Georges Basile Stavracas Neto 6be6f04456 clutter/paint-nodes: Add opacity overriding to ClutterActorNode
Some effects, such as ShellBlurEffect and ClutterOffscreenEffect, need
to make sure the actor is painted fully opaque. With ClutterActorNode,
however, that is currently not possible.

Add a new 'opacity' parameter to clutter_actor_node_new(). It follows
the opacity override heuristic, where -1 means disable, and anything
else is clamped to [0, 255].

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1340
2020-07-06 10:54:49 -03:00
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