Hi, On Mon, Oct 6, 2014 at 2:40 PM, antiart <for...@gimpusers.com> wrote: > I can confirm this issue. Exactly what I experienced and what I tried. > It doesn't matter if the image is 100x100 or 10000x10000 pixels, only the > WINDOW > size makes the cursor slow. > I have a new Lenovo z50-70, which is fairly fast and powerful, fresh install > of > Windows 8.1, all updated and with the newest drivers. I tried both, a wacom > Bamboo Pen&Touch and a wacom Intuos 2, both have the lag. I also > disabled/tested > those Windows 8 tablet PC settings like hold-pen-to-right-click and the > "flicks". Still lag. > My partner suggested that the issue is related to the GPU, so i tried to force > Gimp to use the Nvidia processor, and then I forced it to the "integrated > processor". There was no difference. I also changed all my graphics settings > to > good performance and disabled the "fancy stuff". > > Interestingly I just noticed a very similar behavior in myPaint (version > 1.1.0+gite06d414). The bigger the window, the more lag. This may be related > (myPaint has an endless canvas, though). However, putting myPaint into > Fullscreen kind of fixed the lagging. Sadly, this does not work for Gimp. > There > is still the same lag, no matter if fullscreen or maximized. > > And just for the record: None of the other painting application have this > issue: > SAI, Krita, Inkscape, ArtRage, Fresh Paint. > >>I am using Gimp 2.8.14 (latest version, just installed) with Windows >>8.1 and a Wacom Intuos tablet. When I maximise, or otherwise enlarge >>the drawing window beyond around 30-40% of my screen size, the tool >>cursor becomes very laggy. When using the paintbrush, for example, the >>painted area, brush outline, and even the little markers on the ruler >>that show the cursor position, lag significantly behind the penstroke. >>With a smaller window, the tools work perfectly. There does not appear >>to be any lag when using the mouse to draw, even for a maximised >>window. >> >>I have increased the tile cache size to no effect, and when looking in >>the task manager it appears that Gimp is only using around 150 Mb or >>so. I have also tried turning the brush outline off (as suggested as >>solutions to similar problems), but this also didn't work and I would >>very much like to keep this switched on. The problem does not appear >>to be affected by canvas size or the amount of the canvas displayed.
This is a known bug which has actually been introduced by a recent version of libcairo. See https://bugzilla.gnome.org/show_bug.cgi?id=736220 A solution for the time being is using an older libcairo. In an older version of GIMP (2.8.10), save libcairo-2.dll (and maybe libpixman-1-0.dll as well), then after updating to 2.8.14, replace the newly installed DLLs by the 2 you saved. The lag bug should be gone. At least that is what a user told us in the aforementionned bug report. The actual bug will be fixed when a libcairo developer, or maybe one of us, will look closer into this. I've been meaning to do this myself as well, but never took the time for such a thing. Jehan > -- > antiart (via www.gimpusers.com/forums) > _______________________________________________ > gimp-user-list mailing list > List address: gimp-user-list@gnome.org > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list > List archives: https://mail.gnome.org/archives/gimp-user-list _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
