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#!/usr/bin/env bash
set -euo pipefail
set -x
exec > >(tee -i /tmp/fgmod-prefix-managed.log) 2>&1
log() {
echo "$*"
logger -t fgmod-prefix-managed "$*"
}
error_exit() {
local message="$1"
echo "❌ $message"
logger -t fgmod-prefix-managed "ERROR: $message"
if [[ -n "${STEAM_ZENITY:-}" ]]; then
"$STEAM_ZENITY" --error --text "$message" || true
elif command -v zenity >/dev/null 2>&1; then
zenity --error --text "$message" || true
fi
exit 1
}
bundle_root="${HOME}/fgmod"
managed_dir_name="optiscaler-managed"
manifest_name="manifest.env"
proxy_name="${OPTISCALER_PROXY:-${DLL:-winmm}}"
proxy_name="${proxy_name%.dll}"
proxy_dll="${proxy_name}.dll"
backup_dll="${proxy_name}-original.dll"
support_files=(
"libxess.dll"
"libxess_dx11.dll"
"libxess_fg.dll"
"libxell.dll"
"amd_fidelityfx_dx12.dll"
"amd_fidelityfx_framegeneration_dx12.dll"
"amd_fidelityfx_upscaler_dx12.dll"
"amd_fidelityfx_vk.dll"
"nvngx.dll"
"dlssg_to_fsr3_amd_is_better.dll"
"fakenvapi.dll"
"fakenvapi.ini"
)
case "$proxy_name" in
winmm|dxgi|version|dbghelp|winhttp|wininet|d3d12) ;;
*) error_exit "Unsupported OPTISCALER_PROXY '$proxy_name'." ;;
esac
[[ -d "$bundle_root" ]] || error_exit "OptiScaler runtime not installed at $bundle_root"
[[ -n "${STEAM_COMPAT_DATA_PATH:-}" ]] || error_exit "STEAM_COMPAT_DATA_PATH is required. Use this wrapper from a Steam/Proton launch option."
[[ $# -ge 1 ]] || error_exit "Usage: $0 program [program_arguments...]"
compatdata_path="$STEAM_COMPAT_DATA_PATH"
system32_path="$compatdata_path/pfx/drive_c/windows/system32"
managed_root="$compatdata_path/$managed_dir_name"
manifest_path="$managed_root/$manifest_name"
managed_ini="$managed_root/OptiScaler.ini"
managed_plugins="$managed_root/plugins"
cleanup_proxy_stage() {
local cleanup_proxy="$1"
local cleanup_proxy_dll="${cleanup_proxy}.dll"
local cleanup_backup_dll="${cleanup_proxy}-original.dll"
rm -f "$system32_path/$cleanup_proxy_dll"
if [[ -f "$system32_path/$cleanup_backup_dll" ]]; then
mv -f "$system32_path/$cleanup_backup_dll" "$system32_path/$cleanup_proxy_dll"
fi
}
cleanup_stage_files() {
local cleanup_proxy="$1"
rm -f "$system32_path/OptiScaler.ini"
for file_name in "${support_files[@]}"; do
rm -f "$system32_path/$file_name"
done
rm -f "$system32_path/OptiScaler.log"
rm -rf "$system32_path/plugins"
cleanup_proxy_stage "$cleanup_proxy"
}
mkdir -p "$system32_path" "$managed_root" "$managed_plugins"
existing_proxy=""
if [[ -f "$manifest_path" ]]; then
# shellcheck disable=SC1090
source "$manifest_path"
existing_proxy="${MANAGED_PROXY:-}"
fi
if [[ -n "$existing_proxy" && "$existing_proxy" != "$proxy_name" ]]; then
log "Switching managed proxy from $existing_proxy to $proxy_name"
cleanup_stage_files "$existing_proxy"
fi
[[ -f "$bundle_root/OptiScaler.ini" ]] || error_exit "Missing OptiScaler.ini in runtime bundle"
[[ -f "$bundle_root/update-optiscaler-config.py" ]] || error_exit "Missing update-optiscaler-config.py in runtime bundle"
python_bin="python3"
if ! command -v "$python_bin" >/dev/null 2>&1; then
python_bin="python"
fi
command -v "$python_bin" >/dev/null 2>&1 || error_exit "Python interpreter not found"
if [[ ! -f "$managed_ini" ]]; then
cp -f "$bundle_root/OptiScaler.ini" "$managed_ini"
fi
"$python_bin" "$bundle_root/update-optiscaler-config.py" "$managed_ini"
sed -i 's/^UseHQFont[[:space:]]*=[[:space:]]*auto$/UseHQFont=false/' "$managed_ini" || true
if [[ -d "$bundle_root/plugins" ]]; then
rm -rf "$managed_plugins"
mkdir -p "$managed_plugins"
cp -f "$bundle_root/plugins"/* "$managed_plugins/" 2>/dev/null || true
fi
for file_name in "${support_files[@]}"; do
if [[ -f "$bundle_root/$file_name" ]]; then
cp -f "$bundle_root/$file_name" "$system32_path/$file_name"
fi
done
if [[ -d "$managed_plugins" ]]; then
rm -rf "$system32_path/plugins"
mkdir -p "$system32_path/plugins"
cp -f "$managed_plugins"/* "$system32_path/plugins/" 2>/dev/null || true
fi
if [[ -f "$system32_path/$proxy_dll" && ! -f "$system32_path/$backup_dll" ]]; then
mv -f "$system32_path/$proxy_dll" "$system32_path/$backup_dll"
fi
if [[ -f "$bundle_root/renames/$proxy_dll" ]]; then
cp -f "$bundle_root/renames/$proxy_dll" "$system32_path/$proxy_dll"
else
cp -f "$bundle_root/OptiScaler.dll" "$system32_path/$proxy_dll"
fi
cp -f "$managed_ini" "$system32_path/OptiScaler.ini"
runtime_version="unknown"
if [[ -f "$bundle_root/version.txt" ]]; then
runtime_version="$(<"$bundle_root/version.txt")"
fi
cat > "$manifest_path" <<EOF
MANAGED_PROXY="$proxy_name"
BUNDLE_ROOT="$bundle_root"
BUNDLE_VERSION="$runtime_version"
SYSTEM32_PATH="$system32_path"
EOF
export SteamDeck=0
if [[ -n "${WINEDLLOVERRIDES:-}" ]]; then
export WINEDLLOVERRIDES="${WINEDLLOVERRIDES},${proxy_name}=n,b"
else
export WINEDLLOVERRIDES="${proxy_name}=n,b"
fi
while [[ $# -gt 0 && "$1" == "--" ]]; do
shift
done
log "Using compatdata path: $compatdata_path"
log "Using system32 path: $system32_path"
log "Using prefix-managed proxy: $proxy_dll"
log "Using WINEDLLOVERRIDES=$WINEDLLOVERRIDES"
set +e
"$@"
exit_code=$?
set -e
if [[ -f "$system32_path/OptiScaler.ini" ]]; then
cp -f "$system32_path/OptiScaler.ini" "$managed_ini"
fi
exit "$exit_code"
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