From: Daniel van Vugt <daniel.van.vugt@canonical.com>
Date: Wed, 8 Jul 2020 10:06:39 +0000 (+0800)
Subject: workspaceSwitcherPopup: Set offscreen redirect always
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~684^2^2~145
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=9363fd35243ee2fe502725951389d2bbc18483a9;p=gnome-shell.git

workspaceSwitcherPopup: Set offscreen redirect always

Because for most frames during a workspace switch it's not changing and
we can repaint it faster if it's cached on the GPU as a single texture.

This seems to reduce the render time for workspace switching by more
than 20%.

https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1356
---

diff --git a/js/ui/workspaceSwitcherPopup.js b/js/ui/workspaceSwitcherPopup.js
index eebf9db3b..4613e96ec 100644
--- a/js/ui/workspaceSwitcherPopup.js
+++ b/js/ui/workspaceSwitcherPopup.js
@@ -11,7 +11,10 @@ var DISPLAY_TIMEOUT = 600;
 var WorkspaceSwitcherPopupList = GObject.registerClass(
 class WorkspaceSwitcherPopupList extends St.Widget {
     _init() {
-        super._init({ style_class: 'workspace-switcher' });
+        super._init({
+            style_class: 'workspace-switcher',
+            offscreen_redirect: Clutter.OffscreenRedirect.ALWAYS,
+        });
 
         this._itemSpacing = 0;
         this._childHeight = 0;