From 8a2371388d04aafca3604034de132035edd27cae Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Sat, 1 Apr 2017 20:30:06 +0200
Subject: [PATCH] Make a friendlier error message if OpenGL initialization
 fails.

---
 main.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/main.cpp b/main.cpp
index e156c59..dcaf2a6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -52,6 +52,10 @@ int main(int argc, char *argv[])
 	QGLFormat::setDefaultFormat(QGLFormat::fromSurfaceFormat(fmt));
 
 	global_share_widget = new QGLWidget();
+	if (!global_share_widget->isValid()) {
+		fprintf(stderr, "Failed to initialize OpenGL. Nageru needs at least OpenGL 3.1 to function properly.\n");
+		exit(1);
+	}
 
 	MainWindow mainWindow;
 	mainWindow.resize(QSize(1500, 850));
-- 
2.39.2