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Conflicts: - README.md: one WGPU_VALIDATION_INDIRECT_CALL row (this branch's wording). - apps/designcraft/src/gpu.rs: main's only change is a test tweak in the backend-fallback tests, which now live in gpu/backend.rs; kept this branch's file and ported the tweak there (the check depends on the chosen backend, not the candidate count). - apps/designcraft/src/main.rs: dropped main's inline VALIDATION_INDIRECT_CALL block (#664) in favour of gpu::instance_flags(); kept the adapter selection, restart and first-frame watch, and took main's macOS Dock Quit handling, preserve_documents_on_exit in on_exit, and profile::config_dir/recovery_dir. - crates/engine/src/recovery.rs: took main's version; its retained recovered checkpoints do what this branch's recovery change did. - ROADMAP.md: main's file plus this PR's one progress-log line.
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Hardware and platform parity
Last reviewed: 2026-10-10 · Last updated: 2026-10-12 · Change: minor (font managers on macOS; shared print spooler; Windows CI passes; Windows mixed-DPI drag and windows wider than 8192 px don't crash) · Target: Adobe InDesign 2026 (21.6)
What InDesign does with hardware, per platform, against DesignCraft. Layout is not a GPU-hungry workload, so this dimension carries little weight, but a start that fails on a graphics driver loses the user entirely. Overall numbers: target-app-parity.md.
Hardware: ~45% ready, 20–40 h. Platforms: ~55% ready, 40–80 h. (estimated)
Hardware features
| Feature | InDesign 2026 | DesignCraft macOS | Windows | Linux | Web |
|---|---|---|---|---|---|
| GPU display (canvas) | GPU Performance: GPU preview, animated zoom (Metal on macOS; Windows with supported GPUs) | canvas rasterized on the CPU (vello_cpu, SIMD, multithreaded), presented by wgpu (Metal) | wgpu DirectX 12 (since #297), Vulkan/OpenGL fallback | Vulkan, OpenGL fallback | WebGPU, WebGL2 fallback |
| Start-up on any GPU | robust | Metal device lost on Intel Macs (#334) | AMD OpenGL crash (#167), launch failures (#273) | some reports (#192, #220) | |
| Backend fallback | n/a | gpu.json skips a backend whose start never showed a frame (#297) |
same | same | |
| Adapter choice and restart | n/a | power saving; a GPU that fails or hangs at start-up is left out and the app starts again on the other one; indirect-call check off (#334) | the GPU that drives the primary display (EnumDisplayDevices); DirectX 12 adapters, then OpenGL, then Vulkan |
the GPU that drives the panel or a monitor (sysfs), then the system's order | |
| Animated / scrubby zoom | ✓ (GPU) | ✓ (CPU tiles, damage regions) | ✓ | ✓ | ✓ |
| HiDPI / Retina | ✓ | ✓ | ✓ (drags across monitors with different scales keep the window's size: winit pinned to the rust-windowing/winit#4694 backport) | ✓ | ✓ |
| UI scaling | ✓ | ✓ (menus and dialogs usable at larger scales, #281) | ✓ | ✓ | ✓ |
| Multi-monitor, floating document windows | ✓ | ~ one window; New Window for the same document; the window may span monitors up to the GPU's largest texture (16384 px on DirectX 12, Vulkan and Metal hardware), and beyond it draws wrongly instead of closing | ~ | ~ | ✗ |
| Printing | system print with PPDs, PostScript, separations | PDF to CUPS (craft-print) |
Windows PDF raster spooler (craft-print) |
PDF to CUPS (craft-print) |
browser download |
| Colour-managed display (monitor profile) | ✓ | ✗ (working CMYK profile simulated; monitor profile not applied) | ✗ | ✗ | ✗ |
| Touch / pen | Touch workspace (Windows), gestures | trackpad pinch/scroll | ~ | ~ | ~ |
| Multi-core composition | single-threaded composer per story (documented by Adobe as mostly single-threaded) | parallel story composition (rayon), 6.7× on the sample | ✓ | ✓ | single-threaded |
Platforms
| Platform | InDesign 2026 | DesignCraft | Evidence |
|---|---|---|---|
| macOS (Apple silicon, Intel) | ✓ | ✓ primary development platform | Intel GPU start failure (#334); window controls misaligned (#333) |
| Windows x64 | ✓ | ~ builds and installers ship | copy/paste and context menus (#351, #312), installer confusion (#64), launch failures (#273, #167) |
| Windows ARM64 | ✓ | ~ build (CI workflow) | not exercised at runtime |
| Linux (x86_64, aarch64; riscv64 tar.gz) | ✗ | ~ deb, AppImage, Flatpak | clipboard (#164), panels don't scroll (#267), CJK UI font (#332) |
| FreeBSD | ✗ | ~ build | |
| Web (WASM) | ✗ (InDesign on the web is not shipped) | ~ same UI, file picker, downloads; no control channel |
DesignCraft runs on more platforms than InDesign; what's missing is runtime testing on the ones the developers don't use daily.
Remaining effort
| Work | Opus 5.5 h |
|---|---|
| Start-up robustness on every GPU: confirm #297 with reporters, Intel Metal fix, CPU-only present fallback | 15–30 |
| Printing fidelity, PostScript and print presets | 15–30 (counted in file-format-parity.md) |
| Monitor profile in display colour management | 5–10 |
| Windows and Linux runtime smoke tests in CI | 20–40 |
| Multi-window document views | 15–30 |
| Hardware + platforms | 60–120 |
Revision history
| Date | Change | Summary |
|---|---|---|
| 2026-10-12 | trivial | Windows: dragging across monitors with different display scales doesn't grow the window and crash (winit pinned to the rust-windowing/winit#4694 backport); a window wider or taller than 8192 px keeps its surface, and a wgpu error logs instead of closing the app |
| 2026-10-10 | major | Created from the code, InDesign 2026's GPU Performance features and the issue tracker |
Windows submission now uses shared craft-print. It selects matching or default driver paper, shrinks oversized sheets to the printable area without enlarging smaller ones, and preserves the queue's duplex default; printer-driver options UI and physical output validation remain open.