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******************************************************************************/

#ifndef QPLATFORMBACKINGSTOREOPENGLSUPPORT_H
#define QPLATFORMBACKINGSTOREOPENGLSUPPORT_H

//
//  W A R N I N G
//  -------------
//
// This file is part of the QPA API and is not meant to be used
// in applications. Usage of this API may make your code
// source and binary incompatible with future versions of Qt.
//

#ifndef QT_NO_OPENGL

#include <QtOpenGL/qtopenglglobal.h>
#include <qpa/qplatformbackingstore.h>

#include <QtGui/QOpenGLContext>

QT_BEGIN_NAMESPACE

class QOpenGLTextureBlitter;
class QOpenGLBackingStore;

class Q_OPENGL_EXPORT QPlatformBackingStoreOpenGLSupport : public QPlatformBackingStoreOpenGLSupportBase
{
public:
    ~QPlatformBackingStoreOpenGLSupport() override;
    void composeAndFlush(QWindow *window, const QRegion &region, const QPoint &offset,
                         QPlatformTextureList *textures, bool translucentBackground) override;
    GLuint toTexture(const QRegion &dirtyRegion, QSize *textureSize, QPlatformBackingStore::TextureFlags *flags) const override;

private:
    QScopedPointer<QOpenGLContext> context;
    mutable GLuint textureId = 0;
    mutable QSize textureSize;
    mutable bool needsSwizzle = false;
    mutable bool premultiplied = false;
    QOpenGLTextureBlitter *blitter = nullptr;
};

Q_OPENGL_EXPORT void qt_registerDefaultPlatformBackingStoreOpenGLSupport();

QT_END_NAMESPACE

#endif // QT_NO_OPENGL

#endif // QPLATFORMBACKINGSTOREOPENGLSUPPORT_H