public void CreateWindowSizeDependentResources()
{
WaitForGpu();
for (int n = 0; n < FrameCount; n++)
{
DirectXHelper.ReleaseCom(_renderTargets[n]);
_renderTargets[n] = null;
_fenceValues[n] = _fenceValues[_currentFrame];
}
UpdateRenderTargetSize();
DXGI_MODE_ROTATION displayRotation = ComputeDisplayRotation();
bool swapDimensions =
displayRotation == DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_ROTATE90 ||
displayRotation == DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_ROTATE270;
_d3dRenderTargetSize.Width = swapDimensions ? _outputSize.Height : _outputSize.Width;
_d3dRenderTargetSize.Height = swapDimensions ? _outputSize.Width : _outputSize.Height;
uint backBufferWidth = (uint)Math.Round(_d3dRenderTargetSize.Width, MidpointRounding.AwayFromZero);
uint backBufferHeight = (uint)Math.Round(_d3dRenderTargetSize.Height, MidpointRounding.AwayFromZero);
if (_swapChain != null)
{
HRESULT hr = _swapChain.Ptr->ResizeBuffers(FrameCount, backBufferWidth, backBufferHeight, _backBufferFormat,
0);
if (hr == DXGI_ERROR_DEVICE_REMOVED || hr == DXGI_ERROR_DEVICE_RESET)
{
_deviceRemoved = true;
return;
}
else
{
DirectXHelper.ThrowIfFailed(hr);
}
}
else
{
DXGI_SCALING scaling = DisplayMetrics.SupportHighResolutions
? DXGI_SCALING.DXGI_SCALING_NONE
: DXGI_SCALING.DXGI_SCALING_STRETCH;
DXGI_SWAP_CHAIN_DESC1 swapChainDesc;
swapChainDesc.Width = backBufferWidth;
swapChainDesc.Height = backBufferHeight;
swapChainDesc.Format = _backBufferFormat;
swapChainDesc.Stereo = 0;
swapChainDesc.SampleDesc.Count = 1;
swapChainDesc.SampleDesc.Quality = 0;
swapChainDesc.BufferUsage = DXGI.DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc.BufferCount = FrameCount;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT.DXGI_SWAP_EFFECT_FLIP_DISCARD;
swapChainDesc.Flags = 0;
swapChainDesc.Scaling = scaling;
swapChainDesc.AlphaMode = DXGI_ALPHA_MODE.DXGI_ALPHA_MODE_IGNORE;
{
using ComPtr <IDXGISwapChain1> swapChain = null;
IntPtr pWindow = Marshal.GetIUnknownForObject(_window);
DirectXHelper.ThrowIfFailed(
_dxgiFactory.Ptr->CreateSwapChainForCoreWindow(
_commandQueue,
(IUnknown *)pWindow,
&swapChainDesc,
null,
swapChain.GetAddressOf()));
IDXGISwapChain3 *swapChain3;
Guid iid = DXGI.IID_IDXGISwapChain3;
DirectXHelper.ThrowIfFailed(swapChain.Ptr->QueryInterface(&iid, (void **)&swapChain3));
_swapChain = swapChain3;
}
}
switch (displayRotation)
{
case DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_IDENTITY:
_orientationTransform3D = ScreenRotation.Rotation0;
break;
case DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_ROTATE90:
_orientationTransform3D = ScreenRotation.Rotation270;
break;
case DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_ROTATE180:
_orientationTransform3D = ScreenRotation.Rotation180;
break;
case DXGI_MODE_ROTATION.DXGI_MODE_ROTATION_ROTATE270:
_orientationTransform3D = ScreenRotation.Rotation90;
break;
}
DirectXHelper.ThrowIfFailed(_swapChain.Ptr->SetRotation(displayRotation));
{
_currentFrame = (int)_swapChain.Ptr->GetCurrentBackBufferIndex();
D3D12_CPU_DESCRIPTOR_HANDLE rtvDescriptor = _rtvHeap.Ptr->GetCPUDescriptorHandleForHeapStart();
fixed(void *pBuffer = & _renderTargets)
{
var p = (ID3D12Resource **)pBuffer;
Guid iid = D3D12.IID_ID3D12Resource;
for (var n = 0; n < FrameCount; n++)
{
DirectXHelper.ThrowIfFailed(_swapChain.Ptr->GetBuffer((uint)n, &iid, (void **)&p[n]));
_d3dDevice.Ptr->CreateRenderTargetView(
_renderTargets[n],
null,
rtvDescriptor);
rtvDescriptor.Offset((int)_rtvDescriptorSize);
DirectXHelper.NameObject(_renderTargets[n], $"{nameof(_renderTargets)}[{n}]"); // _renderTargets[n]
}
}
}
{
D3D12_HEAP_PROPERTIES depthHeapProperties = CD3DX12_HEAP_PROPERTIES.Create(D3D12_HEAP_TYPE.D3D12_HEAP_TYPE_DEFAULT);
D3D12_RESOURCE_DESC depthResourceDesc =
CD3DX12_RESOURCE_DESC.Tex2D(_depthBufferFormat, backBufferWidth, backBufferHeight, 1, 1);
depthResourceDesc.Flags |= D3D12_RESOURCE_FLAGS.D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL;
D3D12_CLEAR_VALUE depthOptimizedClearValue = CD3DX12_CLEAR_VALUE.Create(_depthBufferFormat, 1, 0);
fixed(ID3D12Resource **p = _depthStencil)
{
Guid iid = D3D12.IID_ID3D12Resource;
DirectXHelper.ThrowIfFailed(_d3dDevice.Ptr->CreateCommittedResource(
&depthHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&depthResourceDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_DEPTH_WRITE,
&depthOptimizedClearValue,
&iid,
(void **)p
));
DirectXHelper.NameObject(_depthStencil, nameof(_depthStencil));
D3D12_DEPTH_STENCIL_VIEW_DESC dsvDesc = default;
dsvDesc.Format = _depthBufferFormat;
dsvDesc.ViewDimension = D3D12_DSV_DIMENSION.D3D12_DSV_DIMENSION_TEXTURE2D;
dsvDesc.Flags = D3D12_DSV_FLAGS.D3D12_DSV_FLAG_NONE;
D3D12_CPU_DESCRIPTOR_HANDLE handle = _dsvHeap.Ptr->GetCPUDescriptorHandleForHeapStart();
_d3dDevice.Ptr->CreateDepthStencilView(_depthStencil.Ptr, &dsvDesc, handle);
}
}
// 0.0f, 0.0f, m_d3dRenderTargetSize.Width, m_d3dRenderTargetSize.Height, 0.0f, 1.0f
_screenViewport = new D3D12_VIEWPORT
{
TopLeftX = 0,
TopLeftY = 0,
Width = (float)_d3dRenderTargetSize.Width,
Height = (float)_d3dRenderTargetSize.Height,
MinDepth = 0,
MaxDepth = 1
};
}
