Hi,

I need to be able to fade in/out meshes within a container without changing the material.

I’m surprised this feature is missing in such a mature engine.
I believe his is simple enough, and I remember I had no problem achieving that with plain OpenGL.

BTW, can anybody recommend a workaround for that?

You don’t need to change the material, the material has its own alpha property.  A mesh is just a collection of verts.  It’s the material you actually see, so it’s the material that needs to fade in and out.

Yes, but in my game scene I have multiple objects (meshes) all sharing the same material (TextureMaterial with a specific texture). If I change the material’s alpha, all of them will be affected.

I need to fade one specific mesh without affecting the others.

Can it be done?

The only way to do that is to have a separate material.

My point exactly.

Practically, materials are often shared between many meshes/instances - that is why we need that feature.

It is trivial in other engines (like Unity3D) that manage the states based on the scene graph - mesh groups can have properties that are applied to the vertices, such as alpha and UV coordinates.

mesh groups can have properties that are applied to the vertices, such as alpha and UV coordinates.

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