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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
** Public license version 3 or 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.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef DELEGATED_FRAME_NODE_H
#define DELEGATED_FRAME_NODE_H
#include "cc/quads/render_pass.h"
#include "cc/resources/transferable_resource.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "ui/gl/gl_fence.h"
#include <QMutex>
#include <QSGNode>
#include <QSharedData>
#include <QSharedPointer>
#include <QWaitCondition>
#include <QtGui/QOffscreenSurface>
#include "chromium_gpu_helper.h"
#include "render_widget_host_view_qt_delegate.h"
QT_BEGIN_NAMESPACE
class QSGLayer;
QT_END_NAMESPACE
namespace cc {
class DelegatedFrameData;
class DrawQuad;
class DrawPolygon;
}
namespace gfx {
class QuadF;
}
namespace QtWebEngineCore {
class DelegatedNodeTreeHandler;
class MailboxTexture;
class ResourceHolder;
// Separating this data allows another DelegatedFrameNode to reconstruct the QSGNode tree from the mailbox textures
// and render pass information.
class ChromiumCompositorData : public QSharedData {
public:
ChromiumCompositorData() : frameDevicePixelRatio(1) { }
QHash<unsigned, QSharedPointer<ResourceHolder> > resourceHolders;
std::unique_ptr<cc::DelegatedFrameData> frameData;
std::unique_ptr<cc::DelegatedFrameData> previousFrameData;
qreal frameDevicePixelRatio;
};
class DelegatedFrameNode : public QSGTransformNode {
public:
DelegatedFrameNode();
~DelegatedFrameNode();
void preprocess();
void commit(ChromiumCompositorData *chromiumCompositorData, cc::ReturnedResourceArray *resourcesToRelease, RenderWidgetHostViewQtDelegate *apiDelegate);
private:
void flushPolygons(
std::deque<std::unique_ptr<cc::DrawPolygon>> *polygonQueue,
QSGNode *renderPassChain,
DelegatedNodeTreeHandler *nodeHandler,
QHash<unsigned, QSharedPointer<ResourceHolder> > &resourceCandidates,
RenderWidgetHostViewQtDelegate *apiDelegate);
void handlePolygon(
const cc::DrawPolygon *polygon,
QSGNode *currentLayerChain,
DelegatedNodeTreeHandler *nodeHandler,
QHash<unsigned, QSharedPointer<ResourceHolder> > &resourceCandidates,
RenderWidgetHostViewQtDelegate *apiDelegate);
void handleClippedQuad(
const cc::DrawQuad *quad,
const gfx::QuadF &clipRegion,
QSGNode *currentLayerChain,
DelegatedNodeTreeHandler *nodeHandler,
QHash<unsigned, QSharedPointer<ResourceHolder> > &resourceCandidates,
RenderWidgetHostViewQtDelegate *apiDelegate);
void handleQuad(
const cc::DrawQuad *quad,
QSGNode *currentLayerChain,
DelegatedNodeTreeHandler *nodeHandler,
QHash<unsigned, QSharedPointer<ResourceHolder> > &resourceCandidates,
RenderWidgetHostViewQtDelegate *apiDelegate);
void fetchAndSyncMailboxes(QList<MailboxTexture *> &mailboxesToFetch);
// Making those callbacks static bypasses base::Bind's ref-counting requirement
// of the this pointer when the callback is a method.
static void pullTexture(DelegatedFrameNode *frameNode, MailboxTexture *mailbox);
static void fenceAndUnlockQt(DelegatedFrameNode *frameNode);
ResourceHolder *findAndHoldResource(unsigned resourceId, QHash<unsigned, QSharedPointer<ResourceHolder> > &candidates);
QSGTexture *initAndHoldTexture(ResourceHolder *resource, bool quadIsAllOpaque, RenderWidgetHostViewQtDelegate *apiDelegate = 0);
QExplicitlySharedDataPointer<ChromiumCompositorData> m_chromiumCompositorData;
struct SGObjects {
QVector<QPair<cc::RenderPassId, QSharedPointer<QSGLayer> > > renderPassLayers;
QVector<QSharedPointer<QSGRootNode> > renderPassRootNodes;
QVector<QSharedPointer<QSGTexture> > textureStrongRefs;
} m_sgObjects;
QVector<QSGNode*> m_sceneGraphNodes;
int m_numPendingSyncPoints;
QWaitCondition m_mailboxesFetchedWaitCond;
QMutex m_mutex;
QList<gl::TransferableFence> m_textureFences;
std::unique_ptr<gpu::SyncPointClient> m_syncPointClient;
#if defined(USE_X11)
bool m_contextShared;
QScopedPointer<QOffscreenSurface> m_offsurface;
#endif
};
} // namespace QtWebEngineCore
#endif // DELEGATED_FRAME_NODE_H
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