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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 QQUICKGENERICSHADEREFFECT_P_H
+#define QQUICKGENERICSHADEREFFECT_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 <private/qtquickglobal_p.h>
+#include <private/qsgadaptationlayer_p.h>
+#include "qquickshadereffect_p.h"
+#include "qquickshadereffectmesh_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QSignalMapper;
+
+class Q_QUICK_PRIVATE_EXPORT QQuickGenericShaderEffect : public QObject
+{
+    Q_OBJECT
+
+public:
+    QQuickGenericShaderEffect(QQuickShaderEffect *item, QObject *parent = 0);
+    ~QQuickGenericShaderEffect();
+
+    QByteArray fragmentShader() const { return m_fragShader; }
+    void setFragmentShader(const QByteArray &src);
+
+    QByteArray vertexShader() const { return m_vertShader; }
+    void setVertexShader(const QByteArray &src);
+
+    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;
+    QQuickShaderEffect::Status status() const;
+
+    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 handleComponentComplete();
+    void handleItemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value);
+    void maybeUpdateShaders();
+
+private slots:
+    void propertyChanged(int mappedId);
+    void sourceDestroyed(QObject *object);
+    void markGeometryDirtyAndUpdate();
+    void markGeometryDirtyAndUpdateIfSupportsAtlas();
+    void shaderCodePrepared(bool ok, QSGGuiThreadShaderEffectManager::ShaderInfo::Type typeHint,
+                            const QByteArray &src, QSGGuiThreadShaderEffectManager::ShaderInfo *result);
+
+private:
+    QSGGuiThreadShaderEffectManager *shaderEffectManager() const;
+
+    enum Shader {
+        Vertex,
+        Fragment,
+
+        NShader
+    };
+    bool updateShader(Shader shaderType, const QByteArray &src);
+    void updateShaderVars(Shader shaderType);
+    void disconnectSignals(Shader shaderType);
+    bool sourceIsUnique(QQuickItem *source, Shader typeToSkip, int indexToSkip) const;
+
+    QQuickShaderEffect *m_item;
+    QSize m_meshResolution;
+    QQuickShaderEffectMesh *m_mesh;
+    QQuickGridMesh m_defaultMesh;
+    QQuickShaderEffect::CullMode m_cullMode;
+    bool m_blending;
+    bool m_supportsAtlasTextures;
+    mutable QSGGuiThreadShaderEffectManager *m_mgr;
+    QByteArray m_fragShader;
+    bool m_fragNeedsUpdate;
+    QByteArray m_vertShader;
+    bool m_vertNeedsUpdate;
+
+    QSGShaderEffectNode::ShaderData m_shaders[NShader];
+    QSGShaderEffectNode::DirtyShaderFlags m_dirty;
+    QSet<int> m_dirtyConstants[NShader];
+    QSet<int> m_dirtyTextures[NShader];
+    QSGGuiThreadShaderEffectManager::ShaderInfo *m_inProgress[NShader];
+
+    struct SignalMapper {
+        SignalMapper() : mapper(nullptr), active(false) { }
+        QSignalMapper *mapper;
+        bool active;
+    };
+    QVector<SignalMapper> m_signalMappers[NShader];
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKGENERICSHADEREFFECT_P_H