8000 External rastermask not scaled correctly · Issue #19010 · darktable-org/darktable · GitHub
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External rastermask not scaled correctly #19010
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@acebone

Description

@acebone

Is there an existing issue for this?

  • I checked and did not find my issue in the already reported ones

Darktable

Darktable-5.2.0-x86_64.AppImage
module: external rastermask

Describe the bug

Correctly scaled external rastermask is not scaled or sized as expected in Darktable.

In Gimp the external rastermask seems to be scaled precisely as expected.

I enclose the files I think may be needed to diagnose the problem - a zip file can be downloaded here.

The subfolder mask-misalignment contains screenshots of mask alignment in Gimp and in Darktable. In Gimp the alignment seems perfect, in Darktable it's very much off.

In Darktable:
Image

In GIMP
Image

Steps to reproduce

  1. create pfm mask in your designated rastermask folder
  2. choose mask in the "external rastermask" module
  3. apply the external mask in any other module

Expected behavior

No response

Logfile | Screenshot | Screencast

No response

Commit

No response

Where did you obtain darktable from?

darktable.org / GitHub release

darktable version

5.2.0

What OS are you using?

Linux

What is the version of your OS?

Ubuntu 23.10

Describe your system

RAM: 32 GB
Nvidia GPU
X11

Are you using OpenCL GPU in darktable?

Yes

If yes, what is the GPU card and driver?

NVIDIA GeForce GTX 1660 Driver Version: 570.153.02 CUDA Version: 12.8

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

No response

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