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| ** Copyright (C) 2019 The Qt Company Ltd. |
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| ** This file is part of the QtWebEngine module of the Qt Toolkit. |
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| |
| #include "display_software_output_surface.h" |
| |
| #include "display_frame_sink.h" |
| #include "render_widget_host_view_qt_delegate.h" |
| #include "type_conversion.h" |
| |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "components/viz/service/display/display.h" |
| #include "components/viz/service/display/output_surface_frame.h" |
| |
| #include <QMutex> |
| #include <QPainter> |
| #include <QSGImageNode> |
| |
| namespace QtWebEngineCore { |
| |
| class DisplaySoftwareOutputSurface::Device final : public viz::SoftwareOutputDevice, public DisplayProducer |
| { |
| public: |
| ~Device(); |
| |
| // Called from DisplaySoftwareOutputSurface. |
| void bind(viz::FrameSinkId frameSinkId); |
| |
| // Overridden from viz::SoftwareOutputDevice. |
| void Resize(const gfx::Size &sizeInPixels, float devicePixelRatio) override; |
| void OnSwapBuffers(SwapBuffersCallback swap_ack_callback) override; |
| |
| // Overridden from DisplayProducer. |
| QSGNode *updatePaintNode(QSGNode *oldNode, RenderWidgetHostViewQtDelegate *delegate) override; |
| |
| private: |
| mutable QMutex m_mutex; |
| scoped_refptr<DisplayFrameSink> m_sink; |
| float m_devicePixelRatio = 1.0; |
| scoped_refptr<base::SingleThreadTaskRunner> m_taskRunner; |
| SwapBuffersCallback m_swapCompletionCallback; |
| QImage m_image; |
| float m_imageDevicePixelRatio = 1.0; |
| }; |
| |
| DisplaySoftwareOutputSurface::Device::~Device() |
| { |
| if (m_sink) |
| m_sink->disconnect(this); |
| } |
| |
| void DisplaySoftwareOutputSurface::Device::bind(viz::FrameSinkId frameSinkId) |
| { |
| m_sink = DisplayFrameSink::findOrCreate(frameSinkId); |
| m_sink->connect(this); |
| } |
| |
| void DisplaySoftwareOutputSurface::Device::Resize(const gfx::Size &sizeInPixels, float devicePixelRatio) |
| { |
| if (viewport_pixel_size_ == sizeInPixels && m_devicePixelRatio == devicePixelRatio) |
| return; |
| m_devicePixelRatio = devicePixelRatio; |
| viewport_pixel_size_ = sizeInPixels; |
| surface_ = SkSurface::MakeRaster(SkImageInfo::MakeN32Premul(sizeInPixels.width(), sizeInPixels.height())); |
| } |
| |
| void DisplaySoftwareOutputSurface::Device::OnSwapBuffers(SwapBuffersCallback swap_ack_callback) |
| { |
| QMutexLocker locker(&m_mutex); |
| m_taskRunner = base::ThreadTaskRunnerHandle::Get(); |
| m_swapCompletionCallback = std::move(swap_ack_callback); |
| m_sink->scheduleUpdate(); |
| } |
| |
| inline QImage::Format imageFormat(SkColorType colorType) |
| { |
| switch (colorType) { |
| case kBGRA_8888_SkColorType: |
| return QImage::Format_ARGB32_Premultiplied; |
| case kRGBA_8888_SkColorType: |
| return QImage::Format_RGBA8888_Premultiplied; |
| default: |
| Q_UNREACHABLE(); |
| return QImage::Format_ARGB32_Premultiplied; |
| } |
| } |
| |
| QSGNode *DisplaySoftwareOutputSurface::Device::updatePaintNode( |
| QSGNode *oldNode, RenderWidgetHostViewQtDelegate *delegate) |
| { |
| QMutexLocker locker(&m_mutex); |
| |
| // Delete old node to make sure refcount of m_image is at most 1. |
| delete oldNode; |
| QSGImageNode *node = delegate->createImageNode(); |
| |
| if (m_swapCompletionCallback) { |
| SkPixmap skPixmap; |
| surface_->peekPixels(&skPixmap); |
| QImage image(reinterpret_cast<const uchar *>(skPixmap.addr()), |
| viewport_pixel_size_.width(), viewport_pixel_size_.height(), |
| skPixmap.rowBytes(), imageFormat(skPixmap.colorType())); |
| if (m_image.size() == image.size()) { |
| QRect damageRect = toQt(damage_rect_); |
| QPainter painter(&m_image); |
| painter.setCompositionMode(QPainter::CompositionMode_Source); |
| painter.drawImage(damageRect, image, damageRect); |
| } else { |
| m_image = image; |
| m_image.detach(); |
| } |
| m_imageDevicePixelRatio = m_devicePixelRatio; |
| m_taskRunner->PostTask(FROM_HERE, base::BindOnce(std::move(m_swapCompletionCallback), toGfx(m_image.size()))); |
| m_taskRunner.reset(); |
| } |
| |
| QSizeF sizeInDips = QSizeF(m_image.size()) / m_imageDevicePixelRatio; |
| node->setRect(QRectF(QPointF(0, 0), sizeInDips)); |
| node->setOwnsTexture(true); |
| node->setTexture(delegate->createTextureFromImage(m_image)); |
| |
| return node; |
| } |
| |
| DisplaySoftwareOutputSurface::DisplaySoftwareOutputSurface() |
| : SoftwareOutputSurface(std::make_unique<Device>()) |
| {} |
| |
| DisplaySoftwareOutputSurface::~DisplaySoftwareOutputSurface() {} |
| |
| // Called from viz::Display::Initialize. |
| void DisplaySoftwareOutputSurface::BindToClient(viz::OutputSurfaceClient *client) |
| { |
| auto display = static_cast<viz::Display *>(client); |
| auto device = static_cast<Device *>(software_device()); |
| device->bind(display->frame_sink_id()); |
| SoftwareOutputSurface::BindToClient(client); |
| } |
| |
| } // namespace QtWebEngineCore |