Edit: This thread quickly degenerates into an unproductive flame war, I have summarized the information here to save the community the displeasure of reading the whole thing.
Sculptris offers a great work-flow for creating low poly meshes from start to finish including textures. However there are some drawbacks: there are some unanswered questions as to the suitability of these models for animation. Also the auto-generated UVs are inferior to manually generated UVs.
- *Extremely fluid workflow, easy to use.
*Exports models into Unity compatible .obj format
*Auto-generates UVs so you can paint textures and normals straight onto the model using your own custom brushes.
*Builds meshes with tris which will have better lighting than quads.
- *As with any sculpting tool you cannot use it to create flat planes for buildings, it's more suited to organic shapes.
*Auto-generated UVs cannot be reused for other models like manually generate UVs can be.
*Auto-generated UVs make it difficult to reskin a model.
*Auto-generated UVs don't allow you to dedicate more texture space to high detail areas such as the face.
*Models lack proper edgeflow, it is widely believed that this could be problematic when animating
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I came across a free modeling tool 'Scuptris'. I've been playing around with it a little bit and it's pretty simple and easy to use.
It only exports to .obj which Unity can only import as models, without textures. I'm not even sure if .obj format supports textures.
It is in alpha and it's worth mentioning I did experience a bug where some polygons went through a mesh. It says on the homepage:
"I've released an alpha version that is available for anyone who wants to try it out. Be aware that it's an early build though, and it is known to crash and misbehave occasionally. Save your work often to avoid getting burned."
I'd say it looks very promising and worth checking out.[/list]