qopengltextureblitter.h

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// Copyright (C) 2016 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 QOPENGLTEXTUREBLITTER_H

#define QOPENGLTEXTUREBLITTER_H

#include <QtOpenGL/qtopenglglobal.h>

#include <QtGui/qopengl.h>

#include <QtGui/QMatrix3x3>

#include <QtGui/QMatrix4x4>

QT_BEGIN_NAMESPACE

class QOpenGLTextureBlitterPrivate;

class Q_OPENGL_EXPORT QOpenGLTextureBlitter

public:

    QOpenGLTextureBlitter();

    ~QOpenGLTextureBlitter();

    enum Origin {

        OriginBottomLeft,

        OriginTopLeft

};

    bool create();

    bool isCreated() const;

    void destroy();

    bool supportsExternalOESTarget() const;

    bool supportsRectangleTarget() const;

    void bind(GLenum target = GL_TEXTURE_2D);

    void release();

    void setRedBlueSwizzle(bool swizzle);

    void setOpacity(float opacity);

    void blit(GLuint texture, const QMatrix4x4 &targetTransform, Origin sourceOrigin);

    void blit(GLuint texture, const QMatrix4x4 &targetTransform, const QMatrix3x3 &sourceTransform);

    static QMatrix4x4 targetTransform(const QRectF &target, const QRect &viewport);

    static QMatrix3x3 sourceTransform(const QRectF &subTexture, const QSize &textureSize, Origin origin);

private:

    Q_DISABLE_COPY(QOpenGLTextureBlitter)

    Q_DECLARE_PRIVATE(QOpenGLTextureBlitter)

    QScopedPointer<QOpenGLTextureBlitterPrivate> d_ptr;

};

QT_END_NAMESPACE

#endif //QOPENGLTEXTUREBLITTER_H