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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtOpenGL 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 QOPENGL_CUSTOM_SHADER_STAGE_H
+#define QOPENGL_CUSTOM_SHADER_STAGE_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 <QtOpenGL/qtopenglglobal.h>
+#include <QOpenGLShaderProgram>
+
+QT_BEGIN_NAMESPACE
+
+
+class QPainter;
+class QOpenGLCustomShaderStagePrivate;
+class Q_OPENGL_EXPORT QOpenGLCustomShaderStage
+{
+    Q_DECLARE_PRIVATE(QOpenGLCustomShaderStage)
+public:
+    QOpenGLCustomShaderStage();
+    virtual ~QOpenGLCustomShaderStage();
+    virtual void setUniforms(QOpenGLShaderProgram*) {}
+
+    void setUniformsDirty();
+
+    bool setOnPainter(QPainter*);
+    void removeFromPainter(QPainter*);
+    QByteArray source() const;
+
+    void setInactive();
+protected:
+    void setSource(const QByteArray&);
+
+private:
+    QOpenGLCustomShaderStagePrivate* d_ptr;
+
+    Q_DISABLE_COPY_MOVE(QOpenGLCustomShaderStage)
+};
+
+
+QT_END_NAMESPACE
+
+
+#endif