From 154ccb8932095f2f180cda149eb912c68fef0348 Mon Sep 17 00:00:00 2001
From: Ryan Huffman <ryanhuffman@gmail.com>
Date: Mon, 20 Jun 2016 16:10:07 -0700
Subject: [PATCH] Add glVersionToInteger to GLHelpers

---
 libraries/gl/src/gl/GLHelpers.cpp | 8 ++++++++
 libraries/gl/src/gl/GLHelpers.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/libraries/gl/src/gl/GLHelpers.cpp b/libraries/gl/src/gl/GLHelpers.cpp
index 302e0b8515..79b39a2331 100644
--- a/libraries/gl/src/gl/GLHelpers.cpp
+++ b/libraries/gl/src/gl/GLHelpers.cpp
@@ -5,6 +5,7 @@
 #include <QtGui/QSurfaceFormat>
 #include <QtOpenGL/QGL>
 #include <QOpenGLContext>
+#include <QtCore/QRegularExpression>
 
 const QSurfaceFormat& getDefaultOpenGLSurfaceFormat() {
     static QSurfaceFormat format;
@@ -39,6 +40,13 @@ const QGLFormat& getDefaultGLFormat() {
     return glFormat;
 }
 
+int glVersionToInteger(QString glVersion) {
+    QStringList versionParts = glVersion.split(QRegularExpression("[\\.\\s]"));
+    int majorNumber = versionParts[0].toInt();
+    int minorNumber = versionParts[1].toInt();
+    return majorNumber * 100 + minorNumber * 10;
+}
+
 QJsonObject getGLContextData() {
     if (!QOpenGLContext::currentContext()) {
         return QJsonObject();
diff --git a/libraries/gl/src/gl/GLHelpers.h b/libraries/gl/src/gl/GLHelpers.h
index ddb254f1c5..477bf7abc8 100644
--- a/libraries/gl/src/gl/GLHelpers.h
+++ b/libraries/gl/src/gl/GLHelpers.h
@@ -27,5 +27,6 @@ void setGLFormatVersion(F& format, int major = 4, int minor = 5) { format.setVer
 const QSurfaceFormat& getDefaultOpenGLSurfaceFormat();
 const QGLFormat& getDefaultGLFormat();
 QJsonObject getGLContextData();
+int glVersionToInteger(QString glVersion);
 
 #endif