在其它三维软件中设置好的双面材质导入到unity3d中就失去了效果，不过我们可以通过自定义材质来在unity3d中实现双面材质的效果。步骤如下：
1、在资源库中新建一新shader；代码如下：
Shader "DoubleSided" {
Properties {
_Color ("Main Color", Color) = (1,1,1,1)
_MainTex ("Base (RGB)", 2D) = "white" {}
//_BumpMap ("Bump (RGB) Illumin (A)", 2D) = "bump" {}
}
SubShader {
//UsePass "Self-Illumin/VertexLit/BASE"
//UsePass "Bumped Diffuse/PPL"
// Ambient pass
Pass {
Name "BASE"
Tags {"LightMode" = "PixelOrNone"}
Color [_PPLAmbient]
SetTexture [_BumpMap] {
constantColor (.5,.5,.5)
combine constant lerp (texture) previous
}
SetTexture [_MainTex] {
constantColor [_Color]
Combine texture * previous DOUBLE, texture*constant
}
}
// Vertex lights
Pass {
Name "BASE"
Tags {"LightMode" = "Vertex"}
Material {
Diffuse [_Color]
Emission [_PPLAmbient]
Shininess [_Shininess]
Specular [_SpecColor]
}
SeparateSpecular On
Lighting On
Cull Off
SetTexture [_BumpMap] {
constantColor (.5,.5,.5)
combine constant lerp (texture) previous
}
SetTexture [_MainTex] {
Combine texture * previous DOUBLE, texture*primary
}
}
}
FallBack "Diffuse", 1
}
然后在模型材质中更改shader为上面新建的Nature/Vegitation Vertex Lit这个shader即可实现双面效果。