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// Copyright (C) 2023 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
#ifndef NATIVE_SKIA_OUTPUT_DEVICE_H
#define NATIVE_SKIA_OUTPUT_DEVICE_H
#include "compositor.h"
#include "base/task/single_thread_task_runner.h"
#include "components/viz/service/display_embedder/skia_output_device.h"
#include "gpu/command_buffer/service/shared_context_state.h"
#include "gpu/command_buffer/service/shared_image/shared_image_representation.h"
#include "gpu/config/gpu_preferences.h"
#include <QMutex>
#if defined(Q_OS_WIN)
#include "ui/gl/dc_layer_overlay_image.h"
#endif
#if defined(Q_OS_MACOS)
#include "ui/gfx/mac/io_surface.h"
#endif
QT_BEGIN_NAMESPACE
class QQuickWindow;
QT_END_NAMESPACE
namespace gl {
class GLFence;
}
namespace gfx {
class GpuFence;
class NativePixmap;
}
namespace gpu {
class SharedImageFactory;
class SharedImageRepresentationFactory;
}
namespace viz {
class SkiaOutputSurfaceDependency;
}
namespace QtWebEngineCore {
class NativeSkiaOutputDevice : public viz::SkiaOutputDevice, public Compositor
{
public:
NativeSkiaOutputDevice(scoped_refptr<gpu::SharedContextState> contextState,
bool requiresAlpha,
gpu::MemoryTracker *memoryTracker,
viz::SkiaOutputSurfaceDependency *dependency,
gpu::SharedImageFactory *shared_image_factory,
gpu::SharedImageRepresentationFactory *shared_image_representation_factory,
DidSwapBufferCompleteCallback didSwapBufferCompleteCallback);
~NativeSkiaOutputDevice() override;
// Overridden from SkiaOutputDevice.
void SetFrameSinkId(const viz::FrameSinkId &frame_sink_id) override;
bool Reshape(const SkImageInfo &image_info,
const gfx::ColorSpace &color_space,
int sample_count,
float device_scale_factor,
gfx::OverlayTransform transform) override;
void Present(const absl::optional<gfx::Rect>& update_rect,
BufferPresentedCallback feedback,
viz::OutputSurfaceFrame frame) override;
void EnsureBackbuffer() override;
void DiscardBackbuffer() override;
SkSurface *BeginPaint(std::vector<GrBackendSemaphore> *semaphores) override;
void EndPaint() override;
// Overridden from Compositor.
void swapFrame() override;
void waitForTexture() override;
void releaseTexture() override;
void releaseResources() override;
bool textureIsFlipped() override;
QSize size() override;
bool requiresAlphaChannel() override;
float devicePixelRatio() override;
protected:
struct Shape
{
SkImageInfo imageInfo;
float devicePixelRatio;
gfx::ColorSpace colorSpace;
int sampleCount;
bool operator==(const Shape &that) const
{
return (imageInfo == that.imageInfo &&
devicePixelRatio == that.devicePixelRatio &&
colorSpace == that.colorSpace &&
sampleCount == that.sampleCount);
}
bool operator!=(const Shape &that) const { return !(*this == that); }
};
class Buffer
{
public:
Buffer(NativeSkiaOutputDevice *parent);
~Buffer();
bool initialize();
SkSurface *beginWriteSkia();
void endWriteSkia(bool force_flush);
std::vector<GrBackendSemaphore> takeEndWriteSkiaSemaphores();
void beginPresent();
void endPresent();
void freeTexture();
void createFence();
void consumeFence();
sk_sp<SkImage> skImage();
#if defined(USE_OZONE)
scoped_refptr<gfx::NativePixmap> nativePixmap();
#elif defined(Q_OS_WIN)
absl::optional<gl::DCLayerOverlayImage> overlayImage() const;
#elif defined(Q_OS_MACOS)
gfx::ScopedIOSurface ioSurface() const;
#endif
const Shape &shape() const { return m_shape; }
viz::SharedImageFormat sharedImageFormat() const { return m_skiaRepresentation->format(); }
std::function<void()> textureCleanupCallback;
private:
void createSkImageOnGPUThread();
NativeSkiaOutputDevice *m_parent;
Shape m_shape;
uint64_t m_estimatedSize = 0; // FIXME: estimate size
std::unique_ptr<gfx::GpuFence> m_acquireFence;
std::unique_ptr<gl::GLFence> m_fence;
gpu::Mailbox m_mailbox;
std::unique_ptr<gpu::SkiaImageRepresentation> m_skiaRepresentation;
std::unique_ptr<gpu::SkiaImageRepresentation::ScopedWriteAccess> m_scopedSkiaWriteAccess;
std::unique_ptr<gpu::SkiaImageRepresentation::ScopedReadAccess> m_scopedSkiaReadAccess;
std::unique_ptr<gpu::OverlayImageRepresentation> m_overlayRepresentation;
std::unique_ptr<gpu::OverlayImageRepresentation::ScopedReadAccess>
m_scopedOverlayReadAccess;
std::vector<GrBackendSemaphore> m_endSemaphores;
int m_presentCount = 0;
mutable QMutex m_skImageMutex;
sk_sp<SkImage> m_cachedSkImage;
};
protected:
scoped_refptr<gpu::SharedContextState> m_contextState;
std::unique_ptr<Buffer> m_frontBuffer;
bool m_readyWithTexture = false;
bool m_isNativeBufferSupported = true;
private:
friend class NativeSkiaOutputDevice::Buffer;
void SwapBuffersFinished();
mutable QMutex m_mutex;
Shape m_shape;
std::unique_ptr<Buffer> m_middleBuffer;
std::unique_ptr<Buffer> m_backBuffer;
viz::OutputSurfaceFrame m_frame;
bool m_readyToUpdate = false;
bool m_requiresAlpha;
scoped_refptr<base::SingleThreadTaskRunner> m_gpuTaskRunner;
const raw_ptr<gpu::SharedImageFactory> m_factory;
const raw_ptr<gpu::SharedImageRepresentationFactory> m_representationFactory;
const raw_ptr<viz::SkiaOutputSurfaceDependency> m_deps;
};
} // namespace QtWebEngineCore
#endif // !NATIVE_SKIA_OUTPUT_DEVICE_H
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