This is faster, but view direction is not entirely correct when camera gets close to surface.

这样更快，但是当摄像机接近表面的时候，视图方向不完全正确。

youdao

This is faster, but view direction is not entirely correct when camera gets close to surface.

这样更快，但是当摄像机接近表面的时候，视图方向不完全正确。

youdao