Hi, I'm a newcomer, and I've still quite a noob with Gmod (I've been toying with it just a few days), but I'm learning at a decent pace, I think. Forgive my grammar if you see any mistakes, my english is mediocre at best.
Well, let us proceed to the main problem:
Recently, I saw this amazing picture of that famous Sandra gmod character:
I know that the author (who i know that is a remarkably important person around here xD) simply used a Gimp trick to make the dress transparent, but I really wanted to reskin her dress to look like that without need of image editing, because, you know, is really hot xD.
So I've been doing my research about how to modify the alpha channel of her dress texture, but I've been unable for now, and I don't really know if It's posiible. These are the steps I followed. Remember, I'm a complete noob:
0-) I assumed that Sandra's dress texture is LDress.vtf
1-) I installed Vtfedit (the old 1.2.5 version, since 1.3.3 does not work for me), and certainly, it seems that I was right about LDress.vtf being the right texture file. I exported LDress.vtf as a .tga image file, LDress.tga
2-) I installed Paint.net (I didn't wanted to install an extremely heavy program such as Photoshop for an edit I expected to be really simple), opened LDress.tga, went to Layer properties (F4 hotkey), and changed Opacity (image's transparency) from the default 255 (competely opaque) to 112 (which should be quite transparent).
I saved the .tga file, and obviously chose to save it in the 32 bits format, not the 24 bits format. The resulting .tga file still occupies exactly the same memory as the original .vtf file, so I don't think any information was lost in the process.
3-) I imported again the .tga with Vtfeditor, changing the alpha format to RGBA8888, (the same one that Vtfeditor claims that the unmodified LDress.vtf has). I pressed Ctrl+Shift+A to check if the alpha channel was changed, and it was competely grey, insted of completely white, so I assumed that it worked.
4-) I replaced the original texture with the resking and tested it on Gmod... but it does not seem to work D: Her dress is as opaque as always.
So if any one knows how to make transparent reskins, I do hope that you can help me. I don't really require a solution for Paint.net, so I any working solution for other programs, such a Gimp would be much appreciated. I would rather not install Photoshop, since it's huge. But i'm a complete noob in all of them.
Or maybe I'm not importing well the .tga with Vtfeditor?
A noob-friendly explanation would be really nice.