Brandon ThomasandClaude Opus 5.5 c7a1e3e2f6 M5.2a: lightcraft-gpu crate (wgpu compute) with the per-pixel stage on the GPU ...

New L3 crate `lightcraft-gpu`: a wgpu device (Metal/Vulkan/DX12; none on wasm32),
WGSL kernels compiled once, buffer/dispatch/readback helpers, and a renderer that
runs the per-pixel stage (tone map, highlights/shadows, clarity/texture/sharpen,
dehaze, local mask terms, OkLCh colour ops, grading, vignette, gamut map, sRGB
encode, curves, grain) on the device. Earlier stages still run on the CPU and are
uploaded (per-stage hybrid). Stage results are cached per view next to the CPU
StageCache (new `StageCache::extension`).

The CPU pipeline stays the oracle and shares its resolved parameters with the
kernels: `finish::FinishParams` / `mask_terms`, `pipeline::plan` (stage-cache keys),
`local::plane_sigmas` / `nr_params` / `wb_matrix_for`, exact LUTs and OkLab
matrices exported for the shader prelude. Equivalence tests (skip without an
adapter): mean |d| < 0.5 LSB, max <= 3 LSB; measured max 1 LSB on Apple M4 Pro.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-01 02:29:54 -04:00

..

src

M5.2a: lightcraft-gpu crate (wgpu compute) with the per-pixel stage on the GPU

2026-10-01 02:29:54 -04:00

Cargo.toml

M0.1/M0.2: workspace, xtask (layers/wasm/ci/stats), geom, color, raster

2026-09-30 10:04:12 -04:00