Initial directx example.

src/windows/ui_interfaces/win32/Win32DxWindowInterface.h

@@ -0,0 +1,87 @@
+#pragma once
+
+#include <memory>
+
+#include <wrl.h>
+#include <d3d12.h>
+#include <directxmath.h>
+#include <directx/d3dx12.h>
+
+class Win32DxInterface;
+namespace mt
+{
+    class Window;
+}
+
+struct ID3D12CommandQueue;
+struct ID3D12CommandAllocator;
+struct ID3D12GraphicsCommandList;
+struct IDXGISwapChain4;
+struct ID3D12DescriptorHeap;
+struct ID3D12Resource;
+struct ID3D12Fence;
+struct ID3D12RootSignature;
+struct ID3D12PipelineState;
+
+class Win32DxWindowInterface
+{
+public:
+    Win32DxWindowInterface(Win32DxInterface* dxInterface);
+
+    ~Win32DxWindowInterface();
+
+    bool initialize(mt::Window* window);
+
+    void onRender();
+
+    //void afterPaint();
+
+    //void resizeViewPort(unsigned width, unsigned height);
+
+private:
+    void loadPipeline(mt::Window* window);
+    void loadAssets();
+
+    void populateCommandList();
+    void waitForPreviousFrame();
+    void destroyWindow();
+
+    static const UINT FrameCount = 2;
+    Win32DxInterface* mDxInterface{ nullptr };
+    bool mInitialized{ false };
+
+    struct Vertex
+    {
+        DirectX::XMFLOAT3 position;
+        DirectX::XMFLOAT4 color;
+    };
+
+    CD3DX12_VIEWPORT mViewport;
+    CD3DX12_RECT mScissorRect;
+
+    Microsoft::WRL::ComPtr<ID3D12CommandQueue> mCommandQueue;
+    Microsoft::WRL::ComPtr<ID3D12CommandAllocator> mCommandAllocator;
+    Microsoft::WRL::ComPtr<ID3D12GraphicsCommandList> mCommandList;
+
+    Microsoft::WRL::ComPtr<IDXGISwapChain4> mSwapChain;
+
+    Microsoft::WRL::ComPtr<ID3D12RootSignature> mRootSignature;
+    Microsoft::WRL::ComPtr<ID3D12PipelineState> mPipelineState;
+
+    Microsoft::WRL::ComPtr<ID3D12DescriptorHeap> mRtvHeap;
+    UINT mRtvDescriptorSize{ 0 };
+
+    Microsoft::WRL::ComPtr<ID3D12Resource> mRenderTargets[FrameCount];
+
+    Microsoft::WRL::ComPtr<ID3D12Resource> mVertexBuffer;
+    D3D12_VERTEX_BUFFER_VIEW mVertexBufferView{};
+
+    Microsoft::WRL::ComPtr<ID3D12Fence> mFence;
+    uint64_t mFenceValue = 0;
+    uint64_t mFrameFenceValues[FrameCount] = {};
+    HANDLE mFenceEvent{};
+
+    uint64_t mFrameIndex{ 0 };
+};
+
+using XcbGlWindowInterfacePtr = std::unique_ptr<Win32DxWindowInterface>;