docs: update RHI API docs
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docs/api/rhi/opengl/buffer/unmap.md
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docs/api/rhi/opengl/buffer/unmap.md
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# OpenGLBuffer::Unmap
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```cpp
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void Unmap() override;
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```
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取消映射缓冲区,使数据对 GPU 可见。
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**示例:**
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```cpp
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void* data = buffer.Map();
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if (data) {
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memcpy(data, vertices, size);
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buffer.Unmap();
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}
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```
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## 相关文档
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- [OpenGLBuffer 总览](buffer.md) - 返回类总览
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- [Map](map.md) - 映射缓冲区到客户端地址空间
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