The browser accepted and persisted library.preferences cacheMb, but stored thumbnails stayed over that limit: the worker index pruned with the native default (DISK_CACHE_BYTES), so the setting only reached the desktop cache. The worker group now carries the session cache_bytes(), the app refreshes it every frame, and the next stored thumbnail prunes to it.
The main thread's Workers tracked no rendered-thumbnail cache until the
first render request carried one. If Clear Preview Cache ran before that
(e.g. starting on an empty filtered view), the per-frame observation in
finished() had nothing to compare with, and the first request only
recorded the already-cleared generation as its baseline. The persisted
ThumbIndex was never invalidated, so once the filter was removed the
request touched the old entry and the worker read the pre-clear JPEG
back from browser storage. Replacing the cache (another library) before
the first request had the same gap.
Workers::start now takes the session's cache and records it, with its
current generation, as the baseline the persisted index belongs to. A
normal start with no clear observes the same cache and generation and
keeps the index. The comparison moves into wire::CacheWatch so it is
tested natively (cargo test --workspace) next to ThumbIndex.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Skip unchanged thumbnail jobs and reuse bounded settings hashes (both maps
capped at 1024 entries). Reject stale render results and cache writes after
edits, library changes and preview clears: render requests carry a request
id and cache generation, PreviewCache writes and reads hold the generation
lock that clear() takes, and library.clearPreviews also drops cached
sources. The web worker index follows the same generation rule.
The decoder guards, Windows path fixes and test fixture changes that were
bundled in a327b98 are separate commits; the benchmark follows this one.
Co-authored-by: Codex <noreply@openai.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
RenderRequest gains a sample format (OutputDepth: U8 for previews, U16, F32Linear); deep renders
run the per-pixel stage with the exact sRGB curve and return Rendered::deep alongside the 8-bit
image (GPU stays 8-bit: deep exports render on the CPU). Export encodes deep renders: 16-bit PNG and
TIFF, 32-bit float linear TIFF with a linear ICC profile we generate, 10-bit AVIF (YCbCr planes into
ravif). Output sharpening and watermarks work on deep images. ExportOptions.bitDepth with per-format
defaults (TIFF 16-bit, others 8-bit), export dialog bit depth choice (remembered with the last
export), MCP export schema. Tests: a smooth gradient has 1024 levels in a 16-bit TIFF vs 13 in
8-bit, float TIFF decodes to the same light as 16-bit, per-format depth rules, AVIF 10-bit.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Renders run in dedicated module Web Workers, each a second instance of the app's wasm module
(index.html compiles it once and posts the WebAssembly.Module to worker.js). A job crosses as
JSON (WireJob: source, settings, request); the worker reads originals and cached thumbnails from
browser storage itself, keeps decoded sources and per-view stage caches, and transfers RGBA back.
Jobs follow the worker that decoded the photo; the loupe waits for it. No wasm threads or
SharedArrayBuffer needed; falls back to inline rendering if no worker starts (?workers=0).
Thumbnail disk cache on the web: thumbs/<key>.jpg in OPFS/IndexedDB with an index on the main
thread, pruned to the desktop budget (2 GB → 80 %, LRU).
ui-egui: RenderOffload hook in the Renderer (queue/priorities/dedup stay in the UI).
engine: RenderJob.origin + MediaCache::origin_ref; preview: encode_jpeg/decode_jpeg public.
xtask web: copies worker.js; --serve sends COOP/COEP/CORP (documented in docs/web.md).
Headless Chrome, cold load + grid scroll, 24 demo photos: main-thread busy 12.4 s → 0.7–1.1 s,
long tasks 23 (max 1.1 s) → 0; grid filled in 6.3–8.4 s vs 13–16 s; slider job 4 ms.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Mohammed Munzir