Blinking on resize or Ui updates on screen that have low frame rates.

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## 5.3.0 - undefined
 
+### Fixed
+- Blinking on resize or Ui updates on screen that have low frame rates.
+
 ### Added
 - Screen Sharing
 

linphone-app/src/app/App.cpp

@@ -269,7 +269,11 @@ bool App::setFetchConfig (QString filePath) {
 
 
 App::App (int &argc, char *argv[]) : SingleApplication(argc, argv, true, Mode::User | Mode::ExcludeAppPath | Mode::ExcludeAppVersion) {
-	
+	// Ignore vertical sync. This way, we avoid blinking on resizes(and other refresh steps like layouts etc.).
+	auto ignoreVSync = QSurfaceFormat::defaultFormat();
+	ignoreVSync.setSwapInterval(0);
+	QSurfaceFormat::setDefaultFormat(ignoreVSync);
+	//-------------------
 	connect(this, SIGNAL(applicationStateChanged(Qt::ApplicationState)), this, SLOT(stateChanged(Qt::ApplicationState)));
 	
 	setWindowIcon(QIcon(Constants::WindowIconPath));