udim mesh

[Abilio5EC9]

hello

I'm trying to use the feature: UDIM MESH on an object made in Blender.
but when I do a curvature bake in : substance designer the result is all messed up, like in the image:

How can I use UDIM correctly?

thanks

[Abilio5EC9]

In fact I wanted to greatly increase the resolution of the textures.
for this I want to go beyond the edges of the UV using UDIM .

it's possible ?

thank you

[Cyril Dellenbach]

Hello @Abilio5EC9,

Thanks for the message.

This is possible to increase the texture resolution using several UDIM, but you can't simply rescale the UV islands out of their UV tile.

Using UDIM isn't rescaling your current tile for a bigger one, it is adding new tiles to the 3D model. E.g. if you have a 1024x1024 texture and you add two new UDIMs, you'll now have three 1024x1024 textures. Therefore, the UV islands must behave as usual, not spilling out their tile and taking as much space as they can in their respective tile.

For the messed up result you showed us in your first message, this is due to the fact that Substance Designer can't currently work on multiple UDIM at the same time, so you'll only be able to display one udim at the time. I advise you to check this tutorial on the subject.

Best regards,

[Abilio5EC9]

I'm getting checkered results like in the image:
How can I have more resolution and avoid these grids?

thanks

[Cyril Dellenbach]

Can you share a little bit more on the project? What parent size are you working with?

Are you working with Baked maps? What are their resolutions? Can we have a closer look at your UVs as well?

Let me know.

[Abilio5EC9]

parent size: 2048

I'm using bake yes

resolution: 2048

the uv is below

thanks

[Cyril Dellenbach]

Hi Abilio,

From what I can see, it looks like your UV islands are overlapping, which will result with unwanted artifacts. Make sure the islands aren't crossing each other, and I also advise you to keep a margin between the islands (also to avoid artifacts).

Would you mind sending me the 3D model you're using for your project? This way, I'd be able to give you a proper help. You can send it to me at cdellenbach@adobe.com

Best regards,

[Abilio5EC9]

I have already sent the 3d model to your email.
you received ?

thanks

[Abilio5EC9]

In substance designer, is it necessary for objects to have the back part, the part that the camera will not show?
Is it necessary for objects to be completely closed?

thank you very much

[Abilio5EC9]

If I cut a plane in half to fit better in a UV, will I have problems when texturing in Substance?
Is there any procedure to prevent the seam from showing?

thanks