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Vance Ingalls
d7c1050e44
## Summary Replace the trivial `hdr-pq` and `hdr-image-only` tests with two consolidated, time-windowed regression suites that exercise the full HDR pipeline. These goldens are the safety net for every other PR in this stack. ## Why The pre-existing HDR tests covered only a single full-bleed video or image with a static text label — none of the features that the HDR pipeline has to handle differently from SDR (opacity animation, z-ordered multi-layer compositing, transforms, border-radius clipping, shader transitions, multiple HDR sources, object-fit modes, mixed HDR+SDR layering, HLG transfer). This PR builds the missing safety net first so every subsequent fix can be proven correct. ## What changed - New `packages/producer/tests/hdr-regression/` (PQ, BT.2020, ~20 s, 1080p, 8 windows A–H): - A: static baseline (HDR video + DOM overlay) - B: wrapper-opacity fade - C: direct-on-`<video>` opacity tween (documents the Chunk 1 bug) - D: z-order sandwich (DOM → HDR → DOM) - E: two HDR videos side-by-side (pins PR #289) - F: rotation + scale + border-radius (documents the Chunk 4 bug) - G: `object-fit: contain` - H: shader crossfade between HDR video and HDR image - New `packages/producer/tests/hdr-hlg-regression/` (HLG, ARIB STD-B67, ~5 s, 2 windows A–B) — exercises the separate HLG LUT/OETF code path that previously had **zero** coverage. - New `scripts/generate-hdr-photo-pq.py` synthesizes `hdr-photo-pq.png` with a cICP chunk for BT.2020/PQ/full. - Removed `tests/hdr-pq/` and `tests/hdr-image-only/`. - Updated `.github/workflows/regression.yml` HDR shard to run the new pair sequentially. - All compositions follow the documented timed-element pattern (`data-start`, `data-duration`, `class="clip"` directly on each timed leaf — no wrapper inheritance). ## Test plan - [x] Goldens generated with `bun run test:update --sequential`. - [x] `ffprobe` confirms HEVC/yuv420p10le/bt2020nc/smpte2084 (PQ) and arib-std-b67 (HLG). - [x] Suite green with `maxFrameFailures` budgets that absorb the documented Chunk 1 / Chunk 4 known-fails — tightened in follow-up PRs in this stack. ## Stack Foundational PR for the HDR follow-ups stack (Chunk 0 of `plans/hdr-followups.md`). Every subsequent PR builds on this safety net.