Question by Hellfire01 · Nov 22, 2018 at 02:47 PM · shader materials transition procedural-generation

how can I set multiple materials to a mesh ?

How can I place multiple materials on a mesh ? I do not mean using them all simultaneously but determining on what triangles what materials should be used and if possible use a coefficient ( having a material manifest lightly and an other one strongly for example ). I need to find how to do this as I am working on procedural generation and am trying to get a smooth transition from sand to grass ( as an example ). Looked at shaders but did not find anything looking like variable inputs. I saw shaders can look at the height of the vertices in order to make a decision on what material to use but I did not find anything about giving them something like an array of values in order to tell it what materials should be used where.

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dan_wipf · Nov 22, 2018 at 06:49 PM 0

you want a transition from material to material?

ecv80 dan_wipf · Nov 22, 2018 at 07:06 PM 0

Yeah that's probably not going to be possible, or is it? What about vertex colors? I know for a fact you can procedurally assign them to a mesh (I just don't know if that's the case with materials although I would think so). Vertex colors do transition and might get you the effect you're after.