75 lines
2 KiB
C++
75 lines
2 KiB
C++
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#include <windows.h>
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#include <d3d11.h>
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#pragma comment (lib, "d3d11.lib")
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HINSTANCE g_hInst = NULL;
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D3D_DRIVER_TYPE g_driverType = D3D_DRIVER_TYPE_NULL;
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D3D_FEATURE_LEVEL g_featureLevel = D3D_FEATURE_LEVEL_11_0;
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ID3D11Device* g_pd3dDevice = NULL;
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ID3D11DeviceContext* g_pImmediateContext = NULL;
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IDXGISwapChain* g_pSwapChain = NULL;
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static HRESULT InitDevice()
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{
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HRESULT hr = S_OK;
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UINT width = 640;
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UINT height = 480;
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UINT createDeviceFlags = 0;
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D3D_DRIVER_TYPE driverTypes[] =
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{
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D3D_DRIVER_TYPE_HARDWARE,
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D3D_DRIVER_TYPE_WARP,
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D3D_DRIVER_TYPE_REFERENCE,
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};
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UINT numDriverTypes = ARRAYSIZE(driverTypes);
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D3D_FEATURE_LEVEL featureLevels[] =
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{
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D3D_FEATURE_LEVEL_11_0,
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D3D_FEATURE_LEVEL_10_1,
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D3D_FEATURE_LEVEL_10_0,
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};
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UINT numFeatureLevels = ARRAYSIZE(featureLevels);
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DXGI_SWAP_CHAIN_DESC sd;
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ZeroMemory( &sd, sizeof( sd ) );
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sd.BufferCount = 1;
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sd.BufferDesc.Width = width;
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sd.BufferDesc.Height = height;
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#ifdef CHECK_NV12
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sd.BufferDesc.Format = DXGI_FORMAT_NV12;
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#else
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sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
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#endif
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sd.BufferDesc.RefreshRate.Numerator = 60;
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sd.BufferDesc.RefreshRate.Denominator = 1;
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sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
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sd.OutputWindow = NULL; //g_hWnd;
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sd.SampleDesc.Count = 1;
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sd.SampleDesc.Quality = 0;
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sd.Windowed = TRUE;
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for (UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++)
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{
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g_driverType = driverTypes[driverTypeIndex];
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hr = D3D11CreateDeviceAndSwapChain(NULL, g_driverType, NULL, createDeviceFlags, featureLevels, numFeatureLevels,
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D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext);
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if (SUCCEEDED(hr))
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break;
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}
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if (FAILED(hr))
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return hr;
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return S_OK;
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}
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int main(int /*argc*/, char** /*argv*/)
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{
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InitDevice();
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return 0;
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}
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