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test(canvas): [PKG-CANVAS-02] reproduce frame leaks and native pixel boundaries

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Harvey Zhao committed 2026-09-12 12:43:39 +08:00
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commit e931520e66
11 files changed
+642 -12
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refactor/risks.json
+23 -3
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@@ -3343,7 +3343,7 @@
{
"id": "CANVAS-LIFE-01",
"title": "Canvas proxy pending draw, bitmap and delayed subscriptions lack terminal ownership",
"confirmation": "source-observed",
"confirmation": "reproduced",
"owners": [
"PKG-CANVAS-02",
"PKG-CANVAS-03",
@@ -3355,8 +3355,11 @@
"evidence": [
"refactor/baselines/canvas-contract.md",
"refactor/baselines/canvas-release.json",
"refactor/changes/2026-09-12-PKG-CANVAS-01-contract.md"
]
"refactor/changes/2026-09-12-PKG-CANVAS-01-contract.md",
"refactor/changes/2026-09-12-PKG-CANVAS-02-tests.md",
"refactor/baselines/canvas-behavior-validation.json"
],
"workspaceState": "33 historical Node checks reproduce pending bitmap, concurrent RAF, close omission, reentrant destroy and delayed/partial registration leaks; 18 real browser core/proxy combinations observe RAF continuing after destroy inside callback. Candidate fixes pending task 03."
},
{
"id": "CANVAS-TYPE-01",
@@ -3391,6 +3394,23 @@
"refactor/baselines/canvas-release.json",
"refactor/changes/2026-09-12-PKG-CANVAS-01-contract.md"
]
},
{
"id": "CANVAS-PIXEL-01",
"title": "Historical Canvas proxy produces transparent frames with detached native video in tested WebKit",
"status": "open",
"confirmation": "reproduced",
"owners": [
"PKG-CANVAS-03",
"PKG-CANVAS-05"
],
"compatibleResolution": "Verify actual pixel recovery with explicit backing media ownership and stable public canvas surface; do not infer that attaching after playback fixes it.",
"closureCriteria": "Candidate native proxy pixels, pause/seek/source switch and terminal cleanup pass all three engines; device limitations remain explicit.",
"evidence": [
"refactor/changes/2026-09-12-PKG-CANVAS-02-tests.md",
"refactor/baselines/canvas-behavior-validation.json"
],
"workspaceState": "All six historical WebKit proxy combinations produce alpha0 while time advances. Separate native video mounted before play yields alpha255; detached native control alpha0. Chromium/Firefox both paths yield255. These historical observations do not prove candidate fix or all Safari device behavior."
}
]
}