When I was searching for the right address, this was the first one that came up after doing several comparisons between different matches on both flat and depth stages.
Also, the only thing I tested was making characters flat on certain stages (custom stages that is), and that one did work. I don't know if it works the other way, though.
Also, I've noticed that flatness isn't defined by the rel files at all, but by the stage number, so somewhere in the game there is a general table of basic stage settings per stage that should be set before the stages are loaded.
Anyway, after testing it myself, I found that the code actually does exactly what flat stages do. The code makes everything flat except for certain things like effects and billboarded entities (naturally, since billboards are always supposed to be facing the camera). I might try to find a method to make even effects flat, which could mean that the vanilla flat stages can be even more flat.
Also, the only thing I tested was making characters flat on certain stages (custom stages that is), and that one did work. I don't know if it works the other way, though.
Also, I've noticed that flatness isn't defined by the rel files at all, but by the stage number, so somewhere in the game there is a general table of basic stage settings per stage that should be set before the stages are loaded.
Anyway, after testing it myself, I found that the code actually does exactly what flat stages do. The code makes everything flat except for certain things like effects and billboarded entities (naturally, since billboards are always supposed to be facing the camera). I might try to find a method to make even effects flat, which could mean that the vanilla flat stages can be even more flat.