3 people ab15e4ea96 Curved shapes no longer report bounds 1 px too wide (#2537) (#2641) ...

* Drop f32 round-off coverage in the vector rasterizer (#2537)

Each row's cell accumulator is prefix-summed in f32. A left boundary adds
coverage and the right boundary subtracts it, but for curved or off-grid
edges the two don't cancel exactly, leaving ~1e-7 coverage in the pixel
just past the shape. Shape layers wrote the fill colour there (alpha
rounding to 0 at 8/16-bit, ~1e-7 at 32-bit), so content bounds and
shape.info reported curved shapes one pixel too wide.

Snap coverage below 1e-6 to 0 when writing a row. That is under half a
16-bit step, so 8- and 16-bit coverage values are unchanged; only the
residue pixels go away. Selections, vector masks and strokes share the
rasterizer and get the same fix.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Rasterizer: NaN coverage becomes 0, not full (#2537)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Fabio Lussi <198260595+itrycodinganditsbad@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-10 13:41:51 -04:00

..

examples

Expose native shape stroke controls with staged previews (#2218)

2026-10-10 06:42:52 -04:00

src

Curved shapes no longer report bounds 1 px too wide (#2537) (#2641)

2026-10-10 13:41:51 -04:00

Cargo.toml

continued wip

2026-09-30 09:37:18 -04:00