3 people adfeab1750 Composited CMYK documents now export as CMYK TIFF and JPEG with their profile (#2220) (#4199) ...

A CMYK document with several layers, masks or effects is flattened through the
RGB compositor. Its TIFF and JPEG exports were written as sRGB RGB, losing the
document's mode and ICC profile. The composite is now converted back through the
document's CMYK profile (relative colorimetric with black point compensation)
inside each parallel worker, written as four ink channels plus straight alpha at
the document depth, and tagged with that profile (the built-in coated CMYK
profile when the document is untagged). Invalid, non-CMYK or unusable profiles
are rejected. RGB-only formats keep the direct sRGB composite, and a single
plain raster layer keeps its native samples.

This fixes the output mode and tagging only: the RGB roundtrip does not
preserve original ink separations, black generation or CMYK-native blending.


Claude-Session: https://claude.ai/code/session_01BSB7fMQUccqFQekksDGWpo

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

2026-10-12 23:29:26 -04:00

..

src

Composited CMYK documents now export as CMYK TIFF and JPEG with their profile (#2220) (#4199)

2026-10-12 23:29:26 -04:00

book.toml

docs: add mdBook and security documentation foundation (#35)

2026-10-04 12:31:18 -04:00