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godot/thirdparty/metal-cpp/update-metal-cpp.sh

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#!/bin/bash -e
# metal-cpp update script for Godot
#
# metal-cpp source: https://developer.apple.com/metal/cpp/
# This version includes Metal 4 APIs (macOS 26 / iOS 26).
VERSION="macOS26-iOS26"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
# If a zip is provided as argument, extract it
if [ -n "$1" ]; then
echo "Updating metal-cpp from: $1"
rm -rf \
"$SCRIPT_DIR/Foundation" \
"$SCRIPT_DIR/Metal" \
"$SCRIPT_DIR/MetalFX" \
"$SCRIPT_DIR/QuartzCore" \
"$SCRIPT_DIR/SingleHeader"
unzip -q "$1" -d "$SCRIPT_DIR"
echo "Extracted metal-cpp $VERSION"
else
echo "Applying patches only..."
fi
# =============================================================================
# Apply Godot-specific patches
# =============================================================================
echo "Applying Godot compatibility patches..."
# Apply patch files (idempotent)
PATCH_DIR="$SCRIPT_DIR/patches"
if [ -d "$PATCH_DIR" ]; then
for PATCH in "$PATCH_DIR"/*.patch; do
if [ ! -e "$PATCH" ]; then
echo " No patches found in $PATCH_DIR"
break
fi
PATCH_NAME="$(basename "$PATCH")"
if git -C "$REPO_ROOT" apply --check "$PATCH" > /dev/null 2>&1; then
git -C "$REPO_ROOT" apply "$PATCH"
echo " $PATCH_NAME: applied"
elif git -C "$REPO_ROOT" apply --reverse --check "$PATCH" > /dev/null 2>&1; then
echo " $PATCH_NAME: already applied"
else
echo " $PATCH_NAME: failed to apply"
exit 1
fi
done
else
echo " Warning: $PATCH_DIR not found"
fi
# Patch 1: Add forward declarations to NSDefines.hpp to avoid conflicts with
# Godot's global types (String, Object, Error).
#
# Without this patch, metal-cpp's "class String*" forward declarations conflict
# with Godot's ::String, ::Object, and ::Error types.
NSDEFINES="$SCRIPT_DIR/Foundation/NSDefines.hpp"
if [ -f "$NSDEFINES" ]; then
# Check if patch already applied
if grep -q "Forward declarations to avoid conflicts with Godot" "$NSDEFINES"; then
echo " NSDefines.hpp: already patched"
else
# Find the line with #pragma once and insert after the next separator
sed -i '' '/^#pragma once$/,/^\/\/---/{
/^\/\/---/ {
a\
\
// Forward declarations to avoid conflicts with Godot types (String, Object, Error)\
namespace NS {\
class Array;\
class Dictionary;\
class Error;\
class Object;\
class String;\
class URL;\
} // namespace NS
}
}' "$NSDEFINES"
echo " NSDefines.hpp: patched"
fi
else
echo " Warning: $NSDEFINES not found"
fi
echo "Done."