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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