Move QOpenGLVertexArrayObject from QtGui to QtOpenGL

Task-number: QTBUG-74409
Change-Id: I6442693ca2b28b3a66f0f4fb41843e1e404df32b
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 121 insertions, 0 deletions

diff --git a/src/opengl/qopenglvertexarrayobject_p.h b/src/opengl/qopenglvertexarrayobject_p.h
new file mode 100644
index 0000000000..0d0fca4d81
--- /dev/null
+++ b/src/opengl/qopenglvertexarrayobject_p.h
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com>
+** 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 QOPENGLVERTEXARRAYOBJECT_P_H
+#define QOPENGLVERTEXARRAYOBJECT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the Qt OpenGL classes.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtOpenGL/qtopenglglobal.h>
+
+#include <QtGui/qopengl.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLVertexArrayObjectHelper;
+class QOpenGLContext;
+
+void Q_OPENGL_EXPORT qtInitializeVertexArrayObjectHelper(QOpenGLVertexArrayObjectHelper *helper, QOpenGLContext *context);
+
+class QOpenGLVertexArrayObjectHelper
+{
+    Q_DISABLE_COPY(QOpenGLVertexArrayObjectHelper)
+
+public:
+    explicit inline QOpenGLVertexArrayObjectHelper(QOpenGLContext *context)
+        : GenVertexArrays(nullptr)
+        , DeleteVertexArrays(nullptr)
+        , BindVertexArray(nullptr)
+        , IsVertexArray(nullptr)
+    {
+        qtInitializeVertexArrayObjectHelper(this, context);
+    }
+
+    inline bool isValid() const
+    {
+        return GenVertexArrays && DeleteVertexArrays && BindVertexArray && IsVertexArray;
+    }
+
+    inline void glGenVertexArrays(GLsizei n, GLuint *arrays) const
+    {
+        GenVertexArrays(n, arrays);
+    }
+
+    inline void glDeleteVertexArrays(GLsizei n, const GLuint *arrays) const
+    {
+        DeleteVertexArrays(n, arrays);
+    }
+
+    inline void glBindVertexArray(GLuint array) const
+    {
+        BindVertexArray(array);
+    }
+
+    inline GLboolean glIsVertexArray(GLuint array) const
+    {
+        return IsVertexArray(array);
+    }
+
+private:
+    friend void Q_OPENGL_EXPORT qtInitializeVertexArrayObjectHelper(QOpenGLVertexArrayObjectHelper *helper, QOpenGLContext *context);
+
+    // Function signatures are equivalent between desktop core, ARB, APPLE, ES 3 and ES 2 extensions
+    typedef void (QOPENGLF_APIENTRYP qt_GenVertexArrays_t)(GLsizei n, GLuint *arrays);
+    typedef void (QOPENGLF_APIENTRYP qt_DeleteVertexArrays_t)(GLsizei n, const GLuint *arrays);
+    typedef void (QOPENGLF_APIENTRYP qt_BindVertexArray_t)(GLuint array);
+    typedef GLboolean (QOPENGLF_APIENTRYP qt_IsVertexArray_t)(GLuint array);
+
+    qt_GenVertexArrays_t GenVertexArrays;
+    qt_DeleteVertexArrays_t DeleteVertexArrays;
+    qt_BindVertexArray_t BindVertexArray;
+    qt_IsVertexArray_t IsVertexArray;
+};
+
+QT_END_NAMESPACE
+
+#endif // QOPENGLVERTEXARRAYOBJECT_P_H