HEAL painted a grey blob over the photo it was meant to repair, and the cause was one draw Skia gets wrong on this build: a snapshot used as a SCALED source comes back with the alpha multiplied into its rgb a second time, so a partly transparent rim — which is what the mask's feather is — was read as a dark wash. A pyramid of halvings is built of exactly those scaled draws, which is why the repair's own rim came out grey; the same source read at 1:1 is exact (measured, tmp-src-probe). So the fill is now a cascade of blurs, all of them 1:1: the cut frame is blurred at a few widths, widest first, each finer one drawn over it, the untouched cut on top. The finest is one brush wide, each next is twice the last, and the count follows the depth of the hole (the stroke's own diagonal against the widest brush), which is what keeps the middle of a long hole filled rather than bare. Nothing is copied from anywhere and the rim arrives with no seam, which is what the passes were always for. And the fill is built on the brush's own box rather than the frame, padded by three sigma of the widest level. The composite reads it only where the mask is, so this changes no pixel of the result (heal-check measures the same masks either way) and it is what makes the repair affordable at the zoom a repair is aimed at: at a 3200px preview a single spot went from 1.7s of frozen main thread to 1.2s, and the heal's own share of that from 0.8s to 0.3s. What is left is the pipeline itself, which is a separate matter. The FIX brush outlived its tab. It takes the pointer on the photo, and leaving TOOLS never put it down — so its layer stayed on the stage over a photo nobody was editing, and its ring came back under the pointer every time the hand crossed a repair, which reads as the tool re-arming itself. It now goes down with the tab, with another chip or another strip, and on a press outside its own two chips, the same way the mask tool does. And the Immich button was missing for a visitor who had just connected a server: the studio and the library are two screens of one page, both mounted, so coming back is a route change and not a mount — the studio's own effect, which reads the server list once a session, never ran again. It is read again on a popstate that lands on /app. Checks: node scripts/heal-check.mjs (the cascade and the box, to the letter), npx tsc --noEmit, and the studio driven in a browser: the button appears on the way back from the library, the brush goes down with TOOLS and re-arms with HEAL, and a stroke over a photo lays one band with no grey in it.
RecipesCam
RecipesCam is a camera and photo-editing app built around recipes — reusable
looks that carry a film simulation plus a full set of adjustments. You shoot or
open a photo, dial in a look, and keep it as a recipe you can apply again, share
as a .recipe file, or save to your account.
It ships twice from one repository: a React Native (Expo) app for iOS and
Android, and a self-contained web build under docker/ that runs the same
render pipeline in the browser.
What it does
- Shoot with a recipe applied. Live viewfinder, GPS-tagged captures, and the recipe baked into the saved file.
- Film simulations. Built-in looks — PROVIPES, VELVIPES, CLASSIC CHRIPES, CLASSIC NEGIPES, ASTIPES, ETERNIPES, ACRIPES, B&W HIGH CONTRAST and the LC STREETLIFE pair — each with its own grain and tone curve.
- The full adjustment set. Exposure, contrast, highlights and shadows, saturation, colour temperature, clarity, grain, and an HSL mixer with a colour picker that samples straight off the photo.
- Geometry. Crop to a fixed ratio or free-form, quarter turns, and a straighten ruler, plus printed frames (classic border, retro instant, wall frame portrait/landscape).
- Finishing. Watermark and GPS stamp, EXIF carried through the export, JPEG written with a proper 300 DPI JFIF header.
- On-device upscaling. A Real-ESRGAN pass runs locally when an export asks for more pixels than the source has — no server sees the photo.
- Recipes. Save, favourite, export and import
.recipefiles; the web build keeps them in your account, the phone build also keeps them on device.
The two builds
| Build | Where | Stack |
|---|---|---|
| iOS / Android | repo root | Expo + React Native, @shopify/react-native-skia for the render pipeline, NativeWind for styling |
| Web | docker/ |
Vite + React, CanvasKit (canvaskit-wasm) for the same pipeline, Fastify + SQLite API for accounts and recipes |
The render engine is shared by design: the web build compiles the app's own
src/utils/* and type definitions unchanged, with @shopify/react-native-skia
aliased to a CanvasKit shim (docker/frontend/src/engine/skiaShim.ts). A look
looks the same on both because it is the same code.
Running the web build
cd docker
cp .env.example .env
docker compose up -d --build
# → http://localhost:8090
Photos never leave the browser: grading, framing, watermarking and JPEG
encoding all run in the visitor's tab; the API only stores accounts and recipe
JSON. See docker/README.md for the layout and the proxy setup.
Running the app
npm install
npx expo start # Expo Go / dev client
npx expo run:android # or run:ios for a native build
Repository layout
App.tsx, src/ the Expo app: screens, tool rail, viewfinder, shaders
docker/ the web build (frontend + API + compose file)
frontend/shared/ vendored copies of the app's types and utils
frontend/src/engine/ CanvasKit shim, export engine, super-resolution
docs/ privacy policy
THIRD_PARTY_NOTICES.md licences of the bundled fonts, models and libraries
Licence
See LICENSE and THIRD_PARTY_NOTICES.md.