Move legacy rendercontrol example into a subdirectory

...called rendercontrol_opengl under examples/quick/rendercontrol. This
example is going to be migrated to support operating with RHI-on-OpenGL
later on.

Additionally, we can this way introduce more rendercontrol examples in
the future, for example to show how to do things with Vulkan, Metal,
D3D.

Task-number: QTBUG-78595
Change-Id: I7f5243b1f86e62949400107bf12bfa07b17b1031
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

2 files changed, 33 insertions, 0 deletions

diff --git a/examples/quick/rendercontrol/rendercontrol_opengl/doc/images/rendercontrol-example.jpg b/examples/quick/rendercontrol/rendercontrol_opengl/doc/images/rendercontrol-example.jpg
new file mode 100644
index 0000000000..a899ebe7f5
--- /dev/null
+++ b/examples/quick/rendercontrol/rendercontrol_opengl/doc/images/rendercontrol-example.jpg
diff --git a/examples/quick/rendercontrol/rendercontrol_opengl/doc/src/rendercontrol.qdoc b/examples/quick/rendercontrol/rendercontrol_opengl/doc/src/rendercontrol.qdoc
new file mode 100644
index 0000000000..9b6b075a5b
--- /dev/null
+++ b/examples/quick/rendercontrol/rendercontrol_opengl/doc/src/rendercontrol.qdoc
@@ -0,0 +1,33 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \title QQuickRenderControl Example
+    \example rendercontrol/rendercontrol_opengl
+    \brief Shows how to render a Qt Quick scene into a texture that is then used by a non-Quick based OpenGL renderer.
+    \image rendercontrol-example.jpg
+*/