arm_dynarmic: Remove IsExecuting check from PrepareReschedule

No longer required. HaltExecution is a no-op if it is not currently executing.

CMakeLists.txt

@@ -1,5 +1,5 @@
-# CMake 3.6 required for FindBoost to define IMPORTED libs properly on unknown Boost versions
-cmake_minimum_required(VERSION 3.6)
+cmake_minimum_required(VERSION 3.7)
+
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/externals/cmake-modules")
 include(DownloadExternals)
@@ -187,8 +187,8 @@ find_package(Threads REQUIRED)
 if (ENABLE_SDL2)
     if (YUZU_USE_BUNDLED_SDL2)
         # Detect toolchain and platform
-        if (MSVC14 AND ARCHITECTURE_x86_64)
-            set(SDL2_VER "SDL2-2.0.5")
+        if ((MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1920) AND ARCHITECTURE_x86_64)
+            set(SDL2_VER "SDL2-2.0.8")
         else()
             message(FATAL_ERROR "No bundled SDL2 binaries for your toolchain. Disable YUZU_USE_BUNDLED_SDL2 and provide your own.")
         endif()
@@ -220,7 +220,7 @@ if (YUZU_USE_BUNDLED_UNICORN)
     if (MSVC)
         message(STATUS "unicorn not found, falling back to bundled")
         # Detect toolchain and platform
-        if (MSVC14 AND ARCHITECTURE_x86_64)
+        if ((MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1920) AND ARCHITECTURE_x86_64)
             set(UNICORN_VER "unicorn-yuzu")
         else()
             message(FATAL_ERROR "No bundled Unicorn binaries for your toolchain. Disable YUZU_USE_BUNDLED_UNICORN and provide your own.")
@@ -279,7 +279,7 @@ endif()
 
 if (ENABLE_QT)
     if (YUZU_USE_BUNDLED_QT)
-        if (MSVC14 AND ARCHITECTURE_x86_64)
+        if ((MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1920) AND ARCHITECTURE_x86_64)
             set(QT_VER qt-5.10.0-msvc2015_64)
         else()
             message(FATAL_ERROR "No bundled Qt binaries for your toolchain. Disable YUZU_USE_BUNDLED_QT and provide your own.")
@@ -303,7 +303,7 @@ endif()
 # ======================================
 
 IF (APPLE)
-    FIND_LIBRARY(COCOA_LIBRARY Cocoa)           # Umbrella framework for everything GUI-related
+    find_library(COCOA_LIBRARY Cocoa)           # Umbrella framework for everything GUI-related
     set(PLATFORM_LIBRARIES ${COCOA_LIBRARY} ${IOKIT_LIBRARY} ${COREVIDEO_LIBRARY})
 
     if (CMAKE_CXX_COMPILER_ID STREQUAL Clang)

src/audio_core/audio_renderer.cpp

@@ -26,6 +26,18 @@ AudioRenderer::AudioRenderer(AudioRendererParameter params,
     QueueMixedBuffer(2);
 }
 
+u32 AudioRenderer::GetSampleRate() const {
+    return worker_params.sample_rate;
+}
+
+u32 AudioRenderer::GetSampleCount() const {
+    return worker_params.sample_count;
+}
+
+u32 AudioRenderer::GetMixBufferCount() const {
+    return worker_params.mix_buffer_count;
+}
+
 std::vector<u8> AudioRenderer::UpdateAudioRenderer(const std::vector<u8>& input_params) {
     // Copy UpdateDataHeader struct
     UpdateDataHeader config{};

src/audio_core/audio_renderer.h

@@ -26,7 +26,7 @@ enum class PlayState : u8 {
 struct AudioRendererParameter {
     u32_le sample_rate;
     u32_le sample_count;
-    u32_le unknown_8;
+    u32_le mix_buffer_count;
     u32_le unknown_c;
     u32_le voice_count;
     u32_le sink_count;
@@ -160,6 +160,9 @@ public:
     std::vector<u8> UpdateAudioRenderer(const std::vector<u8>& input_params);
     void QueueMixedBuffer(Buffer::Tag tag);
     void ReleaseAndQueueBuffers();
+    u32 GetSampleRate() const;
+    u32 GetSampleCount() const;
+    u32 GetMixBufferCount() const;
 
 private:
     class VoiceState {

src/audio_core/cubeb_sink.cpp

@@ -4,6 +4,7 @@
 
 #include <algorithm>
 #include <cstring>
+#include <mutex>
 
 #include "audio_core/cubeb_sink.h"
 #include "audio_core/stream.h"
@@ -66,6 +67,8 @@ public:
             return;
         }
 
+        std::lock_guard lock{queue_mutex};
+
         queue.reserve(queue.size() + samples.size() * GetNumChannels());
 
         if (is_6_channel) {
@@ -94,6 +97,7 @@ private:
     u32 num_channels{};
     bool is_6_channel{};
 
+    std::mutex queue_mutex;
     std::vector<s16> queue;
 
     static long DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
@@ -153,6 +157,8 @@ long SinkStreamImpl::DataCallback(cubeb_stream* stream, void* user_data, const v
         return {};
     }
 
+    std::lock_guard lock{impl->queue_mutex};
+
     const size_t frames_to_write{
         std::min(impl->queue.size() / impl->GetNumChannels(), static_cast<size_t>(num_frames))};
 

src/common/color.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <cstring>
+
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "common/vector_math.h"
@@ -55,7 +57,7 @@ constexpr u8 Convert8To6(u8 value) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRGBA8(const u8* bytes) {
+inline Math::Vec4<u8> DecodeRGBA8(const u8* bytes) {
     return {bytes[3], bytes[2], bytes[1], bytes[0]};
 }
 
@@ -64,7 +66,7 @@ inline const Math::Vec4<u8> DecodeRGBA8(const u8* bytes) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRGB8(const u8* bytes) {
+inline Math::Vec4<u8> DecodeRGB8(const u8* bytes) {
     return {bytes[2], bytes[1], bytes[0], 255};
 }
 
@@ -73,7 +75,7 @@ inline const Math::Vec4<u8> DecodeRGB8(const u8* bytes) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRG8(const u8* bytes) {
+inline Math::Vec4<u8> DecodeRG8(const u8* bytes) {
     return {bytes[1], bytes[0], 0, 255};
 }
 
@@ -82,8 +84,9 @@ inline const Math::Vec4<u8> DecodeRG8(const u8* bytes) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRGB565(const u8* bytes) {
-    const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes);
+inline Math::Vec4<u8> DecodeRGB565(const u8* bytes) {
+    u16_le pixel;
+    std::memcpy(&pixel, bytes, sizeof(pixel));
     return {Convert5To8((pixel >> 11) & 0x1F), Convert6To8((pixel >> 5) & 0x3F),
             Convert5To8(pixel & 0x1F), 255};
 }
@@ -93,8 +96,9 @@ inline const Math::Vec4<u8> DecodeRGB565(const u8* bytes) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRGB5A1(const u8* bytes) {
-    const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes);
+inline Math::Vec4<u8> DecodeRGB5A1(const u8* bytes) {
+    u16_le pixel;
+    std::memcpy(&pixel, bytes, sizeof(pixel));
     return {Convert5To8((pixel >> 11) & 0x1F), Convert5To8((pixel >> 6) & 0x1F),
             Convert5To8((pixel >> 1) & 0x1F), Convert1To8(pixel & 0x1)};
 }
@@ -104,8 +108,9 @@ inline const Math::Vec4<u8> DecodeRGB5A1(const u8* bytes) {
  * @param bytes Pointer to encoded source color
  * @return Result color decoded as Math::Vec4<u8>
  */
-inline const Math::Vec4<u8> DecodeRGBA4(const u8* bytes) {
-    const u16_le pixel = *reinterpret_cast<const u16_le*>(bytes);
+inline Math::Vec4<u8> DecodeRGBA4(const u8* bytes) {
+    u16_le pixel;
+    std::memcpy(&pixel, bytes, sizeof(pixel));
     return {Convert4To8((pixel >> 12) & 0xF), Convert4To8((pixel >> 8) & 0xF),
             Convert4To8((pixel >> 4) & 0xF), Convert4To8(pixel & 0xF)};
 }
@@ -116,7 +121,9 @@ inline const Math::Vec4<u8> DecodeRGBA4(const u8* bytes) {
  * @return Depth value as an u32
  */
 inline u32 DecodeD16(const u8* bytes) {
-    return *reinterpret_cast<const u16_le*>(bytes);
+    u16_le data;
+    std::memcpy(&data, bytes, sizeof(data));
+    return data;
 }
 
 /**
@@ -133,7 +140,7 @@ inline u32 DecodeD24(const u8* bytes) {
  * @param bytes Pointer to encoded source values
  * @return Resulting values stored as a Math::Vec2
  */
-inline const Math::Vec2<u32> DecodeD24S8(const u8* bytes) {
+inline Math::Vec2<u32> DecodeD24S8(const u8* bytes) {
     return {static_cast<u32>((bytes[2] << 16) | (bytes[1] << 8) | bytes[0]), bytes[3]};
 }
 
@@ -175,8 +182,10 @@ inline void EncodeRG8(const Math::Vec4<u8>& color, u8* bytes) {
  * @param bytes Destination pointer to store encoded color
  */
 inline void EncodeRGB565(const Math::Vec4<u8>& color, u8* bytes) {
-    *reinterpret_cast<u16_le*>(bytes) =
+    const u16_le data =
         (Convert8To5(color.r()) << 11) | (Convert8To6(color.g()) << 5) | Convert8To5(color.b());
+
+    std::memcpy(bytes, &data, sizeof(data));
 }
 
 /**
@@ -185,9 +194,10 @@ inline void EncodeRGB565(const Math::Vec4<u8>& color, u8* bytes) {
  * @param bytes Destination pointer to store encoded color
  */
 inline void EncodeRGB5A1(const Math::Vec4<u8>& color, u8* bytes) {
-    *reinterpret_cast<u16_le*>(bytes) = (Convert8To5(color.r()) << 11) |
-                                        (Convert8To5(color.g()) << 6) |
-                                        (Convert8To5(color.b()) << 1) | Convert8To1(color.a());
+    const u16_le data = (Convert8To5(color.r()) << 11) | (Convert8To5(color.g()) << 6) |
+                        (Convert8To5(color.b()) << 1) | Convert8To1(color.a());
+
+    std::memcpy(bytes, &data, sizeof(data));
 }
 
 /**
@@ -196,9 +206,10 @@ inline void EncodeRGB5A1(const Math::Vec4<u8>& color, u8* bytes) {
  * @param bytes Destination pointer to store encoded color
  */
 inline void EncodeRGBA4(const Math::Vec4<u8>& color, u8* bytes) {
-    *reinterpret_cast<u16_le*>(bytes) = (Convert8To4(color.r()) << 12) |
-                                        (Convert8To4(color.g()) << 8) |
-                                        (Convert8To4(color.b()) << 4) | Convert8To4(color.a());
+    const u16 data = (Convert8To4(color.r()) << 12) | (Convert8To4(color.g()) << 8) |
+                     (Convert8To4(color.b()) << 4) | Convert8To4(color.a());
+
+    std::memcpy(bytes, &data, sizeof(data));
 }
 
 /**
@@ -207,7 +218,8 @@ inline void EncodeRGBA4(const Math::Vec4<u8>& color, u8* bytes) {
  * @param bytes Pointer where to store the encoded value
  */
 inline void EncodeD16(u32 value, u8* bytes) {
-    *reinterpret_cast<u16_le*>(bytes) = value & 0xFFFF;
+    const u16_le data = static_cast<u16>(value);
+    std::memcpy(bytes, &data, sizeof(data));
 }
 
 /**

src/common/file_util.cpp

@@ -884,11 +884,21 @@ std::string_view RemoveTrailingSlash(std::string_view path) {
     return path;
 }
 
-std::string SanitizePath(std::string_view path_) {
+std::string SanitizePath(std::string_view path_, DirectorySeparator directory_separator) {
     std::string path(path_);
-    std::replace(path.begin(), path.end(), '\\', '/');
+    char type1 = directory_separator == DirectorySeparator::BackwardSlash ? '/' : '\\';
+    char type2 = directory_separator == DirectorySeparator::BackwardSlash ? '\\' : '/';
+
+    if (directory_separator == DirectorySeparator::PlatformDefault) {
+#ifdef _WIN32
+        type1 = '/';
+        type2 = '\\';
+#endif
+    }
+
+    std::replace(path.begin(), path.end(), type1, type2);
     path.erase(std::unique(path.begin(), path.end(),
-                           [](char c1, char c2) { return c1 == '/' && c2 == '/'; }),
+                           [type2](char c1, char c2) { return c1 == type2 && c2 == type2; }),
                path.end());
     return std::string(RemoveTrailingSlash(path));
 }

src/common/file_util.h

@@ -182,8 +182,12 @@ std::vector<T> SliceVector(const std::vector<T>& vector, size_t first, size_t la
     return std::vector<T>(vector.begin() + first, vector.begin() + first + last);
 }
 
-// Removes trailing slash, makes all '\\' into '/', and removes duplicate '/'.
-std::string SanitizePath(std::string_view path);
+enum class DirectorySeparator { ForwardSlash, BackwardSlash, PlatformDefault };
+
+// Removes trailing slash, makes all '\\' into '/', and removes duplicate '/'. Makes '/' into '\\'
+// depending if directory_separator is BackwardSlash or PlatformDefault and running on windows
+std::string SanitizePath(std::string_view path,
+                         DirectorySeparator directory_separator = DirectorySeparator::ForwardSlash);
 
 // simple wrapper for cstdlib file functions to
 // hopefully will make error checking easier

src/common/logging/backend.cpp

@@ -171,15 +171,21 @@ void FileBackend::Write(const Entry& entry) {
     SUB(Service, ARP)                                                                              \
     SUB(Service, BCAT)                                                                             \
     SUB(Service, BPC)                                                                              \
+    SUB(Service, BTDRV)                                                                            \
     SUB(Service, BTM)                                                                              \
     SUB(Service, Capture)                                                                          \
+    SUB(Service, ERPT)                                                                             \
+    SUB(Service, ETicket)                                                                          \
+    SUB(Service, EUPLD)                                                                            \
     SUB(Service, Fatal)                                                                            \
     SUB(Service, FGM)                                                                              \
     SUB(Service, Friend)                                                                           \
     SUB(Service, FS)                                                                               \
+    SUB(Service, GRC)                                                                              \
     SUB(Service, HID)                                                                              \
     SUB(Service, LBL)                                                                              \
     SUB(Service, LDN)                                                                              \
+    SUB(Service, LDR)                                                                              \
     SUB(Service, LM)                                                                               \
     SUB(Service, Migration)                                                                        \
     SUB(Service, Mii)                                                                              \
@@ -188,11 +194,13 @@ void FileBackend::Write(const Entry& entry) {
     SUB(Service, NFC)                                                                              \
     SUB(Service, NFP)                                                                              \
     SUB(Service, NIFM)                                                                             \
+    SUB(Service, NIM)                                                                              \
     SUB(Service, NS)                                                                               \
     SUB(Service, NVDRV)                                                                            \
     SUB(Service, PCIE)                                                                             \
     SUB(Service, PCTL)                                                                             \
     SUB(Service, PCV)                                                                              \
+    SUB(Service, PM)                                                                               \
     SUB(Service, PREPO)                                                                            \
     SUB(Service, PSC)                                                                              \
     SUB(Service, SET)                                                                              \

src/common/logging/log.h

@@ -58,15 +58,21 @@ enum class Class : ClassType {
     Service_Audio,     ///< The Audio (Audio control) service
     Service_BCAT,      ///< The BCAT service
     Service_BPC,       ///< The BPC service
+    Service_BTDRV,     ///< The Bluetooth driver service
     Service_BTM,       ///< The BTM service
     Service_Capture,   ///< The capture service
+    Service_ERPT,      ///< The error reporting service
+    Service_ETicket,   ///< The ETicket service
+    Service_EUPLD,     ///< The error upload service
     Service_Fatal,     ///< The Fatal service
     Service_FGM,       ///< The FGM service
     Service_Friend,    ///< The friend service
     Service_FS,        ///< The FS (Filesystem) service
+    Service_GRC,       ///< The game recording service
     Service_HID,       ///< The HID (Human interface device) service
     Service_LBL,       ///< The LBL (LCD backlight) service
     Service_LDN,       ///< The LDN (Local domain network) service
+    Service_LDR,       ///< The loader service
     Service_LM,        ///< The LM (Logger) service
     Service_Migration, ///< The migration service
     Service_Mii,       ///< The Mii service
@@ -75,11 +81,13 @@ enum class Class : ClassType {
     Service_NFC,       ///< The NFC (Near-field communication) service
     Service_NFP,       ///< The NFP service
     Service_NIFM,      ///< The NIFM (Network interface) service
+    Service_NIM,       ///< The NIM service
     Service_NS,        ///< The NS services
     Service_NVDRV,     ///< The NVDRV (Nvidia driver) service
     Service_PCIE,      ///< The PCIe service
     Service_PCTL,      ///< The PCTL (Parental control) service
     Service_PCV,       ///< The PCV service
+    Service_PM,        ///< The PM service
     Service_PREPO,     ///< The PREPO (Play report) service
     Service_PSC,       ///< The PSC service
     Service_SET,       ///< The SET (Settings) service

src/common/thread_queue_list.h

@@ -16,7 +16,7 @@ struct ThreadQueueList {
     //               (dynamically resizable) circular buffers to remove their overhead when
     //               inserting and popping.
 
-    typedef unsigned int Priority;
+    using Priority = unsigned int;
 
     // Number of priority levels. (Valid levels are [0..NUM_QUEUES).)
     static const Priority NUM_QUEUES = N;
@@ -26,9 +26,9 @@ struct ThreadQueueList {
     }
 
     // Only for debugging, returns priority level.
-    Priority contains(const T& uid) {
+    Priority contains(const T& uid) const {
         for (Priority i = 0; i < NUM_QUEUES; ++i) {
-            Queue& cur = queues[i];
+            const Queue& cur = queues[i];
             if (std::find(cur.data.cbegin(), cur.data.cend(), uid) != cur.data.cend()) {
                 return i;
             }
@@ -37,8 +37,8 @@ struct ThreadQueueList {
         return -1;
     }
 
-    T get_first() {
-        Queue* cur = first;
+    T get_first() const {
+        const Queue* cur = first;
         while (cur != nullptr) {
             if (!cur->data.empty()) {
                 return cur->data.front();

src/common/vector_math.h

@@ -78,7 +78,7 @@ public:
     }
 
     template <typename U = T>
-    constexpr Vec2<std::enable_if_t<std::is_signed<U>::value, U>> operator-() const {
+    constexpr Vec2<std::enable_if_t<std::is_signed_v<U>, U>> operator-() const {
         return {-x, -y};
     }
     constexpr Vec2<decltype(T{} * T{})> operator*(const Vec2& other) const {
@@ -227,7 +227,7 @@ public:
     }
 
     template <typename U = T>
-    constexpr Vec3<std::enable_if_t<std::is_signed<U>::value, U>> operator-() const {
+    constexpr Vec3<std::enable_if_t<std::is_signed_v<U>, U>> operator-() const {
         return {-x, -y, -z};
     }
 
@@ -436,7 +436,7 @@ public:
     }
 
     template <typename U = T>
-    constexpr Vec4<std::enable_if_t<std::is_signed<U>::value, U>> operator-() const {
+    constexpr Vec4<std::enable_if_t<std::is_signed_v<U>, U>> operator-() const {
         return {-x, -y, -z, -w};
     }
 

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -86,7 +86,16 @@ public:
     }
 
     void AddTicks(u64 ticks) override {
-        CoreTiming::AddTicks(ticks - num_interpreted_instructions);
+        // Divide the number of ticks by the amount of CPU cores. TODO(Subv): This yields only a
+        // rough approximation of the amount of executed ticks in the system, it may be thrown off
+        // if not all cores are doing a similar amount of work. Instead of doing this, we should
+        // device a way so that timing is consistent across all cores without increasing the ticks 4
+        // times.
+        u64 amortized_ticks = (ticks - num_interpreted_instructions) / Core::NUM_CPU_CORES;
+        // Always execute at least one tick.
+        amortized_ticks = std::max<u64>(amortized_ticks, 1);
+
+        CoreTiming::AddTicks(amortized_ticks);
         num_interpreted_instructions = 0;
     }
     u64 GetTicksRemaining() override {
@@ -234,9 +243,7 @@ void ARM_Dynarmic::LoadContext(const ThreadContext& ctx) {
 }
 
 void ARM_Dynarmic::PrepareReschedule() {
-    if (jit->IsExecuting()) {
-        jit->HaltExecution();
-    }
+    jit->HaltExecution();
 }
 
 void ARM_Dynarmic::ClearInstructionCache() {

src/core/core.cpp

@@ -88,8 +88,8 @@ System::ResultStatus System::SingleStep() {
     return RunLoop(false);
 }
 
-System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& filepath) {
-    app_loader = Loader::GetLoader(std::make_shared<FileSys::RealVfsFile>(filepath));
+System::ResultStatus System::Load(Frontend::EmuWindow& emu_window, const std::string& filepath) {
+    app_loader = Loader::GetLoader(virtual_filesystem->OpenFile(filepath, FileSys::Mode::Read));
 
     if (!app_loader) {
         LOG_CRITICAL(Core, "Failed to obtain loader for {}!", filepath);
@@ -102,18 +102,8 @@ System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& file
         LOG_CRITICAL(Core, "Failed to determine system mode (Error {})!",
                      static_cast<int>(system_mode.second));
 
-        switch (system_mode.second) {
-        case Loader::ResultStatus::ErrorMissingKeys:
-            return ResultStatus::ErrorLoader_ErrorMissingKeys;
-        case Loader::ResultStatus::ErrorDecrypting:
-            return ResultStatus::ErrorLoader_ErrorDecrypting;
-        case Loader::ResultStatus::ErrorInvalidFormat:
-            return ResultStatus::ErrorLoader_ErrorInvalidFormat;
-        case Loader::ResultStatus::ErrorUnsupportedArch:
-            return ResultStatus::ErrorUnsupportedArch;
-        default:
+        if (system_mode.second != Loader::ResultStatus::Success)
             return ResultStatus::ErrorSystemMode;
-        }
     }
 
     ResultStatus init_result{Init(emu_window)};
@@ -129,17 +119,9 @@ System::ResultStatus System::Load(EmuWindow& emu_window, const std::string& file
         LOG_CRITICAL(Core, "Failed to load ROM (Error {})!", static_cast<int>(load_result));
         System::Shutdown();
 
-        switch (load_result) {
-        case Loader::ResultStatus::ErrorMissingKeys:
-            return ResultStatus::ErrorLoader_ErrorMissingKeys;
-        case Loader::ResultStatus::ErrorDecrypting:
-            return ResultStatus::ErrorLoader_ErrorDecrypting;
-        case Loader::ResultStatus::ErrorInvalidFormat:
-            return ResultStatus::ErrorLoader_ErrorInvalidFormat;
-        case Loader::ResultStatus::ErrorUnsupportedArch:
-            return ResultStatus::ErrorUnsupportedArch;
-        default:
-            return ResultStatus::ErrorLoader;
+        if (load_result != Loader::ResultStatus::Success) {
+            return static_cast<ResultStatus>(static_cast<u32>(ResultStatus::ErrorLoader) +
+                                             static_cast<u32>(load_result));
         }
     }
     status = ResultStatus::Success;
@@ -169,11 +151,15 @@ Cpu& System::CpuCore(size_t core_index) {
     return *cpu_cores[core_index];
 }
 
-System::ResultStatus System::Init(EmuWindow& emu_window) {
+System::ResultStatus System::Init(Frontend::EmuWindow& emu_window) {
     LOG_DEBUG(HW_Memory, "initialized OK");
 
     CoreTiming::Init();
 
+    // Create a default fs if one doesn't already exist.
+    if (virtual_filesystem == nullptr)
+        virtual_filesystem = std::make_shared<FileSys::RealVfsFilesystem>();
+
     current_process = Kernel::Process::Create("main");
 
     cpu_barrier = std::make_shared<CpuBarrier>();
@@ -186,7 +172,7 @@ System::ResultStatus System::Init(EmuWindow& emu_window) {
     service_manager = std::make_shared<Service::SM::ServiceManager>();
 
     Kernel::Init();
-    Service::Init(service_manager);
+    Service::Init(service_manager, virtual_filesystem);
     GDBStub::Init();
 
     renderer = VideoCore::CreateRenderer(emu_window);

src/core/core.h

@@ -17,12 +17,17 @@
 #include "core/memory.h"
 #include "core/perf_stats.h"
 #include "core/telemetry_session.h"
+#include "file_sys/vfs_real.h"
+#include "hle/service/filesystem/filesystem.h"
 #include "video_core/debug_utils/debug_utils.h"
 #include "video_core/gpu.h"
 
-class EmuWindow;
 class ARM_Interface;
 
+namespace Core::Frontend {
+class EmuWindow;
+}
+
 namespace Service::SM {
 class ServiceManager;
 }
@@ -47,21 +52,15 @@ public:
 
     /// Enumeration representing the return values of the System Initialize and Load process.
     enum class ResultStatus : u32 {
-        Success,                      ///< Succeeded
-        ErrorNotInitialized,          ///< Error trying to use core prior to initialization
-        ErrorGetLoader,               ///< Error finding the correct application loader
-        ErrorSystemMode,              ///< Error determining the system mode
-        ErrorLoader,                  ///< Error loading the specified application
-        ErrorLoader_ErrorMissingKeys, ///< Error because the key/keys needed to run could not be
-                                      ///< found.
-        ErrorLoader_ErrorDecrypting,  ///< Error loading the specified application due to encryption
-        ErrorLoader_ErrorInvalidFormat, ///< Error loading the specified application due to an
-                                        /// invalid format
-        ErrorSystemFiles,               ///< Error in finding system files
-        ErrorSharedFont,                ///< Error in finding shared font
-        ErrorVideoCore,                 ///< Error in the video core
-        ErrorUnsupportedArch,           ///< Unsupported Architecture (32-Bit ROMs)
-        ErrorUnknown                    ///< Any other error
+        Success,             ///< Succeeded
+        ErrorNotInitialized, ///< Error trying to use core prior to initialization
+        ErrorGetLoader,      ///< Error finding the correct application loader
+        ErrorSystemMode,     ///< Error determining the system mode
+        ErrorSystemFiles,    ///< Error in finding system files
+        ErrorSharedFont,     ///< Error in finding shared font
+        ErrorVideoCore,      ///< Error in the video core
+        ErrorUnknown,        ///< Any other error
+        ErrorLoader,         ///< The base for loader errors (too many to repeat)
     };
 
     /**
@@ -103,7 +102,7 @@ public:
      * @param filepath String path to the executable application to load on the host file system.
      * @returns ResultStatus code, indicating if the operation succeeded.
      */
-    ResultStatus Load(EmuWindow& emu_window, const std::string& filepath);
+    ResultStatus Load(Frontend::EmuWindow& emu_window, const std::string& filepath);
 
     /**
      * Indicates if the emulated system is powered on (all subsystems initialized and able to run an
@@ -211,6 +210,14 @@ public:
         return debug_context;
     }
 
+    void SetFilesystem(FileSys::VirtualFilesystem vfs) {
+        virtual_filesystem = std::move(vfs);
+    }
+
+    FileSys::VirtualFilesystem GetFilesystem() const {
+        return virtual_filesystem;
+    }
+
 private:
     System();
 
@@ -223,8 +230,10 @@ private:
      *                   input.
      * @return ResultStatus code, indicating if the operation succeeded.
      */
-    ResultStatus Init(EmuWindow& emu_window);
+    ResultStatus Init(Frontend::EmuWindow& emu_window);
 
+    /// RealVfsFilesystem instance
+    FileSys::VirtualFilesystem virtual_filesystem;
     /// AppLoader used to load the current executing application
     std::unique_ptr<Loader::AppLoader> app_loader;
     std::unique_ptr<VideoCore::RendererBase> renderer;

src/core/core_cpu.cpp

@@ -14,6 +14,7 @@
 #include "core/core_timing.h"
 #include "core/hle/kernel/scheduler.h"
 #include "core/hle/kernel/thread.h"
+#include "core/hle/lock.h"
 #include "core/settings.h"
 
 namespace Core {
@@ -90,6 +91,7 @@ void Cpu::RunLoop(bool tight_loop) {
         LOG_TRACE(Core, "Core-{} idling", core_index);
 
         if (IsMainCore()) {
+            // TODO(Subv): Only let CoreTiming idle if all 4 cores are idling.
             CoreTiming::Idle();
             CoreTiming::Advance();
         }
@@ -125,6 +127,8 @@ void Cpu::Reschedule() {
     }
 
     reschedule_pending = false;
+    // Lock the global kernel mutex when we manipulate the HLE state
+    std::lock_guard<std::recursive_mutex> lock(HLE::g_hle_lock);
     scheduler->Reschedule();
 }
 

src/core/core_cpu.h

@@ -79,7 +79,7 @@ private:
     std::shared_ptr<CpuBarrier> cpu_barrier;
     std::shared_ptr<Kernel::Scheduler> scheduler;
 
-    bool reschedule_pending{};
+    std::atomic<bool> reschedule_pending = false;
     size_t core_index;
 };
 

src/core/core_timing.cpp

@@ -135,11 +135,9 @@ void ClearPendingEvents() {
 void ScheduleEvent(s64 cycles_into_future, const EventType* event_type, u64 userdata) {
     ASSERT(event_type != nullptr);
     s64 timeout = GetTicks() + cycles_into_future;
-
     // If this event needs to be scheduled before the next advance(), force one early
     if (!is_global_timer_sane)
         ForceExceptionCheck(cycles_into_future);
-
     event_queue.emplace_back(Event{timeout, event_fifo_id++, userdata, event_type});
     std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
 }

src/core/file_sys/card_image.cpp

@@ -12,14 +12,16 @@
 
 namespace FileSys {
 
+constexpr std::array<const char*, 0x4> partition_names = {"update", "normal", "secure", "logo"};
+
 XCI::XCI(VirtualFile file_) : file(std::move(file_)), partitions(0x4) {
     if (file->ReadObject(&header) != sizeof(GamecardHeader)) {
-        status = Loader::ResultStatus::ErrorInvalidFormat;
+        status = Loader::ResultStatus::ErrorBadXCIHeader;
         return;
     }
 
     if (header.magic != Common::MakeMagic('H', 'E', 'A', 'D')) {
-        status = Loader::ResultStatus::ErrorInvalidFormat;
+        status = Loader::ResultStatus::ErrorBadXCIHeader;
         return;
     }
 
@@ -31,9 +33,6 @@ XCI::XCI(VirtualFile file_) : file(std::move(file_)), partitions(0x4) {
         return;
     }
 
-    static constexpr std::array<const char*, 0x4> partition_names = {"update", "normal", "secure",
-                                                                     "logo"};
-
     for (XCIPartition partition :
          {XCIPartition::Update, XCIPartition::Normal, XCIPartition::Secure, XCIPartition::Logo}) {
         auto raw = main_hfs.GetFile(partition_names[static_cast<size_t>(partition)]);
@@ -108,19 +107,19 @@ VirtualFile XCI::GetNCAFileByType(NCAContentType type) const {
     return nullptr;
 }
 
-std::vector<std::shared_ptr<VfsFile>> XCI::GetFiles() const {
+std::vector<VirtualFile> XCI::GetFiles() const {
     return {};
 }
 
-std::vector<std::shared_ptr<VfsDirectory>> XCI::GetSubdirectories() const {
-    return std::vector<std::shared_ptr<VfsDirectory>>();
+std::vector<VirtualDir> XCI::GetSubdirectories() const {
+    return {};
 }
 
 std::string XCI::GetName() const {
     return file->GetName();
 }
 
-std::shared_ptr<VfsDirectory> XCI::GetParentDirectory() const {
+VirtualDir XCI::GetParentDirectory() const {
     return file->GetContainingDirectory();
 }
 
@@ -130,15 +129,21 @@ bool XCI::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
 
 Loader::ResultStatus XCI::AddNCAFromPartition(XCIPartition part) {
     if (partitions[static_cast<size_t>(part)] == nullptr) {
-        return Loader::ResultStatus::ErrorInvalidFormat;
+        return Loader::ResultStatus::ErrorXCIMissingPartition;
     }
 
     for (const VirtualFile& file : partitions[static_cast<size_t>(part)]->GetFiles()) {
         if (file->GetExtension() != "nca")
             continue;
         auto nca = std::make_shared<NCA>(file);
-        if (nca->GetStatus() == Loader::ResultStatus::Success)
+        if (nca->GetStatus() == Loader::ResultStatus::Success) {
             ncas.push_back(std::move(nca));
+        } else {
+            const u16 error_id = static_cast<u16>(nca->GetStatus());
+            LOG_CRITICAL(Loader, "Could not load NCA {}/{}, failed with error code {:04X} ({})",
+                         partition_names[static_cast<size_t>(part)], nca->GetName(), error_id,
+                         Loader::GetMessageForResultStatus(nca->GetStatus()));
+        }
     }
 
     return Loader::ResultStatus::Success;

src/core/file_sys/card_image.h

@@ -71,13 +71,13 @@ public:
     std::shared_ptr<NCA> GetNCAByType(NCAContentType type) const;
     VirtualFile GetNCAFileByType(NCAContentType type) const;
 
-    std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
+    std::vector<VirtualFile> GetFiles() const override;
 
-    std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
+    std::vector<VirtualDir> GetSubdirectories() const override;
 
     std::string GetName() const override;
 
-    std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
+    VirtualDir GetParentDirectory() const override;
 
 protected:
     bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;

src/core/file_sys/content_archive.cpp

@@ -113,17 +113,27 @@ boost::optional<Core::Crypto::Key128> NCA::GetKeyAreaKey(NCASectionCryptoType ty
     return out;
 }
 
-boost::optional<Core::Crypto::Key128> NCA::GetTitlekey() const {
+boost::optional<Core::Crypto::Key128> NCA::GetTitlekey() {
     const auto master_key_id = GetCryptoRevision();
 
     u128 rights_id{};
     memcpy(rights_id.data(), header.rights_id.data(), 16);
-    if (rights_id == u128{})
+    if (rights_id == u128{}) {
+        status = Loader::ResultStatus::ErrorInvalidRightsID;
         return boost::none;
+    }
 
     auto titlekey = keys.GetKey(Core::Crypto::S128KeyType::Titlekey, rights_id[1], rights_id[0]);
-    if (titlekey == Core::Crypto::Key128{})
+    if (titlekey == Core::Crypto::Key128{}) {
+        status = Loader::ResultStatus::ErrorMissingTitlekey;
         return boost::none;
+    }
+
+    if (!keys.HasKey(Core::Crypto::S128KeyType::Titlekek, master_key_id)) {
+        status = Loader::ResultStatus::ErrorMissingTitlekek;
+        return boost::none;
+    }
+
     Core::Crypto::AESCipher<Core::Crypto::Key128> cipher(
         keys.GetKey(Core::Crypto::S128KeyType::Titlekek, master_key_id), Core::Crypto::Mode::ECB);
     cipher.Transcode(titlekey.data(), titlekey.size(), titlekey.data(), Core::Crypto::Op::Decrypt);
@@ -131,7 +141,7 @@ boost::optional<Core::Crypto::Key128> NCA::GetTitlekey() const {
     return titlekey;
 }
 
-VirtualFile NCA::Decrypt(NCASectionHeader s_header, VirtualFile in, u64 starting_offset) const {
+VirtualFile NCA::Decrypt(NCASectionHeader s_header, VirtualFile in, u64 starting_offset) {
     if (!encrypted)
         return in;
 
@@ -143,15 +153,22 @@ VirtualFile NCA::Decrypt(NCASectionHeader s_header, VirtualFile in, u64 starting
         LOG_DEBUG(Crypto, "called with mode=CTR, starting_offset={:016X}", starting_offset);
         {
             boost::optional<Core::Crypto::Key128> key = boost::none;
-            if (std::find_if_not(header.rights_id.begin(), header.rights_id.end(),
-                                 [](char c) { return c == 0; }) == header.rights_id.end()) {
-                key = GetKeyAreaKey(NCASectionCryptoType::CTR);
-            } else {
+            if (has_rights_id) {
+                status = Loader::ResultStatus::Success;
                 key = GetTitlekey();
+                if (key == boost::none) {
+                    if (status == Loader::ResultStatus::Success)
+                        status = Loader::ResultStatus::ErrorMissingTitlekey;
+                    return nullptr;
+                }
+            } else {
+                key = GetKeyAreaKey(NCASectionCryptoType::CTR);
+                if (key == boost::none) {
+                    status = Loader::ResultStatus::ErrorMissingKeyAreaKey;
+                    return nullptr;
+                }
             }
 
-            if (key == boost::none)
-                return nullptr;
             auto out = std::make_shared<Core::Crypto::CTREncryptionLayer>(
                 std::move(in), key.value(), starting_offset);
             std::vector<u8> iv(16);
@@ -170,16 +187,31 @@ VirtualFile NCA::Decrypt(NCASectionHeader s_header, VirtualFile in, u64 starting
 }
 
 NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
+    status = Loader::ResultStatus::Success;
+
     if (file == nullptr) {
-        status = Loader::ResultStatus::ErrorInvalidFormat;
+        status = Loader::ResultStatus::ErrorNullFile;
         return;
     }
-    if (sizeof(NCAHeader) != file->ReadObject(&header))
+
+    if (sizeof(NCAHeader) != file->ReadObject(&header)) {
         LOG_ERROR(Loader, "File reader errored out during header read.");
+        status = Loader::ResultStatus::ErrorBadNCAHeader;
+        return;
+    }
 
     encrypted = false;
 
     if (!IsValidNCA(header)) {
+        if (header.magic == Common::MakeMagic('N', 'C', 'A', '2')) {
+            status = Loader::ResultStatus::ErrorNCA2;
+            return;
+        }
+        if (header.magic == Common::MakeMagic('N', 'C', 'A', '0')) {
+            status = Loader::ResultStatus::ErrorNCA0;
+            return;
+        }
+
         NCAHeader dec_header{};
         Core::Crypto::AESCipher<Core::Crypto::Key256> cipher(
             keys.GetKey(Core::Crypto::S256KeyType::Header), Core::Crypto::Mode::XTS);
@@ -189,14 +221,26 @@ NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
             header = dec_header;
             encrypted = true;
         } else {
+            if (dec_header.magic == Common::MakeMagic('N', 'C', 'A', '2')) {
+                status = Loader::ResultStatus::ErrorNCA2;
+                return;
+            }
+            if (dec_header.magic == Common::MakeMagic('N', 'C', 'A', '0')) {
+                status = Loader::ResultStatus::ErrorNCA0;
+                return;
+            }
+
             if (!keys.HasKey(Core::Crypto::S256KeyType::Header))
-                status = Loader::ResultStatus::ErrorMissingKeys;
+                status = Loader::ResultStatus::ErrorMissingHeaderKey;
             else
-                status = Loader::ResultStatus::ErrorDecrypting;
+                status = Loader::ResultStatus::ErrorIncorrectHeaderKey;
             return;
         }
     }
 
+    has_rights_id = std::find_if_not(header.rights_id.begin(), header.rights_id.end(),
+                                     [](char c) { return c == '\0'; }) != header.rights_id.end();
+
     const std::ptrdiff_t number_sections =
         std::count_if(std::begin(header.section_tables), std::end(header.section_tables),
                       [](NCASectionTableEntry entry) { return entry.media_offset > 0; });
@@ -229,7 +273,12 @@ NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
                 files.push_back(std::move(dec));
                 romfs = files.back();
             } else {
-                status = Loader::ResultStatus::ErrorMissingKeys;
+                if (status != Loader::ResultStatus::Success)
+                    return;
+                if (has_rights_id)
+                    status = Loader::ResultStatus::ErrorIncorrectTitlekeyOrTitlekek;
+                else
+                    status = Loader::ResultStatus::ErrorIncorrectKeyAreaKey;
                 return;
             }
         } else if (section.raw.header.filesystem_type == NCASectionFilesystemType::PFS0) {
@@ -249,7 +298,12 @@ NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
                         exefs = dirs.back();
                 }
             } else {
-                status = Loader::ResultStatus::ErrorMissingKeys;
+                if (status != Loader::ResultStatus::Success)
+                    return;
+                if (has_rights_id)
+                    status = Loader::ResultStatus::ErrorIncorrectTitlekeyOrTitlekek;
+                else
+                    status = Loader::ResultStatus::ErrorIncorrectKeyAreaKey;
                 return;
             }
         }

src/core/file_sys/content_archive.h

@@ -98,8 +98,8 @@ protected:
 private:
     u8 GetCryptoRevision() const;
     boost::optional<Core::Crypto::Key128> GetKeyAreaKey(NCASectionCryptoType type) const;
-    boost::optional<Core::Crypto::Key128> GetTitlekey() const;
-    VirtualFile Decrypt(NCASectionHeader header, VirtualFile in, u64 starting_offset) const;
+    boost::optional<Core::Crypto::Key128> GetTitlekey();
+    VirtualFile Decrypt(NCASectionHeader header, VirtualFile in, u64 starting_offset);
 
     std::vector<VirtualDir> dirs;
     std::vector<VirtualFile> files;
@@ -109,6 +109,7 @@ private:
     VirtualFile file;
 
     NCAHeader header{};
+    bool has_rights_id{};
 
     Loader::ResultStatus status{};
 

src/core/file_sys/directory.h

@@ -4,8 +4,9 @@
 
 #pragma once
 
-#include <array>
 #include <cstddef>
+#include <iterator>
+#include <string_view>
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 
@@ -21,9 +22,14 @@ enum EntryType : u8 {
 
 // Structure of a directory entry, from
 // http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry
-const size_t FILENAME_LENGTH = 0x300;
 struct Entry {
-    char filename[FILENAME_LENGTH];
+    Entry(std::string_view view, EntryType entry_type, u64 entry_size)
+        : type{entry_type}, file_size{entry_size} {
+        const size_t copy_size = view.copy(filename, std::size(filename) - 1);
+        filename[copy_size] = '\0';
+    }
+
+    char filename[0x300];
     INSERT_PADDING_BYTES(4);
     EntryType type;
     INSERT_PADDING_BYTES(3);

src/core/file_sys/partition_filesystem.cpp

@@ -24,19 +24,19 @@ bool PartitionFilesystem::Header::HasValidMagicValue() const {
 PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
     // At least be as large as the header
     if (file->GetSize() < sizeof(Header)) {
-        status = Loader::ResultStatus::Error;
+        status = Loader::ResultStatus::ErrorBadPFSHeader;
         return;
     }
 
     // For cartridges, HFSs can get very large, so we need to calculate the size up to
     // the actual content itself instead of just blindly reading in the entire file.
     if (sizeof(Header) != file->ReadObject(&pfs_header)) {
-        status = Loader::ResultStatus::Error;
+        status = Loader::ResultStatus::ErrorBadPFSHeader;
         return;
     }
 
     if (!pfs_header.HasValidMagicValue()) {
-        status = Loader::ResultStatus::ErrorInvalidFormat;
+        status = Loader::ResultStatus::ErrorBadPFSHeader;
         return;
     }
 
@@ -51,7 +51,7 @@ PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
     const size_t total_size = file_data.size();
 
     if (total_size != metadata_size) {
-        status = Loader::ResultStatus::Error;
+        status = Loader::ResultStatus::ErrorIncorrectPFSFileSize;
         return;
     }
 

src/core/file_sys/partition_filesystem.h

@@ -13,7 +13,7 @@
 #include "core/file_sys/vfs.h"
 
 namespace Loader {
-enum class ResultStatus;
+enum class ResultStatus : u16;
 }
 
 namespace FileSys {

src/core/file_sys/program_metadata.cpp

@@ -12,26 +12,26 @@ namespace FileSys {
 Loader::ResultStatus ProgramMetadata::Load(VirtualFile file) {
     size_t total_size = static_cast<size_t>(file->GetSize());
     if (total_size < sizeof(Header))
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadNPDMHeader;
 
     // TODO(DarkLordZach): Use ReadObject when Header/AcidHeader becomes trivially copyable.
     std::vector<u8> npdm_header_data = file->ReadBytes(sizeof(Header));
     if (sizeof(Header) != npdm_header_data.size())
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadNPDMHeader;
     std::memcpy(&npdm_header, npdm_header_data.data(), sizeof(Header));
 
     std::vector<u8> acid_header_data = file->ReadBytes(sizeof(AcidHeader), npdm_header.acid_offset);
     if (sizeof(AcidHeader) != acid_header_data.size())
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadACIDHeader;
     std::memcpy(&acid_header, acid_header_data.data(), sizeof(AcidHeader));
 
     if (sizeof(AciHeader) != file->ReadObject(&aci_header, npdm_header.aci_offset))
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadACIHeader;
 
     if (sizeof(FileAccessControl) != file->ReadObject(&acid_file_access, acid_header.fac_offset))
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadFileAccessControl;
     if (sizeof(FileAccessHeader) != file->ReadObject(&aci_file_access, aci_header.fah_offset))
-        return Loader::ResultStatus::Error;
+        return Loader::ResultStatus::ErrorBadFileAccessHeader;
 
     return Loader::ResultStatus::Success;
 }

src/core/file_sys/program_metadata.h

@@ -13,7 +13,7 @@
 #include "partition_filesystem.h"
 
 namespace Loader {
-enum class ResultStatus;
+enum class ResultStatus : u16;
 }
 
 namespace FileSys {

src/core/file_sys/savedata_factory.h

@@ -7,6 +7,7 @@
 #include <memory>
 #include <string>
 #include "common/common_types.h"
+#include "common/swap.h"
 #include "core/hle/result.h"
 
 namespace FileSys {

src/core/file_sys/vfs.cpp

@@ -4,12 +4,160 @@
 
 #include <algorithm>
 #include <numeric>
+#include <string>
+#include "common/common_paths.h"
 #include "common/file_util.h"
 #include "common/logging/backend.h"
 #include "core/file_sys/vfs.h"
 
 namespace FileSys {
 
+VfsFilesystem::VfsFilesystem(VirtualDir root_) : root(std::move(root_)) {}
+
+VfsFilesystem::~VfsFilesystem() = default;
+
+std::string VfsFilesystem::GetName() const {
+    return root->GetName();
+}
+
+bool VfsFilesystem::IsReadable() const {
+    return root->IsReadable();
+}
+
+bool VfsFilesystem::IsWritable() const {
+    return root->IsWritable();
+}
+
+VfsEntryType VfsFilesystem::GetEntryType(std::string_view path_) const {
+    const auto path = FileUtil::SanitizePath(path_);
+    if (root->GetFileRelative(path) != nullptr)
+        return VfsEntryType::File;
+    if (root->GetDirectoryRelative(path) != nullptr)
+        return VfsEntryType::Directory;
+
+    return VfsEntryType::None;
+}
+
+VirtualFile VfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_);
+    return root->GetFileRelative(path);
+}
+
+VirtualFile VfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_);
+    return root->CreateFileRelative(path);
+}
+
+VirtualFile VfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
+    const auto old_path = FileUtil::SanitizePath(old_path_);
+    const auto new_path = FileUtil::SanitizePath(new_path_);
+
+    // VfsDirectory impls are only required to implement copy across the current directory.
+    if (FileUtil::GetParentPath(old_path) == FileUtil::GetParentPath(new_path)) {
+        if (!root->Copy(FileUtil::GetFilename(old_path), FileUtil::GetFilename(new_path)))
+            return nullptr;
+        return OpenFile(new_path, Mode::ReadWrite);
+    }
+
+    // Do it using RawCopy. Non-default impls are encouraged to optimize this.
+    const auto old_file = OpenFile(old_path, Mode::Read);
+    if (old_file == nullptr)
+        return nullptr;
+    auto new_file = OpenFile(new_path, Mode::Read);
+    if (new_file != nullptr)
+        return nullptr;
+    new_file = CreateFile(new_path, Mode::Write);
+    if (new_file == nullptr)
+        return nullptr;
+    if (!VfsRawCopy(old_file, new_file))
+        return nullptr;
+    return new_file;
+}
+
+VirtualFile VfsFilesystem::MoveFile(std::string_view old_path, std::string_view new_path) {
+    const auto sanitized_old_path = FileUtil::SanitizePath(old_path);
+    const auto sanitized_new_path = FileUtil::SanitizePath(new_path);
+
+    // Again, non-default impls are highly encouraged to provide a more optimized version of this.
+    auto out = CopyFile(sanitized_old_path, sanitized_new_path);
+    if (out == nullptr)
+        return nullptr;
+    if (DeleteFile(sanitized_old_path))
+        return out;
+    return nullptr;
+}
+
+bool VfsFilesystem::DeleteFile(std::string_view path_) {
+    const auto path = FileUtil::SanitizePath(path_);
+    auto parent = OpenDirectory(FileUtil::GetParentPath(path), Mode::Write);
+    if (parent == nullptr)
+        return false;
+    return parent->DeleteFile(FileUtil::GetFilename(path));
+}
+
+VirtualDir VfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_);
+    return root->GetDirectoryRelative(path);
+}
+
+VirtualDir VfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_);
+    return root->CreateDirectoryRelative(path);
+}
+
+VirtualDir VfsFilesystem::CopyDirectory(std::string_view old_path_, std::string_view new_path_) {
+    const auto old_path = FileUtil::SanitizePath(old_path_);
+    const auto new_path = FileUtil::SanitizePath(new_path_);
+
+    // Non-default impls are highly encouraged to provide a more optimized version of this.
+    auto old_dir = OpenDirectory(old_path, Mode::Read);
+    if (old_dir == nullptr)
+        return nullptr;
+    auto new_dir = OpenDirectory(new_path, Mode::Read);
+    if (new_dir != nullptr)
+        return nullptr;
+    new_dir = CreateDirectory(new_path, Mode::Write);
+    if (new_dir == nullptr)
+        return nullptr;
+
+    for (const auto& file : old_dir->GetFiles()) {
+        const auto x =
+            CopyFile(old_path + DIR_SEP + file->GetName(), new_path + DIR_SEP + file->GetName());
+        if (x == nullptr)
+            return nullptr;
+    }
+
+    for (const auto& dir : old_dir->GetSubdirectories()) {
+        const auto x =
+            CopyDirectory(old_path + DIR_SEP + dir->GetName(), new_path + DIR_SEP + dir->GetName());
+        if (x == nullptr)
+            return nullptr;
+    }
+
+    return new_dir;
+}
+
+VirtualDir VfsFilesystem::MoveDirectory(std::string_view old_path, std::string_view new_path) {
+    const auto sanitized_old_path = FileUtil::SanitizePath(old_path);
+    const auto sanitized_new_path = FileUtil::SanitizePath(new_path);
+
+    // Non-default impls are highly encouraged to provide a more optimized version of this.
+    auto out = CopyDirectory(sanitized_old_path, sanitized_new_path);
+    if (out == nullptr)
+        return nullptr;
+    if (DeleteDirectory(sanitized_old_path))
+        return out;
+    return nullptr;
+}
+
+bool VfsFilesystem::DeleteDirectory(std::string_view path_) {
+    const auto path = FileUtil::SanitizePath(path_);
+    auto parent = OpenDirectory(FileUtil::GetParentPath(path), Mode::Write);
+    if (parent == nullptr)
+        return false;
+    return parent->DeleteSubdirectoryRecursive(FileUtil::GetFilename(path));
+}
+
 VfsFile::~VfsFile() = default;
 
 std::string VfsFile::GetExtension() const {

src/core/file_sys/vfs.h

@@ -11,17 +11,79 @@
 #include <vector>
 #include "boost/optional.hpp"
 #include "common/common_types.h"
+#include "core/file_sys/mode.h"
 
 namespace FileSys {
-struct VfsFile;
-struct VfsDirectory;
 
-// Convenience typedefs to use VfsDirectory and VfsFile
-using VirtualDir = std::shared_ptr<FileSys::VfsDirectory>;
-using VirtualFile = std::shared_ptr<FileSys::VfsFile>;
+class VfsDirectory;
+class VfsFile;
+class VfsFilesystem;
+
+// Convenience typedefs to use Vfs* interfaces
+using VirtualFilesystem = std::shared_ptr<VfsFilesystem>;
+using VirtualDir = std::shared_ptr<VfsDirectory>;
+using VirtualFile = std::shared_ptr<VfsFile>;
+
+// An enumeration representing what can be at the end of a path in a VfsFilesystem
+enum class VfsEntryType {
+    None,
+    File,
+    Directory,
+};
+
+// A class representing an abstract filesystem. A default implementation given the root VirtualDir
+// is provided for convenience, but if the Vfs implementation has any additional state or
+// functionality, they will need to override.
+class VfsFilesystem : NonCopyable {
+public:
+    explicit VfsFilesystem(VirtualDir root);
+    virtual ~VfsFilesystem();
+
+    // Gets the friendly name for the filesystem.
+    virtual std::string GetName() const;
+
+    // Return whether or not the user has read permissions on this filesystem.
+    virtual bool IsReadable() const;
+    // Return whether or not the user has write permission on this filesystem.
+    virtual bool IsWritable() const;
+
+    // Determine if the entry at path is non-existant, a file, or a directory.
+    virtual VfsEntryType GetEntryType(std::string_view path) const;
+
+    // Opens the file with path relative to root. If it doesn't exist, returns nullptr.
+    virtual VirtualFile OpenFile(std::string_view path, Mode perms);
+    // Creates a new, empty file at path
+    virtual VirtualFile CreateFile(std::string_view path, Mode perms);
+    // Copies the file from old_path to new_path, returning the new file on success and nullptr on
+    // failure.
+    virtual VirtualFile CopyFile(std::string_view old_path, std::string_view new_path);
+    // Moves the file from old_path to new_path, returning the moved file on success and nullptr on
+    // failure.
+    virtual VirtualFile MoveFile(std::string_view old_path, std::string_view new_path);
+    // Deletes the file with path relative to root, returing true on success.
+    virtual bool DeleteFile(std::string_view path);
+
+    // Opens the directory with path relative to root. If it doesn't exist, returns nullptr.
+    virtual VirtualDir OpenDirectory(std::string_view path, Mode perms);
+    // Creates a new, empty directory at path
+    virtual VirtualDir CreateDirectory(std::string_view path, Mode perms);
+    // Copies the directory from old_path to new_path, returning the new directory on success and
+    // nullptr on failure.
+    virtual VirtualDir CopyDirectory(std::string_view old_path, std::string_view new_path);
+    // Moves the directory from old_path to new_path, returning the moved directory on success and
+    // nullptr on failure.
+    virtual VirtualDir MoveDirectory(std::string_view old_path, std::string_view new_path);
+    // Deletes the directory with path relative to root, returing true on success.
+    virtual bool DeleteDirectory(std::string_view path);
+
+protected:
+    // Root directory in default implementation.
+    VirtualDir root;
+};
 
 // A class representing a file in an abstract filesystem.
-struct VfsFile : NonCopyable {
+class VfsFile : NonCopyable {
+public:
     virtual ~VfsFile();
 
     // Retrieves the file name.
@@ -119,7 +181,8 @@ struct VfsFile : NonCopyable {
 };
 
 // A class representing a directory in an abstract filesystem.
-struct VfsDirectory : NonCopyable {
+class VfsDirectory : NonCopyable {
+public:
     virtual ~VfsDirectory();
 
     // Retrives the file located at path as if the current directory was root. Returns nullptr if
@@ -235,7 +298,8 @@ protected:
 
 // A convenience partial-implementation of VfsDirectory that stubs out methods that should only work
 // if writable. This is to avoid redundant empty methods everywhere.
-struct ReadOnlyVfsDirectory : public VfsDirectory {
+class ReadOnlyVfsDirectory : public VfsDirectory {
+public:
     bool IsWritable() const override;
     bool IsReadable() const override;
     std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) override;

src/core/file_sys/vfs_offset.h

@@ -15,7 +15,8 @@ namespace FileSys {
 // Similar to seeking to an offset.
 // If the file is writable, operations that would write past the end of the offset file will expand
 // the size of this wrapper.
-struct OffsetVfsFile : public VfsFile {
+class OffsetVfsFile : public VfsFile {
+public:
     OffsetVfsFile(std::shared_ptr<VfsFile> file, size_t size, size_t offset = 0,
                   std::string new_name = "", VirtualDir new_parent = nullptr);
 

src/core/file_sys/vfs_real.cpp

@@ -6,7 +6,7 @@
 #include <cstddef>
 #include <iterator>
 #include <utility>
-
+#include "common/assert.h"
 #include "common/common_paths.h"
 #include "common/logging/log.h"
 #include "core/file_sys/vfs_real.h"
@@ -29,6 +29,8 @@ static std::string ModeFlagsToString(Mode mode) {
             mode_str = "a";
         else if (mode & Mode::Write)
             mode_str = "w";
+        else
+            UNREACHABLE_MSG("Invalid file open mode: {:02X}", static_cast<u8>(mode));
     }
 
     mode_str += "b";
@@ -36,8 +38,174 @@ static std::string ModeFlagsToString(Mode mode) {
     return mode_str;
 }
 
-RealVfsFile::RealVfsFile(const std::string& path_, Mode perms_)
-    : backing(path_, ModeFlagsToString(perms_).c_str()), path(path_),
+RealVfsFilesystem::RealVfsFilesystem() : VfsFilesystem(nullptr) {}
+
+std::string RealVfsFilesystem::GetName() const {
+    return "Real";
+}
+
+bool RealVfsFilesystem::IsReadable() const {
+    return true;
+}
+
+bool RealVfsFilesystem::IsWritable() const {
+    return true;
+}
+
+VfsEntryType RealVfsFilesystem::GetEntryType(std::string_view path_) const {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (!FileUtil::Exists(path))
+        return VfsEntryType::None;
+    if (FileUtil::IsDirectory(path))
+        return VfsEntryType::Directory;
+
+    return VfsEntryType::File;
+}
+
+VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (cache.find(path) != cache.end()) {
+        auto weak = cache[path];
+        if (!weak.expired()) {
+            return std::shared_ptr<RealVfsFile>(new RealVfsFile(*this, weak.lock(), path, perms));
+        }
+    }
+
+    if (!FileUtil::Exists(path) && (perms & Mode::WriteAppend) != 0)
+        FileUtil::CreateEmptyFile(path);
+
+    auto backing = std::make_shared<FileUtil::IOFile>(path, ModeFlagsToString(perms).c_str());
+    cache[path] = backing;
+
+    // Cannot use make_shared as RealVfsFile constructor is private
+    return std::shared_ptr<RealVfsFile>(new RealVfsFile(*this, backing, path, perms));
+}
+
+VirtualFile RealVfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (!FileUtil::Exists(path) && !FileUtil::CreateEmptyFile(path))
+        return nullptr;
+    return OpenFile(path, perms);
+}
+
+VirtualFile RealVfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
+    const auto old_path =
+        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto new_path =
+        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+
+    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
+        FileUtil::IsDirectory(old_path) || !FileUtil::Copy(old_path, new_path))
+        return nullptr;
+    return OpenFile(new_path, Mode::ReadWrite);
+}
+
+VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_view new_path_) {
+    const auto old_path =
+        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto new_path =
+        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+
+    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
+        FileUtil::IsDirectory(old_path) || !FileUtil::Rename(old_path, new_path))
+        return nullptr;
+
+    if (cache.find(old_path) != cache.end()) {
+        auto cached = cache[old_path];
+        if (!cached.expired()) {
+            auto file = cached.lock();
+            file->Open(new_path, "r+b");
+            cache.erase(old_path);
+            cache[new_path] = file;
+        }
+    }
+    return OpenFile(new_path, Mode::ReadWrite);
+}
+
+bool RealVfsFilesystem::DeleteFile(std::string_view path_) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (cache.find(path) != cache.end()) {
+        if (!cache[path].expired())
+            cache[path].lock()->Close();
+        cache.erase(path);
+    }
+    return FileUtil::Delete(path);
+}
+
+VirtualDir RealVfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    // Cannot use make_shared as RealVfsDirectory constructor is private
+    return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
+}
+
+VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (!FileUtil::Exists(path) && !FileUtil::CreateDir(path))
+        return nullptr;
+    // Cannot use make_shared as RealVfsDirectory constructor is private
+    return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
+}
+
+VirtualDir RealVfsFilesystem::CopyDirectory(std::string_view old_path_,
+                                            std::string_view new_path_) {
+    const auto old_path =
+        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto new_path =
+        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
+        !FileUtil::IsDirectory(old_path))
+        return nullptr;
+    FileUtil::CopyDir(old_path, new_path);
+    return OpenDirectory(new_path, Mode::ReadWrite);
+}
+
+VirtualDir RealVfsFilesystem::MoveDirectory(std::string_view old_path_,
+                                            std::string_view new_path_) {
+    const auto old_path =
+        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto new_path =
+        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
+        FileUtil::IsDirectory(old_path) || !FileUtil::Rename(old_path, new_path))
+        return nullptr;
+
+    for (auto& kv : cache) {
+        // Path in cache starts with old_path
+        if (kv.first.rfind(old_path, 0) == 0) {
+            const auto file_old_path =
+                FileUtil::SanitizePath(kv.first, FileUtil::DirectorySeparator::PlatformDefault);
+            const auto file_new_path =
+                FileUtil::SanitizePath(new_path + DIR_SEP + kv.first.substr(old_path.size()),
+                                       FileUtil::DirectorySeparator::PlatformDefault);
+            auto cached = cache[file_old_path];
+            if (!cached.expired()) {
+                auto file = cached.lock();
+                file->Open(file_new_path, "r+b");
+                cache.erase(file_old_path);
+                cache[file_new_path] = file;
+            }
+        }
+    }
+
+    return OpenDirectory(new_path, Mode::ReadWrite);
+}
+
+bool RealVfsFilesystem::DeleteDirectory(std::string_view path_) {
+    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    for (auto& kv : cache) {
+        // Path in cache starts with old_path
+        if (kv.first.rfind(path, 0) == 0) {
+            if (!cache[kv.first].expired())
+                cache[kv.first].lock()->Close();
+            cache.erase(kv.first);
+        }
+    }
+    return FileUtil::DeleteDirRecursively(path);
+}
+
+RealVfsFile::RealVfsFile(RealVfsFilesystem& base_, std::shared_ptr<FileUtil::IOFile> backing_,
+                         const std::string& path_, Mode perms_)
+    : base(base_), backing(std::move(backing_)), path(path_),
       parent_path(FileUtil::GetParentPath(path_)),
       path_components(FileUtil::SplitPathComponents(path_)),
       parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
@@ -48,15 +216,15 @@ std::string RealVfsFile::GetName() const {
 }
 
 size_t RealVfsFile::GetSize() const {
-    return backing.GetSize();
+    return backing->GetSize();
 }
 
 bool RealVfsFile::Resize(size_t new_size) {
-    return backing.Resize(new_size);
+    return backing->Resize(new_size);
 }
 
 std::shared_ptr<VfsDirectory> RealVfsFile::GetContainingDirectory() const {
-    return std::make_shared<RealVfsDirectory>(parent_path, perms);
+    return base.OpenDirectory(parent_path, perms);
 }
 
 bool RealVfsFile::IsWritable() const {
@@ -68,62 +236,118 @@ bool RealVfsFile::IsReadable() const {
 }
 
 size_t RealVfsFile::Read(u8* data, size_t length, size_t offset) const {
-    if (!backing.Seek(offset, SEEK_SET))
+    if (!backing->Seek(offset, SEEK_SET))
         return 0;
-    return backing.ReadBytes(data, length);
+    return backing->ReadBytes(data, length);
 }
 
 size_t RealVfsFile::Write(const u8* data, size_t length, size_t offset) {
-    if (!backing.Seek(offset, SEEK_SET))
+    if (!backing->Seek(offset, SEEK_SET))
         return 0;
-    return backing.WriteBytes(data, length);
+    return backing->WriteBytes(data, length);
 }
 
 bool RealVfsFile::Rename(std::string_view name) {
-    std::string name_str(name.begin(), name.end());
-    const auto out = FileUtil::Rename(GetName(), name_str);
+    return base.MoveFile(path, parent_path + DIR_SEP + std::string(name)) != nullptr;
+}
 
-    path = (parent_path + DIR_SEP).append(name);
-    path_components = parent_components;
-    path_components.push_back(std::move(name_str));
-    backing = FileUtil::IOFile(path, ModeFlagsToString(perms).c_str());
+bool RealVfsFile::Close() {
+    return backing->Close();
+}
+
+// TODO(DarkLordZach): MSVC would not let me combine the following two functions using 'if
+// constexpr' because there is a compile error in the branch not used.
+
+template <>
+std::vector<VirtualFile> RealVfsDirectory::IterateEntries<RealVfsFile, VfsFile>() const {
+    if (perms == Mode::Append)
+        return {};
+
+    std::vector<VirtualFile> out;
+    FileUtil::ForeachDirectoryEntry(
+        nullptr, path,
+        [&out, this](u64* entries_out, const std::string& directory, const std::string& filename) {
+            const std::string full_path = directory + DIR_SEP + filename;
+            if (!FileUtil::IsDirectory(full_path))
+                out.emplace_back(base.OpenFile(full_path, perms));
+            return true;
+        });
 
     return out;
 }
 
-bool RealVfsFile::Close() {
-    return backing.Close();
+template <>
+std::vector<VirtualDir> RealVfsDirectory::IterateEntries<RealVfsDirectory, VfsDirectory>() const {
+    if (perms == Mode::Append)
+        return {};
+
+    std::vector<VirtualDir> out;
+    FileUtil::ForeachDirectoryEntry(
+        nullptr, path,
+        [&out, this](u64* entries_out, const std::string& directory, const std::string& filename) {
+            const std::string full_path = directory + DIR_SEP + filename;
+            if (FileUtil::IsDirectory(full_path))
+                out.emplace_back(base.OpenDirectory(full_path, perms));
+            return true;
+        });
+
+    return out;
 }
 
-RealVfsDirectory::RealVfsDirectory(const std::string& path_, Mode perms_)
-    : path(FileUtil::RemoveTrailingSlash(path_)), parent_path(FileUtil::GetParentPath(path)),
+RealVfsDirectory::RealVfsDirectory(RealVfsFilesystem& base_, const std::string& path_, Mode perms_)
+    : base(base_), path(FileUtil::RemoveTrailingSlash(path_)),
+      parent_path(FileUtil::GetParentPath(path)),
       path_components(FileUtil::SplitPathComponents(path)),
       parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
       perms(perms_) {
     if (!FileUtil::Exists(path) && perms & Mode::WriteAppend)
         FileUtil::CreateDir(path);
+}
 
-    if (perms == Mode::Append)
-        return;
+std::shared_ptr<VfsFile> RealVfsDirectory::GetFileRelative(std::string_view path) const {
+    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    if (!FileUtil::Exists(full_path))
+        return nullptr;
+    return base.OpenFile(full_path, perms);
+}
 
-    FileUtil::ForeachDirectoryEntry(
-        nullptr, path,
-        [this](u64* entries_out, const std::string& directory, const std::string& filename) {
-            std::string full_path = directory + DIR_SEP + filename;
-            if (FileUtil::IsDirectory(full_path))
-                subdirectories.emplace_back(std::make_shared<RealVfsDirectory>(full_path, perms));
-            else
-                files.emplace_back(std::make_shared<RealVfsFile>(full_path, perms));
-            return true;
-        });
+std::shared_ptr<VfsDirectory> RealVfsDirectory::GetDirectoryRelative(std::string_view path) const {
+    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    if (!FileUtil::Exists(full_path))
+        return nullptr;
+    return base.OpenDirectory(full_path, perms);
+}
+
+std::shared_ptr<VfsFile> RealVfsDirectory::GetFile(std::string_view name) const {
+    return GetFileRelative(name);
+}
+
+std::shared_ptr<VfsDirectory> RealVfsDirectory::GetSubdirectory(std::string_view name) const {
+    return GetDirectoryRelative(name);
+}
+
+std::shared_ptr<VfsFile> RealVfsDirectory::CreateFileRelative(std::string_view path) {
+    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    return base.CreateFile(full_path, perms);
+}
+
+std::shared_ptr<VfsDirectory> RealVfsDirectory::CreateDirectoryRelative(std::string_view path) {
+    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    auto parent = std::string(FileUtil::GetParentPath(full_path));
+    return base.CreateDirectory(full_path, perms);
+}
+
+bool RealVfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
+    auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(name));
+    return base.DeleteDirectory(full_path);
 }
 
 std::vector<std::shared_ptr<VfsFile>> RealVfsDirectory::GetFiles() const {
-    return files;
+    return IterateEntries<RealVfsFile, VfsFile>();
 }
 
 std::vector<std::shared_ptr<VfsDirectory>> RealVfsDirectory::GetSubdirectories() const {
-    return subdirectories;
+    return IterateEntries<RealVfsDirectory, VfsDirectory>();
 }
 
 bool RealVfsDirectory::IsWritable() const {
@@ -142,57 +366,32 @@ std::shared_ptr<VfsDirectory> RealVfsDirectory::GetParentDirectory() const {
     if (path_components.size() <= 1)
         return nullptr;
 
-    return std::make_shared<RealVfsDirectory>(parent_path, perms);
+    return base.OpenDirectory(parent_path, perms);
 }
 
 std::shared_ptr<VfsDirectory> RealVfsDirectory::CreateSubdirectory(std::string_view name) {
     const std::string subdir_path = (path + DIR_SEP).append(name);
-
-    if (!FileUtil::CreateDir(subdir_path)) {
-        return nullptr;
-    }
-
-    subdirectories.emplace_back(std::make_shared<RealVfsDirectory>(subdir_path, perms));
-    return subdirectories.back();
+    return base.CreateDirectory(subdir_path, perms);
 }
 
 std::shared_ptr<VfsFile> RealVfsDirectory::CreateFile(std::string_view name) {
     const std::string file_path = (path + DIR_SEP).append(name);
-
-    if (!FileUtil::CreateEmptyFile(file_path)) {
-        return nullptr;
-    }
-
-    files.emplace_back(std::make_shared<RealVfsFile>(file_path, perms));
-    return files.back();
+    return base.CreateFile(file_path, perms);
 }
 
 bool RealVfsDirectory::DeleteSubdirectory(std::string_view name) {
     const std::string subdir_path = (path + DIR_SEP).append(name);
-
-    return FileUtil::DeleteDirRecursively(subdir_path);
+    return base.DeleteDirectory(subdir_path);
 }
 
 bool RealVfsDirectory::DeleteFile(std::string_view name) {
-    const auto file = GetFile(name);
-
-    if (file == nullptr) {
-        return false;
-    }
-
-    files.erase(std::find(files.begin(), files.end(), file));
-
-    auto real_file = std::static_pointer_cast<RealVfsFile>(file);
-    real_file->Close();
-
     const std::string file_path = (path + DIR_SEP).append(name);
-    return FileUtil::Delete(file_path);
+    return base.DeleteFile(file_path);
 }
 
 bool RealVfsDirectory::Rename(std::string_view name) {
     const std::string new_name = (parent_path + DIR_SEP).append(name);
-
-    return FileUtil::Rename(path, new_name);
+    return base.MoveFile(path, new_name) != nullptr;
 }
 
 std::string RealVfsDirectory::GetFullPath() const {
@@ -202,16 +401,6 @@ std::string RealVfsDirectory::GetFullPath() const {
 }
 
 bool RealVfsDirectory::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
-    const auto iter = std::find(files.begin(), files.end(), file);
-    if (iter == files.end())
-        return false;
-
-    const std::ptrdiff_t offset = std::distance(files.begin(), iter);
-    files[offset] = files.back();
-    files.pop_back();
-
-    subdirectories.emplace_back(std::move(dir));
-
-    return true;
+    return false;
 }
 } // namespace FileSys

src/core/file_sys/vfs_real.h

@@ -6,18 +6,45 @@
 
 #include <string_view>
 
+#include <boost/container/flat_map.hpp>
 #include "common/file_util.h"
 #include "core/file_sys/mode.h"
 #include "core/file_sys/vfs.h"
 
 namespace FileSys {
 
+class RealVfsFilesystem : public VfsFilesystem {
+public:
+    RealVfsFilesystem();
+
+    std::string GetName() const override;
+    bool IsReadable() const override;
+    bool IsWritable() const override;
+    VfsEntryType GetEntryType(std::string_view path) const override;
+    VirtualFile OpenFile(std::string_view path, Mode perms = Mode::Read) override;
+    VirtualFile CreateFile(std::string_view path, Mode perms = Mode::ReadWrite) override;
+    VirtualFile CopyFile(std::string_view old_path, std::string_view new_path) override;
+    VirtualFile MoveFile(std::string_view old_path, std::string_view new_path) override;
+    bool DeleteFile(std::string_view path) override;
+    VirtualDir OpenDirectory(std::string_view path, Mode perms = Mode::Read) override;
+    VirtualDir CreateDirectory(std::string_view path, Mode perms = Mode::ReadWrite) override;
+    VirtualDir CopyDirectory(std::string_view old_path, std::string_view new_path) override;
+    VirtualDir MoveDirectory(std::string_view old_path, std::string_view new_path) override;
+    bool DeleteDirectory(std::string_view path) override;
+
+private:
+    boost::container::flat_map<std::string, std::weak_ptr<FileUtil::IOFile>> cache;
+};
+
 // An implmentation of VfsFile that represents a file on the user's computer.
-struct RealVfsFile : public VfsFile {
-    friend struct RealVfsDirectory;
+class RealVfsFile : public VfsFile {
+    friend class RealVfsDirectory;
+    friend class RealVfsFilesystem;
 
-    RealVfsFile(const std::string& name, Mode perms = Mode::Read);
+    RealVfsFile(RealVfsFilesystem& base, std::shared_ptr<FileUtil::IOFile> backing,
+                const std::string& path, Mode perms = Mode::Read);
 
+public:
     std::string GetName() const override;
     size_t GetSize() const override;
     bool Resize(size_t new_size) override;
@@ -31,7 +58,8 @@ struct RealVfsFile : public VfsFile {
 private:
     bool Close();
 
-    FileUtil::IOFile backing;
+    RealVfsFilesystem& base;
+    std::shared_ptr<FileUtil::IOFile> backing;
     std::string path;
     std::string parent_path;
     std::vector<std::string> path_components;
@@ -40,9 +68,19 @@ private:
 };
 
 // An implementation of VfsDirectory that represents a directory on the user's computer.
-struct RealVfsDirectory : public VfsDirectory {
-    RealVfsDirectory(const std::string& path, Mode perms = Mode::Read);
+class RealVfsDirectory : public VfsDirectory {
+    friend class RealVfsFilesystem;
 
+    RealVfsDirectory(RealVfsFilesystem& base, const std::string& path, Mode perms = Mode::Read);
+
+public:
+    std::shared_ptr<VfsFile> GetFileRelative(std::string_view path) const override;
+    std::shared_ptr<VfsDirectory> GetDirectoryRelative(std::string_view path) const override;
+    std::shared_ptr<VfsFile> GetFile(std::string_view name) const override;
+    std::shared_ptr<VfsDirectory> GetSubdirectory(std::string_view name) const override;
+    std::shared_ptr<VfsFile> CreateFileRelative(std::string_view path) override;
+    std::shared_ptr<VfsDirectory> CreateDirectoryRelative(std::string_view path) override;
+    bool DeleteSubdirectoryRecursive(std::string_view name) override;
     std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
     std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
     bool IsWritable() const override;
@@ -60,13 +98,15 @@ protected:
     bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
 
 private:
+    template <typename T, typename R>
+    std::vector<std::shared_ptr<R>> IterateEntries() const;
+
+    RealVfsFilesystem& base;
     std::string path;
     std::string parent_path;
     std::vector<std::string> path_components;
     std::vector<std::string> parent_components;
     Mode perms;
-    std::vector<std::shared_ptr<VfsFile>> files;
-    std::vector<std::shared_ptr<VfsDirectory>> subdirectories;
 };
 
 } // namespace FileSys

src/core/file_sys/vfs_vector.h

@@ -10,7 +10,8 @@ namespace FileSys {
 
 // An implementation of VfsDirectory that maintains two vectors for subdirectories and files.
 // Vector data is supplied upon construction.
-struct VectorVfsDirectory : public VfsDirectory {
+class VectorVfsDirectory : public VfsDirectory {
+public:
     explicit VectorVfsDirectory(std::vector<VirtualFile> files = {},
                                 std::vector<VirtualDir> dirs = {}, VirtualDir parent = nullptr,
                                 std::string name = "");

src/core/frontend/emu_window.cpp

@@ -8,6 +8,8 @@
 #include "core/frontend/input.h"
 #include "core/settings.h"
 
+namespace Core::Frontend {
+
 class EmuWindow::TouchState : public Input::Factory<Input::TouchDevice>,
                               public std::enable_shared_from_this<TouchState> {
 public:
@@ -108,3 +110,5 @@ void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y) {
 void EmuWindow::UpdateCurrentFramebufferLayout(unsigned width, unsigned height) {
     NotifyFramebufferLayoutChanged(Layout::DefaultFrameLayout(width, height));
 }
+
+} // namespace Core::Frontend

src/core/frontend/emu_window.h

@@ -10,6 +10,8 @@
 #include "common/common_types.h"
 #include "core/frontend/framebuffer_layout.h"
 
+namespace Core::Frontend {
+
 /**
  * Abstraction class used to provide an interface between emulation code and the frontend
  * (e.g. SDL, QGLWidget, GLFW, etc...).
@@ -166,3 +168,5 @@ private:
      */
     std::tuple<unsigned, unsigned> ClipToTouchScreen(unsigned new_x, unsigned new_y);
 };
+
+} // namespace Core::Frontend

src/core/hle/kernel/hle_ipc.cpp

@@ -201,7 +201,7 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(u32_le* src_cmdb
     return RESULT_SUCCESS;
 }
 
-ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(Thread& thread) {
+ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(const Thread& thread) {
     std::array<u32, IPC::COMMAND_BUFFER_LENGTH> dst_cmdbuf;
     Memory::ReadBlock(*thread.owner_process, thread.GetTLSAddress(), dst_cmdbuf.data(),
                       dst_cmdbuf.size() * sizeof(u32));

src/core/hle/kernel/hle_ipc.h

@@ -132,7 +132,7 @@ public:
     ResultCode PopulateFromIncomingCommandBuffer(u32_le* src_cmdbuf, Process& src_process,
                                                  HandleTable& src_table);
     /// Writes data from this context back to the requesting process/thread.
-    ResultCode WriteToOutgoingCommandBuffer(Thread& thread);
+    ResultCode WriteToOutgoingCommandBuffer(const Thread& thread);
 
     u32_le GetCommand() const {
         return command;

src/core/hle/kernel/kernel.cpp

@@ -11,7 +11,7 @@
 
 namespace Kernel {
 
-unsigned int Object::next_object_id;
+std::atomic<u32> Object::next_object_id{0};
 
 /// Initialize the kernel
 void Init() {

src/core/hle/kernel/object.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <atomic>
 #include <string>
 #include <utility>
 
@@ -42,8 +43,8 @@ public:
     virtual ~Object();
 
     /// Returns a unique identifier for the object. For debugging purposes only.
-    unsigned int GetObjectId() const {
-        return object_id;
+    u32 GetObjectId() const {
+        return object_id.load(std::memory_order_relaxed);
     }
 
     virtual std::string GetTypeName() const {
@@ -61,23 +62,23 @@ public:
     bool IsWaitable() const;
 
 public:
-    static unsigned int next_object_id;
+    static std::atomic<u32> next_object_id;
 
 private:
     friend void intrusive_ptr_add_ref(Object*);
     friend void intrusive_ptr_release(Object*);
 
-    unsigned int ref_count = 0;
-    unsigned int object_id = next_object_id++;
+    std::atomic<u32> ref_count{0};
+    std::atomic<u32> object_id{next_object_id++};
 };
 
 // Special functions used by boost::instrusive_ptr to do automatic ref-counting
 inline void intrusive_ptr_add_ref(Object* object) {
-    ++object->ref_count;
+    object->ref_count.fetch_add(1, std::memory_order_relaxed);
 }
 
 inline void intrusive_ptr_release(Object* object) {
-    if (--object->ref_count == 0) {
+    if (object->ref_count.fetch_sub(1, std::memory_order_acq_rel) == 1) {
         delete object;
     }
 }

src/core/hle/kernel/scheduler.cpp

@@ -25,7 +25,7 @@ Scheduler::~Scheduler() {
     }
 }
 
-bool Scheduler::HaveReadyThreads() {
+bool Scheduler::HaveReadyThreads() const {
     std::lock_guard<std::mutex> lock(scheduler_mutex);
     return ready_queue.get_first() != nullptr;
 }

src/core/hle/kernel/scheduler.h

@@ -21,7 +21,7 @@ public:
     ~Scheduler();
 
     /// Returns whether there are any threads that are ready to run.
-    bool HaveReadyThreads();
+    bool HaveReadyThreads() const;
 
     /// Reschedules to the next available thread (call after current thread is suspended)
     void Reschedule();

src/core/hle/kernel/server_session.cpp

@@ -71,6 +71,14 @@ ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& con
         const u32 object_id{context.GetDomainMessageHeader()->object_id};
         switch (domain_message_header->command) {
         case IPC::DomainMessageHeader::CommandType::SendMessage:
+            if (object_id > domain_request_handlers.size()) {
+                LOG_CRITICAL(IPC,
+                             "object_id {} is too big! This probably means a recent service call "
+                             "to {} needed to return a new interface!",
+                             object_id, name);
+                UNREACHABLE();
+                return RESULT_SUCCESS; // Ignore error if asserts are off
+            }
             return domain_request_handlers[object_id - 1]->HandleSyncRequest(context);
 
         case IPC::DomainMessageHeader::CommandType::CloseVirtualHandle: {

src/core/hle/kernel/svc.cpp

@@ -532,7 +532,6 @@ static ResultCode CreateThread(Handle* out_handle, VAddr entry_point, u64 arg, V
     CASCADE_RESULT(thread->guest_handle, g_handle_table.Create(thread));
     *out_handle = thread->guest_handle;
 
-    Core::System::GetInstance().PrepareReschedule();
     Core::System::GetInstance().CpuCore(thread->processor_id).PrepareReschedule();
 
     LOG_TRACE(Kernel_SVC,
@@ -706,8 +705,7 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target
             Handle owner_handle = static_cast<Handle>(mutex_val & Mutex::MutexOwnerMask);
             auto owner = g_handle_table.Get<Thread>(owner_handle);
             ASSERT(owner);
-            ASSERT(thread->status != ThreadStatus::Running);
-            thread->status = ThreadStatus::WaitMutex;
+            ASSERT(thread->status == ThreadStatus::WaitMutex);
             thread->wakeup_callback = nullptr;
 
             owner->AddMutexWaiter(thread);

src/core/hle/kernel/thread.cpp

@@ -23,6 +23,7 @@
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/thread.h"
+#include "core/hle/lock.h"
 #include "core/hle/result.h"
 #include "core/memory.h"
 
@@ -104,6 +105,10 @@ void ExitCurrentThread() {
  */
 static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
     const auto proper_handle = static_cast<Handle>(thread_handle);
+
+    // Lock the global kernel mutex when we enter the kernel HLE.
+    std::lock_guard<std::recursive_mutex> lock(HLE::g_hle_lock);
+
     SharedPtr<Thread> thread = wakeup_callback_handle_table.Get<Thread>(proper_handle);
     if (thread == nullptr) {
         LOG_CRITICAL(Kernel, "Callback fired for invalid thread {:08X}", proper_handle);
@@ -155,8 +160,10 @@ void Thread::WakeAfterDelay(s64 nanoseconds) {
     if (nanoseconds == -1)
         return;
 
-    CoreTiming::ScheduleEvent(CoreTiming::nsToCycles(nanoseconds), ThreadWakeupEventType,
-                              callback_handle);
+    // This function might be called from any thread so we have to be cautious and use the
+    // thread-safe version of ScheduleEvent.
+    CoreTiming::ScheduleEventThreadsafe(CoreTiming::nsToCycles(nanoseconds), ThreadWakeupEventType,
+                                        callback_handle);
 }
 
 void Thread::CancelWakeupTimer() {
@@ -419,12 +426,33 @@ VAddr Thread::GetCommandBufferAddress() const {
 }
 
 void Thread::AddMutexWaiter(SharedPtr<Thread> thread) {
+    if (thread->lock_owner == this) {
+        // If the thread is already waiting for this thread to release the mutex, ensure that the
+        // waiters list is consistent and return without doing anything.
+        auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+        ASSERT(itr != wait_mutex_threads.end());
+        return;
+    }
+
+    // A thread can't wait on two different mutexes at the same time.
+    ASSERT(thread->lock_owner == nullptr);
+
+    // Ensure that the thread is not already in the list of mutex waiters
+    auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+    ASSERT(itr == wait_mutex_threads.end());
+
     thread->lock_owner = this;
     wait_mutex_threads.emplace_back(std::move(thread));
     UpdatePriority();
 }
 
 void Thread::RemoveMutexWaiter(SharedPtr<Thread> thread) {
+    ASSERT(thread->lock_owner == this);
+
+    // Ensure that the thread is in the list of mutex waiters
+    auto itr = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread);
+    ASSERT(itr != wait_mutex_threads.end());
+
     boost::remove_erase(wait_mutex_threads, thread);
     thread->lock_owner = nullptr;
     UpdatePriority();

src/core/hle/service/audio/audren_u.cpp

@@ -20,9 +20,9 @@ public:
     explicit IAudioRenderer(AudioCore::AudioRendererParameter audren_params)
         : ServiceFramework("IAudioRenderer") {
         static const FunctionInfo functions[] = {
-            {0, nullptr, "GetAudioRendererSampleRate"},
-            {1, nullptr, "GetAudioRendererSampleCount"},
-            {2, nullptr, "GetAudioRendererMixBufferCount"},
+            {0, &IAudioRenderer::GetAudioRendererSampleRate, "GetAudioRendererSampleRate"},
+            {1, &IAudioRenderer::GetAudioRendererSampleCount, "GetAudioRendererSampleCount"},
+            {2, &IAudioRenderer::GetAudioRendererMixBufferCount, "GetAudioRendererMixBufferCount"},
             {3, nullptr, "GetAudioRendererState"},
             {4, &IAudioRenderer::RequestUpdateAudioRenderer, "RequestUpdateAudioRenderer"},
             {5, &IAudioRenderer::StartAudioRenderer, "StartAudioRenderer"},
@@ -45,6 +45,27 @@ private:
         system_event->Signal();
     }
 
+    void GetAudioRendererSampleRate(Kernel::HLERequestContext& ctx) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetSampleRate());
+        LOG_DEBUG(Service_Audio, "called");
+    }
+
+    void GetAudioRendererSampleCount(Kernel::HLERequestContext& ctx) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetSampleCount());
+        LOG_DEBUG(Service_Audio, "called");
+    }
+
+    void GetAudioRendererMixBufferCount(Kernel::HLERequestContext& ctx) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetMixBufferCount());
+        LOG_DEBUG(Service_Audio, "called");
+    }
+
     void RequestUpdateAudioRenderer(Kernel::HLERequestContext& ctx) {
         ctx.WriteBuffer(renderer->UpdateAudioRenderer(ctx.ReadBuffer()));
         IPC::ResponseBuilder rb{ctx, 2};
@@ -169,7 +190,8 @@ AudRenU::AudRenU() : ServiceFramework("audren:u") {
         {1, &AudRenU::GetAudioRendererWorkBufferSize, "GetAudioRendererWorkBufferSize"},
         {2, &AudRenU::GetAudioDevice, "GetAudioDevice"},
         {3, nullptr, "OpenAudioRendererAuto"},
-        {4, nullptr, "GetAudioDeviceServiceWithRevisionInfo"},
+        {4, &AudRenU::GetAudioDeviceServiceWithRevisionInfo,
+         "GetAudioDeviceServiceWithRevisionInfo"},
     };
     RegisterHandlers(functions);
 }
@@ -189,7 +211,7 @@ void AudRenU::GetAudioRendererWorkBufferSize(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     auto params = rp.PopRaw<AudioCore::AudioRendererParameter>();
 
-    u64 buffer_sz = Common::AlignUp(4 * params.unknown_8, 0x40);
+    u64 buffer_sz = Common::AlignUp(4 * params.mix_buffer_count, 0x40);
     buffer_sz += params.unknown_c * 1024;
     buffer_sz += 0x940 * (params.unknown_c + 1);
     buffer_sz += 0x3F0 * params.voice_count;
@@ -197,7 +219,7 @@ void AudRenU::GetAudioRendererWorkBufferSize(Kernel::HLERequestContext& ctx) {
     buffer_sz += Common::AlignUp(8 * params.voice_count, 0x10);
     buffer_sz +=
         Common::AlignUp((0x3C0 * (params.sink_count + params.unknown_c) + 4 * params.sample_count) *
-                            (params.unknown_8 + 6),
+                            (params.mix_buffer_count + 6),
                         0x40);
 
     if (IsFeatureSupported(AudioFeatures::Splitter, params.revision)) {
@@ -253,6 +275,16 @@ void AudRenU::GetAudioDevice(Kernel::HLERequestContext& ctx) {
     LOG_DEBUG(Service_Audio, "called");
 }
 
+void AudRenU::GetAudioDeviceServiceWithRevisionInfo(Kernel::HLERequestContext& ctx) {
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<Audio::IAudioDevice>();
+
+    LOG_WARNING(Service_Audio, "(STUBBED) called"); // TODO(ogniK): Figure out what is different
+                                                    // based on the current revision
+}
+
 bool AudRenU::IsFeatureSupported(AudioFeatures feature, u32_le revision) const {
     u32_be version_num = (revision - Common::MakeMagic('R', 'E', 'V', '0')); // Byte swap
     switch (feature) {

src/core/hle/service/audio/audren_u.h

@@ -22,6 +22,7 @@ private:
     void OpenAudioRenderer(Kernel::HLERequestContext& ctx);
     void GetAudioRendererWorkBufferSize(Kernel::HLERequestContext& ctx);
     void GetAudioDevice(Kernel::HLERequestContext& ctx);
+    void GetAudioDeviceServiceWithRevisionInfo(Kernel::HLERequestContext& ctx);
 
     enum class AudioFeatures : u32 {
         Splitter,

src/core/hle/service/filesystem/filesystem.cpp

@@ -59,7 +59,7 @@ ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path_, u64
 ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path_) const {
     std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
-    if (path == "/" || path == "\\") {
+    if (path.empty()) {
         // TODO(DarkLordZach): Why do games call this and what should it do? Works as is but...
         return RESULT_SUCCESS;
     }
@@ -281,15 +281,15 @@ ResultVal<FileSys::VirtualDir> OpenSDMC() {
     return sdmc_factory->Open();
 }
 
-void RegisterFileSystems() {
+void RegisterFileSystems(const FileSys::VirtualFilesystem& vfs) {
     romfs_factory = nullptr;
     save_data_factory = nullptr;
     sdmc_factory = nullptr;
 
-    auto nand_directory = std::make_shared<FileSys::RealVfsDirectory>(
-        FileUtil::GetUserPath(FileUtil::UserPath::NANDDir), FileSys::Mode::ReadWrite);
-    auto sd_directory = std::make_shared<FileSys::RealVfsDirectory>(
-        FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir), FileSys::Mode::ReadWrite);
+    auto nand_directory = vfs->OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir),
+                                             FileSys::Mode::ReadWrite);
+    auto sd_directory = vfs->OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir),
+                                           FileSys::Mode::ReadWrite);
 
     auto savedata = std::make_unique<FileSys::SaveDataFactory>(std::move(nand_directory));
     save_data_factory = std::move(savedata);
@@ -298,8 +298,8 @@ void RegisterFileSystems() {
     sdmc_factory = std::move(sdcard);
 }
 
-void InstallInterfaces(SM::ServiceManager& service_manager) {
-    RegisterFileSystems();
+void InstallInterfaces(SM::ServiceManager& service_manager, const FileSys::VirtualFilesystem& vfs) {
+    RegisterFileSystems(vfs);
     std::make_shared<FSP_LDR>()->InstallAsService(service_manager);
     std::make_shared<FSP_PR>()->InstallAsService(service_manager);
     std::make_shared<FSP_SRV>()->InstallAsService(service_manager);

src/core/hle/service/filesystem/filesystem.h

@@ -36,7 +36,7 @@ ResultVal<FileSys::VirtualDir> OpenSDMC();
 // ResultVal<std::unique_ptr<FileSys::FileSystemBackend>> OpenBIS();
 
 /// Registers all Filesystem services with the specified service manager.
-void InstallInterfaces(SM::ServiceManager& service_manager);
+void InstallInterfaces(SM::ServiceManager& service_manager, const FileSys::VirtualFilesystem& vfs);
 
 // A class that wraps a VfsDirectory with methods that return ResultVal and ResultCode instead of
 // pointers and booleans. This makes using a VfsDirectory with switch services much easier and

src/core/hle/service/filesystem/fsp_srv.cpp

@@ -193,13 +193,10 @@ private:
 template <typename T>
 static void BuildEntryIndex(std::vector<FileSys::Entry>& entries, const std::vector<T>& new_data,
                             FileSys::EntryType type) {
+    entries.reserve(entries.size() + new_data.size());
+
     for (const auto& new_entry : new_data) {
-        FileSys::Entry entry;
-        entry.filename[0] = '\0';
-        std::strncat(entry.filename, new_entry->GetName().c_str(), FileSys::FILENAME_LENGTH - 1);
-        entry.type = type;
-        entry.file_size = new_entry->GetSize();
-        entries.emplace_back(std::move(entry));
+        entries.emplace_back(new_entry->GetName(), type, new_entry->GetSize());
     }
 }
 

src/core/hle/service/friend/friend.cpp

@@ -9,10 +9,110 @@
 
 namespace Service::Friend {
 
+class IFriendService final : public ServiceFramework<IFriendService> {
+public:
+    IFriendService() : ServiceFramework("IFriendService") {
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetCompletionEvent"},
+            {1, nullptr, "Cancel"},
+            {10100, nullptr, "GetFriendListIds"},
+            {10101, nullptr, "GetFriendList"},
+            {10102, nullptr, "UpdateFriendInfo"},
+            {10110, nullptr, "GetFriendProfileImage"},
+            {10200, nullptr, "SendFriendRequestForApplication"},
+            {10211, nullptr, "AddFacedFriendRequestForApplication"},
+            {10400, nullptr, "GetBlockedUserListIds"},
+            {10500, nullptr, "GetProfileList"},
+            {10600, nullptr, "DeclareOpenOnlinePlaySession"},
+            {10601, &IFriendService::DeclareCloseOnlinePlaySession,
+             "DeclareCloseOnlinePlaySession"},
+            {10610, &IFriendService::UpdateUserPresence, "UpdateUserPresence"},
+            {10700, nullptr, "GetPlayHistoryRegistrationKey"},
+            {10701, nullptr, "GetPlayHistoryRegistrationKeyWithNetworkServiceAccountId"},
+            {10702, nullptr, "AddPlayHistory"},
+            {11000, nullptr, "GetProfileImageUrl"},
+            {20100, nullptr, "GetFriendCount"},
+            {20101, nullptr, "GetNewlyFriendCount"},
+            {20102, nullptr, "GetFriendDetailedInfo"},
+            {20103, nullptr, "SyncFriendList"},
+            {20104, nullptr, "RequestSyncFriendList"},
+            {20110, nullptr, "LoadFriendSetting"},
+            {20200, nullptr, "GetReceivedFriendRequestCount"},
+            {20201, nullptr, "GetFriendRequestList"},
+            {20300, nullptr, "GetFriendCandidateList"},
+            {20301, nullptr, "GetNintendoNetworkIdInfo"},
+            {20302, nullptr, "GetSnsAccountLinkage"},
+            {20303, nullptr, "GetSnsAccountProfile"},
+            {20304, nullptr, "GetSnsAccountFriendList"},
+            {20400, nullptr, "GetBlockedUserList"},
+            {20401, nullptr, "SyncBlockedUserList"},
+            {20500, nullptr, "GetProfileExtraList"},
+            {20501, nullptr, "GetRelationship"},
+            {20600, nullptr, "GetUserPresenceView"},
+            {20700, nullptr, "GetPlayHistoryList"},
+            {20701, nullptr, "GetPlayHistoryStatistics"},
+            {20800, nullptr, "LoadUserSetting"},
+            {20801, nullptr, "SyncUserSetting"},
+            {20900, nullptr, "RequestListSummaryOverlayNotification"},
+            {21000, nullptr, "GetExternalApplicationCatalog"},
+            {30100, nullptr, "DropFriendNewlyFlags"},
+            {30101, nullptr, "DeleteFriend"},
+            {30110, nullptr, "DropFriendNewlyFlag"},
+            {30120, nullptr, "ChangeFriendFavoriteFlag"},
+            {30121, nullptr, "ChangeFriendOnlineNotificationFlag"},
+            {30200, nullptr, "SendFriendRequest"},
+            {30201, nullptr, "SendFriendRequestWithApplicationInfo"},
+            {30202, nullptr, "CancelFriendRequest"},
+            {30203, nullptr, "AcceptFriendRequest"},
+            {30204, nullptr, "RejectFriendRequest"},
+            {30205, nullptr, "ReadFriendRequest"},
+            {30210, nullptr, "GetFacedFriendRequestRegistrationKey"},
+            {30211, nullptr, "AddFacedFriendRequest"},
+            {30212, nullptr, "CancelFacedFriendRequest"},
+            {30213, nullptr, "GetFacedFriendRequestProfileImage"},
+            {30214, nullptr, "GetFacedFriendRequestProfileImageFromPath"},
+            {30215, nullptr, "SendFriendRequestWithExternalApplicationCatalogId"},
+            {30216, nullptr, "ResendFacedFriendRequest"},
+            {30217, nullptr, "SendFriendRequestWithNintendoNetworkIdInfo"},
+            {30300, nullptr, "GetSnsAccountLinkPageUrl"},
+            {30301, nullptr, "UnlinkSnsAccount"},
+            {30400, nullptr, "BlockUser"},
+            {30401, nullptr, "BlockUserWithApplicationInfo"},
+            {30402, nullptr, "UnblockUser"},
+            {30500, nullptr, "GetProfileExtraFromFriendCode"},
+            {30700, nullptr, "DeletePlayHistory"},
+            {30810, nullptr, "ChangePresencePermission"},
+            {30811, nullptr, "ChangeFriendRequestReception"},
+            {30812, nullptr, "ChangePlayLogPermission"},
+            {30820, nullptr, "IssueFriendCode"},
+            {30830, nullptr, "ClearPlayLog"},
+            {49900, nullptr, "DeleteNetworkServiceAccountCache"},
+        };
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void DeclareCloseOnlinePlaySession(Kernel::HLERequestContext& ctx) {
+        // Stub used by Splatoon 2
+        LOG_WARNING(Service_ACC, "(STUBBED) called");
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void UpdateUserPresence(Kernel::HLERequestContext& ctx) {
+        // Stub used by Retro City Rampage
+        LOG_WARNING(Service_ACC, "(STUBBED) called");
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+};
+
 void Module::Interface::CreateFriendService(Kernel::HLERequestContext& ctx) {
-    IPC::ResponseBuilder rb{ctx, 2};
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(RESULT_SUCCESS);
-    LOG_WARNING(Service_Friend, "(STUBBED) called");
+    rb.PushIpcInterface<IFriendService>();
+    LOG_DEBUG(Service_ACC, "called");
 }
 
 Module::Interface::Interface(std::shared_ptr<Module> module, const char* name)

src/core/hle/service/hid/hid.cpp

@@ -291,6 +291,7 @@ private:
 class Hid final : public ServiceFramework<Hid> {
 public:
     Hid() : ServiceFramework("hid") {
+        // clang-format off
         static const FunctionInfo functions[] = {
             {0, &Hid::CreateAppletResource, "CreateAppletResource"},
             {1, &Hid::ActivateDebugPad, "ActivateDebugPad"},
@@ -333,15 +334,13 @@ public:
             {102, &Hid::SetSupportedNpadIdType, "SetSupportedNpadIdType"},
             {103, &Hid::ActivateNpad, "ActivateNpad"},
             {104, nullptr, "DeactivateNpad"},
-            {106, &Hid::AcquireNpadStyleSetUpdateEventHandle,
-             "AcquireNpadStyleSetUpdateEventHandle"},
-            {107, nullptr, "DisconnectNpad"},
+            {106, &Hid::AcquireNpadStyleSetUpdateEventHandle, "AcquireNpadStyleSetUpdateEventHandle"},
+            {107, &Hid::DisconnectNpad, "DisconnectNpad"},
             {108, &Hid::GetPlayerLedPattern, "GetPlayerLedPattern"},
             {109, nullptr, "ActivateNpadWithRevision"},
             {120, &Hid::SetNpadJoyHoldType, "SetNpadJoyHoldType"},
             {121, &Hid::GetNpadJoyHoldType, "GetNpadJoyHoldType"},
-            {122, &Hid::SetNpadJoyAssignmentModeSingleByDefault,
-             "SetNpadJoyAssignmentModeSingleByDefault"},
+            {122, &Hid::SetNpadJoyAssignmentModeSingleByDefault, "SetNpadJoyAssignmentModeSingleByDefault"},
             {123, nullptr, "SetNpadJoyAssignmentModeSingleByDefault"},
             {124, &Hid::SetNpadJoyAssignmentModeDual, "SetNpadJoyAssignmentModeDual"},
             {125, &Hid::MergeSingleJoyAsDualJoy, "MergeSingleJoyAsDualJoy"},
@@ -398,6 +397,8 @@ public:
             {1000, nullptr, "SetNpadCommunicationMode"},
             {1001, nullptr, "GetNpadCommunicationMode"},
         };
+        // clang-format on
+
         RegisterHandlers(functions);
 
         event = Kernel::Event::Create(Kernel::ResetType::OneShot, "hid:EventHandle");
@@ -496,6 +497,12 @@ private:
         LOG_WARNING(Service_HID, "(STUBBED) called");
     }
 
+    void DisconnectNpad(Kernel::HLERequestContext& ctx) {
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+        LOG_WARNING(Service_HID, "(STUBBED) called");
+    }
+
     void GetPlayerLedPattern(Kernel::HLERequestContext& ctx) {
         IPC::ResponseBuilder rb{ctx, 2};
         rb.Push(RESULT_SUCCESS);

src/core/hle/service/nvflinger/buffer_queue.cpp

@@ -16,7 +16,7 @@ BufferQueue::BufferQueue(u32 id, u64 layer_id) : id(id), layer_id(layer_id) {
         Kernel::Event::Create(Kernel::ResetType::Sticky, "BufferQueue NativeHandle");
 }
 
-void BufferQueue::SetPreallocatedBuffer(u32 slot, IGBPBuffer& igbp_buffer) {
+void BufferQueue::SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer) {
     Buffer buffer{};
     buffer.slot = slot;
     buffer.igbp_buffer = igbp_buffer;

src/core/hle/service/nvflinger/buffer_queue.h

@@ -6,6 +6,7 @@
 
 #include <vector>
 #include <boost/optional.hpp>
+#include "common/common_funcs.h"
 #include "common/math_util.h"
 #include "common/swap.h"
 #include "core/hle/kernel/event.h"
@@ -72,7 +73,7 @@ public:
         MathUtil::Rectangle<int> crop_rect;
     };
 
-    void SetPreallocatedBuffer(u32 slot, IGBPBuffer& buffer);
+    void SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer);
     boost::optional<u32> DequeueBuffer(u32 width, u32 height);
     const IGBPBuffer& RequestBuffer(u32 slot) const;
     void QueueBuffer(u32 slot, BufferTransformFlags transform,

src/core/hle/service/service.cpp

@@ -198,7 +198,7 @@ void AddNamedPort(std::string name, SharedPtr<ClientPort> port) {
 }
 
 /// Initialize ServiceManager
-void Init(std::shared_ptr<SM::ServiceManager>& sm) {
+void Init(std::shared_ptr<SM::ServiceManager>& sm, const FileSys::VirtualFilesystem& rfs) {
     // NVFlinger needs to be accessed by several services like Vi and AppletOE so we instantiate it
     // here and pass it into the respective InstallInterfaces functions.
     auto nv_flinger = std::make_shared<NVFlinger::NVFlinger>();
@@ -221,7 +221,7 @@ void Init(std::shared_ptr<SM::ServiceManager>& sm) {
     EUPLD::InstallInterfaces(*sm);
     Fatal::InstallInterfaces(*sm);
     FGM::InstallInterfaces(*sm);
-    FileSystem::InstallInterfaces(*sm);
+    FileSystem::InstallInterfaces(*sm, rfs);
     Friend::InstallInterfaces(*sm);
     GRC::InstallInterfaces(*sm);
     HID::InstallInterfaces(*sm);

src/core/hle/service/service.h

@@ -22,6 +22,10 @@ class ServerSession;
 class HLERequestContext;
 } // namespace Kernel
 
+namespace FileSys {
+class VfsFilesystem;
+}
+
 namespace Service {
 
 namespace SM {
@@ -177,7 +181,8 @@ private:
 };
 
 /// Initialize ServiceManager
-void Init(std::shared_ptr<SM::ServiceManager>& sm);
+void Init(std::shared_ptr<SM::ServiceManager>& sm,
+          const std::shared_ptr<FileSys::VfsFilesystem>& vfs);
 
 /// Shutdown ServiceManager
 void Shutdown();

src/core/loader/deconstructed_rom_directory.cpp

@@ -83,13 +83,13 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
 
     if (dir == nullptr) {
         if (file == nullptr)
-            return ResultStatus::ErrorInvalidFormat;
+            return ResultStatus::ErrorNullFile;
         dir = file->GetContainingDirectory();
     }
 
     const FileSys::VirtualFile npdm = dir->GetFile("main.npdm");
     if (npdm == nullptr)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorMissingNPDM;
 
     ResultStatus result = metadata.Load(npdm);
     if (result != ResultStatus::Success) {
@@ -99,7 +99,7 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
 
     const FileSys::ProgramAddressSpaceType arch_bits{metadata.GetAddressSpaceType()};
     if (arch_bits == FileSys::ProgramAddressSpaceType::Is32Bit) {
-        return ResultStatus::ErrorUnsupportedArch;
+        return ResultStatus::Error32BitISA;
     }
 
     // Load NSO modules
@@ -143,28 +143,28 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
 
 ResultStatus AppLoader_DeconstructedRomDirectory::ReadRomFS(FileSys::VirtualFile& dir) {
     if (romfs == nullptr)
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoRomFS;
     dir = romfs;
     return ResultStatus::Success;
 }
 
 ResultStatus AppLoader_DeconstructedRomDirectory::ReadIcon(std::vector<u8>& buffer) {
     if (icon_data.empty())
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoIcon;
     buffer = icon_data;
     return ResultStatus::Success;
 }
 
 ResultStatus AppLoader_DeconstructedRomDirectory::ReadProgramId(u64& out_program_id) {
     if (name.empty())
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoControl;
     out_program_id = title_id;
     return ResultStatus::Success;
 }
 
 ResultStatus AppLoader_DeconstructedRomDirectory::ReadTitle(std::string& title) {
     if (name.empty())
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoControl;
     title = name;
     return ResultStatus::Success;
 }

src/core/loader/elf.cpp

@@ -390,7 +390,7 @@ ResultStatus AppLoader_ELF::Load(Kernel::SharedPtr<Kernel::Process>& process) {
 
     std::vector<u8> buffer = file->ReadAllBytes();
     if (buffer.size() != file->GetSize())
-        return ResultStatus::Error;
+        return ResultStatus::ErrorIncorrectELFFileSize;
 
     ElfReader elf_reader(&buffer[0]);
     SharedPtr<CodeSet> codeset = elf_reader.LoadInto(Memory::PROCESS_IMAGE_VADDR);

src/core/loader/loader.cpp

@@ -43,10 +43,6 @@ FileType IdentifyFile(FileSys::VirtualFile file) {
     return FileType::Unknown;
 }
 
-FileType IdentifyFile(const std::string& file_name) {
-    return IdentifyFile(std::make_shared<FileSys::RealVfsFile>(file_name));
-}
-
 FileType GuessFromFilename(const std::string& name) {
     if (name == "main")
         return FileType::DeconstructedRomDirectory;
@@ -90,6 +86,55 @@ std::string GetFileTypeString(FileType type) {
     return "unknown";
 }
 
+constexpr std::array<const char*, 36> RESULT_MESSAGES{
+    "The operation completed successfully.",
+    "The loader requested to load is already loaded.",
+    "The operation is not implemented.",
+    "The loader is not initialized properly.",
+    "The NPDM file has a bad header.",
+    "The NPDM has a bad ACID header.",
+    "The NPDM has a bad ACI header,",
+    "The NPDM file has a bad file access control.",
+    "The NPDM has a bad file access header.",
+    "The PFS/HFS partition has a bad header.",
+    "The PFS/HFS partition has incorrect size as determined by the header.",
+    "The NCA file has a bad header.",
+    "The general keyfile could not be found.",
+    "The NCA Header key could not be found.",
+    "The NCA Header key is incorrect or the header is invalid.",
+    "Support for NCA2-type NCAs is not implemented.",
+    "Support for NCA0-type NCAs is not implemented.",
+    "The titlekey for this Rights ID could not be found.",
+    "The titlekek for this crypto revision could not be found.",
+    "The Rights ID in the header is invalid.",
+    "The key area key for this application type and crypto revision could not be found.",
+    "The key area key is incorrect or the section header is invalid.",
+    "The titlekey and/or titlekek is incorrect or the section header is invalid.",
+    "The XCI file is missing a Program-type NCA.",
+    "The NCA file is not an application.",
+    "The ExeFS partition could not be found.",
+    "The XCI file has a bad header.",
+    "The XCI file is missing a partition.",
+    "The file could not be found or does not exist.",
+    "The game is missing a program metadata file (main.npdm).",
+    "The game uses the currently-unimplemented 32-bit architecture.",
+    "The RomFS could not be found.",
+    "The ELF file has incorrect size as determined by the header.",
+    "There was a general error loading the NRO into emulated memory.",
+    "There is no icon available.",
+    "There is no control data available.",
+};
+
+std::string GetMessageForResultStatus(ResultStatus status) {
+    return GetMessageForResultStatus(static_cast<u16>(status));
+}
+
+std::string GetMessageForResultStatus(u16 status) {
+    if (status >= 36)
+        return "";
+    return RESULT_MESSAGES[status];
+}
+
 /**
  * Get a loader for a file with a specific type
  * @param file The file to load

src/core/loader/loader.h

@@ -42,14 +42,6 @@ enum class FileType {
  */
 FileType IdentifyFile(FileSys::VirtualFile file);
 
-/**
- * Identifies the type of a bootable file based on the magic value in its header.
- * @param file_name path to file
- * @return FileType of file. Note: this will return FileType::Unknown if it is unable to determine
- * a filetype, and will never return FileType::Error.
- */
-FileType IdentifyFile(const std::string& file_name);
-
 /**
  * Guess the type of a bootable file from its name
  * @param name String name of bootable file
@@ -64,20 +56,48 @@ FileType GuessFromFilename(const std::string& name);
 std::string GetFileTypeString(FileType type);
 
 /// Return type for functions in Loader namespace
-enum class ResultStatus {
+enum class ResultStatus : u16 {
     Success,
-    Error,
-    ErrorInvalidFormat,
-    ErrorNotImplemented,
-    ErrorNotLoaded,
-    ErrorNotUsed,
     ErrorAlreadyLoaded,
-    ErrorMemoryAllocationFailed,
-    ErrorMissingKeys,
-    ErrorDecrypting,
-    ErrorUnsupportedArch,
+    ErrorNotImplemented,
+    ErrorNotInitialized,
+    ErrorBadNPDMHeader,
+    ErrorBadACIDHeader,
+    ErrorBadACIHeader,
+    ErrorBadFileAccessControl,
+    ErrorBadFileAccessHeader,
+    ErrorBadPFSHeader,
+    ErrorIncorrectPFSFileSize,
+    ErrorBadNCAHeader,
+    ErrorMissingProductionKeyFile,
+    ErrorMissingHeaderKey,
+    ErrorIncorrectHeaderKey,
+    ErrorNCA2,
+    ErrorNCA0,
+    ErrorMissingTitlekey,
+    ErrorMissingTitlekek,
+    ErrorInvalidRightsID,
+    ErrorMissingKeyAreaKey,
+    ErrorIncorrectKeyAreaKey,
+    ErrorIncorrectTitlekeyOrTitlekek,
+    ErrorXCIMissingProgramNCA,
+    ErrorNCANotProgram,
+    ErrorNoExeFS,
+    ErrorBadXCIHeader,
+    ErrorXCIMissingPartition,
+    ErrorNullFile,
+    ErrorMissingNPDM,
+    Error32BitISA,
+    ErrorNoRomFS,
+    ErrorIncorrectELFFileSize,
+    ErrorLoadingNRO,
+    ErrorNoIcon,
+    ErrorNoControl,
 };
 
+std::string GetMessageForResultStatus(ResultStatus status);
+std::string GetMessageForResultStatus(u16 status);
+
 /// Interface for loading an application
 class AppLoader : NonCopyable {
 public:

src/core/loader/nca.cpp

@@ -46,12 +46,12 @@ ResultStatus AppLoader_NCA::Load(Kernel::SharedPtr<Kernel::Process>& process) {
     }
 
     if (nca->GetType() != FileSys::NCAContentType::Program)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorNCANotProgram;
 
     const auto exefs = nca->GetExeFS();
 
     if (exefs == nullptr)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorNoExeFS;
 
     directory_loader = std::make_unique<AppLoader_DeconstructedRomDirectory>(exefs);
 
@@ -69,16 +69,16 @@ ResultStatus AppLoader_NCA::Load(Kernel::SharedPtr<Kernel::Process>& process) {
 
 ResultStatus AppLoader_NCA::ReadRomFS(FileSys::VirtualFile& dir) {
     if (nca == nullptr)
-        return ResultStatus::ErrorNotLoaded;
+        return ResultStatus::ErrorNotInitialized;
     if (nca->GetRomFS() == nullptr || nca->GetRomFS()->GetSize() == 0)
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoRomFS;
     dir = nca->GetRomFS();
     return ResultStatus::Success;
 }
 
 ResultStatus AppLoader_NCA::ReadProgramId(u64& out_program_id) {
     if (nca == nullptr || nca->GetStatus() != ResultStatus::Success)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorNotInitialized;
     out_program_id = nca->GetTitleId();
     return ResultStatus::Success;
 }

src/core/loader/nro.cpp

@@ -182,7 +182,7 @@ ResultStatus AppLoader_NRO::Load(Kernel::SharedPtr<Kernel::Process>& process) {
     static constexpr VAddr base_addr{Memory::PROCESS_IMAGE_VADDR};
 
     if (!LoadNro(file, base_addr)) {
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorLoadingNRO;
     }
 
     process->svc_access_mask.set();
@@ -197,7 +197,7 @@ ResultStatus AppLoader_NRO::Load(Kernel::SharedPtr<Kernel::Process>& process) {
 
 ResultStatus AppLoader_NRO::ReadIcon(std::vector<u8>& buffer) {
     if (icon_data.empty()) {
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoIcon;
     }
 
     buffer = icon_data;
@@ -206,7 +206,7 @@ ResultStatus AppLoader_NRO::ReadIcon(std::vector<u8>& buffer) {
 
 ResultStatus AppLoader_NRO::ReadProgramId(u64& out_program_id) {
     if (nacp == nullptr) {
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoControl;
     }
 
     out_program_id = nacp->GetTitleId();
@@ -215,7 +215,7 @@ ResultStatus AppLoader_NRO::ReadProgramId(u64& out_program_id) {
 
 ResultStatus AppLoader_NRO::ReadRomFS(FileSys::VirtualFile& dir) {
     if (romfs == nullptr) {
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoRomFS;
     }
 
     dir = romfs;
@@ -224,7 +224,7 @@ ResultStatus AppLoader_NRO::ReadRomFS(FileSys::VirtualFile& dir) {
 
 ResultStatus AppLoader_NRO::ReadTitle(std::string& title) {
     if (nacp == nullptr) {
-        return ResultStatus::ErrorNotUsed;
+        return ResultStatus::ErrorNoControl;
     }
 
     title = nacp->GetApplicationName();

src/core/loader/xci.cpp

@@ -66,10 +66,13 @@ ResultStatus AppLoader_XCI::Load(Kernel::SharedPtr<Kernel::Process>& process) {
         return ResultStatus::ErrorAlreadyLoaded;
     }
 
+    if (xci->GetStatus() != ResultStatus::Success)
+        return xci->GetStatus();
+
     if (xci->GetNCAFileByType(FileSys::NCAContentType::Program) == nullptr) {
         if (!Core::Crypto::KeyManager::KeyFileExists(false))
-            return ResultStatus::ErrorMissingKeys;
-        return ResultStatus::ErrorDecrypting;
+            return ResultStatus::ErrorMissingProductionKeyFile;
+        return ResultStatus::ErrorXCIMissingProgramNCA;
     }
 
     auto result = nca_loader->Load(process);
@@ -91,14 +94,14 @@ ResultStatus AppLoader_XCI::ReadProgramId(u64& out_program_id) {
 
 ResultStatus AppLoader_XCI::ReadIcon(std::vector<u8>& buffer) {
     if (icon_file == nullptr)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorNoControl;
     buffer = icon_file->ReadAllBytes();
     return ResultStatus::Success;
 }
 
 ResultStatus AppLoader_XCI::ReadTitle(std::string& title) {
     if (nacp_file == nullptr)
-        return ResultStatus::ErrorInvalidFormat;
+        return ResultStatus::ErrorNoControl;
     title = nacp_file->GetApplicationName();
     return ResultStatus::Success;
 }

src/core/settings.cpp

@@ -7,22 +7,18 @@
 #include "core/hle/service/hid/hid.h"
 #include "core/settings.h"
 #include "video_core/renderer_base.h"
-#include "video_core/video_core.h"
 
 namespace Settings {
 
 Values values = {};
 
 void Apply() {
-
     GDBStub::SetServerPort(values.gdbstub_port);
     GDBStub::ToggleServer(values.use_gdbstub);
 
-    VideoCore::g_toggle_framelimit_enabled = values.toggle_framelimit;
-
     auto& system_instance = Core::System::GetInstance();
     if (system_instance.IsPoweredOn()) {
-        system_instance.Renderer().UpdateCurrentFramebufferLayout();
+        system_instance.Renderer().RefreshBaseSettings();
     }
 
     Service::HID::ReloadInputDevices();

src/video_core/command_processor.h

@@ -30,8 +30,7 @@ union CommandHeader {
 
     BitField<29, 3, SubmissionMode> mode;
 };
-static_assert(std::is_standard_layout<CommandHeader>::value == true,
-              "CommandHeader does not use standard layout");
+static_assert(std::is_standard_layout_v<CommandHeader>, "CommandHeader is not standard layout");
 static_assert(sizeof(CommandHeader) == sizeof(u32), "CommandHeader has incorrect size!");
 
 } // namespace Tegra

src/video_core/engines/maxwell_3d.cpp

@@ -23,12 +23,17 @@ Maxwell3D::Maxwell3D(VideoCore::RasterizerInterface& rasterizer, MemoryManager&
     : memory_manager(memory_manager), rasterizer{rasterizer}, macro_interpreter(*this) {}
 
 void Maxwell3D::CallMacroMethod(u32 method, std::vector<u32> parameters) {
-    auto macro_code = uploaded_macros.find(method);
-    // The requested macro must have been uploaded already.
-    ASSERT_MSG(macro_code != uploaded_macros.end(), "Macro %08X was not uploaded", method);
-
-    // Reset the current macro and execute it.
+    // Reset the current macro.
     executing_macro = 0;
+
+    // The requested macro must have been uploaded already.
+    auto macro_code = uploaded_macros.find(method);
+    if (macro_code == uploaded_macros.end()) {
+        LOG_ERROR(HW_GPU, "Macro {:04X} was not uploaded", method);
+        return;
+    }
+
+    // Execute the current macro.
     macro_interpreter.Execute(macro_code->second, std::move(parameters));
 }
 

src/video_core/engines/maxwell_3d.h

@@ -93,6 +93,7 @@ public:
 
         struct VertexAttribute {
             enum class Size : u32 {
+                Invalid = 0x0,
                 Size_32_32_32_32 = 0x01,
                 Size_32_32_32 = 0x02,
                 Size_16_16_16_16 = 0x03,
@@ -257,6 +258,10 @@ public:
             bool IsNormalized() const {
                 return (type == Type::SignedNorm) || (type == Type::UnsignedNorm);
             }
+
+            bool IsValid() const {
+                return size != Size::Invalid;
+            }
         };
 
         enum class PrimitiveTopology : u32 {
@@ -352,6 +357,27 @@ public:
                 OneMinusConstantColor = 0x62,
                 ConstantAlpha = 0x63,
                 OneMinusConstantAlpha = 0x64,
+
+                // These values are used by Nouveau and some games.
+                ZeroGL = 0x4000,
+                OneGL = 0x4001,
+                SourceColorGL = 0x4300,
+                OneMinusSourceColorGL = 0x4301,
+                SourceAlphaGL = 0x4302,
+                OneMinusSourceAlphaGL = 0x4303,
+                DestAlphaGL = 0x4304,
+                OneMinusDestAlphaGL = 0x4305,
+                DestColorGL = 0x4306,
+                OneMinusDestColorGL = 0x4307,
+                SourceAlphaSaturateGL = 0x4308,
+                ConstantColorGL = 0xc001,
+                OneMinusConstantColorGL = 0xc002,
+                ConstantAlphaGL = 0xc003,
+                OneMinusConstantAlphaGL = 0xc004,
+                Source1ColorGL = 0xc900,
+                OneMinusSource1ColorGL = 0xc901,
+                Source1AlphaGL = 0xc902,
+                OneMinusSource1AlphaGL = 0xc903,
             };
 
             u32 separate_alpha;

src/video_core/engines/shader_bytecode.h

@@ -74,12 +74,11 @@ union Attribute {
     enum class Index : u64 {
         Position = 7,
         Attribute_0 = 8,
+        Attribute_31 = 39,
         // This attribute contains a tuple of (~, ~, InstanceId, VertexId) when inside a vertex
         // shader, and a tuple of (TessCoord.x, TessCoord.y, TessCoord.z, ~) when inside a Tess Eval
         // shader.
         TessCoordInstanceIDVertexID = 47,
-        // TODO(bunnei): Figure out what this is used for. Super Mario Odyssey uses this.
-        Unknown_63 = 63,
     };
 
     union {
@@ -201,6 +200,14 @@ enum class IMinMaxExchange : u64 {
     XHi = 3,
 };
 
+enum class XmadMode : u64 {
+    None = 0,
+    CLo = 1,
+    CHi = 2,
+    CSfu = 3,
+    CBcc = 4,
+};
+
 enum class FlowCondition : u64 {
     Always = 0xF,
     Fcsm_Tr = 0x1C, // TODO(bunnei): What is this used for?
@@ -457,6 +464,18 @@ union Instruction {
         }
     } bra;
 
+    union {
+        BitField<20, 16, u64> imm20_16;
+        BitField<36, 1, u64> product_shift_left;
+        BitField<37, 1, u64> merge_37;
+        BitField<48, 1, u64> sign_a;
+        BitField<49, 1, u64> sign_b;
+        BitField<50, 3, XmadMode> mode;
+        BitField<52, 1, u64> high_b;
+        BitField<53, 1, u64> high_a;
+        BitField<56, 1, u64> merge_56;
+    } xmad;
+
     union {
         BitField<20, 14, u64> offset;
         BitField<34, 5, u64> index;
@@ -477,8 +496,7 @@ union Instruction {
     u64 value;
 };
 static_assert(sizeof(Instruction) == 0x8, "Incorrect structure size");
-static_assert(std::is_standard_layout<Instruction>::value,
-              "Structure does not have standard layout");
+static_assert(std::is_standard_layout_v<Instruction>, "Instruction is not standard layout");
 
 class OpCode {
 public:
@@ -595,9 +613,17 @@ public:
         IntegerSetPredicate,
         PredicateSetPredicate,
         Conversion,
+        Xmad,
         Unknown,
     };
 
+    /// Returns whether an opcode has an execution predicate field or not (ie, whether it can be
+    /// conditionally executed).
+    static bool IsPredicatedInstruction(Id opcode) {
+        // TODO(Subv): Add the rest of unpredicated instructions.
+        return opcode != Id::SSY;
+    }
+
     class Matcher {
     public:
         Matcher(const char* const name, u16 mask, u16 expected, OpCode::Id id, OpCode::Type type)
@@ -777,10 +803,10 @@ private:
             INST("010010110101----", Id::ISET_C, Type::IntegerSet, "ISET_C"),
             INST("0011011-0101----", Id::ISET_IMM, Type::IntegerSet, "ISET_IMM"),
             INST("0101000010010---", Id::PSETP, Type::PredicateSetPredicate, "PSETP"),
-            INST("0011011-00------", Id::XMAD_IMM, Type::Arithmetic, "XMAD_IMM"),
-            INST("0100111---------", Id::XMAD_CR, Type::Arithmetic, "XMAD_CR"),
-            INST("010100010-------", Id::XMAD_RC, Type::Arithmetic, "XMAD_RC"),
-            INST("0101101100------", Id::XMAD_RR, Type::Arithmetic, "XMAD_RR"),
+            INST("0011011-00------", Id::XMAD_IMM, Type::Xmad, "XMAD_IMM"),
+            INST("0100111---------", Id::XMAD_CR, Type::Xmad, "XMAD_CR"),
+            INST("010100010-------", Id::XMAD_RC, Type::Xmad, "XMAD_RC"),
+            INST("0101101100------", Id::XMAD_RR, Type::Xmad, "XMAD_RR"),
         };
 #undef INST
         std::stable_sort(table.begin(), table.end(), [](const auto& a, const auto& b) {

src/video_core/gpu.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "common/assert.h"
 #include "video_core/engines/fermi_2d.h"
 #include "video_core/engines/maxwell_3d.h"
 #include "video_core/engines/maxwell_compute.h"
@@ -11,6 +12,15 @@
 
 namespace Tegra {
 
+u32 FramebufferConfig::BytesPerPixel(PixelFormat format) {
+    switch (format) {
+    case PixelFormat::ABGR8:
+        return 4;
+    }
+
+    UNREACHABLE();
+}
+
 GPU::GPU(VideoCore::RasterizerInterface& rasterizer) {
     memory_manager = std::make_unique<MemoryManager>();
     maxwell_3d = std::make_unique<Engines::Maxwell3D>(rasterizer, *memory_manager);
@@ -34,19 +44,56 @@ u32 RenderTargetBytesPerPixel(RenderTargetFormat format) {
 
     switch (format) {
     case RenderTargetFormat::RGBA32_FLOAT:
+    case RenderTargetFormat::RGBA32_UINT:
         return 16;
+    case RenderTargetFormat::RGBA16_UINT:
     case RenderTargetFormat::RGBA16_FLOAT:
     case RenderTargetFormat::RG32_FLOAT:
         return 8;
     case RenderTargetFormat::RGBA8_UNORM:
+    case RenderTargetFormat::RGBA8_SNORM:
+    case RenderTargetFormat::RGBA8_SRGB:
     case RenderTargetFormat::RGB10_A2_UNORM:
     case RenderTargetFormat::BGRA8_UNORM:
+    case RenderTargetFormat::RG16_UNORM:
+    case RenderTargetFormat::RG16_SNORM:
+    case RenderTargetFormat::RG16_UINT:
+    case RenderTargetFormat::RG16_SINT:
+    case RenderTargetFormat::RG16_FLOAT:
     case RenderTargetFormat::R32_FLOAT:
     case RenderTargetFormat::R11G11B10_FLOAT:
         return 4;
+    case RenderTargetFormat::R16_UNORM:
+    case RenderTargetFormat::R16_SNORM:
+    case RenderTargetFormat::R16_UINT:
+    case RenderTargetFormat::R16_SINT:
+    case RenderTargetFormat::R16_FLOAT:
+    case RenderTargetFormat::RG8_UNORM:
+    case RenderTargetFormat::RG8_SNORM:
+        return 2;
+    case RenderTargetFormat::R8_UNORM:
+    case RenderTargetFormat::R8_UINT:
+        return 1;
     default:
         UNIMPLEMENTED_MSG("Unimplemented render target format {}", static_cast<u32>(format));
     }
 }
 
+u32 DepthFormatBytesPerPixel(DepthFormat format) {
+    switch (format) {
+    case DepthFormat::Z32_S8_X24_FLOAT:
+        return 8;
+    case DepthFormat::Z32_FLOAT:
+    case DepthFormat::S8_Z24_UNORM:
+    case DepthFormat::Z24_X8_UNORM:
+    case DepthFormat::Z24_S8_UNORM:
+    case DepthFormat::Z24_C8_UNORM:
+        return 4;
+    case DepthFormat::Z16_UNORM:
+        return 2;
+    default:
+        UNIMPLEMENTED_MSG("Unimplemented Depth format {}", static_cast<u32>(format));
+    }
+}
+
 } // namespace Tegra

src/video_core/gpu.h

@@ -6,7 +6,6 @@
 
 #include <memory>
 #include <unordered_map>
-#include <vector>
 #include "common/common_types.h"
 #include "core/hle/service/nvflinger/buffer_queue.h"
 #include "video_core/memory_manager.h"
@@ -21,12 +20,14 @@ enum class RenderTargetFormat : u32 {
     NONE = 0x0,
     RGBA32_FLOAT = 0xC0,
     RGBA32_UINT = 0xC2,
+    RGBA16_UINT = 0xC9,
     RGBA16_FLOAT = 0xCA,
     RG32_FLOAT = 0xCB,
     BGRA8_UNORM = 0xCF,
     RGB10_A2_UNORM = 0xD1,
     RGBA8_UNORM = 0xD5,
     RGBA8_SRGB = 0xD6,
+    RGBA8_SNORM = 0xD7,
     RG16_UNORM = 0xDA,
     RG16_SNORM = 0xDB,
     RG16_SINT = 0xDC,
@@ -34,8 +35,16 @@ enum class RenderTargetFormat : u32 {
     RG16_FLOAT = 0xDE,
     R11G11B10_FLOAT = 0xE0,
     R32_FLOAT = 0xE5,
+    B5G6R5_UNORM = 0xE8,
+    RG8_UNORM = 0xEA,
+    RG8_SNORM = 0xEB,
+    R16_UNORM = 0xEE,
+    R16_SNORM = 0xEF,
+    R16_SINT = 0xF0,
+    R16_UINT = 0xF1,
     R16_FLOAT = 0xF2,
     R8_UNORM = 0xF3,
+    R8_UINT = 0xF6,
 };
 
 enum class DepthFormat : u32 {
@@ -51,6 +60,9 @@ enum class DepthFormat : u32 {
 /// Returns the number of bytes per pixel of each rendertarget format.
 u32 RenderTargetBytesPerPixel(RenderTargetFormat format);
 
+/// Returns the number of bytes per pixel of each depth format.
+u32 DepthFormatBytesPerPixel(DepthFormat format);
+
 class DebugContext;
 
 /**
@@ -64,14 +76,7 @@ struct FramebufferConfig {
     /**
      * Returns the number of bytes per pixel.
      */
-    static u32 BytesPerPixel(PixelFormat format) {
-        switch (format) {
-        case PixelFormat::ABGR8:
-            return 4;
-        }
-
-        UNREACHABLE();
-    }
+    static u32 BytesPerPixel(PixelFormat format);
 
     VAddr address;
     u32 offset;

src/video_core/renderer_base.cpp

@@ -4,18 +4,23 @@
 
 #include <memory>
 #include "core/frontend/emu_window.h"
+#include "core/settings.h"
 #include "video_core/renderer_base.h"
 #include "video_core/renderer_opengl/gl_rasterizer.h"
 
 namespace VideoCore {
 
-RendererBase::RendererBase(EmuWindow& window) : render_window{window} {}
+RendererBase::RendererBase(Core::Frontend::EmuWindow& window) : render_window{window} {
+    RefreshBaseSettings();
+}
+
 RendererBase::~RendererBase() = default;
 
-void RendererBase::UpdateCurrentFramebufferLayout() {
-    const Layout::FramebufferLayout& layout = render_window.GetFramebufferLayout();
+void RendererBase::RefreshBaseSettings() {
+    RefreshRasterizerSetting();
+    UpdateCurrentFramebufferLayout();
 
-    render_window.UpdateCurrentFramebufferLayout(layout.width, layout.height);
+    renderer_settings.use_framelimiter = Settings::values.toggle_framelimit;
 }
 
 void RendererBase::RefreshRasterizerSetting() {
@@ -24,4 +29,10 @@ void RendererBase::RefreshRasterizerSetting() {
     }
 }
 
+void RendererBase::UpdateCurrentFramebufferLayout() {
+    const Layout::FramebufferLayout& layout = render_window.GetFramebufferLayout();
+
+    render_window.UpdateCurrentFramebufferLayout(layout.width, layout.height);
+}
+
 } // namespace VideoCore

src/video_core/renderer_base.h

@@ -4,23 +4,26 @@
 
 #pragma once
 
+#include <atomic>
 #include <memory>
 #include <boost/optional.hpp>
-#include "common/assert.h"
 #include "common/common_types.h"
 #include "video_core/gpu.h"
 #include "video_core/rasterizer_interface.h"
 
+namespace Core::Frontend {
 class EmuWindow;
+}
 
 namespace VideoCore {
 
+struct RendererSettings {
+    std::atomic_bool use_framelimiter{false};
+};
+
 class RendererBase : NonCopyable {
 public:
-    /// Used to reference a framebuffer
-    enum kFramebuffer { kFramebuffer_VirtualXFB = 0, kFramebuffer_EFB, kFramebuffer_Texture };
-
-    explicit RendererBase(EmuWindow& window);
+    explicit RendererBase(Core::Frontend::EmuWindow& window);
     virtual ~RendererBase();
 
     /// Swap buffers (render frame)
@@ -32,9 +35,6 @@ public:
     /// Shutdown the renderer
     virtual void ShutDown() = 0;
 
-    /// Updates the framebuffer layout of the contained render window handle.
-    void UpdateCurrentFramebufferLayout();
-
     // Getter/setter functions:
     // ------------------------
 
@@ -54,13 +54,23 @@ public:
         return *rasterizer;
     }
 
-    void RefreshRasterizerSetting();
+    /// Refreshes the settings common to all renderers
+    void RefreshBaseSettings();
 
 protected:
-    EmuWindow& render_window; ///< Reference to the render window handle.
+    /// Refreshes settings specific to the rasterizer.
+    void RefreshRasterizerSetting();
+
+    Core::Frontend::EmuWindow& render_window; ///< Reference to the render window handle.
     std::unique_ptr<RasterizerInterface> rasterizer;
     f32 m_current_fps = 0.0f; ///< Current framerate, should be set by the renderer
     int m_current_frame = 0;  ///< Current frame, should be set by the renderer
+
+    RendererSettings renderer_settings;
+
+private:
+    /// Updates the framebuffer layout of the contained render window handle.
+    void UpdateCurrentFramebufferLayout();
 };
 
 } // namespace VideoCore

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -36,30 +36,21 @@ MICROPROFILE_DEFINE(OpenGL_Drawing, "OpenGL", "Drawing", MP_RGB(128, 128, 192));
 MICROPROFILE_DEFINE(OpenGL_Blits, "OpenGL", "Blits", MP_RGB(100, 100, 255));
 MICROPROFILE_DEFINE(OpenGL_CacheManagement, "OpenGL", "Cache Mgmt", MP_RGB(100, 255, 100));
 
-RasterizerOpenGL::RasterizerOpenGL(EmuWindow& window) : emu_window{window} {
+RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& window)
+    : emu_window{window}, stream_buffer(GL_ARRAY_BUFFER, STREAM_BUFFER_SIZE) {
     // Create sampler objects
     for (size_t i = 0; i < texture_samplers.size(); ++i) {
         texture_samplers[i].Create();
         state.texture_units[i].sampler = texture_samplers[i].sampler.handle;
     }
 
-    // Create SSBOs
-    for (size_t stage = 0; stage < ssbos.size(); ++stage) {
-        for (size_t buffer = 0; buffer < ssbos[stage].size(); ++buffer) {
-            ssbos[stage][buffer].Create();
-            state.draw.const_buffers[stage][buffer].ssbo = ssbos[stage][buffer].handle;
-        }
-    }
-
     GLint ext_num;
     glGetIntegerv(GL_NUM_EXTENSIONS, &ext_num);
     for (GLint i = 0; i < ext_num; i++) {
         const std::string_view extension{
             reinterpret_cast<const char*>(glGetStringi(GL_EXTENSIONS, i))};
 
-        if (extension == "GL_ARB_buffer_storage") {
-            has_ARB_buffer_storage = true;
-        } else if (extension == "GL_ARB_direct_state_access") {
+        if (extension == "GL_ARB_direct_state_access") {
             has_ARB_direct_state_access = true;
         } else if (extension == "GL_ARB_separate_shader_objects") {
             has_ARB_separate_shader_objects = true;
@@ -86,47 +77,31 @@ RasterizerOpenGL::RasterizerOpenGL(EmuWindow& window) : emu_window{window} {
 
     hw_vao.Create();
 
-    stream_buffer = OGLStreamBuffer::MakeBuffer(has_ARB_buffer_storage, GL_ARRAY_BUFFER);
-    stream_buffer->Create(STREAM_BUFFER_SIZE, STREAM_BUFFER_SIZE / 2);
-    state.draw.vertex_buffer = stream_buffer->GetHandle();
+    state.draw.vertex_buffer = stream_buffer.GetHandle();
 
     shader_program_manager = std::make_unique<GLShader::ProgramManager>();
     state.draw.shader_program = 0;
     state.draw.vertex_array = hw_vao.handle;
     state.Apply();
 
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, stream_buffer->GetHandle());
-
-    for (unsigned index = 0; index < uniform_buffers.size(); ++index) {
-        auto& buffer = uniform_buffers[index];
-        buffer.Create();
-        glBindBuffer(GL_UNIFORM_BUFFER, buffer.handle);
-        glBufferData(GL_UNIFORM_BUFFER, sizeof(GLShader::MaxwellUniformData), nullptr,
-                     GL_STREAM_COPY);
-        glBindBufferBase(GL_UNIFORM_BUFFER, index, buffer.handle);
-    }
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, stream_buffer.GetHandle());
 
     glEnable(GL_BLEND);
 
+    glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &uniform_buffer_alignment);
+
     LOG_CRITICAL(Render_OpenGL, "Sync fixed function OpenGL state here!");
 }
 
-RasterizerOpenGL::~RasterizerOpenGL() {
-    if (stream_buffer != nullptr) {
-        state.draw.vertex_buffer = stream_buffer->GetHandle();
-        state.Apply();
-        stream_buffer->Release();
-    }
-}
+RasterizerOpenGL::~RasterizerOpenGL() {}
 
 std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
                                                              GLintptr buffer_offset) {
     MICROPROFILE_SCOPE(OpenGL_VAO);
     const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
-    const auto& memory_manager = Core::System::GetInstance().GPU().memory_manager;
 
     state.draw.vertex_array = hw_vao.handle;
-    state.draw.vertex_buffer = stream_buffer->GetHandle();
+    state.draw.vertex_buffer = stream_buffer.GetHandle();
     state.Apply();
 
     // Upload all guest vertex arrays sequentially to our buffer
@@ -141,16 +116,15 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
         ASSERT(end > start);
         u64 size = end - start + 1;
 
-        // Copy vertex array data
-        Memory::ReadBlock(*memory_manager->GpuToCpuAddress(start), array_ptr, size);
+        GLintptr vertex_buffer_offset;
+        std::tie(array_ptr, buffer_offset, vertex_buffer_offset) =
+            UploadMemory(array_ptr, buffer_offset, start, size);
 
         // Bind the vertex array to the buffer at the current offset.
-        glBindVertexBuffer(index, stream_buffer->GetHandle(), buffer_offset, vertex_array.stride);
+        glBindVertexBuffer(index, stream_buffer.GetHandle(), vertex_buffer_offset,
+                           vertex_array.stride);
 
         ASSERT_MSG(vertex_array.divisor == 0, "Vertex buffer divisor unimplemented");
-
-        array_ptr += size;
-        buffer_offset += size;
     }
 
     // Use the vertex array as-is, assumes that the data is formatted correctly for OpenGL.
@@ -161,11 +135,16 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
     // assume every shader uses them all.
     for (unsigned index = 0; index < 16; ++index) {
         auto& attrib = regs.vertex_attrib_format[index];
+
+        // Ignore invalid attributes.
+        if (!attrib.IsValid())
+            continue;
+
+        auto& buffer = regs.vertex_array[attrib.buffer];
         LOG_TRACE(HW_GPU, "vertex attrib {}, count={}, size={}, type={}, offset={}, normalize={}",
                   index, attrib.ComponentCount(), attrib.SizeString(), attrib.TypeString(),
                   attrib.offset.Value(), attrib.IsNormalized());
 
-        auto& buffer = regs.vertex_array[attrib.buffer];
         ASSERT(buffer.IsEnabled());
 
         glEnableVertexAttribArray(index);
@@ -196,22 +175,12 @@ static GLShader::ProgramCode GetShaderProgramCode(Maxwell::ShaderProgram program
     return program_code;
 }
 
-void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
-    // Helper function for uploading uniform data
-    const auto copy_buffer = [&](GLuint handle, GLintptr offset, GLsizeiptr size) {
-        if (has_ARB_direct_state_access) {
-            glCopyNamedBufferSubData(stream_buffer->GetHandle(), handle, offset, 0, size);
-        } else {
-            glBindBuffer(GL_COPY_WRITE_BUFFER, handle);
-            glCopyBufferSubData(GL_ARRAY_BUFFER, GL_COPY_WRITE_BUFFER, offset, 0, size);
-        }
-    };
-
+std::pair<u8*, GLintptr> RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
     auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
 
     // Next available bindpoints to use when uploading the const buffers and textures to the GLSL
     // shaders. The constbuffer bindpoint starts after the shader stage configuration bind points.
-    u32 current_constbuffer_bindpoint = uniform_buffers.size();
+    u32 current_constbuffer_bindpoint = Tegra::Engines::Maxwell3D::Regs::MaxShaderStage;
     u32 current_texture_bindpoint = 0;
 
     for (size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) {
@@ -223,22 +192,21 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
             continue;
         }
 
+        std::tie(buffer_ptr, buffer_offset) =
+            AlignBuffer(buffer_ptr, buffer_offset, static_cast<size_t>(uniform_buffer_alignment));
+
         const size_t stage{index == 0 ? 0 : index - 1}; // Stage indices are 0 - 5
 
         GLShader::MaxwellUniformData ubo{};
         ubo.SetFromRegs(gpu.state.shader_stages[stage]);
         std::memcpy(buffer_ptr, &ubo, sizeof(ubo));
 
-        // Flush the buffer so that the GPU can see the data we just wrote.
-        glFlushMappedBufferRange(GL_ARRAY_BUFFER, buffer_offset, sizeof(ubo));
+        // Bind the buffer
+        glBindBufferRange(GL_UNIFORM_BUFFER, stage, stream_buffer.GetHandle(), buffer_offset,
+                          sizeof(ubo));
 
-        // Upload uniform data as one UBO per stage
-        const GLintptr ubo_offset = buffer_offset;
-        copy_buffer(uniform_buffers[stage].handle, ubo_offset,
-                    sizeof(GLShader::MaxwellUniformData));
-
-        buffer_ptr += sizeof(GLShader::MaxwellUniformData);
-        buffer_offset += sizeof(GLShader::MaxwellUniformData);
+        buffer_ptr += sizeof(ubo);
+        buffer_offset += sizeof(ubo);
 
         GLShader::ShaderSetup setup{GetShaderProgramCode(program)};
         GLShader::ShaderEntries shader_resources;
@@ -277,9 +245,9 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
             static_cast<Maxwell::ShaderStage>(stage));
 
         // Configure the const buffers for this shader stage.
-        current_constbuffer_bindpoint =
-            SetupConstBuffers(static_cast<Maxwell::ShaderStage>(stage), gl_stage_program,
-                              current_constbuffer_bindpoint, shader_resources.const_buffer_entries);
+        std::tie(buffer_ptr, buffer_offset, current_constbuffer_bindpoint) = SetupConstBuffers(
+            buffer_ptr, buffer_offset, static_cast<Maxwell::ShaderStage>(stage), gl_stage_program,
+            current_constbuffer_bindpoint, shader_resources.const_buffer_entries);
 
         // Configure the textures for this shader stage.
         current_texture_bindpoint =
@@ -294,6 +262,8 @@ void RasterizerOpenGL::SetupShaders(u8* buffer_ptr, GLintptr buffer_offset) {
     }
 
     shader_program_manager->UseTrivialGeometryShader();
+
+    return {buffer_ptr, buffer_offset};
 }
 
 size_t RasterizerOpenGL::CalculateVertexArraysSize() const {
@@ -324,11 +294,14 @@ std::pair<Surface, Surface> RasterizerOpenGL::ConfigureFramebuffers(bool using_c
                                                                     bool using_depth_fb) {
     const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
 
+    if (regs.rt[0].format == Tegra::RenderTargetFormat::NONE) {
+        LOG_ERROR(HW_GPU, "RenderTargetFormat is not configured");
+        using_color_fb = false;
+    }
+
     // TODO(bunnei): Implement this
     const bool has_stencil = false;
 
-    const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[0].GetRect()};
-
     const bool write_color_fb =
         state.color_mask.red_enabled == GL_TRUE || state.color_mask.green_enabled == GL_TRUE ||
         state.color_mask.blue_enabled == GL_TRUE || state.color_mask.alpha_enabled == GL_TRUE;
@@ -341,9 +314,10 @@ std::pair<Surface, Surface> RasterizerOpenGL::ConfigureFramebuffers(bool using_c
     Surface depth_surface;
     MathUtil::Rectangle<u32> surfaces_rect;
     std::tie(color_surface, depth_surface, surfaces_rect) =
-        res_cache.GetFramebufferSurfaces(using_color_fb, using_depth_fb, viewport_rect);
+        res_cache.GetFramebufferSurfaces(using_color_fb, using_depth_fb);
 
-    MathUtil::Rectangle<u32> draw_rect{
+    const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[0].GetRect()};
+    const MathUtil::Rectangle<u32> draw_rect{
         static_cast<u32>(std::clamp<s32>(static_cast<s32>(surfaces_rect.left) + viewport_rect.left,
                                          surfaces_rect.left, surfaces_rect.right)), // Left
         static_cast<u32>(std::clamp<s32>(static_cast<s32>(surfaces_rect.bottom) + viewport_rect.top,
@@ -423,6 +397,31 @@ void RasterizerOpenGL::Clear() {
     }
 }
 
+std::pair<u8*, GLintptr> RasterizerOpenGL::AlignBuffer(u8* buffer_ptr, GLintptr buffer_offset,
+                                                       size_t alignment) {
+    // Align the offset, not the mapped pointer
+    GLintptr offset_aligned =
+        static_cast<GLintptr>(Common::AlignUp(static_cast<size_t>(buffer_offset), alignment));
+    return {buffer_ptr + (offset_aligned - buffer_offset), offset_aligned};
+}
+
+std::tuple<u8*, GLintptr, GLintptr> RasterizerOpenGL::UploadMemory(u8* buffer_ptr,
+                                                                   GLintptr buffer_offset,
+                                                                   Tegra::GPUVAddr gpu_addr,
+                                                                   size_t size, size_t alignment) {
+    std::tie(buffer_ptr, buffer_offset) = AlignBuffer(buffer_ptr, buffer_offset, alignment);
+    GLintptr uploaded_offset = buffer_offset;
+
+    const auto& memory_manager = Core::System::GetInstance().GPU().memory_manager;
+    const boost::optional<VAddr> cpu_addr{memory_manager->GpuToCpuAddress(gpu_addr)};
+    Memory::ReadBlock(*cpu_addr, buffer_ptr, size);
+
+    buffer_ptr += size;
+    buffer_offset += size;
+
+    return {buffer_ptr, buffer_offset, uploaded_offset};
+}
+
 void RasterizerOpenGL::DrawArrays() {
     if (accelerate_draw == AccelDraw::Disabled)
         return;
@@ -447,7 +446,7 @@ void RasterizerOpenGL::DrawArrays() {
     const u64 index_buffer_size{regs.index_array.count * regs.index_array.FormatSizeInBytes()};
     const unsigned vertex_num{is_indexed ? regs.index_array.count : regs.vertex_buffer.count};
 
-    state.draw.vertex_buffer = stream_buffer->GetHandle();
+    state.draw.vertex_buffer = stream_buffer.GetHandle();
     state.Apply();
 
     size_t buffer_size = CalculateVertexArraysSize();
@@ -457,41 +456,31 @@ void RasterizerOpenGL::DrawArrays() {
     }
 
     // Uniform space for the 5 shader stages
-    buffer_size = Common::AlignUp<size_t>(buffer_size, 4) +
-                  sizeof(GLShader::MaxwellUniformData) * Maxwell::MaxShaderStage;
+    buffer_size =
+        Common::AlignUp<size_t>(buffer_size, 4) +
+        (sizeof(GLShader::MaxwellUniformData) + uniform_buffer_alignment) * Maxwell::MaxShaderStage;
+
+    // Add space for at least 18 constant buffers
+    buffer_size += Maxwell::MaxConstBuffers * (MaxConstbufferSize + uniform_buffer_alignment);
 
     u8* buffer_ptr;
     GLintptr buffer_offset;
-    std::tie(buffer_ptr, buffer_offset) =
-        stream_buffer->Map(static_cast<GLsizeiptr>(buffer_size), 4);
+    std::tie(buffer_ptr, buffer_offset, std::ignore) =
+        stream_buffer.Map(static_cast<GLsizeiptr>(buffer_size), 4);
+    u8* buffer_ptr_base = buffer_ptr;
 
-    u8* offseted_buffer;
-    std::tie(offseted_buffer, buffer_offset) = SetupVertexArrays(buffer_ptr, buffer_offset);
-
-    offseted_buffer =
-        reinterpret_cast<u8*>(Common::AlignUp(reinterpret_cast<size_t>(offseted_buffer), 4));
-    buffer_offset = Common::AlignUp<size_t>(buffer_offset, 4);
+    std::tie(buffer_ptr, buffer_offset) = SetupVertexArrays(buffer_ptr, buffer_offset);
 
     // If indexed mode, copy the index buffer
     GLintptr index_buffer_offset = 0;
     if (is_indexed) {
-        const auto& memory_manager = Core::System::GetInstance().GPU().memory_manager;
-        const boost::optional<VAddr> index_data_addr{
-            memory_manager->GpuToCpuAddress(regs.index_array.StartAddress())};
-        Memory::ReadBlock(*index_data_addr, offseted_buffer, index_buffer_size);
-
-        index_buffer_offset = buffer_offset;
-        offseted_buffer += index_buffer_size;
-        buffer_offset += index_buffer_size;
+        std::tie(buffer_ptr, buffer_offset, index_buffer_offset) = UploadMemory(
+            buffer_ptr, buffer_offset, regs.index_array.StartAddress(), index_buffer_size);
     }
 
-    offseted_buffer =
-        reinterpret_cast<u8*>(Common::AlignUp(reinterpret_cast<size_t>(offseted_buffer), 4));
-    buffer_offset = Common::AlignUp<size_t>(buffer_offset, 4);
+    std::tie(buffer_ptr, buffer_offset) = SetupShaders(buffer_ptr, buffer_offset);
 
-    SetupShaders(offseted_buffer, buffer_offset);
-
-    stream_buffer->Unmap();
+    stream_buffer.Unmap(buffer_ptr - buffer_ptr_base);
 
     shader_program_manager->ApplyTo(state);
     state.Apply();
@@ -638,36 +627,23 @@ void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntr
     }
 }
 
-u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint program,
-                                        u32 current_bindpoint,
-                                        const std::vector<GLShader::ConstBufferEntry>& entries) {
+std::tuple<u8*, GLintptr, u32> RasterizerOpenGL::SetupConstBuffers(
+    u8* buffer_ptr, GLintptr buffer_offset, Maxwell::ShaderStage stage, GLuint program,
+    u32 current_bindpoint, const std::vector<GLShader::ConstBufferEntry>& entries) {
     const auto& gpu = Core::System::GetInstance().GPU();
     const auto& maxwell3d = gpu.Maxwell3D();
 
-    // Reset all buffer draw state for this stage.
-    for (auto& buffer : state.draw.const_buffers[static_cast<size_t>(stage)]) {
-        buffer.bindpoint = 0;
-        buffer.enabled = false;
-    }
-
     // Upload only the enabled buffers from the 16 constbuffers of each shader stage
     const auto& shader_stage = maxwell3d.state.shader_stages[static_cast<size_t>(stage)];
 
     for (u32 bindpoint = 0; bindpoint < entries.size(); ++bindpoint) {
         const auto& used_buffer = entries[bindpoint];
         const auto& buffer = shader_stage.const_buffers[used_buffer.GetIndex()];
-        auto& buffer_draw_state =
-            state.draw.const_buffers[static_cast<size_t>(stage)][used_buffer.GetIndex()];
 
         if (!buffer.enabled) {
             continue;
         }
 
-        buffer_draw_state.enabled = true;
-        buffer_draw_state.bindpoint = current_bindpoint + bindpoint;
-
-        boost::optional<VAddr> addr = gpu.memory_manager->GpuToCpuAddress(buffer.address);
-
         size_t size = 0;
 
         if (used_buffer.IsIndirect()) {
@@ -689,25 +665,26 @@ u32 RasterizerOpenGL::SetupConstBuffers(Maxwell::ShaderStage stage, GLuint progr
         size = Common::AlignUp(size, sizeof(GLvec4));
         ASSERT_MSG(size <= MaxConstbufferSize, "Constbuffer too big");
 
-        std::vector<u8> data(size);
-        Memory::ReadBlock(*addr, data.data(), data.size());
+        GLintptr const_buffer_offset;
+        std::tie(buffer_ptr, buffer_offset, const_buffer_offset) =
+            UploadMemory(buffer_ptr, buffer_offset, buffer.address, size,
+                         static_cast<size_t>(uniform_buffer_alignment));
 
-        glBindBuffer(GL_UNIFORM_BUFFER, buffer_draw_state.ssbo);
-        glBufferData(GL_UNIFORM_BUFFER, data.size(), data.data(), GL_DYNAMIC_DRAW);
-        glBindBuffer(GL_UNIFORM_BUFFER, 0);
+        glBindBufferRange(GL_UNIFORM_BUFFER, current_bindpoint + bindpoint,
+                          stream_buffer.GetHandle(), const_buffer_offset, size);
 
         // Now configure the bindpoint of the buffer inside the shader
         const std::string buffer_name = used_buffer.GetName();
         const GLuint index =
             glGetProgramResourceIndex(program, GL_UNIFORM_BLOCK, buffer_name.c_str());
         if (index != GL_INVALID_INDEX) {
-            glUniformBlockBinding(program, index, buffer_draw_state.bindpoint);
+            glUniformBlockBinding(program, index, current_bindpoint + bindpoint);
         }
     }
 
     state.Apply();
 
-    return current_bindpoint + static_cast<u32>(entries.size());
+    return {buffer_ptr, buffer_offset, current_bindpoint + static_cast<u32>(entries.size())};
 }
 
 u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, GLuint program, u32 current_unit,
@@ -807,9 +784,7 @@ void RasterizerOpenGL::SyncClipCoef() {
 void RasterizerOpenGL::SyncCullMode() {
     const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
 
-    // TODO(bunnei): Enable the below once more things work - until then, this may hide regressions
-    // state.cull.enabled = regs.cull.enabled != 0;
-    state.cull.enabled = false;
+    state.cull.enabled = regs.cull.enabled != 0;
 
     if (state.cull.enabled) {
         state.cull.front_face = MaxwellToGL::FrontFace(regs.cull.front_face);

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -7,6 +7,7 @@
 #include <array>
 #include <cstddef>
 #include <memory>
+#include <tuple>
 #include <utility>
 #include <vector>
 #include <glad/glad.h>
@@ -21,12 +22,15 @@
 #include "video_core/renderer_opengl/gl_state.h"
 #include "video_core/renderer_opengl/gl_stream_buffer.h"
 
-class EmuWindow;
 struct ScreenInfo;
 
+namespace Core::Frontend {
+class EmuWindow;
+}
+
 class RasterizerOpenGL : public VideoCore::RasterizerInterface {
 public:
-    explicit RasterizerOpenGL(EmuWindow& renderer);
+    explicit RasterizerOpenGL(Core::Frontend::EmuWindow& renderer);
     ~RasterizerOpenGL() override;
 
     void DrawArrays() override;
@@ -97,9 +101,10 @@ private:
      * @param entries Vector describing the buffers that are actually used in the guest shader.
      * @returns The next available bindpoint for use in the next shader stage.
      */
-    u32 SetupConstBuffers(Tegra::Engines::Maxwell3D::Regs::ShaderStage stage, GLuint program,
-                          u32 current_bindpoint,
-                          const std::vector<GLShader::ConstBufferEntry>& entries);
+    std::tuple<u8*, GLintptr, u32> SetupConstBuffers(
+        u8* buffer_ptr, GLintptr buffer_offset, Tegra::Engines::Maxwell3D::Regs::ShaderStage stage,
+        GLuint program, u32 current_bindpoint,
+        const std::vector<GLShader::ConstBufferEntry>& entries);
 
     /*
      * Configures the current textures to use for the draw command.
@@ -136,7 +141,6 @@ private:
     /// Syncs the blend state to match the guest state
     void SyncBlendState();
 
-    bool has_ARB_buffer_storage = false;
     bool has_ARB_direct_state_access = false;
     bool has_ARB_separate_shader_objects = false;
     bool has_ARB_vertex_attrib_binding = false;
@@ -145,29 +149,31 @@ private:
 
     RasterizerCacheOpenGL res_cache;
 
-    EmuWindow& emu_window;
+    Core::Frontend::EmuWindow& emu_window;
 
     std::unique_ptr<GLShader::ProgramManager> shader_program_manager;
     OGLVertexArray sw_vao;
     OGLVertexArray hw_vao;
 
     std::array<SamplerInfo, GLShader::NumTextureSamplers> texture_samplers;
-    std::array<std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::MaxConstBuffers>,
-               Tegra::Engines::Maxwell3D::Regs::MaxShaderStage>
-        ssbos;
 
     static constexpr size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
-    std::unique_ptr<OGLStreamBuffer> stream_buffer;
+    OGLStreamBuffer stream_buffer;
     OGLBuffer uniform_buffer;
     OGLFramebuffer framebuffer;
+    GLint uniform_buffer_alignment;
 
     size_t CalculateVertexArraysSize() const;
 
     std::pair<u8*, GLintptr> SetupVertexArrays(u8* array_ptr, GLintptr buffer_offset);
 
-    std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::MaxShaderStage> uniform_buffers;
+    std::pair<u8*, GLintptr> SetupShaders(u8* buffer_ptr, GLintptr buffer_offset);
 
-    void SetupShaders(u8* buffer_ptr, GLintptr buffer_offset);
+    std::pair<u8*, GLintptr> AlignBuffer(u8* buffer_ptr, GLintptr buffer_offset, size_t alignment);
+
+    std::tuple<u8*, GLintptr, GLintptr> UploadMemory(u8* buffer_ptr, GLintptr buffer_offset,
+                                                     Tegra::GPUVAddr gpu_addr, size_t size,
+                                                     size_t alignment = 4);
 
     enum class AccelDraw { Disabled, Arrays, Indexed };
     AccelDraw accelerate_draw = AccelDraw::Disabled;

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -92,13 +92,16 @@ struct FormatTuple {
 }
 
 static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_format_tuples = {{
-    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, ComponentType::UNorm, false}, // ABGR8
+    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, ComponentType::UNorm, false}, // ABGR8U
+    {GL_RGBA8, GL_RGBA, GL_BYTE, ComponentType::SNorm, false},                     // ABGR8S
     {GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV, ComponentType::UNorm, false},    // B5G6R5
     {GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, ComponentType::UNorm,
      false}, // A2B10G10R10
     {GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, ComponentType::UNorm, false}, // A1B5G5R5
     {GL_R8, GL_RED, GL_UNSIGNED_BYTE, ComponentType::UNorm, false},                    // R8
+    {GL_R8UI, GL_RED_INTEGER, GL_UNSIGNED_BYTE, ComponentType::UInt, false},           // R8UI
     {GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, ComponentType::Float, false},                 // RGBA16F
+    {GL_RGBA16UI, GL_RGBA, GL_UNSIGNED_SHORT, ComponentType::UInt, false},             // RGBA16UI
     {GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, ComponentType::Float,
      false},                                                                     // R11FG11FB10F
     {GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT, ComponentType::UInt, false}, // RGBA32UI
@@ -109,6 +112,9 @@ static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_form
     {GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
      true},                                                                                 // DXT45
     {GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm, true}, // DXN1
+    {GL_COMPRESSED_RG_RGTC2, GL_RG, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
+     true},                                                                     // DXN2UNORM
+    {GL_COMPRESSED_SIGNED_RG_RGTC2, GL_RG, GL_INT, ComponentType::SNorm, true}, // DXN2SNORM
     {GL_COMPRESSED_RGBA_BPTC_UNORM_ARB, GL_RGB, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
      true},                                                                    // BC7U
     {GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, ComponentType::UNorm, false},        // ASTC_2D_4X4
@@ -119,6 +125,9 @@ static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_form
     {GL_R32F, GL_RED, GL_FLOAT, ComponentType::Float, false},                  // R32F
     {GL_R16F, GL_RED, GL_HALF_FLOAT, ComponentType::Float, false},             // R16F
     {GL_R16, GL_RED, GL_UNSIGNED_SHORT, ComponentType::UNorm, false},          // R16UNORM
+    {GL_R16_SNORM, GL_RED, GL_SHORT, ComponentType::SNorm, false},             // R16S
+    {GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT, ComponentType::UInt, false}, // R16UI
+    {GL_R16I, GL_RED_INTEGER, GL_SHORT, ComponentType::SInt, false},           // R16I
     {GL_RG16, GL_RG, GL_UNSIGNED_SHORT, ComponentType::UNorm, false},          // RG16
     {GL_RG16F, GL_RG, GL_HALF_FLOAT, ComponentType::Float, false},             // RG16F
     {GL_RG16UI, GL_RG_INTEGER, GL_UNSIGNED_SHORT, ComponentType::UInt, false}, // RG16UI
@@ -126,6 +135,8 @@ static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_form
     {GL_RG16_SNORM, GL_RG, GL_SHORT, ComponentType::SNorm, false},             // RG16S
     {GL_RGB32F, GL_RGB, GL_FLOAT, ComponentType::Float, false},                // RGB32F
     {GL_SRGB8_ALPHA8, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, ComponentType::UNorm, false}, // SRGBA8
+    {GL_RG8, GL_RG, GL_UNSIGNED_BYTE, ComponentType::UNorm, false},                       // RG8U
+    {GL_RG8, GL_RG, GL_BYTE, ComponentType::SNorm, false},                                // RG8S
 
     // DepthStencil formats
     {GL_DEPTH24_STENCIL8, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, ComponentType::UNorm,
@@ -180,69 +191,117 @@ MathUtil::Rectangle<u32> SurfaceParams::GetRect() const {
     return {0, actual_height, width, 0};
 }
 
+/// Returns true if the specified PixelFormat is a BCn format, e.g. DXT or DXN
+static bool IsFormatBCn(PixelFormat format) {
+    switch (format) {
+    case PixelFormat::DXT1:
+    case PixelFormat::DXT23:
+    case PixelFormat::DXT45:
+    case PixelFormat::DXN1:
+    case PixelFormat::DXN2SNORM:
+    case PixelFormat::DXN2UNORM:
+    case PixelFormat::BC7U:
+        return true;
+    }
+    return false;
+}
+
 template <bool morton_to_gl, PixelFormat format>
-void MortonCopy(u32 stride, u32 block_height, u32 height, u8* gl_buffer, Tegra::GPUVAddr addr) {
+void MortonCopy(u32 stride, u32 block_height, u32 height, std::vector<u8>& gl_buffer,
+                Tegra::GPUVAddr addr) {
     constexpr u32 bytes_per_pixel = SurfaceParams::GetFormatBpp(format) / CHAR_BIT;
     constexpr u32 gl_bytes_per_pixel = CachedSurface::GetGLBytesPerPixel(format);
     const auto& gpu = Core::System::GetInstance().GPU();
 
     if (morton_to_gl) {
-        if (SurfaceParams::GetFormatType(format) == SurfaceType::ColorTexture) {
-            auto data = Tegra::Texture::UnswizzleTexture(
-                *gpu.memory_manager->GpuToCpuAddress(addr),
-                SurfaceParams::TextureFormatFromPixelFormat(format), stride, height, block_height);
-            std::memcpy(gl_buffer, data.data(), data.size());
-        } else {
-            auto data = Tegra::Texture::UnswizzleDepthTexture(
-                *gpu.memory_manager->GpuToCpuAddress(addr),
-                SurfaceParams::DepthFormatFromPixelFormat(format), stride, height, block_height);
-            std::memcpy(gl_buffer, data.data(), data.size());
-        }
+        // With the BCn formats (DXT and DXN), each 4x4 tile is swizzled instead of just individual
+        // pixel values.
+        const u32 tile_size{IsFormatBCn(format) ? 4U : 1U};
+        const std::vector<u8> data =
+            Tegra::Texture::UnswizzleTexture(*gpu.memory_manager->GpuToCpuAddress(addr), tile_size,
+                                             bytes_per_pixel, stride, height, block_height);
+        const size_t size_to_copy{std::min(gl_buffer.size(), data.size())};
+        gl_buffer.assign(data.begin(), data.begin() + size_to_copy);
     } else {
         // TODO(bunnei): Assumes the default rendering GOB size of 16 (128 lines). We should
         // check the configuration for this and perform more generic un/swizzle
         LOG_WARNING(Render_OpenGL, "need to use correct swizzle/GOB parameters!");
         VideoCore::MortonCopyPixels128(
             stride, height, bytes_per_pixel, gl_bytes_per_pixel,
-            Memory::GetPointer(*gpu.memory_manager->GpuToCpuAddress(addr)), gl_buffer,
+            Memory::GetPointer(*gpu.memory_manager->GpuToCpuAddress(addr)), gl_buffer.data(),
             morton_to_gl);
     }
 }
 
-static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
+static constexpr std::array<void (*)(u32, u32, u32, std::vector<u8>&, Tegra::GPUVAddr),
                             SurfaceParams::MaxPixelFormat>
     morton_to_gl_fns = {
-        MortonCopy<true, PixelFormat::ABGR8>,        MortonCopy<true, PixelFormat::B5G6R5>,
-        MortonCopy<true, PixelFormat::A2B10G10R10>,  MortonCopy<true, PixelFormat::A1B5G5R5>,
-        MortonCopy<true, PixelFormat::R8>,           MortonCopy<true, PixelFormat::RGBA16F>,
-        MortonCopy<true, PixelFormat::R11FG11FB10F>, MortonCopy<true, PixelFormat::RGBA32UI>,
-        MortonCopy<true, PixelFormat::DXT1>,         MortonCopy<true, PixelFormat::DXT23>,
-        MortonCopy<true, PixelFormat::DXT45>,        MortonCopy<true, PixelFormat::DXN1>,
-        MortonCopy<true, PixelFormat::BC7U>,         MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
-        MortonCopy<true, PixelFormat::G8R8>,         MortonCopy<true, PixelFormat::BGRA8>,
-        MortonCopy<true, PixelFormat::RGBA32F>,      MortonCopy<true, PixelFormat::RG32F>,
-        MortonCopy<true, PixelFormat::R32F>,         MortonCopy<true, PixelFormat::R16F>,
-        MortonCopy<true, PixelFormat::R16UNORM>,     MortonCopy<true, PixelFormat::RG16>,
-        MortonCopy<true, PixelFormat::RG16F>,        MortonCopy<true, PixelFormat::RG16UI>,
-        MortonCopy<true, PixelFormat::RG16I>,        MortonCopy<true, PixelFormat::RG16S>,
-        MortonCopy<true, PixelFormat::RGB32F>,       MortonCopy<true, PixelFormat::SRGBA8>,
-        MortonCopy<true, PixelFormat::Z24S8>,        MortonCopy<true, PixelFormat::S8Z24>,
-        MortonCopy<true, PixelFormat::Z32F>,         MortonCopy<true, PixelFormat::Z16>,
+        // clang-format off
+        MortonCopy<true, PixelFormat::ABGR8U>,
+        MortonCopy<true, PixelFormat::ABGR8S>,
+        MortonCopy<true, PixelFormat::B5G6R5>,
+        MortonCopy<true, PixelFormat::A2B10G10R10>,
+        MortonCopy<true, PixelFormat::A1B5G5R5>,
+        MortonCopy<true, PixelFormat::R8>,
+        MortonCopy<true, PixelFormat::R8UI>,
+        MortonCopy<true, PixelFormat::RGBA16F>,
+        MortonCopy<true, PixelFormat::RGBA16UI>,
+        MortonCopy<true, PixelFormat::R11FG11FB10F>,
+        MortonCopy<true, PixelFormat::RGBA32UI>,
+        MortonCopy<true, PixelFormat::DXT1>,
+        MortonCopy<true, PixelFormat::DXT23>,
+        MortonCopy<true, PixelFormat::DXT45>,
+        MortonCopy<true, PixelFormat::DXN1>,
+        MortonCopy<true, PixelFormat::DXN2UNORM>,
+        MortonCopy<true, PixelFormat::DXN2SNORM>,
+        MortonCopy<true, PixelFormat::BC7U>,
+        MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
+        MortonCopy<true, PixelFormat::G8R8>,
+        MortonCopy<true, PixelFormat::BGRA8>,
+        MortonCopy<true, PixelFormat::RGBA32F>,
+        MortonCopy<true, PixelFormat::RG32F>,
+        MortonCopy<true, PixelFormat::R32F>,
+        MortonCopy<true, PixelFormat::R16F>,
+        MortonCopy<true, PixelFormat::R16UNORM>,
+        MortonCopy<true, PixelFormat::R16S>,
+        MortonCopy<true, PixelFormat::R16UI>,
+        MortonCopy<true, PixelFormat::R16I>,
+        MortonCopy<true, PixelFormat::RG16>,
+        MortonCopy<true, PixelFormat::RG16F>,
+        MortonCopy<true, PixelFormat::RG16UI>,
+        MortonCopy<true, PixelFormat::RG16I>,
+        MortonCopy<true, PixelFormat::RG16S>,
+        MortonCopy<true, PixelFormat::RGB32F>,
+        MortonCopy<true, PixelFormat::SRGBA8>,
+        MortonCopy<true, PixelFormat::RG8U>,
+        MortonCopy<true, PixelFormat::RG8S>,
+        MortonCopy<true, PixelFormat::Z24S8>,
+        MortonCopy<true, PixelFormat::S8Z24>,
+        MortonCopy<true, PixelFormat::Z32F>,
+        MortonCopy<true, PixelFormat::Z16>,
         MortonCopy<true, PixelFormat::Z32FS8>,
+        // clang-format on
 };
 
-static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
+static constexpr std::array<void (*)(u32, u32, u32, std::vector<u8>&, Tegra::GPUVAddr),
                             SurfaceParams::MaxPixelFormat>
     gl_to_morton_fns = {
-        MortonCopy<false, PixelFormat::ABGR8>,
+        // clang-format off
+        MortonCopy<false, PixelFormat::ABGR8U>,
+        MortonCopy<false, PixelFormat::ABGR8S>,
         MortonCopy<false, PixelFormat::B5G6R5>,
         MortonCopy<false, PixelFormat::A2B10G10R10>,
         MortonCopy<false, PixelFormat::A1B5G5R5>,
         MortonCopy<false, PixelFormat::R8>,
+        MortonCopy<false, PixelFormat::R8UI>,
         MortonCopy<false, PixelFormat::RGBA16F>,
+        MortonCopy<false, PixelFormat::RGBA16UI>,
         MortonCopy<false, PixelFormat::R11FG11FB10F>,
         MortonCopy<false, PixelFormat::RGBA32UI>,
-        // TODO(Subv): Swizzling DXT1/DXT23/DXT45/DXN1/BC7U/ASTC_2D_4X4 formats is not supported
+        // TODO(Subv): Swizzling DXT1/DXT23/DXT45/DXN1/DXN2/BC7U/ASTC_2D_4X4 formats is not
+        // supported
+        nullptr,
+        nullptr,
         nullptr,
         nullptr,
         nullptr,
@@ -256,6 +315,9 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<false, PixelFormat::R32F>,
         MortonCopy<false, PixelFormat::R16F>,
         MortonCopy<false, PixelFormat::R16UNORM>,
+        MortonCopy<false, PixelFormat::R16S>,
+        MortonCopy<false, PixelFormat::R16UI>,
+        MortonCopy<false, PixelFormat::R16I>,
         MortonCopy<false, PixelFormat::RG16>,
         MortonCopy<false, PixelFormat::RG16F>,
         MortonCopy<false, PixelFormat::RG16UI>,
@@ -263,11 +325,14 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<false, PixelFormat::RG16S>,
         MortonCopy<false, PixelFormat::RGB32F>,
         MortonCopy<false, PixelFormat::SRGBA8>,
+        MortonCopy<false, PixelFormat::RG8U>,
+        MortonCopy<false, PixelFormat::RG8S>,
         MortonCopy<false, PixelFormat::Z24S8>,
         MortonCopy<false, PixelFormat::S8Z24>,
         MortonCopy<false, PixelFormat::Z32F>,
         MortonCopy<false, PixelFormat::Z16>,
         MortonCopy<false, PixelFormat::Z32FS8>,
+        // clang-format on
 };
 
 // Allocate an uninitialized texture of appropriate size and format for the surface
@@ -447,22 +512,24 @@ MICROPROFILE_DEFINE(OpenGL_SurfaceLoad, "OpenGL", "Surface Load", MP_RGB(128, 64
 void CachedSurface::LoadGLBuffer() {
     ASSERT(params.type != SurfaceType::Fill);
 
-    u8* const texture_src_data = Memory::GetPointer(params.GetCpuAddr());
+    const u8* const texture_src_data = Memory::GetPointer(params.GetCpuAddr());
 
     ASSERT(texture_src_data);
 
-    gl_buffer.resize(params.width * params.height * GetGLBytesPerPixel(params.pixel_format));
+    const u32 bytes_per_pixel = GetGLBytesPerPixel(params.pixel_format);
+    const u32 copy_size = params.width * params.height * bytes_per_pixel;
 
     MICROPROFILE_SCOPE(OpenGL_SurfaceLoad);
 
-    if (!params.is_tiled) {
-        const u32 bytes_per_pixel{params.GetFormatBpp() >> 3};
+    if (params.is_tiled) {
+        gl_buffer.resize(copy_size);
 
-        std::memcpy(gl_buffer.data(), texture_src_data,
-                    bytes_per_pixel * params.width * params.height);
-    } else {
         morton_to_gl_fns[static_cast<size_t>(params.pixel_format)](
-            params.width, params.block_height, params.height, gl_buffer.data(), params.addr);
+            params.width, params.block_height, params.height, gl_buffer, params.addr);
+    } else {
+        const u8* const texture_src_data_end = texture_src_data + copy_size;
+
+        gl_buffer.assign(texture_src_data, texture_src_data_end);
     }
 
     ConvertFormatAsNeeded_LoadGLBuffer(gl_buffer, params.pixel_format, params.width, params.height);
@@ -485,7 +552,7 @@ void CachedSurface::FlushGLBuffer() {
         std::memcpy(dst_buffer, gl_buffer.data(), params.size_in_bytes);
     } else {
         gl_to_morton_fns[static_cast<size_t>(params.pixel_format)](
-            params.width, params.block_height, params.height, gl_buffer.data(), params.addr);
+            params.width, params.block_height, params.height, gl_buffer, params.addr);
     }
 }
 
@@ -600,8 +667,8 @@ Surface RasterizerCacheOpenGL::GetTextureSurface(const Tegra::Texture::FullTextu
     return GetSurface(SurfaceParams::CreateForTexture(config));
 }
 
-SurfaceSurfaceRect_Tuple RasterizerCacheOpenGL::GetFramebufferSurfaces(
-    bool using_color_fb, bool using_depth_fb, const MathUtil::Rectangle<s32>& viewport) {
+SurfaceSurfaceRect_Tuple RasterizerCacheOpenGL::GetFramebufferSurfaces(bool using_color_fb,
+                                                                       bool using_depth_fb) {
     const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
 
     // TODO(bunnei): This is hard corded to use just the first render buffer
@@ -757,10 +824,12 @@ void RasterizerCacheOpenGL::FlushRegion(Tegra::GPUVAddr /*addr*/, size_t /*size*
 }
 
 void RasterizerCacheOpenGL::InvalidateRegion(Tegra::GPUVAddr addr, size_t size) {
-    for (const auto& pair : surface_cache) {
-        const auto& surface{pair.second};
+    for (auto iter = surface_cache.cbegin(); iter != surface_cache.cend();) {
+        const auto& surface{iter->second};
         const auto& params{surface->GetSurfaceParams()};
 
+        ++iter;
+
         if (params.IsOverlappingRegion(addr, size)) {
             UnregisterSurface(surface);
         }

src/video_core/renderer_opengl/gl_rasterizer_cache.h

@@ -23,43 +23,53 @@ using PageMap = boost::icl::interval_map<u64, int>;
 
 struct SurfaceParams {
     enum class PixelFormat {
-        ABGR8 = 0,
-        B5G6R5 = 1,
-        A2B10G10R10 = 2,
-        A1B5G5R5 = 3,
-        R8 = 4,
-        RGBA16F = 5,
-        R11FG11FB10F = 6,
-        RGBA32UI = 7,
-        DXT1 = 8,
-        DXT23 = 9,
-        DXT45 = 10,
-        DXN1 = 11, // This is also known as BC4
-        BC7U = 12,
-        ASTC_2D_4X4 = 13,
-        G8R8 = 14,
-        BGRA8 = 15,
-        RGBA32F = 16,
-        RG32F = 17,
-        R32F = 18,
-        R16F = 19,
-        R16UNORM = 20,
-        RG16 = 21,
-        RG16F = 22,
-        RG16UI = 23,
-        RG16I = 24,
-        RG16S = 25,
-        RGB32F = 26,
-        SRGBA8 = 27,
+        ABGR8U = 0,
+        ABGR8S = 1,
+        B5G6R5 = 2,
+        A2B10G10R10 = 3,
+        A1B5G5R5 = 4,
+        R8 = 5,
+        R8UI = 6,
+        RGBA16F = 7,
+        RGBA16UI = 8,
+        R11FG11FB10F = 9,
+        RGBA32UI = 10,
+        DXT1 = 11,
+        DXT23 = 12,
+        DXT45 = 13,
+        DXN1 = 14, // This is also known as BC4
+        DXN2UNORM = 15,
+        DXN2SNORM = 16,
+        BC7U = 17,
+        ASTC_2D_4X4 = 18,
+        G8R8 = 19,
+        BGRA8 = 20,
+        RGBA32F = 21,
+        RG32F = 22,
+        R32F = 23,
+        R16F = 24,
+        R16UNORM = 25,
+        R16S = 26,
+        R16UI = 27,
+        R16I = 28,
+        RG16 = 29,
+        RG16F = 30,
+        RG16UI = 31,
+        RG16I = 32,
+        RG16S = 33,
+        RGB32F = 34,
+        SRGBA8 = 35,
+        RG8U = 36,
+        RG8S = 37,
 
         MaxColorFormat,
 
         // DepthStencil formats
-        Z24S8 = 28,
-        S8Z24 = 29,
-        Z32F = 30,
-        Z16 = 31,
-        Z32FS8 = 32,
+        Z24S8 = 38,
+        S8Z24 = 39,
+        Z32F = 40,
+        Z16 = 41,
+        Z32FS8 = 42,
 
         MaxDepthStencilFormat,
 
@@ -97,18 +107,23 @@ struct SurfaceParams {
             return 0;
 
         constexpr std::array<u32, MaxPixelFormat> compression_factor_table = {{
-            1, // ABGR8
+            1, // ABGR8U
+            1, // ABGR8S
             1, // B5G6R5
             1, // A2B10G10R10
             1, // A1B5G5R5
             1, // R8
+            1, // R8UI
             1, // RGBA16F
+            1, // RGBA16UI
             1, // R11FG11FB10F
             1, // RGBA32UI
             4, // DXT1
             4, // DXT23
             4, // DXT45
             4, // DXN1
+            4, // DXN2UNORM
+            4, // DXN2SNORM
             4, // BC7U
             4, // ASTC_2D_4X4
             1, // G8R8
@@ -118,6 +133,9 @@ struct SurfaceParams {
             1, // R32F
             1, // R16F
             1, // R16UNORM
+            1, // R16S
+            1, // R16UI
+            1, // R16I
             1, // RG16
             1, // RG16F
             1, // RG16UI
@@ -125,6 +143,8 @@ struct SurfaceParams {
             1, // RG16S
             1, // RGB32F
             1, // SRGBA8
+            1, // RG8U
+            1, // RG8S
             1, // Z24S8
             1, // S8Z24
             1, // Z32F
@@ -141,18 +161,23 @@ struct SurfaceParams {
             return 0;
 
         constexpr std::array<u32, MaxPixelFormat> bpp_table = {{
-            32,  // ABGR8
+            32,  // ABGR8U
+            32,  // ABGR8S
             16,  // B5G6R5
             32,  // A2B10G10R10
             16,  // A1B5G5R5
             8,   // R8
+            8,   // R8UI
             64,  // RGBA16F
+            64,  // RGBA16UI
             32,  // R11FG11FB10F
             128, // RGBA32UI
             64,  // DXT1
             128, // DXT23
             128, // DXT45
             64,  // DXN1
+            128, // DXN2UNORM
+            128, // DXN2SNORM
             128, // BC7U
             32,  // ASTC_2D_4X4
             16,  // G8R8
@@ -162,6 +187,9 @@ struct SurfaceParams {
             32,  // R32F
             16,  // R16F
             16,  // R16UNORM
+            16,  // R16S
+            16,  // R16UI
+            16,  // R16I
             32,  // RG16
             32,  // RG16F
             32,  // RG16UI
@@ -169,6 +197,8 @@ struct SurfaceParams {
             32,  // RG16S
             96,  // RGB32F
             32,  // SRGBA8
+            16,  // RG8U
+            16,  // RG8S
             32,  // Z24S8
             32,  // S8Z24
             32,  // Z32F
@@ -208,23 +238,31 @@ struct SurfaceParams {
         // gamma.
         case Tegra::RenderTargetFormat::RGBA8_SRGB:
         case Tegra::RenderTargetFormat::RGBA8_UNORM:
-            return PixelFormat::ABGR8;
+            return PixelFormat::ABGR8U;
+        case Tegra::RenderTargetFormat::RGBA8_SNORM:
+            return PixelFormat::ABGR8S;
         case Tegra::RenderTargetFormat::BGRA8_UNORM:
             return PixelFormat::BGRA8;
         case Tegra::RenderTargetFormat::RGB10_A2_UNORM:
             return PixelFormat::A2B10G10R10;
         case Tegra::RenderTargetFormat::RGBA16_FLOAT:
             return PixelFormat::RGBA16F;
+        case Tegra::RenderTargetFormat::RGBA16_UINT:
+            return PixelFormat::RGBA16UI;
         case Tegra::RenderTargetFormat::RGBA32_FLOAT:
             return PixelFormat::RGBA32F;
         case Tegra::RenderTargetFormat::RG32_FLOAT:
             return PixelFormat::RG32F;
         case Tegra::RenderTargetFormat::R11G11B10_FLOAT:
             return PixelFormat::R11FG11FB10F;
+        case Tegra::RenderTargetFormat::B5G6R5_UNORM:
+            return PixelFormat::B5G6R5;
         case Tegra::RenderTargetFormat::RGBA32_UINT:
             return PixelFormat::RGBA32UI;
         case Tegra::RenderTargetFormat::R8_UNORM:
             return PixelFormat::R8;
+        case Tegra::RenderTargetFormat::R8_UINT:
+            return PixelFormat::R8UI;
         case Tegra::RenderTargetFormat::RG16_FLOAT:
             return PixelFormat::RG16F;
         case Tegra::RenderTargetFormat::RG16_UINT:
@@ -235,8 +273,20 @@ struct SurfaceParams {
             return PixelFormat::RG16;
         case Tegra::RenderTargetFormat::RG16_SNORM:
             return PixelFormat::RG16S;
+        case Tegra::RenderTargetFormat::RG8_UNORM:
+            return PixelFormat::RG8U;
+        case Tegra::RenderTargetFormat::RG8_SNORM:
+            return PixelFormat::RG8S;
         case Tegra::RenderTargetFormat::R16_FLOAT:
             return PixelFormat::R16F;
+        case Tegra::RenderTargetFormat::R16_UNORM:
+            return PixelFormat::R16UNORM;
+        case Tegra::RenderTargetFormat::R16_SNORM:
+            return PixelFormat::R16S;
+        case Tegra::RenderTargetFormat::R16_UINT:
+            return PixelFormat::R16UI;
+        case Tegra::RenderTargetFormat::R16_SINT:
+            return PixelFormat::R16I;
         case Tegra::RenderTargetFormat::R32_FLOAT:
             return PixelFormat::R32F;
         default:
@@ -250,7 +300,15 @@ struct SurfaceParams {
         // TODO(Subv): Properly implement this
         switch (format) {
         case Tegra::Texture::TextureFormat::A8R8G8B8:
-            return PixelFormat::ABGR8;
+            switch (component_type) {
+            case Tegra::Texture::ComponentType::UNORM:
+                return PixelFormat::ABGR8U;
+            case Tegra::Texture::ComponentType::SNORM:
+                return PixelFormat::ABGR8S;
+            }
+            LOG_CRITICAL(HW_GPU, "Unimplemented component_type={}",
+                         static_cast<u32>(component_type));
+            UNREACHABLE();
         case Tegra::Texture::TextureFormat::B5G6R5:
             return PixelFormat::B5G6R5;
         case Tegra::Texture::TextureFormat::A2B10G10R10:
@@ -258,7 +316,15 @@ struct SurfaceParams {
         case Tegra::Texture::TextureFormat::A1B5G5R5:
             return PixelFormat::A1B5G5R5;
         case Tegra::Texture::TextureFormat::R8:
-            return PixelFormat::R8;
+            switch (component_type) {
+            case Tegra::Texture::ComponentType::UNORM:
+                return PixelFormat::R8;
+            case Tegra::Texture::ComponentType::UINT:
+                return PixelFormat::R8UI;
+            }
+            LOG_CRITICAL(HW_GPU, "Unimplemented component_type={}",
+                         static_cast<u32>(component_type));
+            UNREACHABLE();
         case Tegra::Texture::TextureFormat::G8R8:
             return PixelFormat::G8R8;
         case Tegra::Texture::TextureFormat::R16_G16_B16_A16:
@@ -285,6 +351,12 @@ struct SurfaceParams {
                 return PixelFormat::R16F;
             case Tegra::Texture::ComponentType::UNORM:
                 return PixelFormat::R16UNORM;
+            case Tegra::Texture::ComponentType::SNORM:
+                return PixelFormat::R16S;
+            case Tegra::Texture::ComponentType::UINT:
+                return PixelFormat::R16UI;
+            case Tegra::Texture::ComponentType::SINT:
+                return PixelFormat::R16I;
             }
             LOG_CRITICAL(HW_GPU, "Unimplemented component_type={}",
                          static_cast<u32>(component_type));
@@ -303,6 +375,16 @@ struct SurfaceParams {
             return PixelFormat::DXT45;
         case Tegra::Texture::TextureFormat::DXN1:
             return PixelFormat::DXN1;
+        case Tegra::Texture::TextureFormat::DXN2:
+            switch (component_type) {
+            case Tegra::Texture::ComponentType::UNORM:
+                return PixelFormat::DXN2UNORM;
+            case Tegra::Texture::ComponentType::SNORM:
+                return PixelFormat::DXN2SNORM;
+            }
+            LOG_CRITICAL(HW_GPU, "Unimplemented component_type={}",
+                         static_cast<u32>(component_type));
+            UNREACHABLE();
         case Tegra::Texture::TextureFormat::BC7U:
             return PixelFormat::BC7U;
         case Tegra::Texture::TextureFormat::ASTC_2D_4X4:
@@ -330,89 +412,6 @@ struct SurfaceParams {
         }
     }
 
-    static Tegra::Texture::TextureFormat TextureFormatFromPixelFormat(PixelFormat format) {
-        // TODO(Subv): Properly implement this
-        switch (format) {
-        case PixelFormat::ABGR8:
-        case PixelFormat::SRGBA8:
-            return Tegra::Texture::TextureFormat::A8R8G8B8;
-        case PixelFormat::B5G6R5:
-            return Tegra::Texture::TextureFormat::B5G6R5;
-        case PixelFormat::A2B10G10R10:
-            return Tegra::Texture::TextureFormat::A2B10G10R10;
-        case PixelFormat::A1B5G5R5:
-            return Tegra::Texture::TextureFormat::A1B5G5R5;
-        case PixelFormat::R8:
-            return Tegra::Texture::TextureFormat::R8;
-        case PixelFormat::G8R8:
-            return Tegra::Texture::TextureFormat::G8R8;
-        case PixelFormat::RGBA16F:
-            return Tegra::Texture::TextureFormat::R16_G16_B16_A16;
-        case PixelFormat::R11FG11FB10F:
-            return Tegra::Texture::TextureFormat::BF10GF11RF11;
-        case PixelFormat::RGBA32UI:
-            return Tegra::Texture::TextureFormat::R32_G32_B32_A32;
-        case PixelFormat::DXT1:
-            return Tegra::Texture::TextureFormat::DXT1;
-        case PixelFormat::DXT23:
-            return Tegra::Texture::TextureFormat::DXT23;
-        case PixelFormat::DXT45:
-            return Tegra::Texture::TextureFormat::DXT45;
-        case PixelFormat::DXN1:
-            return Tegra::Texture::TextureFormat::DXN1;
-        case PixelFormat::BC7U:
-            return Tegra::Texture::TextureFormat::BC7U;
-        case PixelFormat::ASTC_2D_4X4:
-            return Tegra::Texture::TextureFormat::ASTC_2D_4X4;
-        case PixelFormat::BGRA8:
-            // TODO(bunnei): This is fine for unswizzling (since we just need the right component
-            // sizes), but could be a bug if we used this function in different ways.
-            return Tegra::Texture::TextureFormat::A8R8G8B8;
-        case PixelFormat::RGBA32F:
-            return Tegra::Texture::TextureFormat::R32_G32_B32_A32;
-        case PixelFormat::RGB32F:
-            return Tegra::Texture::TextureFormat::R32_G32_B32;
-        case PixelFormat::RG32F:
-            return Tegra::Texture::TextureFormat::R32_G32;
-        case PixelFormat::R32F:
-            return Tegra::Texture::TextureFormat::R32;
-        case PixelFormat::R16F:
-        case PixelFormat::R16UNORM:
-            return Tegra::Texture::TextureFormat::R16;
-        case PixelFormat::Z32F:
-            return Tegra::Texture::TextureFormat::ZF32;
-        case PixelFormat::Z24S8:
-            return Tegra::Texture::TextureFormat::Z24S8;
-        case PixelFormat::RG16F:
-        case PixelFormat::RG16:
-        case PixelFormat::RG16UI:
-        case PixelFormat::RG16I:
-        case PixelFormat::RG16S:
-            return Tegra::Texture::TextureFormat::R16_G16;
-        default:
-            LOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
-            UNREACHABLE();
-        }
-    }
-
-    static Tegra::DepthFormat DepthFormatFromPixelFormat(PixelFormat format) {
-        switch (format) {
-        case PixelFormat::S8Z24:
-            return Tegra::DepthFormat::S8_Z24_UNORM;
-        case PixelFormat::Z24S8:
-            return Tegra::DepthFormat::Z24_S8_UNORM;
-        case PixelFormat::Z32F:
-            return Tegra::DepthFormat::Z32_FLOAT;
-        case PixelFormat::Z16:
-            return Tegra::DepthFormat::Z16_UNORM;
-        case PixelFormat::Z32FS8:
-            return Tegra::DepthFormat::Z32_S8_X24_FLOAT;
-        default:
-            LOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
-            UNREACHABLE();
-        }
-    }
-
     static ComponentType ComponentTypeFromTexture(Tegra::Texture::ComponentType type) {
         // TODO(Subv): Implement more component types
         switch (type) {
@@ -441,8 +440,14 @@ struct SurfaceParams {
         case Tegra::RenderTargetFormat::RGB10_A2_UNORM:
         case Tegra::RenderTargetFormat::R8_UNORM:
         case Tegra::RenderTargetFormat::RG16_UNORM:
+        case Tegra::RenderTargetFormat::R16_UNORM:
+        case Tegra::RenderTargetFormat::B5G6R5_UNORM:
+        case Tegra::RenderTargetFormat::RG8_UNORM:
             return ComponentType::UNorm;
+        case Tegra::RenderTargetFormat::RGBA8_SNORM:
         case Tegra::RenderTargetFormat::RG16_SNORM:
+        case Tegra::RenderTargetFormat::R16_SNORM:
+        case Tegra::RenderTargetFormat::RG8_SNORM:
             return ComponentType::SNorm;
         case Tegra::RenderTargetFormat::RGBA16_FLOAT:
         case Tegra::RenderTargetFormat::R11G11B10_FLOAT:
@@ -453,9 +458,13 @@ struct SurfaceParams {
         case Tegra::RenderTargetFormat::R32_FLOAT:
             return ComponentType::Float;
         case Tegra::RenderTargetFormat::RGBA32_UINT:
+        case Tegra::RenderTargetFormat::RGBA16_UINT:
         case Tegra::RenderTargetFormat::RG16_UINT:
+        case Tegra::RenderTargetFormat::R8_UINT:
+        case Tegra::RenderTargetFormat::R16_UINT:
             return ComponentType::UInt;
         case Tegra::RenderTargetFormat::RG16_SINT:
+        case Tegra::RenderTargetFormat::R16_SINT:
             return ComponentType::SInt;
         default:
             LOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
@@ -466,7 +475,7 @@ struct SurfaceParams {
     static PixelFormat PixelFormatFromGPUPixelFormat(Tegra::FramebufferConfig::PixelFormat format) {
         switch (format) {
         case Tegra::FramebufferConfig::PixelFormat::ABGR8:
-            return PixelFormat::ABGR8;
+            return PixelFormat::ABGR8U;
         default:
             LOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
             UNREACHABLE();
@@ -612,8 +621,7 @@ public:
     Surface GetTextureSurface(const Tegra::Texture::FullTextureInfo& config);
 
     /// Get the color and depth surfaces based on the framebuffer configuration
-    SurfaceSurfaceRect_Tuple GetFramebufferSurfaces(bool using_color_fb, bool using_depth_fb,
-                                                    const MathUtil::Rectangle<s32>& viewport);
+    SurfaceSurfaceRect_Tuple GetFramebufferSurfaces(bool using_color_fb, bool using_depth_fb);
 
     /// Flushes the surface to Switch memory
     void FlushSurface(const Surface& surface);

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -141,6 +141,15 @@ private:
                     ExitMethod jmp = Scan(target, end, labels);
                     return exit_method = ParallelExit(no_jmp, jmp);
                 }
+                case OpCode::Id::SSY: {
+                    // The SSY instruction uses a similar encoding as the BRA instruction.
+                    ASSERT_MSG(instr.bra.constant_buffer == 0,
+                               "Constant buffer SSY is not supported");
+                    u32 target = offset + instr.bra.GetBranchTarget();
+                    labels.insert(target);
+                    // Continue scanning for an exit method.
+                    break;
+                }
                 }
             }
         }
@@ -347,9 +356,14 @@ public:
      * @param reg The register to use as the source value.
      */
     void SetOutputAttributeToRegister(Attribute::Index attribute, u64 elem, const Register& reg) {
-        std::string dest = GetOutputAttribute(attribute) + GetSwizzle(elem);
+        std::string dest = GetOutputAttribute(attribute);
         std::string src = GetRegisterAsFloat(reg);
-        shader.AddLine(dest + " = " + src + ';');
+
+        if (!dest.empty()) {
+            // Can happen with unknown/unimplemented output attributes, in which case we ignore the
+            // instruction for now.
+            shader.AddLine(dest + GetSwizzle(elem) + " = " + src + ';');
+        }
     }
 
     /// Generates code representing a uniform (C buffer) register, interpreted as the input type.
@@ -362,6 +376,8 @@ public:
             return value;
         } else if (type == GLSLRegister::Type::Integer) {
             return "floatBitsToInt(" + value + ')';
+        } else if (type == GLSLRegister::Type::UnsignedInteger) {
+            return "floatBitsToUint(" + value + ')';
         } else {
             UNREACHABLE();
         }
@@ -507,6 +523,8 @@ private:
 
     /// Build the GLSL register list.
     void BuildRegisterList() {
+        regs.reserve(Register::NumRegisters);
+
         for (size_t index = 0; index < Register::NumRegisters; ++index) {
             regs.emplace_back(index, suffix);
         }
@@ -523,20 +541,16 @@ private:
             // shader.
             ASSERT(stage == Maxwell3D::Regs::ShaderStage::Vertex);
             return "vec4(0, 0, uintBitsToFloat(gl_InstanceID), uintBitsToFloat(gl_VertexID))";
-        case Attribute::Index::Unknown_63:
-            // TODO(bunnei): Figure out what this is used for. Super Mario Odyssey uses this.
-            LOG_CRITICAL(HW_GPU, "Unhandled input attribute Unknown_63");
-            UNREACHABLE();
-            break;
         default:
             const u32 index{static_cast<u32>(attribute) -
                             static_cast<u32>(Attribute::Index::Attribute_0)};
-            if (attribute >= Attribute::Index::Attribute_0) {
+            if (attribute >= Attribute::Index::Attribute_0 &&
+                attribute <= Attribute::Index::Attribute_31) {
                 declr_input_attribute.insert(attribute);
                 return "input_attribute_" + std::to_string(index);
             }
 
-            LOG_CRITICAL(HW_GPU, "Unhandled input attribute: {}", index);
+            LOG_CRITICAL(HW_GPU, "Unhandled input attribute: {}", static_cast<u32>(attribute));
             UNREACHABLE();
         }
 
@@ -558,6 +572,7 @@ private:
 
             LOG_CRITICAL(HW_GPU, "Unhandled output attribute: {}", index);
             UNREACHABLE();
+            return {};
         }
     }
 
@@ -657,16 +672,17 @@ private:
      * @param instr Instruction to generate the if condition for.
      * @returns string containing the predicate condition.
      */
-    std::string GetPredicateCondition(u64 index, bool negate) const {
+    std::string GetPredicateCondition(u64 index, bool negate) {
         using Tegra::Shader::Pred;
         std::string variable;
 
         // Index 7 is used as an 'Always True' condition.
-        if (index == static_cast<u64>(Pred::UnusedIndex))
+        if (index == static_cast<u64>(Pred::UnusedIndex)) {
             variable = "true";
-        else
+        } else {
             variable = 'p' + std::to_string(index) + '_' + suffix;
-
+            declr_predicates.insert(variable);
+        }
         if (negate) {
             return "!(" + variable + ')';
         }
@@ -825,7 +841,11 @@ private:
         ASSERT_MSG(instr.pred.full_pred != Pred::NeverExecute,
                    "NeverExecute predicate not implemented");
 
-        if (instr.pred.pred_index != static_cast<u64>(Pred::UnusedIndex)) {
+        // Some instructions (like SSY) don't have a predicate field, they are always
+        // unconditionally executed.
+        bool can_be_predicated = OpCode::IsPredicatedInstruction(opcode->GetId());
+
+        if (can_be_predicated && instr.pred.pred_index != static_cast<u64>(Pred::UnusedIndex)) {
             shader.AddLine("if (" +
                            GetPredicateCondition(instr.pred.pred_index, instr.negate_pred != 0) +
                            ')');
@@ -1612,6 +1632,99 @@ private:
             }
             break;
         }
+        case OpCode::Type::Xmad: {
+            ASSERT_MSG(!instr.xmad.sign_a, "Unimplemented");
+            ASSERT_MSG(!instr.xmad.sign_b, "Unimplemented");
+
+            std::string op_a{regs.GetRegisterAsInteger(instr.gpr8, 0, instr.xmad.sign_a)};
+            std::string op_b;
+            std::string op_c;
+
+            // TODO(bunnei): Needs to be fixed once op_a or op_b is signed
+            ASSERT_MSG(instr.xmad.sign_a == instr.xmad.sign_b, "Unimplemented");
+            const bool is_signed{instr.xmad.sign_a == 1};
+
+            bool is_merge{};
+            switch (opcode->GetId()) {
+            case OpCode::Id::XMAD_CR: {
+                is_merge = instr.xmad.merge_56;
+                op_b += regs.GetUniform(instr.cbuf34.index, instr.cbuf34.offset,
+                                        instr.xmad.sign_b ? GLSLRegister::Type::Integer
+                                                          : GLSLRegister::Type::UnsignedInteger);
+                op_c += regs.GetRegisterAsInteger(instr.gpr39, 0, is_signed);
+                break;
+            }
+            case OpCode::Id::XMAD_RR: {
+                is_merge = instr.xmad.merge_37;
+                op_b += regs.GetRegisterAsInteger(instr.gpr20, 0, instr.xmad.sign_b);
+                op_c += regs.GetRegisterAsInteger(instr.gpr39, 0, is_signed);
+                break;
+            }
+            case OpCode::Id::XMAD_RC: {
+                op_b += regs.GetRegisterAsInteger(instr.gpr39, 0, instr.xmad.sign_b);
+                op_c += regs.GetUniform(instr.cbuf34.index, instr.cbuf34.offset,
+                                        is_signed ? GLSLRegister::Type::Integer
+                                                  : GLSLRegister::Type::UnsignedInteger);
+                break;
+            }
+            case OpCode::Id::XMAD_IMM: {
+                is_merge = instr.xmad.merge_37;
+                op_b += std::to_string(instr.xmad.imm20_16);
+                op_c += regs.GetRegisterAsInteger(instr.gpr39, 0, is_signed);
+                break;
+            }
+            default: {
+                LOG_CRITICAL(HW_GPU, "Unhandled XMAD instruction: {}", opcode->GetName());
+                UNREACHABLE();
+            }
+            }
+
+            // TODO(bunnei): Ensure this is right with signed operands
+            if (instr.xmad.high_a) {
+                op_a = "((" + op_a + ") >> 16)";
+            } else {
+                op_a = "((" + op_a + ") & 0xFFFF)";
+            }
+
+            std::string src2 = '(' + op_b + ')'; // Preserve original source 2
+            if (instr.xmad.high_b) {
+                op_b = '(' + src2 + " >> 16)";
+            } else {
+                op_b = '(' + src2 + " & 0xFFFF)";
+            }
+
+            std::string product = '(' + op_a + " * " + op_b + ')';
+            if (instr.xmad.product_shift_left) {
+                product = '(' + product + " << 16)";
+            }
+
+            switch (instr.xmad.mode) {
+            case Tegra::Shader::XmadMode::None:
+                break;
+            case Tegra::Shader::XmadMode::CLo:
+                op_c = "((" + op_c + ") & 0xFFFF)";
+                break;
+            case Tegra::Shader::XmadMode::CHi:
+                op_c = "((" + op_c + ") >> 16)";
+                break;
+            case Tegra::Shader::XmadMode::CBcc:
+                op_c = "((" + op_c + ") + (" + src2 + "<< 16))";
+                break;
+            default: {
+                LOG_CRITICAL(HW_GPU, "Unhandled XMAD mode: {}",
+                             static_cast<u32>(instr.xmad.mode.Value()));
+                UNREACHABLE();
+            }
+            }
+
+            std::string sum{'(' + product + " + " + op_c + ')'};
+            if (is_merge) {
+                sum = "((" + sum + " & 0xFFFF) | (" + src2 + "<< 16))";
+            }
+
+            regs.SetRegisterToInteger(instr.gpr0, is_signed, 0, sum, 1, 1);
+            break;
+        }
         default: {
             switch (opcode->GetId()) {
             case OpCode::Id::EXIT: {
@@ -1649,7 +1762,15 @@ private:
             }
             case OpCode::Id::KIL: {
                 ASSERT(instr.flow.cond == Tegra::Shader::FlowCondition::Always);
+
+                // Enclose "discard" in a conditional, so that GLSL compilation does not complain
+                // about unexecuted instructions that may follow this.
+                shader.AddLine("if (true) {");
+                ++shader.scope;
                 shader.AddLine("discard;");
+                --shader.scope;
+                shader.AddLine("}");
+
                 break;
             }
             case OpCode::Id::BRA: {
@@ -1665,16 +1786,25 @@ private:
                 break;
             }
             case OpCode::Id::SSY: {
-                // The SSY opcode tells the GPU where to re-converge divergent execution paths, we
-                // can ignore this when generating GLSL code.
+                // The SSY opcode tells the GPU where to re-converge divergent execution paths, it
+                // sets the target of the jump that the SYNC instruction will make. The SSY opcode
+                // has a similar structure to the BRA opcode.
+                ASSERT_MSG(instr.bra.constant_buffer == 0, "Constant buffer SSY is not supported");
+
+                u32 target = offset + instr.bra.GetBranchTarget();
+                shader.AddLine("ssy_target = " + std::to_string(target) + "u;");
                 break;
             }
-            case OpCode::Id::SYNC:
+            case OpCode::Id::SYNC: {
+                // The SYNC opcode jumps to the address previously set by the SSY opcode
                 ASSERT(instr.flow.cond == Tegra::Shader::FlowCondition::Always);
+                shader.AddLine("{ jmp_to = ssy_target; break; }");
+                break;
+            }
             case OpCode::Id::DEPBAR: {
-                // TODO(Subv): Find out if we actually have to care about these instructions or if
+                // TODO(Subv): Find out if we actually have to care about this instruction or if
                 // the GLSL compiler takes care of that for us.
-                LOG_WARNING(HW_GPU, "DEPBAR/SYNC instruction is stubbed");
+                LOG_WARNING(HW_GPU, "DEPBAR instruction is stubbed");
                 break;
             }
             default: {
@@ -1688,7 +1818,7 @@ private:
         }
 
         // Close the predicate condition scope.
-        if (instr.pred.pred_index != static_cast<u64>(Pred::UnusedIndex)) {
+        if (can_be_predicated && instr.pred.pred_index != static_cast<u64>(Pred::UnusedIndex)) {
             --shader.scope;
             shader.AddLine('}');
         }
@@ -1739,6 +1869,7 @@ private:
             } else {
                 labels.insert(subroutine.begin);
                 shader.AddLine("uint jmp_to = " + std::to_string(subroutine.begin) + "u;");
+                shader.AddLine("uint ssy_target = 0u;");
                 shader.AddLine("while (true) {");
                 ++shader.scope;
 
@@ -1754,7 +1885,7 @@ private:
                     u32 compile_end = CompileRange(label, next_label);
                     if (compile_end > next_label && compile_end != PROGRAM_END) {
                         // This happens only when there is a label inside a IF/LOOP block
-                        shader.AddLine("{ jmp_to = " + std::to_string(compile_end) + "u; break; }");
+                        shader.AddLine(" jmp_to = " + std::to_string(compile_end) + "u; break; }");
                         labels.emplace(compile_end);
                     }
 

src/video_core/renderer_opengl/gl_state.cpp

@@ -203,21 +203,6 @@ void OpenGLState::Apply() const {
         }
     }
 
-    // Constbuffers
-    for (std::size_t stage = 0; stage < draw.const_buffers.size(); ++stage) {
-        for (std::size_t buffer_id = 0; buffer_id < draw.const_buffers[stage].size(); ++buffer_id) {
-            const auto& current = cur_state.draw.const_buffers[stage][buffer_id];
-            const auto& new_state = draw.const_buffers[stage][buffer_id];
-
-            if (current.enabled != new_state.enabled || current.bindpoint != new_state.bindpoint ||
-                current.ssbo != new_state.ssbo) {
-                if (new_state.enabled) {
-                    glBindBufferBase(GL_UNIFORM_BUFFER, new_state.bindpoint, new_state.ssbo);
-                }
-            }
-        }
-    }
-
     // Framebuffer
     if (draw.read_framebuffer != cur_state.draw.read_framebuffer) {
         glBindFramebuffer(GL_READ_FRAMEBUFFER, draw.read_framebuffer);

src/video_core/renderer_opengl/gl_state.h

@@ -119,12 +119,6 @@ public:
         GLuint uniform_buffer;   // GL_UNIFORM_BUFFER_BINDING
         GLuint shader_program;   // GL_CURRENT_PROGRAM
         GLuint program_pipeline; // GL_PROGRAM_PIPELINE_BINDING
-        struct ConstBufferConfig {
-            bool enabled = false;
-            GLuint bindpoint;
-            GLuint ssbo;
-        };
-        std::array<std::array<ConstBufferConfig, Regs::MaxConstBuffers>, 5> const_buffers;
     } draw;
 
     struct {

src/video_core/renderer_opengl/gl_stream_buffer.cpp

@@ -9,174 +9,91 @@
 #include "video_core/renderer_opengl/gl_state.h"
 #include "video_core/renderer_opengl/gl_stream_buffer.h"
 
-class OrphanBuffer : public OGLStreamBuffer {
-public:
-    explicit OrphanBuffer(GLenum target) : OGLStreamBuffer(target) {}
-    ~OrphanBuffer() override;
+OGLStreamBuffer::OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent)
+    : gl_target(target), buffer_size(size) {
+    gl_buffer.Create();
+    glBindBuffer(gl_target, gl_buffer.handle);
 
-private:
-    void Create(size_t size, size_t sync_subdivide) override;
-    void Release() override;
+    GLsizeiptr allocate_size = size;
+    if (target == GL_ARRAY_BUFFER) {
+        // On AMD GPU there is a strange crash in indexed drawing. The crash happens when the buffer
+        // read position is near the end and is an out-of-bound access to the vertex buffer. This is
+        // probably a bug in the driver and is related to the usage of vec3<byte> attributes in the
+        // vertex array. Doubling the allocation size for the vertex buffer seems to avoid the
+        // crash.
+        allocate_size *= 2;
+    }
 
-    std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
-    void Unmap() override;
+    if (GLAD_GL_ARB_buffer_storage) {
+        persistent = true;
+        coherent = prefer_coherent;
+        GLbitfield flags =
+            GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | (coherent ? GL_MAP_COHERENT_BIT : 0);
+        glBufferStorage(gl_target, allocate_size, nullptr, flags);
+        mapped_ptr = static_cast<u8*>(glMapBufferRange(
+            gl_target, 0, buffer_size, flags | (coherent ? 0 : GL_MAP_FLUSH_EXPLICIT_BIT)));
+    } else {
+        glBufferData(gl_target, allocate_size, nullptr, GL_STREAM_DRAW);
+    }
+}
 
-    std::vector<u8> data;
-};
-
-class StorageBuffer : public OGLStreamBuffer {
-public:
-    explicit StorageBuffer(GLenum target) : OGLStreamBuffer(target) {}
-    ~StorageBuffer() override;
-
-private:
-    void Create(size_t size, size_t sync_subdivide) override;
-    void Release() override;
-
-    std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) override;
-    void Unmap() override;
-
-    struct Fence {
-        OGLSync sync;
-        size_t offset;
-    };
-    std::deque<Fence> head;
-    std::deque<Fence> tail;
-
-    u8* mapped_ptr;
-};
-
-OGLStreamBuffer::OGLStreamBuffer(GLenum target) {
-    gl_target = target;
+OGLStreamBuffer::~OGLStreamBuffer() {
+    if (persistent) {
+        glBindBuffer(gl_target, gl_buffer.handle);
+        glUnmapBuffer(gl_target);
+    }
+    gl_buffer.Release();
 }
 
 GLuint OGLStreamBuffer::GetHandle() const {
     return gl_buffer.handle;
 }
 
-std::unique_ptr<OGLStreamBuffer> OGLStreamBuffer::MakeBuffer(bool storage_buffer, GLenum target) {
-    if (storage_buffer) {
-        return std::make_unique<StorageBuffer>(target);
-    }
-    return std::make_unique<OrphanBuffer>(target);
+GLsizeiptr OGLStreamBuffer::GetSize() const {
+    return buffer_size;
 }
 
-OrphanBuffer::~OrphanBuffer() {
-    Release();
-}
-
-void OrphanBuffer::Create(size_t size, size_t /*sync_subdivide*/) {
-    buffer_pos = 0;
-    buffer_size = size;
-    data.resize(buffer_size);
-
-    if (gl_buffer.handle == 0) {
-        gl_buffer.Create();
-        glBindBuffer(gl_target, gl_buffer.handle);
-    }
-
-    glBufferData(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr, GL_STREAM_DRAW);
-}
-
-void OrphanBuffer::Release() {
-    gl_buffer.Release();
-}
-
-std::pair<u8*, GLintptr> OrphanBuffer::Map(size_t size, size_t alignment) {
-    buffer_pos = Common::AlignUp(buffer_pos, alignment);
-
-    if (buffer_pos + size > buffer_size) {
-        Create(std::max(buffer_size, size), 0);
-    }
-
-    mapped_size = size;
-    return std::make_pair(&data[buffer_pos], static_cast<GLintptr>(buffer_pos));
-}
-
-void OrphanBuffer::Unmap() {
-    glBufferSubData(gl_target, static_cast<GLintptr>(buffer_pos),
-                    static_cast<GLsizeiptr>(mapped_size), &data[buffer_pos]);
-    buffer_pos += mapped_size;
-}
-
-StorageBuffer::~StorageBuffer() {
-    Release();
-}
-
-void StorageBuffer::Create(size_t size, size_t sync_subdivide) {
-    if (gl_buffer.handle != 0)
-        return;
-
-    buffer_pos = 0;
-    buffer_size = size;
-    buffer_sync_subdivide = std::max<size_t>(sync_subdivide, 1);
-
-    gl_buffer.Create();
-    glBindBuffer(gl_target, gl_buffer.handle);
-
-    glBufferStorage(gl_target, static_cast<GLsizeiptr>(buffer_size), nullptr,
-                    GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
-    mapped_ptr = reinterpret_cast<u8*>(
-        glMapBufferRange(gl_target, 0, static_cast<GLsizeiptr>(buffer_size),
-                         GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_FLUSH_EXPLICIT_BIT));
-}
-
-void StorageBuffer::Release() {
-    if (gl_buffer.handle == 0)
-        return;
-
-    glUnmapBuffer(gl_target);
-
-    gl_buffer.Release();
-    head.clear();
-    tail.clear();
-}
-
-std::pair<u8*, GLintptr> StorageBuffer::Map(size_t size, size_t alignment) {
+std::tuple<u8*, GLintptr, bool> OGLStreamBuffer::Map(GLsizeiptr size, GLintptr alignment) {
     ASSERT(size <= buffer_size);
-
-    OGLSync sync;
-
-    buffer_pos = Common::AlignUp(buffer_pos, alignment);
-    size_t effective_offset = Common::AlignDown(buffer_pos, buffer_sync_subdivide);
-
-    if (!head.empty() &&
-        (effective_offset > head.back().offset || buffer_pos + size > buffer_size)) {
-        ASSERT(head.back().sync.handle == 0);
-        head.back().sync.Create();
-    }
-
-    if (buffer_pos + size > buffer_size) {
-        if (!tail.empty()) {
-            std::swap(sync, tail.back().sync);
-            tail.clear();
-        }
-        std::swap(tail, head);
-        buffer_pos = 0;
-        effective_offset = 0;
-    }
-
-    while (!tail.empty() && buffer_pos + size > tail.front().offset) {
-        std::swap(sync, tail.front().sync);
-        tail.pop_front();
-    }
-
-    if (sync.handle != 0) {
-        glClientWaitSync(sync.handle, GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
-        sync.Release();
-    }
-
-    if (head.empty() || effective_offset > head.back().offset) {
-        head.emplace_back();
-        head.back().offset = effective_offset;
-    }
-
+    ASSERT(alignment <= buffer_size);
     mapped_size = size;
-    return std::make_pair(&mapped_ptr[buffer_pos], static_cast<GLintptr>(buffer_pos));
+
+    if (alignment > 0) {
+        buffer_pos = Common::AlignUp<size_t>(buffer_pos, alignment);
+    }
+
+    bool invalidate = false;
+    if (buffer_pos + size > buffer_size) {
+        buffer_pos = 0;
+        invalidate = true;
+
+        if (persistent) {
+            glUnmapBuffer(gl_target);
+        }
+    }
+
+    if (invalidate | !persistent) {
+        GLbitfield flags = GL_MAP_WRITE_BIT | (persistent ? GL_MAP_PERSISTENT_BIT : 0) |
+                           (coherent ? GL_MAP_COHERENT_BIT : GL_MAP_FLUSH_EXPLICIT_BIT) |
+                           (invalidate ? GL_MAP_INVALIDATE_BUFFER_BIT : GL_MAP_UNSYNCHRONIZED_BIT);
+        mapped_ptr = static_cast<u8*>(
+            glMapBufferRange(gl_target, buffer_pos, buffer_size - buffer_pos, flags));
+        mapped_offset = buffer_pos;
+    }
+
+    return std::make_tuple(mapped_ptr + buffer_pos - mapped_offset, buffer_pos, invalidate);
 }
 
-void StorageBuffer::Unmap() {
-    glFlushMappedBufferRange(gl_target, static_cast<GLintptr>(buffer_pos),
-                             static_cast<GLsizeiptr>(mapped_size));
-    buffer_pos += mapped_size;
+void OGLStreamBuffer::Unmap(GLsizeiptr size) {
+    ASSERT(size <= mapped_size);
+
+    if (!coherent && size > 0) {
+        glFlushMappedBufferRange(gl_target, buffer_pos - mapped_offset, size);
+    }
+
+    if (!persistent) {
+        glUnmapBuffer(gl_target);
+    }
+
+    buffer_pos += size;
 }

src/video_core/renderer_opengl/gl_stream_buffer.h

@@ -2,35 +2,41 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#pragma once
-
-#include <memory>
+#include <tuple>
 #include <glad/glad.h>
 #include "common/common_types.h"
 #include "video_core/renderer_opengl/gl_resource_manager.h"
 
 class OGLStreamBuffer : private NonCopyable {
 public:
-    explicit OGLStreamBuffer(GLenum target);
-    virtual ~OGLStreamBuffer() = default;
-
-public:
-    static std::unique_ptr<OGLStreamBuffer> MakeBuffer(bool storage_buffer, GLenum target);
-
-    virtual void Create(size_t size, size_t sync_subdivide) = 0;
-    virtual void Release() {}
+    explicit OGLStreamBuffer(GLenum target, GLsizeiptr size, bool prefer_coherent = false);
+    ~OGLStreamBuffer();
 
     GLuint GetHandle() const;
+    GLsizeiptr GetSize() const;
 
-    virtual std::pair<u8*, GLintptr> Map(size_t size, size_t alignment) = 0;
-    virtual void Unmap() = 0;
+    /*
+     * Allocates a linear chunk of memory in the GPU buffer with at least "size" bytes
+     * and the optional alignment requirement.
+     * If the buffer is full, the whole buffer is reallocated which invalidates old chunks.
+     * The return values are the pointer to the new chunk, the offset within the buffer,
+     * and the invalidation flag for previous chunks.
+     * The actual used size must be specified on unmapping the chunk.
+     */
+    std::tuple<u8*, GLintptr, bool> Map(GLsizeiptr size, GLintptr alignment = 0);
 
-protected:
+    void Unmap(GLsizeiptr size);
+
+private:
     OGLBuffer gl_buffer;
     GLenum gl_target;
 
-    size_t buffer_pos = 0;
-    size_t buffer_size = 0;
-    size_t buffer_sync_subdivide = 0;
-    size_t mapped_size = 0;
+    bool coherent = false;
+    bool persistent = false;
+
+    GLintptr buffer_pos = 0;
+    GLsizeiptr buffer_size = 0;
+    GLintptr mapped_offset = 0;
+    GLsizeiptr mapped_size = 0;
+    u8* mapped_ptr = nullptr;
 };

src/video_core/renderer_opengl/maxwell_to_gl.h

@@ -45,6 +45,9 @@ inline GLenum VertexType(Maxwell::VertexAttribute attrib) {
     case Maxwell::VertexAttribute::Type::SignedNorm: {
 
         switch (attrib.size) {
+        case Maxwell::VertexAttribute::Size::Size_32_32_32:
+            return GL_INT;
+        case Maxwell::VertexAttribute::Size::Size_8_8:
         case Maxwell::VertexAttribute::Size::Size_8_8_8_8:
             return GL_BYTE;
         case Maxwell::VertexAttribute::Size::Size_16_16:
@@ -88,6 +91,8 @@ inline GLenum PrimitiveTopology(Maxwell::PrimitiveTopology topology) {
     switch (topology) {
     case Maxwell::PrimitiveTopology::Points:
         return GL_POINTS;
+    case Maxwell::PrimitiveTopology::LineStrip:
+        return GL_LINE_STRIP;
     case Maxwell::PrimitiveTopology::Triangles:
         return GL_TRIANGLES;
     case Maxwell::PrimitiveTopology::TriangleStrip:
@@ -153,42 +158,61 @@ inline GLenum BlendEquation(Maxwell::Blend::Equation equation) {
 inline GLenum BlendFunc(Maxwell::Blend::Factor factor) {
     switch (factor) {
     case Maxwell::Blend::Factor::Zero:
+    case Maxwell::Blend::Factor::ZeroGL:
         return GL_ZERO;
     case Maxwell::Blend::Factor::One:
+    case Maxwell::Blend::Factor::OneGL:
         return GL_ONE;
     case Maxwell::Blend::Factor::SourceColor:
+    case Maxwell::Blend::Factor::SourceColorGL:
         return GL_SRC_COLOR;
     case Maxwell::Blend::Factor::OneMinusSourceColor:
+    case Maxwell::Blend::Factor::OneMinusSourceColorGL:
         return GL_ONE_MINUS_SRC_COLOR;
     case Maxwell::Blend::Factor::SourceAlpha:
+    case Maxwell::Blend::Factor::SourceAlphaGL:
         return GL_SRC_ALPHA;
     case Maxwell::Blend::Factor::OneMinusSourceAlpha:
+    case Maxwell::Blend::Factor::OneMinusSourceAlphaGL:
         return GL_ONE_MINUS_SRC_ALPHA;
     case Maxwell::Blend::Factor::DestAlpha:
+    case Maxwell::Blend::Factor::DestAlphaGL:
         return GL_DST_ALPHA;
     case Maxwell::Blend::Factor::OneMinusDestAlpha:
+    case Maxwell::Blend::Factor::OneMinusDestAlphaGL:
         return GL_ONE_MINUS_DST_ALPHA;
     case Maxwell::Blend::Factor::DestColor:
+    case Maxwell::Blend::Factor::DestColorGL:
         return GL_DST_COLOR;
     case Maxwell::Blend::Factor::OneMinusDestColor:
+    case Maxwell::Blend::Factor::OneMinusDestColorGL:
         return GL_ONE_MINUS_DST_COLOR;
     case Maxwell::Blend::Factor::SourceAlphaSaturate:
+    case Maxwell::Blend::Factor::SourceAlphaSaturateGL:
         return GL_SRC_ALPHA_SATURATE;
     case Maxwell::Blend::Factor::Source1Color:
+    case Maxwell::Blend::Factor::Source1ColorGL:
         return GL_SRC1_COLOR;
     case Maxwell::Blend::Factor::OneMinusSource1Color:
+    case Maxwell::Blend::Factor::OneMinusSource1ColorGL:
         return GL_ONE_MINUS_SRC1_COLOR;
     case Maxwell::Blend::Factor::Source1Alpha:
+    case Maxwell::Blend::Factor::Source1AlphaGL:
         return GL_SRC1_ALPHA;
     case Maxwell::Blend::Factor::OneMinusSource1Alpha:
+    case Maxwell::Blend::Factor::OneMinusSource1AlphaGL:
         return GL_ONE_MINUS_SRC1_ALPHA;
     case Maxwell::Blend::Factor::ConstantColor:
+    case Maxwell::Blend::Factor::ConstantColorGL:
         return GL_CONSTANT_COLOR;
     case Maxwell::Blend::Factor::OneMinusConstantColor:
+    case Maxwell::Blend::Factor::OneMinusConstantColorGL:
         return GL_ONE_MINUS_CONSTANT_COLOR;
     case Maxwell::Blend::Factor::ConstantAlpha:
+    case Maxwell::Blend::Factor::ConstantAlphaGL:
         return GL_CONSTANT_ALPHA;
     case Maxwell::Blend::Factor::OneMinusConstantAlpha:
+    case Maxwell::Blend::Factor::OneMinusConstantAlphaGL:
         return GL_ONE_MINUS_CONSTANT_ALPHA;
     }
     LOG_CRITICAL(Render_OpenGL, "Unimplemented blend factor={}", static_cast<u32>(factor));

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -18,7 +18,6 @@
 #include "core/tracer/recorder.h"
 #include "video_core/renderer_opengl/renderer_opengl.h"
 #include "video_core/utils.h"
-#include "video_core/video_core.h"
 
 static const char vertex_shader[] = R"(
 #version 150 core
@@ -92,7 +91,8 @@ static std::array<GLfloat, 3 * 2> MakeOrthographicMatrix(const float width, cons
     return matrix;
 }
 
-ScopeAcquireGLContext::ScopeAcquireGLContext(EmuWindow& emu_window_) : emu_window{emu_window_} {
+ScopeAcquireGLContext::ScopeAcquireGLContext(Core::Frontend::EmuWindow& emu_window_)
+    : emu_window{emu_window_} {
     if (Settings::values.use_multi_core) {
         emu_window.MakeCurrent();
     }
@@ -103,7 +103,9 @@ ScopeAcquireGLContext::~ScopeAcquireGLContext() {
     }
 }
 
-RendererOpenGL::RendererOpenGL(EmuWindow& window) : VideoCore::RendererBase{window} {}
+RendererOpenGL::RendererOpenGL(Core::Frontend::EmuWindow& window)
+    : VideoCore::RendererBase{window} {}
+
 RendererOpenGL::~RendererOpenGL() = default;
 
 /// Swap buffers (render frame)

src/video_core/renderer_opengl/renderer_opengl.h

@@ -12,7 +12,9 @@
 #include "video_core/renderer_opengl/gl_resource_manager.h"
 #include "video_core/renderer_opengl/gl_state.h"
 
+namespace Core::Frontend {
 class EmuWindow;
+}
 
 /// Structure used for storing information about the textures for the Switch screen
 struct TextureInfo {
@@ -34,16 +36,16 @@ struct ScreenInfo {
 /// Helper class to acquire/release OpenGL context within a given scope
 class ScopeAcquireGLContext : NonCopyable {
 public:
-    explicit ScopeAcquireGLContext(EmuWindow& window);
+    explicit ScopeAcquireGLContext(Core::Frontend::EmuWindow& window);
     ~ScopeAcquireGLContext();
 
 private:
-    EmuWindow& emu_window;
+    Core::Frontend::EmuWindow& emu_window;
 };
 
 class RendererOpenGL : public VideoCore::RendererBase {
 public:
-    explicit RendererOpenGL(EmuWindow& window);
+    explicit RendererOpenGL(Core::Frontend::EmuWindow& window);
     ~RendererOpenGL() override;
 
     /// Swap buffers (render frame)

src/video_core/textures/decoders.cpp

@@ -54,6 +54,7 @@ u32 BytesPerPixel(TextureFormat format) {
         return 8;
     case TextureFormat::DXT23:
     case TextureFormat::DXT45:
+    case TextureFormat::DXN2:
     case TextureFormat::BC7U:
         // In this case a 'pixel' actually refers to a 4x4 tile.
         return 16;
@@ -85,87 +86,11 @@ u32 BytesPerPixel(TextureFormat format) {
     }
 }
 
-static u32 DepthBytesPerPixel(DepthFormat format) {
-    switch (format) {
-    case DepthFormat::Z16_UNORM:
-        return 2;
-    case DepthFormat::S8_Z24_UNORM:
-    case DepthFormat::Z24_S8_UNORM:
-    case DepthFormat::Z32_FLOAT:
-        return 4;
-    case DepthFormat::Z32_S8_X24_FLOAT:
-        return 8;
-    default:
-        UNIMPLEMENTED_MSG("Format not implemented");
-        break;
-    }
-}
-
-std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width, u32 height,
-                                 u32 block_height) {
-    u8* data = Memory::GetPointer(address);
-    u32 bytes_per_pixel = BytesPerPixel(format);
-
+std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pixel, u32 width,
+                                 u32 height, u32 block_height) {
     std::vector<u8> unswizzled_data(width * height * bytes_per_pixel);
-
-    switch (format) {
-    case TextureFormat::DXT1:
-    case TextureFormat::DXT23:
-    case TextureFormat::DXT45:
-    case TextureFormat::DXN1:
-    case TextureFormat::BC7U:
-        // In the DXT and DXN formats, each 4x4 tile is swizzled instead of just individual pixel
-        // values.
-        CopySwizzledData(width / 4, height / 4, bytes_per_pixel, bytes_per_pixel, data,
-                         unswizzled_data.data(), true, block_height);
-        break;
-    case TextureFormat::A8R8G8B8:
-    case TextureFormat::A2B10G10R10:
-    case TextureFormat::A1B5G5R5:
-    case TextureFormat::B5G6R5:
-    case TextureFormat::R8:
-    case TextureFormat::G8R8:
-    case TextureFormat::R16_G16_B16_A16:
-    case TextureFormat::R32_G32_B32_A32:
-    case TextureFormat::R32_G32:
-    case TextureFormat::R32:
-    case TextureFormat::R16:
-    case TextureFormat::R16_G16:
-    case TextureFormat::BF10GF11RF11:
-    case TextureFormat::ASTC_2D_4X4:
-    case TextureFormat::R32_G32_B32:
-        CopySwizzledData(width, height, bytes_per_pixel, bytes_per_pixel, data,
-                         unswizzled_data.data(), true, block_height);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Format not implemented");
-        break;
-    }
-
-    return unswizzled_data;
-}
-
-std::vector<u8> UnswizzleDepthTexture(VAddr address, DepthFormat format, u32 width, u32 height,
-                                      u32 block_height) {
-    u8* data = Memory::GetPointer(address);
-    u32 bytes_per_pixel = DepthBytesPerPixel(format);
-
-    std::vector<u8> unswizzled_data(width * height * bytes_per_pixel);
-
-    switch (format) {
-    case DepthFormat::Z16_UNORM:
-    case DepthFormat::S8_Z24_UNORM:
-    case DepthFormat::Z24_S8_UNORM:
-    case DepthFormat::Z32_FLOAT:
-    case DepthFormat::Z32_S8_X24_FLOAT:
-        CopySwizzledData(width, height, bytes_per_pixel, bytes_per_pixel, data,
-                         unswizzled_data.data(), true, block_height);
-        break;
-    default:
-        UNIMPLEMENTED_MSG("Format not implemented");
-        break;
-    }
-
+    CopySwizzledData(width / tile_size, height / tile_size, bytes_per_pixel, bytes_per_pixel,
+                     Memory::GetPointer(address), unswizzled_data.data(), true, block_height);
     return unswizzled_data;
 }
 
@@ -179,6 +104,7 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
     case TextureFormat::DXT23:
     case TextureFormat::DXT45:
     case TextureFormat::DXN1:
+    case TextureFormat::DXN2:
     case TextureFormat::BC7U:
     case TextureFormat::ASTC_2D_4X4:
     case TextureFormat::A8R8G8B8:

src/video_core/textures/decoders.h

@@ -13,8 +13,8 @@ namespace Tegra::Texture {
 /**
  * Unswizzles a swizzled texture without changing its format.
  */
-std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width, u32 height,
-                                 u32 block_height = TICEntry::DefaultBlockHeight);
+std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pixel, u32 width,
+                                 u32 height, u32 block_height = TICEntry::DefaultBlockHeight);
 
 /**
  * Unswizzles a swizzled depth texture without changing its format.

src/video_core/video_core.cpp

@@ -9,9 +9,7 @@
 
 namespace VideoCore {
 
-std::atomic<bool> g_toggle_framelimit_enabled;
-
-std::unique_ptr<RendererBase> CreateRenderer(EmuWindow& emu_window) {
+std::unique_ptr<RendererBase> CreateRenderer(Core::Frontend::EmuWindow& emu_window) {
     return std::make_unique<RendererOpenGL>(emu_window);
 }
 

src/video_core/video_core.h

@@ -4,27 +4,22 @@
 
 #pragma once
 
-#include <atomic>
 #include <memory>
 
+namespace Core::Frontend {
 class EmuWindow;
+}
 
 namespace VideoCore {
 
 class RendererBase;
 
-enum class Renderer { Software, OpenGL };
-
-// TODO: Wrap these in a user settings struct along with any other graphics settings (often set from
-// qt ui)
-extern std::atomic<bool> g_toggle_framelimit_enabled;
-
 /**
  * Creates a renderer instance.
  *
  * @note The returned renderer instance is simply allocated. Its Init()
  *       function still needs to be called to fully complete its setup.
  */
-std::unique_ptr<RendererBase> CreateRenderer(EmuWindow& emu_window);
+std::unique_ptr<RendererBase> CreateRenderer(Core::Frontend::EmuWindow& emu_window);
 
 } // namespace VideoCore

src/yuzu/bootmanager.h

@@ -101,7 +101,7 @@ signals:
     void ErrorThrown(Core::System::ResultStatus, std::string);
 };
 
-class GRenderWindow : public QWidget, public EmuWindow {
+class GRenderWindow : public QWidget, public Core::Frontend::EmuWindow {
     Q_OBJECT
 
 public:

src/yuzu/debugger/graphics/graphics_surface.cpp

@@ -383,8 +383,10 @@ void GraphicsSurfaceWidget::OnUpdate() {
     QImage decoded_image(surface_width, surface_height, QImage::Format_ARGB32);
     boost::optional<VAddr> address = gpu.memory_manager->GpuToCpuAddress(surface_address);
 
-    auto unswizzled_data =
-        Tegra::Texture::UnswizzleTexture(*address, surface_format, surface_width, surface_height);
+    // TODO(bunnei): Will not work with BCn formats that swizzle 4x4 tiles.
+    // Needs to be fixed if we plan to use this feature more, otherwise we may remove it.
+    auto unswizzled_data = Tegra::Texture::UnswizzleTexture(
+        *address, 1, Tegra::Texture::BytesPerPixel(surface_format), surface_width, surface_height);
 
     auto texture_data = Tegra::Texture::DecodeTexture(unswizzled_data, surface_format,
                                                       surface_width, surface_height);

src/yuzu/game_list.cpp

@@ -15,6 +15,7 @@
 #include "common/string_util.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/control_metadata.h"
+#include "core/file_sys/romfs.h"
 #include "core/file_sys/vfs_real.h"
 #include "core/loader/loader.h"
 #include "game_list.h"
@@ -197,7 +198,8 @@ void GameList::onFilterCloseClicked() {
     main_window->filterBarSetChecked(false);
 }
 
-GameList::GameList(GMainWindow* parent) : QWidget{parent} {
+GameList::GameList(FileSys::VirtualFilesystem vfs, GMainWindow* parent)
+    : QWidget{parent}, vfs(std::move(vfs)) {
     watcher = new QFileSystemWatcher(this);
     connect(watcher, &QFileSystemWatcher::directoryChanged, this, &GameList::RefreshGameDirectory);
 
@@ -341,7 +343,7 @@ void GameList::PopulateAsync(const QString& dir_path, bool deep_scan) {
 
     emit ShouldCancelWorker();
 
-    GameListWorker* worker = new GameListWorker(dir_path, deep_scan);
+    GameListWorker* worker = new GameListWorker(vfs, dir_path, deep_scan);
 
     connect(worker, &GameListWorker::EntryReady, this, &GameList::AddEntry, Qt::QueuedConnection);
     connect(worker, &GameListWorker::Finished, this, &GameList::DonePopulating,
@@ -414,8 +416,8 @@ void GameListWorker::AddFstEntriesToGameList(const std::string& dir_path, unsign
         bool is_dir = FileUtil::IsDirectory(physical_name);
         QFileInfo file_info(physical_name.c_str());
         if (!is_dir && file_info.suffix().toStdString() == "nca") {
-            auto nca = std::make_shared<FileSys::NCA>(
-                std::make_shared<FileSys::RealVfsFile>(physical_name));
+            auto nca =
+                std::make_shared<FileSys::NCA>(vfs->OpenFile(physical_name, FileSys::Mode::Read));
             if (nca->GetType() == FileSys::NCAContentType::Control)
                 nca_control_map.insert_or_assign(nca->GetTitleId(), nca);
         }
@@ -436,7 +438,7 @@ void GameListWorker::AddFstEntriesToGameList(const std::string& dir_path, unsign
         if (!is_dir &&
             (HasSupportedFileExtension(physical_name) || IsExtractedNCAMain(physical_name))) {
             std::unique_ptr<Loader::AppLoader> loader =
-                Loader::GetLoader(std::make_shared<FileSys::RealVfsFile>(physical_name));
+                Loader::GetLoader(vfs->OpenFile(physical_name, FileSys::Mode::Read));
             if (!loader || ((loader->GetFileType() == Loader::FileType::Unknown ||
                              loader->GetFileType() == Loader::FileType::Error) &&
                             !UISettings::values.show_unknown))
@@ -451,15 +453,12 @@ void GameListWorker::AddFstEntriesToGameList(const std::string& dir_path, unsign
             std::string name = " ";
             const auto res3 = loader->ReadTitle(name);
 
-            if ((res1 == Loader::ResultStatus::ErrorNotUsed ||
-                 res1 == Loader::ResultStatus::ErrorNotImplemented) &&
-                (res3 == Loader::ResultStatus::ErrorNotUsed ||
-                 res3 == Loader::ResultStatus::ErrorNotImplemented) &&
+            if (res1 != Loader::ResultStatus::Success && res3 != Loader::ResultStatus::Success &&
                 res2 == Loader::ResultStatus::Success) {
                 // Use from metadata pool.
                 if (nca_control_map.find(program_id) != nca_control_map.end()) {
                     const auto nca = nca_control_map[program_id];
-                    const auto control_dir = nca->GetSubdirectories()[0];
+                    const auto control_dir = FileSys::ExtractRomFS(nca->GetRomFS());
 
                     const auto nacp_file = control_dir->GetFile("control.nacp");
                     FileSys::NACP nacp(nacp_file);

src/yuzu/game_list.h

@@ -59,7 +59,7 @@ public:
         QToolButton* button_filter_close = nullptr;
     };
 
-    explicit GameList(GMainWindow* parent = nullptr);
+    explicit GameList(FileSys::VirtualFilesystem vfs, GMainWindow* parent = nullptr);
     ~GameList() override;
 
     void clearFilter();
@@ -90,6 +90,7 @@ private:
     void PopupContextMenu(const QPoint& menu_location);
     void RefreshGameDirectory();
 
+    FileSys::VirtualFilesystem vfs;
     SearchField* search_field;
     GMainWindow* main_window = nullptr;
     QVBoxLayout* layout = nullptr;

src/yuzu/game_list_p.h

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <array>
 #include <atomic>
 #include <utility>
 #include <QImage>
@@ -39,7 +40,6 @@ public:
  * If this class receives valid SMDH data, it will also display game icons and titles.
  */
 class GameListItemPath : public GameListItem {
-
 public:
     static const int FullPathRole = Qt::UserRole + 1;
     static const int TitleRole = Qt::UserRole + 2;
@@ -48,18 +48,18 @@ public:
 
     GameListItemPath() = default;
     GameListItemPath(const QString& game_path, const std::vector<u8>& picture_data,
-                     const QString& game_name, const QString& game_type, u64 program_id)
-        : GameListItem() {
+                     const QString& game_name, const QString& game_type, u64 program_id) {
         setData(game_path, FullPathRole);
         setData(game_name, TitleRole);
         setData(qulonglong(program_id), ProgramIdRole);
         setData(game_type, FileTypeRole);
 
-        QPixmap picture;
-        u32 size = UISettings::values.icon_size;
-        if (!picture.loadFromData(picture_data.data(), picture_data.size()))
-            picture = GetDefaultIcon(size);
+        const u32 size = UISettings::values.icon_size;
 
+        QPixmap picture;
+        if (!picture.loadFromData(picture_data.data(), static_cast<u32>(picture_data.size()))) {
+            picture = GetDefaultIcon(size);
+        }
         picture = picture.scaled(size, size);
 
         setData(picture, Qt::DecorationRole);
@@ -70,17 +70,16 @@ public:
             std::string filename;
             Common::SplitPath(data(FullPathRole).toString().toStdString(), nullptr, &filename,
                               nullptr);
-            QString title = data(TitleRole).toString();
 
-            std::vector<QString> row_data{
+            const std::array<QString, 4> row_data{{
                 QString::fromStdString(filename),
                 data(FileTypeRole).toString(),
                 QString::fromStdString(fmt::format("0x{:016X}", data(ProgramIdRole).toULongLong())),
                 data(TitleRole).toString(),
-            };
+            }};
 
-            auto row1 = row_data.at(UISettings::values.row_1_text_id);
-            auto row2 = row_data.at(UISettings::values.row_2_text_id);
+            const auto& row1 = row_data.at(UISettings::values.row_1_text_id);
+            const auto& row2 = row_data.at(UISettings::values.row_2_text_id);
 
             if (row1.isEmpty() || row1 == row2)
                 return row2;
@@ -88,9 +87,9 @@ public:
                 return row1;
 
             return row1 + "\n    " + row2;
-        } else {
-            return GameListItem::data(role);
         }
+
+        return GameListItem::data(role);
     }
 };
 
@@ -139,8 +138,8 @@ class GameListWorker : public QObject, public QRunnable {
     Q_OBJECT
 
 public:
-    GameListWorker(QString dir_path, bool deep_scan)
-        : dir_path(std::move(dir_path)), deep_scan(deep_scan) {}
+    GameListWorker(FileSys::VirtualFilesystem vfs, QString dir_path, bool deep_scan)
+        : vfs(std::move(vfs)), dir_path(std::move(dir_path)), deep_scan(deep_scan) {}
 
 public slots:
     /// Starts the processing of directory tree information.
@@ -163,6 +162,7 @@ signals:
     void Finished(QStringList watch_list);
 
 private:
+    FileSys::VirtualFilesystem vfs;
     QStringList watch_list;
     QString dir_path;
     bool deep_scan;

src/yuzu/main.cpp

@@ -24,6 +24,7 @@
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/crypto/key_manager.h"
+#include "core/file_sys/vfs_real.h"
 #include "core/gdbstub/gdbstub.h"
 #include "core/loader/loader.h"
 #include "core/settings.h"
@@ -83,7 +84,9 @@ void GMainWindow::ShowCallouts() {}
 
 const int GMainWindow::max_recent_files_item;
 
-GMainWindow::GMainWindow() : config(new Config()), emu_thread(nullptr) {
+GMainWindow::GMainWindow()
+    : config(new Config()), emu_thread(nullptr),
+      vfs(std::make_shared<FileSys::RealVfsFilesystem>()) {
 
     debug_context = Tegra::DebugContext::Construct();
 
@@ -132,7 +135,7 @@ void GMainWindow::InitializeWidgets() {
     render_window = new GRenderWindow(this, emu_thread.get());
     render_window->hide();
 
-    game_list = new GameList(this);
+    game_list = new GameList(vfs, this);
     ui.horizontalLayout->addWidget(game_list);
 
     // Create status bar
@@ -406,6 +409,7 @@ bool GMainWindow::LoadROM(const QString& filename) {
     }
 
     Core::System& system{Core::System::GetInstance()};
+    system.SetFilesystem(vfs);
 
     system.SetGPUDebugContext(debug_context);
 
@@ -420,67 +424,11 @@ bool GMainWindow::LoadROM(const QString& filename) {
             QMessageBox::critical(this, tr("Error while loading ROM!"),
                                   tr("The ROM format is not supported."));
             break;
-        case Core::System::ResultStatus::ErrorUnsupportedArch:
-            LOG_CRITICAL(Frontend, "Unsupported architecture detected!", filename.toStdString());
-            QMessageBox::critical(this, tr("Error while loading ROM!"),
-                                  tr("The ROM uses currently unusable 32-bit architecture"));
-            break;
         case Core::System::ResultStatus::ErrorSystemMode:
             LOG_CRITICAL(Frontend, "Failed to load ROM!");
             QMessageBox::critical(this, tr("Error while loading ROM!"),
                                   tr("Could not determine the system mode."));
             break;
-
-        case Core::System::ResultStatus::ErrorLoader_ErrorMissingKeys: {
-            const auto reg_found = Core::Crypto::KeyManager::KeyFileExists(false);
-            const auto title_found = Core::Crypto::KeyManager::KeyFileExists(true);
-
-            std::string file_text;
-
-            if (!reg_found && !title_found) {
-                file_text = "A proper key file (prod.keys, dev.keys, or title.keys) could not be "
-                            "found. You will need to dump your keys from your switch to continue.";
-            } else if (reg_found && title_found) {
-                file_text =
-                    "Both key files were found in your config directory, but the correct key could"
-                    "not be found. You may be missing a titlekey or general key, depending on "
-                    "the game.";
-            } else if (reg_found) {
-                file_text =
-                    "The regular keys file (prod.keys/dev.keys) was found in your config, but the "
-                    "titlekeys file (title.keys) was not. You are either missing the correct "
-                    "titlekey or missing a general key required to decrypt the game.";
-            } else {
-                file_text = "The title keys file (title.keys) was found in your config, but "
-                            "the regular keys file (prod.keys/dev.keys) was not. Unfortunately, "
-                            "having the titlekey is not enough, you need additional general keys "
-                            "to properly decrypt the game. You should double-check to make sure "
-                            "your keys are correct.";
-            }
-
-            QMessageBox::critical(
-                this, tr("Error while loading ROM!"),
-                tr(("The game you are trying to load is encrypted and the required keys to load "
-                    "the game could not be found in your configuration. " +
-                    file_text + " Please refer to the yuzu wiki for help.")
-                       .c_str()));
-            break;
-        }
-        case Core::System::ResultStatus::ErrorLoader_ErrorDecrypting: {
-            QMessageBox::critical(
-                this, tr("Error while loading ROM!"),
-                tr("There was a general error while decrypting the game. This means that the keys "
-                   "necessary were found, but were either incorrect, the game itself was not a "
-                   "valid game or the game uses an unhandled cryptographic scheme. Please double "
-                   "check that you have the correct "
-                   "keys."));
-            break;
-        }
-        case Core::System::ResultStatus::ErrorLoader_ErrorInvalidFormat:
-            QMessageBox::critical(this, tr("Error while loading ROM!"),
-                                  tr("The ROM format is not supported."));
-            break;
-
         case Core::System::ResultStatus::ErrorVideoCore:
             QMessageBox::critical(
                 this, tr("An error occurred initializing the video core."),
@@ -495,9 +443,23 @@ bool GMainWindow::LoadROM(const QString& filename) {
             break;
 
         default:
-            QMessageBox::critical(
-                this, tr("Error while loading ROM!"),
-                tr("An unknown error occurred. Please see the log for more details."));
+            if (static_cast<u32>(result) >
+                static_cast<u32>(Core::System::ResultStatus::ErrorLoader)) {
+                LOG_CRITICAL(Frontend, "Failed to load ROM!");
+                const u16 loader_id = static_cast<u16>(Core::System::ResultStatus::ErrorLoader);
+                const u16 error_id = static_cast<u16>(result) - loader_id;
+                QMessageBox::critical(
+                    this, tr("Error while loading ROM!"),
+                    QString::fromStdString(fmt::format(
+                        "While attempting to load the ROM requested, an error occured. Please "
+                        "refer to the yuzu wiki for more information or the yuzu discord for "
+                        "additional help.\n\nError Code: {:04X}-{:04X}\nError Description: {}",
+                        loader_id, error_id, Loader::GetMessageForResultStatus(error_id))));
+            } else {
+                QMessageBox::critical(
+                    this, tr("Error while loading ROM!"),
+                    tr("An unknown error occurred. Please see the log for more details."));
+            }
             break;
         }
         return false;

src/yuzu/main.h

@@ -161,6 +161,9 @@ private:
     bool emulation_running = false;
     std::unique_ptr<EmuThread> emu_thread;
 
+    // FS
+    FileSys::VirtualFilesystem vfs;
+
     // Debugger panes
     ProfilerWidget* profilerWidget;
     MicroProfileDialog* microProfileDialog;

src/yuzu_cmd/emu_window/emu_window_sdl2.h

@@ -10,7 +10,7 @@
 
 struct SDL_Window;
 
-class EmuWindow_SDL2 : public EmuWindow {
+class EmuWindow_SDL2 : public Core::Frontend::EmuWindow {
 public:
     explicit EmuWindow_SDL2(bool fullscreen);
     ~EmuWindow_SDL2();

src/yuzu_cmd/yuzu.cpp

@@ -161,6 +161,7 @@ int main(int argc, char** argv) {
     }
 
     Core::System& system{Core::System::GetInstance()};
+    system.SetFilesystem(std::make_shared<FileSys::RealVfsFilesystem>());
 
     SCOPE_EXIT({ system.Shutdown(); });
 
@@ -173,19 +174,6 @@ int main(int argc, char** argv) {
     case Core::System::ResultStatus::ErrorLoader:
         LOG_CRITICAL(Frontend, "Failed to load ROM!");
         return -1;
-    case Core::System::ResultStatus::ErrorLoader_ErrorMissingKeys:
-        LOG_CRITICAL(Frontend, "The game you are trying to load is encrypted and the keys required "
-                               "could not be found. Please refer to the yuzu wiki for help");
-        return -1;
-    case Core::System::ResultStatus::ErrorLoader_ErrorDecrypting:
-        LOG_CRITICAL(Frontend, "The game you are trying to load is encrypted and there was a "
-                               "general error while decrypting. This could mean that the keys are "
-                               "incorrect, game is invalid or game uses an unsupported method of "
-                               "crypto. Please double-check your keys");
-        return -1;
-    case Core::System::ResultStatus::ErrorLoader_ErrorInvalidFormat:
-        LOG_CRITICAL(Frontend, "Error while loading ROM: The ROM format is not supported.");
-        return -1;
     case Core::System::ResultStatus::ErrorNotInitialized:
         LOG_CRITICAL(Frontend, "CPUCore not initialized");
         return -1;
@@ -197,6 +185,17 @@ int main(int argc, char** argv) {
         return -1;
     case Core::System::ResultStatus::Success:
         break; // Expected case
+    default:
+        if (static_cast<u32>(load_result) >
+            static_cast<u32>(Core::System::ResultStatus::ErrorLoader)) {
+            const u16 loader_id = static_cast<u16>(Core::System::ResultStatus::ErrorLoader);
+            const u16 error_id = static_cast<u16>(load_result) - loader_id;
+            LOG_CRITICAL(Frontend,
+                         "While attempting to load the ROM requested, an error occured. Please "
+                         "refer to the yuzu wiki for more information or the yuzu discord for "
+                         "additional help.\n\nError Code: {:04X}-{:04X}\nError Description: {}",
+                         loader_id, error_id, Loader::GetMessageForResultStatus(error_id));
+        }
     }
 
     Core::Telemetry().AddField(Telemetry::FieldType::App, "Frontend", "SDL");