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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_WIN_SWAPCHAIN_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_WIN_SWAPCHAIN_H_
#include <d3d11.h>
#include <dcomp.h>
#include <dxgi1_3.h>
#include <wrl/client.h>
#include <memory>
#include "components/viz/service/display_embedder/output_device_backing.h"
#include "components/viz/service/display_embedder/software_output_device_win_base.h"
#include "ui/gl/child_window_win.h"
namespace viz {
// SoftwareOutputDevice implementation in which Skia draws to a DXGI swap chain.
// Using DXGI swap chains guarantees that alpha blending happens correctly and
// consistently with the window behind. SoftwareOutputDeviceWinSwapChain creates
// a trivial dcomp tree that only contains a swap chain. I.e. it is not intended
// to support video overlays or any other feature provided by
// `SkiaOutputDeviceDComp`.
class VIZ_SERVICE_EXPORT SoftwareOutputDeviceWinSwapChain
: public SoftwareOutputDeviceWinBase,
public OutputDeviceBacking::Client {
public:
SoftwareOutputDeviceWinSwapChain(HWND hwnd,
HWND& child_hwnd,
OutputDeviceBacking* backing);
~SoftwareOutputDeviceWinSwapChain() override;
// SoftwareOutputDeviceWinBase implementation.
bool ResizeDelegated(const gfx::Size& viewport_pixel_size) override;
SkCanvas* BeginPaintDelegated() override;
void EndPaintDelegated(const gfx::Rect& rect) override;
void NotifyClientResized() override;
// OutputDeviceBacking::Client implementation.
const gfx::Size& GetViewportPixelSize() const override;
void ReleaseCanvas() override;
bool HasSwapChainForTesting() const { return !!dxgi_swapchain_; }
bool HasDeviceContextForTesting() const { return !!d3d11_device_context_; }
protected:
virtual bool UpdateWindowSize(const gfx::Size& viewport_pixel_size);
private:
raw_ptr<OutputDeviceBacking> const output_backing_;
gl::ChildWindowWin child_window_;
Microsoft::WRL::ComPtr<ID3D11Device> d3d11_device_;
Microsoft::WRL::ComPtr<ID3D11DeviceContext> d3d11_device_context_;
Microsoft::WRL::ComPtr<IDXGISwapChain1> dxgi_swapchain_;
Microsoft::WRL::ComPtr<IDCompositionDevice> dcomp_device_;
Microsoft::WRL::ComPtr<IDCompositionTarget> dcomp_target_;
Microsoft::WRL::ComPtr<IDCompositionVisual> dcomp_root_visual_;
Microsoft::WRL::ComPtr<ID3D11Texture2D> d3d11_staging_texture_;
std::unique_ptr<SkCanvas> sk_canvas_;
};
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_WIN_SWAPCHAIN_H_
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