Do you happen to have the source code of both modifications (HLSL/ GLSL [if applicable for Linux/ Mac OSX] shaders included)?
Assuming it is for your personal use, you must pack the mesh, its material and texture entry into a BRF file registered in module.ini of your target mod which also must have the right texture in its Textures folder. If the issue still persists, you may try changing the shaders to ones found in core_shaders.brf or its counterpart of your target mod; you may also port the right shaders if the initial mod has its shaders published.
Thank you for your gentle suggestion.
The problem with shaders is gone for good now.
However, the problem of loading textures is still persisting.
Originally, I thought shaders are the causes of missing textures. However, now that shaders are completely gone, the missing texture problem is still an issue.
I've tried to do the following to circumvent the problems.
I delete all meshes and create new one, linking them to the correct textures.
These meshes don't have:
DiffuseA
DiffuseB
Bump
Enviro
Specular
If they are set to "none" or "0". Everything is fine.
But if I try to reset them so that they resemble the original deleted meshes, the game couldn't load the textures and blank out.
Here are some images of the Stahlhelm:
Image mb15 hosted in ImgBB
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Image mb13 hosted in ImgBB
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Image mb14 hosted in ImgBB
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With the greatcoat, if I just port meshes and textures to my personal mod, it only load textures of the greatcoat, but not cartridge pouches and belts.
Image mb11 hosted in ImgBB
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Image mb12 hosted in ImgBB
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Funnier, the models of backpacks, straps, belts and cartridge pouches are all detached from the coat.
Now, if I delete all meshes of belts, pouches and straps, re-create them without specular maps or Diffuse, then it works.
But the result is very flat and unpolished
These are textures that are flat and unpolished, but are loadable in-game:
Image mb16 hosted in ImgBB
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Image mb17 hosted in ImgBB
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Image mb18 hosted in ImgBB
ibb.co