cmake: detect Direct 3D 11

CMakeLists.txt

@@ -155,6 +155,7 @@ OCV_OPTION(WITH_CLP            "Include Clp support (EPL)"                   OFF
 OCV_OPTION(WITH_OPENCL         "Include OpenCL Runtime support"              ON   IF (NOT IOS) )
 OCV_OPTION(WITH_OPENCLAMDFFT   "Include AMD OpenCL FFT library support"      ON   IF (NOT ANDROID AND NOT IOS) )
 OCV_OPTION(WITH_OPENCLAMDBLAS  "Include AMD OpenCL BLAS library support"     ON   IF (NOT ANDROID AND NOT IOS) )
+OCV_OPTION(WITH_DIRECTX        "Include DirectX support"                     ON   IF WIN32 )
 
 
 # OpenCV build components
@@ -428,6 +429,11 @@ if(WITH_OPENCL)
   include(cmake/OpenCVDetectOpenCL.cmake)
 endif()
 
+# --- DirectX ---
+if(WITH_DIRECTX)
+  include(cmake/OpenCVDetectDirectX.cmake)
+endif()
+
 # --- Matlab/Octave ---
 include(cmake/OpenCVFindMatlab.cmake)
 

cmake/OpenCVDetectDirectX.cmake

+if(WIN32)
+  try_compile(__VALID_DIRECTX
+    "${OpenCV_BINARY_DIR}"
+    "${OpenCV_SOURCE_DIR}/cmake/checks/directx.cpp"
+    OUTPUT_VARIABLE TRY_OUT
+  )
+  if(NOT __VALID_DIRECTX)
+    return()
+  endif()
+  set(HAVE_DIRECTX ON)
+  set(HAVE_D3D11 ON)
+  set(HAVE_D3D10 ON)
+  set(HAVE_D3D9 ON)
+endif()

cmake/checks/directx.cpp

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

cmake/templates/cvconfig.h.in

@@ -55,6 +55,12 @@
 /* IEEE1394 capturing support - libdc1394 v2.x */
 #cmakedefine HAVE_DC1394_2
 
+/* DirectX */
+#cmakedefine HAVE_DIRECTX
+#cmakedefine HAVE_D3D11
+#cmakedefine HAVE_D3D10
+#cmakedefine HAVE_D3D9
+
 /* DirectShow Video Capture library */
 #cmakedefine HAVE_DSHOW