禁用正向渲染添加通道。这会使这个着色器支持一个完整的方向光和所有逐顶点/SH计算的光照，使着色器变小。

Forward rendering additive pass. This makes the shader support one full directional light, with all other lights computed per-vertex/SH. Makes shaders smaller as well.

youdao

由于 水流的非正向入射，潮汐通道地貌 体系不对称，潮流三角洲在湾内东侧发育、在湾外东北侧发育。

The obliquely inflowing current forms an asymmetric geomorphologic system in the tidal inlet, the tidal deltas are more developed on the east side of inner bay and on the northeast side of outer bay.

youdao