[1.12.2] load obj models (not for items/blocks)

[eatthenight]

so i added a layer to the player and i want to render an obj model i made based on values in my player capability, how do i load obj models and render them? i read that you have to write your own parser but as i have no clue to how to do that are there any tutorials or maybe open source code i could use for reference? i dont know much about opengl rendering outside from basic minecraft stuff so this is difficult for me thanks

[eatthenight]

rendering the obj model as an entity would work too but i really dont know where to begin, so would be nice if someone can help me out.