55 lines
1.3 KiB
Markdown
55 lines
1.3 KiB
Markdown
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# D3D12PipelineState::CreateInputElement
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## 函数签名
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```cpp
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static D3D12_INPUT_ELEMENT_DESC CreateInputElement(
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const char* semanticName,
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uint32_t semanticIndex,
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Format format,
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uint32_t inputSlot,
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uint32_t alignedByteOffset)
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static D3D12_INPUT_ELEMENT_DESC CreateInputElement(
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const char* semanticName,
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uint32_t semanticIndex,
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Format format,
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uint32_t inputSlot)
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```
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## 中文描述
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创建输入元素描述符，用于定义顶点缓冲区的数据布局。
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## 参数
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| 参数 | 类型 | 描述 |
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|------|------|------|
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| `semanticName` | `const char*` | 语义名称（如 "POSITION", "TEXCOORD"） |
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| `semanticIndex` | `uint32_t` | 语义索引 |
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| `format` | `Format` | 数据格式 |
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| `inputSlot` | `uint32_t` | 输入槽位 |
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| `alignedByteOffset` | `uint32_t` | 对齐字节偏移（仅第一个重载） |
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## 返回值
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`D3D12_INPUT_ELEMENT_DESC` - 输入元素描述符
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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_INPUT_ELEMENT_DESC elements[] = {
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D3D12PipelineState::CreateInputElement("POSITION", 0, Format::R32G32B32_FLOAT, 0, 0),
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D3D12PipelineState::CreateInputElement("TEXCOORD", 0, Format::R32G32_FLOAT, 0, 12)
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};
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```
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## 相关文档
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- [D3D12PipelineState](pipeline-state.md) - 类总览
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- [D3D12PipelineState::CreateDesc](create-desc.md) - 创建管线描述符
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