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[Bicyclops <1785553@xxxxxxxxxxxxxxxxxx>]

The curve setting in "Preferences > Control Points Editor > HDR and 16
Bit display" does affect the preview in the CP editor, however the
magnifier (which appears when placing a control point) is always black
on these 32-bit images, regardless which "HDR and 16 Bit display" curve
setting I use.

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https://bugs.launchpad.net/bugs/1785553

Title:
  Wrong gamma of 32-bit float images in Control Points editor

Status in Hugin:
  New

Bug description:
  Hello

  32-bit floating-point images (from RawTherapee) are overexposed in the
  Control Points editor. Maybe they have the wrong gamma applied, or the
  embedded ICC profile is not used?

  If you open the source images in GIMP-2.10.4 you will see them
  correctly with the correct gamma. They are of course very dark, so
  maybe the CP Editor is trying to make them easier to view for the user
  through dynamic range compression and increasing exposure. If that's
  the case, then nice, but the large CP editor magnification box, the
  one that magnifies the few pixels you are hovering over when placing
  new CPs, still shows a completely black preview, as you can see in
  screenshot screenshot_20180806_081643.png.

  Sample images and screenshots:
  https://filebin.net/3cp8rzg4e1t84vk2

  Please download these, as the link will expire 2 months from now.

  Operating System: Linux 4.17.0-sabayon x86_64
  Architecture: 64 bit
  Free memory: 2246320 kiB

  Hugin
  Version: 2018.0.0.5abfb4de7961
  Path to resources: /usr/share/hugin/xrc/
  Path to data: /usr/share/hugin/data/
  Hugins camera and lens database: /home/morgan/.hugindata/camlens.db
  Multi-threading using C++11 std::thread and OpenMP
  Monitor profile: B133HAN02.1 #1 2016-10-19 21-46 D6500 2.2 F-S XYZLUT+MTX

  Libraries
  wxWidgets: wxWidgets 3.0.4
  wxWidgets Library (wxGTK port)
  Version 3.0.4 (Unicode: wchar_t, debug level: 1),
  compiled at Jun 14 2018 19:21:01

  Runtime version of toolkit used is 2.24.
  Compile-time GTK+ version is 2.24.31.

  libpano13: 2.9.19 
  Boost: 1.65.0
  Exiv2: 0.26
  SQLite3: 3.23.1
  Vigra: 1.11.0
  LittleCMS2: 2.9

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