DisplayCAL 3.8.1 released

Florian Hoech — Sun, 19 May 2019 00:04:10 -0000

Added in this release:

[Feature] Preliminary experimental Wayland support under GNOME
3 using colord (requires ArgyllCMS 2.1 or newer as well).
Caveats do apply:
- Window placement and ordering is completely up to the
  compositor under Wayland. There is generally no way for an
  application to place its own windows at specific relative
  locations or z-orders. As a result of this, the measurement
  window cannot stay always on top or be automatically centered.
- Extra care needs to be taken that other windows are not placed
  on top.
- Video card gamma table (videoLUT) access is handled by colord.
  Some functions like viewing current videoLUT contents may not
  be available.
- The measurement window color depth is limited to 8 bits per
  channel per pixel (but dithering is used to achieve a higher
  effective color depth).
- The measurement window may be subject to desktop-wide color
  management in upcoming versions of Wayland (although the
  display device is inhibited during measurements via the
  org.freedesktop.ColorManager.Device[1] D-Bus API which should
  prevent this, and as a fallback a linear calibration sRGB
  profile is temporarily installed during measurements if the
  D-BUs API is unavailable, which should result in an identity
  transform, i.e. effectively no color management, as well as
  linear video card gamma tables).
- Application support for color management under Wayland via
  colord still seems to lacking[2] (although the list may well be
  out-of-date).
- Only tested under GNOME 3 (Fedora 30, Ubuntu 19.04). Support
  for other desktop environments will need to be implemented
  separately until Wayland gains a color management and
  calibration/profiling protocol.
[Feature] LG OLED 3D LUT format.

[1] https://www.freedesktop.org/software/colord/gtk-doc/Device.html
[2] https://www.freedesktop.org/software/colord/faq.html#application-support

Changed in this release:

[Enhancement] If the currently used ArgyllCMS version is not a
standard version, but also not a beta, do not offer to switch
to an installed official stable version if it's otherwise the
same version number.
[Enhancement] Include Quantum Dot LED (Samsung QLED Q9F)
spectral sample colorimeter correction when importing for i1
Display Pro and ColorMunki Display (sourced from community
colorimeter corrections database).
[UI] (Debian, Fedora, Ubuntu) Use wxPython Phoenix if
installed.
Prisma, Resolve: Set pattern generator background color to
pattern color if using fullscreen patterns.

Fixed in this release:

[Moderate] UnicodeDecodeError when a CCSS file contains unicode
characters in the display device description (regression of a
change in DisplayCAL 3.8 to use localized technology
descriptions, SVN revision r5810).
[Minor] APL calculation for Prisma and Resolve pattern
generators was off by a few percent depending on pattern area
and current pattern color.
[Minor] Quick reporting on calibrated or uncalibrated display
did not try to detect output levels if set to “Auto”.
[Trivial] More gracefully deal with faulty tags in ICC profiles
(fixes ICC profile information unhandled exception for colord-
created profiles with malformed targ tags).
[Trivial] [UI] Correctly update the audio button state on
progress dialogs when changed on a previous window.
[Cosmetic] [UI] Various minor potential rendering glitches.
[Cosmetic] [UI] Add work-arounds for various Wayland-related
wxPython rendering quirks and bugs (e.g. spacing around
windows, popup menu placement).
[Trivial] Try to work around sporadic colord profile
installation quirks (“The profile was not added in time”).

Recent changes to DisplayCAL 3.8.1 released

DisplayCAL 3.8.1 released