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40 lines
947 B
Markdown
40 lines
947 B
Markdown
# D3D12ShaderResourceView::InitializeAt
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## 函数签名
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```cpp
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void InitializeAt(ID3D12Device* device, ID3D12Resource* resource, D3D12_CPU_DESCRIPTOR_HANDLE handle, const D3D12_SHADER_RESOURCE_VIEW_DESC* desc = nullptr)
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```
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## 中文描述
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在指定描述符句柄位置初始化着色器资源视图，用于外部描述符堆管理场景。
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## 参数
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| 参数 | 类型 | 描述 |
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|------|------|------|
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| `device` | `ID3D12Device*` | D3D12 设备指针 |
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| `resource` | `ID3D12Resource*` | 资源指针 |
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| `handle` | `D3D12_CPU_DESCRIPTOR_HANDLE` | 预分配的描述符句柄 |
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| `desc` | `D3D12_SHADER_RESOURCE_VIEW_DESC*` | 视图描述符（可选） |
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## 返回值
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无
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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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D3D12_CPU_DESCRIPTOR_HANDLE handle = descriptorHeap->GetCPUDescriptorHandleForHeapStart();
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srv->InitializeAt(device, resource, handle);
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```
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## 相关文档
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- [D3D12ShaderResourceView](shader-resource-view.md) - 类总览
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