public DxgiSwapChain2 CreateSwapChainForWindowHandle(
object device,
IntPtr hwnd,
DxgiSwapChainDesc1 desc,
DxgiSwapChainFullscreenDesc? fullscreenDesc,
DxgiOutput2 restrictToOutput)
{
if (fullscreenDesc == null)
{
return new DxgiSwapChain2(this.factory.CreateSwapChainForWindowHandle(
device,
hwnd,
ref desc,
IntPtr.Zero,
restrictToOutput == null ? null : restrictToOutput.GetHandle<IDxgiOutput>()));
}
else
{
IntPtr fullscreenDescPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DxgiSwapChainFullscreenDesc)));
try
{
Marshal.StructureToPtr(fullscreenDesc.Value, fullscreenDescPtr, false);
return new DxgiSwapChain2(this.factory.CreateSwapChainForWindowHandle(
device,
hwnd,
ref desc,
fullscreenDescPtr,
restrictToOutput == null ? null : restrictToOutput.GetHandle<IDxgiOutput>()));
}
finally
{
Marshal.FreeHGlobal(fullscreenDescPtr);
}
}
}
protected override D3D11Texture2D OnCreateBackBuffer()
{
if (this.swapChain)
{
try
{
this.swapChain.ResizeBuffers(3, 0, 0, DxgiFormat.Unknown, DxgiSwapChainOptions.None);
}
catch (Exception ex)
{
if (ex.HResult == DxgiError.DeviceRemoved || ex.HResult == DxgiError.DeviceReset)
{
this.HandleDeviceLost();
return(null);
}
throw;
}
}
else
{
DxgiSwapChainDesc1 swapChainDesc = new DxgiSwapChainDesc1
{
Width = 0,
Height = 0,
Format = DxgiFormat.B8G8R8A8UNorm,
Stereo = false,
SampleDescription = new DxgiSampleDesc(1, 0),
BufferUsage = DxgiUsages.RenderTargetOutput,
BufferCount = 3,
Scaling = DxgiScaling.None,
SwapEffect = DxgiSwapEffect.FlipSequential,
AlphaMode = DxgiAlphaMode.Ignore,
Options = DxgiSwapChainOptions.None
};
using (var dxgiDevice = new DxgiDevice2(this.D3DDevice.Handle))
using (var dxgiAdapter = dxgiDevice.GetAdapter())
using (var dxgiFactory = dxgiAdapter.GetParent())
{
try
{
this.swapChain = dxgiFactory.CreateSwapChainForWindowHandle(
this.D3DDevice.Handle,
this.window.Handle,
swapChainDesc,
null,
null);
}
catch (Exception ex)
{
if (ex.HResult == DxgiError.InvalidCall)
{
swapChainDesc.SwapEffect = DxgiSwapEffect.Sequential;
this.swapChain = dxgiFactory.CreateSwapChainForWindowHandle(
this.D3DDevice.Handle,
this.window.Handle,
swapChainDesc,
null,
null);
}
else
{
throw;
}
}
dxgiDevice.MaximumFrameLatency = 1;
}
}
return(this.swapChain.GetTexture2D(0));
}
