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>

1 files changed, 85 insertions, 0 deletions

diff --git a/examples/quick/rendercontrol/rendercontrol_opengl/cuberenderer.h b/examples/quick/rendercontrol/rendercontrol_opengl/cuberenderer.h
new file mode 100644
index 0000000000..c7655a3c8e
--- /dev/null
+++ b/examples/quick/rendercontrol/rendercontrol_opengl/cuberenderer.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CUBERENDERER_H
+#define CUBERENDERER_H
+
+#include <QMatrix4x4>
+
+QT_FORWARD_DECLARE_CLASS(QOpenGLContext)
+QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
+QT_FORWARD_DECLARE_CLASS(QOpenGLBuffer)
+QT_FORWARD_DECLARE_CLASS(QOpenGLVertexArrayObject)
+QT_FORWARD_DECLARE_CLASS(QWindow)
+QT_FORWARD_DECLARE_CLASS(QOffscreenSurface)
+
+class CubeRenderer
+{
+public:
+    CubeRenderer(QOffscreenSurface *offscreenSurface);
+    ~CubeRenderer();
+
+    void resize(int w, int h);
+    void render(QWindow *w, QOpenGLContext *share, uint texture);
+
+private:
+    void init(QWindow *w, QOpenGLContext *share);
+    void setupVertexAttribs();
+
+    QOffscreenSurface *m_offscreenSurface;
+    QOpenGLContext *m_context;
+    QOpenGLShaderProgram *m_program;
+    QOpenGLBuffer *m_vbo;
+    QOpenGLVertexArrayObject *m_vao;
+    int m_matrixLoc;
+    QMatrix4x4 m_proj;
+};
+
+#endif