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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
GLenum error = GL_NO_ERROR;
do {
error = glGetError();
if (error != GL_NO_ERROR)
// handle the error
} while (error != GL_NO_ERROR);
//! [0]
//! [1]
QSurfaceFormat format;
// asks for a OpenGL 3.2 debug context using the Core profile
format.setMajorVersion(3);
format.setMinorVersion(2);
format.setProfile(QSurfaceFormat::CoreProfile);
format.setOption(QSurfaceFormat::DebugContext);
QOpenGLContext *context = new QOpenGLContext;
context->setFormat(format);
context->create();
//! [1]
//! [2]
QOpenGLContext *ctx = QOpenGLContext::currentContext();
QOpenGLDebugLogger *logger = new QOpenGLDebugLogger(this);
logger->initialize(); // initializes in the current context, i.e. ctx
//! [2]
//! [3]
ctx->hasExtension(QByteArrayLiteral("GL_KHR_debug"))
//! [3]
//! [4]
const QList<QOpenGLDebugMessage> messages = logger->loggedMessages();
for (const QOpenGLDebugMessage &message : messages)
qDebug() << message;
//! [4]
//! [5]
connect(logger, &QOpenGLDebugLogger::messageLogged, receiver, &LogHandler::handleLoggedMessage);
logger->startLogging();
//! [5]
//! [6]
QOpenGLDebugMessage message =
QOpenGLDebugMessage::createApplicationMessage(QStringLiteral("Custom message"));
logger->logMessage(message);
//! [6]
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