1 #include <windows.h> 2 3 #include <d3d11.h> 4 #pragma comment (lib, "d3d11.lib") 5 6 HINSTANCE g_hInst = NULL; 7 D3D_DRIVER_TYPE g_driverType = D3D_DRIVER_TYPE_NULL; 8 D3D_FEATURE_LEVEL g_featureLevel = D3D_FEATURE_LEVEL_11_0; 9 ID3D11Device* g_pd3dDevice = NULL; 10 ID3D11DeviceContext* g_pImmediateContext = NULL; 11 IDXGISwapChain* g_pSwapChain = NULL; 12 13 static HRESULT InitDevice() 14 { 15 HRESULT hr = S_OK; 16 17 UINT width = 640; 18 UINT height = 480; 19 20 UINT createDeviceFlags = 0; 21 22 D3D_DRIVER_TYPE driverTypes[] = 23 { 24 D3D_DRIVER_TYPE_HARDWARE, 25 D3D_DRIVER_TYPE_WARP, 26 D3D_DRIVER_TYPE_REFERENCE, 27 }; 28 UINT numDriverTypes = ARRAYSIZE(driverTypes); 29 30 D3D_FEATURE_LEVEL featureLevels[] = 31 { 32 D3D_FEATURE_LEVEL_11_0, 33 D3D_FEATURE_LEVEL_10_1, 34 D3D_FEATURE_LEVEL_10_0, 35 }; 36 UINT numFeatureLevels = ARRAYSIZE(featureLevels); 37 38 DXGI_SWAP_CHAIN_DESC sd; 39 ZeroMemory( &sd, sizeof( sd ) ); 40 sd.BufferCount = 1; 41 sd.BufferDesc.Width = width; 42 sd.BufferDesc.Height = height; 43 sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; 44 sd.BufferDesc.RefreshRate.Numerator = 60; 45 sd.BufferDesc.RefreshRate.Denominator = 1; 46 sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT; 47 sd.OutputWindow = NULL; //g_hWnd; 48 sd.SampleDesc.Count = 1; 49 sd.SampleDesc.Quality = 0; 50 sd.Windowed = TRUE; 51 52 for (UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++) 53 { 54 g_driverType = driverTypes[driverTypeIndex]; 55 hr = D3D11CreateDeviceAndSwapChain(NULL, g_driverType, NULL, createDeviceFlags, featureLevels, numFeatureLevels, 56 D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext); 57 if (SUCCEEDED(hr)) 58 break; 59 } 60 if (FAILED(hr)) 61 return hr; 62 63 return S_OK; 64 } 65 66 int main(int /*argc*/, char** /*argv*/) 67 { 68 InitDevice(); 69 return 0; 70 } 71
