(vfs, provider.get(), *play_time_manager, *system, this);
     ui->horizontalLayout->addWidget(game_list);
 
     game_list_placeholder = new GameListPlaceholder(this);
@@ -2477,11 +2477,8 @@ void GMainWindow::OnGameListRemovePlayTimeData(u64 program_id) {
                               QMessageBox::No) != QMessageBox::Yes) {
         return;
     }
-    if (!play_time_manager->ResetProgramPlayTime(program_id)) {
+
-        QMessageBox::warning(this, tr("Error Resetting Play Time Data"),
+    play_time_manager->ResetProgramPlayTime(program_id);
-                             tr("Play time couldn't be cleared"));
-        return;
-    }
     game_list->PopulateAsync(UISettings::values.game_dirs);
 }
 

src/yuzu/play_time_manager.cpp

@@ -0,0 +1,179 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/alignment.h"
+#include "common/fs/file.h"
+#include "common/fs/fs.h"
+#include "common/fs/path_util.h"
+#include "common/logging/log.h"
+#include "common/settings.h"
+#include "common/thread.h"
+#include "core/hle/service/acc/profile_manager.h"
+#include "yuzu/play_time_manager.h"
+
+namespace PlayTime {
+
+namespace {
+
+struct PlayTimeElement {
+    ProgramId program_id;
+    PlayTime play_time;
+};
+
+std::optional<std::filesystem::path> GetCurrentUserPlayTimePath() {
+    const Service::Account::ProfileManager manager;
+    const auto uuid = manager.GetUser(static_cast<s32>(Settings::values.current_user));
+    if (!uuid.has_value()) {
+        return std::nullopt;
+    }
+    return Common::FS::GetYuzuPath(Common::FS::YuzuPath::PlayTimeDir) /
+           uuid->RawString().append(".bin");
+}
+
+[[nodiscard]] bool ReadPlayTimeFile(PlayTimeDatabase& out_play_time_db) {
+    const auto filename = GetCurrentUserPlayTimePath();
+
+    if (!filename.has_value()) {
+        LOG_ERROR(Frontend, "Failed to get current user path");
+        return false;
+    }
+
+    out_play_time_db.clear();
+
+    if (Common::FS::Exists(filename.value())) {
+        Common::FS::IOFile file{filename.value(), Common::FS::FileAccessMode::Read,
+                                Common::FS::FileType::BinaryFile};
+        if (!file.IsOpen()) {
+            LOG_ERROR(Frontend, "Failed to open play time file: {}",
+                      Common::FS::PathToUTF8String(filename.value()));
+            return false;
+        }
+
+        const size_t num_elements = file.GetSize() / sizeof(PlayTimeElement);
+        std::vector<PlayTimeElement> elements(num_elements);
+
+        if (file.ReadSpan<PlayTimeElement>(elements) != num_elements) {
+            return false;
+        }
+
+        for (const auto& [program_id, play_time] : elements) {
+            if (program_id != 0) {
+                out_play_time_db[program_id] = play_time;
+            }
+        }
+    }
+
+    return true;
+}
+
+[[nodiscard]] bool WritePlayTimeFile(const PlayTimeDatabase& play_time_db) {
+    const auto filename = GetCurrentUserPlayTimePath();
+
+    if (!filename.has_value()) {
+        LOG_ERROR(Frontend, "Failed to get current user path");
+        return false;
+    }
+
+    Common::FS::IOFile file{filename.value(), Common::FS::FileAccessMode::Write,
+                            Common::FS::FileType::BinaryFile};
+    if (!file.IsOpen()) {
+        LOG_ERROR(Frontend, "Failed to open play time file: {}",
+                  Common::FS::PathToUTF8String(filename.value()));
+        return false;
+    }
+
+    std::vector<PlayTimeElement> elements;
+    elements.reserve(play_time_db.size());
+
+    for (auto& [program_id, play_time] : play_time_db) {
+        if (program_id != 0) {
+            elements.push_back(PlayTimeElement{program_id, play_time});
+        }
+    }
+
+    return file.WriteSpan<PlayTimeElement>(elements) == elements.size();
+}
+
+} // namespace
+
+PlayTimeManager::PlayTimeManager() {
+    if (!ReadPlayTimeFile(database)) {
+        LOG_ERROR(Frontend, "Failed to read play time database! Resetting to default.");
+    }
+}
+
+PlayTimeManager::~PlayTimeManager() {
+    Save();
+}
+
+void PlayTimeManager::SetProgramId(u64 program_id) {
+    running_program_id = program_id;
+}
+
+void PlayTimeManager::Start() {
+    play_time_thread = std::jthread([&](std::stop_token stop_token) { AutoTimestamp(stop_token); });
+}
+
+void PlayTimeManager::Stop() {
+    play_time_thread = {};
+}
+
+void PlayTimeManager::AutoTimestamp(std::stop_token stop_token) {
+    Common::SetCurrentThreadName("PlayTimeReport");
+
+    using namespace std::literals::chrono_literals;
+    using std::chrono::seconds;
+    using std::chrono::steady_clock;
+
+    auto timestamp = steady_clock::now();
+
+    const auto GetDuration = [&]() -> u64 {
+        const auto last_timestamp = std::exchange(timestamp, steady_clock::now());
+        const auto duration = std::chrono::duration_cast<seconds>(timestamp - last_timestamp);
+        return static_cast<u64>(duration.count());
+    };
+
+    while (!stop_token.stop_requested()) {
+        Common::StoppableTimedWait(stop_token, 30s);
+
+        database[running_program_id] += GetDuration();
+        Save();
+    }
+}
+
+void PlayTimeManager::Save() {
+    if (!WritePlayTimeFile(database)) {
+        LOG_ERROR(Frontend, "Failed to update play time database!");
+    }
+}
+
+u64 PlayTimeManager::GetPlayTime(u64 program_id) const {
+    auto it = database.find(program_id);
+    if (it != database.end()) {
+        return it->second;
+    } else {
+        return 0;
+    }
+}
+
+void PlayTimeManager::ResetProgramPlayTime(u64 program_id) {
+    database.erase(program_id);
+    Save();
+}
+
+QString ReadablePlayTime(qulonglong time_seconds) {
+    if (time_seconds == 0) {
+        return {};
+    }
+    const auto time_minutes = std::max(static_cast<double>(time_seconds) / 60, 1.0);
+    const auto time_hours = static_cast<double>(time_seconds) / 3600;
+    const bool is_minutes = time_minutes < 60;
+    const char* unit = is_minutes ? "m" : "h";
+    const auto value = is_minutes ? time_minutes : time_hours;
+
+    return QStringLiteral("%L1 %2")
+        .arg(value, 0, 'f', !is_minutes && time_seconds % 60 != 0)
+        .arg(QString::fromUtf8(unit));
+}
+
+} // namespace PlayTime

src/yuzu/play_time_manager.h

@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QString>
+
+#include <map>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/polyfill_thread.h"
+
+namespace PlayTime {
+
+using ProgramId = u64;
+using PlayTime = u64;
+using PlayTimeDatabase = std::map<ProgramId, PlayTime>;
+
+class PlayTimeManager {
+public:
+    explicit PlayTimeManager();
+    ~PlayTimeManager();
+
+    YUZU_NON_COPYABLE(PlayTimeManager);
+    YUZU_NON_MOVEABLE(PlayTimeManager);
+
+    u64 GetPlayTime(u64 program_id) const;
+    void ResetProgramPlayTime(u64 program_id);
+    void SetProgramId(u64 program_id);
+    void Start();
+    void Stop();
+
+private:
+    PlayTimeDatabase database;
+    u64 running_program_id;
+    std::jthread play_time_thread;
+    void AutoTimestamp(std::stop_token stop_token);
+    void Save();
+};
+
+QString ReadablePlayTime(qulonglong time_seconds);
+
+} // namespace PlayTime