dr-export gains write_linear_dng — LinearRaw, DNG 1.4, u16 samples at
the sensor's scale, the body's matrices with their illuminants, the
as-shot neutral, the EXIF block an export writes — streamed strip by
strip through a closure so the composite is never held (FR-MRG-11). The
tiff crate's directory is a map, so PhotometricInterpretation is written
over what new_image set, which is the trick the S15.1 spike thought it
had to hand-roll around. The test reads the file back through rawler.
dr-decode's RawImage carries samples_per_pixel (a linear DNG is 3), the
body's profile with its calibrations mapped back to EXIF illuminant
codes, and the cleaned make and model. The GPU uploads a three-sample
image as it is, normalised by black and white like a photosite, through
a full f16 conversion — subnormals kept, because a 14-bit LSB sits at
f16's smallest normal and rounding it to zero would crush exactly the
shadows the file was written to keep.
`cargo fmt --check` is a required step and had drifted across 45 files. Most of
it arrived this week: several operations were written in parallel worktrees and
merged by hand, and a hand-merge resolves conflicts without ever running the
formatter over the result.
No behaviour changes — this is `cargo fmt --all` and nothing else, kept as its
own commit so the next reader can skip it wholesale rather than search it for
one that matters.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The unit tests either side of the base curve check halves — that the shipped
database parses and lifts its midtones, and that the generated WGSL evaluates
a curve in the right place. Neither would notice if the two agreed with each
other and both were wrong: a curve packed into the wrong uniform slots, or a
flag read from the wrong component, satisfies both and renders nothing.
So render real pixels. A flat frame through a neutral edit, once with the
Canon EOS 6D's curve looked up by name from the YAML and once with the
identity, asserting what a base curve is actually for — midtones lifted,
black still black, white still white, monotone the whole way — plus the
number an unprofiled body must still produce, so "never worse than today"
is a value rather than a promise.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
dtourolle
