20 lines
350 B
Markdown
20 lines
350 B
Markdown
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# RHISwapChain::GetCurrentBackBufferIndex
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```cpp
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virtual uint32_t GetCurrentBackBufferIndex() const = 0;
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```
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获取当前后台缓冲区索引。
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**返回：** 当前后台缓冲区索引
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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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- [RHISwapChain 总览](swap-chain.md) - 返回类总览
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