qt5base-lts/examples/opengl/hellogl_es/glwindow.h

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#ifndef GLWINDOW_H
#define GLWINDOW_H

#include <GLES/gl.h>

#include <QOpenGLContext>
#include <QWindow>
#include <QTime>

class GLWindow : public QWindow {
    Q_OBJECT
public:
    GLWindow();
    ~GLWindow();

protected slots:
    void paintGL();
    void initializeGL();

private:
    qreal   m_fAngle;
    qreal   m_fScale;
    QOpenGLContext *m_context;
    void paintQtLogo();
    void createGeometry();
    void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
    void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
    QList<qreal> vertices;
    QList<qreal> normals;
    GLfloat *createdVertices;
    GLfloat *createdNormals;
    int m_vertexNumber;
    bool qtLogo;
    int frames;
    QTime time;
};

#endif