hwcontext_d3d11: Log adapter details on device creation

This is helpful to know what device has actually been used.

libavutil/hwcontext_d3d11va.c

@@ -515,8 +515,15 @@ static int d3d11va_device_create(AVHWDeviceContext *ctx, const char *device,
 
     hr = mD3D11CreateDevice(pAdapter, pAdapter ? D3D_DRIVER_TYPE_UNKNOWN : D3D_DRIVER_TYPE_HARDWARE, NULL, creationFlags, NULL, 0,
                    D3D11_SDK_VERSION, &device_hwctx->device, NULL, NULL);
-    if (pAdapter)
+    if (pAdapter) {
+        DXGI_ADAPTER_DESC2 desc;
+        hr = IDXGIAdapter2_GetDesc(pAdapter, &desc);
+        if (!FAILED(hr)) {
+            av_log(ctx, AV_LOG_INFO, "Using device %04x:%04x (%ls).\n",
+                   desc.VendorId, desc.DeviceId, desc.Description);
+        }
         IDXGIAdapter_Release(pAdapter);
+    }
     if (FAILED(hr)) {
         av_log(ctx, AV_LOG_ERROR, "Failed to create Direct3D device (%lx)\n", (long)hr);
         return AVERROR_UNKNOWN;