About exporting from zbrush 2020 into sketchfab: problems with textures & UVs

Stephen_Cruz · August 5, 2020, 8:10pm

Hi, Ive been trying to export my model from abrush2020 into my sketchfab account. Ive been successful in exporting the model and texture maps but have encountered a problem with preserving the tiling of the texture when I export it. Specifically I have a floor texture with the tiling in zbrush but when I export it in sketchfab , the tiling is gone. There does not seem to be any way to change or manipulate the uv’s in sketchfab and I’ve tried many iterations of chnging the uv’s and texture maps in zbrush 2020 but I keep on encountering this problem. How do I fix this?! here’s 2 Jpeg files that show the results
Floor tiling in Sketchfab|1068x740

Spyndel · August 6, 2020, 5:23pm

Hello @Stephen_Cruz

I made a quick Sketchfab account and uploaded this tiled sphere as an .obj via Tool> Export( if you adjust UVs in ZBrush, then the geometry needs to be exported directly from ZBrush to save the adjusted UVs) from ZB2020.1.4 without apparent issue:

tiletest

Likewise, there were no problems importing it into any other program I tried.

I can only suggest there may be something problematic with your geometry or UVs. It might also be useful to describe how you are exporting your model.

Otherwise this is an issue with your target application, and any questions or issues regarding its use should be directed towards Sketchfab support resources or other Sketchfab users.

If you’d like to bypass the need for tiling altogether, you can convert the applied tiled texture into polypaint in ZBrush. Remember that polypaint detail depends on mesh resolution, so your mesh will need to be subdivided sufficiently to capture all the tiled detail. Topological quality concerns also apply, so if your polygons are non-square it may lead to suboptimal results.

Once converted to polypaint, you can create a new texture based on that polypaint without the need for any tiling. If exported and imported correctly, any program that can display a UV texture map should then be able to display your desired results without the need for any tiling.