Assuming the current value is 4 might be incorrect in this case but also won't cause the bug unless they also fail to call "glPixelStorei(GL_UNPACK_ALIGNMENT, 4)" somewhere that they need it to be 4.
Where you see Qt code that uses alignment 1, that's not relevant here because it will play perfectly with Mir. The problem is elsewhere... some GL unpacking without a glPixelStorei call is being done and that location expects/requires alignment of 4. So I guess start by searching for all glTexImage2D calls and ensure they are all /immediately/ preceded by glPixelStorei. It's possible Qt already has some housekeeping for that but then the bind call happens in the middle: Qt: glPixelStorei(GL_UNPACK_ALIGNMENT, 4); Qt: calls the offending Mir bind code Qt: glTexSubImage2D or glTexImage2D So the fix then would still be in qtdeclarative; either reorder lines 1 & 2, or add another glPixelStorei call in before the glTex*Image2D calls in Qt. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtdeclarative-opensource- src in Ubuntu. https://bugs.launchpad.net/bugs/1583088 Title: Randomly corrupt font / text / characters in Unity8 Status in Canonical System Image: In Progress Status in Mir: Won't Fix Status in gnome-desktop package in Ubuntu: Invalid Status in mir package in Ubuntu: Won't Fix Status in qtdeclarative-opensource-src package in Ubuntu: New Status in qtmir package in Ubuntu: In Progress Status in unity8 package in Ubuntu: Invalid Bug description: Corrupted characters in text rendering. Only happens after starting non-GL application, like GTK application or mir_demo_client_fingerpaint. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1583088/+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
