05fc3aef53
Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
// Copyright (C) 2022 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "glwidget.h"
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#include "renderer.h"
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#include <qmath.h>
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#include <QGuiApplication>
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GLWidget::GLWidget(QWidget *parent)
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: QOpenGLWidget(parent)
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{
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setMinimumSize(300, 250);
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connect(this, &QOpenGLWidget::aboutToCompose, this, &GLWidget::onAboutToCompose);
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connect(this, &QOpenGLWidget::frameSwapped, this, &GLWidget::onFrameSwapped);
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connect(this, &QOpenGLWidget::aboutToResize, this, &GLWidget::onAboutToResize);
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connect(this, &QOpenGLWidget::resized, this, &GLWidget::onResized);
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m_thread = new QThread;
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m_renderer = new Renderer(this);
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m_renderer->moveToThread(m_thread);
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connect(m_thread, &QThread::finished, m_renderer, &QObject::deleteLater);
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connect(this, &GLWidget::renderRequested, m_renderer, &Renderer::render);
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connect(m_renderer, &Renderer::contextWanted, this, &GLWidget::grabContext);
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m_thread->start();
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}
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GLWidget::~GLWidget()
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{
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m_renderer->prepareExit();
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m_thread->quit();
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m_thread->wait();
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delete m_thread;
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}
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void GLWidget::onAboutToCompose()
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{
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// We are on the gui thread here. Composition is about to
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// begin. Wait until the render thread finishes.
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m_renderer->lockRenderer();
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}
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void GLWidget::onFrameSwapped()
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{
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m_renderer->unlockRenderer();
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// Assuming a blocking swap, our animation is driven purely by the
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// vsync in this example.
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emit renderRequested();
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}
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void GLWidget::onAboutToResize()
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{
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m_renderer->lockRenderer();
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}
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void GLWidget::onResized()
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{
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m_renderer->unlockRenderer();
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}
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void GLWidget::grabContext()
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{
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m_renderer->lockRenderer();
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QMutexLocker lock(m_renderer->grabMutex());
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context()->moveToThread(m_thread);
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m_renderer->grabCond()->wakeAll();
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m_renderer->unlockRenderer();
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}
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