Add Directx11 class implementation

src/GUI/DirectX11.cpp

@@ -0,0 +1,83 @@
+#include "DirectX11.hpp"
+#include <stdexcept>
+
+namespace Xash::GUI
+{
+	// PUBLIC METHODS
+
+	void DirectX11::Init(HWND hwnd)
+	{
+		DXGI_SWAP_CHAIN_DESC swapChainDesc = CreateSwapChainDesc(hwnd);
+		CreateDevice(swapChainDesc);
+		InitRenderTargets();
+	}
+
+	void DirectX11::Display()
+	{
+		// Vsync enabled
+		mDx11SwapChain->Present(1, 0);
+	}
+
+	void DirectX11::Clear()
+	{
+		constexpr float clearColor[] = {0.0F, 0.0F, 0.0F, 1.0F};
+
+		mDx11DeviceContext->OMSetRenderTargets(
+			1U, mDx11RenderTargetView.GetAddressOf(), nullptr
+		);
+		mDx11DeviceContext->ClearRenderTargetView(
+			mDx11RenderTargetView.Get(), clearColor
+		);
+	}
+
+	// PRIVATE METHODS
+
+	void DirectX11::CreateDevice(DXGI_SWAP_CHAIN_DESC swapChainDesc)
+	{
+		UINT createDeviceFlags = 0;
+		UINT featureLevelCount = 1;
+		D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
+		const D3D_FEATURE_LEVEL featureLevels[] = {featureLevel};
+
+		HRESULT result = D3D11CreateDeviceAndSwapChain(
+			nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, createDeviceFlags, featureLevels,
+			featureLevelCount, D3D11_SDK_VERSION, &swapChainDesc, &mDx11SwapChain,
+			&mDx11Device, nullptr, &mDx11DeviceContext
+		);
+		if (result != S_OK)
+		{
+			throw std::runtime_error("Failed to create dx11 device");
+		}
+	}
+
+	DXGI_SWAP_CHAIN_DESC DirectX11::CreateSwapChainDesc(HWND hwnd)
+	{
+		DXGI_SWAP_CHAIN_DESC swapChainDesc = {0};
+		swapChainDesc.BufferCount = 2;
+		swapChainDesc.BufferDesc.Width = 0;
+		swapChainDesc.BufferDesc.Height = 0;
+		swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+		swapChainDesc.BufferDesc.RefreshRate.Numerator = 60;
+		swapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
+		swapChainDesc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+		swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+		swapChainDesc.OutputWindow = hwnd;
+		swapChainDesc.SampleDesc.Count = 1;
+		swapChainDesc.SampleDesc.Quality = 0;
+		swapChainDesc.Windowed = TRUE;
+		swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+		return swapChainDesc;
+	}
+
+	void DirectX11::InitRenderTargets()
+	{
+		ID3D11Texture2D *backBuffer;
+
+		mDx11SwapChain->GetBuffer(0, IID_PPV_ARGS(&backBuffer));
+		mDx11Device->CreateRenderTargetView(
+			backBuffer, nullptr, mDx11RenderTargetView.GetAddressOf()
+		);
+		backBuffer->Release();
+	}
+
+} // namespace Xash::GUI

src/GUI/DirectX11.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <windows.h>
+#include <d3d11.h>
+#include <wrl/client.h>
+
+namespace Xash::GUI
+{
+	class DirectX11
+	{
+	public:
+		DirectX11() = default;
+
+		void Init(HWND hwnd);
+		void Display();
+		void Clear();
+
+	private:
+		void InitRenderTargets();
+		void CreateDevice(DXGI_SWAP_CHAIN_DESC swapChainDesc);
+		DXGI_SWAP_CHAIN_DESC CreateSwapChainDesc(HWND hwnd);
+
+		Microsoft::WRL::ComPtr<ID3D11Device> mDx11Device;
+		Microsoft::WRL::ComPtr<ID3D11DeviceContext> mDx11DeviceContext;
+		Microsoft::WRL::ComPtr<IDXGISwapChain> mDx11SwapChain;
+		Microsoft::WRL::ComPtr<ID3D11RenderTargetView> mDx11RenderTargetView;
+	};
+} // namespace Xash::GUI