[fs] debug_knobs controlled delay (us) for IStorage::Read

src/android/app/build.gradle.kts

@@ -188,7 +188,7 @@ android {
         create("mainline") {
             dimension = "version"
             isDefault = true
-            minSdk = 33
+            minSdk = 30
 
             manifestPlaceholders += mapOf("appNameBase" to "Eden")
             resValue("string", "app_name_suffixed", "Eden")

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

@@ -11,6 +11,7 @@ import org.yuzu.yuzu_emu.utils.NativeConfig
 enum class StringSetting(override val key: String) : AbstractStringSetting {
     DRIVER_PATH("driver_path"),
     DEVICE_NAME("device_name"),
+    LOG_FILTER("log_filter"),
     PROGRAM_ARGS("program_args"),
 
     WEB_TOKEN("eden_token"),

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

@@ -1032,6 +1032,13 @@ abstract class SettingsItem(
                     descriptionId = R.string.use_auto_stub_description
                 )
             )
+            put(
+                StringInputSetting(
+                    StringSetting.LOG_FILTER,
+                    titleId = R.string.log_filter,
+                    descriptionId = R.string.log_filter_description
+                )
+            )
             put(
                 SpinBoxSetting(
                     ShortSetting.DEBUG_KNOBS,

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

@@ -1322,6 +1322,7 @@ class SettingsFragmentPresenter(
                 add(HeaderSetting(R.string.log))
 
                 add(BooleanSetting.DEBUG_FLUSH_BY_LINE.key)
+                add(StringSetting.LOG_FILTER.key)
             }
 
             add(HeaderSetting(R.string.general))

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

@@ -636,6 +636,8 @@
     <string name="log">Logging</string>
     <string name="flush_by_line">Flush debug logs by line</string>
     <string name="flush_by_line_description">Flushes debugging logs on each line written, making debugging easier in cases of crashing or freezing.</string>
+    <string name="log_filter">Log filter</string>
+    <string name="log_filter_description">Controls Eden\'s log categories. Example: *:Info Service.LM:Debug</string>
 
     <!-- GPU Logging strings -->
     <string name="gpu_logging_header">GPU Logging</string>

src/audio_core/sink/sdl3_sink.cpp

@@ -19,23 +19,6 @@
 namespace AudioCore::Sink {
 
 namespace {
-
-[[nodiscard]] bool InitializeAudio() {
-    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
-        // See https://github.com/PCSX2/pcsx2/pull/12312
-        // "SDL and cubeb backends previously resulted in different names for the output which
-        // caused them be identified as different applications by the OS."
-        //
-        // Keep in sync with cubeb_sink.cpp name.
-        SDL_SetHint("SDL_AUDIO_DEVICE_APP_NAME", "yuzu Latency Getter");
-        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
-            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
-            return false;
-        }
-    }
-    return true;
-}
-
 SDL_AudioDeviceID FindAudioDeviceByName(const std::string& device_name, bool capture) {
     int device_count = 0;
     SDL_AudioDeviceID* devices = capture ? SDL_GetAudioRecordingDevices(&device_count)
@@ -221,14 +204,20 @@ private:
 };
 
 SDLSink::SDLSink(std::string_view target_device_name) {
-    if (InitializeAudio()) {
-        if (target_device_name != auto_device_name && !target_device_name.empty()) {
-            output_device = target_device_name;
-        } else {
-            output_device.clear();
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
+        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
+            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
+            return;
         }
-        device_channels = 2;
     }
+
+    if (target_device_name != auto_device_name && !target_device_name.empty()) {
+        output_device = target_device_name;
+    } else {
+        output_device.clear();
+    }
+
+    device_channels = 2;
 }
 
 SDLSink::~SDLSink() = default;
@@ -276,10 +265,15 @@ void SDLSink::SetSystemVolume(f32 volume) {
 }
 
 std::vector<std::string> ListSDLSinkDevices(bool capture) {
-    if (!InitializeAudio())
-        return {}; //no devices
-
     std::vector<std::string> device_list;
+
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
+        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
+            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
+            return {};
+        }
+    }
+
     int device_count = 0;
     SDL_AudioDeviceID* devices =
         capture ? SDL_GetAudioRecordingDevices(&device_count)
@@ -310,8 +304,13 @@ bool IsSDLSuitable() {
     return false;
 #else
     // Check SDL can init
-    if (!InitializeAudio()!
-        return false;
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
+        if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
+            LOG_ERROR(Audio_Sink, "SDL failed to init, it is not suitable. Error: {}",
+                      SDL_GetError());
+            return false;
+        }
+    }
 
     // We can set any latency frequency we want with SDL, so no need to check that.
 

src/common/logging.cpp

@@ -224,7 +224,7 @@ struct ColorConsoleBackend final : public Backend {
             auto const df = GetDirectFormatArgs(entry);
             // more restrictive, because take for example this simple prelude:
             // [  50.872256] Config <Info> common/settings.cpp:142:LogSettings:
-            char buffer[256];
+            char buffer[128];
             auto result = fmt::format_to_n(buffer, sizeof(buffer) - 1, "\x1b{}[{:4d}.{:06d}] {} <{}> {}:{}:{}: ", color_str, df.time_seconds, df.time_fractional, df.class_name, df.level_name, entry.filename, entry.line_num, entry.function, entry.message);
             std::fwrite(buffer, 1, (std::min)(sizeof(buffer) - 1, result.size), stdout);
             std::fwrite(entry.message, 1, entry.message_len, stdout);
@@ -425,14 +425,14 @@ void SetColorConsoleBackendEnabled(bool enabled) {
 
 void FmtLogMessageImpl(Class log_class, Level log_level, const char* filename, unsigned int line_num, const char* function, fmt::string_view format, const fmt::format_args& args) {
     if (logging_instance && logging_instance->filter.CheckMessage(log_class, log_level)) {
-        auto const flush = ::Settings::values.log_flush_line.GetValue();
         char buffer[BUFSIZ];
         auto result = fmt::vformat_to_n(buffer, sizeof(buffer) - 1, format, args);
-        buffer[(std::min)(result.size, sizeof(buffer) - 1)] = '\0';
+        buffer[result.size] = '\0';
+        auto const flush = ::Settings::values.log_flush_line.GetValue();
         logging_instance->ForEachBackend([=](Backend& backend) {
             backend.Write(Entry{
                 .message = buffer,
-                .message_len = (std::min)(result.size, sizeof(buffer) - 1),
+                .message_len = (std::min)(sizeof(buffer) - 1, result.size),
                 .timestamp = std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - logging_instance->time_origin),
                 .log_class = log_class,
                 .log_level = log_level,

src/common/settings.cpp

@@ -132,9 +132,11 @@ void LogSettings() {
             }
         }
     }
-    LOG_INFO(Config, "Eden Configuration:");
+
+    std::string settings_str{};
     for (auto const& e : settings_list)
-        LOG_INFO(Config, "{}", e);
+        settings_str += e;
+    LOG_INFO(Config, "Eden Configuration:\n{}", settings_str);
 #define LOG_PATH(NAME) \
     LOG_INFO(Config, #NAME ": {}", Common::FS::PathToUTF8String(Common::FS::GetEdenPath(Common::FS::EdenPath::NAME)))
     LOG_PATH(CacheDir);

src/common/settings.h

@@ -904,7 +904,7 @@ struct Values {
                                            0,
                                            65535,
                                            "debug_knobs",
-                                           Category::Debugging,
+                                           Category::System,
                                            Specialization::Countable,
                                            true,
                                            true};

src/common/stb.cpp

@@ -7,4 +7,6 @@
 #define STB_IMAGE_IMPLEMENTATION 1
 #define STB_IMAGE_RESIZE_IMPLEMENTATION 1
 #define STB_IMAGE_WRITE_IMPLEMENTATION 1
+#define STBI_ONLY_JPEG 1
+
 #include "common/stb.h"

src/common/stb.h

@@ -7,7 +7,6 @@
 #pragma once
 
 #define STBI_ONLY_JPEG 1
-#define STBI_WRITE_NO_STDIO 1
 #include <stb_image.h>
 #include <stb_image_resize.h>
 #include <stb_image_write.h>

src/core/arm/arm_interface.cpp

@@ -3,14 +3,158 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <algorithm>
+#include <array>
+#include <cctype>
+#include <string>
+#include <string_view>
+#include <vector>
+
 #include "common/logging.h"
 #include "core/arm/arm_interface.h"
 #include "core/arm/debug.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_memory_block.h"
 #include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/svc_types.h"
 
 namespace Core {
 
+namespace {
+
+constexpr std::size_t GuestStringProbeBytes = 0x100;
+constexpr std::size_t StackProbeWords = 96;
+constexpr std::size_t MaxGuestStringLogs = 16;
+constexpr std::size_t MaxBacktraceFrames = 64;
+constexpr std::size_t MinGuestStringLength = 4;
+
+std::string SanitizeGuestString(std::string_view text) {
+    std::string sanitized;
+    sanitized.reserve(text.size());
+
+    for (const char ch : text) {
+        switch (ch) {
+        case '\\':
+            sanitized += "\\\\";
+            break;
+        case '"':
+            sanitized += "\\\"";
+            break;
+        default:
+            sanitized += ch;
+            break;
+        }
+    }
+
+    return sanitized;
+}
+
+bool IsUsefulGuestString(std::string_view text) {
+    if (text.size() < MinGuestStringLength) {
+        return false;
+    }
+
+    std::size_t alpha_numeric_count{};
+    for (const char ch : text) {
+        const auto byte = static_cast<unsigned char>(ch);
+        if (std::isprint(byte) == 0) {
+            return false;
+        }
+
+        if (std::isalnum(byte) != 0) {
+            alpha_numeric_count++;
+        }
+    }
+
+    return alpha_numeric_count > 0;
+}
+
+bool QueryGuestMemoryInfo(Kernel::KProcess* process, u64 address,
+                          Kernel::Svc::MemoryInfo* out_info) {
+    if (address == 0) {
+        return false;
+    }
+
+    Kernel::KMemoryInfo mem_info{};
+    Kernel::Svc::PageInfo page_info{};
+    if (process->GetPageTable().QueryInfo(&mem_info, &page_info, address).IsFailure()) {
+        return false;
+    }
+
+    *out_info = mem_info.GetSvcMemoryInfo();
+    return true;
+}
+
+void LogGuestStringCandidate(Kernel::KProcess* process, u64 address, std::string_view label,
+                             std::vector<u64>& logged_strings) {
+    if (logged_strings.size() >= MaxGuestStringLogs) {
+        return;
+    }
+    if (std::find(logged_strings.begin(), logged_strings.end(), address) != logged_strings.end()) {
+        return;
+    }
+
+    Kernel::Svc::MemoryInfo mem_info{};
+    if (!QueryGuestMemoryInfo(process, address, &mem_info)) {
+        return;
+    }
+    if (mem_info.state == Kernel::Svc::MemoryState::Free ||
+        mem_info.permission == Kernel::Svc::MemoryPermission::None) {
+        return;
+    }
+
+    if (address < mem_info.base_address) {
+        return;
+    }
+
+    const u64 region_offset = address - mem_info.base_address;
+    if (region_offset >= mem_info.size) {
+        return;
+    }
+
+    const u64 available_bytes = mem_info.size - region_offset;
+    const auto probe_size =
+        static_cast<std::size_t>(std::min<u64>(GuestStringProbeBytes, available_bytes));
+    if (probe_size < MinGuestStringLength ||
+        !process->GetMemory().IsValidVirtualAddressRange(address, probe_size)) {
+        return;
+    }
+
+    const auto text = process->GetMemory().ReadCString(address, probe_size);
+    if (!IsUsefulGuestString(text)) {
+        return;
+    }
+
+    logged_strings.push_back(address);
+    LOG_ERROR(Core_ARM, "Guest backtrace string {:02}: {}={:016X} \"{}\"",
+              logged_strings.size() - 1, label, address, SanitizeGuestString(text));
+}
+
+void LogStackStringCandidates(Kernel::KProcess* process, u64 base, std::string_view label,
+                              std::vector<u64>& logged_strings) {
+    if (base == 0) {
+        return;
+    }
+
+    auto& memory = process->GetMemory();
+    for (std::size_t i = 0; i < StackProbeWords; i++) {
+        const u64 address = base + i * sizeof(u64);
+        if (!memory.IsValidVirtualAddressRange(address, sizeof(u64))) {
+            break;
+        }
+
+        u64 value{};
+        if (!memory.ReadBlock(address, &value, sizeof(value))) {
+            continue;
+        }
+
+        LogGuestStringCandidate(process, value, fmt::format("{}+{:03X}", label, i * sizeof(u64)),
+                                logged_strings);
+    }
+}
+
+} // namespace
+
 void ArmInterface::LogBacktrace(Kernel::KProcess* process) const {
     Kernel::Svc::ThreadContext ctx;
     this->GetContext(ctx);
@@ -26,21 +170,45 @@ void ArmInterface::LogBacktrace(Kernel::KProcess* process) const {
         ctx.r[28], ctx.fp, ctx.lr, ctx.sp,
     };
 
-    std::string msg = fmt::format("Backtrace @ PC={:016X}\n", ctx.pc);
-    for (size_t i = 0; i < 32; i += 4)
-        msg += fmt::format("R{:02}={:016X} R{:02}={:016X} R{:02}={:016X} R{:02}={:016X}\n",
-            i + 0, xreg[i + 0], i + 1, xreg[i + 1],
-            i + 2, xreg[i + 2], i + 3, xreg[i + 3]);
-    for (size_t i = 0; i < 32; i += 2)
-        msg += fmt::format("V{:02}={:016X}_{:016X} V{:02}={:016X}_{:016X}\n",
-            i + 0, ctx.v[i + 0][0], ctx.v[i + 0][1],
-            i + 1, ctx.v[i + 1][0], ctx.v[i + 1][1]);
-    msg += fmt::format("PSTATE={:08X} FPCR={:08X} FPSR={:08X} TPIDR={:016X}\n", ctx.pstate, ctx.fpcr, ctx.fpsr, ctx.tpidr);
-    msg += fmt::format("{:20}{:20}{:20}{:20}{}\n", "Module", "Address", "Original Address", "Offset", "Symbol");
+    LOG_ERROR(Core_ARM,
+              "Guest backtrace context: process=\"{}\" pid={} program_id={:016X} pc={:016X} "
+              "lr={:016X} fp={:016X} sp={:016X} pstate={:08X}",
+              process->GetName(), process->GetProcessId(), process->GetProgramId(), ctx.pc,
+              ctx.lr, ctx.fp, ctx.sp, ctx.pstate);
+
+    std::vector<u64> logged_strings;
+    for (size_t i = 0; i < xreg.size(); i++) {
+        LogGuestStringCandidate(process, xreg[i], fmt::format("R{:02}", i), logged_strings);
+    }
+    LogStackStringCandidates(process, ctx.sp, "SP", logged_strings);
+    if (ctx.fp != ctx.sp) {
+        LogStackStringCandidates(process, ctx.fp, "FP", logged_strings);
+    }
+    if (logged_strings.empty()) {
+        LOG_ERROR(Core_ARM, "Guest backtrace strings: none found in registers or stack");
+    }
+
     auto const backtrace = GetBacktraceFromContext(process, ctx);
-    for (auto const& entry : backtrace)
-        msg += fmt::format("{:20}{:016X}    {:016X}    {:016X}    {}\n", entry.module, entry.address, entry.original_address, entry.offset, entry.name);
-    LOG_ERROR(Core_ARM, "{}", msg);
+    for (size_t i = 0; i < std::min(backtrace.size(), MaxBacktraceFrames); i++) {
+        const auto& entry = backtrace[i];
+        if (entry.original_address == 0) {
+            break;
+        }
+
+        if (entry.name.empty()) {
+            LOG_ERROR(Core_ARM, "Guest backtrace frame {:03}: {}+0x{:X} pc={:016X} mapped={:016X}",
+                      i, entry.module, entry.offset, entry.original_address, entry.address);
+        } else {
+            LOG_ERROR(Core_ARM,
+                      "Guest backtrace frame {:03}: {}+0x{:X} pc={:016X} mapped={:016X} symbol={}",
+                      i, entry.module, entry.offset, entry.original_address, entry.address,
+                      entry.name);
+        }
+    }
+    if (backtrace.size() > MaxBacktraceFrames) {
+        LOG_ERROR(Core_ARM, "Guest backtrace truncated: logged={} total={}", MaxBacktraceFrames,
+                  backtrace.size());
+    }
 }
 
 const Kernel::DebugWatchpoint* ArmInterface::MatchingWatchpoint(

src/core/core.cpp

@@ -4,7 +4,6 @@
 #include <array>
 #include <atomic>
 #include <memory>
-#include <unordered_map>
 #include <utility>
 
 #include "game_settings.h"
@@ -249,30 +248,12 @@ struct System::Impl {
         }
     }
 
-    void NotifyNVDECChannelOpen(u64 process_id) {
-        std::scoped_lock lock{nvdec_active_mutex};
-        ++nvdec_active_channels[process_id];
-    }
-
-    void NotifyNVDECChannelClose(u64 process_id) {
-        std::scoped_lock lock{nvdec_active_mutex};
-        const auto it = nvdec_active_channels.find(process_id);
-        if (it == nvdec_active_channels.end()) {
-            return;
-        }
-        if (--it->second == 0) {
-            nvdec_active_channels.erase(it);
-        }
+    void SetNVDECActive(bool is_nvdec_active) {
+        nvdec_active = is_nvdec_active;
     }
 
     bool GetNVDECActive() {
-        std::scoped_lock lock{nvdec_active_mutex};
-        return !nvdec_active_channels.empty();
-    }
-
-    bool IsNVDECActiveForProcess(u64 process_id) {
-        std::scoped_lock lock{nvdec_active_mutex};
-        return nvdec_active_channels.contains(process_id);
+        return nvdec_active;
     }
 
     void InitializeDebugger(System& system, u16 port) {
@@ -517,8 +498,6 @@ struct System::Impl {
 
     mutable std::mutex suspend_guard;
     std::mutex general_channel_mutex;
-    std::mutex nvdec_active_mutex;
-    std::unordered_map<u64, u32> nvdec_active_channels;
     std::atomic_bool is_paused{};
     std::atomic_bool is_shutting_down{};
     std::atomic_bool is_powered_on{};
@@ -526,6 +505,7 @@ struct System::Impl {
     bool extended_memory_layout : 1 = false;
     bool exit_locked : 1 = false;
     bool exit_requested : 1 = false;
+    bool nvdec_active : 1 = false;
 
     void EnsureGeneralChannelInitialized(System& system) {
         if (!general_channel_event) {
@@ -589,22 +569,14 @@ void System::UnstallApplication() {
     impl->UnstallApplication();
 }
 
-void System::NotifyNVDECChannelOpen(u64 process_id) {
-    impl->NotifyNVDECChannelOpen(process_id);
-}
-
-void System::NotifyNVDECChannelClose(u64 process_id) {
-    impl->NotifyNVDECChannelClose(process_id);
+void System::SetNVDECActive(bool is_nvdec_active) {
+    impl->SetNVDECActive(is_nvdec_active);
 }
 
 bool System::GetNVDECActive() {
     return impl->GetNVDECActive();
 }
 
-bool System::IsNVDECActiveForProcess(u64 process_id) {
-    return impl->IsNVDECActiveForProcess(process_id);
-}
-
 void System::InitializeDebugger() {
     impl->InitializeDebugger(*this, Settings::values.gdbstub_port.GetValue());
 }

src/core/core.h

@@ -191,10 +191,8 @@ public:
     std::unique_lock<std::mutex> StallApplication();
     void UnstallApplication();
 
-    void NotifyNVDECChannelOpen(u64 process_id);
-    void NotifyNVDECChannelClose(u64 process_id);
+    void SetNVDECActive(bool is_nvdec_active);
     [[nodiscard]] bool GetNVDECActive();
-    [[nodiscard]] bool IsNVDECActiveForProcess(u64 process_id);
 
     /**
      * Initialize the debugger.

src/core/hle/service/am/service/application_functions.cpp

@@ -324,7 +324,6 @@ Result IApplicationFunctions::NotifyRunning(Out<bool> out_became_running) {
 
 Result IApplicationFunctions::GetPseudoDeviceId(Out<Common::UUID> out_pseudo_device_id) {
     LOG_WARNING(Service_AM, "(stubbed)");
-    R_UNLESS(out_pseudo_device_id, ResultUnknown);
 
     // This should be hashed with the device specific hash
     // for now this will do

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

@@ -3,6 +3,9 @@
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
+#include <chrono>
+#include <thread>
+#include "common/settings.h"
 
 #include "core/file_sys/errors.h"
 #include "core/hle/service/cmif_serialization.h"
@@ -30,6 +33,15 @@ Result IStorage::Read(
 
     R_UNLESS(length >= 0, FileSys::ResultInvalidSize);
     R_UNLESS(offset >= 0, FileSys::ResultInvalidOffset);
+    static thread_local std::chrono::steady_clock::time_point last_read_tick{};
+    const auto now = std::chrono::steady_clock::now();
+    const auto period = Settings::values.debug_knobs.GetValue();
+    const auto ReadInterval = std::chrono::microseconds{period};
+    if (last_read_tick != std::chrono::steady_clock::time_point{} &&
+        now - last_read_tick < ReadInterval) {
+        std::this_thread::sleep_for(ReadInterval - (now - last_read_tick));
+    }
+    last_read_tick = std::chrono::steady_clock::now();
 
     // Read the data from the Storage backend
     backend->Read(out_bytes.data(), length, offset);

src/core/hle/service/ns/read_only_application_control_data_interface.cpp

@@ -9,7 +9,11 @@
 #include <optional>
 #include <string>
 
-#include "common/stb.h"
+#define STBI_ONLY_JPEG 1
+#include <stb_image.h>
+#include <stb_image_resize.h>
+#include <stb_image_write.h>
+
 #include "common/settings.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"

src/core/hle/service/nvdrv/devices/nvhost_nvdec.cpp

@@ -8,7 +8,6 @@
 #include "common/assert.h"
 #include "common/logging.h"
 #include "core/core.h"
-#include "core/hle/kernel/k_process.h"
 #include "core/hle/service/nvdrv/core/container.h"
 #include "core/hle/service/nvdrv/devices/ioctl_serialization.h"
 #include "core/hle/service/nvdrv/devices/nvhost_nvdec.h"
@@ -72,23 +71,17 @@ NvResult nvhost_nvdec::Ioctl3(DeviceFD fd, Ioctl command, std::span<const u8> in
 
 void nvhost_nvdec::OnOpen(NvCore::SessionId session_id, DeviceFD fd) {
     LOG_INFO(Service_NVDRV, "NVDEC video stream started");
+    system.SetNVDECActive(true);
     sessions[fd] = session_id;
-    if (const auto* session = core.GetSession(session_id);
-        session != nullptr && session->process != nullptr) {
-        system.NotifyNVDECChannelOpen(session->process->GetId());
-    }
     host1x.StartDevice(fd, Tegra::Host1x::ChannelType::NvDec, channel_syncpoint);
 }
 
 void nvhost_nvdec::OnClose(DeviceFD fd) {
     LOG_INFO(Service_NVDRV, "NVDEC video stream ended");
     host1x.StopDevice(fd, Tegra::Host1x::ChannelType::NvDec);
+    system.SetNVDECActive(false);
     auto it = sessions.find(fd);
     if (it != sessions.end()) {
-        if (const auto* session = core.GetSession(it->second);
-            session != nullptr && session->process != nullptr) {
-            system.NotifyNVDECChannelClose(session->process->GetId());
-        }
         sessions.erase(it);
     }
 }

src/core/hle/service/service.cpp

@@ -4,16 +4,12 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <chrono>
 #include <fmt/ranges.h>
-#include <string_view>
-#include <thread>
 #include "common/assert.h"
 #include "common/logging.h"
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/hle/ipc.h"
-#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/service.h"
@@ -37,7 +33,6 @@ ServiceFrameworkBase::ServiceFrameworkBase(Core::System& system_, const char* se
     : SessionRequestHandler(system_.Kernel(), service_name_)
     , system{system_}
     , service_name{service_name_}
-    , is_i_storage{std::string_view{service_name_} == "IStorage"}
     , handler_invoker{handler_invoker_}
     , max_sessions{max_sessions_}
 {}
@@ -82,22 +77,13 @@ void ServiceFrameworkBase::ReportUnimplementedFunction(HLERequestContext& ctx,
 }
 
 void ServiceFrameworkBase::InvokeRequest(HLERequestContext& ctx) {
-    const auto command = ctx.GetCommand();
-    auto it = handlers.find(command);
-    const bool is_cmd_read = command == 0;
+    auto it = handlers.find(ctx.GetCommand());
     FunctionInfoBase const* info = it == handlers.end() ? nullptr : &it->second;
     if (info == nullptr || info->handler_callback == nullptr)
         return ReportUnimplementedFunction(ctx, info);
 
     LOG_TRACE(Service, "{}", MakeFunctionString(info->name, GetServiceName(), ctx.CommandBuffer()));
     handler_invoker(this, info->handler_callback, ctx);
-
-    if (is_i_storage && is_cmd_read) {
-        const auto* const process = ctx.GetThread().GetOwnerProcess();
-        if (process != nullptr && system.IsNVDECActiveForProcess(process->GetId())) {
-            std::this_thread::sleep_for(std::chrono::microseconds{600});
-        }
-    }
 }
 
 void ServiceFrameworkBase::InvokeRequestTipc(HLERequestContext& ctx) {

src/core/hle/service/service.h

@@ -107,8 +107,6 @@ protected:
     Core::System& system;
     /// Identifier string used to connect to the service.
     const char* service_name;
-    /// Whether this is the IStorage service.
-    const bool is_i_storage;
     /// Function used to safely up-cast pointers to the derived class before invoking a handler.
     InvokerFn* handler_invoker;
     /// Maximum number of concurrent sessions that this service can handle.

src/dynarmic/src/dynarmic/backend/exception_handler_posix.cpp

@@ -22,7 +22,6 @@
 #include <sys/mman.h>
 
 #include "common/assert.h"
-#include "common/logging.h"
 #include "common/common_types.h"
 #include "dynarmic/backend/exception_handler.h"
 #include "dynarmic/common/context.h"
@@ -54,21 +53,23 @@ class SigHandler {
             return e.first <= offset && e.first + e.second.size > offset;
         });
     }
+    static void SigAction(int sig, siginfo_t* info, void* raw_context);
 
+    bool supports_fast_mem = true;
+    void* signal_stack_memory = nullptr;
     ankerl::unordered_dense::map<u64, CodeBlockInfo> code_block_infos;
     std::shared_mutex code_block_infos_mutex;
     struct sigaction old_sa_segv;
     struct sigaction old_sa_bus;
-    std::unique_ptr<uint8_t[]> signal_stack_memory;
-    bool supports_fast_mem = true;
+    std::size_t signal_stack_size;
 public:
     SigHandler() noexcept {
-        auto const stack_size = std::max<size_t>(SIGSTKSZ, 2 * 1024 * 1024);
-        signal_stack_memory = std::make_unique<uint8_t[]>(stack_size);
+        signal_stack_size = std::max<size_t>(SIGSTKSZ, 2 * 1024 * 1024);
+        signal_stack_memory = mmap(nullptr, signal_stack_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
 
         stack_t signal_stack{};
-        signal_stack.ss_sp = signal_stack_memory.get();
-        signal_stack.ss_size = stack_size;
+        signal_stack.ss_sp = signal_stack_memory;
+        signal_stack.ss_size = signal_stack_size;
         signal_stack.ss_flags = 0;
         if (sigaltstack(&signal_stack, nullptr) != 0) {
             fmt::print(stderr, "dynarmic: POSIX SigHandler: init failure at sigaltstack\n");
@@ -86,7 +87,7 @@ public:
             supports_fast_mem = false;
             return;
         }
-#if defined(__APPLE__)
+#ifdef __APPLE__
         if (sigaction(SIGBUS, &sa, &old_sa_bus) != 0) {
             fmt::print(stderr, "dynarmic: POSIX SigHandler: could not set SIGBUS handler\n");
             supports_fast_mem = false;
@@ -95,6 +96,10 @@ public:
 #endif
     }
 
+    ~SigHandler() noexcept {
+        munmap(signal_stack_memory, signal_stack_size);
+    }
+
     void AddCodeBlock(u64 offset, CodeBlockInfo cbi) noexcept {
         std::unique_lock guard(code_block_infos_mutex);
         code_block_infos.insert_or_assign(offset, cbi);
@@ -104,17 +109,14 @@ public:
         code_block_infos.erase(offset);
     }
 
-    [[nodiscard]] inline bool SupportsFastmem() const noexcept {
-        return supports_fast_mem;
-    }
-
-    static void RegisterHandler();
-    static void SigAction(int sig, siginfo_t* info, void* raw_context);
+    bool SupportsFastmem() const noexcept { return supports_fast_mem; }
 };
 
+std::mutex handler_lock;
 std::optional<SigHandler> sig_handler;
 
-void SigHandler::RegisterHandler() {
+void RegisterHandler() {
+    std::lock_guard<std::mutex> guard(handler_lock);
     if (!sig_handler) {
         sig_handler.emplace();
     }
@@ -123,27 +125,51 @@ void SigHandler::RegisterHandler() {
 void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
     DEBUG_ASSERT(sig == SIGSEGV || sig == SIGBUS);
     CTX_DECLARE(raw_context);
+#if defined(ARCHITECTURE_x86_64)
     {
         std::shared_lock guard(sig_handler->code_block_infos_mutex);
         if (auto const iter = sig_handler->FindCodeBlockInfo(CTX_PC); iter != sig_handler->code_block_infos.end()) {
             FakeCall fc = iter->second.cb(CTX_PC);
-#if defined(ARCHITECTURE_x86_64)
             CTX_SP -= sizeof(u64);
             *std::bit_cast<u64*>(CTX_SP) = fc.ret_rip;
             CTX_PC = fc.call_rip;
-#elif defined(ARCHITECTURE_arm64)
-            CTX_PC = fc.call_pc;
-#elif defined(ARCHITECTURE_riscv64)
-            CTX_PC = fc.call_sepc;
-#elif defined(ARCHITECTURE_loongarch64)
-            CTX_PC = fc.call_pc;
-#else
-            ASSERT(false);
-#endif
             return;
         }
     }
-    LOG_ERROR(Core, "Unhandled {} at {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
+    fmt::print(stderr, "Unhandled {} at rip {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
+#elif defined(ARCHITECTURE_arm64)
+    {
+        std::shared_lock guard(sig_handler->code_block_infos_mutex);
+        if (const auto iter = sig_handler->FindCodeBlockInfo(CTX_PC); iter != sig_handler->code_block_infos.end()) {
+            FakeCall fc = iter->second.cb(CTX_PC);
+            CTX_PC = fc.call_pc;
+            return;
+        }
+    }
+    fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
+#elif defined(ARCHITECTURE_riscv64)
+    {
+        std::shared_lock guard(sig_handler->code_block_infos_mutex);
+        if (const auto iter = sig_handler->FindCodeBlockInfo(CTX_SEPC); iter != sig_handler->code_block_infos.end()) {
+            FakeCall fc = iter->second.cb(CTX_SEPC);
+            CTX_SEPC = fc.call_sepc;
+            return;
+        }
+    }
+    fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_SEPC);
+#elif defined(ARCHITECTURE_loongarch64)
+    {
+        std::shared_lock guard(sig_handler->code_block_infos_mutex);
+        if (const auto iter = sig_handler->FindCodeBlockInfo(CTX_PC); iter != sig_handler->code_block_infos.end()) {
+            FakeCall fc = iter->second.cb(CTX_PC);
+            CTX_PC = fc.call_pc;
+            return;
+        }
+    }
+    fmt::print(stderr, "Unhandled {} at pc {:#018x}\n", sig == SIGSEGV ? "SIGSEGV" : "SIGBUS", CTX_PC);
+#else
+#    error "Invalid architecture"
+#endif
 
     struct sigaction* retry_sa = sig == SIGSEGV ? &sig_handler->old_sa_segv : &sig_handler->old_sa_bus;
     if (retry_sa->sa_flags & SA_SIGINFO) {
@@ -164,10 +190,9 @@ void SigHandler::SigAction(int sig, siginfo_t* info, void* raw_context) {
 
 struct ExceptionHandler::Impl final {
     Impl(u64 offset_, u64 size_)
-        : offset(offset_)
-        , size(size_)
-    {
-        SigHandler::RegisterHandler();
+            : offset(offset_)
+            , size(size_) {
+        RegisterHandler();
     }
 
     void SetCallback(std::function<FakeCall(u64)> cb) {

src/dynarmic/src/dynarmic/backend/loongarch64/emit_loongarch64.cpp

@@ -1,7 +1,6 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include <variant>
 #include "dynarmic/backend/loongarch64/emit_loongarch64.h"
 
 #include "dynarmic/backend/loongarch64/a32_jitstate.h"
@@ -96,8 +95,7 @@ EmittedBlockInfo EmitLoongArch64(lagoon_assembler_t& as, IR::Block block, const
 
     // TODO: Emit Terminal
     const auto term = block.GetTerminal();
-    const IR::Term::LeafTerminal* leaft_term = std::get_if<IR::Term::LeafTerminal>(&term);
-    const IR::Term::LinkBlock* link_block_term = std::get_if<IR::Term::LinkBlock>(leaft_term);
+    const IR::Term::LinkBlock* link_block_term = boost::get<IR::Term::LinkBlock>(&term);
     ASSERT(link_block_term);
     la_load_immediate64(&as, Xscratch0, link_block_term->next.Value());
     la_st_w(&as, Xscratch0, Xstate, static_cast<int32_t>(offsetof(A32JitState, regs) + sizeof(u32) * 15));

src/dynarmic/src/dynarmic/common/context.h

@@ -136,14 +136,14 @@
 #    endif
 #elif defined(ARCHITECTURE_riscv64)
 #   if defined(__FreeBSD__)
-#       define CTX_PC (mctx.mc_gpregs.gp_sepc)
+#       define CTX_SEPC (mctx.mc_gpregs.gp_sepc)
 #       define CTX_SP (mctx.mc_gpregs.gp_sp)
 #   elif defined(__linux__)
-#       define CTX_PC (mctx.__gregs[REG_PC])
+#       define CTX_SEPC (mctx.__gregs[REG_PC])
 #       define CTX_SP (mctx.__gregs[REG_SP])
 #   elif defined(__OpenBSD__)
 // https://github.com/openbsd/src/blob/master/sys/arch/riscv64/include/signal.h
-#        define CTX_PC (ucontext->sc_sepc)
+#        define CTX_SEPC (ucontext->sc_sepc)
 #        define CTX_SP (ucontext->sc_sp)
 #    else
 #        error "unknown platform"

src/qt_common/discord/discord_impl.cpp

@@ -74,8 +74,8 @@ static constexpr char DEFAULT_DISCORD_IMAGE[] =
     "https://git.eden-emu.dev/eden-emu/eden/raw/branch/master/dist/qt_themes/default/icons/256x256/"
     "eden.png";
 
-void DiscordImpl::UpdateGameStatus(std::string_view game_url, bool has_boxart) {
-    const std::string url = std::string{has_boxart ? game_url : DEFAULT_DISCORD_IMAGE};
+void DiscordImpl::UpdateGameStatus(bool use_default) {
+    const std::string url = use_default ? std::string{DEFAULT_DISCORD_IMAGE} : game_url;
     s64 start_time = std::chrono::duration_cast<std::chrono::seconds>(
                          std::chrono::system_clock::now().time_since_epoch())
                          .count();
@@ -98,7 +98,7 @@ void DiscordImpl::Update() {
 
         // Used to format Icon URL for yuzu website game compatibility page
         std::string icon_name = GetGameString(game_title);
-        auto const game_url = fmt::format(
+        game_url = fmt::format(
             "https://raw.githubusercontent.com/eden-emulator/boxart/refs/heads/master/img/{}.png",
             icon_name);
 
@@ -117,7 +117,7 @@ void DiscordImpl::Update() {
         };
 
         auto res = client.send(request);
-        UpdateGameStatus(game_url, res && res->status == 200);
+        UpdateGameStatus(res && res->status == 200);
 
         return;
     }

src/qt_common/discord/discord_impl.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: 2018 Citra Emulator Project
@@ -26,9 +26,11 @@ public:
 
 private:
     std::string GetGameString(const std::string& title);
-    void UpdateGameStatus(std::string_view game_url, bool use_default);
+    void UpdateGameStatus(bool use_default);
 
+    std::string game_url{};
     std::string game_title{};
+
     Core::System& system;
 };
 

src/shader_recompiler/backend/glasm/emit_glasm_instructions.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -665,8 +665,6 @@ void EmitShuffleDown(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU3
                      const IR::Value& clamp, const IR::Value& segmentation_mask);
 void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
                           const IR::Value& clamp, const IR::Value& segmentation_mask);
-void EmitQuadBroadcast(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 lane);
-void EmitQuadSwap(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 direction);
 void EmitFSwizzleAdd(EmitContext& ctx, IR::Inst& inst, ScalarF32 op_a, ScalarF32 op_b,
                      ScalarU32 swizzle);
 void EmitDPdxFine(EmitContext& ctx, IR::Inst& inst, ScalarF32 op_a);

src/shader_recompiler/backend/glasm/emit_glasm_warp.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -100,24 +97,6 @@ void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, Sca
     Shuffle(ctx, inst, value, index, clamp, segmentation_mask, "XOR");
 }
 
-void EmitQuadBroadcast(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 lane) {
-    const Register ret{ctx.reg_alloc.Define(inst)};
-    ctx.Add("AND.U RC.x,{}.threadid,~3;"
-            "AND.U RC.y,{},3;"
-            "OR.U RC.x,RC.x,RC.y;"
-            "SHFIDX.U {},{},RC.x,0x1C03;"
-            "MOV.U {}.x,{}.y;",
-            ctx.stage_name, lane, ret, value, ret, ret);
-}
-
-void EmitQuadSwap(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 direction) {
-    const Register ret{ctx.reg_alloc.Define(inst)};
-    ctx.Add("ADD.U RC.x,{},1;"
-            "SHFXOR.U {},{},RC.x,0x1C03;"
-            "MOV.U {}.x,{}.y;",
-            direction, ret, value, ret, ret);
-}
-
 void EmitFSwizzleAdd(EmitContext& ctx, IR::Inst& inst, ScalarF32 op_a, ScalarF32 op_b,
                      ScalarU32 swizzle) {
     const auto ret{ctx.reg_alloc.Define(inst)};

src/shader_recompiler/backend/glsl/emit_glsl_instructions.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -743,10 +743,6 @@ void EmitShuffleDown(EmitContext& ctx, IR::Inst& inst, std::string_view value,
 void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, std::string_view value,
                           std::string_view index, std::string_view clamp,
                           std::string_view segmentation_mask);
-void EmitQuadBroadcast(EmitContext& ctx, IR::Inst& inst, std::string_view value,
-                       std::string_view lane);
-void EmitQuadSwap(EmitContext& ctx, IR::Inst& inst, std::string_view value,
-                  std::string_view direction);
 void EmitFSwizzleAdd(EmitContext& ctx, IR::Inst& inst, std::string_view op_a, std::string_view op_b,
                      std::string_view swizzle);
 void EmitDPdxFine(EmitContext& ctx, IR::Inst& inst, std::string_view op_a);

src/shader_recompiler/backend/glsl/emit_glsl_warp.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -203,18 +200,6 @@ void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, std::string_view val
     ctx.AddU32("{}=shfl_in_bounds?shfl_result:{};", inst, value);
 }
 
-void EmitQuadBroadcast(EmitContext& ctx, IR::Inst& inst, std::string_view value,
-                       std::string_view lane) {
-    const auto src_thread_id{fmt::format("(({}&~3)|({}& 3))", THREAD_ID, lane)};
-    ctx.AddU32("{}=readInvocationARB({},{});", inst, value, src_thread_id);
-}
-
-void EmitQuadSwap(EmitContext& ctx, IR::Inst& inst, std::string_view value,
-                  std::string_view direction) {
-    const auto src_thread_id{fmt::format("({}^({}+1))", THREAD_ID, direction)};
-    ctx.AddU32("{}=readInvocationARB({},{});", inst, value, src_thread_id);
-}
-
 void EmitFSwizzleAdd(EmitContext& ctx, IR::Inst& inst, std::string_view op_a, std::string_view op_b,
                      std::string_view swizzle) {
     const auto mask{fmt::format("({}>>((gl_SubGroupInvocationARB&3)<<1))&3", swizzle)};

src/shader_recompiler/backend/spirv/emit_spirv.cpp

@@ -322,11 +322,6 @@ void DefineEntryPoint(const IR::Program& program, EmitContext& ctx, Id main) {
         if (ctx.runtime_info.force_early_z) {
             ctx.AddExecutionMode(main, spv::ExecutionMode::EarlyFragmentTests);
         }
-        if (ctx.profile.support_shader_quad_control && program.info.uses_quad_shuffles) {
-            ctx.AddExtension("SPV_KHR_quad_control");
-            ctx.AddCapability(spv::Capability::QuadControlKHR);
-            ctx.AddExecutionMode(main, spv::ExecutionMode::RequireFullQuadsKHR);
-        }
         break;
     default:
         throw NotImplementedException("Stage {}", program.stage);
@@ -448,12 +443,6 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
             ctx.AddCapability(spv::Capability::GroupNonUniformVote);
         }
     }
-    if (info.uses_quad_shuffles) {
-        if (profile.support_quad_shuffles) {
-            ctx.AddCapability(spv::Capability::GroupNonUniformQuad);
-        }
-        ctx.AddCapability(spv::Capability::GroupNonUniformShuffle);
-    }
     if (info.uses_int64_bit_atomics && profile.support_int64_atomics) {
         ctx.AddCapability(spv::Capability::Int64Atomics);
     }

src/shader_recompiler/backend/spirv/emit_spirv_instructions.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -622,8 +622,6 @@ Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clam
                    Id segmentation_mask);
 Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
                         Id segmentation_mask);
-Id EmitQuadBroadcast(EmitContext& ctx, Id value, Id lane);
-Id EmitQuadSwap(EmitContext& ctx, Id value, Id direction);
 Id EmitFSwizzleAdd(EmitContext& ctx, Id op_a, Id op_b, Id swizzle);
 Id EmitDPdxFine(EmitContext& ctx, Id op_a);
 Id EmitDPdyFine(EmitContext& ctx, Id op_a);

src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp

@@ -260,21 +260,6 @@ Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id
     return SelectValue(ctx, in_range, value, src_thread_id);
 }
 
-Id EmitQuadBroadcast(EmitContext& ctx, Id value, Id lane) {
-    if (ctx.profile.support_quad_shuffles) {
-        return ctx.OpGroupNonUniformQuadBroadcast(ctx.U32[1], SubgroupScope(ctx), value, lane);
-    }
-    const Id base{ctx.OpBitwiseAnd(ctx.U32[1], GetThreadId(ctx), ctx.Const(~3u))};
-    const Id local_lane{ctx.OpBitwiseAnd(ctx.U32[1], lane, ctx.Const(3u))};
-    const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], base, local_lane)};
-    return ctx.OpGroupNonUniformShuffle(ctx.U32[1], SubgroupScope(ctx), value, src_thread_id);
-}
-
-Id EmitQuadSwap(EmitContext& ctx, Id value, Id direction) {
-    const Id xor_mask{ctx.OpIAdd(ctx.U32[1], direction, ctx.Const(1u))};
-    return ctx.OpGroupNonUniformShuffleXor(ctx.U32[1], SubgroupScope(ctx), value, xor_mask);
-}
-
 Id EmitFSwizzleAdd(EmitContext& ctx, Id op_a, Id op_b, Id swizzle) {
     const Id three{ctx.Const(3U)};
     Id mask{GetThreadId(ctx)};

src/shader_recompiler/frontend/ir/ir_emitter.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -2100,14 +2100,6 @@ U32 IREmitter::ShuffleButterfly(const IR::U32& value, const IR::U32& index, cons
     return Inst<U32>(Opcode::ShuffleButterfly, value, index, clamp, seg_mask);
 }
 
-U32 IREmitter::QuadBroadcast(const IR::U32& value, const IR::U32& lane) {
-    return Inst<U32>(Opcode::QuadBroadcast, value, lane);
-}
-
-U32 IREmitter::QuadSwap(const IR::U32& value, const IR::U32& direction) {
-    return Inst<U32>(Opcode::QuadSwap, value, direction);
-}
-
 F32 IREmitter::FSwizzleAdd(const F32& a, const F32& b, const U32& swizzle, FpControl control) {
     return Inst<F32>(Opcode::FSwizzleAdd, Flags{control}, a, b, swizzle);
 }

src/shader_recompiler/frontend/ir/ir_emitter.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -394,8 +394,6 @@ public:
                                   const IR::U32& seg_mask);
     [[nodiscard]] U32 ShuffleButterfly(const IR::U32& value, const IR::U32& index,
                                        const IR::U32& clamp, const IR::U32& seg_mask);
-    [[nodiscard]] U32 QuadBroadcast(const IR::U32& value, const IR::U32& lane);
-    [[nodiscard]] U32 QuadSwap(const IR::U32& value, const IR::U32& direction);
     [[nodiscard]] F32 FSwizzleAdd(const F32& a, const F32& b, const U32& swizzle,
                                   FpControl control = {});
 

src/shader_recompiler/frontend/ir/opcodes.cpp

@@ -10,7 +10,7 @@ namespace Shader::IR {
 
 namespace Detail {
 
-OpcodeMeta META_TABLE[534] = {
+OpcodeMeta META_TABLE[532] = {
 #define OPCODE(name_token, type_token, ...)                                                        \
     {                                                                                              \
         .name{#name_token},                                                                        \
@@ -21,7 +21,7 @@ OpcodeMeta META_TABLE[534] = {
 #undef OPCODE
 };
 
-u8 NUM_ARGS[534] = {
+u8 NUM_ARGS[532] = {
 #define OPCODE(name_token, type_token, ...) u8(CalculateNumArgsOf(Opcode::name_token)),
 #include "opcodes.inc"
 #undef OPCODE

src/shader_recompiler/frontend/ir/opcodes.h

@@ -57,12 +57,12 @@ static constexpr Type F64x2{Type::F64x2};
 static constexpr Type F64x3{Type::F64x3};
 static constexpr Type F64x4{Type::F64x4};
 
-extern OpcodeMeta META_TABLE[534];
+extern OpcodeMeta META_TABLE[532];
 constexpr size_t CalculateNumArgsOf(Opcode op) noexcept {
     const auto& arg_types = META_TABLE[size_t(op)].arg_types;
     return size_t(std::distance(arg_types.begin(), std::ranges::find(arg_types, Type::Void)));
 }
-extern u8 NUM_ARGS[534];
+extern u8 NUM_ARGS[532];
 } // namespace Detail
 
 /// Get return type of an opcode

src/shader_recompiler/frontend/ir/opcodes.inc

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -582,8 +579,6 @@ OPCODE(ShuffleIndex,                                        U32,            U32,
 OPCODE(ShuffleUp,                                           U32,            U32,            U32,            U32,            U32,                            )
 OPCODE(ShuffleDown,                                         U32,            U32,            U32,            U32,            U32,                            )
 OPCODE(ShuffleButterfly,                                    U32,            U32,            U32,            U32,            U32,                            )
-OPCODE(QuadBroadcast,                                       U32,            U32,            U32,                                                                    )
-OPCODE(QuadSwap,                                            U32,            U32,            U32,                                                                    )
 OPCODE(FSwizzleAdd,                                         F32,            F32,            F32,            U32,                                            )
 OPCODE(DPdxFine,                                            F32,            F32,                                                                            )
 OPCODE(DPdyFine,                                            F32,            F32,                                                                            )

src/shader_recompiler/frontend/maxwell/translate/impl/warp_shuffle.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
@@ -36,10 +36,7 @@ enum class ShuffleMode : u64 {
     }
 }
 
-constexpr u32 QUAD_MASK = (28u << 8) | 3u;
-
-void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32& mask,
-             bool index_is_imm, u32 index_imm, bool mask_is_imm, u32 mask_imm) {
+void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32& mask) {
     union {
         u64 insn;
         BitField<0, 8, IR::Reg> dest_reg;
@@ -48,21 +45,6 @@ void Shuffle(TranslatorVisitor& v, u64 insn, const IR::U32& index, const IR::U32
         BitField<48, 3, IR::Pred> pred;
     } const shfl{insn};
 
-    const bool is_quad_candidate{mask_is_imm && mask_imm == QUAD_MASK && index_is_imm &&
-                                  v.env.ShaderStage() == Stage::Fragment};
-    if (is_quad_candidate) {
-        if (shfl.mode == ShuffleMode::IDX && index_imm <= 3) {
-            v.X(shfl.dest_reg, v.ir.QuadBroadcast(v.X(shfl.src_reg), v.ir.Imm32(index_imm)));
-            v.ir.SetPred(shfl.pred, v.ir.Imm1(true));
-            return;
-        }
-        if (shfl.mode == ShuffleMode::BFLY && index_imm >= 1 && index_imm <= 3) {
-            v.X(shfl.dest_reg, v.ir.QuadSwap(v.X(shfl.src_reg), v.ir.Imm32(index_imm - 1)));
-            v.ir.SetPred(shfl.pred, v.ir.Imm1(true));
-            return;
-        }
-    }
-
     const IR::U32 result{ShuffleOperation(v.ir, v.X(shfl.src_reg), index, mask, shfl.mode)};
     v.ir.SetPred(shfl.pred, v.ir.GetInBoundsFromOp(result));
     v.X(shfl.dest_reg, result);
@@ -77,14 +59,11 @@ void TranslatorVisitor::SHFL(u64 insn) {
         BitField<29, 1, u64> src_b_flag;
         BitField<34, 13, u64> src_b_imm;
     } const flags{insn};
-    const bool index_is_imm{flags.src_a_flag != 0};
-    const bool mask_is_imm{flags.src_b_flag != 0};
-    const IR::U32 src_a{index_is_imm ? ir.Imm32(static_cast<u32>(flags.src_a_imm))
-                                     : GetReg20(insn)};
-    const IR::U32 src_b{mask_is_imm ? ir.Imm32(static_cast<u32>(flags.src_b_imm))
-                                    : GetReg39(insn)};
-    Shuffle(*this, insn, src_a, src_b, index_is_imm, static_cast<u32>(flags.src_a_imm),
-            mask_is_imm, static_cast<u32>(flags.src_b_imm));
+    const IR::U32 src_a{flags.src_a_flag != 0 ? ir.Imm32(static_cast<u32>(flags.src_a_imm))
+                                              : GetReg20(insn)};
+    const IR::U32 src_b{flags.src_b_flag != 0 ? ir.Imm32(static_cast<u32>(flags.src_b_imm))
+                                              : GetReg39(insn)};
+    Shuffle(*this, insn, src_a, src_b);
 }
 
 } // namespace Shader::Maxwell

src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp

@@ -498,10 +498,6 @@ void VisitUsages(Info& info, IR::Inst& inst) {
     case IR::Opcode::ShuffleButterfly:
         info.uses_subgroup_shuffles = true;
         break;
-    case IR::Opcode::QuadBroadcast:
-    case IR::Opcode::QuadSwap:
-        info.uses_quad_shuffles = true;
-        break;
     case IR::Opcode::GetCbufU8:
     case IR::Opcode::GetCbufS8:
     case IR::Opcode::GetCbufU16:

src/shader_recompiler/profile.h

@@ -37,8 +37,6 @@ struct Profile {
     bool support_explicit_workgroup_layout{};
     bool support_workgroup_layout_8bit_access{};
     bool support_workgroup_layout_16bit_access{};
-    bool support_shader_quad_control{};
-    bool support_quad_shuffles{};
     bool support_vote{};
     u32 supported_subgroup_stages{0x7F};
     bool support_viewport_index_layer_non_geometry{};

src/shader_recompiler/shader_info.h

@@ -252,7 +252,6 @@ struct Info {
     bool uses_is_helper_invocation{};
     bool uses_subgroup_invocation_id{};
     bool uses_subgroup_shuffles{};
-    bool uses_quad_shuffles{};
     std::array<bool, 30> uses_patches{};
 
     std::array<Interpolation, 32> interpolation{};

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -404,8 +404,6 @@ PipelineCache::PipelineCache(Tegra::MaxwellDeviceMemoryManager& device_memory_,
             device.IsWorkgroupMemoryExplicitLayout8BitAccessSupported(),
         .support_workgroup_layout_16bit_access =
             device.IsWorkgroupMemoryExplicitLayout16BitAccessSupported(),
-        .support_shader_quad_control = device.IsKhrShaderQuadControlSupported(),
-        .support_quad_shuffles = device.IsSubgroupFeatureSupported(VK_SUBGROUP_FEATURE_QUAD_BIT),
         .support_vote = device.IsSubgroupFeatureSupported(VK_SUBGROUP_FEATURE_VOTE_BIT),
         .supported_subgroup_stages = supported_subgroup_stages,
         .support_viewport_index_layer_non_geometry =

src/video_core/vulkan_common/vulkan_device.cpp

@@ -1386,11 +1386,6 @@ void Device::RemoveUnsuitableExtensions() {
                                VK_KHR_PIPELINE_EXECUTABLE_PROPERTIES_EXTENSION_NAME);
     }
 
-    // VK_KHR_shader_quad_control
-    extensions.shader_quad_control = features.shader_quad_control.shaderQuadControl;
-    RemoveExtensionFeatureIfUnsuitable(extensions.shader_quad_control, features.shader_quad_control,
-                                       VK_KHR_SHADER_QUAD_CONTROL_EXTENSION_NAME);
-
     // VK_KHR_workgroup_memory_explicit_layout
     extensions.workgroup_memory_explicit_layout =
         features.workgroup_memory_explicit_layout.workgroupMemoryExplicitLayout &&

src/video_core/vulkan_common/vulkan_device.h

@@ -75,7 +75,6 @@ VK_DEFINE_HANDLE(VmaAllocator)
     FEATURE(KHR, Maintenance6, MAINTENANCE_6, maintenance6)                                        \
     FEATURE(KHR, PipelineExecutableProperties, PIPELINE_EXECUTABLE_PROPERTIES,                     \
             pipeline_executable_properties)                                                        \
-    FEATURE(KHR, ShaderQuadControl, SHADER_QUAD_CONTROL, shader_quad_control)                      \
     FEATURE(KHR, WorkgroupMemoryExplicitLayout, WORKGROUP_MEMORY_EXPLICIT_LAYOUT,                  \
             workgroup_memory_explicit_layout)
 
@@ -587,11 +586,6 @@ FN_MAX_LIMIT_LIST
                features.features.shaderInt16;
     }
 
-    /// Returns true if the device supports VK_KHR_shader_quad_control.
-    bool IsKhrShaderQuadControlSupported() const {
-        return extensions.shader_quad_control && features.shader_quad_control.shaderQuadControl;
-    }
-
     /// Returns true if the device supports VK_KHR_image_format_list.
     bool IsKhrImageFormatListSupported() const {
         return extensions.image_format_list || instance_version >= VK_API_VERSION_1_2;