bflatastic
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Progress log, evidence, checklist rows and revision history for the changes merged late on 2026-10-12 that the progress docs didn't have.
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Hardware parity
Last reviewed: 2026-10-10 · Last updated: 2026-10-13 · Change: minor (a window surface larger than 8192 px keeps working, #1459 in part; Linux Display Server preference opens the window through XWayland, #1151) · Target: Adobe Illustrator 2026 (30.x)
What hardware Illustrator uses, per platform, against VectorCraft. Illustrator's side is from its public
documentation (GPU Performance, touch workspace, pen pressure pages); ours from the code
(crates/ui-egui/src/canvas.rs, touch.rs, graphics.rs, crates/render). Part of
target-app-parity.md.
Summary
~35% (estimated), 25–45 h. VectorCraft rasterizes the canvas on the CPU (multithreaded vello_cpu) and uses
the GPU only to composite, so any GPU that can show a window works, at the cost of GPU-accelerated preview
on huge documents. Pen input is pressure-only and Windows-first.
| Feature | Illustrator | VectorCraft macOS | Windows | Linux | Web | Status / hours |
|---|---|---|---|---|---|---|
| GPU-accelerated canvas (GPU Performance, GPU Preview, GPU anti-aliasing) | Metal, DirectX | CPU raster, GPU composite (wgpu/Metal) | CPU raster, GPU composite (DX12, OpenGL fallback) | CPU raster, GPU composite (Vulkan/GL) | WebGPU, WebGL2 fallback | partial; a GPU renderer spike is pending (M5): 15–25 h |
| Multithreaded rendering off the UI thread | partial | yes | yes | yes | single-threaded | beyond Illustrator |
| Hybrid-graphics GPU choice | automatic | power-saving GPU by default, Preferences › Graphics Processor | same; DX12 then OpenGL; no Vulkan unless asked (#545, #806) | the desktop's GPU | browser | done |
| Restart on another GPU when the first fails to present | — | yes (#502, #964) | yes | yes | restart on lost device (#369) | done |
| Pen pressure | yes (Wacom, Windows Ink, macOS tablet events) | no (winit reports none, #852) | yes (pointer force via WM_POINTER) |
X11 only via XWayland (Preferences › Performance › Linux Display Server, #1151); none on Wayland (#491, #764) | browser pointer events | partial: 4–8 h for macOS and Wayland (winit 0.31) |
| Pen tilt, bearing, barrel rotation (6D Art Pen) | yes, drives brushes | no | no | no | no | missing: 4–8 h after the input layer (#372) |
| Pen eraser end | yes | no | no | no | no | missing |
| Touch gestures (pinch zoom, two-finger pan, rotate view, Touch workspace) | yes (Windows touch, Surface) | trackpad pinch and scroll | pinch, pan; two-finger tap undo, three-finger redo (#585) | same where winit reports touch | same | partial: touch workspace and rotate gesture missing, 3–5 h |
| Trackpad (smooth scroll, pinch) | yes | yes | precision touchpads | yes | yes | done |
| HiDPI / Retina, per-monitor scale | yes | yes | yes | yes | yes | done; a window dragged between monitors of different scale can still grow on Windows (#1459, open) |
| Multiple monitors: panels and document windows on another screen | yes | no (one OS window) | no | no | — | missing: 6–10 h (with multiple windows, gap G7) |
| Display colour profile (proof and display through the monitor's ICC) | yes | no | no | no | — | missing: 3–5 h |
| 3D GPU rendering (Materials, ray tracing) | yes | — | — | — | — | blocked on 3D (gap G3) |
Revision history
| Date | Change | Summary |
|---|---|---|
| 2026-10-13 | minor | A window whose surface is larger than 8192 px (stretched over several monitors, or grown by a drag between monitors of different scale) is configured up to the graphics adapter's limit instead of closing the app (#1495, part of #1459); the window growing during that drag on Windows is still open; not reproduced on a mixed-scale setup |
| 2026-10-11 | minor | Preferences › Performance › Linux Display Server › X11 (XWayland) opens the window through XWayland on a Wayland session, where pens and dropped files reach the app (#1151); score unchanged (estimated) |
| 2026-10-10 | major | First checklist from the canvas, touch and graphics code and the open hardware issues |