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darling-lol/tools/install-riot-gpu-runtime.sh
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lucannez64andClaude Opus 5.5 f823b72c5e Implement the vDSP kernels used by WebAudio 
Darling's libvDSP was almost entirely void stubs. Chromium's Blink
WebAudio on macOS uses vDSP_vsmul for any GainNode gain other than 0 or
1, so with the League client's master volume below 100% the master gain
output buffer was never written: silence when starting below 100%, and
the last block repeating as a buzz when lowering the volume. vDSP_vadd
was also a stub, so simultaneous sounds were not summed and a new sound
replaced the previous one.

Implement every vDSP function the Chromium Embedded Framework imports:
vadd, vsub, vmul, vsmul, vsadd, vsma, svesq, vclip, conv, ctoz, ztoc,
zvmul, deq22, deq22D, create_fftsetup, destroy_fftsetup and fft_zrip,
with Apple's argument order and scaling (forward real FFT is 2x the
DFT, inverse unscaled). The FFT is in place and keeps only read-only
twiddles in the setup, which callers share across threads. Build vDSP
at -O2 because it runs on the realtime render thread, and drop the
uncompiled basic.c.

The runtime installer now builds libvDSP and installs it at its
absolute path in the stopped prefix, keeping a .before-vdsp backup.
Verified against naive references for sizes up to 2^15 on the host;
confirmed manually that client sound is fixed at any volume.

Fixes #4

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-15 21:05:25 +02:00

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#!/bin/sh
# Build/install the paired GPU, NV12 and display-clock runtime overrides.
set -eu
project_dir=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
guest_home=${RIOT_GUEST_HOME:-$HOME/.darling@GUEST_HOME@}
cd "$project_dir"
python3 tools/build-m58f333-iosurface.py
# Rebuild the native wrapper with floating-point-safe symbol resolvers.
make -C build/darling-src/build/src/native GL -j4
make -C build/darling-src/build/src/frameworks/CoreServices/src/LaunchServices LaunchServices -j4
# WebAudio gain, mixing, filters and FFTs need real vDSP kernels, not stubs.
make -C build/darling-src/build/src/frameworks/Accelerate/vecLib/vDSP vDSP -j4
python3 tools/build-m58f327-opengl.py
python3 tools/build-m58f336-quartzcore.py
python3 tools/build-m58f341-corevideo.py
python3 tools/build-riot-x11-runtime.py
python3 tools/build-riot-appkit-runtime.py
python3 tools/build-riot-coregraphics-runtime.py
python3 tools/build-riot-coretext-runtime.py
python3 tools/build-riot-carboncore-runtime.py
python3 tools/build-riot-corefoundation-runtime.py
python3 tools/build-riot-kqueue-runtime.py
python3 tools/build-riot-malloc-runtime.py
python3 tools/build-riot-pthread-runtime.py
python3 tools/build-riot-audio-runtime.py
python3 tools/build-riot-objc-runtime.py
python3 tools/build-riot-cxxabi-runtime.py
python3 tools/build-riot-indium-runtime.py
python3 tools/build-riot-metal-runtime.py
python3 tools/build-riot-server-runtime.py
build/riot-host-message-check
cc -shared -fPIC -O2 -Wall -Wextra -Wl,-soname,"$project_dir/build/libdarling-xshm.so" tools/m58f299-xshm.c -o build/libdarling-xshm.so.next -pthread $(pkg-config --cflags --libs x11 x11-xcb xcb-shm xext)
python3 tools/stop-darling-runtime.py
# Host fileports own SCM_RIGHTS descriptors and must die with their last sender.
sudo make -C "$project_dir/build/darling-src/build/src/external/darlingserver" install -j12
# Electron's window-visibility correction lives in the AppKit overlay
# (NSWindow -occlusionState, cocotron.patch); no Riot binary is modified here.
for name in IOSurface OpenGL QuartzCore CoreVideo CoreAudio AudioToolbox CoreGraphics CoreText CoreFoundation Metal; do
framework="$guest_home/RuntimeFrameworks/$name.framework"
if [ ! -d "$framework" ]; then cp -a "@DARLING_SDK@/System/Library/Frameworks/$name.framework" "$framework"; fi
binary="$framework/Versions/A/$name"
if [ ! -f "$binary.before-gpu-direct" ]; then cp -p "$binary" "$binary.before-gpu-direct"; fi
case "$name" in
IOSurface) source=build/m333-IOSurface;;
OpenGL) source=build/m327-OpenGL;;
# Use the artifact rebuilt by this invocation, not an older optional probe build.
QuartzCore) source=build/m336-QuartzCore;;
CoreVideo) source=build/m341-CoreVideo;;
CoreAudio) source=build/riot-CoreAudio;;
AudioToolbox) source=build/riot-AudioToolbox;;
CoreGraphics) source=build/riot-CoreGraphics;;
CoreText) source=build/riot-CoreText;;
CoreFoundation) source=build/riot-CoreFoundation;;
Metal) source=build/riot-Metal;;
esac
install -m755 "$source" "$binary.next"
mv "$binary.next" "$binary"
# Dyld resolves Versions/A. Preserve the standard outer symlink as well.
if [ ! -L "$framework/$name" ]; then rm -f "$framework/$name"; ln -s "Versions/Current/$name" "$framework/$name"; fi
done
# Legacy version queries must also reach the corrected absolute subframework.
sh tools/install-riot-carboncore-runtime.sh
# Re-exported GL symbols use the native library's absolute install name.
# DYLD_LIBRARY_PATH must see this rebuilt wrapper as well as the framework copy.
mkdir -p "$guest_home/RuntimeLibraries"
gl_wrapper="$guest_home/RuntimeLibraries/libGL.dylib"
if [ ! -f "$gl_wrapper.before-float-resolver" ]; then
if [ -f "$gl_wrapper" ]; then cp -p "$gl_wrapper" "$gl_wrapper.before-float-resolver"
else cp -p @DARLING_SDK@/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib "$gl_wrapper.before-float-resolver"; fi
fi
install -m755 build/darling-src/build/src/native/libGL.dylib "$gl_wrapper.next"
mv "$gl_wrapper.next" "$gl_wrapper"
install -m755 build/darling-src/build/src/native/libGL.dylib "$guest_home/RuntimeFrameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib.next"
mv "$guest_home/RuntimeFrameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib.next" "$guest_home/RuntimeFrameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib"
launchservices="$guest_home/RuntimeFrameworks/LaunchServices.framework"
if [ ! -d "$launchservices" ]; then
cp -a @DARLING_SDK@/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework "$launchservices"
fi
launchservices_binary="$launchservices/Versions/A/LaunchServices"
if [ ! -f "$launchservices_binary.before-null-error" ]; then cp -p "$launchservices_binary" "$launchservices_binary.before-null-error"; fi
install -m755 build/darling-src/build/src/frameworks/CoreServices/src/LaunchServices/LaunchServices "$launchservices_binary.next"
mv "$launchservices_binary.next" "$launchservices_binary"
# Electron opens this subframework by its absolute path, bypassing the
# framework search override. Replace the same binary in the stopped prefix.
prefix_dir="${DPREFIX:-$HOME/.darling}"
launchservices_prefix="$prefix_dir/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices"
mkdir -p "$(dirname "$launchservices_prefix")"
if [ ! -f "$launchservices_prefix.before-null-error" ]; then
if [ -f "$launchservices_prefix" ]; then cp -p "$launchservices_prefix" "$launchservices_prefix.before-null-error"
else cp -p @DARLING_SDK@/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices "$launchservices_prefix.before-null-error"; fi
fi
install -m755 build/darling-src/build/src/frameworks/CoreServices/src/LaunchServices/LaunchServices "$launchservices_prefix.next"
mv "$launchservices_prefix.next" "$launchservices_prefix"
# Accelerate re-exports libvDSP by absolute path, so replace it in the stopped prefix too.
vdsp_prefix="$prefix_dir/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib"
mkdir -p "$(dirname "$vdsp_prefix")"
if [ ! -f "$vdsp_prefix.before-vdsp" ]; then
if [ -f "$vdsp_prefix" ]; then cp -p "$vdsp_prefix" "$vdsp_prefix.before-vdsp"
else cp -p @DARLING_SDK@/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib "$vdsp_prefix.before-vdsp"; fi
fi
install -m755 build/darling-src/build/src/frameworks/Accelerate/vecLib/vDSP/libvDSP.dylib "$vdsp_prefix.next"
mv "$vdsp_prefix.next" "$vdsp_prefix"
component="$guest_home/Library/Audio/Plug-Ins/Components/DarlingRiotAudio.component"
if [ ! -d "$component" ]; then
mkdir -p "$(dirname "$component")"
cp -a @DARLING_SDK@/System/Library/Components/CoreAudio.component "$component"
fi
component_binary="$component/Contents/MacOS/CoreAudio"
if [ ! -f "$component_binary.before-gpu-direct" ]; then cp -p "$component_binary" "$component_binary.before-gpu-direct"; fi
install -m755 build/riot-CoreAudioComponent "$component_binary.next"
mv "$component_binary.next" "$component_binary"
python3 - "$component/Contents/Info.plist" <<'PY'
from pathlib import Path
import plistlib
import sys
p=Path(sys.argv[1])
info=plistlib.loads(Path('build/darling-src/src/CoreAudio/CoreAudioComponent/Info.plist').read_bytes())
for component in info['AudioComponents']:
component['version']=3
p.write_bytes(plistlib.dumps(info))
PY
x11="$guest_home/RuntimeFrameworks/AppKit.framework/Versions/C/Resources/Backends/X11.backend/Contents/MacOS/X11"
appkit="$guest_home/RuntimeFrameworks/AppKit.framework/Versions/C/AppKit"
if [ ! -f "$appkit.before-gpu-direct" ]; then cp -p "$appkit" "$appkit.before-gpu-direct"; fi
install -m755 build/riot-AppKit "$appkit.next"
mv "$appkit.next" "$appkit"
if [ ! -f "$x11.before-gpu-direct" ]; then cp -p "$x11" "$x11.before-gpu-direct"; fi
install -m755 build/riot-X11 "$x11.next"
mv "$x11.next" "$x11"
kernel="$guest_home/RuntimeLibraries/libsystem_kernel.dylib"
if [ ! -f "$kernel.before-gpu-direct" ]; then cp -p "$kernel" "$kernel.before-gpu-direct"; fi
install -m755 build/riot-libsystem_kernel.dylib "$kernel.next"
mv "$kernel.next" "$kernel"
allocator="$guest_home/RuntimeLibraries/libsystem_malloc.dylib"
if [ ! -f "$allocator.before-gpu-direct" ]; then
if [ -f "$allocator" ]; then cp -p "$allocator" "$allocator.before-gpu-direct"
else cp -p @DARLING_SDK@/usr/lib/system/libsystem_malloc.dylib "$allocator.before-gpu-direct"; fi
fi
install -m755 build/riot-libsystem_malloc.dylib "$allocator.next"
mv "$allocator.next" "$allocator"
if [ -f build/libdarling-xshm.so ] && [ ! -f build/libdarling-xshm.so.before-gpu-direct ]; then cp -p build/libdarling-xshm.so build/libdarling-xshm.so.before-gpu-direct; fi
mv build/libdarling-xshm.so.next build/libdarling-xshm.so
objc_library="$guest_home/RuntimeLibraries/libobjc.A.dylib"
if [ ! -f "$objc_library.before-m761" ]; then
if [ -f "$objc_library" ]; then cp -p "$objc_library" "$objc_library.before-m761"
else cp -p @DARLING_SDK@/usr/lib/libobjc.A.dylib "$objc_library.before-m761"; fi
fi
install -m755 build/riot-libobjc.A.dylib "$objc_library.next"
mv "$objc_library.next" "$objc_library"
cxxabi_library="$guest_home/RuntimeLibraries/libc++abi.dylib"
if [ ! -f "$cxxabi_library.before-m765" ]; then
if [ -f "$cxxabi_library" ]; then cp -p "$cxxabi_library" "$cxxabi_library.before-m765"
else cp -p @DARLING_SDK@/usr/lib/libc++abi.dylib "$cxxabi_library.before-m765"; fi
fi
install -m755 build/riot-libc++abi.dylib "$cxxabi_library.next"
mv "$cxxabi_library.next" "$cxxabi_library"
indium_library="$guest_home/RuntimeLibraries/libindium.dylib"
if [ ! -f "$indium_library.before-m766" ]; then
if [ -f "$indium_library" ]; then cp -p "$indium_library" "$indium_library.before-m766"
else cp -p @DARLING_SDK@/usr/lib/darling/libindium.dylib "$indium_library.before-m766"; fi
fi
install -m755 build/riot-libindium.dylib "$indium_library.next"
mv "$indium_library.next" "$indium_library"
# libindium loads libiridium (shader translation and reflection) from the library path
iridium_library="$guest_home/RuntimeLibraries/libiridium.dylib"
if [ ! -f "$iridium_library.before-m767" ]; then
if [ -f "$iridium_library" ]; then cp -p "$iridium_library" "$iridium_library.before-m767"
else cp -p @DARLING_SDK@/usr/lib/darling/libiridium.dylib "$iridium_library.before-m767"; fi
fi
install -m755 build/riot-libiridium.dylib "$iridium_library.next"
mv "$iridium_library.next" "$iridium_library"
pthread_library="$guest_home/RuntimeLibraries/libsystem_pthread.dylib"
if [ ! -f "$pthread_library.before-gpu-direct" ]; then
if [ -f "$pthread_library" ]; then cp -p "$pthread_library" "$pthread_library.before-gpu-direct"
else cp -p @DARLING_SDK@/usr/lib/system/libsystem_pthread.dylib "$pthread_library.before-gpu-direct"; fi
fi
install -m755 build/riot-libsystem_pthread.dylib "$pthread_library.next"
mv "$pthread_library.next" "$pthread_library"
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