The studio took JPEG, PNG and HEIC and nothing else, so a photographer's own negatives never reached it. A RAW now loads the way any other file does — `isRawName` reads the extension off a 24-entry list, the file goes into OPFS under one slot (`current_image.raw`, beside `current_image.name`, so a reload finds it again) and `rawDevelop` runs it through LibRaw-wasm: half size, 16-bit output, camera white balance and the camera's own 3x3 matrix, in bands of 2M pixels so a 30MB file never holds a second copy of itself. `example-sony.ARW` (30.3MB) lands as a 3120x2084 picture, no page error. DEHAZE joins the FX tab, where Lightroom keeps it: a chip off the same PARAM_DEFS entry (`dehaze`, 0..10) so nothing new renders chips, and the pass is the dark channel prior — `atmosphericLight` reads A off a 32x32 draw of the photo, `DEHAZE_SKSL` takes omega up to 0.95 over a floor of 0.1 — measured at 71.8% of the stage's pixels moved between 0 and 10. The gradient mask grows the six knobs the phone's has: HIGHLIGHT, SHADOW, WHITE, BLACK, CLARITY and DEHAZE. The mask's falloff is a smoothstep rather than a line, and CLARITY/DEHAZE inside a mask get a blurred copy of the photo plus the air A as a second child of the mask shader — so a mask's clarity is clarity and not a flat brightness lift. The column shows all nine rulers; CLARITY 9 moves 42.2% of the stage, DEHAZE 9 moves 27.9%. CLARITY stops reading the whole photo per pixel: the single pass that sampled a 15x15 box 225 times is now the three passes the same math wants — 1x15, then 15x1, then a blend, `orig + (orig - B) * 3.2` — about 30 reads. Both signs work (77.4% of the stage moves at +10, 79.6% at -10), and the negative branch keeps its mist as it was. The pointer reviews a look before it is taken: resting on a PHOTO STYLE chip or a recipe chip lays that look on the photo while it stays there and gives it back the moment it leaves — byte-identical, measured on four of them (24.9%, 23.8%, 24.5%, 25.3% of the stage moves on, 0.00% off) — while the recipe, the UNDO stack and the session stay on the look the click left. A hovered look brings its colour alone: the masks, the dust spots and the mosaic of the photo being edited ride along, or a pointer crossing a chip row would rub them off. A PRO sim is left out, since a hover that showed its look would hand over what the click gates. Probes: e2e-raw-verify, e2e-dehaze-mask, e2e-mask-verify, e2e-clarity-verify, e2e-hover-preview2.
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.