DirectX11動作確認用

#pragma comment(lib,"d3d11.lib")
#include <d3d11.h>

D3D_DRIVER_TYPE         g_driverType;
D3D_FEATURE_LEVEL       g_featureLevel;
ID3D11Device*           g_pd3dDevice = nullptr;
ID3D11DeviceContext*    g_pImmediateContext = nullptr;

HRESULT InitDevice()
{
	HRESULT hr = S_OK;
	UINT createDeviceFlags = 0;

	D3D_DRIVER_TYPE driverTypes[] =
	{
		D3D_DRIVER_TYPE_HARDWARE,
		D3D_DRIVER_TYPE_WARP,
		D3D_DRIVER_TYPE_REFERENCE,
	};
	UINT numDriverTypes = ARRAYSIZE(driverTypes);

	D3D_FEATURE_LEVEL featureLevels[] =
	{
		D3D_FEATURE_LEVEL_11_0,
	};
	UINT numFeatureLevels = ARRAYSIZE(featureLevels);

	for (UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++)
	{
		g_driverType = driverTypes[driverTypeIndex];
		hr = D3D11CreateDevice(nullptr, g_driverType, nullptr, createDeviceFlags, featureLevels, numFeatureLevels,
			D3D11_SDK_VERSION, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext);

		if (SUCCEEDED(hr))
			break;
	}

	return hr;
}

void main()
{
	InitDevice();
	return;
}