docs: update RHI API docs

docs/api/rhi/sampler/get-id.md

@@ -4,16 +4,42 @@
 virtual unsigned int GetID() = 0;
 ```
 
-获取采样器 ID。
+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。
 
-**返回：** 采样器唯一标识符
+**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
-unsigned int id = sampler->GetID();
+#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