f3e21c6b98
Accumulated uncommitted work: GHOST Web backend, WebGL/GPU web layer, web workflow engine and protocol, tooling, docs and task records. Large generated evidence, user-testing archives, build snapshots and imported test assets remain untracked. Co-Authored-By: Claude Code <noreply@anthropic.com>
60 lines
2.6 KiB
Python
60 lines
2.6 KiB
Python
#!/usr/bin/env python3
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"""Build Blender's pinned Alembic for the existing Web CacheFile reader."""
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import hashlib
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from pathlib import Path
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import re
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import subprocess
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import tarfile
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import urllib.request
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ROOT = Path(__file__).resolve().parents[2]
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BASE = ROOT / "build_web_alembic"
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OCIO = ROOT / "build_web_ocio/install"
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def main():
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versions = (ROOT / "blender-5.2.0/build_files/build_environment/cmake/versions.cmake").read_text()
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version = re.search(r"set\(ALEMBIC_VERSION ([^)]+)\)", versions)[1]
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expected = re.search(r"set\(ALEMBIC_HASH ([^)]+)\)", versions)[1]
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algorithm = re.search(r"set\(ALEMBIC_HASH_TYPE ([^)]+)\)", versions)[1].lower()
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if not (OCIO / "lib/cmake/Imath/ImathConfig.cmake").is_file():
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raise SystemExit("Reuse/build the Web OCIO Imath installation first")
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BASE.mkdir(exist_ok=True)
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source = BASE / ("alembic-" + version)
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if not (source / "CMakeLists.txt").is_file():
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archive = BASE / ("alembic-" + version + ".tar.gz")
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if not archive.is_file():
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with urllib.request.urlopen(
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"https://codeload.github.com/alembic/alembic/tar.gz/" + version,
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timeout=60,
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) as response:
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data = response.read()
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if hashlib.new(algorithm, data).hexdigest() != expected:
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raise SystemExit("Alembic download differs from Blender's pinned source hash")
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archive.write_bytes(data)
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if hashlib.new(algorithm, archive.read_bytes()).hexdigest() != expected:
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raise SystemExit("Alembic archive differs from Blender's pinned source hash")
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with tarfile.open(archive) as package:
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package.extractall(BASE, filter="data")
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toolchain = ROOT / ".emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
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subprocess.run([
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"cmake", "-S", str(source), "-B", str(BASE / "build"), "-G", "Ninja",
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"-DCMAKE_TOOLCHAIN_FILE=" + str(toolchain),
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"-DCMAKE_BUILD_TYPE=Release", "-DCMAKE_INSTALL_LIBDIR=lib",
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"-DCMAKE_INSTALL_PREFIX=" + str(BASE / "install"),
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"-DCMAKE_PREFIX_PATH=" + str(OCIO), "-DCMAKE_FIND_ROOT_PATH=" + str(OCIO),
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"-DImath_DIR=" + str(OCIO / "lib/cmake/Imath"),
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"-DCMAKE_CXX_FLAGS=-fexceptions", "-DALEMBIC_SHARED_LIBS=OFF",
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"-DUSE_HDF5=OFF", "-DUSE_TESTS=OFF", "-DUSE_BINARIES=OFF",
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"-DUSE_EXAMPLES=OFF", "-DUSE_PYALEMBIC=OFF", "-DUSE_MAYA=OFF",
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"-DUSE_ARNOLD=OFF", "-DUSE_PRMAN=OFF",
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], cwd=ROOT, check=True)
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subprocess.run(["cmake", "--build", str(BASE / "build"), "--target", "install",
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"--parallel", "8"], cwd=ROOT, check=True)
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if __name__ == "__main__":
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main()
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