On Wed, Nov 28, 2018 at 05:03:51PM +0300, Dmitry Shachnev wrote: > On Tue, Nov 27, 2018 at 11:00:52PM -0800, Steve Langasek wrote: > > $ grep-dctrl -n -sSource:Package -FDepends \ > > -e > > 'libqt5(gui|3drenderer|quick|quickparticles|quickwidgets|multimediawidgets)5[[:space:]]*(\(>= > > 5\.[0-9.]*\))(?|$),' \ > > > > /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_xenial_*binary-amd64_Packages > > | sort -u > > maliit-plugins > > ovito > > pyqt5 > > qml-box2d > > qt3d-opensource-src > > qtbase-opensource-src > > qtdeclarative-opensource-src > > qtubuntu-cameraplugin-fake > > stellarium > > wallch > > $ > > > > Every single other binary package that depends on libqt5gui5 (etc) in Ubuntu > > 16.04 has an ORed dependency on libqt5gui5 | libqt5gui5-gles. > > Ah, this is interesting. > > The amount of packages will probably be larger in the current sid, > but it should not be more than 20 packages. > > Plus there are packages which are using QT_OPENGL_ES macro for conditional > compilation (as I mentioned in my previous mail), but there are also not many > of them: > > gammaray > goldendict > gst-plugins-good1.0 > kamoso > krita > leocad > openclonk > phonon-backend-gstreamer > qtav > qt-gstreamer > qtwebkit-opensource-src > qtwayland-opensource-src > qtcharts-opensource-src >...
There are also packages like qmmq or kdenlive that use Qt5Gui_OPENGL_IMPLEMENTATION for conditional compilation.[1] ES/non-ES is in so many places part of the Qt API that I doubt this could be sorted out quickly. Qt already supports runtime ES/non-ES in the same library build on Windows [2], something like that might also be doable for Linux if anyone (Linaro? Canonical?) with a real interest in that would work on making it happen. Some of the listed applications already set Qt::AA_UseOpenGLES or Qt::AA_UseDesktopOpenGL for the Windows case, but there would surely be additional application side fixes required after someone added dynamic OpenGL selection also for Linux to Qt. > Dmitry Shachnev cu Adrian [1] https://codesearch.debian.net/search?q=Qt5Gui_OPENGL_IMPLEMENTATION [2] http://doc.qt.io/qt-5/windows-requirements.html#dynamically-loading-graphics-drivers -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed
