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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt3D 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 QGLCOLLADAFXEFFECTFACTORY_H
#define QGLCOLLADAFXEFFECTFACTORY_H
#include <QVector>
#include <QXmlStreamReader>
#include <QDir>
#include "qgl.h"
#include "qgltexture2d.h"
#include "qglcolladafxeffect.h"
Q_DECLARE_METATYPE(QArray<float>)
QT_BEGIN_NAMESPACE
class QGLColladaFxEffect;
class QGLColladaImageParam;
class QGLColladaSurfaceParam;
class QGLColladaSampler2DParam;
typedef struct _ResultState
{
QMap<QString, QVariant> paramSids;
QMap<QString, QVariant> paramIds;
QMap<QString, QVariant> paramNames;
QDir sourceDir;
QMap<QGLTexture2D*, QString> unresolvedTexture2Ds;
} ResultState;
class Q_QT3D_EXPORT QGLColladaFxEffectFactory
{
public:
// Collada parsing functions
static QList<QGLColladaFxEffect*> loadEffectsFromFile(const QString& fileName );
protected:
static QList<QGLColladaFxEffect*> loadEffectsFromXml( QXmlStreamReader& xml, QDir homeDirectory = QDir());
static void processLibraryImagesElement( QXmlStreamReader& xml, ResultState* stateStack );
static QList<QGLColladaFxEffect*> processLibraryEffectsElement( QXmlStreamReader& xml, ResultState* stateStack );
static QList<QGLColladaFxEffect*> processEffectElement( QXmlStreamReader& xml, ResultState* stateStack );
static QList<QGLColladaFxEffect*> processProfileElement( QXmlStreamReader& xml, ResultState* stateStack );
static QGLColladaParam* processPassElement( QXmlStreamReader& xml, ResultState* stateStack, QGLColladaFxEffect* effect );
static QGLColladaFxEffect* processTechniqueElement( QXmlStreamReader& xml, ResultState* stateStack, QString &profileName );
static QGLColladaParam* processNewparamElement( QXmlStreamReader& xml, ResultState* stateStack );
static void processImageElement( QXmlStreamReader& xml, ResultState* stateStack );
static QGLColladaSurfaceParam* processSurfaceElement( QXmlStreamReader& xml, ResultState* stateStack, QString passedInSid = "");
static void processSampler2DElement( QXmlStreamReader& xml, ResultState* stateStack, QString passedInSid );
static QGLTexture2D* processTextureElement( QXmlStreamReader& xml , ResultState* stateStack );
static QVariant processFloatList( QXmlStreamReader& xml );
static QColor processColorElement( QXmlStreamReader& xml );
static float processParamOrFloatElement( QXmlStreamReader& xml );
static QVariant processColorOrTextureElement( QXmlStreamReader& xml );
QGLColladaFxEffectFactory();
static void processProgramElement( QXmlStreamReader& xml, ResultState* stateStack, QGLColladaFxEffect* effect );
// Collada generation functions
public:
static QString exportEffect(QGLColladaFxEffect *effect, QString effectId, QString techniqueSid);
protected:
static QStringList glslProfileFromEffect(QGLColladaFxEffect* effect, QString techniqueSid);
static QStringList generateProgramElement(QGLColladaFxEffect* effect, QString techniqueSid);
static QStringList generateShaderElement( QGLColladaFxEffect* effect, QString vertexShaderRefSid, QString fragmentShaderRefSid );
static QStringList generateBindUniformElement( QGLColladaFxEffect* effect );
static QStringList generateBindAttributeElement( QGLColladaFxEffect* effect );
static QStringList generateBindUniformElements( QGLColladaFxEffect* effect );
static QStringList generateCodeElements( QGLColladaFxEffect* effect, QString baseSid );
static QImage resolveImageURI(ResultState *resultState, QString imageFileName);
static bool resolveTexture2DImage(QGLTexture2D *result, ResultState *resultState, QString paramName);
};
class QGLColladaParam
{
friend class QGLColladaFxEffectFactory;
public:
enum {
UnknownType = 0,
Sampler2DType,
Texture2DType,
SurfaceType,
ImageType,
UserDefinedType = 100
};
virtual ~QGLColladaParam();
int type();
QVector<float> value();
QString sid();
QString id();
static QString typeString(int);
protected:
QGLColladaParam(QString sid, int type);
QString mSid;
QString mId;
int mType;
QVector<float> mValue;
};
class QGLColladaTextureParam : public QGLColladaParam
{
friend class QGLColladaFxEffectFactory;
public:
QGLColladaTextureParam(QString sid, QGLTexture2D* texture);
QGLTexture2D* texture();
QString samplerSid();
protected:
QGLTexture2D* mTexture;
QString sampler2DSid;
QString texCoordSid;
};
class QGLColladaSurfaceParam : public QGLColladaParam
{
friend class QGLColladaFxEffectFactory;
public:
QGLColladaSurfaceParam(QString sid);
protected:
QString mInitFrom;
QString mFormat;
QString mFormatHint;
QString mSize;
QVector<int> mSizeVector;
QPointF mViewportRatio;
int mMipLevels;
bool mMipMapGenerate;
QString mExtra;
QString mGenerator;
};
class QGLColladaSampler2DParam : public QGLColladaParam
{
friend class QGLColladaFxEffectFactory;
public:
QGLColladaSampler2DParam(QString sid, QGLTexture2D* sampler);
QGLColladaSampler2DParam(QString sid, QString sourceSid);
QGLTexture2D sampler();
QString sourceSid();
protected:
QGLTexture2D* mTexture;
QString mSourceSid;
};
// "image" isn't really a param, but it shares enough that it seems sensible
// to re-use the QGLColladaParam base.
class QGLColladaImageParam : public QGLColladaParam
{
friend class QGLColladaFxEffectFactory;
public:
QGLColladaImageParam(QString sid, QImage image);
QImage image();
QString name();
protected:
QImage mImage;
QString mName;
};
QT_END_NAMESPACE
#endif // QGLCOLLADAFXEFFECTFACTORY_H
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