Compiles fine but crashes instantly when i load the exe ?.
I noticed that you where in Progress of porting it to SDL2 as well though its not used atm, dhewm3 should be helpfull getting that part working.
Looked over the loaded glsl scripts an so far all but the gui stuff and splitscreen is used, i scratched my head a bit about it not using the glsl shaders in materials (its a 4 line change and its the only part of the code in bfg that differs there) Work in Progress maybe ?.
Atleast good that someone finally got around to try out this approach

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