GraphicsOffloading: Missing hole punching in some cases (GL renderer)
Continuation of #6499 (closed) but only for the legacy GL renderer, probably needing something akin to !7009 (merged) as the glitches look very similar. Unfortunately it is far from obvious to me how that could be done.
Probably low-prio as it mainly/only affects GLES 2.0 devices - OTOH these often benefit above-average from Wayland offloading. Also I hope we'll be able to use offloading for sw-decoded video in the future as well, making it more common.
Playing the Kodi "MPEG2 1080i/29.97" sample on an almost 16 years old Thinkpad 400 with livi: