半透明面片或墙壁的实现

using UnityEngine; 

using System.Collections;  

public class example : MonoBehaviour {  

void Update() {  

RaycastHit[] hits;  

hits = Physics.RaycastAll(transform.position, transform.forward, 100.0F);  

int i = 0;  

while (i < hits.Length) {  

RaycastHit hit = hits[i];  

 Renderer renderer = hit.collider.renderer;  

if (renderer) {  

renderer.material.shader = Shader.Find("Transparent/Diffuse");  

      renderer.material.color = new Color(renderer.material.color.r,renderer.material.color.g,renderer.material.color.b,0.3f);

}  

 i++;  

 }  

 } 

}

绘制被遮挡部分 ZTest Off， ZTest Greater 绘制未被遮挡部分 ZTest On， ZTest LEqual 效果