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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative 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 QQUICKSHADEREFFECTNODE_P_H
#define QQUICKSHADEREFFECTNODE_P_H
#include "qsgnode.h"
#include "qsgmaterial.h"
#include <private/qsgtextureprovider_p.h>
#include <qquickitem.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qpointer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
struct QQuickShaderEffectMaterialKey {
QByteArray vertexCode;
QByteArray fragmentCode;
const char *className;
bool operator == (const QQuickShaderEffectMaterialKey &other) const;
};
uint qHash(const QQuickShaderEffectMaterialKey &key);
// TODO: Implement support for multisampling.
struct QQuickShaderEffectProgram : public QQuickShaderEffectMaterialKey
{
QQuickShaderEffectProgram() : respectsOpacity(false), respectsMatrix(false) {}
QVector<QByteArray> attributeNames;
QSet<QByteArray> uniformNames;
uint respectsOpacity : 1;
uint respectsMatrix : 1;
};
class QQuickCustomMaterialShader;
class QQuickShaderEffectMaterial : public QSGMaterial
{
public:
enum CullMode
{
NoCulling,
BackFaceCulling,
FrontFaceCulling
};
QQuickShaderEffectMaterial();
virtual QSGMaterialType *type() const;
virtual QSGMaterialShader *createShader() const;
virtual int compare(const QSGMaterial *other) const;
void setCullMode(CullMode face);
CullMode cullMode() const;
void setProgramSource(const QQuickShaderEffectProgram &);
void setUniforms(const QVector<QPair<QByteArray, QVariant> > &uniformValues);
void setTextureProviders(const QVector<QPair<QByteArray, QSGTextureProvider *> > &textures);
const QVector<QPair<QByteArray, QSGTextureProvider *> > &textureProviders() const;
void updateTextures() const;
protected:
friend class QQuickCustomMaterialShader;
// The type pointer needs to be unique. It is not safe to let the type object be part of the
// QQuickShaderEffectMaterial, since it can be deleted and a new one constructed on top of the old
// one. The new QQuickShaderEffectMaterial would then get the same type pointer as the old one, and
// CustomMaterialShaders based on the old one would incorrectly be used together with the new
// one. To guarantee that the type pointer is unique, the type object must live as long as
// there are any CustomMaterialShaders of that type.
QSharedPointer<QSGMaterialType> m_type;
QQuickShaderEffectProgram m_source;
QVector<QPair<QByteArray, QVariant> > m_uniformValues;
QVector<QPair<QByteArray, QSGTextureProvider *> > m_textures;
CullMode m_cullMode;
static QHash<QQuickShaderEffectMaterialKey, QSharedPointer<QSGMaterialType> > materialMap;
};
class QSGShaderEffectMesh;
class QQuickShaderEffectNode : public QObject, public QSGGeometryNode
{
Q_OBJECT
public:
QQuickShaderEffectNode();
virtual ~QQuickShaderEffectNode();
virtual void preprocess();
QQuickShaderEffectMaterial *shaderMaterial() { return &m_material; }
private Q_SLOTS:
void markDirtyTexture();
private:
QQuickShaderEffectMaterial m_material;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QQUICKSHADEREFFECTNODE_P_H
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