3ded5bdcdf
With Windows backend selection fixed to Direct3D, LibGfx needs a native GPU context that can feed Skia directly. Add a Direct3DContext helper that owns the DXGI adapter, D3D12 device, and direct command queue, then pass that state to Skia through GrDirectContext::MakeDirect3D..
105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
/*
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* Copyright (c) 2026, the Ladybird developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Error.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/RefPtr.h>
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#include <LibGfx/Direct3DContext.h>
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#ifdef USE_DIRECTX
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# include <AK/Windows.h>
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# include <d3d12.h>
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# include <dxgi1_4.h>
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// NOTE: Not using the newer winrt that supersedes wrl as that uses exceptions for error handling.
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# include <wrl/client.h>
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namespace Gfx {
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using namespace Microsoft::WRL;
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struct Direct3DContext::Impl {
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Impl(ComPtr<IDXGIAdapter1> adapter, ComPtr<ID3D12Device> device, ComPtr<ID3D12CommandQueue> queue)
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: adapter(move(adapter))
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, device(move(device))
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, queue(move(queue))
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{
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}
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ComPtr<IDXGIAdapter1> adapter;
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ComPtr<ID3D12Device> device;
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ComPtr<ID3D12CommandQueue> queue;
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};
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Direct3DContext::Direct3DContext(NonnullOwnPtr<Impl> impl)
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: m_impl(move(impl))
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{
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}
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Direct3DContext::~Direct3DContext() = default;
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IDXGIAdapter1* Direct3DContext::adapter() const
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{
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return m_impl->adapter.Get();
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}
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ID3D12Device* Direct3DContext::device() const
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{
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return m_impl->device.Get();
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}
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ID3D12CommandQueue* Direct3DContext::queue() const
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{
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return m_impl->queue.Get();
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}
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static ErrorOr<ComPtr<IDXGIAdapter1>> get_hardware_adapter(IDXGIFactory4& factory)
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{
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for (UINT adapter_index = 0;; ++adapter_index) {
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ComPtr<IDXGIAdapter1> adapter;
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auto hr = factory.EnumAdapters1(adapter_index, &adapter);
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if (hr == DXGI_ERROR_NOT_FOUND)
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break;
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if (FAILED(hr))
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return Error::from_windows_error(hr);
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if (SUCCEEDED(D3D12CreateDevice(adapter.Get(), D3D_FEATURE_LEVEL_11_0, __uuidof(ID3D12Device), nullptr)))
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return move(adapter);
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}
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return Error::from_string_literal("No Direct3D 12 adapter found");
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}
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ErrorOr<NonnullRefPtr<Direct3DContext>> create_direct3d_context()
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{
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ComPtr<IDXGIFactory4> factory;
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auto hr = CreateDXGIFactory1(IID_PPV_ARGS(&factory));
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if (FAILED(hr))
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return Error::from_windows_error(hr);
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auto adapter = TRY(get_hardware_adapter(*factory.Get()));
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ComPtr<ID3D12Device> device;
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hr = D3D12CreateDevice(adapter.Get(), D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&device));
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if (FAILED(hr))
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return Error::from_windows_error(hr);
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D3D12_COMMAND_QUEUE_DESC queue_description {};
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queue_description.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
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queue_description.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
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ComPtr<ID3D12CommandQueue> queue;
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hr = device->CreateCommandQueue(&queue_description, IID_PPV_ARGS(&queue));
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if (FAILED(hr))
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return Error::from_windows_error(hr);
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return adopt_ref(*new Direct3DContext(make<Direct3DContext::Impl>(move(adapter), move(device), move(queue))));
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}
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}
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#endif
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