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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 QQUICKSHADEREFFECTNODE_P_H
#define QQUICKSHADEREFFECTNODE_P_H
#include <QtQuick/qsgnode.h>
#include <QtQuick/qsgmaterial.h>
#include <QtQuick/qsgtextureprovider.h>
#include <QtQuick/qquickitem.h>
#include <private/qtquickglobal_p.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qpointer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
struct QQuickShaderEffectMaterialKey {
enum ShaderType
{
VertexShader,
FragmentShader,
ShaderTypeCount
};
QByteArray sourceCode[ShaderTypeCount];
const char *className;
bool operator == (const QQuickShaderEffectMaterialKey &other) const;
};
uint qHash(const QQuickShaderEffectMaterialKey &key);
class QQuickCustomMaterialShader;
class QQuickShaderEffectNode;
class Q_QUICK_PRIVATE_EXPORT QQuickShaderEffectMaterial : public QSGMaterial
{
public:
struct UniformData
{
enum SpecialType { None, Sampler, Opacity, Matrix };
QByteArray name;
QVariant value;
SpecialType specialType;
};
enum CullMode
{
NoCulling,
BackFaceCulling,
FrontFaceCulling
};
explicit QQuickShaderEffectMaterial(QQuickShaderEffectNode *node = 0);
virtual QSGMaterialType *type() const;
virtual QSGMaterialShader *createShader() const;
virtual int compare(const QSGMaterial *other) const;
QVector<QByteArray> attributes;
QVector<UniformData> uniforms[QQuickShaderEffectMaterialKey::ShaderTypeCount];
QVector<QPair<QByteArray, QSGTextureProvider *> > textureProviders;
CullMode cullMode;
void setProgramSource(const QQuickShaderEffectMaterialKey &source);
void updateTextures() const;
void invalidateTextureProvider(QSGTextureProvider *provider);
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;
QQuickShaderEffectMaterialKey m_source;
QQuickShaderEffectNode *m_node;
bool m_emittedLogChanged;
static QHash<QQuickShaderEffectMaterialKey, QSharedPointer<QSGMaterialType> > materialMap;
};
class QSGShaderEffectMesh;
class Q_QUICK_PRIVATE_EXPORT QQuickShaderEffectNode : public QObject, public QSGGeometryNode
{
Q_OBJECT
public:
QQuickShaderEffectNode();
virtual ~QQuickShaderEffectNode();
virtual void preprocess();
Q_SIGNALS:
void logAndStatusChanged(const QString &, int status);
private Q_SLOTS:
void markDirtyTexture();
void textureProviderDestroyed(QObject *object);
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QQUICKSHADEREFFECTNODE_P_H
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