From: Robert Mader <robert.mader@posteo.de>
Date: Sun, 6 Jun 2021 12:29:47 +0000 (+0200)
Subject: windowManager: Use MetaWindowActor.paint_to_content() for window effects
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~574^2^2~25
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=36a1fb78cddf4be8b26430ff3ab998600356f075;p=gnome-shell.git

windowManager: Use MetaWindowActor.paint_to_content() for window effects

Previously we used `get_image()`, which returned `cairo_surface`,
in order to create a `ClutterContent` with a screenshot of the
`MetaWindowActor`. This added a roundtrip from GPU to CPU memory.

Instead, use the new `paint_to_content()` API which lets us use a
`CoglTexture` directly as source of our `ClutterContent`.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1879>
---

diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index c485fd0f9..caaecec41 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -1283,7 +1283,7 @@ var WindowManager = class {
     _prepareAnimationInfo(shellwm, actor, oldFrameRect, _change) {
         // Position a clone of the window on top of the old position,
         // while actor updates are frozen.
-        let actorContent = Shell.util_get_content_for_window_actor(actor, oldFrameRect);
+        let actorContent = actor.paint_to_content(oldFrameRect);
         let actorClone = new St.Widget({ content: actorContent });
         actorClone.set_offscreen_redirect(Clutter.OffscreenRedirect.ALWAYS);
         actorClone.set_position(oldFrameRect.x, oldFrameRect.y);