NetterSilverandClaude Opus 5.5 adb1b43033 Speed up raster export: faster blur and spread passes ...

Shadows and layer blurs dominated PNG/JPG/WebP export time (gdb stack
sampling of the example files: about 45% in fx::box_blur_h, 13% in
fx::morph). Both now produce the same bytes, faster:

- fx::blur runs its three box passes per row while the row is in cache,
  works on whole pixels instead of bounds-checked bytes, skips fully
  transparent rows, transposes in cache-friendly column blocks, and
  splits rows and transposes across rayon on desktop for pixmaps of
  64K pixels and more, only when not already on a rayon worker (a band
  of render_view stays on its thread: no nested parallelism).
- fx::morph (shadow spread on layers that aren't one outline) uses the
  van Herk / Gil-Werman running max/min: constant work per pixel instead
  of 2r + 1.

Integer arithmetic and pass order are unchanged; new tests compare both
against the previous implementations byte for byte, including sizes on
the parallel path.

An ignored timing test exports every top-level frame of examples/ as
PNG, JPG and WebP at 2x through export_file:
cargo test --release -p figcraft-engine --lib export_timings -- --ignored --nocapture

Ryzen, 16 threads, Linux; median of 7 (min):
  PNG   2195 ms (2182) ->  992 ms (989)   -55%
  JPG   2880 ms (2560) -> 1550 ms (1535)  -46%
  WebP  1964 ms (1901) -> 1022 ms (1018)  -48%
  total 7035 ms (6677) -> 3567 ms (3555)  -49%
All 80 exported files (PNG, JPG, WebP, PDF, SVG) are byte-identical.

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

2026-10-27 17:43:23 +01:00

..

backdrop_shadow_tests.rs

M1: drop shadows under a background blur (#255)

2026-10-14 18:45:15 +03:00

backdrop_tests.rs

M3: paint and effects behaviour suite and fixes

2026-10-12 01:32:04 +07:00

backdrop.rs

M3: effects on groups: inner shadows and background blur

2026-10-13 13:36:54 +07:00

band_tests.rs

M3: progressive blur, inner shadows under strokes, noise and texture in SVG (#86)

2026-10-10 17:20:07 +07:00

blur.rs

M3: progressive blur, inner shadows under strokes, noise and texture in SVG (#86)

2026-10-10 17:20:07 +07:00

boolean_cache_tests.rs

#1184: boolean operands use the rounded per-side strokes too

2026-10-26 08:35:20 +07:00

boolean.rs

M4: live boolean editing, arc fields, shape builder on strokes, one-sided widths (#111)

2026-10-11 10:04:25 +07:00

bounds_memo_tests.rs

perf(render): look each layer up once per render

2026-10-16 13:20:53 +03:00

dots_tests.rs

M12: boards dot grid, re-attaching connector ends, curved connectors (#1249)

2026-10-26 11:52:16 +07:00

dots.rs

M12: boards dot grid, re-attaching connector ends, curved connectors (#1249)

2026-10-26 11:52:16 +07:00

draw.rs

M7: show a magnified image's pixels on the canvas

2026-10-26 03:23:56 -04:00

effect_order_tests.rs

M3: progressive blur, inner shadows under strokes, noise and texture in SVG (#86)

2026-10-10 17:20:07 +07:00

effects_behaviour_tests.rs

Draw layer blurs up to the documented 10,000 radius

2026-10-15 11:12:25 +00:00

export_depth.rs

Refuse incomplete SVG/PDF exports beyond the depth limit (#218)

2026-10-14 05:23:28 +07:00

fx.rs

Speed up raster export: faster blur and spread passes

2026-10-27 17:43:23 +01:00

gif_tests.rs

M6: animated GIF fills and TIFF images (#116)

2026-10-11 11:51:37 +07:00

glass_bench_tests.rs

perf(render): keep glass shapes a later render asks for again

2026-10-16 06:01:49 +07:00

glass_cut_tests.rs

perf(render): keep glass shapes a later render asks for again

2026-10-16 06:01:49 +07:00

glass.rs

perf(render): keep glass shapes a later render asks for again

2026-10-16 06:01:49 +07:00

grain_tests.rs

M3: effects fidelity: backdrop blur in clipped frames, exact shadow spread, glass, noise and texture (#69)

2026-10-10 11:59:59 +07:00

grain.rs

M3: paint and effects behaviour suite and fixes

2026-10-12 01:32:04 +07:00

group_effects_tests.rs

M3: effects on groups: inner shadows and background blur

2026-10-13 13:36:54 +07:00

image_budget_tests.rs

Scale down images past 16384 px a side instead of drawing nothing

2026-10-25 18:01:22 +00:00

image_profile_tests.rs

M3: embedded image colour profiles (#136)

2026-10-12 00:11:43 +07:00

image_profile.rs

M3: embedded image colour profiles (#136)

2026-10-12 00:11:43 +07:00

images.rs

Scale down images past 16384 px a side instead of drawing nothing

2026-10-25 18:01:22 +00:00

lib.rs

Merge pull request #840 from StrajnarFilip/feat/vector-drawable-export

2026-10-27 01:06:21 +07:00

lod_tests.rs

M7: show a magnified image's pixels on the canvas

2026-10-26 03:23:56 -04:00

lod.rs

perf(render): look each layer up once per render

2026-10-16 13:20:53 +03:00

magnified_image_tests.rs

M7: show a magnified image's pixels on the canvas

2026-10-26 03:23:56 -04:00

paint_behaviour_tests.rs

fix(render): text strokes follow their alignment (#615)

2026-10-15 19:36:39 -05:00

paint.rs

M3: paint and effects behaviour suite and fixes

2026-10-12 01:32:04 +07:00

pattern.rs

M7: show a magnified image's pixels on the canvas

2026-10-26 03:23:56 -04:00

progressive_tests.rs

M3: progressive blur, inner shadows under strokes, noise and texture in SVG (#86)

2026-10-10 17:20:07 +07:00

retained_edit_tests.rs

M8: retained canvas correctness (#89)

2026-10-10 18:40:26 +07:00

retained_tests.rs

M3: progressive blur, inner shadows under strokes, noise and texture in SVG (#86)

2026-10-10 17:20:07 +07:00

retained.rs

M7: show a magnified image's pixels on the canvas

2026-10-26 03:23:56 -04:00

rtl_list_tests.rs

M4: rotated frame labels; right-to-left list markers (#95)

2026-10-10 21:58:01 +07:00

shadow.rs

M3: effects on groups: inner shadows and background blur

2026-10-13 13:36:54 +07:00

solo_tests.rs

M6: Dev Mode compare changes, focus view, annotation categories (#97)

2026-10-10 23:29:17 +07:00

spread_tests.rs

M3: effects fidelity: backdrop blur in clipped frames, exact shadow spread, glass, noise and texture (#69)

2026-10-10 11:59:59 +07:00

tests.rs

M4: individual stroke weights follow the corner radius like CSS borders

2026-10-22 11:20:24 +02:00

width_tests.rs

M4: variable width strokes (#58)

2026-10-10 10:12:21 +07:00