There is a lot of hardcoded dynamic F3DEX being generated for each level each frame. This page will serve as a document to keep track of everything that's going on during the level rendering.

0x80295A38 - The big function for level loading (not sure yet what everything does, but the big table that holds the pointers to level-specific render code is in it at 80295AAC)

0x80290DAC - This function appears to use the current level's surface information & rendering tables to determine which render group to use. This draws the level data around the current player.

Here I'll list a few of the hardcoded F3DEX commands that are written into the functions above:

Block Fort:

Skyscraper:

Double Deck:

Big Donut: