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| |
| #include "buffer_p.h" |
| #include <Qt3DCore/qpropertyupdatedchange.h> |
| #include <Qt3DRender/private/buffermanager_p.h> |
| #include <Qt3DRender/private/qbuffer_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace Qt3DCore; |
| |
| namespace Qt3DRender { |
| namespace Render { |
| |
| Buffer::Buffer() |
| : BackendNode(QBackendNode::ReadWrite) |
| , m_usage(QBuffer::StaticDraw) |
| , m_bufferDirty(false) |
| , m_syncData(false) |
| , m_access(QBuffer::Write) |
| , m_manager(nullptr) |
| { |
| // Maybe it could become read write if we want to inform |
| // the frontend QBuffer node of any backend issue |
| } |
| |
| Buffer::~Buffer() |
| { |
| } |
| |
| void Buffer::cleanup() |
| { |
| m_usage = QBuffer::StaticDraw; |
| m_data.clear(); |
| m_bufferUpdates.clear(); |
| m_functor.reset(); |
| m_bufferDirty = false; |
| m_syncData = false; |
| m_access = QBuffer::Write; |
| } |
| |
| |
| void Buffer::setManager(BufferManager *manager) |
| { |
| m_manager = manager; |
| } |
| |
| void Buffer::executeFunctor() |
| { |
| Q_ASSERT(m_functor); |
| m_data = (*m_functor)(); |
| // Request data to be loaded |
| forceDataUpload(); |
| } |
| |
| //Called from th sendBufferJob |
| void Buffer::updateDataFromGPUToCPU(QByteArray data) |
| { |
| // Note: when this is called, data is what's currently in GPU memory |
| // so m_data shouldn't be reuploaded |
| m_data = data; |
| } |
| |
| void Buffer::forceDataUpload() |
| { |
| // We push back an update with offset = -1 |
| // As this is the way to force data to be loaded |
| QBufferUpdate updateNewData; |
| updateNewData.offset = -1; |
| m_bufferUpdates.clear(); //previous updates are pointless |
| m_bufferUpdates.push_back(updateNewData); |
| } |
| |
| void Buffer::syncFromFrontEnd(const QNode *frontEnd, bool firstTime) |
| { |
| BackendNode::syncFromFrontEnd(frontEnd, firstTime); |
| const QBuffer *node = qobject_cast<const QBuffer *>(frontEnd); |
| if (!node) |
| return; |
| |
| if (firstTime && m_manager != nullptr) { |
| m_manager->addBufferReference(peerId()); |
| m_bufferDirty = true; |
| } |
| |
| m_syncData = node->isSyncData(); |
| m_access = node->accessType(); |
| if (m_usage != node->usage()) { |
| m_usage = node->usage(); |
| m_bufferDirty = true; |
| } |
| { |
| QBufferDataGeneratorPtr newGenerator = node->dataGenerator(); |
| bool dirty = (newGenerator && m_functor && !(*newGenerator == *m_functor)) || |
| (newGenerator.isNull() && !m_functor.isNull()) || |
| (!newGenerator.isNull() && m_functor.isNull()); |
| m_bufferDirty |= dirty; |
| m_functor = newGenerator; |
| if (m_functor && m_manager != nullptr) |
| m_manager->addDirtyBuffer(peerId()); |
| } |
| { |
| const QVariant v = node->property(QBufferPrivate::UpdateDataPropertyName); |
| |
| // Make sure we record data if it's the first time we are called |
| // or if we have no partial updates |
| if (firstTime || !v.isValid()){ |
| const QByteArray newData = node->data(); |
| const bool dirty = m_data != newData; |
| m_bufferDirty |= dirty; |
| m_data = newData; |
| |
| // Since frontend applies partial updates to its m_data |
| // if we enter this code block, there's no problem in actually |
| // ignoring the partial updates |
| if (v.isValid()) |
| const_cast<QBuffer *>(node)->setProperty(QBufferPrivate::UpdateDataPropertyName, {}); |
| |
| if (dirty && !m_data.isEmpty()) |
| forceDataUpload(); |
| } else if (v.isValid()) { |
| // Apply partial updates and record them to allow partial upload to the GPU |
| const QVariantList updateList = v.toList(); |
| for (const QVariant &update : updateList) { |
| Qt3DRender::QBufferUpdate updateData = update.value<Qt3DRender::QBufferUpdate>(); |
| m_data.replace(updateData.offset, updateData.data.size(), updateData.data); |
| m_bufferUpdates.push_back(updateData); |
| m_bufferDirty = true; |
| } |
| |
| const_cast<QBuffer *>(node)->setProperty(QBufferPrivate::UpdateDataPropertyName, {}); |
| } |
| } |
| markDirty(AbstractRenderer::BuffersDirty); |
| } |
| |
| // Called by Renderer once the buffer has been uploaded to OpenGL |
| void Buffer::unsetDirty() |
| { |
| m_bufferDirty = false; |
| } |
| |
| BufferFunctor::BufferFunctor(AbstractRenderer *renderer, BufferManager *manager) |
| : m_manager(manager) |
| , m_renderer(renderer) |
| { |
| } |
| |
| Qt3DCore::QBackendNode *BufferFunctor::create(const Qt3DCore::QNodeCreatedChangeBasePtr &change) const |
| { |
| Buffer *buffer = m_manager->getOrCreateResource(change->subjectId()); |
| buffer->setManager(m_manager); |
| buffer->setRenderer(m_renderer); |
| return buffer; |
| } |
| |
| Qt3DCore::QBackendNode *BufferFunctor::get(Qt3DCore::QNodeId id) const |
| { |
| return m_manager->lookupResource(id); |
| } |
| |
| void BufferFunctor::destroy(Qt3DCore::QNodeId id) const |
| { |
| m_manager->removeBufferReference(id); |
| return m_manager->releaseResource(id); |
| } |
| |
| } // namespace Render |
| } // namespace Qt3DRender |
| |
| QT_END_NAMESPACE |