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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QOPENGLFRAMEBUFFEROBJECT_H
#define QOPENGLFRAMEBUFFEROBJECT_H
#include <QtCore/qglobal.h>
#ifndef QT_NO_OPENGL
#include <QtGui/qopengl.h>
#include <QtGui/qpaintdevice.h>
#include <QtCore/qscopedpointer.h>
QT_BEGIN_NAMESPACE
class QOpenGLFramebufferObjectPrivate;
class QOpenGLFramebufferObjectFormat;
class Q_GUI_EXPORT QOpenGLFramebufferObject
{
Q_DECLARE_PRIVATE(QOpenGLFramebufferObject)
public:
enum Attachment {
NoAttachment,
CombinedDepthStencil,
Depth
};
explicit QOpenGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D);
QOpenGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D);
QOpenGLFramebufferObject(const QSize &size, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0);
QOpenGLFramebufferObject(int width, int height, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0);
QOpenGLFramebufferObject(const QSize &size, const QOpenGLFramebufferObjectFormat &format);
QOpenGLFramebufferObject(int width, int height, const QOpenGLFramebufferObjectFormat &format);
virtual ~QOpenGLFramebufferObject();
void addColorAttachment(const QSize &size, GLenum internalFormat = 0);
void addColorAttachment(int width, int height, GLenum internalFormat = 0);
QOpenGLFramebufferObjectFormat format() const;
bool isValid() const;
bool isBound() const;
bool bind();
bool release();
int width() const { return size().width(); }
int height() const { return size().height(); }
GLuint texture() const;
QVector<GLuint> textures() const;
GLuint takeTexture();
GLuint takeTexture(int colorAttachmentIndex);
QSize size() const;
QVector<QSize> sizes() const;
QImage toImage() const;
QImage toImage(bool flipped) const;
QImage toImage(bool flipped, int colorAttachmentIndex) const;
Attachment attachment() const;
void setAttachment(Attachment attachment);
GLuint handle() const;
static bool bindDefault();
static bool hasOpenGLFramebufferObjects();
static bool hasOpenGLFramebufferBlit();
enum FramebufferRestorePolicy {
DontRestoreFramebufferBinding,
RestoreFramebufferBindingToDefault,
RestoreFrameBufferBinding
};
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers,
GLenum filter,
int readColorAttachmentIndex,
int drawColorAttachmentIndex,
FramebufferRestorePolicy restorePolicy);
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers,
GLenum filter,
int readColorAttachmentIndex,
int drawColorAttachmentIndex);
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers = GL_COLOR_BUFFER_BIT,
GLenum filter = GL_NEAREST);
static void blitFramebuffer(QOpenGLFramebufferObject *target,
QOpenGLFramebufferObject *source,
GLbitfield buffers = GL_COLOR_BUFFER_BIT,
GLenum filter = GL_NEAREST);
private:
Q_DISABLE_COPY(QOpenGLFramebufferObject)
QScopedPointer<QOpenGLFramebufferObjectPrivate> d_ptr;
friend class QOpenGLPaintDevice;
friend class QOpenGLFBOGLPaintDevice;
};
class QOpenGLFramebufferObjectFormatPrivate;
class Q_GUI_EXPORT QOpenGLFramebufferObjectFormat
{
public:
QOpenGLFramebufferObjectFormat();
QOpenGLFramebufferObjectFormat(const QOpenGLFramebufferObjectFormat &other);
QOpenGLFramebufferObjectFormat &operator=(const QOpenGLFramebufferObjectFormat &other);
~QOpenGLFramebufferObjectFormat();
void setSamples(int samples);
int samples() const;
void setMipmap(bool enabled);
bool mipmap() const;
void setAttachment(QOpenGLFramebufferObject::Attachment attachment);
QOpenGLFramebufferObject::Attachment attachment() const;
void setTextureTarget(GLenum target);
GLenum textureTarget() const;
void setInternalTextureFormat(GLenum internalTextureFormat);
GLenum internalTextureFormat() const;
bool operator==(const QOpenGLFramebufferObjectFormat& other) const;
bool operator!=(const QOpenGLFramebufferObjectFormat& other) const;
private:
QOpenGLFramebufferObjectFormatPrivate *d;
void detach();
};
QT_END_NAMESPACE
#endif // QT_NO_OPENGL
#endif // QOPENGLFRAMEBUFFEROBJECT_H
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