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Brandon ThomasandClaude Opus 5.5
2218ca5a4c
A GPU render no longer hands back an image it cannot vouch for: - set the wgpu device-lost callback (wgpu never reports a lost device as an error, so a driver reset went unnoticed); readback waits with a timeout and checks the poll result and map callback instead of blocking forever - each render runs in OutOfMemory/Validation/Internal error scopes; errors fail that render (OOM and limit failures for that render only, device errors for the process) and it is redone on the CPU - every buffer is checked against the device limit when created (no validation error, no process-wide disable); LIGHTCRAFT_GPU_LIMITS=webgpu|<MiB> creates the device with lower limits to reproduce small adapters - the output buffer is cleared and the per-pixel kernel writes alpha 255: any unwritten pixel (work silently dropped, the issue's all-black export) fails the render; an all-black result is re-rendered on the CPU - renders submit per stage and every 16 M invocations, the per-pixel stage runs in ~4 MP bands: no long submission for a slow iGPU's watchdog to reset - ui.inspect perf.gpuReason / perf.gpuFallback, app.gpu reason/lastFallback, System Info and Settings say why the GPU is off (e.g. llvmpipe skipped) and why the last render fell back Tests: crates/gpu/tests/fallback.rs (limit, mid-render limit, validation error, dropped work, black photo), engine export falls back to the CPU image, banded 3000x2000 GPU/CPU equivalence. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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What's new in LightCraft
October 2026
Presets and profiles
- Import presets from other editors: XMP presets, classic
.lrtemplatefiles, "DNG presets" from mobile apps and.zipbundles of any of these — whole folders at once, grouped by pack. Masks inside presets come along. - Luminar looks:
.lmpfiles and.mplumpackcollections import as presets (grouped by collection); the sliders with a counterpart here come along, the rest is listed. - 23 new built-in presets: Portrait, Landscape, Urban, Food, Seasons, Vintage and B&W toners.
Reliability
- Exports are never black because of the GPU (issue #78): a GPU render that runs out of device
memory, exceeds the GPU's buffer limits, hits a driver error or reset, or comes back
incomplete is redone on the CPU — the file is the same image either way. Work is sent to the GPU
in short pieces so slow integrated GPUs aren't reset by their watchdog.
ui.inspect→perf(gpuReason,gpuFallback), Help ▸ System Info and Settings ▸ Performance say why the GPU isn't used (e.g. a skipped software adapter such as llvmpipe) and why the last render fell back.
Library
- Smart albums with a rule editor: match all / any / none, nested groups, 26 fields.
- Quick Collection and target album (B in the grid), keyword sets (⌥1–⌥9), colour-label sets.
- Colour-label filter with several labels at once; expandable folder tree in Local.
- Import: copy to any folder, by day / by month / one folder, rename on import, metadata preset, Copy as DNG.
- Import ▸ Move: photos go into the destination (with the same folders and renaming as Copy, e.g.
Photos/2026/20260114/20260114_001.jpg) together with their XMP sidecars; each original leaves the card only after its copy is verified and in the library. Duplicates and files that fail stay where they were. - Watched-folder auto import; Convert to DNG; Duplicate; Build Standard / 1:1 / Smart Previews.
- Export file names use the Rename Photos tokens ({title}, {seq:2}, {date:%Y-%m-%d}…), plus new {num}, {folder}, {lens}, {iso}, {rating}, {creator}.
- Copyright status, rights usage terms and copyright info URL in Info, metadata presets and exports.
- Auto-Tag from Tracklog: GPS locations for your photos from a GPX track log, matched by capture time.
- A change that can't be saved to disk (full or unplugged drive) is no longer silent: the command reports "saved in memory but not written to disk", the top bar shows a warning, and LightCraft keeps retrying until the save goes through.
- Smaller, faster catalogs: photos you only looked at in Local (never added, rated or edited) are forgotten once their folder has not been browsed for 30 days — your files and sidecars stay, and browsing the folder shows them again. Change the period (or turn it off) in Settings → Performance.
Editing
- Auto Sync: edits apply to every selected photo. Auto B&W mix. Automatic versions.
- Colour-range masks: click the photo to sample. Luminance ranges: range bar, smoothness, luminance map.
- ⌘-drag to straighten, ⇧G Guided Upright, a grid while transforming.
Viewing and sharing
- Slideshow, second window, All Metadata, System Info.
- Edit in External Editor (⇧⌘E): a 16-bit TIFF copy, stacked, refreshed when you come back.
- Lossy DNG files and Smart Previews open as raw photos.