436b331b71
This is a commit in preparation for an upcoming change in QtQuick. We want to store the resolved functions for managing VAOs somewhere; the "least worst" choice is next to the all other function resolvers, which are in QOpenGLContext(Private). To avoid moving the VAO resolvers themselves, leave a hook in QOGLCPrivate, similar to e.g. the texture function resolvers. The hook gets populated when the VAO resolvers for a given context are requested. This removes memory management burden from the users of those functions (again, just like other function resolvers), and makes the initialization of the functions automatic. Change-Id: I0eba30a85bf8ad82946a5d68e91009d8b4bd91cf Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com>
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtOpenGL module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QOPENGLVERTEXARRAYOBJECT_P_H
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#define QOPENGLVERTEXARRAYOBJECT_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of the Qt OpenGL classes. This header file may change from
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// version to version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtOpenGL/qtopenglglobal.h>
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#include <QtGui/qopengl.h>
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QT_BEGIN_NAMESPACE
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class QOpenGLContext;
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class QOpenGLVertexArrayObjectHelper
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{
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Q_DISABLE_COPY(QOpenGLVertexArrayObjectHelper)
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private:
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explicit inline QOpenGLVertexArrayObjectHelper(QOpenGLContext *context)
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: GenVertexArrays(nullptr)
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, DeleteVertexArrays(nullptr)
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, BindVertexArray(nullptr)
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, IsVertexArray(nullptr)
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{
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initializeFromContext(context);
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}
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void Q_OPENGL_EXPORT initializeFromContext(QOpenGLContext *context);
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public:
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static Q_OPENGL_EXPORT QOpenGLVertexArrayObjectHelper *vertexArrayObjectHelperForContext(QOpenGLContext *context);
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inline bool isValid() const
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{
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return GenVertexArrays && DeleteVertexArrays && BindVertexArray && IsVertexArray;
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}
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inline void glGenVertexArrays(GLsizei n, GLuint *arrays) const
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{
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GenVertexArrays(n, arrays);
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}
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inline void glDeleteVertexArrays(GLsizei n, const GLuint *arrays) const
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{
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DeleteVertexArrays(n, arrays);
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}
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inline void glBindVertexArray(GLuint array) const
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{
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BindVertexArray(array);
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}
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inline GLboolean glIsVertexArray(GLuint array) const
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{
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return IsVertexArray(array);
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}
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// Function signatures are equivalent between desktop core, ARB, APPLE, ES 3 and ES 2 extensions
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typedef void (QOPENGLF_APIENTRYP qt_GenVertexArrays_t)(GLsizei n, GLuint *arrays);
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typedef void (QOPENGLF_APIENTRYP qt_DeleteVertexArrays_t)(GLsizei n, const GLuint *arrays);
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typedef void (QOPENGLF_APIENTRYP qt_BindVertexArray_t)(GLuint array);
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typedef GLboolean (QOPENGLF_APIENTRYP qt_IsVertexArray_t)(GLuint array);
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qt_GenVertexArrays_t GenVertexArrays;
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qt_DeleteVertexArrays_t DeleteVertexArrays;
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qt_BindVertexArray_t BindVertexArray;
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qt_IsVertexArray_t IsVertexArray;
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};
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QT_END_NAMESPACE
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#endif // QOPENGLVERTEXARRAYOBJECT_P_H
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