427856 2020-10-17 10:03:53 +0000 Enable build with OpenGL ES-only systems (mainly ARM) 2021-03-12 12:52:36 +0000 1 1 2 Applications krita General git master (please specify the git hash!) unspecified Linux RESOLVED DUPLICATE 421136 NOR normal --- 0 alvin krita-bugs-null polypa 0 oldest_to_newest 1965789 0 alvin 2020-10-17 10:03:53 +0000 After a bit of help on IRC, `wrn` was able to build Krita from source for Raspberry Pi 4 after some changes to the source. They also posted their experience [1]. It would be nice if Krita can fix its build issues and re-enable the flatpak arm/aarch64 builds and other distro packages. I also have a few extra notes and questions: - Do *not* assume that ARM only has OpenGL ES available. Incidentally, Debian on Aarch64 builds Qt with desktop OpenGL support (see also QTBUG-72128 [2] and the mailing list thread linked in the comments). Therefore, any checks should rely on Qt's defines and not the target ARCH. - Why would Krita need to set `QT_OPENGL_ES_3` (also related to Android)? Surely it is supposed to be set by Qt as part of its configure option/checks? - Can we eliminate the need of its `HAS_ONLY_OPENGL_ES` define and just rely on Qt's defines? From what I gathered if `QT_OPENGL_ES` is defined that means the Qt build is configured for OpenGL ES only (dynamic OpenGL, i.e. ANGLE, should not have it defined). - OCIO needs OpenGL, but I thought it can also be used with OpenGL ES (otherwise it wouldn't work with ANGLE)? [1]: https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=288461 [2]: https://bugreports.qt.io/browse/QTBUG-72128 1965797 1 polypa 2020-10-17 10:46:44 +0000 Hello I am 'wrn' on freenode - I just tested to rebuild without add_definitions(-DQT_OPENGL_ES_3) in libs/ui/CMakeLists.txt It builds and runs fine , so that was not needed. I will be very happy to help with testing if anyone picks this up. 2014838 2 alvin 2021-03-12 12:52:36 +0000 Looks like this is actually a duplicate of bug 421136 so I'm marking it as such. *** This bug has been marked as a duplicate of bug 421136 ***