Decal not working on MeshPart

Help and Feedback Art Design Support
#1

Hey there!

So i had a problem in this post, and so to fix it i used a method to make the paper image into a 3D mesh in roblox through blender. Unfortunately, i suck at blender, and this is my first mesh i have ever exported into roblox. For some reason, when i put the decal on the 3D paper, it wont do anything. Also one side is only visible (isn’t really a problem but could be related to the decal problem)

Here’s the 3D paper:

image

Here’s the decal:

image

Any help would be appreciated! :+1:

#2

Since you are using a mesh, I would recommend using the decal as a TextureId for the mesh. And the only-1-side-is-visible problem, that’s because of the normals.

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#3

When i use the decal as the TextureID it just goes invisible and this pops up the output:
image

Nevermind i reset Roblox Studio and now this comes up:

image

#4

Hmm is the paper flat or a thick part?

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#5

Its very flat.

(30 charsssssss)

#6

Go into blender → UV Editing tab, select the paper, go into Edit mode, select all the vertices, press U and choose Unwrap. And then insert that decal into blender and try aligning the decal with the UV that you just unwrapped. Finally, export that decal that is aligned and put it in the TextureId.
EDIT: Oh yeah, export that mesh again because probably, the previous mesh wasn’t UV unwrapped.

2 Likes
#7

@IocaIe, Unwrapping your mesh is much easier than sufering with decals, but yeah if you like it that way, then go ahead.
w

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#8

For some reason when i press U it doesn’t do anything.

This is what it looks like at the moment:

image

image

#9

You got to convert the curve(the paper) into a mesh first.

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#10

I don’t really get how i’m supposed to map out the paper texture on this :sweat_smile::

image
image571×571 12.3 KB

#11

Press numpad 7 to view the paper directly from the top, and go to UV > Project From View (Bounds). It’ll give you something closer to what you’re looking for.

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#13

May i ask what you mean by ‘offset the part by .001’?

#14

I don’t have a numpad on my laptop. Is there any other hotkey i can use?

#16

I also need to add another decal over the paper (player icon) and a SurfaceGui with a TextLabel (player name), which will still make the transparency thing happen. That’s why i’m trying to get the Paper on a fully visible mesh.

I’m not too worried about the amount of triangles the paper has, this is a one off. I shouldn’t really be using other complicated meshes later on in my game.

I may have misunderstood what you are trying to tell me, if so, let me know.

#18

Ohhhhh i think you’re getting ‘depth-sorting error’ (as said from one of the replies from the post i linked) with Z-fighting confused. The problem still applies even if the ImageLabel is far from the paper image. Don’t you get the problem when you look at the paper from different angles with a decal on a separate part behind it?

I’m still trying figuring out new things about this problem, so i may be wrong.

Also could you possibly make that paper example a free model?

Thanks for the help! :+1:

#19

SurfaceGui.AlwaysOnTop true should fix that problem. This will make it clip through geometry like walls too so that is probably not what you want. You might want to forward that to the engine team but there’s a solid non band-aid way to achieve this that is just as good if not better.

GuiObjects like TextLabel, ImageLabel,… have a parameter called ZIndex that will basically tell which object(s) of your GUI is to be layered first.

The following model uses a SurfaceGui that will display the entire thing seperated in three parts:

  1. Paper (ImageLabel, ZIndex = 0)

  2. Thumbnail (ImageLabel, ZIndex = 1)

  3. Username (TextLabel, ZIndex = 1)

You can level it with a textured wall and it will still show on top with no transparency issues.

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