How to get vertex color before assigning color via Mesh.colors?

Question

I have a mesh that has vertex colors already painted in (from Maya). I can confirm they are there using a shader to see vertex color. Is there a way to sample those vertex colors from a script using the Mesh.colors api? It seems like that array of colors is empty until I assign it a new array of colors.

Same question worded another way: I want to get the vertex colors of a mesh via script, as the mesh currently is. I don't want to assign a new array of colors (which would override the current vertex colors) in order to sample them. Is there a way to do this?

Answer 1

Answer by Bunny83 · Mar 19, 2020 at 10:58 AM

If the mesh is imported in Unity, make sure you mark it as readable in the inspector. You can check if a mesh is readable with the isReadable property.

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Jagrafess · Mar 19, 2020 at 11:01 AM 0

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That's just the "Read/Write Enabled" option on the imported mesh right? I've got that on and I can manipulate the mesh, it's just that the color information is emptied out (only in builds)

I've added another question explaining it in better detail here: https://answers.unity.com/questions/1709168/vertex-color-emptied-after-instanciating-mesh-at-r.html

How to get vertex color before assigning color via Mesh.colors?

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