Are you aware of the darktable-generate-cache command? https://darktable.gitlab.io/doc/en/overview_chapter.html#darktable_generate_cache_commandline_parameters
On my slow laptop with no discrete GPU, using arrows to move between single photos on lighttable results in a brief flash if the thumbnail is not cached, but one it has been cached the transition between photos is very smooth. On Sun, 11 Oct 2020 at 08:38, <juli...@i2pmail.org> wrote: > Thanks Matthew, Chris and others, > > I've dedicated more time to solving this. > > "Snapshots" (or what I would call the "Compare" section where a person can > "Take snapshots") looks useful. I regret that it doesn't suit the use-case > where a person simply needs to go through the photos in a slideshow-like > fashion, to compare subtle differences and determine what they'll do. > > I tried the Slideshow feature. > > The computer turned into a rocket system. I've never heard it work so > hard. I thought it might blow up (version 3.2.1 linux). All I did was tap > forward and back a couple times to test how Darktable would handle the > transitions. For 7 minutes my computer was not responsive. For 3 minutes my > mouse cursor was frozen. I was on the verge of resetting the machine, but > didn't because the noise it was making was improving. > > I tried searching for the 'Culling Mode' and found this resource ( > https://discuss.pixls.us/t/help-with-culling-mode-in-darktable/12296 > sorry but searching the official documentation didn't work without > javascript). I discovered that a user can hold "W" or "TAB" to get a > fullscreen mode. Great! > > Unfortunately, I still got flashes. > > The reason for the flash is the photo is drawn in the top-left of the > lighttable panel and is then re-positioned to the center of the screen. A > bit disturbing. > > The "Culling" mode gave me a similar flash. A tiny 10x10 pixel crop of the > image is drawn in the top-left of the lighttable before the image is > quickly re-drawn in the center of the screen. > > My last attempt was to try the Lighttable's "File Manager" view. I > adjusted the slider alongside the "Mode chooser" so only 1 image is shown > at a time, rather than the usual 6. Now I can press the arrow keys to move > between photos. This also suffered from brief flashes. See the > "re-positioning" problem mentioned above. > > If there are no objections can we please try to fix these flashing > problems in both the lighttable and darkroom (see previous email) asap. > > To help the UI feel responsive while a photo is being added to the cache, > I suggested in the last email a change of mouse cursor and short message in > the bottom metadata bar. > > Any objections to fixing these? > > On 2020-10-06 17:51 UTC Matt Maguire <matthew.magu...@gmail.com> wrote: > > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to > darktable-dev+unsubscr...@lists.darktable.org > > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
