86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
// Copyright (C) 2020 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com>
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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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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#include <QtCore/private/qglobal_p.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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