public static IReadOnlyList <DXGI_MODE_DESC> GetDisplayModeList(this IDXGIOutput output, DXGI_FORMAT format, DXGI_ENUM_MODES modes)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
// DXGI_FORMAT_R16G16B16A16_FLOAT
// DXGI_FORMAT_R10G10B10A2_UNORM
// DXGI_FORMAT_R8G8B8A8_UNORM
// DXGI_FORMAT_R8G8B8A8_UNORM_SRGB
// DXGI_FORMAT_B8G8R8A8_UNORM
// DXGI_FORMAT_R10G10B10_XR_BIAS_A2_UNORM
// DXGI_FORMAT_B8G8R8A8_UNORM_SRGB
var list = new List <DXGI_MODE_DESC>();
uint num = 0;
output.GetDisplayModeList(format, (uint)modes, ref num, null);
if (num > 0)
{
var array = new DXGI_MODE_DESC[num];
output.GetDisplayModeList(format, (uint)modes, ref num, array);
list.AddRange(array);
}
return(list);
}
/// <summary>
/// Enumerate adapter (video card) outputs.
/// </summary>
/// <param name="outputIndex">The index of the output.</param>
/// <param name="output">The object to an output (see <seealso cref="IDXGIOutput" />).</param>
/// <returns></returns>
public int EnumOutputs(uint outputIndex, out IDXGIOutput output)
{
int result = GetMethodDelegate <EnumOutputsDelegate>().Invoke(this, outputIndex, out IntPtr outputPtr);
output = result == 0 ? new DXGIOutput(outputPtr) : null;
return(result);
}
public static DXGI_OUTPUT_DESC GetDesc(this IDXGIOutput output)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
output.GetDesc(out var desc).ThrowOnError();
return(desc);
}
public IDXGIDecodeSwapChain CreateDecodeSwapChainForCompositionSurfaceHandle(
IUnknown device,
IntPtr surface,
IDXGIResource yuvDecodeBuffers,
IDXGIOutput restrictToOutput)
{
// Reserved for future use (https://docs.microsoft.com/it-it/windows/desktop/api/dxgi1_3/ns-dxgi1_3-dxgi_decode_swap_chain_desc)
var description = new DecodeSwapChainDescription
{
Flags = 0
};
return(CreateDecodeSwapChainForCompositionSurfaceHandle(device, surface, description, yuvDecodeBuffers, restrictToOutput));
}
public static DXGI_FRAME_STATISTICS?GetFrameStatistics(this IDXGIOutput output)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
if (output.GetFrameStatistics(out var stats).IsError)
{
return(null);
}
return(stats);
}
public static DXGI_GAMMA_CONTROL?GetGammaControl(this IDXGIOutput output)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
if (output.GetGammaControl(out var control).IsError)
{
return(null);
}
return(control);
}
public static DXGI_GAMMA_CONTROL_CAPABILITIES?GetGammaControlCapabilities(this IDXGIOutput output)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
if (output.GetGammaControlCapabilities(out var desc).IsError)
{
return(null);
}
return(desc);
}
public static DXGI_MODE_DESC?FindClosestMatchingMode(this IDXGIOutput output, DXGI_MODE_DESC modeToMatch, object concernedDevice)
{
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
if (output.FindClosestMatchingMode(ref modeToMatch, out var closest, ComObject.Unwrap(concernedDevice)).IsError)
{
return(null);
}
return(closest);
}
/// <summary>
/// Initializes a new instance of the <see cref="EngineOutputInfo" /> class.
/// </summary>
internal EngineOutputInfo(int adapterIndex, int outputIndex, IDXGIOutput output)
{
this.AdapterIndex = adapterIndex;
this.OutputIndex = outputIndex;
_outputDescription = output.Description;
// Get all supported modes
var modes = output.GetDisplayModeList(
GraphicsHelper.Internals.DEFAULT_TEXTURE_FORMAT,
DisplayModeEnumerationFlags.Interlaced);
// Convert and sort them
var engineModes = new EngineOutputModeInfo[modes.Length];
for (var loop = 0; loop < engineModes.Length; loop++)
{
engineModes[loop] = new EngineOutputModeInfo(this, modes[loop]);
}
Array.Sort(engineModes, (left, right) =>
{
var result = left.PixelCount.CompareTo(right.PixelCount);
if (result == 0)
{
result = left.RefreshRateNumerator.CompareTo(right.RefreshRateNumerator);
}
return(result);
});
// Strip them (we want to have each relevant mode once)
var strippedModeList = new List <EngineOutputModeInfo>(engineModes.Length);
var lastOutputMode = new EngineOutputModeInfo();
for (var loop = engineModes.Length - 1; loop > -1; loop--)
{
if (!engineModes[loop].Equals(lastOutputMode))
{
lastOutputMode = engineModes[loop];
strippedModeList.Add(lastOutputMode);
}
}
// Store mode list
this.SupportedModes = strippedModeList.ToArray();
}
public IDXGISwapChain1 CreateSwapChainForCompositionSurfaceHandle(IUnknown device, IntPtr surface, SwapChainDescription1 description, IDXGIOutput restrictToOutput)
{
return(CreateSwapChainForCompositionSurfaceHandle(device, surface, ref description, restrictToOutput));
}
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);
}
