# RHISampler::GetID

```cpp
virtual unsigned int GetID() = 0;
```

获取采样器的唯一标识符。该方法返回分配给采样器的唯一整数 ID，可用于采样器的识别、缓存管理或调试目的。

**参数：** 无

**返回：** 采样器的唯一无符号整数标识符

**线程安全：** ❌

**复杂度：** O(1)

**示例：**

```cpp
#include "XCEngine/RHI/RHISampler.h"

class MySampler : public XCEngine::RHI::RHISampler {
public:
    void Shutdown() override { }
    void Bind(unsigned int unit) override { }
    void Unbind(unsigned int unit) override { }
    void* GetNativeHandle() override { return nullptr; }
    unsigned int GetID() override { return m_id; }

private:
    unsigned int m_id = 1;
};

void Example() {
    MySampler sampler1;
    MySampler sampler2;
    unsigned int id1 = sampler1.GetID();
    unsigned int id2 = sampler2.GetID();
}
```

## 相关文档

- [RHISampler 总览](sampler.md) - 返回类总览
- [RHISampler::GetNativeHandle](get-native-handle.md) - 获取原生句柄