Addinng more info to @priort’s answer:
@TurboGit Sorry didn’t keep a close eye on this branch during the fall as I tried to hunt down a solution to merge elsewhere and then took a break for other things. I had preferred to not integrate it in filmic as filmic is making several assumptions about white and black points which aren’t needed in this module as it is defined for infinity. So it’s essentially not compatible with filmic.
Link: [WIP] sigmoid tone mapping module by jandren · Pull Request #7820 · darktable-org/darktable · GitHub
@ariznaf Anyway, there are works in parallel going on about recovering clipped highlights, check this thread: Guiding laplacians to restore clipped highlights - #70 by Juha_Lintula
(it starts with a Aurelien’s new method and Jens-Hanno presents another method that he was working at the same time).
Jens-Hanno’s PR: [WIP] Segmentation based highlights recovery for bayer sensors by jenshannoschwalm · Pull Request #10716 · darktable-org/darktable · GitHub
Aurelien’s PR: Highlights reconstruction : introduce new method by aurelienpierre · Pull Request #10711 · darktable-org/darktable · GitHub