set default format for QSurface to handle NVidia context loss events

should fix wrong OpenGL rendering after suspend on Linux with NVidia
binary OpenGL driver

close #3759

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

diff --git a/src/gui/main.cpp b/src/gui/main.cpp
index ec4a347eb839da7c659cb4965581c567d0346289..ef5747974dcacc33e527185b17c4ec4c5a8b6a77 100644 (file)
--- a/src/gui/main.cpp
+++ b/src/gui/main.cpp
@@ -39,6 +39,7 @@
 #include <QDebug>
 #include <QQuickStyle>
 #include <QQuickWindow>
+#include <QSurfaceFormat>
 
 using namespace OCC;
 
@@ -113,6 +114,10 @@ int main(int argc, char **argv)
     }
 #endif
 
+    auto surfaceFormat = QSurfaceFormat::defaultFormat();
+    surfaceFormat.setOption(QSurfaceFormat::ResetNotification);
+    QSurfaceFormat::setDefaultFormat(surfaceFormat);
+
 // check a environment variable for core dumps
 #ifdef Q_OS_UNIX
     if (!qEnvironmentVariableIsEmpty("OWNCLOUD_CORE_DUMP")) {