611558d877
Change them to use QOpenGLWidget and QOpenGLTexture. Advocate also the usage of VBOs. Hopeless examples, that rely on the fixed pipeline and will not compile or work in ES and dynamic builds, are moved to a "legacy" directory. The documentation pages for these are removed. This long due change avoids the confusion newcomers experience when trying to get started with Qt 5 and OpenGL. hellowindow's behavior is changed to open a single window only by default. The old default behavior, that opened three windows on platforms that supported both MultipleWindows & ThreadedOpenGL, can be requested by passing --multiple. --single is removed since it is the default now. This plays much nicer with drivers that have issues with threading. In addition, say hello to hellogl2. This is the old hellogl example updated to use QOpenGLWidget and OpenGL 2. It also has a mainwindow with multiple (un)dockable widgets containing the OpenGL widgets. This helps testing the behavior when the top-level of the QOpenGLWidget changes and provides a very important example of how to do proper resource management in this case. (must use aboutToBeDestroyed() of the context, since the context goes away and is replaced by a new one on every dock/undock) As a bonus, the logo is now real 3D, no more orthographic nonsense. Launch with --multisample to request 4x MSAA. Launch with --coreprofile to request 3.2 Core. In this particular example the shaders are present in both versions and there is a VAO so the application is functional with core profile contexts. Change-Id: Id780a80cb0708ef164cc172450ed74050f065596 Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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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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** You may use this file under the terms of the BSD license 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 Digia Plc and its Subsidiary(-ies) nor the names
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** of its 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 <QOpenGLBuffer>
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#include <QVector3D>
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#include <QMatrix4x4>
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#include <QTime>
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#include <QVector>
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#include <QPushButton>
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class Bubble;
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class MainWindow;
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QT_FORWARD_DECLARE_CLASS(QOpenGLTexture)
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QT_FORWARD_DECLARE_CLASS(QOpenGLShader)
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QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
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class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
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{
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Q_OBJECT
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public:
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GLWidget(MainWindow *mw, bool button, const QColor &background);
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~GLWidget();
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public slots:
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void setScaling(int scale);
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void setLogo();
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void setTexture();
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void setShowBubbles(bool);
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void setTransparent(bool transparent);
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private slots:
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void handleButtonPress();
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protected:
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void resizeGL(int w, int h) Q_DECL_OVERRIDE;
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void paintGL() Q_DECL_OVERRIDE;
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void initializeGL() Q_DECL_OVERRIDE;
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private:
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void paintTexturedCube();
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void paintQtLogo();
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void createGeometry();
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void createBubbles(int number);
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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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MainWindow *m_mainWindow;
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qreal m_fAngle;
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qreal m_fScale;
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bool m_showBubbles;
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QVector<QVector3D> m_vertices;
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QVector<QVector3D> m_normals;
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bool m_qtLogo;
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QList<Bubble *> m_bubbles;
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int m_frames;
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QTime m_time;
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QOpenGLShader *m_vshader1;
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QOpenGLShader *m_fshader1;
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QOpenGLShader *m_vshader2;
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QOpenGLShader *m_fshader2;
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QOpenGLShaderProgram *m_program1;
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QOpenGLShaderProgram *m_program2;
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QOpenGLTexture *m_texture;
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QOpenGLBuffer m_vbo1;
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QOpenGLBuffer m_vbo2;
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int m_vertexAttr1;
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int m_normalAttr1;
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int m_matrixUniform1;
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int m_vertexAttr2;
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int m_normalAttr2;
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int m_texCoordAttr2;
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int m_matrixUniform2;
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int m_textureUniform2;
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bool m_transparent;
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QPushButton *m_btn;
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bool m_hasButton;
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QColor m_background;
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};
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#endif
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