349fb7c297
Until the actor is destroyed, we need to have access to the MetaWindow to access some fields used for painting. Keep a strong reference to the window rather than just hoping the window will not be freed. https://bugzilla.gnome.org/show_bug.cgi?id=642787
Intro ===== Fix me. Env Vars ======== MUTTER_DISABLE_MIPMAPS - set to disable use of mipmaped windows.