Introduce state storing for mac and android.

At least some mac and android environments do not handle
shared contexts properly, leading to slowdowns and/or artifacts.
Disable context sharing on mac and android, and instead
store and restore relevant opengl state.

Also improve renderer and context cleanup

Change-Id: I8fa596b95f6ff20d53c950a34b5c28513acbc18f
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/datavisualizationqml2/enumtostringmap_p.h b/src/datavisualizationqml2/enumtostringmap_p.h
new file mode 100644
index 00000000..2206f153
--- /dev/null
+++ b/src/datavisualizationqml2/enumtostringmap_p.h
@@ -0,0 +1,49 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVisualization API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef ENUMTOSTRINGMAP_P_H
+#define ENUMTOSTRINGMAP_P_H
+
+#include <QtGui/qopengl.h>
+#include <QMap>
+#include <QString>
+
+class EnumToStringMap
+{
+public:
+    static EnumToStringMap *newInstance();
+    static void deleteInstance();
+    QString lookUp(const GLuint value) const;
+
+private:
+    EnumToStringMap();
+    QMap<int, QString> m_map;
+    QString m_unknown;
+};
+
+#endif