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Diffstat (limited to 'src/quick3d/quick3dscene2d/items/scene2d.cpp')
| -rw-r--r-- | src/quick3d/quick3dscene2d/items/scene2d.cpp | 516 |
1 files changed, 516 insertions, 0 deletions
diff --git a/src/quick3d/quick3dscene2d/items/scene2d.cpp b/src/quick3d/quick3dscene2d/items/scene2d.cpp new file mode 100644 index 000000000..b0c58c6c5 --- /dev/null +++ b/src/quick3d/quick3dscene2d/items/scene2d.cpp @@ -0,0 +1,516 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/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 <Qt3DCore/qpropertyupdatedchange.h> +#include <Qt3DCore/qpropertynodeaddedchange.h> +#include <Qt3DCore/qpropertynoderemovedchange.h> +#include <Qt3DQuickScene2D/qscene2d.h> +#include <Qt3DRender/qpicktriangleevent.h> + +#include <QtCore/qthread.h> +#include <QtCore/qatomic.h> +#include <QtGui/qevent.h> + +#include <private/qscene2d_p.h> +#include <private/scene2d_p.h> +#include <private/scene2dmanager_p.h> +#include <private/scene2devent_p.h> +#include <private/graphicscontext_p.h> +#include <private/texture_p.h> +#include <private/nodemanagers_p.h> +#include <private/resourceaccessor_p.h> +#include <private/attachmentpack_p.h> +#include <private/qt3dquickscene2d_logging_p.h> +#include <private/qbackendnode_p.h> +#include <private/qpickevent_p.h> +#include <private/entity_p.h> +#include <private/platformsurfacefilter_p.h> + +QT_BEGIN_NAMESPACE + +#ifndef GL_DEPTH24_STENCIL8 +#define GL_DEPTH24_STENCIL8 0x88F0 +#endif + +using namespace Qt3DRender::Quick; + +namespace Qt3DRender { + +namespace Render { + +namespace Quick { + +Q_GLOBAL_STATIC(QThread, renderThread) +Q_GLOBAL_STATIC(QAtomicInt, renderThreadClientCount) + +RenderQmlEventHandler::RenderQmlEventHandler(Scene2D *node) + : QObject() + , m_node(node) +{ +} + +// Event handler for the RenderQmlToTexture::renderThread +bool RenderQmlEventHandler::event(QEvent *e) +{ + switch (static_cast<Scene2DEvent::Type>(e->type())) { + + case Scene2DEvent::Render: { + m_node->render(); + return true; + } + + case Scene2DEvent::Initialize: { + m_node->initializeRender(); + return true; + } + + case Scene2DEvent::Quit: { + m_node->cleanup(); + return true; + } + + default: + break; + } + return QObject::event(e); +} + +Scene2D::Scene2D() + : Qt3DRender::Render::BackendNode(Qt3DCore::QBackendNode::ReadWrite) + , m_context(nullptr) + , m_shareContext(nullptr) + , m_renderThread(nullptr) + , m_sharedObject(nullptr) + , m_fbo(0) + , m_rbo(0) + , m_initialized(false) + , m_renderInitialized(false) + , m_mouseEnabled(true) + , m_renderPolicy(Qt3DRender::Quick::QScene2D::Continuous) +{ + renderThreadClientCount->fetchAndAddAcquire(1); +} + +Scene2D::~Scene2D() +{ + stopGrabbing(); +} + +void Scene2D::setOutput(Qt3DCore::QNodeId outputId) +{ + m_outputId = outputId; +} + +void Scene2D::initializeSharedObject() +{ + if (!m_initialized) { + + // bail out if we're running autotests + if (!m_sharedObject->m_renderManager + || m_sharedObject->m_renderManager->thread() == QThread::currentThread()) { + return; + } + + renderThread->setObjectName(QStringLiteral("Scene2D::renderThread")); + m_renderThread = renderThread; + m_sharedObject->m_renderThread = m_renderThread; + + // Create event handler for the render thread + m_sharedObject->m_renderObject = new RenderQmlEventHandler(this); + m_sharedObject->m_renderObject->moveToThread(m_sharedObject->m_renderThread); + if (!m_sharedObject->m_renderThread->isRunning()) + m_sharedObject->m_renderThread->start(); + + // Notify main thread we have been initialized + QCoreApplication::postEvent(m_sharedObject->m_renderManager, + new Scene2DEvent(Scene2DEvent::Initialized)); + // Initialize render thread + QCoreApplication::postEvent(m_sharedObject->m_renderObject, + new Scene2DEvent(Scene2DEvent::Initialize)); + + m_initialized = true; + } +} + +void Scene2D::initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change) +{ + const auto typedChange = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<QScene2DData>>(change); + const auto &data = typedChange->data; + m_renderPolicy = data.renderPolicy; + setSharedObject(data.sharedObject); + setOutput(data.output); + m_entities = data.entityIds; + m_mouseEnabled = data.mouseEnabled; +} + +void Scene2D::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e) +{ + switch (e->type()) { + + case Qt3DCore::PropertyUpdated: { + + Qt3DCore::QPropertyUpdatedChangePtr propertyChange + = qSharedPointerCast<Qt3DCore::QPropertyUpdatedChange>(e); + if (propertyChange->propertyName() == QByteArrayLiteral("renderPolicy")) { + m_renderPolicy = propertyChange->value().value<QScene2D::RenderPolicy>(); + } else if (propertyChange->propertyName() == QByteArrayLiteral("output")) { + Qt3DCore::QNodeId outputId = propertyChange->value().value<Qt3DCore::QNodeId>(); + setOutput(outputId); + } else if (propertyChange->propertyName() == QByteArrayLiteral("pressed")) { + QPickEventPtr ev = propertyChange->value().value<QPickEventPtr>(); + handlePickEvent(QEvent::MouseButtonPress, ev); + } else if (propertyChange->propertyName() == QByteArrayLiteral("released")) { + QPickEventPtr ev = propertyChange->value().value<QPickEventPtr>(); + handlePickEvent(QEvent::MouseButtonRelease, ev); + } else if (propertyChange->propertyName() == QByteArrayLiteral("moved")) { + QPickEventPtr ev = propertyChange->value().value<QPickEventPtr>(); + handlePickEvent(QEvent::MouseMove, ev); + } else if (propertyChange->propertyName() == QByteArrayLiteral("mouseEnabled")) { + m_mouseEnabled = propertyChange->value().toBool(); + if (m_mouseEnabled && !m_cachedPickEvent.isNull()) { + handlePickEvent(QEvent::MouseButtonPress, m_cachedPickEvent); + m_cachedPickEvent.clear(); + } + } else if (propertyChange->propertyName() == QByteArrayLiteral("sceneInitialized")) { + startGrabbing(); + } + break; + } + + case Qt3DCore::PropertyValueAdded: { + const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeAddedChange>(e); + if (change->propertyName() == QByteArrayLiteral("entities")) { + m_entities.push_back(change->addedNodeId()); + registerObjectPickerEvents(change->addedNodeId()); + } + break; + } + + case Qt3DCore::PropertyValueRemoved: { + const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeRemovedChange>(e); + if (change->propertyName() == QByteArrayLiteral("entities")) { + m_entities.removeOne(change->removedNodeId()); + unregisterObjectPickerEvents(change->removedNodeId()); + } + break; + } + + default: + break; + } + BackendNode::sceneChangeEvent(e); +} + +void Scene2D::setSharedObject(Qt3DRender::Quick::Scene2DSharedObjectPtr sharedObject) +{ + m_sharedObject = sharedObject; + if (!m_initialized) + initializeSharedObject(); +} + +void Scene2D::initializeRender() +{ + if (!m_renderInitialized && m_sharedObject.data() != nullptr) { + m_shareContext = renderer()->shareContext(); + if (!m_shareContext){ + qCDebug(Qt3DRender::Quick::Scene2D) << Q_FUNC_INFO << "Renderer not initialized."; + QCoreApplication::postEvent(m_sharedObject->m_renderObject, + new Scene2DEvent(Scene2DEvent::Initialize)); + return; + } + m_context = new QOpenGLContext(); +#ifdef Q_OS_MACOS + m_context->setFormat(m_shareContext->format()); +#else + QSurfaceFormat format; + format.setDepthBufferSize(24); + format.setStencilBufferSize(8); + m_context->setFormat(format); +#endif + m_context->setShareContext(m_shareContext); + m_context->create(); + + m_context->makeCurrent(m_sharedObject->m_surface); + m_sharedObject->m_renderControl->initialize(m_context); + m_context->doneCurrent(); + + QCoreApplication::postEvent(m_sharedObject->m_renderManager, + new Scene2DEvent(Scene2DEvent::Prepare)); + m_renderInitialized = true; + } +} + +bool Scene2D::updateFbo(QOpenGLTexture *texture) +{ + QOpenGLFunctions *gl = m_context->functions(); + if (m_fbo == 0) { + gl->glGenFramebuffers(1, &m_fbo); + gl->glGenRenderbuffers(1, &m_rbo); + } + // TODO: Add another codepath when GL_DEPTH24_STENCIL8 is not supported + gl->glBindRenderbuffer(GL_RENDERBUFFER, m_rbo); + gl->glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, + m_textureSize.width(), m_textureSize.height()); + gl->glBindRenderbuffer(GL_RENDERBUFFER, 0); + + gl->glBindFramebuffer(GL_FRAMEBUFFER, m_fbo); + gl->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, texture->textureId(), 0); + gl->glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_rbo); + GLenum status = gl->glCheckFramebufferStatus(GL_FRAMEBUFFER); + gl->glBindFramebuffer(GL_FRAMEBUFFER, 0); + + if (status != GL_FRAMEBUFFER_COMPLETE) + return false; + return true; +} + +void Scene2D::syncRenderControl() +{ + if (m_sharedObject->isSyncRequested()) { + + m_sharedObject->clearSyncRequest(); + + m_sharedObject->m_renderControl->sync(); + + // gui thread can now continue + m_sharedObject->wake(); + } +} + +void Scene2D::render() +{ + if (m_initialized && m_renderInitialized && m_sharedObject.data() != nullptr) { + + QMutexLocker lock(&m_sharedObject->m_mutex); + + QOpenGLTexture *texture = nullptr; + const Qt3DRender::Render::Attachment *attachmentData = nullptr; + QMutex *textureLock = nullptr; + +#ifdef QT_OPENGL_ES_2_ANGLE + SurfaceLocker surfaceLocker(m_sharedObject->m_surface); +#endif + m_context->makeCurrent(m_sharedObject->m_surface); + + if (resourceAccessor()->accessResource(RenderBackendResourceAccessor::OutputAttachment, + m_outputId, (void**)&attachmentData, nullptr)) { + if (!resourceAccessor()->accessResource(RenderBackendResourceAccessor::OGLTexture, + attachmentData->m_textureUuid, + (void**)&texture, &textureLock)) { + // Need to call sync even if the texture is not in use + syncRenderControl(); + m_context->doneCurrent(); + qCDebug(Qt3DRender::Quick::Scene2D) << Q_FUNC_INFO << "Texture not in use."; + QCoreApplication::postEvent(m_sharedObject->m_renderObject, + new Scene2DEvent(Scene2DEvent::Render)); + return; + } + textureLock->lock(); + const QSize textureSize = QSize(texture->width(), texture->height()); + if (m_attachmentData.m_textureUuid != attachmentData->m_textureUuid + || m_attachmentData.m_point != attachmentData->m_point + || m_attachmentData.m_face != attachmentData->m_face + || m_attachmentData.m_layer != attachmentData->m_layer + || m_attachmentData.m_mipLevel != attachmentData->m_mipLevel + || m_textureSize != textureSize) { + m_textureSize = textureSize; + m_attachmentData = *attachmentData; + if (!updateFbo(texture)) { + // Need to call sync even if the fbo is not usable + syncRenderControl(); + textureLock->unlock(); + m_context->doneCurrent(); + qCWarning(Qt3DRender::Quick::Scene2D) << Q_FUNC_INFO << "Fbo not initialized."; + return; + } + } + } + + if (m_fbo != m_sharedObject->m_quickWindow->renderTargetId()) + m_sharedObject->m_quickWindow->setRenderTarget(m_fbo, m_textureSize); + + // Call disallow rendering while mutex is locked + if (m_renderPolicy == QScene2D::SingleShot) + m_sharedObject->disallowRender(); + + // Sync + if (m_sharedObject->isSyncRequested()) { + + m_sharedObject->clearSyncRequest(); + + m_sharedObject->m_renderControl->sync(); + } + + // Render + m_sharedObject->m_renderControl->render(); + + // Tell main thread we are done so it can begin cleanup if this is final frame + if (m_renderPolicy == QScene2D::SingleShot) + QCoreApplication::postEvent(m_sharedObject->m_renderManager, + new Scene2DEvent(Scene2DEvent::Rendered)); + + m_sharedObject->m_quickWindow->resetOpenGLState(); + m_context->functions()->glFlush(); + if (texture->isAutoMipMapGenerationEnabled()) + texture->generateMipMaps(); + textureLock->unlock(); + m_context->doneCurrent(); + + // gui thread can now continue + m_sharedObject->wake(); + } +} + +// this function gets called while the main thread is waiting +void Scene2D::cleanup() +{ + if (m_renderInitialized && m_initialized) { + m_context->makeCurrent(m_sharedObject->m_surface); + m_sharedObject->m_renderControl->invalidate(); + m_context->functions()->glDeleteFramebuffers(1, &m_fbo); + m_context->functions()->glDeleteRenderbuffers(1, &m_rbo); + m_context->doneCurrent(); + m_renderInitialized = false; + } + if (m_initialized) { + delete m_sharedObject->m_renderObject; + m_sharedObject->m_renderObject = nullptr; + delete m_context; + m_context = nullptr; + m_initialized = false; + } + if (m_sharedObject) { + // wake up the main thread + m_sharedObject->wake(); + m_sharedObject = nullptr; + } + + renderThreadClientCount->fetchAndSubAcquire(1); + if (renderThreadClientCount->load() == 0) + renderThread->quit(); +} + + +bool Scene2D::registerObjectPickerEvents(Qt3DCore::QNodeId entityId) +{ + Entity *entity = nullptr; + if (!resourceAccessor()->accessResource(RenderBackendResourceAccessor::EntityHandle, + entityId, (void**)&entity, nullptr)) { + return false; + } + if (!entity->containsComponentsOfType<ObjectPicker>() || + !entity->containsComponentsOfType<GeometryRenderer>()) { + qCWarning(Qt3DRender::Quick::Scene2D) << Q_FUNC_INFO + << "Entity does not contain required components: ObjectPicker and GeometryRenderer"; + return false; + } + Qt3DCore::QBackendNodePrivate *priv = Qt3DCore::QBackendNodePrivate::get(this); + Qt3DCore::QChangeArbiter *arbiter = static_cast<Qt3DCore::QChangeArbiter*>(priv->m_arbiter); + arbiter->registerObserver(d_ptr, entity->componentUuid<ObjectPicker>()); + return true; +} + +void Scene2D::unregisterObjectPickerEvents(Qt3DCore::QNodeId entityId) +{ + Entity *entity = nullptr; + if (!resourceAccessor()->accessResource(RenderBackendResourceAccessor::EntityHandle, + entityId, (void**)&entity, nullptr)) { + return; + } + Qt3DCore::QBackendNodePrivate *priv = Qt3DCore::QBackendNodePrivate::get(this); + Qt3DCore::QChangeArbiter *arbiter = static_cast<Qt3DCore::QChangeArbiter*>(priv->m_arbiter); + arbiter->unregisterObserver(d_ptr, entity->componentUuid<ObjectPicker>()); +} + +void Scene2D::handlePickEvent(int type, const Qt3DRender::QPickEventPtr &ev) +{ + if (!isEnabled()) + return; + if (m_mouseEnabled) { + QPickTriangleEvent *pickTriangle = static_cast<QPickTriangleEvent *>(ev.data()); + Entity *entity = nullptr; + if (!resourceAccessor()->accessResource(RenderBackendResourceAccessor::EntityHandle, + QPickEventPrivate::get(pickTriangle)->m_entity, + (void**)&entity, nullptr)) { + return; + } + CoordinateReader reader(renderer()->nodeManagers()); + if (reader.setGeometry(entity->renderComponent<GeometryRenderer>(), + QAttribute::defaultTextureCoordinateAttributeName())) { + QVector4D c0 = reader.getCoordinate(pickTriangle->vertex1Index()); + QVector4D c1 = reader.getCoordinate(pickTriangle->vertex2Index()); + QVector4D c2 = reader.getCoordinate(pickTriangle->vertex3Index()); + QVector4D ci = c0 * pickTriangle->uvw().x() + + c1 * pickTriangle->uvw().y() + c2 * pickTriangle->uvw().z(); + ci.setW(1.0f); + + const QSize size = m_sharedObject->m_quickWindow->size(); + QPointF pos = QPointF(ci.x() * size.width(), (1.0f - ci.y()) * size.height()); + QMouseEvent *mouseEvent + = new QMouseEvent(static_cast<QEvent::Type>(type), + pos, pos, pos, + static_cast<Qt::MouseButton>(pickTriangle->button()), + static_cast<Qt::MouseButtons>(pickTriangle->buttons()), + static_cast<Qt::KeyboardModifiers>(pickTriangle->modifiers()), + Qt::MouseEventSynthesizedByApplication); + + QCoreApplication::postEvent(m_sharedObject->m_quickWindow, mouseEvent); + } + } else if (type == QEvent::MouseButtonPress) { + m_cachedPickEvent = ev; + } else { + m_cachedPickEvent.clear(); + } +} + +void Scene2D::startGrabbing() +{ + for (Qt3DCore::QNodeId e : qAsConst(m_entities)) + registerObjectPickerEvents(e); +} + +void Scene2D::stopGrabbing() +{ + for (Qt3DCore::QNodeId e : qAsConst(m_entities)) + unregisterObjectPickerEvents(e); +} + +} // namespace Quick +} // namespace Render +} // namespace Qt3DRender + +QT_END_NAMESPACE |