Measured against After Effects at 32 bpc:
- Classic Color Dodge, Classic Color Burn and Classic Difference at partial opacity: AE
fades the source toward the mode's neutral colour (0 for Dodge and Difference, 1 for
Burn) by the opacity and applies the classic formula at full strength (b / (1 − k·o),
|b − k·o|, 1 − (1 − b) / (1 − k·(1 − o))). We mixed the full-strength result by opacity:
up to 45/255 off on ordinary 0–1 footage.
- Overlay, Exclusion, Luminosity, Color Burn and Classic Color Burn keep their plain formula
for values above 1 (HDR passes). They were missing from `supports_hdr`, so their inputs
were clamped to 0–1 (Exclusion was up to 208/255 off); Classic Color Burn also clamped
its result at 0, where AE keeps negative values.
The CPU blend (color::blend_pixel) and the GPU kernel (common.wgsl) change together.
Tests: the reporter's formulas for each case (blend.rs); the CPU/GPU parity test of every
blend mode at every bit depth (over-range values, 70 % opacity) passes.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QiAJeFttZp83Fh7YuzAR5f
These crates have no production panic sites: add the deny attribute so they stay clean
(geom, color, model, automation, host, export, plugin, and the desktop, CLI and web apps). The
plugin's wasm-only test module gets a separate cfg(test) attribute so clippy recognises it as
test code.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
- GPU in browser job workers: each job worker opens its own WebGPU device
(deferred readbacks); the Render Queue export and the analyses' frame loops
are futures (render::passes, offload::run_request_async) whose frames
render in passes, awaiting the device between them. GPU particles and
Advanced 3D read back under keys too. workers.jobs reports passes and
readbacks; the smoke test measures them.
- Layer buffers in the browser's OPFS disk cache: frame workers back their
layer caches with a PrefetchStore; the page plans what to fetch before a
request from recent misses (LayerPrefetch over the shared DiskIndex).
- Templates embed footage (default on, size-capped with a warning) and
creating from a template extracts it next to the new project / into
browser storage.
- ICC LUT profiles (lut8/lut16/lutAtoB/lutBtoA, from the public ICC spec) in
Simulate Output > My Custom RGB, baked into a 3D LUT for the viewer.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
8/16 bpc projects clamp and quantise layer pixels after source/masks and
every effect, and the comp after every layer (16 bpc = 0..32768); 32 bpc
keeps over-range values. Blend modes without HDR support clamp their inputs
in 32 bpc. Working space (sRGB, Rec. 709, Rec. 2020, Display P3; matrices
derived from the published primaries), footage colour profiles from stream
metadata or Interpret Footage, Linearize Working Space and Blend Colors Using
1.0 Gamma. Layer cache keys include the colour settings. Project panel depth
button: click cycles, Alt-click opens Project Settings.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude