public static DXGI_OUTDUPL_DESC GetDesc(this IDXGIOutputDuplication duplication)
{
if (duplication == null)
{
throw new ArgumentNullException(nameof(duplication));
}
#pragma warning disable CA2010 // Always consume the value returned by methods marked with PreserveSigAttribute
duplication.GetDesc(out var desc);
#pragma warning restore CA2010 // Always consume the value returned by methods marked with PreserveSigAttribute
return(desc);
}
public static DXGI_OUTDUPL_DESC GetDesc(this IDXGIOutputDuplication duplication)
{
if (duplication == null)
{
throw new ArgumentNullException(nameof(duplication));
}
var desc = new DXGI_OUTDUPL_DESC();
duplication.GetDesc(out desc);
return(desc);
}
private void StartDesktopDuplicator(int adapterId, int outputId)
{
var adapter = factory.GetAdapter1(adapterId);
D3D11.D3D11CreateDevice(adapter, DriverType.Unknown, DeviceCreationFlags.None, s_featureLevels, out device);
var output = adapter.GetOutput(outputId);
var output1 = output.QueryInterface <IDXGIOutput1>();
var bounds = output1.Description.DesktopCoordinates;
var width = bounds.Right - bounds.Left;
var height = bounds.Bottom - bounds.Top;
var textureDesc = new Texture2DDescription
{
CpuAccessFlags = CpuAccessFlags.Read,
BindFlags = BindFlags.None,
Format = Format.B8G8R8A8_UNorm,
Width = width / 2,
Height = height / 2,
OptionFlags = ResourceOptionFlags.None,
MipLevels = 1,
ArraySize = 1,
SampleDescription = { Count = 1, Quality = 0 },
Usage = Usage.Staging
};
stagingTexture = device.CreateTexture2D(textureDesc);
var smallerTextureDesc = new Texture2DDescription
{
CpuAccessFlags = CpuAccessFlags.None,
BindFlags = BindFlags.RenderTarget | BindFlags.ShaderResource,
Format = Format.B8G8R8A8_UNorm,
Width = width,
Height = height,
OptionFlags = ResourceOptionFlags.GenerateMips,
MipLevels = 4,
ArraySize = 1,
SampleDescription = { Count = 1, Quality = 0 },
Usage = Usage.Default
};
smallerTexture = device.CreateTexture2D(smallerTextureDesc);
smallerTextureView = device.CreateShaderResourceView(smallerTexture);
duplication = output1.DuplicateOutput(device);
}
