dtourolleandClaude Opus 5
480c46c41a
The before/after published a p99 ratio of 6.0x at 4K. It is not supported and the correction is worth more than the number was. The baseline run's `fit` rows spread 2.3x between median and 99th percentile while every row of the after run spreads about 1.1x. A stage costing `radius x pixels` has no reason to be bimodal, and `fit` is the memory-bound configuration — it walks the whole 482 MB source on a stride where `1:1` reads a contiguous window. Something else had the machine. The merge brings in the cross-check that settles it: "Try every GPU, not only the fastest one" measured the same baseline code on the same card and reports 4.67 ms p99 for M3 clarity fit at 2560x1600, against 10.40 ms here. Two measurements of one thing differing by 2.2x mean the noisier one is wrong. So both percentiles are now published and the p50 column is the claim: 2.8x at 4K rather than 6.0x. The p99 improvement is real and larger; this run cannot say by how much, and says so. What the caveat does not touch: every after figure is inside the 16 ms budget with a p99 within 26% of its median at every size and both views, and clarity against all-four is a within-run comparison. Co-Authored-By: Claude Opus 5 (1M context) <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.