帮我写一个这种数据转化的代码

好的，以下是一个简单的数据转换代码，用于将 glTF 模型中的 `(position, normal, tangent, texcoord)` 顶点数据转换为 DirectX 12 中的 `(position, normal, tangent, texcoord)` 输入布局：

// 定义顶点结构体
struct Vertex {
    DirectX::XMFLOAT3 position;
    DirectX::XMFLOAT3 normal;
    DirectX::XMFLOAT3 tangent;
    DirectX::XMFLOAT2 texcoord;
};

// 读取 glTF 中的四个 bufferView，将数据转换为 Vertex 结构体的形式
std::vector<Vertex> vertices;
for (size_t i = 0; i < num_vertices; ++i) {
    Vertex vertex;
    vertex.position = DirectX::XMFLOAT3(position_ptr[i * 3], position_ptr[i * 3 + 1], position_ptr[i * 3 + 2]);
    vertex.normal = DirectX::XMFLOAT3(normal_ptr[i * 3], normal_ptr[i * 3 + 1], normal_ptr[i * 3 + 2]);
    vertex.tangent = DirectX::XMFLOAT3(tangent_ptr[i * 3], tangent_ptr[i * 3 + 1], tangent_ptr[i * 3 + 2]);
    vertex.texcoord = DirectX::XMFLOAT2(texcoord_ptr[i * 2], texcoord_ptr[i * 2 + 1]);
    vertices.push_back(vertex);
}

// 创建顶点缓冲区
ComPtr<ID3D12Resource> vertexBuffer;
D3D12_HEAP_PROPERTIES heapProps = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
D3D12_RESOURCE_DESC bufferDesc = CD3DX12_RESOURCE_DESC::Buffer(vertices.size() * sizeof(Vertex));
ThrowIfFailed(device->CreateCommittedResource(&heapProps, D3D12_HEAP_FLAG_NONE, &bufferDesc,
    D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&vertexBuffer)));

// 将顶点数据写入到顶点缓冲区中
UINT8* mappedData = nullptr;
ThrowIfFailed(vertexBuffer->Map(0, nullptr, reinterpret_cast<void**>(&mappedData)));
memcpy(mappedData, vertices.data(), vertices.size() * sizeof(Vertex));
vertexBuffer->Unmap(0, nullptr);

// 定义输入布局
const D3D12_INPUT_ELEMENT_DESC inputLayout[] = {
    { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, offsetof(Vertex, position), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
    { "NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, offsetof(Vertex, normal), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
    { "TANGENT", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, offsetof(Vertex, tangent), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
    { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, offsetof(Vertex, texcoord), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
};

// 创建输入布局
ComPtr<ID3D12InputLayout> inputLayoutObj;
ThrowIfFailed(device->CreateInputLayout(inputLayout, _countof(inputLayout), vertexShader->GetBufferPointer(),
    vertexShader->GetBufferSize(), &inputLayoutObj));

// 绑定顶点缓冲区和输入布局
D3D12_VERTEX_BUFFER_VIEW vertexBufferView = {};
vertexBufferView.BufferLocation = vertexBuffer->GetGPUVirtualAddress();
vertexBufferView.StrideInBytes = sizeof(Vertex);
vertexBufferView.SizeInBytes = vertices.size() * sizeof(Vertex);
commandList->IASetVertexBuffers(0, 1, &vertexBufferView);
commandList->IASetInputLayout(inputLayoutObj.Get());

这段代码中，首先将 glTF 中的 `(position, normal, tangent, texcoord)` 顶点数据读取出来，然后将它们按照 `Vertex` 结构体的顺序重新排列，并写入到新的顶点缓冲区中。接着，定义了输入布局的描述信息，并通过 `CreateInputLayout` 函数创建输入布局对象。最后，将顶点缓冲区和输入布局绑定到渲染管线上。