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# D3D12CommandList::CopyBuffer
```cpp
void CopyBuffer(ID3D12Resource* dst, uint64_t dstOffset, ID3D12Resource* src, uint64_t srcOffset, uint64_t size);
```
复制缓冲区。
**参数:**
- `dst` - 目标缓冲区
- `dstOffset` - 目标偏移
- `src` - 源缓冲区
- `srcOffset` - 源偏移
- `size` - 复制大小
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**复杂度:** O(n)n 为复制数据量
**示例:**
```cpp
ID3D12Resource* srcBuffer = /* 源缓冲区 */;
ID3D12Resource* dstBuffer = /* 目标缓冲区 */;
cmdList.CopyBuffer(dstBuffer, 0, srcBuffer, 0, 1024);
```
## 相关文档
- [D3D12CommandList 总览](command-list.md) - 返回类总览
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- [CopyResource](copy-resource.md) - 复制整个资源
- [CopyTexture](copy-texture.md) - 复制纹理数据