27 lines
1022 B
Markdown
27 lines
1022 B
Markdown
# M14-04B Status
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status: done
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task: Chromium DPR 1/1.5/2/3 canvas and raycast consistency
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updated: 2026-08-19 America/New_York
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enablingTask: false
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parityStateChange: false
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## Scope
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Shared viewport DPR and CSS-bounds NDC helpers now drive the main-thread and Offscreen viewport
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boundaries. Chromium production verification ran at device scale factors 1, 1.5, 2 and 3; the
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declared renderer cap of 2 was applied, backing dimensions matched the browser canvas, CSS dimensions
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remained `679x321`, and the same center raycast selected the same object at every scale.
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## Evidence
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- `npm --prefix web run build` passed.
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- `npm --prefix web run test:chromium-dpr-consistency` passed: 2 protocol tests and 4 real Chromium
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production contexts.
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- Checker output: `chromium-dpr-ok dpr=1,1.5,2,3 css=679x321 selection=stable execution=DISABLED next=M14-04C`.
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- `npm --prefix web run typecheck` and `git diff --check` passed.
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## Next Task
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`M14-04C`: Chromium mouse/touch/pen pointer identity and cancellation contract.
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