qopenglcompositorbackingstore_p.h

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// Copyright (C) 2020 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QOPENGLCOMPOSITORBACKINGSTORE_H

#define QOPENGLCOMPOSITORBACKINGSTORE_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtOpenGL/qtopenglglobal.h>

#include <qpa/qplatformbackingstore.h>

#include <QImage>

#include <QRegion>

#include <private/qglobal_p.h>

QT_BEGIN_NAMESPACE

class QOpenGLContext;

class QPlatformTextureList;

class QRhiTexture;

class Q_OPENGL_EXPORT QOpenGLCompositorBackingStore : public QPlatformBackingStore

public:

    QOpenGLCompositorBackingStore(QWindow *window);

    ~QOpenGLCompositorBackingStore();

    QPaintDevice *paintDevice() override;

    void beginPaint(const QRegion &region) override;

    void flush(QWindow *window, const QRegion &region, const QPoint &offset) override;

    void resize(const QSize &size, const QRegion &staticContents) override;

    QImage toImage() const override;

    FlushResult rhiFlush(QWindow *window,

                         qreal sourceDevicePixelRatio,

                         const QRegion &region,

                         const QPoint &offset,

                         QPlatformTextureList *textures,

                         bool translucentBackground,

                         qreal sourceTransformFactor = 0) override;

    const QPlatformTextureList *textures() const { return m_textures; }

    void notifyComposited();

private:

    void updateTexture();

    QWindow *m_window;

    QImage m_image;

    QRegion m_dirty;

    uint m_bsTexture;

    QRhiTexture *m_bsTextureWrapper;

    QOpenGLContext *m_bsTextureContext;

    QPlatformTextureList *m_textures;

    QPlatformTextureList *m_lockedWidgetTextures;

    QRhi *m_rhi;

};

QT_END_NAMESPACE

#endif // QOPENGLCOMPOSITORBACKINGSTORE_H