dtourolleandClaude Opus 5
7407a82aa7
The fused pass hands a fragment a colour and no coordinate. That is what buys one dispatch for a whole edit, and it is also a wall: sharpening, noise reduction, clarity, texture, dehaze and spot removal are each defined by what the neighbours are doing, and FR-DEV-3 and FR-DEV-8 ask for all six. None of them could be written at any price. So there is now a detail stage. An operation implements `Operation` for its parameters exactly as before — the panel, the sidecar, the history and the presets all work unchanged — and additionally returns `Affects::Detail` and a `DetailStage` yielding one pass per dispatch. `Affects` grows the third variant `docs/requirements.md:250` designed and nothing had cut. Where the stage sits is a colour-science decision, not an arrangement of convenience. It runs after every point operation and every mask layer, so an amount chosen against a tone curve survives the curve moving; in linear sRGB after the camera matrix, because camera RGB has no luminance to sharpen against; and before the output transform and the clip, because FR-DEV-2 allows one quantisation and a highlight clipped before a convolution grows a dark ring. The fused pass therefore ends one of two ways, and when a detail stage follows it hands on unclipped f16 and the last detail pass encodes. At render resolution rather than on the source, which is the whole of FR-DSP-1: a pass before the framing prologue would cost 24 MP to draw a 2 MP preview. `RenderScale` is what makes that survivable — a radius is stored as a fraction of the frame's shorter edge, exactly as a mask feather already is, or as a count of source pixels, and converted per render. It also reports when a radius is smaller than a proxy pixel rather than drawing a plausible lie; zooming to 1:1 makes the preview exact with no second path. `Invalidation` gives FR-DEV-3d something to mean. Moving a detail parameter leaves the colour key alone, so `AdjustPass` keeps the linear intermediate and skips the fused dispatch: dragging a sharpening slider costs a convolution. Moving exposure does re-run the detail passes, because they read what the colour pass wrote, and there is no arrangement of keys that avoids it while keeping sharpening after tone. Validated by a separable box blur that is not a develop operation, behind the `detail-probe` feature and absent from a shipping build. An abstraction with no consumer is a guess; a box blur's answer is known in closed form, so the tests assert every byte of the ramp rather than that the edge got softer. 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 |
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.