is Thirdwires Spec/Bump maps the same as most other Games?
im able to use BMPs (and even JPGs), for bump and spec map in other games i mod for.
In 3ds Max, for bump maps, i use black & white mappings, where grey would be 0, black would be negative height, white would be positive height,
for spec maps, i use black & white mappings, where white is 100% specular, black is 0% specular.
the other games i mod for read these correctly with some minor adjustments.
ie..base grey background, panel lines would be black, rivets would be white.
Bare Metallic areas would be white, while painted areas black/dark grey.
i think i tried exporting Spec and bump maps on one of my models to TW's engine and it didnt work, dont remember..