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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [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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