球面反射/环境贴图技术（SEM）是一种模拟光照算法中高光反射的快捷方法，在特定的使用场景中，甚至可以模拟完整光照实现效果。

Test post for style

Demo post displaying the various ways of highlighting code in Markdown.

This theme supports link posts, made famous by John Gruber. To use, just add `link: http://url-you-want-linked` to the post's YAML front matter and you're done.

A ton of text to test readability.