Vray_Material ID

 When i have objects with multi-materials on it , i want to separate them in different render pass.

當我有很多物件有復合的材質球，我想將它們分開在不同的渲染通道。

1. Pick one material of the objects   從物件中選一個材質

2.Going to VRayMtlSG tab. Select Attribute -> Vray -> Material ID

在那個材質球的SG設定Material ID

3.Pick one Color to be a Material ID

選定一個顏色

4.Go to Render setting.   Select Render Elements -> Material ID in Available render elements
到Render setting, 找到Render Elements ,在Available render elements 找到 Material ID

5.Prview in VFB .Select -> materialID
用VFB預覽，選擇material ID

enjoy it !