How to add NiAlphaProperty to BSSubIndexTriShape?

[Belthan]

I'm trying to add an alpha property to a a BSSubIndexTriShape block. Right click the block, Block->Insert->NiAlphaProperty creates a new NiAlphaProperty, but it's added as a child of the scene root rather than the BSSubIndexTriShape block. Using NifSkope 2.0.0 Pre-Alpha 4.

 

EDIT: Never mind, figured it out. For anyone else who has the same question: go to the BS Properties list in the BSSubIndexTriShape, add the index of the new NIAlphaProperty, and there you go.

[Belthan]

Okay, so I figured out how to add the alpha property, but I'm still having problems. I'm trying to make a "cutout" in the back of a dress, but it isn't becoming transparent. I have the following:

 

- The BSSubIndexTrishape block in the nif has NiAlphaProperty with flags=4844, threshold=0

- The material (bgsm) file has Alpha Test checked and is pointing to the correct dds files

- The diffuse dds has an alpha channel with transparency where the cutout should be

 

But... the dress still doesn't have the "cutout" in game. Any idea what I'm missing?

[rickerhk]

Every Skyrim nif I've seen uses a threshold of 128 for cutouts. Did that change for FO4?

[Belthan]

Changed threshold to 128 but no difference.

 

EDIT: Okay, after a little more experimentation I increased the intensity of the alpha channel in the dds and the cutout is now transparent. Yay! Which brings up another question that I will ask in a more appropriately named thread. Thanks for the assist, rickerhk.