UE4 tiling problem

ArcaneLeo

hi, i have a problem with ue4
im use 3dmax for modelling, and use tiling in max, but when i export it to ue4
the tile didnt match, and i use same tile number on both
it became a disaster because i create a hole on the wooden wall, but the hole didnt match the texture

the model was unwraped without problem
there no diferent between 3dmax uv and ue4 uv

i know i can tile it if i scale the object past  -1,1
but i can't use  mask map if the object past -1,1

Obscura

Such a disaster. How did you apply that tiling in 3dsmax? By scaling the uvs, or by typing some tiling value into somewhere?

Could be just a float precision problem though. Have you tried enabling "use full precision uvs" on the mesh in Unreal?

TheGabmeister

Or maybe you also placed a value in the offset parameter in 3ds Max?

ArcaneLeo

obscura:
 the UV are good, just the two of software use different method of tiling
In ue4 UV 0,0 point is top left, not bottom left

TheCabmeister:
no, its zero,but anyway i solved it by add 0.025 value to max UV offset
when i export it to ue4, its look same

Obscura

That really depends. The uvw xform does it like that. The material editor scales it compared to the center of the uvmap.

Anyways, if adding 0.025 fixes it, it definitely sounds like a precision issue to me and you should check out that checkbox.

Obscura

You can also get it having the "center" in the bottom left corner if you want to. Just add 0,-1 to the texture coordinates. Now the center is in the bottom left corner and tiles from there.

Obscura

Like this...

To change center position, you can go to negative spaces. To get it on the bottom right, you would apply offset of -1,-1.


https://www.youtube.com/watch?v=-V8_SffuGaw&feature=youtu.be

ArcaneLeo

thanks, yeah that was work, thanks for the info
it help me a lot