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MobileGL/tools/piglit-android/compare_results.py
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#!/usr/bin/env python3
# MobileGL - tools/piglit-android/compare_results.py
# Copyright (c) 2025-2026 MobileGL-Dev
# Licensed under the GNU Lesser General Public License v3.0:
# https://www.gnu.org/licenses/gpl-3.0.txt
# https://www.gnu.org/licenses/lgpl-3.0.txt
# SPDX-License-Identifier: LGPL-3.0-only
# End of Source File Header
"""Compare two run_piglit_android.py results.json files (e.g. DirectGLES vs
DirectVulkan) and write a markdown report of totals plus categorized diffs."""
import argparse
import json
from collections import Counter
from pathlib import Path
BAD = ('crash', 'timeout', 'fail', 'missing', 'notrun', 'warn')
def load(path):
d = json.loads(Path(path).read_text())
return d
def main():
ap = argparse.ArgumentParser(description=__doc__)
ap.add_argument('a', help='first results.json')
ap.add_argument('b', help='second results.json')
ap.add_argument('-o', '--out', help='markdown output path')
args = ap.parse_args()
da, db = load(args.a), load(args.b)
na, nb = da['backend'], db['backend']
ta, tb = da['tests'], db['tests']
names = sorted(set(ta) | set(tb))
lines = [f'# piglit: {na} vs {nb}', '']
lines.append(f'| | {na} | {nb} |')
lines.append('|---|---|---|')
ca = Counter(o["status"] for o in ta.values())
cb = Counter(o["status"] for o in tb.values())
for k in sorted(set(ca) | set(cb)):
lines.append(f'| {k} | {ca.get(k, 0)} | {cb.get(k, 0)} |')
lines.append(f'| total | {len(ta)} | {len(tb)} |')
lines.append(f'| elapsed | {da.get("elapsed_sec")}s | {db.get("elapsed_sec")}s |')
lines.append('')
def bucket(pred, title):
rows = [n for n in names
if pred(ta.get(n, {}).get('status', 'absent'),
tb.get(n, {}).get('status', 'absent'))]
if rows:
lines.append(f'## {title} ({len(rows)})')
lines.append('')
for n in rows:
sa = ta.get(n, {}).get('status', 'absent')
sb = tb.get(n, {}).get('status', 'absent')
lines.append(f'- `{n}` — {na}: {sa}, {nb}: {sb}')
lines.append('')
bucket(lambda a, b: a in BAD and b in BAD, 'Bad on both (likely frontend/state-tracker)')
bucket(lambda a, b: a in BAD and b == 'pass', f'Bad only on {na}')
bucket(lambda a, b: a == 'pass' and b in BAD, f'Bad only on {nb}')
bucket(lambda a, b: a == 'skip' and b == 'pass' or a == 'pass' and b == 'skip',
'Skip on one side only')
text = '\n'.join(lines) + '\n'
if args.out:
Path(args.out).write_text(text)
print(f'wrote {args.out}')
else:
print(text)
if __name__ == '__main__':
main()