perf: テクスチャ効果の距離判定を軽くする #1257

crates/effects/src/pixel/texture.rs

@@ -189,6 +189,18 @@ pub(super) fn luma(c: [f32; 3]) -> f32 {
     0.299 * c[0] + 0.587 * c[1] + 0.114 * c[2]
 }
 
+/// Strict distance ordering, with the original hypot comparison at rounding/tie boundaries.
+fn distance_less(a2: f64, b2: f64, exact: impl FnOnce() -> (f64, f64)) -> bool {
+    // Cell distances are small and finite. Preserve hypot's ordering at rounding/tie
+    // boundaries, without computing it for every candidate of every pixel.
+    if b2.is_finite() && (a2 - b2).abs() <= 8.0 * f64::EPSILON * (a2 + b2) {
+        let (a, b) = exact();
+        a < b
+    } else {
+        a2 < b2
+    }
+}
+
 /// The two random points nearest to (`u`, `v`) (in cells), `point(i, j)` being cell (`i`, `j`)'s,
 /// found among the cells [`AROUND`] the one holding it.
 fn nearest_two(u: f64, v: f64, around: &mut Around<Point>, point: impl Fn(i64, i64) -> Point) -> Option<(Point, Point)> {
@@ -196,15 +208,17 @@ fn nearest_two(u: f64, v: f64, around: &mut Around<Point>, point: impl Fn(i64, i
     let mut best: [(f64, Option<Point>); 2] = [(f64::INFINITY, None); 2];
     for (k, (di, dj)) in AROUND.iter().enumerate() {
         // A cell farther than the second point so far can't hold a nearer one.
-        if gap(i.wrapping_add(*di), u).hypot(gap(j.wrapping_add(*dj), v)) >= best[1].0 {
+        let (gx, gy) = (gap(i.wrapping_add(*di), u), gap(j.wrapping_add(*dj), v));
+        let exact = |p: Option<Point>| p.map_or(f64::INFINITY, |p| (p.x - u).hypot(p.y - v));
+        if !distance_less(gx * gx + gy * gy, best[1].0, || (gx.hypot(gy), exact(best[1].1))) {
             continue;
         }
         let Some(p) = around.get((i, j), k, &point) else { continue };
-        let d = (p.x - u).hypot(p.y - v);
-        if d < best[0].0 {
-            best = [(d, Some(p)), best[0]];
-        } else if d < best[1].0 {
-            best[1] = (d, Some(p));
+        let d2 = (p.x - u) * (p.x - u) + (p.y - v) * (p.y - v);
+        if distance_less(d2, best[0].0, || (exact(Some(p)), exact(best[0].1))) {
+            best = [(d2, Some(p)), best[0]];
+        } else if distance_less(d2, best[1].0, || (exact(Some(p)), exact(best[1].1))) {
+            best[1] = (d2, Some(p));
         }
     }
     Some((best[0].1?, best[1].1?))
@@ -574,3 +588,53 @@ pub(super) fn texturizer(
         *p = premultiply(lit(straight(*p), strength * (facing(slope, toward) + ridge)), f32::from(p[3]) / 255.0);
     });
 }
+
+#[cfg(test)]
+mod nearest_tests {
+    use super::*;
+
+    /// Compare with all 25 candidates, without the production distance-pruning shortcut.
+    fn brute_force(u: f64, v: f64, point: &impl Fn(i64, i64) -> Point) -> Option<(Point, Point)> {
+        let (i, j) = (cell(u)?, cell(v)?);
+        let mut candidates: Vec<_> = AROUND
+            .iter()
+            .map(|(di, dj)| {
+                let p = point(i.wrapping_add(*di), j.wrapping_add(*dj));
+                ((p.x - u).hypot(p.y - v), p)
+            })
+            .collect();
+        candidates.sort_by(|a, b| a.0.total_cmp(&b.0));
+        Some((candidates.first()?.1, candidates.get(1)?.1))
+    }
+
+    #[test]
+    fn nearest_points_match_all_candidates_at_cell_and_rounding_boundaries() {
+        let mut queries = vec![];
+        for y in -20..=20 {
+            for x in -24..=24 {
+                queries.push((f64::from(x) / 13.0, f64::from(y) / 11.0));
+            }
+        }
+        queries.extend([
+            (0.0, 0.0),
+            (0.5, 0.5),
+            (1.0 - f64::EPSILON, -1.0),
+            (1.0 + f64::EPSILON, -1.0 - f64::EPSILON),
+            (4.0e6, -4.0e6),
+            (1.0e14 + 0.25, -1.0e14 + 0.5),
+            (f64::INFINITY, 0.0),
+            (f64::NAN, 0.0),
+        ]);
+        for pattern in 0..3 {
+            let point = |i: i64, j: i64| match pattern {
+                0 => point_in(SALT_CRACKS, i, j),
+                1 => Point::new(i as f64 + 0.5, j as f64 + 0.5),
+                _ => Point::new(i as f64, j as f64),
+            };
+            let mut around = Around::new();
+            for &(u, v) in &queries {
+                assert_eq!(nearest_two(u, v, &mut around, point), brute_force(u, v, &point), "pattern {pattern} at ({u}, {v})");
+            }
+        }
+    }
+}

crates/render/src/fx.rs

@@ -1116,6 +1116,46 @@ mod tests {
         assert_eq!(b.pixels, c.pixels);
     }
 
+    /// Reproduce #1257's moving, filtered rectangle without reusing a static frame's raster.
+    /// Run with `cargo test -p vectorcraft-render texture_drag_perf -- --ignored --nocapture`.
+    #[test]
+    #[ignore = "manual timing probe; wall-clock performance depends on machine load"]
+    fn texture_drag_perf() {
+        for effect in ["texture.craquelure", "texture.mosaicTiles", "texture.stainedGlass"] {
+            let mut base = Document::new(600.0, 500.0);
+            base.color_mode = vectorcraft_doc::ColorMode::Cmyk;
+            let (layer, id) = (base.layers[0].id, base.alloc_id());
+            let mut n = Node::path(
+                id,
+                shapes::rectangle(Rect::new(100.0, 100.0, 309.298, 370.938)),
+                Appearance::basic(Paint::solid(Color::cmyk(0.0, 1.0, 1.0, 0.0)), Paint::solid(Color::BLACK), 1.0),
+            );
+            n.appearance.effects = vec![
+                Effect { id: "stylize.roundCorners".into(), params: json!({"radius": 25.175}), visible: true },
+                Effect { id: effect.into(), params: json!({}), visible: true },
+            ];
+            base.insert(Some(layer), 0, n).unwrap();
+            let opts = RenderOptions { background: Some([255, 255, 255, 255]), ..Default::default() };
+            let view = Affine::scale(1.9007 * 1.5);
+            let mut r = Renderer::new();
+            r.threads = crate::default_threads();
+            let mut ms = vec![];
+            for frame in 0..9 {
+                let mut doc = base.clone();
+                doc.node_mut(id).unwrap().transform(Affine::translate((3.0 + f64::from(frame) * 0.75, f64::from(frame) * 0.5)), false);
+                let start = std::time::Instant::now();
+                let image = r.render(&doc, 1800, 1500, view, &opts);
+                let time = start.elapsed().as_secs_f64() * 1000.0;
+                if frame > 0 {
+                    ms.push(time);
+                }
+                std::hint::black_box(image);
+            }
+            ms.sort_by(f64::total_cmp);
+            println!("{effect}: moved CMYK rounded rectangle at 190.07%, DPI 1.5, 1800x1500: median {:.2} ms; samples {ms:?}", (ms[3] + ms[4]) * 0.5);
+        }
+    }
+
     #[test]
     fn photoshop_filters_on_content_larger_than_the_budget() {
         // Zoomed in 200×: the 40 pt square covers 8000 × 8000 px around a 200 × 200 view.

docs/gaps.md

@@ -1,6 +1,6 @@
 # Gaps
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (G1: Curvature point display improved (#1236, in part); estimates unchanged; G4: full-name font matching (#1258); Windows font-service QA pending; estimate unchanged; G11: no-op anchor Align keeps history and saved state (#1180 follow-up); estimates unchanged; G1: dedicated Eyedropper cursor and precise-cursor checks (#1269); estimates unchanged; G1: Eyedropper reads visible locked and outside-isolation sources (#1251); estimate unchanged; G11: Direct Selection segment Delete (#1278); estimates unchanged; G1: painted strokes regain the existing default after None/zero-width inheritance (#1253); estimate unchanged; G15: large-selection edits, cached live effects and faster Pathfinder, #1173; G4: proportional vertical metrics done, #966; G11: Shape Builder merge seams on grids of lines fixed, #893; scaled text controls corrected, #1034; group font-size preservation deferred) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (G15: texture-effect distance searches optimized (#1257); idle-machine/platform drag QA still pending; estimate unchanged; G1: Curvature point display improved (#1236, in part); estimates unchanged; G4: full-name font matching (#1258); Windows font-service QA pending; estimate unchanged; G11: no-op anchor Align keeps history and saved state (#1180 follow-up); estimates unchanged; G1: dedicated Eyedropper cursor and precise-cursor checks (#1269); estimates unchanged; G1: Eyedropper reads visible locked and outside-isolation sources (#1251); estimate unchanged; G11: Direct Selection segment Delete (#1278); estimates unchanged; G1: painted strokes regain the existing default after None/zero-width inheritance (#1253); estimate unchanged; G15: large-selection edits, cached live effects and faster Pathfinder, #1173; G4: proportional vertical metrics done, #966; G11: Shape Builder merge seams on grids of lines fixed, #893; scaled text controls corrected, #1034; group font-size preservation deferred) · **Target:** Adobe Illustrator 2026 (30.x)
 
 Every known shortfall against Illustrator, one entry each, **ranked by how much it stops a professional from
 switching**. This is the work list: unless you were given a task, pick the highest-ranked gap you can make
@@ -179,6 +179,7 @@ from G14 and the budget run of G15: **~170–270 h** one agent, ~50–80 h wall
 
 ## G15 Performance budgets and a GPU renderer
 
+- **Improved (#1257):** Craquelure, Mosaic Tiles and Stained Glass reuse squared distances during nearest-cell searches, with the original distance ordering retained near rounding/tie boundaries. A brute-force boundary regression and full-viewport pixel comparisons agree with the old result. `texture_drag_perf` reproduces a moved CMYK rounded rectangle at 190.07% and DPI 1.5; timings from a busy development machine are supporting evidence, with idle Windows drag QA still pending.
 - **Missing:** an idle-machine run of `vectorcraft-cli perf` at 50k paths (last: 2026-10-11 at 25k paths, every
   budget met, 400% zoom 12.3 ms against 16 ms, measured), a spatial index for zoomed-in frames, dirty-region
   rendering, the GPU backend spike (M5). Large-selection edits, cached live effects and Pathfinder Trim, Merge,
@@ -217,6 +218,7 @@ from G14 and the budget run of G15: **~170–270 h** one agent, ~50–80 h wall
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | G15: texture-effect distance searches optimized (#1257); idle-machine/platform drag QA still pending; estimate unchanged |
 | 2026-10-12 | minor | G1: Curvature point display improved; existing-path interpolation request remains open (#1236, in part); estimates unchanged |
 | 2026-10-12 | minor | G4: full-name font matching and Missing Fonts searches verified (#1258); Windows font-service QA pending; estimate unchanged |
 | 2026-10-12 | minor | G11: no-op anchor Align no longer consumes Undo, clears Redo or marks saved paths modified (#1180 follow-up); estimate unchanged |

docs/roadmap.md

@@ -1,6 +1,6 @@
 # Roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (M2: Curvature point display improved (#1236, in part); estimates unchanged; M7: full-name font matching (#1258); Windows font-service QA pending; estimates unchanged; M1: no-op anchor Align keeps Undo, Redo and saved state (#1180 follow-up); estimates unchanged; M14: dedicated Eyedropper cursor (#1269); estimates unchanged; M3: Eyedropper reads visible locked and outside-isolation sources (#1251); estimates unchanged; M2: Direct Selection segment picks and Delete (#1278); estimates unchanged; M3: adding paint to an unpainted zero-width stroke restores 1 pt (#1253); estimates unchanged; M12: graph designs, graph data, Graph Type and label options; M14: native macOS save Format menu, #866; M6: compound appearance and member fill-rule fixes, #1197; estimates unchanged; M9: PDF raster-effect cap warnings; G11: #893 fixed, #937 open; M7: accurate character controls after scaling, #1034; estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (M5: squared-distance texture redraws (#1257); clean-machine/platform drag measurements still pending; estimates unchanged; M2: Curvature point display improved (#1236, in part); estimates unchanged; M7: full-name font matching (#1258); Windows font-service QA pending; estimates unchanged; M1: no-op anchor Align keeps Undo, Redo and saved state (#1180 follow-up); estimates unchanged; M14: dedicated Eyedropper cursor (#1269); estimates unchanged; M3: Eyedropper reads visible locked and outside-isolation sources (#1251); estimates unchanged; M2: Direct Selection segment picks and Delete (#1278); estimates unchanged; M3: adding paint to an unpainted zero-width stroke restores 1 pt (#1253); estimates unchanged; M12: graph designs, graph data, Graph Type and label options; M14: native macOS save Format menu, #866; M6: compound appearance and member fill-rule fixes, #1197; estimates unchanged; M9: PDF raster-effect cap warnings; G11: #893 fixed, #937 open; M7: accurate character controls after scaling, #1034; estimates unchanged) · **Target:** Adobe Illustrator 2026 (30.x)
 
 Forward-looking plan. Where VectorCraft stands is in [`ROADMAP.md`](../ROADMAP.md) and
 [target-app-parity.md](target-app-parity.md); the ranked work list is [gaps.md](gaps.md). Hours are Opus 5.5
@@ -57,7 +57,7 @@ Checked 2026-10-10 from the code, tests and open issues; no workflow fails, so V
 | M3 | Paint & appearance (swatches, color, gradient, stroke, appearance, transparency, styles) | ✅ done (M3.7–M3.98): swatches, groups, libraries, tints, Lab spots and Registration; Color Picker, Color panel, Color Guide, Color Themes, Edit Colors and Recolor Artwork; gradients that follow every transform, the annotator, linked stops, freeform gradients, focal points, gradients on strokes and Expand; stroke geometry, arrowheads, dashes fitted to corners, stroke on type, width profiles and the Width tool, Scale Strokes and preview bounds; Appearance targeting, container appearance, target circles, Expand Appearance; knockout, isolation, blend accuracy, CMYK blending, overprint, Attributes, masks and clipping, Flatten Transparency; graphic styles, links and libraries. Left: freeform and mixed spot/process gradients export as stops or process colours to SVG/PDF; confirm the Scale Strokes & Effects default | 4–8 |
 | M3 | Paint & appearance (swatches, color, gradient, stroke, appearance, transparency, styles) | ✅ done (M3.7–M3.98): swatches, groups, libraries, tints, Lab spots and Registration; Color Picker, Color panel, Color Guide, Color Themes, Edit Colors and Recolor Artwork; gradients that follow every transform, the annotator, linked stops, freeform gradients, focal points, gradients on strokes and Expand; visible strokes when paint is added to inherited None/zero-width art (#1253); stroke geometry, arrowheads, dashes fitted to corners, stroke on type, width profiles and the Width tool, Scale Strokes and preview bounds; Appearance targeting, container appearance, target circles, Expand Appearance; knockout, isolation, blend accuracy, CMYK blending, overprint, Attributes, masks and clipping, Flatten Transparency; graphic styles, links and libraries. Left: freeform and mixed spot/process gradients export as stops or process colours to SVG/PDF; confirm the Scale Strokes & Effects default | 4–8 |
 | M4 | Files (native, SVG, PDF, raster, Export for Screens, clipboard interop) | ✅ done (M4.14–M4.98 on 2026-10-05): Save As/Save a Copy/Revert/templates, Data Recovery and background save, SVG import and export fidelity (units, text, symbols, filters, SVGZ, Preserve Editing, SVG Options), PDF import (colours, layers, masks, editable text, security) and export (presets, marks, bleed, ICC and output intent, raster effects, subset fonts, PDF/X-1a, X-3 and X-4, PDF layers, overprint, page thumbnails, fast web view, PDF 1.3), Place and Links, Package, EPS and DXF in and out, EMF/WMF, TIFF/BMP/Targa/PSD/GIF/PNG-8 export, Print and print presets, slices, Save for Web, Asset Export, clipboard flavours, File Info; AF.1–AF.4 add Affinity import (native layers, artboards, vectors, text and images from Affinity 1–3 files; the embedded preview only as a warned fallback; AF.4 expands current `.af` fixtures and every-board round-trip validation). Left: DWG (use DXF), PSD placement as layers, overprint read back from PDF, Affinity export, polish | 3–6 (existing scope; Affinity export unestimated) |
-| M5 | Performance | 🟡 background render + caches + MT done; `vectorcraft-cli bench` and `vectorcraft-cli perf` (budget suite); file format v2 opens 3× faster (50k paths: 722 → 244 ms); raster effects (glows, shadows, blur, feather) no longer force the whole frame single-threaded (filtered offscreen per effect, verified equal to the single-threaded reference); effect-heavy demos need a clean-machine benchmark; dirty-region rendering, GPU backend spike pending | 15–25 |
+| M5 | Performance | 🟡 background render + caches + MT done; `vectorcraft-cli bench` and `vectorcraft-cli perf` (budget suite); file format v2 opens 3× faster (50k paths: 722 → 244 ms); raster effects (glows, shadows, blur, feather) no longer force the whole frame single-threaded (filtered offscreen per effect, verified equal to the single-threaded reference); Craquelure/Mosaic Tiles/Stained Glass distance searches optimized with pixel-invariance checks and the `texture_drag_perf` probe (#1257); effect-heavy demos need a clean-machine benchmark; dirty-region rendering, GPU backend spike pending | 15–25 |
 | M6 | Path operations (Pathfinder, Shape Builder, offset…) | ✅ mostly done (Compound appearance and member fill-rule edits verified (#1197); Boolean precision on almost-horizontal edges fixed and the property tests made deterministic; Shape Builder gap detection, large-offset bug open) | 3–6 |
 | M7 | Type (point/area/path, editing, styles, OpenType, threading, glyphs) | 🟡 Document-point character controls after object/group scaling (#1034; optional font-size preservation remains separate), Character/Paragraph Styles, per-paragraph paragraph attributes, Area Type Options (with Width/Height, Auto Size and Shrink Text to Fit; overflow reported to agents and vertical Align), type areas resized by their handles and reshaped with Direct Selection, threaded text, Fit Headline, Glyphs, OpenType panel, Find Font, installed system fonts in every font menu (fonts registered with Windows outside its font folders, the XDG and Flatpak host font folders on Linux, and fonts installed while the app runs, listed when it comes back to the front; searchable; the Character and Properties menus show each family's sample of the selected text, preview it live under the pointer or ↑/↓, filter by script and kind, list a family's styles, and star favourites; the Glyphs panel and Find Font's Replace With use the same menu without the live preview) and found by name on open/import (full-name aliases and Missing Fonts searches verified, #1258; Windows font-service QA pending), variable fonts' named instances as styles, CJK names in the UI, input methods (marked text in place, candidate window at the caret; Japanese IME), Text Wrap (offset, invert, both sides of an object; follows edits), Type on a Path effects and Options with draggable start/centre/end brackets (slide, flip), tab stops + Tabs panel (Above Text floats it over the selected text, its ruler at the canvas zoom so stops line up with the columns, #729), inline symbols in text (beyond parity), Hebrew/Arabic bidirectional text, Paragraph Direction, Every-line/Single-line Composer per object (ragged text too) done; tab leaders, spell check, vertical type pending | 45–60 |
 | M8 | Transform & distort (Puppet Warp, Liquify tools, Envelopes, Blends, Perspective Grid) | ✅ done (M8.1–M8.20 on 2026-10-06, fidelity pass): Liquify Tool Options with one shared brush, pen pressure, hold-to-apply, a safe scope and incremental strokes; tool options that last; Puppet Warp rotation, multi-select, Control bar and a rest-shape session that follows Undo; Width tool on compound paths; Envelope dialogs with preview, Reset with Warp/Mesh, full Envelope Options, type/images/symbols/appearance/gradients/patterns distorted on canvas and in every export, warps that keep their frame, Edit Contents, mesh handles and Control bar; Blend Options, anchor-targeted Blend tool, editable spine, keys picked on the canvas, faithful interpolation and knockout; Perspective Grid with Define Grid, presets, lock/snap/rulers, widgets, the 1–4 plane switch, movable planes, Perspective Selection scale/copy/perpendicular/Transform Again, and type and symbols truly projected with Edit Text. Left: Anti-Alias and Preserve Shape output, warp-envelope point editing, brush interpolation in blends, Free Transform/Scale/Reflect along a rotated box | 2–4 |
@@ -84,6 +84,7 @@ After placed documents (File › Place of a `.vectorcraft` file, linked), M4.14
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | M5: squared-distance texture redraws (#1257); clean-machine/platform drag measurements still pending; estimates unchanged |
 | 2026-10-12 | minor | M2: Curvature point display improved (#1236, in part); existing-path interpolation unchanged; estimates unchanged |
 | 2026-10-12 | minor | M7: full-name font matching and Missing Fonts searches (#1258); Windows font-service QA pending; estimates unchanged |
 | 2026-10-12 | minor | M1: repeated or rounding-only anchor Align preserves Undo, Redo and saved state (#1180 follow-up); estimate unchanged |

docs/target-app-parity.md

@@ -1,6 +1,6 @@
 # Parity with Adobe Illustrator
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Drawing: Curvature point display improved (#1236, in part); scores unchanged; Type core: full-name font matching (#1258), scores and hours unchanged; Selection: no-op anchor Align preserves history and saved state (#1180 follow-up); scores unchanged; UI chrome: Eyedropper cursor and precise-setting regressions (#1269); scores unchanged; Colour: Eyedropper reads visible locked and outside-isolation sources (#1251); scores and hours unchanged; Selection: segment click/Delete preserves neighboring edges (#1278); scores unchanged; Colour: unpainted zero-width strokes regain 1 pt when painted (#1253); scores and hours unchanged; graphs: designs and markers, data, Graph Type and label options; UI chrome: native macOS save Format menu, #866, scores unchanged; compound paths inherit the backmost appearance and member fill-rule edits reach their owner, #1197; scores unchanged; Type core: Middle Eastern digit types done, Character panel menu › Digits; PDF export warns when the pixel cap lowers raster-effect resolution; Drawing tools: Live Corners round corners between curved sides, #1144; Type advanced: proportional vertical metrics (`vpal`) done, #966; Shape Builder: #893 fixed, merged regions of crossing lines no longer keep seams; scores unchanged while #937 is open; #1034: document-point character controls after object/group scaling; full readiness recomputed as the standard's additive weighted sum, ~62%; per-audience hours; essentials-user score ~75% added; ready-for-real-work re-examined: 50% → 55%, mainstream 65% added; earlier the same day: full re-measure against Illustrator 2026 30.x; merged the ROADMAP's parity estimate, honest assessment and "Shipped so far" into this file) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Raster effects: squared-distance texture redraws (#1257); pixels unchanged; scores and hours unchanged; Drawing: Curvature point display improved (#1236, in part); scores unchanged; Type core: full-name font matching (#1258), scores and hours unchanged; Selection: no-op anchor Align preserves history and saved state (#1180 follow-up); scores unchanged; UI chrome: Eyedropper cursor and precise-setting regressions (#1269); scores unchanged; Colour: Eyedropper reads visible locked and outside-isolation sources (#1251); scores and hours unchanged; Selection: segment click/Delete preserves neighboring edges (#1278); scores unchanged; Colour: unpainted zero-width strokes regain 1 pt when painted (#1253); scores and hours unchanged; graphs: designs and markers, data, Graph Type and label options; UI chrome: native macOS save Format menu, #866, scores unchanged; compound paths inherit the backmost appearance and member fill-rule edits reach their owner, #1197; scores unchanged; Type core: Middle Eastern digit types done, Character panel menu › Digits; PDF export warns when the pixel cap lowers raster-effect resolution; Drawing tools: Live Corners round corners between curved sides, #1144; Type advanced: proportional vertical metrics (`vpal`) done, #966; Shape Builder: #893 fixed, merged regions of crossing lines no longer keep seams; scores unchanged while #937 is open; #1034: document-point character controls after object/group scaling; full readiness recomputed as the standard's additive weighted sum, ~62%; per-audience hours; essentials-user score ~75% added; ready-for-real-work re-examined: 50% → 55%, mainstream 65% added; earlier the same day: full re-measure against Illustrator 2026 30.x; merged the ROADMAP's parity estimate, honest assessment and "Shipped so far" into this file) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026)
 
 The authoritative parity assessment. [`ROADMAP.md`](../ROADMAP.md) summarizes it; [`gaps.md`](gaps.md) is
 the work list made from it. Deep areas have their own checklists: [UI and interaction](ui-parity.md),
@@ -78,7 +78,7 @@ dominate; 3D, graphs and automation are specialist). They sum to 105. Feature de
 | Strokes, brushes, width profiles | 5 | 88% | Art brush Overlap, Pattern brush auto corners, brush libraries, pen pressure on macOS, tilt/bearing/rotation | 8–15 | estimated |
 | Appearance, transparency, graphic styles, masks | 5 | 97% | raster effect reach in preview bounds | 1–2 | estimated |
 | Live vector effects | 5 | 85% | Outline Object, Effect › Rasterize, Pathfinder Hard Mix/Soft Mix/Trap, SVG Filters, the Transform effect's missing options (#885) | 6–10 | measured count 44/50, depth estimated |
-| Raster effects (Effect Gallery) | 4 | 48% | 29 Photoshop-style filters (Artistic, Sketch), the Effect Gallery dialog, Load Texture | 24–40 | measured count 28/57 |
+| Raster effects (Effect Gallery) | 4 | 48% | 29 Photoshop-style filters (Artistic, Sketch), the Effect Gallery dialog, Load Texture | 24–40 | measured count 28/57; texture redraw distances optimized (#1257), pixels verified |
 | 3D and Materials (and Turntable) | 4 | ~8% | initial live Revolve done (flat shading, one light, no caps, approximate visibility for intersecting surfaces); Extrude & Bevel, Inflate, Rotate, materials, Turntable views, 3D export | 50–85 | estimated (Revolve landed after the first measure, #846) |
 | Type core | 9 | 80% | hyphenation and justification options, Optical Margin Alignment, Middle Eastern features beyond bidi layout, optional group font-size preservation; transformed character controls fixed (#1034), see [type-parity.md](type-parity.md) | 14–19 | estimated; full-name font matches regression-tested (#1258) |
 | Type advanced (CJK, spelling, Touch Type, Retype) | 4 | 50% | CJK vertical composition (ruby, mojikumi), variable font axes, tab leaders, spell check, Touch Type, Retype | 20–28 | estimated |
@@ -479,12 +479,14 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
 - **Tests and robustness:** ~2,840 automated tests: model-based property tests, a junk-parameter sweep over every command, import fuzzing (SVG, PDF, libraries), golden renders, and MCP end-to-end tests over stdio. Shipped code never panics (workspace lints and a rollback safety net; see `docs/development.md`).
 - **Raster-effect resolution in PDF:** when the 64 million pixel cap on an effect image renders an object's raster effects below the document's raster effects resolution, PDF export warns once per object with the requested and the lowest achieved ppi (`crates/engine/src/tests_pdfraster.rs`).
 
-- **Full font names (#1258):** OpenType name ID 4 identifies its face alongside family/legacy/PostScript names, including localized names, for loaded fonts, cataloged files and Missing Fonts searches. Synthetic name-table regressions cover full names distinct from their PostScript name, real-family precedence and variable fonts' default faces. Windows font-service activation remains unverified; scores and hours are unchanged.
+- **Texture redraws (#1257):** Craquelure, Mosaic Tiles and Stained Glass compare squared distances when finding their nearest cells; rounding/tie boundaries use the original distance ordering. Brute-force candidate tests and three 1800×1500 viewport comparisons preserve the old pixels. A CMYK rectangle move at 190.07%/DPI 1.5 is reproducible with `cargo test -p vectorcraft-render texture_drag_perf -- --ignored --nocapture`; idle-machine Windows interaction is still unverified.
 
+- **Full font names (#1258):** OpenType name ID 4 identifies its face alongside family/legacy/PostScript names, including localized names, for loaded fonts, cataloged files and Missing Fonts searches. Synthetic name-table regressions cover full names distinct from their PostScript name, real-family precedence and variable fonts' default faces. Windows font-service activation remains unverified; scores and hours are unchanged.
 ## Revision history
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Raster effects: squared-distance texture redraws (#1257); pixels unchanged; scores and hours unchanged |
 | 2026-10-12 | minor | Drawing: Curvature uses circular point markers without direction handles or duplicate markers (#1236, in part); existing-path interpolation unchanged; score and hours unchanged (estimated) |
 | 2026-10-12 | minor | Type core: full-name font matches and Missing Fonts searches verified with synthetic fonts (#1258); Windows font-service QA pending; scores and hours unchanged |
 | 2026-10-12 | minor | Selection: repeated or rounding-only anchor Align preserves Undo, Redo, saved state and path geometry (#1180 follow-up); engine regression tests; score and hours unchanged (estimated) |

docs/ui-parity.md

@@ -1,6 +1,6 @@
 # UI and interaction parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Curvature point display improved (#1236, in part); scores unchanged; Direct Selection: no-op anchor Align preserves Undo, Redo and saved state (#1180 follow-up); Eyedropper cursor distinguished from precise crosshair (#1269); scores unchanged; Eyedropper can read visible locked and outside-isolation sources (#1251); scores unchanged; Direct Selection: independent segment picks and Delete (#1278); scores unchanged; Adding paint to an unpainted zero-width stroke restores the 1 pt default (#1253); scores unchanged; macOS save sheets offer a Format menu, #866; Attributes fill-rule controls edit the compound when a member is selected, #1197; a marquee needs to touch a path, not just lie inside its fill, #1103; earlier: Live Corners round corners between curved sides, #1144) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Texture-effect drag redraws optimized (#1257); idle Windows interaction still unverified; scores unchanged; Curvature point display improved (#1236, in part); scores unchanged; Direct Selection: no-op anchor Align preserves Undo, Redo and saved state (#1180 follow-up); Eyedropper cursor distinguished from precise crosshair (#1269); scores unchanged; Eyedropper can read visible locked and outside-isolation sources (#1251); scores unchanged; Direct Selection: independent segment picks and Delete (#1278); scores unchanged; Adding paint to an unpainted zero-width stroke restores the 1 pt default (#1253); scores unchanged; macOS save sheets offer a Format menu, #866; Attributes fill-rule controls edit the compound when a member is selected, #1197; a marquee needs to touch a path, not just lie inside its fill, #1103; earlier: Live Corners round corners between curved sides, #1144) · **Target:** Adobe Illustrator 2026 (30.x)
 
 How VectorCraft's tools, handles, snapping and panels behave next to Illustrator's. A vector illustrator's
 trust is in the details: where a handle lands, what Shift and Alt do mid-drag, what a smart guide snaps to,
@@ -102,6 +102,7 @@ tools, never checked side by side) isn't captured row by row.
 
 | Behaviour | Status | Notes |
 |---|---|---|
+| Moving a rounded rectangle with Craquelure at high DPI | partial | Distance searches optimized; moved-viewport pixels unchanged for three texture effects; `texture_drag_perf` probe available. Idle Windows mouse-drag QA remains (#1257) |
 | Bounding-box handles: Shift proportional, Alt from centre, rotate outside the corners | done | |
 | Rotated objects keep a rotated bounding box and their angle; Reset Bounding Box | done | |
 | Free Transform, Scale and Reflect along a rotated box | missing | |
@@ -177,6 +178,7 @@ re-measure of the panels added since.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Texture-effect drag redraws optimized (#1257); idle Windows interaction still unverified; scores unchanged |
 | 2026-10-12 | minor | Curvature: circular point markers, no direction handles or duplicate points; existing-path interpolation and #975 remain separate (#1236, in part); scores unchanged (estimated) |
 | 2026-10-12 | minor | Direct Selection: repeating anchor Align and rounding-only Align leave Undo, Redo and saved state intact (#1180 follow-up); scores unchanged (estimated) |
 | 2026-10-12 | minor | Eyedropper: original pipette at the sampling tip; precise setting and DPI checked (#1269); OS visual QA and Caps Lock unverified; scores unchanged |