66 lines
2.8 KiB
Python
66 lines
2.8 KiB
Python
#!/usr/bin/env python3
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"""Generate a minimal native Blender compositor fixture for one WBV2 batch."""
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from __future__ import annotations
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import argparse
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import json
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import subprocess
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from pathlib import Path
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ROOT = Path(__file__).resolve().parents[1]
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NATIVE_BLENDER = ROOT / "build_blender_native/bin/blender"
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--output", required=True, help="repository-relative .blend output under tests/files/web")
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parser.add_argument("--node", action="append", required=True, help="Blender CompositorNode type identifier")
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args = parser.parse_args()
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output = Path(args.output)
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if output.is_absolute() or ".." in output.parts or output.suffix != ".blend" or not str(output).startswith("tests/files/web/"):
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parser.error("--output must be a repository-relative .blend path under tests/files/web/")
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nodes = list(dict.fromkeys(args.node))
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if not nodes or any(not node.startswith("CompositorNode") or not node.replace("_", "").isalnum() for node in nodes):
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parser.error("every --node must be a Blender CompositorNode identifier")
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if not NATIVE_BLENDER.is_file():
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raise SystemExit(f"native Blender fixture generator is unavailable: {NATIVE_BLENDER.relative_to(ROOT)}")
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destination = ROOT / output
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destination.parent.mkdir(parents=True, exist_ok=True)
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script = (
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"import bpy\n"
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f"destination = {str(destination)!r}\n"
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f"node_types = {nodes!r}\n"
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"scene = bpy.context.scene\n"
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"tree = bpy.data.node_groups.new('WBV2 Compositor Native Batch', 'CompositorNodeTree')\n"
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"scene.compositing_node_group = tree\n"
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"tree.interface.new_socket(name='Image', in_out='OUTPUT', socket_type='NodeSocketColor')\n"
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"source = tree.nodes.new('CompositorNodeRGB')\n"
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"source.name = 'WBV2 Batch Source'\n"
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"output = tree.nodes.new('NodeGroupOutput')\n"
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"output.name = 'WBV2 Batch Output'\n"
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"tree.links.new(source.outputs[0], output.inputs[0])\n"
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"for node_type in node_types:\n"
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" node = tree.nodes.new(node_type)\n"
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" node.name = 'WBV2 ' + node_type\n"
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"bpy.ops.wm.save_as_mainfile(filepath=destination)\n"
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)
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result = subprocess.run(
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[str(NATIVE_BLENDER), "--background", "--factory-startup", "--python-expr", script],
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cwd=ROOT,
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text=True,
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capture_output=True,
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check=False,
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)
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if result.returncode or not destination.is_file():
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raise SystemExit(f"native compositor fixture generation failed ({result.returncode}):\n{result.stdout}{result.stderr}")
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print(json.dumps({"status": "PASS", "fixture": output.as_posix(), "nodes": nodes, "bytes": destination.stat().st_size}))
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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