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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 "customrenderitem.h"
#include <QQuickWindow>
#include <QSGRendererInterface>
#include "openglrenderer.h"
#include "d3d12renderer.h"
CustomRenderNode::~CustomRenderNode()
{
releaseResources();
}
void CustomRenderNode::render(const RenderState *state)
{
QSGRendererInterface *ri = m_item->window()->rendererInterface();
if (!ri)
return;
if (!m_renderer) {
switch (ri->graphicsAPI()) {
case QSGRendererInterface::OpenGL:
#ifndef QT_NO_OPENGL
m_renderer = new OpenGLRenderer(m_item, this);
#endif
break;
case QSGRendererInterface::Direct3D12:
#ifdef HAS_D3D12
m_renderer = new D3D12Renderer(m_item, this);
#endif
break;
default:
break;
}
Q_ASSERT(m_renderer);
m_renderer->init();
}
m_renderer->render(state);
}
// No need to reimplement changedStates() since our rendering is so simple,
// without involving any state changes.
void CustomRenderNode::releaseResources()
{
if (!m_renderer)
return;
delete m_renderer;
m_renderer = nullptr;
}
CustomRenderItem::CustomRenderItem(QQuickItem *parent)
: QQuickItem(parent)
{
// Our item shows something so set the flag.
setFlag(ItemHasContents);
}
QSGNode *CustomRenderItem::updatePaintNode(QSGNode *node, UpdatePaintNodeData *)
{
CustomRenderNode *n = static_cast<CustomRenderNode *>(node);
if (!node)
n = new CustomRenderNode(this);
return n;
}
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