批处理几何体花费的时间。批处理动态几何体比静态几何体成本要昂贵得多。
Time spent batching geometry. Batching dynamic geometry is considerably more expensive than batching static geometry.
如果你只使用静态几何，你应该保持这个数字低于10000，但如果你有大量的蒙皮几何体，你应该保持更低。
You should keep this number below 10000 if you use only static geometry but if you have lots of skinned geometry then you should keep it much lower.
了解遮挡剔除的好处，在复杂的静态场景的情况下，有很多遮挡，用它来减少可见几何体的数量和绘制调用。
Learn benefits of occlusion culling and use it to reduce amount of visible geometry and draw-calls in case of complex static scenes with lots of occlusion.
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