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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGLFRAMEBUFFEROBJECT_P_H
#define QGLFRAMEBUFFEROBJECT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of the QLibrary class. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
QT_BEGIN_NAMESPACE
QT_BEGIN_INCLUDE_NAMESPACE
#include <qglframebufferobject.h>
#include <private/qglpaintdevice_p.h>
#include <private/qgl_p.h>
QT_END_INCLUDE_NAMESPACE
#ifndef QT_OPENGL_ES
#define DEFAULT_FORMAT GL_RGBA8
#else
#define DEFAULT_FORMAT GL_RGBA
#endif
class QGLFramebufferObjectFormatPrivate
{
public:
QGLFramebufferObjectFormatPrivate()
: ref(1),
samples(0),
attachment(QGLFramebufferObject::NoAttachment),
target(GL_TEXTURE_2D),
internal_format(DEFAULT_FORMAT)
{
}
QGLFramebufferObjectFormatPrivate
(const QGLFramebufferObjectFormatPrivate *other)
: ref(1),
samples(other->samples),
attachment(other->attachment),
target(other->target),
internal_format(other->internal_format)
{
}
bool equals(const QGLFramebufferObjectFormatPrivate *other)
{
return samples == other->samples &&
attachment == other->attachment &&
target == other->target &&
internal_format == other->internal_format;
}
QAtomicInt ref;
int samples;
QGLFramebufferObject::Attachment attachment;
GLenum target;
GLenum internal_format;
};
class QGLFBOGLPaintDevice : public QGLPaintDevice
{
public:
virtual QPaintEngine* paintEngine() const {return fbo->paintEngine();}
virtual QSize size() const {return fbo->size();}
virtual QGLContext* context() const {return const_cast<QGLContext *>(QGLContext::currentContext());}
virtual QGLFormat format() const {return fboFormat;}
virtual void ensureActiveTarget();
virtual void beginPaint();
virtual void endPaint();
void setFBO(QGLFramebufferObject* f,
QGLFramebufferObject::Attachment attachment);
private:
bool wasBound;
QGLFramebufferObject* fbo;
QGLFormat fboFormat;
};
class QGLFramebufferObjectPrivate
{
public:
QGLFramebufferObjectPrivate() : fbo_guard(0), texture(0), depth_stencil_buffer(0), color_buffer(0), valid(false), previous_fbo(0), engine(0) {}
~QGLFramebufferObjectPrivate() {}
void init(QGLFramebufferObject *q, const QSize& sz,
QGLFramebufferObject::Attachment attachment,
GLenum internal_format, GLenum texture_target, GLint samples = 0);
bool checkFramebufferStatus() const;
QGLSharedResourceGuard fbo_guard;
GLuint texture;
GLuint depth_stencil_buffer;
GLuint color_buffer;
GLenum target;
QSize size;
QGLFramebufferObjectFormat format;
uint valid : 1;
QGLFramebufferObject::Attachment fbo_attachment;
GLuint previous_fbo;
mutable QPaintEngine *engine;
QGLFBOGLPaintDevice glDevice;
inline GLuint fbo() const { return fbo_guard.id(); }
};
QT_END_NAMESPACE
#endif // QGLFRAMEBUFFEROBJECT_P_H
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