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Vance IngallsandClaude Opus 4.6
8f97edb2b9
* fix(hdr): filter zero-opacity elements and support overflow:hidden clip rects in HDR compositor
Two bugs in the HDR render pipeline:
1. Child data-start elements inside a parent with opacity:0 were still
composited as independent layers, painting over content in later scenes.
Fix: filter elements with effective opacity 0 before groupIntoLayers().
2. CSS overflow:hidden on ancestor elements was ignored for HDR video layers,
causing videos inside clipped containers (e.g. split-screen halves) to
render full-frame. Fix: add clipRect to ElementStackingInfo, compute it
from ancestor overflow:hidden in queryElementStacking(), and crop the
source buffer to clip bounds before blitting in blitHdrVideoLayer().
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(hdr): move opacity filter into blit loop to preserve hide-list correctness
The previous approach filtered zero-opacity elements before groupIntoLayers(),
which broke the DOM screenshot hide-list — invisible video elements' <img>
replacements weren't properly hidden from sibling layer screenshots, causing
the vignelli-stacking regression.
Fix: keep all elements in groupIntoLayers() for correct hide-list generation.
Skip zero-opacity HDR elements only during the actual blit step with an early
`continue` in the compositing loop.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(hdr): route identity-matrix HDR elements through region blit for clip rect support
parseTransformMatrix returns a valid matrix even for untransformed HDR
elements (Chrome reports matrix(1,0,0,1,0,0)). This made the affine blit
path always run, bypassing the region blit path which is the only one that
applies clip rects from overflow:hidden ancestors.
Fix: detect identity matrices and route them through the region path so
the cropRgb48le clip logic is reachable for split-screen layouts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(hdr): handle translation-only matrices for clip rect support
The previous isIdentity check only caught matrix(1,0,0,1,0,0). Elements
with layout translation (e.g. right-half split at left:960px reporting
matrix(1,0,0,1,960,0)) still routed through the affine path where clip
rects are not applied.
Fix: check for translation-only matrices (scale=1, rotation=0, any tx/ty)
and route those through the region blit path. el.x/el.y from
getBoundingClientRect already include the translation, so the region path
handles positioning correctly.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* feat(render): auto-detect HDR from media probes, add --sdr flag
Replace the --hdr opt-in model with automatic detection. When no flags
are passed, the renderer probes all video/image sources and enables HDR
output if any HDR color space is detected. Existing --hdr flag becomes
a force override. New --sdr flag forces SDR output.
Behavior matrix:
(no flags) + HDR content → HDR output
(no flags) + SDR content → SDR output
--hdr → force HDR (defaults to HLG if no HDR sources)
--sdr → force SDR (skips probing)
--hdr --sdr → error
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Revert "feat(render): auto-detect HDR from media probes, add --sdr flag"
This reverts commit 69fb52196f.
* chore(hdr): simplify review fixes — remove redundant guard, add image clip warning
- Remove redundant viewportMatrix.length >= 6 check (parseTransformMatrix
always returns 6-element array or null)
- Add clip rect warning log to blitHdrImageLayer for parity with video path
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>