public void PresentSurface(IDirect3DSurface surface)
{
using (var sourceTexture = Direct3D11Helpers.CreateSharpDXTexture2D(surface))
{
if (!_isSwapChainSized)
{
var description = sourceTexture.Description;
_swapChain.ResizeBuffers(
2,
description.Width,
description.Height,
SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SharpDX.DXGI.SwapChainFlags.None);
_isSwapChainSized = true;
}
using (var backBuffer = _swapChain.GetBackBuffer <SharpDX.Direct3D11.Texture2D>(0))
using (var renderTargetView = new SharpDX.Direct3D11.RenderTargetView(_d3dDevice, backBuffer))
{
_d3dDevice.ImmediateContext.ClearRenderTargetView(renderTargetView, new SharpDX.Mathematics.Interop.RawColor4(0, 0, 0, 1));
_d3dDevice.ImmediateContext.CopyResource(sourceTexture, backBuffer);
}
}
_swapChain.Present(1, SharpDX.DXGI.PresentFlags.None);
}
public Encoder(IDirect3DDevice device, GraphicsCaptureItem item)
{
_device = device;
_d3dDevice = Direct3D11Helpers.CreateSharpDXDevice(device);
_captureItem = item;
_isRecording = false;
_previewLock = new object();
CreateMediaObjects();
}
public CaptureFrameWait(
IDirect3DDevice device,
GraphicsCaptureItem item,
SizeInt32 size)
{
_device = device;
_d3dDevice = Direct3D11Helpers.CreateSharpDXDevice(device);
_multithread = _d3dDevice.QueryInterface <SharpDX.Direct3D11.Multithread>();
_multithread.SetMultithreadProtected(true);
_item = item;
_frameEvent = new ManualResetEvent(false);
_closedEvent = new ManualResetEvent(false);
_events = new[] { _closedEvent, _frameEvent };
InitializeBlankTexture(size);
InitializeCapture(size);
}
public SurfaceWithInfo WaitForNewFrame()
{
// Let's get a fresh one.
_currentFrame?.Dispose();
_frameEvent.Reset();
var signaledEvent = _events[WaitHandle.WaitAny(_events)];
if (signaledEvent == _closedEvent)
{
Cleanup();
return(null);
}
var result = new SurfaceWithInfo();
//System.Diagnostics.Debug.WriteLine("Using _currentFrame");
result.SystemRelativeTime = _currentFrame.SystemRelativeTime;
//System.Diagnostics.Debug.WriteLine("Done using _currentFrame");
//result.Surface = _currentFrame.Surface; return result;
using (var multithreadLock = new MultithreadLock(_multithread))
using (var sourceTexture = Direct3D11Helpers.CreateSharpDXTexture2D(_currentFrame.Surface))
{
var description = sourceTexture.Description;
description.Usage = SharpDX.Direct3D11.ResourceUsage.Default;
description.BindFlags = SharpDX.Direct3D11.BindFlags.ShaderResource | SharpDX.Direct3D11.BindFlags.RenderTarget;
description.CpuAccessFlags = SharpDX.Direct3D11.CpuAccessFlags.None;
description.OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None;
using (var copyTexture = new SharpDX.Direct3D11.Texture2D(_d3dDevice, description))
{
var width = Math.Clamp(_currentFrame.ContentSize.Width, 0, _currentFrame.Surface.Description.Width);
var height = Math.Clamp(_currentFrame.ContentSize.Height, 0, _currentFrame.Surface.Description.Height);
var region = new SharpDX.Direct3D11.ResourceRegion(0, 0, 0, width, height, 1);
_d3dDevice.ImmediateContext.CopyResource(_blankTexture, copyTexture);
_d3dDevice.ImmediateContext.CopySubresourceRegion(sourceTexture, 0, region, copyTexture, 0);
result.Surface = Direct3D11Helpers.CreateDirect3DSurfaceFromSharpDXTexture(copyTexture);
}
}
return(result);
}
private void OnFrameArrived(Direct3D11CaptureFramePool sender, object args)
{
var newSize = false;
using (var frame = sender.TryGetNextFrame())
{
if (frame.ContentSize.Width != _lastSize.Width ||
frame.ContentSize.Height != _lastSize.Height)
{
// The thing we have been capturing has changed size.
// We need to resize our swap chain first, then blit the pixels.
// After we do that, retire the frame and then recreate our frame pool.
newSize = true;
_lastSize = frame.ContentSize;
_swapChain.ResizeBuffers(
2,
_lastSize.Width,
_lastSize.Height,
SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SharpDX.DXGI.SwapChainFlags.None);
}
using (var sourceTexture = Direct3D11Helpers.CreateSharpDXTexture2D(frame.Surface))
using (var backBuffer = _swapChain.GetBackBuffer <SharpDX.Direct3D11.Texture2D>(0))
using (var renderTargetView = new SharpDX.Direct3D11.RenderTargetView(_d3dDevice, backBuffer))
{
_d3dDevice.ImmediateContext.ClearRenderTargetView(renderTargetView, new SharpDX.Mathematics.Interop.RawColor4(0, 0, 0, 1));
_d3dDevice.ImmediateContext.CopyResource(sourceTexture, backBuffer);
}
} // retire the frame
_swapChain.Present(1, SharpDX.DXGI.PresentFlags.None);
if (newSize)
{
_framePool.Recreate(
_device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
_lastSize);
}
}
public CaptureFrameWait(
Microsoft.Graphics.Canvas.CanvasDevice canvasDevice,
GraphicsCaptureItem item,
Windows.UI.Composition.CompositionDrawingSurface surface,
SizeInt32 size)
{
// _device = device;
_canvasDevice = canvasDevice;
_d3dDevice = Direct3D11Helpers.CreateSharpDXDevice(_canvasDevice);
_multithread = _d3dDevice.QueryInterface <SharpDX.Direct3D11.Multithread>();
_multithread.SetMultithreadProtected(true);
_item = item;
_surface = surface;
_frameEvent = new ManualResetEvent(false);
_closedEvent = new ManualResetEvent(false);
_events = new[] { _closedEvent, _frameEvent };
InitializeBlankTexture(size);
InitializeCapture(size);
_frameCounter = 0;
}
public CapturePreview(IDirect3DDevice device, GraphicsCaptureItem item)
{
_item = item;
_device = device;
_d3dDevice = Direct3D11Helpers.CreateSharpDXDevice(device);
var dxgiDevice = _d3dDevice.QueryInterface <SharpDX.DXGI.Device>();
var adapter = dxgiDevice.GetParent <SharpDX.DXGI.Adapter>();
var factory = adapter.GetParent <SharpDX.DXGI.Factory2>();
var description = new SharpDX.DXGI.SwapChainDescription1
{
Width = item.Size.Width,
Height = item.Size.Height,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
Usage = SharpDX.DXGI.Usage.RenderTargetOutput,
SampleDescription = new SharpDX.DXGI.SampleDescription()
{
Count = 1,
Quality = 0
},
BufferCount = 2,
Scaling = SharpDX.DXGI.Scaling.Stretch,
SwapEffect = SharpDX.DXGI.SwapEffect.FlipSequential,
AlphaMode = SharpDX.DXGI.AlphaMode.Premultiplied
};
_swapChain = new SharpDX.DXGI.SwapChain1(factory, dxgiDevice, ref description);
_framePool = Direct3D11CaptureFramePool.CreateFreeThreaded(
_device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
item.Size);
_session = _framePool.CreateCaptureSession(item);
_lastSize = item.Size;
_framePool.FrameArrived += OnFrameArrived;
}
