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Pasi Keränen authored66e9d956
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCanvas3D 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "canvasrendernode_p.h"
#include "canvas3d_p.h"
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFramebufferObject>
CanvasRenderNode::CanvasRenderNode(Canvas *canvas, QQuickWindow *window) :
QObject(),
QSGSimpleTextureNode(),
m_canvas(canvas),
m_id(0),
m_size(0,0),
m_texture(0),
m_window(window)
{
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__;
// Our texture node must have a texture, so use the default 0 texture.
m_texture = m_window->createTextureFromId(0, QSize(1, 1));
setTexture(m_texture);
setFiltering(QSGTexture::Linear);
setTextureCoordinatesTransform(QSGSimpleTextureNode::MirrorVertically);
}
CanvasRenderNode::~CanvasRenderNode()
{
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__;
delete m_texture;
}
void CanvasRenderNode::newTexture(int id, const QSize &size)
{
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__ << "(" << id << ", " << size << ")";
m_mutex.lock();
m_id = id;
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m_size = size;
m_mutex.unlock();
// We cannot call QQuickWindow::update directly here, as this is only allowed
// from the rendering thread or GUI thread.
emit pendingNewTexture();
}
// Before the scene graph starts to render, we update to the pending texture
void CanvasRenderNode::prepareNode()
{
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__;
m_mutex.lock();
int newId = m_id;
QSize size = m_size;
m_id = 0;
m_mutex.unlock();
if (newId) {
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__ << " showing new texture:" << newId << " size:" << size << " targetRect:" << rect();
delete m_texture;
m_texture = m_window->createTextureFromId(newId, size);
setTexture(m_texture);
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__ << " SGTexture size:" << m_texture->textureSize() << " normalizedTextureSubRect:" << m_texture->normalizedTextureSubRect();
// This will notify the main thread that the texture is now being rendered
// and it can start rendering to the other one.
emit textureInUse();
} else {
if (m_canvas->logAllCalls()) qDebug() << "CanvasRenderNode::" << __FUNCTION__ << " showing previous texture";
}
}