hidfan

have you ever considered just converting the original normal maps from doom 3? that would definitely speed up the process.

yes, the tedious tasks I identified are
1-to rematch doom3 texture names with D3RetroTex names.
(using substance tools to generate a heightmap from those normal maps would be an "easy" way to get decent displacement too.)
2-write all shader/texture files.
 

for sure huh? generating with the normals would make things way easier.

i actually have an idea for the texture files (like scaling for instance) that could make it insanely easy. we use the original texture file you made (that was probably a huge pain in the ass by the way, and i respect your work haha)  we add // to the end of each texture name (we as in i can do it :) ) and then we add NO or SP to the file name (designating spec or normal maps) using notepad++ to automatically add it to the end of the file extensions with // at the end of it.

then go abck through and remove the // automatically with  the replace function.  it would cut down on time big time. hopefully that makes sense.

the hardest part is matching the names though...thats a pain in the ass hahaha.