Valentin KleinandClaude Opus 5.5 9b3c6359ae perf: Select > Modify > Feather/Smooth on 24 MP within budget (#2873) (#2882) ...

The blur itself was already parallel (9-15 ms on 24 MP); most of the
command was serial glue around it. Modify copied the mask into a padded
buffer and back out sample by sample even with no padding, and combine
built a full-canvas byte buffer, scanned it, then copied it into tiles
on one thread.

- modify: use the mask as is when the selection is clear of the canvas
  edge (pad 0); pad and crop row by row otherwise.
- combine / mask_to_surface: fill selection tiles in parallel straight
  from the mask, a row at a time; fully selected tiles share one
  copy-on-write tile.

Bit-identical: the per-sample oracles (combine, now with whole tiles,
and the old pad/crop) are compared in tests.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-11 07:48:51 -04:00

..

baseline.json

Fast Select › Modify › Smooth and Feather (part of #211) (#280) (#280)

2026-10-05 19:59:11 -04:00

budgets.toml

perf: Select > Modify > Feather/Smooth on 24 MP within budget (#2873) (#2882)

2026-10-11 07:48:51 -04:00