>>531522807
Someone discovered that one of the released executables did not have the debug symbols stripped out. I put the symbols in Ida and then just started naming variables, defining structs based on how the data was laid out, etc. And eventually its pseudocode functions look like pretty reasonable C. After that it isn't too much work to bring them to actual compileable C.

These software polygon rendering functions were a real pain in the ass though because Ida barfed on them and instead of giving me temporary variables I just got a bunch of stack pointer offsets. If that wasn't bad enough making the output unreadable, I also had to deal with some absolutely mental 64-bit pointer math designed to write multiple pixels at a time from interleaved texture data at a DOS memory selector location (16-bit). I changed that all to a regular ass pointer to a regular ass texture but I still had to pick that shit apart.
look at this fucking shit https://files.catbox.moe/tusvt5.PNG
look at it https://files.catbox.moe/judrqh.PNG

Normally Ida output looks like pic rel.