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/ubuntu/+source/gtk+3.0/+bug/1960947/+attachment/5561410/+files/testcase.c -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1960947 Title: Graphical issues for GtKGL in software rendering Status in gtk+3.0 package in Ubuntu: Fix Released Status in gtk+3.0 source package in Focal: Fix Committed Bug description: * Issue GTK applications using GL graphic show corruption problems under software rendering * Test case 1. install gtk-3-examples 2. $ LIBGL_ALWAYS_SOFTWARE=1 gtk3-demo 3. select the gl example, it should render without issues * Regression potentiel The change is in the GL backend so check for rendering issues in GTK softwares using GL, including flutter applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1960947/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
