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diff --git a/examples/quick/scenegraph/sgengine/window.cpp b/examples/quick/scenegraph/sgengine/window.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "window.h"
-
-#include <QOpenGLContext>
-#include <QSGAbstractRenderer>
-#include <QSGEngine>
-#include <QSGSimpleTextureNode>
-#include <QSGTransformNode>
-#include <QScreen>
-#include <QVariantAnimation>
-#include <QOpenGLFunctions>
-#include <QRandomGenerator>
-
-class Item {
-public:
- Item(QSGNode *parentNode, QSGTexture *texture, const QPointF &fromPos, const QPointF &toPos) {
- textureNode = new QSGSimpleTextureNode;
- textureNode->setRect(QRect(QPoint(), texture->textureSize()));
- textureNode->setTexture(texture);
-
- transformNode = new QSGTransformNode;
- transformNode->setFlag(QSGNode::OwnedByParent, false);
- transformNode->appendChildNode(textureNode);
- parentNode->appendChildNode(transformNode);
-
- int duration = QRandomGenerator::global()->generateDouble() * 400 + 800;
- rotAnimation.setStartValue(QRandomGenerator::global()->generateDouble() * 720 - 180);
- rotAnimation.setEndValue(QRandomGenerator::global()->generateDouble() * 720 - 180);
- rotAnimation.setDuration(duration);
- rotAnimation.start();
-
- posAnimation.setStartValue(fromPos);
- posAnimation.setEndValue(toPos);
- posAnimation.setDuration(duration);
- posAnimation.start();
- }
-
- ~Item() {
- delete transformNode;
- }
-
- bool isDone() const { return posAnimation.state() != QAbstractAnimation::Running; }
-
- void sync() {
- QPointF currentPos = posAnimation.currentValue().toPointF();
- QPointF center = textureNode->rect().center();
- QMatrix4x4 m;
- m.translate(currentPos.x(), currentPos.y());
- m.translate(center.x(), center.y());
- m.rotate(rotAnimation.currentValue().toFloat(), 0, 0, 1);
- m.translate(-center.x(), -center.y());
- transformNode->setMatrix(m);
- }
-
-private:
- QSGTransformNode *transformNode;
- QSGSimpleTextureNode *textureNode;
- QVariantAnimation posAnimation;
- QVariantAnimation rotAnimation;
-};
-
-Window::Window()
- : m_initialized(false)
- , m_context(new QOpenGLContext)
- , m_sgEngine(new QSGEngine)
- , m_sgRootNode(new QSGRootNode)
-{
- setSurfaceType(QWindow::OpenGLSurface);
- QRect g(0, 0, 640, 480);
- g.moveCenter(screen()->geometry().center());
- setGeometry(g);
- setTitle(QStringLiteral("Click me!"));
-
- QSurfaceFormat format;
- format.setDepthBufferSize(16);
- setFormat(format);
- m_context->setFormat(format);
- m_context->create();
-
- m_animationDriver.install();
- connect(&m_animationDriver, &QAnimationDriver::started, this, &Window::update);
-}
-
-Window::~Window()
-{
-}
-
-void Window::timerEvent(QTimerEvent *e)
-{
- if (e->timerId() == m_updateTimer.timerId()) {
- m_updateTimer.stop();
-
- if (!m_context->makeCurrent(this))
- return;
-
- if (!m_initialized)
- initialize();
-
- sync();
- render();
-
- if (m_animationDriver.isRunning()) {
- m_animationDriver.advance();
- update();
- }
- } else
- QWindow::timerEvent(e);
-}
-
-void Window::exposeEvent(QExposeEvent *)
-{
- if (isExposed())
- update();
- else
- invalidate();
-}
-
-void Window::mousePressEvent(QMouseEvent *)
-{
- addItems();
-}
-
-void Window::keyPressEvent(QKeyEvent *)
-{
- addItems();
-}
-
-void Window::addItems()
-{
- if (!m_initialized)
- return;
-
- QSGTexture *textures[] = { m_smileTexture.data(), m_qtTexture.data() };
- for (int i = 0; i < 50; ++i) {
- QSGTexture *tex = textures[i%2];
- QPointF fromPos(-tex->textureSize().width(), QRandomGenerator::global()->generateDouble() * (height() - tex->textureSize().height()));
- QPointF toPos(width(), QRandomGenerator::global()->generateDouble() * height() * 1.5 - height() * 0.25);
- m_items.append(QSharedPointer<Item>::create(m_sgRootNode.data(), tex, fromPos, toPos));
- }
- update();
-}
-
-void Window::update()
-{
- if (!m_updateTimer.isActive())
- m_updateTimer.start(0, this);
-}
-
-void Window::sync()
-{
- QList<QSharedPointer<Item> > validItems;
- for (QSharedPointer<Item> item : qAsConst(m_items)) {
- if (!item->isDone()) {
- validItems.append(item);
- item->sync();
- }
- }
- m_items.swap(validItems);
-}
-
-void Window::render()
-{
- m_sgRenderer->setDeviceRect(size());
- m_sgRenderer->setViewportRect(size());
- m_sgRenderer->setProjectionMatrixToRect(QRectF(QPointF(), size()));
- m_sgRenderer->renderScene();
-
- m_context->swapBuffers(this);
-}
-
-void Window::initialize()
-{
- m_sgEngine->initialize(m_context.data());
- m_sgRenderer.reset(m_sgEngine->createRenderer());
- m_sgRenderer->setRootNode(m_sgRootNode.data());
- m_sgRenderer->setClearColor(QColor(32, 32, 32));
-
- // With QSGEngine::createTextureFromId
- QOpenGLFunctions glFuncs(m_context.data());
- GLuint glTexture;
- glFuncs.glGenTextures(1, &glTexture);
- glFuncs.glBindTexture(GL_TEXTURE_2D, glTexture);
- QImage smile = QImage(":/scenegraph/sgengine/face-smile.png").scaled(48, 48, Qt::KeepAspectRatio, Qt::SmoothTransformation);
- smile = smile.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
- Q_ASSERT(!smile.isNull());
- glFuncs.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, smile.width(), smile.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, smile.constBits());
- m_smileTexture.reset(m_sgEngine->createTextureFromId(glTexture, smile.size(), QFlag(QSGEngine::TextureOwnsGLTexture | QSGEngine::TextureHasAlphaChannel)));
-
- // With QSGEngine::createTextureFromImage
- QImage qtLogo = QImage(":/shared/images/qt-logo.png").scaled(48, 48, Qt::KeepAspectRatio, Qt::SmoothTransformation);
- Q_ASSERT(!qtLogo.isNull());
- m_qtTexture.reset(m_sgEngine->createTextureFromImage(qtLogo));
- m_initialized = true;
-}
-
-void Window::invalidate()
-{
- m_updateTimer.stop();
- m_items.clear();
- m_smileTexture.reset();
- m_qtTexture.reset();
- m_sgRenderer.reset();
- m_sgEngine->invalidate();
- m_initialized = false;
-}
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