I’m having trouble with UDIMs from Substance to Blender.
I did a careful unwrap, packed the meshes nice and neat with UVPackmaster Pro, different tiles for different textures, Imported and baked in Substance no problem, textured no problem…
But when I came to put the textures back on the model in Blender, it isn’t matching up.
Well correction, some parts are matching up some parts aren’t.
When I load the first UDIM tile up into UV Editor to take a look, it lays out all 63 tiles, but as I take a closer look I can see that some tiles look fine, other tiles…
Any ideas? I assume, that there is something changing some of the tiles after I export from Substance… UDIMs are giving me bloody nightmares so any help is greatly appreciated.
It’s actually more like the UDIM texture isn’t right rather than the mesh is in the wrong place. The green should have considerable dirt and edge wear and on close examination of the textures I don’t see any. The brown tiles for comparison,are half correct, including dirt etc.
Could the issue be your UDIM texture import? I assume you’ve verified your UDIM textures are named/numbered correctly and that you’ve set up the textures as UDIMs correctly? Even with the correct settings, when I’ve added UDIMs to materials by dragging them into the node editor, I’ve had them fail to stick to the right UDIM slot probably about half the time.
This was not a substance issue in my case, as the textures in question weren’t produced with Substance.
What Blender Version are you on?
I had some problems recently too, Blender just wouldn’t load the UDIMs, just the first one (1001) ignoring the rest.
Switching to a newer Blender version did the trick, I was on 3.01 where it didn’t work correctly, going straight to 3.2 and the problem is no more.
They worked great going into Substance, all clean no problems, looks fine after being textured in Iray in Substance. But moving back seems to create a problem. Looking in UVEditor the colors look right, green is on the right UDIM squares for example, but the texture is just wrong.
At the start of a new Substance project I noticed there is a Blender template, I don’t know anything about this however I was just using default Metallic Roughness, not sure if it will help.
Then I am out of tips, but I am pretty sure that its not a problem of the packing/Udims nor the textures or anything you did.
Its a Blender problem - if you would export your mesh with textures into another 3D package, it’ll work. Substance is the proof, if it works there, then where exactly IS the problem then?
Can only be user error - you messed up some settings ( I doubt you did) or its a glitch in the program (which is in line with my observations…).
Sorry, can’t help fixing it, …
Yeah you might be right mate. So I just tried importing the green texture on it’s own (but still in it’s UDIM format just separate from the other textures) and it worked… so I guess for now it will have to do.
Would be great if the Blender Gods could work on Blender’s UDIM functionality a bit.
Conclusion for anyone who has the same problem, I had to export each texture separately from Substance Painter, into separate folders for each texture.
It was a pain in the ass, but seems to have worked… so far.
