for (int i = 0; factory->EnumAdapters(i, &adapter) != DXGI_ERROR_NOT_FOUND; ++i)
{
//创建一个Direct3D 12 设备
result = D3D12CreateDevice(adapter, featureLevel, __uuidof(ID3D12Device), (void**)&m_device);
if (SUCCEEDED(result))
{
break;
}
}
if (FAILED(result))
{
MessageBox(hwnd, L"Could not create a DirectX 12.1 device.The default video card does not support DirectX 12.1", L"DirectX Device Failure", MB_OK);
return false;
}
//枚举主适配器输出
result = adapter->EnumOutputs(0, &adapterOutput);
if (FAILED(result))
{
return false;
}
笔记本电脑有一块集显和一块独显,在第三次调用factory->EnumAdapters返回了ok,但是在下边调用adapter->EnumOutputs时,adapterOutput为NULL,这是为什么?