DuplicateOutput DXGI Custom Output Resolution

Question

I use AcquireNextFrameto take a screenshot of my desktop. Can I set the dimension of the output image that I want to set? I saw this feature in the documentation IDXGIOutput::SetDisplaySurfacethat could help. Here is my code:

//Here I init a output texture with less resolution 
    D3D11_TEXTURE2D_DESC desc;
    desc.Width = 1280;
    desc.Height = 720;
    desc.MipLevels = desc.ArraySize = 1;
    desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    desc.SampleDesc.Count = 1;
    desc.Usage = D3D11_USAGE_DYNAMIC;
    desc.BindFlags = 0;
    desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
    desc.MiscFlags = 0;

    ID3D11Texture2D *pTexture = NULL;
    gDevice->CreateTexture2D(&desc, NULL, &pTexture);
    IDXGISurface *surface = nullptr;
    hr = gDevice->QueryInterface(__uuidof(IDXGISurface), reinterpret_cast<void **>(&pTexture));
    if (FAILED(hr))
        return;
    // Here I should make lDxgiOutput->setDisplaySurface(surface)
    hr = lDxgiOutput->GetDesc(&gOutputDesc);
    if (FAILED(hr))
        return;
    IDXGIOutput1 *lDxgiOutput1 = nullptr;
    hr = lDxgiOutput->QueryInterface(IID_PPV_ARGS(&lDxgiOutput1));
    if (FAILED(hr))
        return;
    lDxgiOutput->Release();
    hr = lDxgiOutput1->DuplicateOutput(gDevice, &gDeskDupl);
    if (FAILED(hr))
        return;

My screen is 1920x1080, and I would like to get an image at 1280x720, for example. I get an error in a function queryinterface. Can someone tell me what I am missing? Or is there a solution that makes setting resolution easier? Thanks

Answer 1

Desktop Duplication API . , . , , Desktop Duplication .

( ):

• DXGI Texture2D SharpDX

, Media Foundation Video Processor MFT, , , -, Media Foundation , Direct3D 11 .

. API GPU:

• DXVA - 7: