darktable-org / darktable-org/darktable

color zones: early wraparound with positive mixing and single curve point

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#19,792 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
C
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Description

Is there an existing issue for this?
  • I checked and did not find my issue in the already reported ones
Describe the bug

See #10069
Wraparound point is closer to the maximum this time, otherwise everything is exactly the same.

Steps to reproduce

See #10069

Expected behavior

No response

Logfile | Screenshot | Screencast

See #10069

Commit

It was already bisected in, you guessed it, #10069

Where did you obtain darktable from?

darktable.org / GitHub release

darktable version

5.0.1-2

What OS are you using?

Linux

What is the version of your OS?

Debian Trixie

Describe your system

No response

Are you using OpenCL GPU in darktable?

No

If yes, what is the GPU card and driver?

No response

Please provide additional context if applicable. You can attach files too, but might need to rename to .txt or .zip

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading issue #10069, which contains the reproduction steps, evidence, and bisected commit referenced here. Reproduce the color-zones behavior on darktable 5.0.1-2 under Debian Trixie and compare the wraparound point with the single-curve-point case; done means the early wraparound is understood and corrected.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
computer-graphics, desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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