5a8327824fcfd9a8a1b145e41ba4db6a1672edf1
FR-DEV-6 asks for three things — named presets, copy/paste between images, and batch-apply to a selection. The last two have been here for a while; this is the first. The format is the sidecar's, deliberately. A preset *is* the non-default half of a version, so the lines are the same lines keyed the same way, which makes the two files diffable against each other and lets someone debugging an edit paste a block from one into the other. One file rather than one per preset: a preset per file makes the name a path, and every name then has to survive a filesystem — a `/` becomes a directory, a name differing only in case collides on one platform and not another, and renaming becomes two operations that can half-fail. As a key in a document it is none of those. Unknown *parameters* needed no machinery. `Preset` already holds whatever keys it is given and resolves them against the descriptors only at apply time, so one written by a newer build survives by being stored. Only lines that are not `op.param = float` at all are preserved verbatim, which is the sidecar's version-skew promise made here too. Applying is the paste path with a different source, so a preset reaches a selection through the sidecar read-modify-write that was already there: no graph, no decode, no GPU, forty files or one. Two smaller decisions worth the record. A library that fails to parse is held empty in memory and *not* written back over — settings regenerate themselves and this is work, so a parse failure must not be the moment it is destroyed. And every save persists immediately and rolls the in-memory copy back if the write fails, so the sheet never lists a preset the file does not have. The grid's "Presets" button is gated on the selection alone, unlike the "Paste to 40" beside it. That button needs a clipboard armed this session; the preset list is whatever was saved last month, and hiding it behind an unrelated action is what makes a feature only its author knows about. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
DarkRoom
A cross-platform, non-destructive RAW photo editor for Linux and Android.
Status: early. v0.1 is a remote library viewer — see docs/milestone-v0.1.md.
Documentation
| Document | Contents |
|---|---|
| requirements.md | What the software must do — 122 numbered requirements |
| architecture.md | How it is built — crates, GPU pipeline, data model, sync |
| milestone-v0.1.md | The first buildable milestone |
| faces.md | Face detection and identity — the models, the licence problem, and what S14 measures |
Building
Desktop:
cargo run -p darkroom-desktop
Android (containerised toolchain, see docker/android):
./docker/android/build.sh cargo ndk -t arm64-v8a build --release
Current state
Working: workspace, GPU context and compute pass, adaptive Slint shell, Android cross-compilation of the core crates.
Not yet working: the zero-copy display path. The build currently uploads frames through the CPU, which is exactly what ARCH §6.1 forbids — measured at 96% of frame time at 4K. Replacing it is spike S1, the project's highest priority.
cargo run -p dr-gpu --example bench --features readback
reproduces that measurement.
Licence
GPL-3.0-or-later.
Releases
20
DarkRoom 0.24.0
Latest
Languages
Rust
86.1%
Slint
10.3%
Python
1.1%
Shell
1%
WGSL
0.9%
Other
0.6%