I must ask about it. Let's say I have low-poly model as base mesh.
First I sclupt it in zbrush.
2. I want to decimant it to fairly low-poly model.
3. Next I want to unwrap it in some external app.
4. Now the big question. Is it possible to import decimated model into zbrush again, and bake detail from first pass ?
Or should I first retopo decimated mesh, uwrap it and then import to zbrush ?
Yeah I know I can bake detail in 3ds max or even xNormal, but first one alawyas generate problems on normals.
Replies
Most of the time the results of decimation are generally not suitable to unwrap and use as a base. And while details can be projected from one tool to another, the whole point of Decimation Master is to preserve the surface detail in the first place, so I don't think there would be much to gain from projecting the original sculpt onto the decimated version. Unless you're talking about extreme polygon reduction to the point where the surface detail is lost, but if this were the case you'd probably be much better off just using the original base mesh instead, or retoplogizing/optimizing it on your own like you hinted at.
But I see it cloud be a problem to transfer detail to triangulated mesh within ZBrush.