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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "display_skia_output_device.h"
#include "compositor_resource_fence.h"
#include "type_conversion.h"
#include "gpu/command_buffer/service/skia_utils.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/core/SkSurfaceProps.h"
#include "third_party/skia/include/gpu/ganesh/SkSurfaceGanesh.h"
#include "third_party/skia/include/gpu/ganesh/gl/GrGLBackendSurface.h"
#include <QSGTexture>
namespace QtWebEngineCore {
class DisplaySkiaOutputDevice::Buffer
{
public:
Buffer(DisplaySkiaOutputDevice *parent)
: m_parent(parent)
, m_shape(m_parent->m_shape)
{
}
void initialize()
{
const auto &colorType = m_shape.imageInfo.colorType();
DCHECK(colorType != kUnknown_SkColorType);
m_texture = m_parent->m_contextState->gr_context()->createBackendTexture(
m_shape.imageInfo.width(), m_shape.imageInfo.height(), colorType,
GrMipMapped::kNo, GrRenderable::kYes);
DCHECK(m_texture.isValid());
DCHECK(m_texture.backend() == GrBackendApi::kOpenGL);
auto info = SkImageInfo::Make(m_shape.imageInfo.width(), m_shape.imageInfo.height(),
colorType, kUnpremul_SkAlphaType);
m_estimatedSize = info.computeMinByteSize();
m_parent->memory_type_tracker_->TrackMemAlloc(m_estimatedSize);
SkSurfaceProps surfaceProps = SkSurfaceProps{0, kUnknown_SkPixelGeometry};
m_surface = SkSurfaces::WrapBackendTexture(
m_parent->m_contextState->gr_context(), m_texture,
m_parent->capabilities_.output_surface_origin == gfx::SurfaceOrigin::kTopLeft
? kTopLeft_GrSurfaceOrigin
: kBottomLeft_GrSurfaceOrigin,
0 /* sampleCount */, colorType, m_shape.colorSpace.ToSkColorSpace(),
&surfaceProps);
}
~Buffer()
{
if (m_texture.isValid()) {
DeleteGrBackendTexture(m_parent->m_contextState.get(), &m_texture);
m_parent->memory_type_tracker_->TrackMemFree(m_estimatedSize);
}
}
void createFence()
{
m_fence = CompositorResourceFence::create();
}
void consumeFence()
{
if (m_fence) {
m_fence->wait();
m_fence.reset();
}
}
const Shape &shape() const { return m_shape; }
const GrBackendTexture &texture() const { return m_texture; }
SkSurface *surface() const { return m_surface.get(); }
private:
DisplaySkiaOutputDevice *m_parent;
Shape m_shape;
GrBackendTexture m_texture;
sk_sp<SkSurface> m_surface;
uint64_t m_estimatedSize = 0;
scoped_refptr<CompositorResourceFence> m_fence;
};
DisplaySkiaOutputDevice::DisplaySkiaOutputDevice(
scoped_refptr<gpu::SharedContextState> contextState,
bool requiresAlpha,
gpu::MemoryTracker *memoryTracker,
DidSwapBufferCompleteCallback didSwapBufferCompleteCallback)
: SkiaOutputDevice(contextState->gr_context(), contextState->graphite_context(),
memoryTracker, didSwapBufferCompleteCallback)
, Compositor(Compositor::Type::OpenGL)
, m_contextState(contextState)
, m_requiresAlpha(requiresAlpha)
{
capabilities_.uses_default_gl_framebuffer = false;
capabilities_.supports_surfaceless = true;
capabilities_.preserve_buffer_content = true;
capabilities_.only_invalidates_damage_rect = false;
capabilities_.number_of_buffers = 3;
capabilities_.sk_color_types[static_cast<int>(gfx::BufferFormat::RGBA_8888)] =
kRGBA_8888_SkColorType;
capabilities_.sk_color_types[static_cast<int>(gfx::BufferFormat::RGBX_8888)] =
kRGBA_8888_SkColorType;
capabilities_.sk_color_types[static_cast<int>(gfx::BufferFormat::BGRA_8888)] =
kRGBA_8888_SkColorType;
capabilities_.sk_color_types[static_cast<int>(gfx::BufferFormat::BGRX_8888)] =
kRGBA_8888_SkColorType;
}
DisplaySkiaOutputDevice::~DisplaySkiaOutputDevice()
{
}
void DisplaySkiaOutputDevice::SetFrameSinkId(const viz::FrameSinkId &id)
{
bind(id);
}
bool DisplaySkiaOutputDevice::Reshape(const SkImageInfo &image_info,
const gfx::ColorSpace &colorSpace,
int sample_count,
float device_scale_factor,
gfx::OverlayTransform transform)
{
m_shape = Shape{image_info, device_scale_factor, colorSpace};
DCHECK_EQ(transform, gfx::OVERLAY_TRANSFORM_NONE);
return true;
}
void DisplaySkiaOutputDevice::Present(const absl::optional<gfx::Rect> &update_rect,
BufferPresentedCallback feedback,
viz::OutputSurfaceFrame frame)
{
DCHECK(m_backBuffer);
StartSwapBuffers(std::move(feedback));
m_frame = std::move(frame);
m_backBuffer->createFence();
{
QMutexLocker locker(&m_mutex);
m_taskRunner = base::SingleThreadTaskRunner::GetCurrentDefault();
std::swap(m_middleBuffer, m_backBuffer);
m_readyToUpdate = true;
}
if (auto obs = observer())
obs->readyToSwap();
}
void DisplaySkiaOutputDevice::EnsureBackbuffer()
{
}
void DisplaySkiaOutputDevice::DiscardBackbuffer()
{
}
SkSurface *DisplaySkiaOutputDevice::BeginPaint(std::vector<GrBackendSemaphore> *end_semaphores)
{
if (!m_backBuffer || m_backBuffer->shape() != m_shape) {
m_backBuffer = std::make_unique<Buffer>(this);
m_backBuffer->initialize();
}
return m_backBuffer->surface();
}
void DisplaySkiaOutputDevice::EndPaint()
{
}
void DisplaySkiaOutputDevice::swapFrame()
{
QMutexLocker locker(&m_mutex);
if (m_readyToUpdate) {
std::swap(m_middleBuffer, m_frontBuffer);
m_taskRunner->PostTask(FROM_HERE,
base::BindOnce(&DisplaySkiaOutputDevice::SwapBuffersFinished,
base::Unretained(this)));
m_taskRunner.reset();
m_readyToUpdate = false;
}
}
void DisplaySkiaOutputDevice::waitForTexture()
{
if (m_frontBuffer)
m_frontBuffer->consumeFence();
}
QSGTexture *DisplaySkiaOutputDevice::texture(QQuickWindow *win, uint32_t textureOptions)
{
if (!m_frontBuffer)
return nullptr;
QQuickWindow::CreateTextureOptions texOpts(textureOptions);
QSGTexture *texture = nullptr;
GrGLTextureInfo info;
if (GrBackendTextures::GetGLTextureInfo(m_frontBuffer->texture(), &info))
texture = QNativeInterface::QSGOpenGLTexture::fromNative(info.fID, win, size(), texOpts);
return texture;
}
bool DisplaySkiaOutputDevice::textureIsFlipped()
{
return true;
}
QSize DisplaySkiaOutputDevice::size()
{
return m_frontBuffer ? toQt(m_frontBuffer->shape().imageInfo.dimensions()) : QSize();
}
bool DisplaySkiaOutputDevice::requiresAlphaChannel()
{
return m_requiresAlpha;
}
float DisplaySkiaOutputDevice::devicePixelRatio()
{
return m_frontBuffer ? m_frontBuffer->shape().devicePixelRatio : 1;
}
void DisplaySkiaOutputDevice::SwapBuffersFinished()
{
{
QMutexLocker locker(&m_mutex);
std::swap(m_backBuffer, m_middleBuffer);
}
FinishSwapBuffers(gfx::SwapCompletionResult(gfx::SwapResult::SWAP_ACK),
gfx::Size(m_shape.imageInfo.width(), m_shape.imageInfo.height()),
std::move(m_frame));
}
} // namespace QtWebEngineCore
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