RailRenderLayers :: struct
| stone_path_lower optional | :: RenderLayer | |
| stone_path optional | :: RenderLayer | |
| tie optional | :: RenderLayer | |
| screw optional | :: RenderLayer | |
| metal optional | :: RenderLayer | |
| front_end optional | :: RenderLayer | |
| back_end optional | :: RenderLayer | |
| underwater_layer_offset optional | :: int8 |


