[Touch-packages] [Bug 1960947] Re: Graphical issues for GtKGL in software rendering

I can confirm that libgtk-3-0 3.24.20-0ubuntu1.1 from focal-proposed fixes the rendering issue. I have tested with: 1) the attached minimal test case: gcc -o testcase testcase.c `pkg-config --cflags --libs gtk+-3.0` ./testcase 2) a full-blown flutter app: snap install --classic flutter flutter

[Touch-packages] [Bug 1960947] Re: Graphical issues for GtKGL in software rendering

Hi all. The conditions for reproducing the issue: CSD + OpenGL + swrast. Notice that the GTK GL example doesn't use CSD i.e. it doesn't set a custom GtkWindow titlebar. I have attached a small test case that reproduces the issue. ** Attachment added: "testcase.c" https://bugs.launchpad.net/ub