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XCSDD/docs/api/rhi/d3d12/buffer/set-data.md
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# D3D12Buffer::SetData
## 函数签名
```cpp
void SetData(const void* data, size_t size, size_t offset = 0) override
```
## 中文描述
设置缓冲区数据。通过 Map/Unmap 实现。
## 参数
| 参数 | 类型 | 描述 |
|------|------|------|
| `data` | `const void*` | 数据指针 |
| `size` | `size_t` | 数据大小 |
| `offset` | `size_t` | 缓冲区内的偏移量 |
## 复杂度
O(n)