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author | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2014-07-29 12:36:30 +0200 |
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committer | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2014-07-30 20:01:49 +0200 |
commit | 12867bb8e2bf56e9397ee6b6014e176fdab6e86f (patch) | |
tree | 212181a5d4c5cbe6d0a143a4462e896fc709c5ad /src/gui/opengl/qopenglvertexarrayobject_p.h | |
parent | 7616586691cf99e63d2b7c0f1fde27791a6a8f24 (diff) |
QOpenGLVAO: refactor the helper class and export it
It is useful in other places, for instance in QtQuick, to avoid
duplicating the same resolver logic.
Change-Id: I9748a420a0abeb07cc84f948965b1e0321a95ca2
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
Diffstat (limited to 'src/gui/opengl/qopenglvertexarrayobject_p.h')
-rw-r--r-- | src/gui/opengl/qopenglvertexarrayobject_p.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/gui/opengl/qopenglvertexarrayobject_p.h b/src/gui/opengl/qopenglvertexarrayobject_p.h new file mode 100644 index 0000000000..161a388b1a --- /dev/null +++ b/src/gui/opengl/qopenglvertexarrayobject_p.h @@ -0,0 +1,119 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com> +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtGui 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.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 <QtCore/qglobal.h> + +#ifndef QT_NO_OPENGL + +#include <QtGui/qopengl.h> + +QT_BEGIN_NAMESPACE + +class QOpenGLVertexArrayObjectHelper; +class QOpenGLContext; + +void Q_GUI_EXPORT qtInitializeVertexArrayObjectHelper(QOpenGLVertexArrayObjectHelper *helper, QOpenGLContext *context); + +class QOpenGLVertexArrayObjectHelper +{ + Q_DISABLE_COPY(QOpenGLVertexArrayObjectHelper) + +public: + explicit inline QOpenGLVertexArrayObjectHelper(QOpenGLContext *context) + : GenVertexArrays(Q_NULLPTR) + , DeleteVertexArrays(Q_NULLPTR) + , BindVertexArray(Q_NULLPTR) + { + qtInitializeVertexArrayObjectHelper(this, context); + } + + inline bool isValid() const + { + return GenVertexArrays && DeleteVertexArrays && BindVertexArray; + } + + 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); + } + +private: + friend void Q_GUI_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); + + qt_GenVertexArrays_t GenVertexArrays; + qt_DeleteVertexArrays_t DeleteVertexArrays; + qt_BindVertexArray_t BindVertexArray; +}; + +QT_END_NAMESPACE + +#endif // QT_NO_OPENGL + +#endif // QOPENGLVERTEXARRAYOBJECT_P_H |