From 1b61390856ce336c82f7b99def574775893bf4f2 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Date: Tue, 1 Dec 2015 12:31:14 +0100
Subject: Reduce flushes with repaint() when GL-based compositing is active

Task-number: QTBUG-49655
Change-Id: I7a5d08f681a7d87709aac745154730764040e922
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>
---
 src/gui/painting/qplatformbackingstore.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/gui/painting/qplatformbackingstore.cpp')

diff --git a/src/gui/painting/qplatformbackingstore.cpp b/src/gui/painting/qplatformbackingstore.cpp
index 4e26d8f741..cda2446a5e 100644
--- a/src/gui/painting/qplatformbackingstore.cpp
+++ b/src/gui/painting/qplatformbackingstore.cpp
@@ -301,6 +301,8 @@ void QPlatformBackingStore::composeAndFlush(QWindow *window, const QRegion &regi
         return;
     }
 
+    QWindowPrivate::get(window)->lastComposeTime.start();
+
     QOpenGLFunctions *funcs = context->functions();
     funcs->glViewport(0, 0, window->width() * window->devicePixelRatio(), window->height() * window->devicePixelRatio());
     funcs->glClearColor(0, 0, 0, translucentBackground ? 0 : 1);
-- 
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