void InitSwapChain()
{
var panelUnknown = Marshal.GetIUnknownForObject(SwapChain);
IntPtr swapChainPanelNativePtr = IntPtr.Zero;
try
{
var guid = Guid.Parse("63aad0b8-7c24-40ff-85a8-640d944cc325");
Marshal.ThrowExceptionForHR(Marshal.QueryInterface(panelUnknown, ref guid, out swapChainPanelNativePtr));
}
finally
{
Marshal.Release(panelUnknown);
}
if (swapChainPanelNativePtr != IntPtr.Zero)
{
m_swapChainNative = (ISwapChainPanelNative *)swapChainPanelNativePtr;
try
{
#region Init SwapChain
DXGI_SWAP_CHAIN_DESC1 swapChainDesc = new DXGI_SWAP_CHAIN_DESC1
{
Width = (uint)SwapChain.ActualWidth,
Height = (uint)SwapChain.ActualHeight,
Format = colorFormat, // This is the most common swapchain format.
Stereo = 0,
BufferUsage = (uint)(1L << (1 + 4)),
BufferCount = 2,
Scaling = DXGI_SCALING.DXGI_SCALING_STRETCH,
SwapEffect = DXGI_SWAP_EFFECT.DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL,
Flags = 0
};
swapChainDesc.SampleDesc.Count = 1; // Don't use multi-sampling.
swapChainDesc.SampleDesc.Quality = 0;
// Get D3DDevice
// This flag adds support for surfaces with a different color channel
// ordering than the API default. It is required for compatibility with Direct2D.
D3D11_CREATE_DEVICE_FLAG creationFlags = D3D11_CREATE_DEVICE_FLAG.D3D11_CREATE_DEVICE_BGRA_SUPPORT;
#if DEBUG
// If the project is in a debug build, enable debugging via SDK Layers.
creationFlags |= D3D11_CREATE_DEVICE_FLAG.D3D11_CREATE_DEVICE_DEBUG;
#endif
// This example only uses feature level 9.1.
D3D_FEATURE_LEVEL[] featureLevels =
{
D3D_FEATURE_LEVEL.D3D_FEATURE_LEVEL_9_1
};
var pFeatureLevel = D3D_FEATURE_LEVEL.D3D_FEATURE_LEVEL_11_1;
// Create the Direct3D 11 API device object and a corresponding context.
D3D11CreateDevice(
(IDXGIAdapter *)IntPtr.Zero.ToPointer(), // Specify nullptr to use the default adapter.
D3D_DRIVER_TYPE.D3D_DRIVER_TYPE_HARDWARE,
IntPtr.Zero,
(uint)creationFlags,
InteropUtilities.AsPointer(featureLevels.AsSpan()),
(uint)featureLevels.Length,
D3D11_SDK_VERSION, // UWP apps must set this to D3D11_SDK_VERSION.
m_d3dDevice.GetAddressOf(), // Returns the Direct3D device created.
InteropUtilities.AsPointer(ref pFeatureLevel),
m_d3dContext.GetAddressOf() // Returns the device immediate context.
);
// QI for DXGI device
m_d3dDevice.As(ref m_dxgiDevice);
// Get the DXGI adapter.
IDXGIAdapter *dxgiAdapter;
m_dxgiDevice.Get()->GetAdapter(&dxgiAdapter);
// Get the DXGI factory.
IDXGIFactory2 *dxgiFactory;
var dxgiFactoryGuid = typeof(IDXGIFactory2).GUID;
dxgiAdapter->GetParent(InteropUtilities.AsPointer(ref dxgiFactoryGuid), (void **)&dxgiFactory);
// Create a swap chain by calling CreateSwapChainForComposition.
dxgiFactory->CreateSwapChainForComposition(
(IUnknown *)(ID3D11Device *)m_d3dDevice,
&swapChainDesc,
null, // Allow on any display.
m_swapChain.GetAddressOf()
);
m_swapChainNative.Get()->SetSwapChain((IDXGISwapChain *)m_swapChain.Get());
#endregion
InitPipeline();
InitGraphics();
int hr = m_swapChain.Get()->Present(1, 0);
Marshal.ThrowExceptionForHR(hr);
SwapChain.SizeChanged += SwapChain_SizeChanged;
}
finally
{
m_swapChainNative.Get()->Release();
}
}
}