From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Fri, 1 Jul 2016 21:03:39 +0000 (+0200)
Subject: Force vsync off; fixes jittery display on the NVIDIA proprietary driver.
X-Git-Tag: 1.3.1~2
X-Git-Url: https://git.sesse.net/?p=nageru;a=commitdiff_plain;h=3eca4b6fc37bba5c4204bb7716764f2d962fba60

Force vsync off; fixes jittery display on the NVIDIA proprietary driver.
---

diff --git a/main.cpp b/main.cpp
index 75ae9a7..f0f70ac 100644
--- a/main.cpp
+++ b/main.cpp
@@ -41,6 +41,11 @@ int main(int argc, char *argv[])
 	fmt.setProfile(QSurfaceFormat::CoreProfile);
 	fmt.setMajorVersion(3);
 	fmt.setMinorVersion(1);
+
+	// Turn off vsync, since Qt generally gives us at most frame rate
+	// (display frequency) / (number of QGLWidgets active).
+	fmt.setSwapInterval(0);
+
 	QSurfaceFormat::setDefaultFormat(fmt);
 
 	QGLFormat::setDefaultFormat(QGLFormat::fromSurfaceFormat(fmt));