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LEDMatrix/test/test_vegas_coordinator_iteration.py
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ChuckandClaude Opus 5.5 7f9c73e9aa fix(vegas): smooth Vegas scroll pacing -- whole pixels per refresh, measured refresh, off-thread preview writes (#628)
Vegas scrolls a whole number of pixels per panel refresh, locked to SwapOnVSync, against the refresh the panel really holds (measured from swap gaps), instead of blending sub-pixel positions against the refresh cap. The web preview PNG is encoded off the render thread while scrolling, with writes ordered and retried. On hdpi, late frames fell from 6.3% to 0.7%. See docs/SCROLL_PERFORMANCE.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-24 19:38:22 -04:00

58 lines
2.2 KiB
Python

"""run_iteration() does no per-iteration static-mode bookkeeping.
Every iteration used to rebuild a set of STATIC-mode plugins -- asking each
plugin for its display mode and logging the result at INFO -- that nothing
ever read. The static pause is driven by _check_static_plugin_trigger(), which
looks at the next segment, not at that set.
"""
import logging
import threading
from types import SimpleNamespace
from unittest.mock import MagicMock
from src.plugin_system.base_plugin import VegasDisplayMode
from src.vegas_mode.config import VegasModeConfig
from src.vegas_mode.coordinator import VegasModeCoordinator
def _coordinator(plugins):
coord = VegasModeCoordinator.__new__(VegasModeCoordinator)
coord.vegas_config = VegasModeConfig.from_config({'display': {'vegas_scroll': {
'enabled': True, 'max_cycle_duration': 0}}})
coord.render_pipeline = MagicMock()
# The loop paces itself from these (#628); a MagicMock can't be compared.
coord.render_pipeline.frame_interval = 0.0
coord.render_pipeline.target_fps = 90
coord.stream_manager = MagicMock()
coord.display_manager = MagicMock()
coord.plugin_manager = SimpleNamespace(plugins=plugins, get_plugin=plugins.get)
coord.stats = {'cycles_completed': 0, 'interruptions': 0}
coord._state_lock = threading.Lock()
coord._is_active = True
coord._is_paused = False
coord._should_stop = False
coord._fps_last_health_log = 0.0
coord._fps_was_degraded = False
coord._live_priority_check = None
coord._live_priority_active = False
coord._interrupt_check = None
coord._interrupt_check_interval = 10
coord._update_callback = None
coord._update_tick_running = False
coord._check_static_plugin_trigger = lambda: None
coord.run_frame = lambda: True
return coord
def test_an_iteration_does_not_poll_every_plugin_for_its_mode(caplog):
static = MagicMock()
static.get_vegas_display_mode.return_value = VegasDisplayMode.STATIC
coord = _coordinator({'static-plugin': static})
with caplog.at_level(logging.INFO, logger='src.vegas_mode.coordinator'):
assert coord.run_iteration() is True
static.get_vegas_display_mode.assert_not_called()
assert not any('Static mode plugins' in r.getMessage() for r in caplog.records)