Very interesting. Maybe we’re trying different things? Using different settings? The environment could cause some difference?
This is what I did:
- selected a previously developed raw (a NEF, in my case) in the lighttable
- pressed Alt+W
- Ctrl + scrolled to get 100% zoom
- Took this screenshot:
- pressed Alt+W to exit the preview
- Opened settings, and changed
prefer performance over qualityfrom true to false - pressed Alt+W
- Ctrl + scrolled to get 100% zoom
- Took this screenshot:
My screen resolution is 1920x1080. darktable is at 3.3.0+1931~g4d0071658. OS is Kubuntu 20.10.
I’ve tried toggling OpenCL, did not have an effect.
In my darktablerc (done after restoring prefer performance over quality to true):
kofa@eagle:~/.config/darktable$ grep -i qual darktablerc
database_cache_quality=89
plugins/darkroom/demosaic/quality=at most PPG (reasonable)
plugins/darkroom/equalizer/expanded=FALSE
plugins/darkroom/equalizer/favorite=FALSE
plugins/darkroom/equalizer/modulegroup=4
plugins/darkroom/equalizer/visible=FALSE
plugins/darkroom/toneequal/expanded=FALSE
plugins/darkroom/toneequal/favorite=TRUE
plugins/darkroom/toneequal/gui_page=0
plugins/darkroom/toneequal/modulegroup=1
plugins/darkroom/toneequal/visible=TRUE
plugins/imageio/format/j2k/quality=
plugins/imageio/format/jpeg/quality=95
plugins/imageio/format/webp/quality=
plugins/lighttable/export/high_quality_processing=TRUE
plugins/lighttable/low_quality_thumbnails=TRUE
plugins/slideshow/high_quality=TRUE
kofa@eagle:~/.config/darktable$ grep -i perf darktablerc
performance_configuration_version_completed=1
ui/performance=TRUE