llduyll10andClaude Opus 5.5 f985b81300 Layer style: an Outside stroke at Fill below 100 % leaves the interior clear (#906) ...

Fill 0 % + an Outside stroke is Photoshop's "outline only" look, but on pixel
layers the stroke lay beneath the whole interior at full coverage, relying on
the layer composited on top to hide it. With the fill lowered the interior
showed the stroke colour (a solid disc instead of a ring).

The share beneath an interior pixel is now (1 - a) / (1 - c), with a the
shape's coverage and c the layer's alpha after fill: 1 under an opaque
layer (100 % fill renders exactly as before, so PSD oracles don't move),
1 - a at 0 % fill. CPU compositor and the wgpu shader agree (the layer's
alpha now rides along the coverage seed for pixel layers too).

Tests: compose regression at 8/16/32-bit (0 %, 50 %, 100 % fill), and a GPU
parity case at fill 0 and 0.5 (fails without the shader change).

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

2026-10-08 16:38:35 -04:00

..

src

Layer style: an Outside stroke at Fill below 100 % leaves the interior clear (#906)

2026-10-08 16:38:35 -04:00

tests

Layer style: an Outside stroke at Fill below 100 % leaves the interior clear (#906)

2026-10-08 16:38:35 -04:00

Cargo.toml

GPU: fall back to Rgba16Float when Rgba32Float isn't renderable (#7, #4) (#22)

2026-10-04 02:27:54 -04:00