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XCSDD/docs/api/rhi/swap-chain/get-current-back-buffer-index.md
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RHISwapChain::GetCurrentBackBufferIndex

virtual uint32_t GetCurrentBackBufferIndex() const = 0;

获取当前后台缓冲区索引。

返回: 当前后台缓冲区索引

示例:

uint32_t index = swapChain->GetCurrentBackBufferIndex();

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