f692c527e7
For backend handled cursors, if nothing else changes on the clutter stage, we end up not sending out frame callbacks since clutter doesn't draw a new frame. To fix this, we'll keep cursor surfaces' frame callbacks separate from other surfaces' and trigger them from the new MetaCursorRenderer::cursor-painted signal which handles both software and hardware cursors. https://bugzilla.gnome.org/show_bug.cgi?id=749913