PS 2020 - 3D visible seams

[no-I-ra]

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.

[Ussnorway]

your image

my image

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

[no-I-ra]

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.

[Ussnorway]

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

[video]

[Ussnorway]

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

select area to be painted

do a full or part rendor

major bug = click backfaces

[no-I-ra]

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.

[Guest]

"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/

[no-I-ra]

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

[Ussnorway]

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

[no-I-ra]

Thank you very much to take time to help me 🙂

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

[andreamaestri]

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

[no-I-ra]

Thanks, substance is a good idea 🙂 

[Ussnorway]

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?

boundary linestest rendor

[no-I-ra]

- 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...

[Ussnorway]

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

select area bug

[Ussnorway · Accepted solution]

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

[no-I-ra]

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. 

[Ussnorway]

yes [right now] Substance is better than Photoshop but be aware that Adobe owns it now so don't expect any new dev