Combine multi texture in one folder with regular expressions names.
11 times faster than Texture Set Combiner with multi-threads. (40s vs 7min31s)
Works with Textures Export with Alpha (Mainly for Substance Painter).
Test in 39 Texture Sets , 234 8k imgs to 6 imgs.

The only thing you need to do is edit config.ini with your renderer

e.g. prman (Default Color for OpenGL Normal is Hex RGBA: 7F7F7FFF):
SOURCE_DIR = r"D:\texture\test1"
DESTINATION_DIR = r"D:\texture\test1_combined"
BASE_NAME = "Friston-3"
TEXTURE_PATTERNS = [
("_Diffuse.png", BASE_NAME + "_Diffuse_srgbtex_acescg.png", "#000000FF"),
("_Emissive.png", BASE_NAME + "_Emissive_srgbtex_acescg.png", "#000000FF"),
("_Specular.png", BASE_NAME + "_Specular_srgbtex_acescg.png", "#000000FF"),
("_Normal.png", BASE_NAME + "_Normal_raw.png", "#7F7FFFFF"),
("_Displacement.png", BASE_NAME + "_Displacement_raw.png", "#7F7F7FFF"),
("_Roughness.png", BASE_NAME + "_Roughness_raw.png", "#7F7F7FFF"),
]

Currently release on windows. you can recompile that easily to linux.

\

edit config.ini and hit run

todo:
UDIM support (you can write it manully if your model with a tiny number of udim sets)
Texture format other than png.