dotCooCoo ddae31bad4 TIFF: alpha after another extra sample places and opens as transparency ...

A CMYK or grayscale TIFF reads its alpha from the first extra sample whose
ExtraSamples value is 1 or 2, wherever it comes among the extra samples, at
8 and 16 bits, chunky or planar. TIFF 6.0 gives each extra sample its own
ExtraSamples value, in order, and asks readers to skip extra samples they do
not use.

- A CMYK file with alpha after an unspecified extra sample was kept as
  opaque inks; it is now shown as RGB with its alpha.
- A grayscale file with alpha after an unspecified extra sample opened
  opaque.
- A six-sample CMYK file whose ExtraSamples tag lists only an unspecified
  value no longer reads that sample as transparency.
- A white-is-zero grayscale file with an alpha channel opens; it failed to
  read before.

2026-11-14 08:00:43 -08:00

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examples

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src

TIFF: alpha after another extra sample places and opens as transparency

2026-11-14 08:00:43 -08:00

tests

Merge pull request #7528 from dotCooCoo/feat/ai-style-named-gradients

2026-11-14 21:54:55 +07:00

Cargo.toml

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