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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQuick 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
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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_NAMESPACE
namespace QSGBatchRenderer {
class Renderer;
}
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;
friend class QSGBatchRenderer::Renderer;
const QMatrix4x4 *m_matrix;
const QSGClipNode *m_clip_list;
qreal m_opacity;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QSGRenderNode::StateFlags)
QT_END_NAMESPACE
#endif
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