| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Data Visualization module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
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| ** |
| ****************************************************************************/ |
| |
| #include "declarativerendernode_p.h" |
| #include "abstractdeclarative_p.h" |
| #include <QtGui/QOpenGLFramebufferObject> |
| #include <QtCore/QMutexLocker> |
| |
| QT_BEGIN_NAMESPACE_DATAVISUALIZATION |
| |
| DeclarativeRenderNode::DeclarativeRenderNode(AbstractDeclarative *declarative, |
| const QSharedPointer<QMutex> &nodeMutex) |
| : QSGGeometryNode(), |
| m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4), |
| m_texture(0), |
| m_declarative(declarative), |
| m_controller(0), |
| m_fbo(0), |
| m_multisampledFBO(0), |
| m_window(0), |
| m_samples(0), |
| m_dirtyFBO(false) |
| { |
| m_nodeMutex = nodeMutex; |
| setMaterial(&m_material); |
| setOpaqueMaterial(&m_materialO); |
| setGeometry(&m_geometry); |
| setFlag(UsePreprocess); |
| } |
| |
| DeclarativeRenderNode::~DeclarativeRenderNode() |
| { |
| delete m_fbo; |
| delete m_multisampledFBO; |
| delete m_texture; |
| |
| m_nodeMutex.clear(); |
| } |
| |
| void DeclarativeRenderNode::setSize(const QSize &size) |
| { |
| if (size == m_size) |
| return; |
| |
| m_size = size; |
| m_dirtyFBO = true; |
| markDirty(DirtyGeometry); |
| } |
| |
| void DeclarativeRenderNode::update() |
| { |
| if (m_dirtyFBO) { |
| updateFBO(); |
| m_dirtyFBO = false; |
| } |
| } |
| |
| void DeclarativeRenderNode::updateFBO() |
| { |
| m_declarative->activateOpenGLContext(m_window); |
| |
| if (m_fbo) |
| delete m_fbo; |
| |
| m_fbo = new QOpenGLFramebufferObject(m_size); |
| m_fbo->setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil); |
| |
| // Multisampled |
| if (m_multisampledFBO) { |
| delete m_multisampledFBO; |
| m_multisampledFBO = 0; |
| } |
| if (m_samples > 0) { |
| QOpenGLFramebufferObjectFormat multisampledFrambufferFormat; |
| multisampledFrambufferFormat.setSamples(m_samples); |
| multisampledFrambufferFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil); |
| |
| m_multisampledFBO = new QOpenGLFramebufferObject(m_size, multisampledFrambufferFormat); |
| } |
| |
| QSGGeometry::updateTexturedRectGeometry(&m_geometry, |
| QRectF(0, 0, |
| m_size.width() |
| / m_controller->scene()->devicePixelRatio(), |
| m_size.height() |
| / m_controller->scene()->devicePixelRatio()), |
| QRectF(0, 1, 1, -1)); |
| |
| delete m_texture; |
| const uint id = m_fbo->texture(); |
| m_texture = |
| m_window->createTextureFromNativeObject(QQuickWindow::NativeObjectTexture, |
| &id, 0 /* nativeLayout */, m_size); |
| m_material.setTexture(m_texture); |
| m_materialO.setTexture(m_texture); |
| |
| m_declarative->doneOpenGLContext(m_window); |
| } |
| |
| void DeclarativeRenderNode::setQuickWindow(QQuickWindow *window) |
| { |
| Q_ASSERT(window); |
| |
| m_window = window; |
| } |
| |
| void DeclarativeRenderNode::setController(Abstract3DController *controller) |
| { |
| QMutexLocker locker(m_nodeMutex.data()); |
| m_controller = controller; |
| if (m_controller) { |
| connect(m_controller, &QObject::destroyed, |
| this, &DeclarativeRenderNode::handleControllerDestroyed, Qt::DirectConnection); |
| } |
| } |
| |
| void DeclarativeRenderNode::setSamples(int samples) |
| { |
| if (m_samples == samples) |
| return; |
| |
| m_samples = samples; |
| m_dirtyFBO = true; |
| } |
| |
| void DeclarativeRenderNode::preprocess() |
| { |
| QMutexLocker locker(m_nodeMutex.data()); |
| |
| if (!m_controller) |
| return; |
| |
| QOpenGLFramebufferObject *targetFBO; |
| if (m_samples > 0) |
| targetFBO = m_multisampledFBO; |
| else |
| targetFBO = m_fbo; |
| |
| m_declarative->activateOpenGLContext(m_window); |
| |
| targetFBO->bind(); |
| // Render scene here |
| m_controller->render(targetFBO->handle()); |
| |
| targetFBO->release(); |
| |
| if (m_samples > 0) |
| QOpenGLFramebufferObject::blitFramebuffer(m_fbo, m_multisampledFBO); |
| |
| m_declarative->doneOpenGLContext(m_window); |
| } |
| |
| // This function is called within m_nodeMutex lock |
| void DeclarativeRenderNode::handleControllerDestroyed() |
| { |
| m_controller = 0; |
| } |
| |
| QT_END_NAMESPACE_DATAVISUALIZATION |