40 lines
971 B
Markdown
40 lines
971 B
Markdown
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# D3D12Buffer::Initialize
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## 函数签名
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```cpp
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bool Initialize(ID3D12Device* device, uint64_t size, D3D12_RESOURCE_STATES initialState = D3D12_RESOURCE_STATE_COMMON, D3D12_HEAP_TYPE heapType = D3D12_HEAP_TYPE_DEFAULT)
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```
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## 中文描述
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创建新缓冲区，分配 D3D12 显存资源。
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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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| `size` | `uint64_t` | 缓冲区大小（字节） |
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| `initialState` | `D3D12_RESOURCE_STATES` | 初始资源状态（默认 COMMON） |
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| `heapType` | `D3D12_HEAP_TYPE` | 堆类型：DEFAULT（默认）、UPLOAD（上传）、READBACK（回读） |
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## 返回值
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`bool` - 初始化是否成功
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## 复杂度
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O(n) - 取决于缓冲区大小
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## 示例
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```cpp
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D3D12Buffer vertexBuffer;
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vertexBuffer.Initialize(
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device->GetDevice(),
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sizeof(Vertex) * vertexCount,
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D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER,
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D3D12_HEAP_TYPE_DEFAULT);
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```
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