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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKOPENGLSHADEREFFECT_P_H
+#define QQUICKOPENGLSHADEREFFECT_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 <QtQuick/qquickitem.h>
+
+#include <QtQuick/qsgmaterial.h>
+#include <private/qtquickglobal_p.h>
+#include <private/qsgadaptationlayer_p.h>
+#include <private/qquickopenglshadereffectnode_p.h>
+#include "qquickshadereffect_p.h"
+#include "qquickshadereffectmesh_p.h"
+
+#include <QtCore/qpointer.h>
+#include <functional>
+
+QT_BEGIN_NAMESPACE
+
+class QSGContext;
+class QSignalMapper;
+class QFileSelector;
+class QQuickOpenGLCustomMaterialShader;
+
+namespace QtPrivate {
+class MappedSlotObject;
+}
+
+// Common class for QQuickOpenGLShaderEffect and QQuickCustomParticle.
+struct Q_QUICK_PRIVATE_EXPORT QQuickOpenGLShaderEffectCommon
+{
+    typedef QQuickOpenGLShaderEffectMaterialKey Key;
+    typedef QQuickOpenGLShaderEffectMaterial::UniformData UniformData;
+
+    QQuickOpenGLShaderEffectCommon(QObject *host, std::function<void(int)> mappedPropertyChanged)
+        : host(host), mappedPropertyChanged(mappedPropertyChanged), fileSelector(nullptr)
+    { }
+
+    ~QQuickOpenGLShaderEffectCommon();
+
+    void disconnectPropertySignals(QQuickItem *item, Key::ShaderType shaderType);
+    void connectPropertySignals(QQuickItem *item, const QMetaObject *itemMetaObject, Key::ShaderType shaderType);
+    void updateParseLog(bool ignoreAttributes);
+    void lookThroughShaderCode(QQuickItem *item, const QMetaObject *itemMetaObject, Key::ShaderType shaderType, const QByteArray &code);
+    void updateShader(QQuickItem *item, const QMetaObject *itemMetaObject, Key::ShaderType shaderType);
+    void updateMaterial(QQuickOpenGLShaderEffectNode *node, QQuickOpenGLShaderEffectMaterial *material,
+                        bool updateUniforms, bool updateUniformValues, bool updateTextureProviders);
+    void updateWindow(QQuickWindow *window);
+
+    // Called by slots in QQuickOpenGLShaderEffect:
+    void sourceDestroyed(QObject *object);
+    void propertyChanged(QQuickItem *item, const QMetaObject *itemMetaObject, int mappedId, bool *textureProviderChanged);
+
+    void clearSignalMappers(int shader);
+
+    QObject *host;
+    std::function<void(int)> mappedPropertyChanged;
+    Key source;
+    QVector<QByteArray> attributes;
+    QVector<UniformData> uniformData[Key::ShaderTypeCount];
+    QVector<QtPrivate::MappedSlotObject *> signalMappers[Key::ShaderTypeCount];
+    QString parseLog;
+    QFileSelector *fileSelector;
+};
+
+
+class Q_QUICK_PRIVATE_EXPORT QQuickOpenGLShaderEffect : public QObject
+{
+    Q_OBJECT
+
+public:
+    QQuickOpenGLShaderEffect(QQuickShaderEffect *item, QObject *parent = 0);
+    ~QQuickOpenGLShaderEffect();
+
+    QByteArray fragmentShader() const { return m_common.source.sourceCode[Key::FragmentShader]; }
+    void setFragmentShader(const QByteArray &code);
+
+    QByteArray vertexShader() const { return m_common.source.sourceCode[Key::VertexShader]; }
+    void setVertexShader(const QByteArray &code);
+
+    bool blending() const { return m_blending; }
+    void setBlending(bool enable);
+
+    QVariant mesh() const;
+    void setMesh(const QVariant &mesh);
+
+    QQuickShaderEffect::CullMode cullMode() const { return m_cullMode; }
+    void setCullMode(QQuickShaderEffect::CullMode face);
+
+    QString log() const { return m_log; }
+    QQuickShaderEffect::Status status() const { return m_status; }
+
+    bool supportsAtlasTextures() const { return m_supportsAtlasTextures; }
+    void setSupportsAtlasTextures(bool supports);
+
+    QString parseLog();
+
+    void handleEvent(QEvent *);
+    void handleGeometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
+    QSGNode *handleUpdatePaintNode(QSGNode *, QQuickItem::UpdatePaintNodeData *);
+    void handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value);
+    void maybeUpdateShaders(bool force = false);
+
+private Q_SLOTS:
+    void updateGeometry();
+    void updateGeometryIfAtlased();
+    void updateLogAndStatus(const QString &log, int status);
+    void sourceDestroyed(QObject *object);
+
+private:
+    void propertyChanged(int mappedId);
+
+    friend class QQuickCustomMaterialShader;
+    friend class QQuickOpenGLShaderEffectNode;
+
+    typedef QQuickOpenGLShaderEffectMaterialKey Key;
+    typedef QQuickOpenGLShaderEffectMaterial::UniformData UniformData;
+
+    QQuickShaderEffect *m_item;
+    const QMetaObject *m_itemMetaObject;
+    QSize m_meshResolution;
+    QQuickShaderEffectMesh *m_mesh;
+    QQuickGridMesh m_defaultMesh;
+    QQuickShaderEffect::CullMode m_cullMode;
+    QString m_log;
+    QQuickShaderEffect::Status m_status;
+
+    QQuickOpenGLShaderEffectCommon m_common;
+
+    uint m_blending : 1;
+    uint m_dirtyUniforms : 1;
+    uint m_dirtyUniformValues : 1;
+    uint m_dirtyTextureProviders : 1;
+    uint m_dirtyProgram : 1;
+    uint m_dirtyParseLog : 1;
+    uint m_dirtyMesh : 1;
+    uint m_dirtyGeometry : 1;
+    uint m_customVertexShader : 1;
+    uint m_supportsAtlasTextures : 1;
+    uint m_vertNeedsUpdate : 1;
+    uint m_fragNeedsUpdate : 1;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKOPENGLSHADEREFFECT_P_H