Post by Remi Arquier on Jul 11, 2017 9:21:26 GMT
Hi Steve,
Welcome back to the forum, I am happy to see you again. Did you tried Unfold3D Virtual Space ? It contains some features that come from your requests.
Yes, that topic is interesting and the solidangle link well expose the subject. From my understanding, Arnold -and it should be the case for other renderers- have an option allowing to an select "UV smoothing mode". This option select the way UV are smoothed for the computation of the UV derivatives. (For the people who don't know, It means that the option has an influence on the shaders that are using UV derivatives, like anisotropic shaders. In those cases, the UVs have an unusual aim: they don't support texture properties like color or normal maps, but rather they are used to specify a *direction field*. Anisotropic shaders usually use the direction field to define the reflectance properties of the material you want to simulate).
Steve, you propose to introduce a way to set the UV smooth mode directly into Unfold3D ? That could be a nice option. However, there is no standard way to specify that in OBJ nor in FBX and therefore I don't see how Unfold3D could transfer that property to the renderer.
Cheers
Welcome back to the forum, I am happy to see you again. Did you tried Unfold3D Virtual Space ? It contains some features that come from your requests.
Yes, that topic is interesting and the solidangle link well expose the subject. From my understanding, Arnold -and it should be the case for other renderers- have an option allowing to an select "UV smoothing mode". This option select the way UV are smoothed for the computation of the UV derivatives. (For the people who don't know, It means that the option has an influence on the shaders that are using UV derivatives, like anisotropic shaders. In those cases, the UVs have an unusual aim: they don't support texture properties like color or normal maps, but rather they are used to specify a *direction field*. Anisotropic shaders usually use the direction field to define the reflectance properties of the material you want to simulate).
Steve, you propose to introduce a way to set the UV smooth mode directly into Unfold3D ? That could be a nice option. However, there is no standard way to specify that in OBJ nor in FBX and therefore I don't see how Unfold3D could transfer that property to the renderer.
Cheers
