docs: update RHI API docs
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docs/api/rhi/d3d12/common/get-gpu-descriptor-handle.md
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docs/api/rhi/d3d12/common/get-gpu-descriptor-handle.md
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# D3D12Common::GetGPUDescriptorHandle
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```cpp
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inline D3D12_GPU_DESCRIPTOR_HANDLE GetGPUDescriptorHandle(
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D3D12_GPU_DESCRIPTOR_HANDLE baseHandle,
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UINT offsetInDescriptors,
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UINT descriptorSize
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)
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```
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计算偏移后的 GPU 描述符句柄。
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**参数:**
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- `baseHandle` - 基础描述符句柄
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- `offsetInDescriptors` - 描述符偏移数量
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- `descriptorSize` - 单个描述符大小(字节)
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**返回:** 偏移后的 GPU 描述符句柄
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**线程安全:** ✅(纯函数)
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**示例:**
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```cpp
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D3D12_GPU_DESCRIPTOR_HANDLE srvHandle = GetGPUDescriptorHandle(
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heapStartHandle,
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5, // 第6个描述符
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srvDescriptorSize
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);
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```
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## 相关文档
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- [D3D12Common 总览](common.md)
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- [GetCPUDescriptorHandle](get-cpu-descriptor-handle.md)
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