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From 76c11653522453efcf86f6f2f53bca1a497ea350 Mon Sep 17 00:00:00 2001
From: David Edmundson <kde@davidedmundson.co.uk>
Date: Thu, 28 Mar 2019 11:43:37 +0000
Subject: Enable QSurfaceFormat::ResetNotification on new Qt
This fixes graphical glitches on nvidia after VT switching.
It's opt-in as it requires code paths to handle glGetError differently.
The version comparison is because my early implementations missed a code
path. This was fixed in 5.12.2, but we may as well play safe
(cherry picked from commit cd4e1fa21e1ab7178fa5d2ef858f3271575fd315)
---
src/greeter/GreeterApp.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/greeter/GreeterApp.cpp b/src/greeter/GreeterApp.cpp
index d47998e..4e117a7 100644
--- a/src/greeter/GreeterApp.cpp
+++ b/src/greeter/GreeterApp.cpp
@@ -40,6 +40,9 @@
#include <QDebug>
#include <QTimer>
#include <QTranslator>
+#include <QLibraryInfo>
+#include <QVersionNumber>
+#include <QSurfaceFormat>
#include <iostream>
@@ -309,6 +312,12 @@ int main(int argc, char **argv)
qDebug() << "High-DPI autoscaling not Enabled";
}
+ if (QLibraryInfo::version() >= QVersionNumber(5, 13, 0)) {
+ auto format(QSurfaceFormat::defaultFormat());
+ format.setOption(QSurfaceFormat::ResetNotification);
+ QSurfaceFormat::setDefaultFormat(format);
+ }
+
QGuiApplication app(argc, argv);
QCommandLineParser parser;
--
2.38.1
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