31 lines
502 B
Markdown
31 lines
502 B
Markdown
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# D3D12SwapChain::GetCurrentBackBufferIndex
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## 函数签名
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```cpp
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uint32_t GetCurrentBackBufferIndex() const override
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```
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## 中文描述
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获取当前后台缓冲区的索引。
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## 返回值
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`uint32_t` - 当前后台缓冲区索引
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## 复杂度
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O(1)
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## 示例
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```cpp
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uint32_t index = swapChain->GetCurrentBackBufferIndex();
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```
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## 相关文档
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- [D3D12SwapChain](swap-chain.md) - 类总览
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- [D3D12SwapChain::GetCurrentBackBuffer](get-current-back-buffer.md) - 获取当前后台缓冲区
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