/// <summary>
/// Initializes a new instance of the <see cref="EngineAdapterInfo" /> class.
/// </summary>
internal EngineAdapterInfo(int adapterIndex, IDXGIAdapter1 adapter)
{
this.Outputs = new List <EngineOutputInfo>();
this.AdapterIndex = adapterIndex;
_adapterDescription = adapter.Description;
this.IsSoftwareAdapter =
_adapterDescription.Description == "Microsoft Basic Render Driver" ||
!string.IsNullOrEmpty(_adapterDescription.Description) && _adapterDescription.Description.Contains("Software") ||
!string.IsNullOrEmpty(_adapterDescription.Description) && _adapterDescription.Description.Contains("Microsoft Basic Render Driver");
_d3d11FeatureLevel = D3D11.D3D11.GetSupportedFeatureLevel(adapter);
//Query for output information
var lastResult = Result.Ok;
var actIndex = 0;
do
{
lastResult = adapter.EnumOutputs(actIndex, out var actOutput);
if (lastResult.Success)
{
this.Outputs.Add(new EngineOutputInfo(adapterIndex, actIndex, actOutput));
}
actIndex++;
}while (lastResult.Success);
}
public static int Main()
{
int result;
using (IDXGIFactory1 factory1 = new DXGIFactory1())
{
LinkedList <IDXGIAdapter1> adapters = new LinkedList <IDXGIAdapter1>();
uint adapterId = 0;
while ((result = factory1.EnumAdapters1(adapterId, out IDXGIAdapter1 currentAdapter)) == 0)
{
adapterId++;
result = currentAdapter.GetDesc1(out DXGIAdapterDescription1 adapterDescription);
if (result != 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(1);
}
if ((adapterDescription.Flags & DXGIAdapterFlag.Software) != 0)
{
currentAdapter.Dispose();
continue;
}
adapters.AddLast(currentAdapter);
}
if (adapters.Count == 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(2);
}
FeatureLevel[] featureLevels =
{
FeatureLevel.Level_12_1,
FeatureLevel.Level_12_0,
FeatureLevel.Level_11_1,
FeatureLevel.Level_11_0,
FeatureLevel.Level_10_1,
FeatureLevel.Level_10_0,
FeatureLevel.Level_9_3,
FeatureLevel.Level_9_2,
FeatureLevel.Level_9_1
};
result = DXGINativeMethods.D3D11CreateDevice
(
adapters.First.Value,
DriverType.Unknown,
IntPtr.Zero,
0x2,
featureLevels,
7u,
out IUnknown d3d11Device,
out FeatureLevel selectedLevel,
out IUnknown d3d11DeviceContext
);
if (result != 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(3);
}
using (d3d11Device)
{
using (IDXGIAdapter1 adapter = adapters.First.Value)
{
using (d3d11DeviceContext)
{
result = adapter.EnumOutputs(0, out IDXGIOutput output);
if (result != 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(4);
}
using (output)
{
result = output.QueryInterface(typeof(IDXGIOutput1).GUID, out IntPtr output1Ptr);
if (result != 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(5);
}
using (IDXGIOutput1 output1 = new DXGIOutput1(output1Ptr))
{
result = output1.DuplicateOutput(d3d11Device,
out IDXGIOutputDuplication duplicationOutput);
if (result != 0)
{
foreach (IDXGIAdapter1 dxgiAdapter1 in adapters)
{
dxgiAdapter1.Dispose();
}
return(6);
}
duplicationOutput.GetDesc(out DXGIOutDuplDescription duplDescription);
duplicationOutput.ReleaseFrame();
duplicationOutput.Dispose();
}
}
}
}
}
}
return(result);
}
public static DesktopDuplicatorInternal CreateDesktopDuplicator(ILogger logger, int adapterIndex, int outputDeviceIndex)
{
var dd = new DesktopDuplicatorInternal
{
_outputDeviceIndex = outputDeviceIndex
};
var createFactoryResult = DXGI.CreateDXGIFactory1(out IDXGIFactory1 factory);
if (!createFactoryResult.Success)
{
throw new DesktopDuplicationException("Couldn't create a DXGI Factory.");
}
IDXGIAdapter1 adapter = null;
IDXGIOutput output = null;
try
{
var result = factory.EnumAdapters1(adapterIndex, out adapter);
if (result.Failure)
{
throw new DesktopDuplicationException($"An error occurred attempting to retrieve the adapter at the specified index ({adapterIndex}): {result}");
}
if (adapter == null)
{
throw new DesktopDuplicationException($"An adapter was not found at the specified index ({adapterIndex}).");
}
logger.LogInformation($"Using adapter at index {adapterIndex} - {adapter.Description.Description}");
var createD3dDeviceResult = D3D11.D3D11CreateDevice(adapter, DriverType.Unknown, DeviceCreationFlags.None, null, out dd._d3dDevice, out dd._immediateContext);
if (!createD3dDeviceResult.Success)
{
throw new DesktopDuplicationException("Couldn't create a D3D device from the specified adapter.");
}
using var device = dd._d3dDevice.QueryInterface <IDXGIDevice>();
var outputResult = adapter.EnumOutputs(outputDeviceIndex, out output);
if (outputResult.Failure)
{
throw new DesktopDuplicationException($"An error occurred attempting to retrieve the output device at the specified index ({outputDeviceIndex}): {outputResult}");
}
if (output == null)
{
throw new DesktopDuplicationException($"An output was not found at the specified index ({outputDeviceIndex}).");
}
logger.LogInformation($"Using output device on adapter {adapterIndex} at index {outputDeviceIndex}.");
var output6 = output.QueryInterface <IDXGIOutput6>();
try
{
// Copy the values to a new rect.
var rectTemp = output6.Description.DesktopCoordinates;
dd._desktopRect = new RawRect(rectTemp.Left, rectTemp.Top, rectTemp.Right, rectTemp.Bottom);
dd._outputDuplication = output6.DuplicateOutput(device);
var stagingTexture = new Texture2DDescription()
{
CpuAccessFlags = CpuAccessFlags.Read,
BindFlags = BindFlags.None,
Format = dd._outputDuplication.Description.ModeDescription.Format,
Width = Math.Abs(dd._desktopRect.Right - dd._desktopRect.Left),
Height = Math.Abs(dd._desktopRect.Bottom - dd._desktopRect.Top),
OptionFlags = ResourceOptionFlags.None,
MipLevels = 1,
ArraySize = 1,
SampleDescription = { Count = 1, Quality = 0 },
Usage = Usage.Staging // << can be read by CPU
};
// Initialize the Output Duplication -- If this isn't done occassionally an 'Unsupported' result will occur with DuplicationOutput1
dd._desktopImageTexture = dd._d3dDevice.CreateTexture2D(stagingTexture);
}
catch (SharpGenException ex)
{
if (ex.Descriptor.NativeApiCode == "DXGI_ERROR_UNSUPPORTED")
{
throw new DesktopDuplicationException("Unsupported desktop mode or scenario.");
}
else if (ex.Descriptor.NativeApiCode == "DXGI_ERROR_NOT_CURRENTLY_AVAILABLE")
{
throw new DesktopDuplicationException("There is already the maximum number of applications using the Desktop Duplication API running, please close one of the applications and try again.");
}
else
{
throw;
}
}
}
finally
{
if (output != null)
{
output.Dispose();
}
if (adapter != null)
{
adapter.Dispose();
}
if (factory != null)
{
factory.Dispose();
}
}
return(dd);
}
