| 1 | // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
|---|---|
| 2 | // Copyright (C) 2016 Paul Lemire |
| 3 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 4 | |
| 5 | #include "framegraphvisitor_p.h" |
| 6 | |
| 7 | #include "framegraphnode_p.h" |
| 8 | #include "subtreeenabler_p.h" |
| 9 | #include <Qt3DRender/private/abstractrenderer_p.h> |
| 10 | #include <Qt3DRender/private/managers_p.h> |
| 11 | #include <QThreadPool> |
| 12 | |
| 13 | QT_BEGIN_NAMESPACE |
| 14 | |
| 15 | |
| 16 | namespace Qt3DRender { |
| 17 | namespace Render { |
| 18 | |
| 19 | using namespace Qt3DCore; |
| 20 | |
| 21 | FrameGraphVisitor::FrameGraphVisitor(const FrameGraphManager *manager) |
| 22 | : m_manager(manager) |
| 23 | { |
| 24 | m_leaves.reserve(n: 8); |
| 25 | } |
| 26 | |
| 27 | std::vector<FrameGraphNode *> &&FrameGraphVisitor::traverse(FrameGraphNode *root) |
| 28 | { |
| 29 | m_leaves.clear(); |
| 30 | m_enablersToDisable.clear(); |
| 31 | |
| 32 | Q_ASSERT_X(root, Q_FUNC_INFO, "The FrameGraphRoot is null"); |
| 33 | |
| 34 | // Kick off the traversal |
| 35 | Render::FrameGraphNode *node = root; |
| 36 | if (node == nullptr) |
| 37 | qCritical() << Q_FUNC_INFO << "FrameGraph is null"; |
| 38 | visit(node); |
| 39 | return std::move(m_leaves); |
| 40 | } |
| 41 | |
| 42 | // intended to be called after traverse |
| 43 | // (returns data that is captured during the traverse) |
| 44 | std::vector<FrameGraphNode *> &&FrameGraphVisitor::takeEnablersToDisable() |
| 45 | { |
| 46 | return std::move(m_enablersToDisable); |
| 47 | } |
| 48 | |
| 49 | void FrameGraphVisitor::visit(Render::FrameGraphNode *node) |
| 50 | { |
| 51 | if (node->nodeType() == Render::FrameGraphNode::SubtreeEnabler) { |
| 52 | if (!node->isEnabled()) |
| 53 | return; |
| 54 | if (static_cast<SubtreeEnabler*>(node)->enablement() == QSubtreeEnabler::SingleShot) { |
| 55 | node->setEnabled(false); |
| 56 | m_enablersToDisable.push_back(x: node); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | // Recurse to children (if we have any), otherwise if this is a leaf node, |
| 61 | // initiate a rendering from the current camera |
| 62 | const QList<Qt3DCore::QNodeId> fgChildIds = node->childrenIds(); |
| 63 | |
| 64 | for (const Qt3DCore::QNodeId &fgChildId : fgChildIds) |
| 65 | visit(node: m_manager->lookupNode(id: fgChildId)); |
| 66 | |
| 67 | // Leaf node - create a RenderView ready to be populated |
| 68 | // TODO: Pass in only framegraph config that has changed from previous |
| 69 | // index RenderViewJob. |
| 70 | if (fgChildIds.empty()) |
| 71 | m_leaves.push_back(x: node); |
| 72 | } |
| 73 | |
| 74 | } // namespace Render |
| 75 | } // namespace Qt3DRender |
| 76 | |
| 77 | QT_END_NAMESPACE |
| 78 |