I can’t figure out what issue that is?
ZTool for download: 1MB
https://mega.nz/file/H7pFyDJb#yKySVu4YAvnfeZcB-tvm3NRnwJ5mVf6gvLan1abv78Y
Thanks for any little help,
appreciate it.
Hello @FattyBull ,
What appears to be happening is that your mesh has different materials applied to it on different vertices. Polypaint can store color or material information or both. While I can’t tell you how the mesh came to be this way, it looks like a few points have the red wax material applied as polypaint, while others are merely displaying the active material selection. When the mesh is subdivided, those points that have the red wax applied are multiplied, and slightly increase the area on the mesh assigned to red wax.
You can test this by disabling the paint brush icon in the subtool entry for the active subtool in the Subtool List. This will disable any applied polypaint and the mesh will then only display the actively selected material. If those “artifacts” disappear, then they are indeed the product of applied polypaint. You can correct the issue by setting the active channel to “m” for material, and using the Color> Fill Object function to fill the mesh either with the desired material polypaint, or filling with the “Flat Color” material to clear any material polytpaint.
The curious thing here though is why the red wax polygons are not visible until you subdivide, as if only a single vertex here and there is painted. That would not be the typical experience and I don’t know how you arrived at this point. You should smooth the mesh and examine it closely for topological issues. It’s possible that there are tiny polygon slivers along the edges of some polygons that contain that paint information that may not be visible to the naked eye.
It’s also possible that you ended up with some mixed up assignments from defining paint or polygroups at a higher level of subdivision then reducing polycount. Generally you want to work in the other direction–assigning polygroups at lower level and subdividing up. If you define at a higher level of subdivision the polygons targeted may not reduce cleanly at lower levels of subdivision, resulting in shifting borders.
Please contact ZBrush Support for any further assistance or if you’d like us to examine a file.
Good luck!