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Add D3D12Buffer::InitializeWithData for vertex/index buffers

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ssdfasd
2026-03-15 19:16:46 +08:00
parent 42c17ee106
commit f1cbf4e3a6
2 changed files with 93 additions and 0 deletions
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2
engine/include/XCEngine/RHI/D3D12/D3D12Buffer.h
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@@ -17,6 +17,8 @@ public:
bool Initialize(ID3D12Device* device, uint64_t size, D3D12_RESOURCE_STATES initialState = D3D12_RESOURCE_STATE_COMMON, D3D12_HEAP_TYPE heapType = D3D12_HEAP_TYPE_DEFAULT);
bool InitializeFromExisting(ID3D12Resource* resource);
bool InitializeWithData(ID3D12Device* device, ID3D12GraphicsCommandList* commandList,
const void* data, uint64_t size, D3D12_RESOURCE_STATES finalState);
void Shutdown();
ID3D12Resource* GetResource() const { return m_resource.Get(); }

91
engine/src/RHI/D3D12Buffer.cpp
View File

@@ -52,6 +52,97 @@ bool D3D12Buffer::InitializeFromExisting(ID3D12Resource* resource) {
return true;
}
bool D3D12Buffer::InitializeWithData(ID3D12Device* device, ID3D12GraphicsCommandList* commandList,
const void* data, uint64_t size, D3D12_RESOURCE_STATES finalState) {
D3D12_HEAP_PROPERTIES heapProperties = {};
heapProperties.Type = D3D12_HEAP_TYPE_DEFAULT;
D3D12_RESOURCE_DESC bufferDesc = {};
bufferDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
bufferDesc.Alignment = 0;
bufferDesc.Width = size;
bufferDesc.Height = 1;
bufferDesc.DepthOrArraySize = 1;
bufferDesc.MipLevels = 1;
bufferDesc.Format = DXGI_FORMAT_UNKNOWN;
bufferDesc.SampleDesc.Count = 1;
bufferDesc.SampleDesc.Quality = 0;
bufferDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
bufferDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
HRESULT hResult = device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&bufferDesc,
D3D12_RESOURCE_STATE_COPY_DEST,
nullptr,
IID_PPV_ARGS(&m_resource)
);
if (FAILED(hResult)) {
return false;
}
bufferDesc = m_resource->GetDesc();
UINT64 memorySizeUsed = 0;
UINT64 rowSizeInBytes = 0;
UINT rowUsed = 0;
D3D12_PLACED_SUBRESOURCE_FOOTPRINT subresourceFootprint;
device->GetCopyableFootprints(&bufferDesc, 0, 1, 0,
&subresourceFootprint, &rowUsed, &rowSizeInBytes, &memorySizeUsed);
ComPtr<ID3D12Resource> tempBufferObject;
D3D12_HEAP_PROPERTIES d3dTempHeapProperties = {};
d3dTempHeapProperties.Type = D3D12_HEAP_TYPE_UPLOAD;
D3D12_RESOURCE_DESC d3d12TempResourceDesc = {};
d3d12TempResourceDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
d3d12TempResourceDesc.Alignment = 0;
d3d12TempResourceDesc.Width = memorySizeUsed;
d3d12TempResourceDesc.Height = 1;
d3d12TempResourceDesc.DepthOrArraySize = 1;
d3d12TempResourceDesc.MipLevels = 1;
d3d12TempResourceDesc.Format = DXGI_FORMAT_UNKNOWN;
d3d12TempResourceDesc.SampleDesc.Count = 1;
d3d12TempResourceDesc.SampleDesc.Quality = 0;
d3d12TempResourceDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
d3d12TempResourceDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
hResult = device->CreateCommittedResource(
&d3dTempHeapProperties,
D3D12_HEAP_FLAG_NONE,
&d3d12TempResourceDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr,
IID_PPV_ARGS(&tempBufferObject)
);
if (FAILED(hResult)) {
return false;
}
BYTE* pData;
tempBufferObject->Map(0, nullptr, reinterpret_cast<void**>(&pData));
BYTE* pDstTempBuffer = reinterpret_cast<BYTE*>(pData + subresourceFootprint.Offset);
const BYTE* pSrcData = reinterpret_cast<const BYTE*>(data);
memcpy(pDstTempBuffer, pSrcData, size);
tempBufferObject->Unmap(0, nullptr);
commandList->CopyBufferRegion(m_resource.Get(), 0, tempBufferObject.Get(), 0, subresourceFootprint.Footprint.Width);
D3D12_RESOURCE_BARRIER barrier = {};
barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
barrier.Transition.pResource = m_resource.Get();
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
barrier.Transition.StateAfter = finalState;
barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
commandList->ResourceBarrier(1, &barrier);
return true;
}
void D3D12Buffer::Shutdown() {
m_resource.Reset();
}