[fence_manager, ui] antiflicker fix + toggle integration

Add `[[maybe_unused]]` to unused constants in the ARM NCE backend to suppress compiler warnings.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4002
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

.ci/license-header.sh

@@ -7,7 +7,7 @@
 EXCLUDE_FILES="CPM.cmake CPMUtil.cmake GetSCMRev.cmake renderdoc_app.h tools/cpm tools/shellcheck.sh tools/update-cpm.sh tools/windows/vcvarsall.sh externals/stb externals/glad externals/getopt externals/gamemode externals/FidelityFX-FSR externals/demangle externals/bc_decoder externals/cmake-modules"
 
 # license header constants, please change when needed :))))
-YEAR=2026
+YEAR=$(date "+%Y")
 HOLDER="Eden Emulator Project"
 LICENSE="GPL-3.0-or-later"
 
@@ -112,10 +112,10 @@ for file in $FILES; do
 	[ "$excluded" = "true" ] && continue
 
 	case "$file" in
-		*.cmake|*.sh|*CMakeLists.txt)
+		*.cmake|*.sh|*.ps1|*.py|*.rb|*.perl|*.pl|*.nix|*CMakeLists.txt)
 			begin="#"
 			;;
-		*.kt*|*.cpp|*.h|*.qml)
+		*.kt|*.kts|*.cpp|*.h|*.qml|*.c|*.hpp|*.hxx|*.cxx|*.h.in|*.inc)
 			begin="//"
 			;;
 		*)
@@ -185,11 +185,12 @@ if [ "$UPDATE" = "true" ]; then
 
 	for file in $SRC_FILES $OTHER_FILES; do
 		case $(basename -- "$file") in
-			*.cmake|*CMakeLists.txt)
+			# Windows Powershell wont use shebangs
+			*.cmake|*.ps1|*CMakeLists.txt)
 				begin="#"
 				shell="false"
 				;;
-			*.sh)
+			*.sh|*.py|*.rb|*.perl|*.pl|*.nix)
 				begin="#"
 				shell=true
 				;;

.ci/source.sh

@@ -1,22 +0,0 @@
-#!/bin/bash -ex
-
-# git-archive-all
-export PATH="$PATH:/home/$USER/.local/bin"
-
-GITDATE="`git show -s --date=short --format='%ad' | sed 's/-//g'`"
-GITREV="`git show -s --format='%h'`"
-REV_NAME="eden-unified-source-${GITDATE}-${GITREV}"
-
-COMPAT_LIST='dist/compatibility_list/compatibility_list.json'
-
-mkdir artifacts
-
-touch "${COMPAT_LIST}"
-git describe --abbrev=0 --always HEAD > GIT-COMMIT
-git describe --tags HEAD > GIT-TAG || echo 'unknown' > GIT-TAG
-git-archive-all --include "${COMPAT_LIST}" --include GIT-COMMIT --include GIT-TAG --force-submodules artifacts/"${REV_NAME}.tar"
-
-cd artifacts/
-xz -T0 -9 "${REV_NAME}.tar"
-sha256sum "${REV_NAME}.tar.xz" > "${REV_NAME}.tar.xz.sha256sum"
-cd ..

docs/Caveats.md

@@ -46,7 +46,7 @@ Qt Widgets appears to be broken. For now, add `-DENABLE_QT=OFF` to your configur
 This is needed for some dependencies that call cc directly (tz):
 
 ```sh
-echo '#!/bin/sh' >cc
+echo '#!/bin/sh -e' >cc
 echo 'gcc $@' >>cc
 chmod +x cc
 export PATH="$PATH:$PWD"

docs/user/SteamROM.md

@@ -59,7 +59,7 @@ EmuDeck will automatically create an *Emulators - Emulators* parser for ***Steam
 4. Paste the following code into the contents of the file, save and close the file.
     
     ```bash
-    #!/bin/bash
+    #!/bin/sh -e
     emuName="eden" #parameterize me
     
     . "$HOME/.config/EmuDeck/backend/functions/all.sh"

docs/user/ThirdParty.md

@@ -13,6 +13,7 @@ The main origin repository is always at https://git.eden-emu.dev/eden-emu/eden.
 
 - https://github.com/eden-emulator/mirror
 - https://git.crueter.xyz/mirror/eden
+- https://codeberg.org/eden-emu/eden
 - https://collective.taymaerz.de/eden/eden
 
 Other mirrors obviously exist on the internet, but we can't guarantee their reliability and/or availability.

externals/nx_tzdb/tzdb_template.h.in

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

hooks/pre-commit

@@ -1,5 +1,7 @@
-#!/bin/sh
+#!/bin/sh -e
 
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
 # SPDX-FileCopyrightText: 2015 Citra Emulator Project
 # SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -10,20 +12,19 @@ paths_to_check="src/ CMakeLists.txt"
 
 # If there are whitespace errors, print the offending file names and fail.
 if ! git diff --cached --check -- $paths_to_check ; then
-    cat<<END
-
+    cat<<EOF
 Error: This commit would contain trailing spaces or tabs, which is against this repo's policy.
 Please correct those issues before committing. (Use 'git diff --check' for more details)
 If you know what you are doing, you can try 'git commit --no-verify' to bypass the check
-END
+EOF
     exit 1
 fi
 
 # Check for tabs, since tab-in-indent catches only those at the beginning of a line
 if git diff --cached -- $paths_to_check | egrep '^\+.*	'; then
-    cat<<END
+    cat<<EOF
 Error: This commit would contain a tab, which is against this repo's policy.
 If you know what you are doing, you can try 'git commit --no-verify' to bypass the check.
-END
+EOF
     exit 1
 fi

shell.nix

@@ -1,3 +1,7 @@
+#!/usr/bin/nix-shell
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 let
   nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-24.05";
   pkgs = import nixpkgs { config = {}; overlays = []; };

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

@@ -16,6 +16,7 @@ enum class BooleanSetting(override val key: String) : AbstractBooleanSetting {
     RENDERER_USE_SPEED_LIMIT("use_speed_limit"),
     USE_CUSTOM_CPU_TICKS("use_custom_cpu_ticks"),
     SKIP_CPU_INNER_INVALIDATION("skip_cpu_inner_invalidation"),
+    ANTIFLICKER("antiflicker"),
     FIX_BLOOM_EFFECTS("fix_bloom_effects"),
     EMULATE_BGR565("emulate_bgr565"),
     RESCALE_HACK("rescale_hack"),

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

@@ -750,6 +750,13 @@ abstract class SettingsItem(
                     descriptionId = R.string.skip_cpu_inner_invalidation_description
                 )
             )
+            put(
+                SwitchSetting(
+                    BooleanSetting.ANTIFLICKER,
+                    titleId = R.string.antiflicker,
+                    descriptionId = R.string.antiflicker_description
+                )
+            )
             put(
                 SwitchSetting(
                     BooleanSetting.FIX_BLOOM_EFFECTS,

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

@@ -291,6 +291,7 @@ class SettingsFragmentPresenter(
 
             add(IntSetting.FAST_GPU_TIME.key)
             add(BooleanSetting.SKIP_CPU_INNER_INVALIDATION.key)
+            add(BooleanSetting.ANTIFLICKER.key)
             add(BooleanSetting.FIX_BLOOM_EFFECTS.key)
             add(BooleanSetting.EMULATE_BGR565.key)
             add(BooleanSetting.RESCALE_HACK.key)

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

@@ -509,6 +509,8 @@
     <string name="fast_gpu_time_description">Forces most games to run at their highest native resolution. Use 256 for maximal performance and 512 for maximal graphics fidelity.</string>
     <string name="skip_cpu_inner_invalidation">Skip CPU Inner Invalidation</string>
     <string name="skip_cpu_inner_invalidation_description">Skips certain CPU-side cache invalidations during memory updates, reducing CPU usage and improving it\'s performance. This may cause glitches or crashes on some games.</string>
+    <string name="antiflicker">Anti-Flicker</string>
+    <string name="antiflicker_description">Forces GPU fence callbacks to wait for submitted GPU work. Use with Fast GPU mode, to avoid flicker with lower performance impact.</string>
     <string name="fix_bloom_effects">Fix Bloom Effects</string>
     <string name="fix_bloom_effects_description">Reduces bloom blur in LA/EOW (Adreno A6XX - A7XX/ Turnip), removes bloom in Burnout. Warning: may cause graphical artifacts in other games.</string>
     <string name="emulate_bgr565">Emulate BGR565</string>

src/common/settings.h

@@ -545,6 +545,13 @@ struct Values {
                                                         Specialization::Default,
                                                         true,
                                                         true};
+    SwitchableSetting<bool> antiflicker{linkage,
+                                        false,
+                                        "antiflicker",
+                                        Category::RendererHacks,
+                                        Specialization::Default,
+                                        true,
+                                        true};
     SwitchableSetting<bool> async_presentation{linkage,
 #ifdef ANDROID
                                                false,

src/core/arm/nce/arm_nce.cpp

@@ -388,7 +388,7 @@ void ArmNce::SignalInterrupt(Kernel::KThread* thread) {
     }
 }
 
-const std::size_t CACHE_PAGE_SIZE = 4096;
+[[maybe_unused]] const std::size_t CACHE_PAGE_SIZE = 4096;
 
 void ArmNce::ClearInstructionCache() {
 #ifdef __aarch64__

src/core/arm/nce/interpreter_visitor.cpp

@@ -12,9 +12,9 @@ namespace Core {
 
 namespace {
 // Prefetch tuning parameters
-constexpr size_t CACHE_LINE_SIZE = 64;
-constexpr size_t PREFETCH_STRIDE = 128; // 2 cache lines ahead
-constexpr size_t SIMD_PREFETCH_THRESHOLD = 32; // Bytes
+[[maybe_unused]] constexpr size_t CACHE_LINE_SIZE = 64;
+[[maybe_unused]] constexpr size_t PREFETCH_STRIDE = 128; // 2 cache lines ahead
+[[maybe_unused]] constexpr size_t SIMD_PREFETCH_THRESHOLD = 32; // Bytes
 } // namespace
 
 template <u32 BitSize>

src/core/hle/service/sockets/sfdnsres.cpp

@@ -91,6 +91,7 @@ static const constexpr std::array blockedDomains = {
     "microsoft.com", //minecraft dungeons + other games
     "mojang.com",
     "xboxlive.com",
+    "api.epicgames.dev", // marvel cosmic invasion +?
     "minecraftservices.com"
 };
 

src/qt_common/config/shared_translation.cpp

@@ -193,6 +193,9 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QObject* parent) {
     INSERT(Settings, skip_cpu_inner_invalidation, tr("Skip CPU Inner Invalidation"),
            tr("Skips certain cache invalidations during memory updates, reducing CPU usage and "
               "improving latency. This may cause soft-crashes."));
+    INSERT(Settings, antiflicker, tr("Anti-Flicker"),
+           tr("Forces GPU fence callbacks to wait for submitted GPU work.\n"
+              "Use with Fast GPU mode, to avoid flicker with lower performance impact."));
     INSERT(Settings, vsync_mode, tr("VSync Mode:"),
            tr("FIFO (VSync) does not drop frames or exhibit tearing but is limited by the screen "
               "refresh rate.\nFIFO Relaxed allows tearing as it recovers from a slow down.\n"

src/video_core/fence_manager.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
@@ -76,9 +76,9 @@ public:
             TryReleasePendingFences<false>();
         }
         const bool should_flush = ShouldFlush();
-        const bool delay_fence = Settings::IsGPULevelHigh() || (Settings::IsGPULevelMedium() && should_flush);
+        const bool delay_fence = Settings::values.antiflicker.GetValue() || !Settings::IsGPULevelLow();
         CommitAsyncFlushes();
-        TFence new_fence = CreateFence(!should_flush);
+        TFence new_fence = CreateFence(!should_flush && !delay_fence);
         if constexpr (can_async_check) {
             guard.lock();
         }

tools/README.md

@@ -1,6 +1,6 @@
 # Tools
 
-Tools for Eden and other subprojects.
+Tools for Eden and other subprojects. When adding new scripts please use `#!/bin/sh -e` or `#!/usr/bin/env <interpreter>` (for `.py`, `.rb`, or `.perl`). Keep scripts POSIX compliant (i.e not require hard `bash` to run, just plain old `sh`).
 
 ## Third-Party
 

tools/clang-format.sh

@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/bin/sh -e
 
 # SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later

tools/dtrace-tool.pl

@@ -1,5 +1,6 @@
-#!/usr/bin/perl
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+#!/usr/bin/env perl
+
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 # Basic script to run dtrace sampling over the program (requires Flamegraph)
 # Usage is either running as: ./dtrace-tool.sh pid (then input the pid of the process)

tools/lanczos-gen.pl

@@ -1,5 +1,5 @@
-#!/usr/bin/perl
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+#!/usr/bin/env perl
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 use strict;
 use warnings;

tools/llvmpipe-run.sh

@@ -1,5 +1,6 @@
-#!/bin/sh
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+#!/bin/sh -e
+
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 # This script basically allows you to "dirtily" use llvmpipe in any configuration

tools/optimize-assets.sh

@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 which optipng || exit

tools/stale-translations.sh

@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 ANDROID=src/android/app/src/main

tools/svc_generator.py

@@ -1,5 +1,5 @@
-#!/usr/bin/python3
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+#!/usr/bin/env python3
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 # SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 # SPDX-License-Identifier: GPL-2.0-or-later
@@ -212,7 +212,7 @@ def emit_size_check():
         if type != "void":
             lines.append(f"static_assert(sizeof({type}) == {size});")
 
-    return "\n".join(lines)
+    return f"\n{lines}"
 
 
 # Replaces a type with an arch-specific one, if it exists.
@@ -423,7 +423,7 @@ def emit_lines(lines, indent='    '):
             output_lines.append(line)
         first = False
 
-    return "\n".join(output_lines)
+    return f"\n{output_lines}"
 
 
 # Emit a C++ function to wrap a guest SVC.
@@ -601,7 +601,7 @@ def emit_call(bitness, names, suffix):
     lines.append(f"{indent}}}")
     lines.append("}")
 
-    return "\n".join(lines)
+    return f"\n{lines}"
 
 
 def build_fn_declaration(return_type, name, arguments):
@@ -623,7 +623,7 @@ def build_enum_declarations():
         lines.append(f"{indent}{name} = {hex(imm)},")
 
     lines.append("};")
-    return "\n".join(lines)
+    return f"\n{lines}"
 
 
 def main():
@@ -665,11 +665,11 @@ def main():
     with open("src/core/hle/kernel/svc.h", "w") as f:
         f.write(COPYRIGHT)
         f.write(PROLOGUE_H)
-        f.write("\n".join(svc_fw_declarations))
+        f.write(f"\n{svc_fw_declarations}")
         f.write("\n\n")
-        f.write("\n".join(arch_fw_declarations[BIT_32]))
+        f.write(f"\n{arch_fw_declarations[BIT_32]}")
         f.write("\n\n")
-        f.write("\n".join(arch_fw_declarations[BIT_64]))
+        f.write(f"\n{arch_fw_declarations[BIT_64]}")
         f.write("\n\n")
         f.write(enum_decls)
         f.write(EPILOGUE_H)
@@ -679,7 +679,7 @@ def main():
         f.write(PROLOGUE_CPP)
         f.write(emit_size_check())
         f.write("\n\n")
-        f.write("\n\n".join(wrapper_fns))
+        f.write(f"\n\n{wrapper_fns}")
         f.write("\n\n")
         f.write(call_32)
         f.write("\n\n")

tools/translations/qt-source.sh

@@ -1,6 +1,6 @@
-#!/bin/sh
+#!/bin/sh -e
 
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 SOURCES=$(find src/yuzu src/qt_common -type f \( -name "*.ui" -o -name "*.cpp" -o -name "*.h" -o -name "*.plist" \))

tools/translations/update-translations.sh

@@ -1,6 +1,6 @@
-#!/bin/sh
+#!/bin/sh -e
 
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 command -v tx-cli && COMMAND=tx-cli

tools/unused-strings.sh

@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 ANDROID=src/android/app/src/main

tools/windows/install-vulkan-sdk.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/bin/sh -e
 # SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later