Sculpting alpha brush does not work

Development Pipeline & Plugins
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1

Hello, I am currently working on a landscape, and I want to use the sculpting alpha brush tool to make some mountains and hills, but when I tried dragging the image onto the little pannel where you drag & drop your images it shows up green BUT when I release the LMB it is just the DefaultAlphaTexture and not my image.

252948-3.jpg
252948-3.jpg1920×1080 319 KB

So I tried another image, wich is also b/w and this works.

252949-1.jpg
252949-1.jpg1920×1080 306 KB

I checked the “description/details” of both images and they’re identical.

252950-2.jpg
252950-2.jpg1920×1080 305 KB

So I don’t know what is wrong… Could anyone help me?
(I apologize for my bad english)
thanks :slight_smile:

2

I’m having the same issue. If anyone has a solution please let me know!

3

I also am having this issue. Hope they can address it soon.

4

You must save your alpha as 8 bit before importing to UE4.

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5

You must save your alpha as 8 bit before importing to UE4.

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6

The texture must have the following qualities to be used as an alpha for sculpting landscapes:

  • RGB, or RGBA. Greyscale does not work.
  • 8bit.

The image format is not restricted to TARGA (.tga). PNG and JPG works too.
Non-Square resolutions work as well.
The compression format does not matter.

I personally use substance designer for texturing. In this case, you would make sure that the output format is “C8.”

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8

Hi.
I was using UE5 and try to create landscape with alpha. And i’ve got the same problem.
I’ve tried two days, finally I realized if you import a .png file to UE5, no matter how you set the picture format, whether if it is a 16 bit or 8 bit , RGB or Gray, it just doesn’t work. But if you import a .jpg file it will magically work. Maybe .tga file will work too? I didn’t tried that.

I’m not sure about if it’s working on UE4. Cause I 've never noticed someone mentioned this. So I believe this is a bug.

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