Vertex colors vs. Texture map

armagon · Sep 2015

I've been learning a lot and trying to make structures similar to these: https://d2ujflorbtfzji.cloudfront.net/package-screenshot/1ec12fd6-f495-4fb3-81f3-701f3e346a10_scaled.jpg

However, i'm not sure if they are using texture maps or vertex colors. Which technique would be ideal for games? I've read that not all engines support vertex colors, but isn't that a basic feature for OBJ models?

leleuxart · Sep 2015

UVing a small texture(or a small area of a single, larger texture) would be much easier. In order to use vertex colors like that, you'd have to split up every single model that will use a different color, or add support edges everywhere, otherwise the colors will blend between the vertices.

antweiler · Sep 2015

If you can apply your vertexcolor to what Maya calls vertex-face, the colors dont blend.
Vertexcolor can be saved or baked into maps, and can be applied easily.
I did something similar in the past, and used vertexcolor to add variation to already textures roofs.The engine didnt support vertexcolor, so i added it to the (mental ray baked) lightmap.

Michael Knubben · Sep 2015

Yeah, look into face colours! Max has the same thing, as does Blender. I'd be surprised if Modo/XSI/etc. can't do face colours. The only 'issue' being that it creates double vertices at the borders, but given how much less demanding vertex colour is than textures, depending on platform that might be worth it.

marks · Sep 2015

Smoothing group splits create vertex splits anyway, so you're losing nothing on those edges.

Vertex colors vs. Texture map

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