From eae8fb85997d82ecec0743ba3e470681129bff41 Mon Sep 17 00:00:00 2001
From: Qt by Nokia <qt-info@nokia.com>
Date: Wed, 27 Apr 2011 14:13:26 +0200
Subject: Initial import from qtquick2.

Branched from the monolithic repo, Qt qtquick2 branch, at commit
a4a585d2ee907746682846ae6e8a48e19deef469
---
 src/opengl/qgl.cpp | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'src/opengl/qgl.cpp')

diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 057fb55e2c..7ce35f8d1c 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -43,6 +43,7 @@
 #include "qplatformdefs.h"
 #include "qgl.h"
 #include <qdebug.h>
+#include <qglfunctions.h>
 
 #if defined(Q_WS_X11)
 #include "private/qt_x11_p.h"
@@ -1663,6 +1664,7 @@ const QGLContext *qt_gl_transfer_context(const QGLContext *ctx)
 QGLContextPrivate::QGLContextPrivate(QGLContext *context)
     : internal_context(false)
     , q_ptr(context)
+    , functions(0)
 {
     group = new QGLContextGroup(context);
     texture_destroyer = new QGLTextureDestroyer;
@@ -1671,6 +1673,8 @@ QGLContextPrivate::QGLContextPrivate(QGLContext *context)
 
 QGLContextPrivate::~QGLContextPrivate()
 {
+    delete functions;
+
     if (!group->m_refs.deref()) {
         Q_ASSERT(group->context() == q_ptr);
         delete group;
@@ -2710,6 +2714,19 @@ int QGLContextPrivate::maxTextureSize()
 #endif
 }
 
+/*!
+  Returns a QGLFunctions object that is initialized for this context.
+ */
+QGLFunctions *QGLContext::functions() const
+{
+    QGLContextPrivate *d = const_cast<QGLContextPrivate *>(d_func());
+    if (!d->functions) {
+        d->functions = new QGLFunctions(this);
+        d->functions->initializeGLFunctions(this);
+    }
+    return d->functions;
+}
+
 /*!
   Generates and binds a 2D GL texture to the current context, based
   on \a image. The generated texture id is returned and can be used in
@@ -3792,6 +3809,20 @@ QGLWidget::QGLWidget(QWidget *parent, const QGLWidget* shareWidget, Qt::WindowFl
     d->init(new QGLContext(QGLFormat::defaultFormat(), this), shareWidget);
 }
 
+/*!
+  \internal
+ */
+QGLWidget::QGLWidget(QGLWidgetPrivate &dd, const QGLFormat &format, QWidget *parent, const QGLWidget *shareWidget, Qt::WindowFlags f)
+    : QWidget(dd, parent, f | Qt::MSWindowsOwnDC)
+{
+    Q_D(QGLWidget);
+    setAttribute(Qt::WA_PaintOnScreen);
+    setAttribute(Qt::WA_NoSystemBackground);
+    setAutoFillBackground(true); // for compatibility
+    d->init(new QGLContext(format, this), shareWidget);
+
+}
+
 
 /*!
     Constructs an OpenGL widget with parent \a parent.
-- 
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