I'm looking for usage reference on the ancient Mode7 EX Extension. Like how it interprets angles. I'm trying to use it on a '2.5d' game, but I can't get it to display at the correct angle. I've got a background in 3D modeling, I'm using software like Maya to reference angles and determine what 'should' be correct but I don't really know what this thing is doing anymore.
Here's a hastily photo-shopped 'reference for what I'm trying to do. I'm using art from Scott Pilgrim just to give myself visual reference for what's going on. I've found a few Mode7 EX examples online but they're all for cart racing games and even when i replicate their settings it doesn't provide meaningful interpretation of what those settings actually mean. For example X and Y are up and down and depth is Z in any 3D software, but Mode7 EX uses Z to simulate object volume rather than visual depth or distance. And it's included 'documentation' is basically 'Mode7 is cool, yay'. (it is cool.)