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Vance Ingalls
8ffd007716
## Summary Tighten `hdr-regression` Window F `maxFrameFailures` from 5 → 0 now that Chunk 4 (matrix3d support + scene initial-state) has landed. ## Why Window F (transform + scale + border-radius on the video itself) was the remaining known-fail in the `hdr-regression` suite, baked into the golden so the suite stayed green while Chunk 4 was outstanding. After Chunk 4 fixed `parseTransformMatrix` (matrix3d support) and the shader-transitions initial-state, re-running the suite shows **0 failed frames** against the existing golden — the encoder is byte-deterministic, and Window F's GSAP rotation/scale happens to emit 2D `matrix()` rather than `matrix3d()`, so the same golden is still correct after the fix. Tightening the budget catches any drift in the layered HDR compositor immediately. ## What changed - `tests/hdr-regression/meta.json`: `maxFrameFailures` 5 → 0 (matches `hdr-hlg-regression`). - `tests/hdr-regression/README.md`: Window F row + Fix history section updated to reflect the new state. ## Test plan - [x] `bun run test --filter hdr-regression` — passes with 0 failed frames at the new budget. ## Stack Follow-up to Chunk 4 (transform & clipping). Reviewable separately so the budget tightening is decoupled from the code fix.
hdr-hlg-regression
Regression test that locks down end-to-end HDR HLG (BT.2020 ARIB STD-B67)
video rendering. Companion to hdr-regression (PQ), kept as a separate suite
so the HLG-specific encoder/metadata path stays tested in isolation.
What it covers
| Window | Time | Shape | Expected |
|---|---|---|---|
| A | 0.0 – 2.5 s | Baseline HLG video + DOM overlay | pass |
| B | 2.5 – 5.0 s | Wrapper opacity fade around HLG video | pass |
The test pins the contract that:
extractMediaMetadatareportsbt2020/arib-std-b67/limitedfor the HLG source (i.e. HLG is detected and not silently coerced to PQ).isHdrColorSpaceflips the orchestrator into the layered HDR path on the HLG signal.- The HLG source is decoded into
rgb48leand blitted under the SDR DOM overlay on every frame. - Wrapper-opacity composition (window B) does not break HLG pass-through.
hdrEncoderwrites HEVC Main10 /yuv420p10le/ BT.2020 HLG with the correct color tags (no PQ mastering display metadata for HLG).
The suite is intentionally short (5 s, two windows) — it exists to detect
regressions in the HLG-specific code path, not to enumerate every composition
shape (those live in hdr-regression).
Fixture
src/hdr-hlg-clip.mp4 — last 5 seconds of a user-recorded HEVC HLG clip,
remuxed (no re-encode) so the HLG color tags survive verbatim.
Running
cd packages/producer
bun run test hdr-hlg-regression
bun run test:update hdr-hlg-regression
In CI it runs in the hdr shard alongside hdr-regression
(see .github/workflows/regression.yml).