websem: close the SVG <feColorMatrix> row - #105
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WalkthroughThe change adds ChangesfeColorMatrix filter support
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: ⚪ Minimal · up to The SVG color-matrix support is merge-ready after normal checks and review; no actionable merge-blocking risk remains. Sequence Diagram(s)sequenceDiagram
participant SVGDocument
participant websem as websem filter compiler
participant rframe as FilterProgram
participant n0 as n0 paint pipeline
SVGDocument->>websem: provide feColorMatrix attributes
websem->>websem: parse values and resolve matrix
websem->>rframe: compile ColorMatrix graph node
rframe-->>websem: validate input count and coefficients
websem->>n0: provide compiled filter
n0->>n0: select restore and source-preflatten policy
n0-->>SVGDocument: render filtered output
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 53.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 45 functions across 10 files. (8 skipped: 8 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@crates/websem/tests/filter_contract.rs`:
- Around line 269-281: Strengthen the matrix helper around
resolved_filter(...).program() to assert the program contains exactly one node,
not merely that iter().next() exists, and verify every coefficient in the
returned ColorMatrix matrix is finite using is_finite(). Preserve the existing
input, color-space, and primitive-kind assertions.
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📒 Files selected for processing (18)
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Verdict
CLOSE/SPLIT: close only the SVG
<feColorMatrix>element row.This adds one checked, backend-neutral, one-input 4×5 matrix over non-premultiplied RGBA. The producer resolves all four static type members (
matrix,saturate,hueRotate,luminanceToAlpha), Blink's measured number-list/count/fallback behavior, straight-channel arithmetic, alpha creation, color-space placement, graph inputs, and hard primitive regions beforerframe. The painter receives only twenty finite row-major coefficients.The generic
type,values,in,result, primitive-region,color-interpolation-filters,filter, and<filter>rows remain open for their wider applicability, cascade, resource, host, or dynamics surface. No CSS property row closes.Measured pixel boundary
Chromium 149.0.7827.55 was probed through the shared hash-pinned capture module; every candidate also rendered through the actual
n0command.Twenty-seven committed Chromium cells cover the complete admitted grammar and semantic envelope. They move the corpus from 475 to 502 baked cells, retain 10 sampled frames, and move the named refusal register from 128 to 131 rows. Every new cell is byte-exact; no tolerance was added.
Gate sensitivity was proved by temporarily adding
0.25to painter coefficient 0.just gatethen rejected 25 of the 27 matrix cells, with up to 2,304 differing pixels and maximum channel delta 61. Restoring the coefficient returned all 502 cells to green.Verification
cargo test -p rframe -p websem -p n0 -p n0_clicargo fmt --all -- --checkcargo clippy --no-deps --workspace --exclude grida-canvas-wasm -- -D warningsjust bake,just gate, andjust statusfromfixtures/web-firstn0render for every committed sourcepnpm fmt:checkpnpm exec oxlint --deny-warningspnpm --filter www types:checkpnpm --filter www buildpnpm --filter @grida/reftest typecheckpnpm --filter @grida/reftest buildpnpm --filter @grida/reftest testNo Workflow runner is exposed in this environment. I reproduced its independent roles by hand: TICK/LAW found exactly one checklist delta, a backend-free checked fact, no second CSS matcher, three guarded precision boundaries, and no FLIP change; REPRO confirmed the 27
just addsource/oracle pairs, unchanged capture provenance, exact manifest/refusal counts, both admission guards, CLI renders, and the deliberate mutation failure/restoration.No conformance score was produced or inspected. FLIP is untouched.