More than one UV set on one surface

Jovanni

Hi there. I would like to use a different UV set for a bump or top coat.
That is, the shader should have an additional drop down list of UV sets for bump for example.
Is there such a shader to buy from the daz store or a custom shader somewhere here? 

Richard Haseltine

It would be nice (I think) to have the UV set be an image property rather than a surface property (that is how other 3D applications that I have a passing aquaitnance with tend to handle it) but it would, as far as I know, require a change in DS as I don't believe shaders have any way to access the alternative UV sets posessed by a model.

In some cases an alternative might be to use a Geometry Shell, which can have a different UV set assigned.

Matt_Castle

This would definitely be a welcome feature (it seems like something that could plausibly be set in the image editor like individual map tiling), but it is not currently a feature.

So yes, there's two half options if you need a different UV map - use Map Transfer to bake the map to the UV you are using, or use a geoshell.

Doc Acme

Maybe Richard knows. Often when I export via FBX, the resulting geometry will have UDIM tiles for the UV's. Does DAZ have access to those or does that happen strictly upon export?

Richard Haseltine

Doc Acme said:

Maybe Richard knows. Often when I export via FBX, the resulting geometry will have UDIM tiles for the UV's. Does DAZ have access to those or does that happen strictly upon export?

UDIMs are nothing special - theya re just adding an integer valuer to the U texture coordinate (well it could be the V too - but usually it's U). DS already knows how to read values greater than 1, though soem plug-ins do not - in the past using out of bounds UV coordinates was a way to have tiling before it became a material setting. UDIMs are just an adaptation of existing festues for a specific purpose.