Material Transparency is not showing in the build

Question

I have came across a weird situation. I have a gameobject that has a standard shader material. The material rendering mode is set to Transparent. This is working fine in the Unity editor, but its transparency is not showing in the build mode.

Remember I am creating an asset bundle of the game objects. Then download it in the player. Yes, I know that the shader variant should be included in the build. So I have this standard shader in the build. On more thing I want to share is that I try to debug the player. Then, I found that the Keywords include only DIRECTIONAL LIGHTPROBE_SH while the same materail in the editor shows keyword DIRECTIONAL LIGHTPROBE_SH _ALPHABLEND_ON_EMISSION.

Remeber we are createing asset bundle in a seperate workspace while rendering the Asset bundle in a separate workspace. Here are the steps

1. Imported the fbx in asset bundle creator workspace and export asset bundle from it.
2. We have a seperate workspace that import the asset bundle on runtime.

Update: I fix this issue by when I instantiated the asset bundle I just enable the _ALPHABLEND_ON and _EMISSION keyworkds on the material. (check my answer) But i don't want this fix because it will add more time in overall asset bundle and downloading and instantaite process.

Update: I found that i am creating asset bundle in a seperate workspace and loading it in a different workspace. If i am making the bundle in the scene workspace then, it work fine. But why? How to resolve this?

Answer 1

I fixed this issue by enabling the _ALPHABLEND_ON and _EMISSION keywords on the material when I instantiated the asset bundle.

private void MaterialSettings(GameObject go)
    {
        Renderer[] renderers = go.GetComponentsInChildren<Renderer>();
        foreach (Renderer renderer in renderers)
        {
            foreach (Material material in renderer.sharedMaterials)
            {
                ApplyTransparency(material);
            }
        }
    }

    private static void ApplyTransparency(Material material)
    {
       
        material.EnableKeyword("_EMISSION");
        material.EnableKeyword("_ALPHABLEND_ON");
       
    }

However, I do not want to use this fix because it will increase the overall time required for downloading and instantiating the asset bundle.