wyj
8cf6106127
Allow frames to finish refinement independently without aborting the movie. Report genuine refinement errors with generation and frame identifiers, and clarify the sample batch contract. Add a two-frame Schwarzschild regression covering unequal refinement progress. Validated Release and Debug make test suites and 640x360 rendering of the final eight free-fall frames in both builds.
157 lines
8.0 KiB
Python
157 lines
8.0 KiB
Python
#!/usr/bin/env python3
|
|
"""Exercise camera defaults/errors and single-frame/movie agreement (CPU PNG builds)."""
|
|
import os
|
|
from pathlib import Path
|
|
import struct
|
|
import subprocess
|
|
import sys
|
|
import tempfile
|
|
import zlib
|
|
|
|
BUILD = Path(sys.argv[1] if len(sys.argv) > 1 else 'build/Release').resolve()
|
|
ENV = dict(os.environ, OMP_NUM_THREADS='4')
|
|
|
|
|
|
def run(binary, *args, ok=True):
|
|
result = subprocess.run([str(binary), *map(str, args)], env=ENV,
|
|
capture_output=True, text=True)
|
|
if (result.returncode == 0) != ok:
|
|
raise AssertionError(f'{binary.name} {args}: {result.returncode}\n{result.stderr}')
|
|
return result
|
|
|
|
|
|
def image_payload(path, dimensions=(64, 48), allow_black=False):
|
|
data = path.read_bytes()
|
|
assert data[:8] == b'\x89PNG\r\n\x1a\n'
|
|
offset, compressed = 8, bytearray()
|
|
while offset < len(data):
|
|
count, kind = struct.unpack_from('>I4s', data, offset)
|
|
payload = data[offset + 8:offset + 8 + count]
|
|
if kind == b'IHDR':
|
|
assert struct.unpack_from('>II', payload) == dimensions
|
|
if kind == b'IDAT':
|
|
compressed.extend(payload)
|
|
offset += count + 12
|
|
raw = zlib.decompress(compressed)
|
|
assert raw, f'missing image data: {path}'
|
|
assert allow_black or any(raw), f'empty image: {path}'
|
|
return raw
|
|
|
|
|
|
def map_vertices(path):
|
|
data = path.read_bytes()
|
|
assert data[:8] == b'GRLENS\x01\x00'
|
|
assert struct.unpack_from('<Q', data, 32)[0] == 1
|
|
vertices, triangles = struct.unpack_from('<QQ', data, 64)
|
|
offset = 80
|
|
values = []
|
|
for _ in range(vertices):
|
|
values.append(struct.unpack_from('<9dI', data, offset))
|
|
offset += 76
|
|
return values, data[offset:offset + triangles * 28]
|
|
|
|
|
|
with tempfile.TemporaryDirectory(prefix='gr-camera-cli-') as directory:
|
|
tmp = Path(directory)
|
|
for backend in ('minkowski', 'schwarzschild'):
|
|
binary = BUILD / f'{backend}_sky'
|
|
help_text = run(binary, '--help').stdout
|
|
for option in ('--observer-position', '--observer-velocity', '--camera-roll-deg'):
|
|
assert option in help_text
|
|
assert '--observer-inward-speed' not in help_text
|
|
common = ['--catalog', 'assets/sky_grid_5deg.csv', '--width', 64,
|
|
'--height', 48, '--fov-deg', 80, '--exposure', 0.1,
|
|
'--coarse-cell-pixels', 8, '--refine-max-level', 0, '--psf-relative-tail', 1e-4]
|
|
def render(name, *options):
|
|
path = tmp / f'{backend}_{name}.png'
|
|
run(binary, *common, '--output', path, *options)
|
|
return image_payload(path)
|
|
|
|
# Equivalent independently specified and inferred camera geometry.
|
|
inferred = render('position', '--observer-position', -30, 0, 0)
|
|
explicit = render('explicit', '--observer-position', -30, 0, 0,
|
|
'--look-ra-deg', 0, '--look-dec-deg', 0)
|
|
angled = render('angle', '--look-ra-deg', 0, '--look-dec-deg', 0)
|
|
assert inferred == explicit == angled
|
|
pole = render('pole', '--observer-position', 0, 0, 30)
|
|
assert pole == render('pole_explicit', '--observer-position', 0, 0, 30,
|
|
'--look-ra-deg', 0, '--look-dec-deg', -90)
|
|
default = render('default')
|
|
pos = (0, 0, 0) if backend == 'minkowski' else (0, 0, 30)
|
|
assert default == render('default_explicit', '--observer-position', *pos,
|
|
'--look-ra-deg', 90, '--look-dec-deg', -90)
|
|
assert render('radius', '--observer-radius', 40) == render(
|
|
'radius_explicit', '--observer-radius', 40, '--look-ra-deg', 90,
|
|
'--look-dec-deg', -90)
|
|
for partial, value, ra, dec in [('--look-ra-deg', 37, 37, -90),
|
|
('--look-dec-deg', -23, 90, -23)]:
|
|
assert render('partial', partial, value) == render(
|
|
'complete', '--look-ra-deg', ra, '--look-dec-deg', dec)
|
|
errors = [
|
|
(['--observer-position', 1, 2], None),
|
|
(['--observer-position', 1, 2, 'nan'], None),
|
|
(['--observer-velocity', 0, 0, 'inf'], None),
|
|
(['--look-ra-deg', 'nan'], None),
|
|
(['--look-dec-deg', 'inf'], None),
|
|
(['--observer-radius', 'nan'], None),
|
|
(['--observer-radius', 0], None),
|
|
(['--camera-roll-deg', 'nan'], None),
|
|
(['--observer-position', 0, 0, 0], 'Cannot infer'),
|
|
(['--observer-position', 3, 4, 5, '--observer-radius', 30], 'mutually exclusive'),
|
|
(['--observer-velocity', 10, 0, 0], 'not timelike'),
|
|
(['--observer-inward-speed', 0], None),
|
|
(['--observer-track', 'missing.csv', '--observer-velocity', 0, 0, 0], 'cannot be combined'),
|
|
(['--frames-dir', tmp, '--look-ra-deg', 0], 'cannot be combined'),
|
|
(['--lens-map-input', 'missing.grlens', '--camera-roll-deg', 0], 'cannot be combined'),
|
|
]
|
|
if backend == 'schwarzschild':
|
|
errors += [(['--observer-position', 1.5, 0, 0, '--observer-velocity', -0.5, 0, 0], 'capture cutoff'),
|
|
(['--observer-position', 1.75, 0, 0], 'not timelike')]
|
|
render('inside', '--observer-position', 1.75, 0, 0,
|
|
'--observer-velocity', -0.5, 0, 0, '--look-ra-deg', 0, '--look-dec-deg', 0)
|
|
for options, message in errors:
|
|
missing_catalog = tmp / 'should_not_be_created.csv'
|
|
result = run(binary, '--catalog', missing_catalog, *options, ok=False)
|
|
if message:
|
|
assert message in result.stderr, result.stderr
|
|
assert not missing_catalog.exists(), result.stderr
|
|
assert 'PSF cache ready' not in result.stderr
|
|
track = tmp / f'{backend}.csv'
|
|
run(BUILD / f'test_observer_{backend}', track)
|
|
single_map, movie_map = tmp / 'single.grlens', tmp / 'movie.grlens'
|
|
single = render('moving', '--observer-position', 3, -4, 5,
|
|
'--observer-velocity', 0.2, -0.1, 0.3,
|
|
'--look-ra-deg', 37, '--look-dec-deg', -23,
|
|
'--camera-roll-deg', 19, '--lens-map-output', single_map)
|
|
run(binary, *common, '--observer-track', track, '--frames-dir', tmp,
|
|
'--frames-prefix', backend, '--duration', 0, '--fps', 1,
|
|
'--lens-map-output', movie_map)
|
|
movie = image_payload(tmp / f'{backend}_000000.png')
|
|
assert single == movie, f'{backend}: single/movie PNG mismatch'
|
|
a, ta = map_vertices(single_map)
|
|
b, tb = map_vertices(movie_map)
|
|
assert len(a) == len(b) and ta == tb
|
|
max_error = 0
|
|
for x, y in zip(a, b):
|
|
assert x[-1] == y[-1], 'ray classification mismatch'
|
|
max_error = max(max_error, *(abs(v - w) for v, w in zip(x[:-1], y[:-1])))
|
|
assert max_error < 1e-9, max_error
|
|
# A map import must still work without evaluating a camera/metric.
|
|
assert single == render('import', '--lens-map-input', single_map)
|
|
if backend == 'schwarzschild':
|
|
# Two inward-looking free-fall samples at r=6.2696 and r=3.1593.
|
|
# At 16:9 the latter frame finishes in generation 0, while the
|
|
# former still needs refinement. Finishing the empty batch used
|
|
# to abort the whole movie in generation 1.
|
|
mixed = Path(__file__).parent / 'fixtures/schwarzschild_mixed_refinement.csv'
|
|
result = run(binary, *common, '--height', 36, '--fov-deg', 60,
|
|
'--refine-max-level', 3, '--observer-track', mixed,
|
|
'--movie-track-samples', '--frames-dir', tmp,
|
|
'--frames-prefix', 'mixed', '--verbose')
|
|
assert 'Ray trace generation 1: frame 0 added' in result.stderr
|
|
assert 'Ray trace generation 0: frame 1 added' not in result.stderr
|
|
for frame in range(2):
|
|
image_payload(tmp / f'mixed_{frame:06d}.png',
|
|
dimensions=(64, 36), allow_black=True)
|
|
print(f'{backend}: CLI checks passed; single/movie PNG identical, map max error {max_error:.3g}', flush=True)
|