From 53d62b8fcbb639bd625777c8f1c01764445fb1c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= <morten.sorvig@qt.io>
Date: Tue, 9 Apr 2019 15:02:38 +0200
Subject: macOS: set layer.delegate when setting a layer

Fixes flicker with Qt 5.12.2 on macOS 10.14.4.

Change-Id: Ibb866d4339ecafae5fb573a653a2fb0f6238d704
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
---
 src/plugins/platforms/cocoa/qnsview_drawing.mm | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/plugins')

diff --git a/src/plugins/platforms/cocoa/qnsview_drawing.mm b/src/plugins/platforms/cocoa/qnsview_drawing.mm
index 490dbe8c4c..3690d6ebb4 100644
--- a/src/plugins/platforms/cocoa/qnsview_drawing.mm
+++ b/src/plugins/platforms/cocoa/qnsview_drawing.mm
@@ -154,6 +154,7 @@
         << "due to being" << ([self layerExplicitlyRequested] ? "explicitly requested"
             : [self shouldUseMetalLayer] ? "needed by surface type" : "enabled by macOS");
     [super setLayer:layer];
+    layer.delegate = self;
 }
 
 - (NSViewLayerContentsRedrawPolicy)layerContentsRedrawPolicy
-- 
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