Jonas Dreßler 0da8a49719 clutter/stage: Clarify comments in add_to_stage_clip() a bit
The first comment isn't really needed anymore since
the is_full_stage_redraw_queued() underneath is quite self-explaining.

Also rephrase the second comment a bit, including that
_clutter_paint_volume_get_stage_paint_box() does the aligning to the
pixel grid.

Finally, the last comment also looks out of date since we do that
rounding inside _clutter_paint_volume_get_stage_paint_box(), so remove
it.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1511>
2020-11-24 18:30:19 +00:00
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