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N
no-I-ra
Participating Frequently
March 1, 2020
Answered

PS 2020 - 3D visible seams

  • March 1, 2020
  • 7 replies
  • 3045 views

Hello,

I tried to use Photoshop CC 2020 to paint a texture on a 3d model. The problem is UV seams are still visible, even if I use high resolution textures (8192px * 8192 px) and standard brushes. I made a test on a cube to explain this problem (attached image).

 

If I do the painting in ZBrush it works, so I suppose my mesh and its UVs are correct. But I need to use the cloning stamp tool a lot, and ZBrush is not efficient to do this.

 

So is there a way to get invisible seams in Photoshop ? If not, which other tool can I use instead of Photoshop and ZBrush ?

 

Thank you for your help.

 

This topic has been closed for replies.
Correct answer Ussnorway7605025

the workaround is to paint on the texture itself

 

https://windowsforum.com/media/workaround2-gif.756/full

 

note that the camera angle is what causes the bug... in effect you are looking at the pixels side on

 

7 replies

Ussnorway7605025
Ussnorway7605025
Legend
March 3, 2020

yes when you paint on the model itself you can get this effect with select area tool

 

 

Ussnorway7605025
Ussnorway7605025Correct answer
Legend
March 3, 2020

the workaround is to paint on the texture itself

 

https://windowsforum.com/media/workaround2-gif.756/full

 

note that the camera angle is what causes the bug... in effect you are looking at the pixels side on

 

N
no-I-raAuthor
Participating Frequently
March 4, 2020

Thank you very much for your help. Too bad the projection painting is based on pixels.

I think I will now use Substance for 3d painting that seams more efficient that Photoshop. 

Ussnorway7605025
Ussnorway7605025
Legend
March 2, 2020

I'm not able to get the result you talk about in this test file... even with 2020 which is the worst 3D Photoshop to use

  • is it possible you are looking at boundary lines i.e, the box Photoshop makes to show you the model?
  • or I notice you still use Tga files... are you converting them to Png first or just adding them as smart objects?

N
no-I-raAuthor
Participating Frequently
March 3, 2020

- If you paint a line that overlaps the face and the scalp you don't see any seam line ?

- I am not sure to understand what you mean about the boundary lines, but the seams I see are not boundary lines (there are visible in the texture).

- I first work with a png or bmp texture, then I convert it to tga (this model is a video game mod, so I convert textures to tga or dds to integrate it in the game). I didn't convert it to smart objects for 3d painting. I tried to create bmp textures and paint on it, but had the same issue.

 

Maybe my Photoshop configuration is bad for 3D painting ? Are there parameters to configure the projection painting ?

You say PS 2020 is bad for 3d : which version do you recommand ?

 

Sorry for all my questions...

 

andreamaestri
andreamaestri
Participating Frequently
March 2, 2020

Hi! If I'd need to paint textures my go-to tool would be Substance Painter, https://www.substance3d.com/ you can get 30 day trial, and you can see here, it does have support to Photoshop brushes https://docs.substance3d.com/spdoc/version-2019-3-188973873.html

    N
    no-I-raAuthor
    Participating Frequently
    March 2, 2020

    Thanks, substance is a good idea 🙂 

    Ussnorway7605025
    Ussnorway7605025
    Legend
    March 2, 2020

     

    sorry for the long | bad vids, I'm at work and had to borrow a pen... when I get home I'll fire up 2020 and see if I can make this rendor line you are getting at your end

    N
    no-I-raAuthor
    Participating Frequently
    March 2, 2020

    Thank you very much to take time to help me 🙂

    If needed, here is the Mesh v1 hair mask texture : Hair_mask.

    A
    Anonymous
    March 1, 2020

    "If not, which other tool can I use instead of Photoshop and ZBrush ?"

    You could try Blender 2.82, it has a texture paint clone brush and the good thing is it's free 😀

    https://www.blender.org/download/releases/2-82/

     

      N
      no-I-raAuthor
      Participating Frequently
      March 1, 2020

      Thanks I'll try with Blender if I have no other choice ^^

      Ussnorway7605025
      Ussnorway7605025
      Legend
      March 1, 2020

      I would need the model if you want to share it then I'm happy to test for you

      however in general;

      1. after adding a new layer, select the area you want to colour then paint the texture on the uv map
      2. when you are ready to see the result rendor... you can draw a sqaure around part of the model to only rendor what you need and save time but without a rendor Photoshop only gives a preview i.e, a guess
      3. there are major Gpu bugs in Photoshop that make it worthless for pro 3D work... I use an older build myself but you must tick the backfaces option in current builds because Adobe cut corners with testing

        N
        no-I-raAuthor
        Participating Frequently
        March 1, 2020

        Thanks, I tried the rendering method but seams are still visible....

        If you want to try, here is my model with its texture : Shepard_ME3_NewUV .

         

        This is what I attempt to do : I made a first version of the head mesh that uses only one texture for face and scalp (Mesh v1). But, I had to create another version of this model (Mesh v2) to split scalp and face in two textures. So I changed the UVs. What I want now is Mesh v2 looks like Mesh v1 with invisible seams between scalp and face.

        Ussnorway7605025
        Ussnorway7605025
        Legend
        March 1, 2020

        your image

         

        my image

         

        if you untick UV maps they go away... what I do is make a new layer for each texture colour

          N
          no-I-raAuthor
          Participating Frequently
          March 1, 2020

          Thanks for the quick reply.

          If I understand well, it works if I don't use the projection painting method or if paint directly on the texture. But I need to paint skin and hair on a 3d model with  a UV seam between scalp and face. So how can I get invisible seams between scalp and face if I don't use the projection mode to paint ? I precise the vertices between scalp and face are welded.

           

          Ussnorway7605025
          Ussnorway7605025
          Legend
          March 1, 2020

          this is what I see on your file but I will ask the other Acps for you

          p.s, Blender really is worth getting for anyone using 3D, its free & to be blunt... a lot more up to date than most the paid software around

           

           

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