qt-everywhere-src-5.14.1/qtquick3d/tests/manual/render/shared/renderexample.h

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#pragma once
#ifndef RENDER_EXAMPLE_H
#define RENDER_EXAMPLE_H

#include <QtQuick3DRender/private/qssgrenderbasetypes_p.h>
#include <QtQuick3DRender/private/qssgrendercontext_p.h>

#include <QtGui/QWindow>
#include <QtCore/QElapsedTimer>
#include <QtGui/QOpenGLContext>

QT_BEGIN_NAMESPACE
class QSSGRenderContext;
QT_END_NAMESPACE

class QSSGRenderExample : public QWindow
{
    Q_OBJECT
public:
    explicit QSSGRenderExample(QWindow *parent = nullptr);
    ~QSSGRenderExample() override;
    virtual void initialize() = 0;
    virtual void drawFrame(qint64 delta) = 0;

    void setAutoUpdate(bool autoUpdate) { m_autoUpdate = autoUpdate;}

public slots:
    void renderLater();
    void renderNow();

protected:
    bool event(QEvent *event) override;
    void exposeEvent(QExposeEvent *event) override;

private:
    void preInit();
    QElapsedTimer m_frameTimer;
    bool m_autoUpdate = true;
    bool m_isIntialized = false;
    QOpenGLContext *m_context;
};

#define eps 1e-4

int eq(float a, float b);

#endif