28 lines
1.8 KiB
Markdown
28 lines
1.8 KiB
Markdown
# Saved target natural timeout and input fixture
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**EXPERIMENTAL / PARTIALLY_FEASIBLE.** The [protocol and result](../../../docs/design/STEP20C_SAVED_TARGET_TIMEOUT_INPUT_PROBE.md)
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defines a single new Mosaic run with one natural timeout episode. The
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previous crossing campaign and its exhausted ledger are immutable historical
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evidence. This fixture reconstructs the pinned compositor privately, uses a
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fixed opaque XDG SHM H2 reference, and stores all generated data under one
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new `/tmp` LAB. No production source, package or installed library is changed.
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Run `prepare.sh` to reconstruct the private binaries without launching a
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compositor. Run the offline `test-budget.py` before the sole `run.py LAB`
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invocation. The runner requires two identical H2 captures before any
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transaction reservation, calculates no more than one relative camera delta,
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and copies its exact source into the run directory. `analyze.py LAB` derives
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structured results and SHA-256 manifests from retained raw files. Never
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reuse an old LAB or reset a consumed ledger.
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The sole run used `/tmp/swayfx-mosaic-nested-grab-iKwhINe5`. Its ledger
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records one run, one episode, one camera adjustment and eight captures.
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The exact executed Python source is saved as `runs/*/fixture-source.py`.
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The static reference and the target retained their real configure/ACK
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processing; the target held serial 50 until natural SwayFX timeout. Its
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crossing saved node rendered on H1, the whole H2 RGB image remained
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identical before/during/after, and the target tree was destroyed. One H2
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pointer sample reached the static reference; the visible H1 sample hit the
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saved scene buffer without a Wayland surface. Full damage and native GPU
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lifetime remain unqualified. `analyze.py` is offline only and may be rerun
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without spending a graphics budget; run it with `PYTHONDONTWRITEBYTECODE=1`.
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