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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSGRENDERNODE_P_H
#define QSGRENDERNODE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qsgnode.h"
#include <private/qtquickglobal_p.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
class Q_QUICK_PRIVATE_EXPORT QSGRenderNode : public QSGNode
{
public:
enum StateFlag
{
DepthState = 0x01, // depth mask, depth test enable, depth func, clear depth
StencilState = 0x02, // stencil mask, stencil test enable, stencil op, stencil func, clear stencil
ScissorState = 0x04, // scissor enable, scissor test enable
ColorState = 0x08, // clear color, color mask
BlendState = 0x10, // blend enable, blend func
CullState = 0x20, // front face, cull face enable
ViewportState = 0x40 // viewport
};
Q_DECLARE_FLAGS(StateFlags, StateFlag)
struct RenderState
{
// The model-view matrix can be retrieved with matrix().
// The opacity can be retrieved with inheritedOpacity().
const QMatrix4x4 *projectionMatrix;
QRect scissorRect;
int stencilValue;
bool stencilEnabled;
bool scissorEnabled;
};
QSGRenderNode();
virtual StateFlags changedStates() = 0;
virtual void render(const RenderState &state) = 0;
const QMatrix4x4 *matrix() const { return m_matrix; }
const QSGClipNode *clipList() const { return m_clip_list; }
void setInheritedOpacity(qreal opacity);
qreal inheritedOpacity() const { return m_opacity; }
private:
friend class QSGNodeUpdater;
const QMatrix4x4 *m_matrix;
const QSGClipNode *m_clip_list;
qreal m_opacity;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QSGRenderNode::StateFlags)
QT_END_NAMESPACE
QT_END_HEADER
#endif
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