From 1e44495f7c523ccead6facf6362eb1285bb8f4cc Mon Sep 17 00:00:00 2001
From: Brad Davis <bdavis@saintandreas.org>
Date: Fri, 31 Jul 2015 15:50:00 -0700
Subject: [PATCH] Initialize the GL widget with the 4.1 core profile

---
 interface/src/GLCanvas.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/interface/src/GLCanvas.cpp b/interface/src/GLCanvas.cpp
index 705a98b855..57c6ae40a7 100644
--- a/interface/src/GLCanvas.cpp
+++ b/interface/src/GLCanvas.cpp
@@ -19,7 +19,22 @@
 
 const int MSECS_PER_FRAME_WHEN_THROTTLED = 66;
 
-GLCanvas::GLCanvas() : QGLWidget(QGL::NoDepthBuffer | QGL::NoStencilBuffer),
+static QGLFormat& getDesiredGLFormat() {
+    // Specify an OpenGL 3.3 format using the Core profile.
+    // That is, no old-school fixed pipeline functionality
+    static QGLFormat glFormat;
+    static std::once_flag once;
+    std::call_once(once, [] {
+        glFormat.setVersion(4, 1);
+        glFormat.setProfile(QGLFormat::CoreProfile); // Requires >=Qt-4.8.0
+        glFormat.setSampleBuffers(false);
+        glFormat.setDepth(false);
+        glFormat.setStencil(false);
+    });
+    return glFormat;
+}
+
+GLCanvas::GLCanvas() : QGLWidget(getDesiredGLFormat()),
     _throttleRendering(false),
     _idleRenderInterval(MSECS_PER_FRAME_WHEN_THROTTLED)
 {