40a54bf565
Examples should demonstrate best practice, and we can use the keyword directly nowadays. Change-Id: I1f122e5caceca17290757ffbaf3d660e7daa9ae4 Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef GLWIDGET_H
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#define GLWIDGET_H
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#include <QOpenGLWidget>
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#include <QOpenGLFunctions>
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#include <QOpenGLShaderProgram>
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#include <QOpenGLBuffer>
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#include <QVector3D>
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#include <QMatrix4x4>
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#include <QThread>
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#include <QMutex>
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#include <QWaitCondition>
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#include <QElapsedTimer>
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class GLWidget;
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class Renderer : public QObject, protected QOpenGLFunctions
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{
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Q_OBJECT
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public:
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Renderer(GLWidget *w);
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void lockRenderer() { m_renderMutex.lock(); }
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void unlockRenderer() { m_renderMutex.unlock(); }
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QMutex *grabMutex() { return &m_grabMutex; }
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QWaitCondition *grabCond() { return &m_grabCond; }
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void prepareExit() { m_exiting = true; m_grabCond.wakeAll(); }
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signals:
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void contextWanted();
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public slots:
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void render();
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private:
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void paintQtLogo();
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void createGeometry();
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void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
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void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
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bool m_inited;
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qreal m_fAngle;
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qreal m_fScale;
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QVector<QVector3D> vertices;
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QVector<QVector3D> normals;
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QOpenGLShaderProgram program;
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QOpenGLBuffer vbo;
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int vertexAttr;
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int normalAttr;
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int matrixUniform;
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GLWidget *m_glwidget;
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QMutex m_renderMutex;
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QElapsedTimer m_elapsed;
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QMutex m_grabMutex;
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QWaitCondition m_grabCond;
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bool m_exiting;
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};
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class GLWidget : public QOpenGLWidget
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{
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Q_OBJECT
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public:
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explicit GLWidget(QWidget *parent = 0);
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~GLWidget();
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protected:
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void paintEvent(QPaintEvent *) override { }
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signals:
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void renderRequested();
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public slots:
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void grabContext();
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private slots:
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void onAboutToCompose();
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void onFrameSwapped();
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void onAboutToResize();
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void onResized();
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private:
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QThread *m_thread;
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Renderer *m_renderer;
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};
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#endif
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