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Since Windows defaults to DirectX 12 only (#50), PCs whose graphics chip has no DirectX 12 driver (Intel 4th generation on Windows 11) fall back to WARP, Microsoft's software renderer, and the app lags. Before eframe creates its instance, WordCraft now probes DirectX 12 with a short-lived instance: a hardware adapter that meets eframe's device limits keeps DirectX 12 only; WARP only enables OpenGL next to DirectX 12 (GPU preferred, WARP as last resort); no adapter, or only GPUs below the limits, uses OpenGL alone. WGPU_BACKEND still overrides everything. The choice is logged, and the decision is a pure function with unit tests. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>
30 lines
2.4 KiB
Markdown
30 lines
2.4 KiB
Markdown
# Hardware parity with Microsoft Word
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> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** major (first version) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4 and Word for Windows
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Word is not a hardware-heavy app, but a few devices matter to its users: printers above all, then
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pens, microphones (Dictate) and speakers (Read Aloud), and displays.
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**Dimension: ~40% (estimated), 20–40 h to full** (pen/ink hours are counted with the Draw tab in
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[`target-app-parity.md`](target-app-parity.md)).
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| Hardware | Word | WordCraft macOS | Windows | Linux / BSD | Web | Parity | Hours |
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|---|---|---|---|---|---|---|---|
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| Printers: native print dialog, printer choice, copies, duplex, page ranges, tray, scaling | ✅ (`WordPDE.plugin` print-dialog extension on Mac) | 🟡 PDF opens in Preview to print (#286) | 🟡 PDF opens in the default viewer (#286) | 🟡 PDF opens in the default viewer (#286) | ✅ browser print dialog (#209) | 35% | 5–8 |
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| GPU rendering, HiDPI/Retina, pixel-aligned text | ✅ | ✅ wgpu + vello_cpu rasteriser, whole-pixel text (#110, #165) | ✅ DirectX 12 default (#50), OpenGL when DirectX 12 has no GPU driver (#316); startup crash on Intel UHD (#170) | ✅ (soft text on KDE at some zooms, #140) | ✅ | 80% | 3–5 (bugs) |
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| Multiple monitors, per-monitor DPI, remembered window position | ✅ | ✅ (#38, #76) | ✅ (winit DPI fix pending, #155) | ✅ | — | 85% | 1 |
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| Pen / stylus: ink, pressure, eraser, ink to shape/math | ✅ (Draw tab, `InkRender.bundle`) | ❌ | ❌ | ❌ | ❌ | 0% | (Draw tab, 15–25) |
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| Microphone: Dictate | ✅ (cloud speech service) | ❌ | ❌ | ❌ | ❌ | 0% | 8–15 + owner (speech model choice) |
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| Speakers: Read Aloud | ✅ | ✅ system speech, speed, sentence skip (#190) | ✅ | 🟡 | 🟡 | 75% | 1–2 |
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| Touch screens and touchpads: pinch zoom, inertial scroll | ✅ | ✅ pinch (#179) | ✅ | ✅ inertial scroll (#252) | ✅ | 85% | 0–1 |
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| Scanners/cameras (Insert from device / Continuity Camera on Mac) | ✅ | ❌ | ❌ | ❌ | ❌ | 0% | 2–4 |
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## Revision history
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| Date | Change | Summary |
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|---|---|---|
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| 2026-10-10 | trivial | Windows falls back to OpenGL when DirectX 12 offers only the software adapter (#316) |
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| 2026-10-10 | trivial | Desktop File › Print opens the PDF in the system viewer (#286) |
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| 2026-10-10 | trivial | Inertial touchpad scrolling landed (#252) |
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| 2026-10-10 | major | First version |
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