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// Copyright (C) 2020 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sean Harmer <sean.harmer@kdab.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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>
#include <QtCore/private/qglobal_p.h>
QT_BEGIN_NAMESPACE
class QOpenGLContext;
class QOpenGLVertexArrayObjectHelper
{
Q_DISABLE_COPY(QOpenGLVertexArrayObjectHelper)
private:
explicit inline QOpenGLVertexArrayObjectHelper(QOpenGLContext *context)
: GenVertexArrays(nullptr)
, DeleteVertexArrays(nullptr)
, BindVertexArray(nullptr)
, IsVertexArray(nullptr)
{
initializeFromContext(context);
}
void Q_OPENGL_EXPORT initializeFromContext(QOpenGLContext *context);
public:
static Q_OPENGL_EXPORT QOpenGLVertexArrayObjectHelper *vertexArrayObjectHelperForContext(QOpenGLContext *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);
}
// 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
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