private D3D12_CPU_DESCRIPTOR_HANDLE OffsetCpu(int count) => Cpu.Offset(count, IncrementSize);
private unsafe void CreateAssets()
{
ID3D12Device *d3dDevice = _deviceResources.D3DDevice;
Guid iid;
{
iid = D3D12.IID_ID3D12GraphicsCommandList;
ID3D12GraphicsCommandList *commandList;
ThrowIfFailed(d3dDevice->CreateCommandList(
0,
D3D12_COMMAND_LIST_TYPE.D3D12_COMMAND_LIST_TYPE_DIRECT,
_deviceResources.CommandAllocator,
_pipelineState.Ptr,
&iid,
(void **)&commandList));
_commandList = commandList;
DX.NameD3D12Object(_commandList.Ptr, nameof(_commandList));
}
// Cube vertices. Each vertex has a position and a color.
const uint vertexPositionColorCount = 8;
VertexPositionColor *cubeVertices = stackalloc VertexPositionColor[(int)vertexPositionColorCount]
{
new VertexPositionColor {
pos = new Vector3(-0.5f, -0.5f, -0.5f), color = new Vector3(0.0f, 0.0f, 0.0f)
},
new VertexPositionColor {
pos = new Vector3(-0.5f, -0.5f, 0.5f), color = new Vector3(0.0f, 0.0f, 1.0f)
},
new VertexPositionColor {
pos = new Vector3(-0.5f, 0.5f, -0.5f), color = new Vector3(0.0f, 1.0f, 0.0f)
},
new VertexPositionColor {
pos = new Vector3(-0.5f, 0.5f, 0.5f), color = new Vector3(0.0f, 1.0f, 1.0f)
},
new VertexPositionColor {
pos = new Vector3(0.5f, -0.5f, -0.5f), color = new Vector3(1.0f, 0.0f, 0.0f)
},
new VertexPositionColor {
pos = new Vector3(0.5f, -0.5f, 0.5f), color = new Vector3(1.0f, 0.0f, 1.0f)
},
new VertexPositionColor {
pos = new Vector3(0.5f, 0.5f, -0.5f), color = new Vector3(1.0f, 1.0f, 0.0f)
},
new VertexPositionColor {
pos = new Vector3(0.5f, 0.5f, 0.5f), color = new Vector3(1.0f, 1.0f, 1.0f)
}
};
Debug.Assert(sizeof(VertexPositionColor) == Marshal.SizeOf <VertexPositionColor>());
uint vertexBufferSize = (uint)sizeof(VertexPositionColor) * vertexPositionColorCount;
using ComPtr <ID3D12Resource> vertexBufferUpload = default;
D3D12_HEAP_PROPERTIES defaultHeapProperties =
CD3DX12_HEAP_PROPERTIES.Create(D3D12_HEAP_TYPE.D3D12_HEAP_TYPE_DEFAULT);
D3D12_RESOURCE_DESC vertexBufferDesc = CD3DX12_RESOURCE_DESC.Buffer(vertexBufferSize);
{
iid = D3D12.IID_ID3D12Resource;
ID3D12Resource *vertexBuffer;
ThrowIfFailed(d3dDevice->CreateCommittedResource(
&defaultHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&vertexBufferDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_COPY_DEST,
null,
&iid,
(void **)&vertexBuffer));
_vertexBuffer = vertexBuffer;
}
iid = D3D12.IID_ID3D12Resource;
D3D12_HEAP_PROPERTIES uploadHeapProperties =
CD3DX12_HEAP_PROPERTIES.Create(D3D12_HEAP_TYPE.D3D12_HEAP_TYPE_UPLOAD);
ThrowIfFailed(d3dDevice->CreateCommittedResource(
&uploadHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&vertexBufferDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_GENERIC_READ,
null,
&iid,
(void **)vertexBufferUpload.GetAddressOf()));
DX.NameD3D12Object(_vertexBuffer.Ptr, nameof(_vertexBuffer));
{
D3D12_SUBRESOURCE_DATA vertexData;
vertexData.pData = (byte *)cubeVertices;
vertexData.RowPitch = (IntPtr)vertexBufferSize;
vertexData.SlicePitch = vertexData.RowPitch;
Functions.UpdateSubresources(
_commandList.Ptr,
_vertexBuffer.Ptr,
vertexBufferUpload.Ptr,
0, 0, 1,
&vertexData);
D3D12_RESOURCE_BARRIER vertexBufferResourceBarrier =
CD3DX12_RESOURCE_BARRIER.Transition(_vertexBuffer.Ptr,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_COPY_DEST,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER);
_commandList.Ptr->ResourceBarrier(1, &vertexBufferResourceBarrier);
}
const int cubeIndicesCount = 36;
ushort * cubeIndices = stackalloc ushort[cubeIndicesCount]
{
0,
2,
1, // -x
1,
2,
3,
4,
5,
6, // +x
5,
7,
6,
0,
1,
5, // -y
0,
5,
4,
2,
6,
7, // +y
2,
7,
3,
0,
4,
6, // -z
0,
6,
2,
1,
3,
7, // +z
1,
7,
5,
};
const uint indexBufferSize = sizeof(ushort) * cubeIndicesCount;
using var indexBufferUpload = new ComPtr <ID3D12Resource>();
D3D12_RESOURCE_DESC indexBufferDesc = CD3DX12_RESOURCE_DESC.Buffer(indexBufferSize);
{
iid = D3D12.IID_ID3D12Resource;
ID3D12Resource *indexBuffer;
ThrowIfFailed(d3dDevice->CreateCommittedResource(
&defaultHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&indexBufferDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_COPY_DEST,
null,
&iid,
(void **)&indexBuffer));
_indexBuffer = indexBuffer;
}
iid = D3D12.IID_ID3D12Resource;
ThrowIfFailed(d3dDevice->CreateCommittedResource(
&uploadHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&indexBufferDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_GENERIC_READ,
null,
&iid,
(void **)indexBufferUpload.GetAddressOf()));
DX.NameD3D12Object(_indexBuffer.Ptr, nameof(_indexBuffer));
{
D3D12_SUBRESOURCE_DATA indexData;
indexData.pData = (byte *)cubeIndices;
indexData.RowPitch = (IntPtr)indexBufferSize;
indexData.SlicePitch = indexData.RowPitch;
Functions.UpdateSubresources(
_commandList.Ptr,
_indexBuffer.Ptr,
indexBufferUpload.Ptr,
0, 0, 1,
&indexData);
D3D12_RESOURCE_BARRIER indexBufferResourceBarrier =
CD3DX12_RESOURCE_BARRIER.Transition(_indexBuffer.Ptr,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_COPY_DEST,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_INDEX_BUFFER);
_commandList.Ptr->ResourceBarrier(1, &indexBufferResourceBarrier);
}
{
D3D12_DESCRIPTOR_HEAP_DESC heapDesc;
heapDesc.NumDescriptors = DeviceResources.FrameCount;
heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE.D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAGS.D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
{
ID3D12DescriptorHeap *cbvHeap;
iid = D3D12.IID_ID3D12DescriptorHeap;
ThrowIfFailed(d3dDevice->CreateDescriptorHeap(&heapDesc, &iid, (void **)&cbvHeap));
_cbvHeap = cbvHeap;
DX.NameD3D12Object(_cbvHeap.Ptr, nameof(_cbvHeap));
}
}
D3D12_RESOURCE_DESC constantBufferDesc = CD3DX12_RESOURCE_DESC.Buffer(
DeviceResources.FrameCount * AlignedConstantBufferSize);
{
iid = D3D12.IID_ID3D12Resource;
ID3D12Resource *constantBuffer;
ThrowIfFailed(d3dDevice->CreateCommittedResource(
&uploadHeapProperties,
D3D12_HEAP_FLAGS.D3D12_HEAP_FLAG_NONE,
&constantBufferDesc,
D3D12_RESOURCE_STATES.D3D12_RESOURCE_STATE_GENERIC_READ,
null,
&iid,
(void **)&constantBuffer));
_constantBuffer = constantBuffer;
DX.NameD3D12Object(_constantBuffer.Ptr, nameof(_constantBuffer));
}
D3D12_GPU_VIRTUAL_ADDRESS cbvGpuAddress = _constantBuffer.Ptr->GetGPUVirtualAddress();
D3D12_CPU_DESCRIPTOR_HANDLE cbvCpuHandle = _cbvHeap.Ptr->GetCPUDescriptorHandleForHeapStart();
_cbvDescriptorSize =
d3dDevice->GetDescriptorHandleIncrementSize(
D3D12_DESCRIPTOR_HEAP_TYPE.D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
for (var i = 0; i < DeviceResources.FrameCount; i++)
{
D3D12_CONSTANT_BUFFER_VIEW_DESC desc;
desc.BufferLocation = cbvGpuAddress;
desc.SizeInBytes = AlignedConstantBufferSize;
d3dDevice->CreateConstantBufferView(&desc, cbvCpuHandle);
cbvGpuAddress += desc.SizeInBytes;
cbvCpuHandle.Offset((int)_cbvDescriptorSize);
}
D3D12_RANGE readRange = CD3DX12_RANGE.Create((UIntPtr)0, (UIntPtr)0);
fixed(byte **p = &_mappedConstantBuffer)
{
ThrowIfFailed(_constantBuffer.Ptr->Map(0, &readRange, (void **)p));
Unsafe.InitBlockUnaligned(_mappedConstantBuffer, 0, DeviceResources.FrameCount * AlignedConstantBufferSize);
}
ThrowIfFailed(_commandList.Ptr->Close());
const int ppCommandListCount = 1;
ID3D12CommandList **ppCommandLists = stackalloc ID3D12CommandList *[ppCommandListCount]
{
(ID3D12CommandList *)_commandList.Ptr
};
_deviceResources.CommandQueue->ExecuteCommandLists(ppCommandListCount, ppCommandLists);
_vertexBufferView.BufferLocation = _vertexBuffer.Ptr->GetGPUVirtualAddress();
_vertexBufferView.StrideInBytes = (uint)sizeof(VertexPositionColor);
_vertexBufferView.SizeInBytes = vertexBufferSize;
_indexBufferView.BufferLocation = _indexBuffer.Ptr->GetGPUVirtualAddress();
_indexBufferView.SizeInBytes = indexBufferSize;
_indexBufferView.Format = DXGI_FORMAT.DXGI_FORMAT_R16_UINT;
_deviceResources.WaitForGpu();
}
#endregion
}
}
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
};
}