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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
#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
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