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**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
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****************************************************************************/
#ifndef QGLFRAMEBUFFEROBJECT_H
#define QGLFRAMEBUFFEROBJECT_H
#include <QtOpenGL/qgl.h>
#include <QtGui/qpaintdevice.h>
QT_BEGIN_NAMESPACE
class QGLFramebufferObjectPrivate;
class QGLFramebufferObjectFormat;
class Q_OPENGL_EXPORT QGLFramebufferObject : public QPaintDevice
{
Q_DECLARE_PRIVATE(QGLFramebufferObject)
public:
enum Attachment {
NoAttachment,
CombinedDepthStencil,
Depth
};
QGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D);
QGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D);
QGLFramebufferObject(const QSize &size, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internal_format = 0);
QGLFramebufferObject(int width, int height, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internal_format = 0);
QGLFramebufferObject(const QSize &size, const QGLFramebufferObjectFormat &format);
QGLFramebufferObject(int width, int height, const QGLFramebufferObjectFormat &format);
virtual ~QGLFramebufferObject();
QGLFramebufferObjectFormat format() const;
bool isValid() const;
bool isBound() const;
bool bind();
bool release();
GLuint texture() const;
QSize size() const;
QImage toImage() const;
Attachment attachment() const;
QPaintEngine *paintEngine() const Q_DECL_OVERRIDE;
GLuint handle() const;
static bool bindDefault();
static bool hasOpenGLFramebufferObjects();
void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
static bool hasOpenGLFramebufferBlit();
static void blitFramebuffer(QGLFramebufferObject *target, const QRect &targetRect,
QGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers = GL_COLOR_BUFFER_BIT,
GLenum filter = GL_NEAREST);
protected:
int metric(PaintDeviceMetric metric) const Q_DECL_OVERRIDE;
int devType() const Q_DECL_OVERRIDE { return QInternal::FramebufferObject; }
private:
Q_DISABLE_COPY(QGLFramebufferObject)
QScopedPointer<QGLFramebufferObjectPrivate> d_ptr;
friend class QGLPaintDevice;
friend class QGLFBOGLPaintDevice;
};
class QGLFramebufferObjectFormatPrivate;
class Q_OPENGL_EXPORT QGLFramebufferObjectFormat
{
public:
QGLFramebufferObjectFormat();
QGLFramebufferObjectFormat(const QGLFramebufferObjectFormat &other);
QGLFramebufferObjectFormat &operator=(const QGLFramebufferObjectFormat &other);
~QGLFramebufferObjectFormat();
void setSamples(int samples);
int samples() const;
void setMipmap(bool enabled);
bool mipmap() const;
void setAttachment(QGLFramebufferObject::Attachment attachment);
QGLFramebufferObject::Attachment attachment() const;
void setTextureTarget(GLenum target);
GLenum textureTarget() const;
void setInternalTextureFormat(GLenum internalTextureFormat);
GLenum internalTextureFormat() const;
bool operator==(const QGLFramebufferObjectFormat& other) const;
bool operator!=(const QGLFramebufferObjectFormat& other) const;
private:
QGLFramebufferObjectFormatPrivate *d;
void detach();
};
QT_END_NAMESPACE
#endif // QGLFRAMEBUFFEROBJECT_H
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