From bc0974618fdcfd7b949d3d43d95e4efc466438ef Mon Sep 17 00:00:00 2001
From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Thu, 25 Feb 2021 10:31:47 -0300
Subject: [PATCH] layout: Don't build input region rects on Wayland

This is an X11-specific routine, and building the list of input region rects
on Wayland is a waste, since it incurs in many trampolines only to throw them
in the trash.

Don't build input region rects on Wayland. By modifying the 'wantsInputRegion'
variable, it also skips actors that only update input, which is another small
optimization for Wayland.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1678>
---
 js/ui/layout.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/js/ui/layout.js b/js/ui/layout.js
index c2c8151c1..bf251ba00 100644
--- a/js/ui/layout.js
+++ b/js/ui/layout.js
@@ -959,7 +959,10 @@ var LayoutManager = GObject.registerClass({
 
         let rects = [], struts = [], i;
         let isPopupMenuVisible = global.top_window_group.get_children().some(isPopupMetaWindow);
-        const wantsInputRegion = !isPopupMenuVisible && Main.modalCount === 0;
+        const wantsInputRegion =
+            !isPopupMenuVisible &&
+            Main.modalCount === 0 &&
+            !Meta.is_wayland_compositor();
 
         for (i = 0; i < this._trackedActors.length; i++) {
             let actorData = this._trackedActors[i];