mtlcl410andClaude Opus 5.5 0e75ad08c8 M2: a page past the rasterizer's coverage renders what fitted instead of failing (view.render-error-isolation) ...

vello_cpu keeps every path's coverage (alpha) values in one buffer until
the scene is rasterized, and a strip packs its index into that buffer in
31 bits; Strip::new asserts it fits. A page that painted one form 2^22
times over (22 nested forms, each drawing the next twice) grew the
buffer past 2^31 values at about 7 GB and panicked, and the page failed.

- vello_common (2): StripStorage::room_for_path{,_within} says whether
  one more path's coverage, at most the whole surface counted twice,
  still fits below that limit or a smaller one.
- vello_cpu (1): the single-threaded dispatcher leaves out fills,
  strokes, fast rectangles and layer clips once there is no room,
  records it (RenderContext::coverage_full) and can be kept to fewer
  values (set_max_coverage).
- hayro (31): RenderSettings::max_coverage passes that limit down, and
  a page whose paths were left out reports
  InterpreterWarning::ContentTruncated, which PdfCraft already shows as
  content skipped past the page's safety budget.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Pq7HyDBXygTf7jcqdsjcfn

2026-11-06 22:03:27 +08:00

..

acrobat-features.toml

M2: a page past the rasterizer's coverage renders what fitted instead of failing (view.render-error-isolation)

2026-11-06 22:03:27 +08:00