Hello David, I discovered a strange behavior in G’mic but perhaps this fault is produced elsewhere.
When I instruct Gimp 2.10.6 to open raw files with Darktable, Darktable produces 32-bit linear floating point files. When I open them with G’mic for Gimp they show sometimes - but not always - a random colored pattern. See attached screenshot.
Strange enough these patterns show up when the Preview is set to … Off! Sometimes they are visible when Preview is set to On though. It’s a bit random.
When I downsize these files to 16-bit integer, the problem disappears.
I am unable to determine if Darktable is responsible for this or Gimp or G’mic. I don’t find a setting in Darktable to convert my raws to 16-bit integer.
G’mic 2.3.4 for Gimp 2.10.6 on Xubuntu 18.04/64bit.