Tracking: Research MDX geosets draw order (Shimmering Portal and Spirit Wyvern)

[flowtsohg]

Warcraft 3 has some extra sorting when rendering geosets.
Based on what? unsure, but most likely extents.
Shimmering Portal changes the order such that when you view it from behind, it will still render correctly.
Spirit Wyvern would work intuitively...if the geoset order was reversed. Otherwise it's a foggy mess.