使用 ComputeShader 将图片转成灰阶图

C # :

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.UI;

 

public class Test : MonoBehaviour

{

    public Texture2D inputTexture;

    public RawImage outputImage;

    public ComputeShader shader;

 

    void Start ()

    {

        RenderTexture t = new RenderTexture (inputTexture.width, inputTexture.height, 24);  //computeshader只能用RT

        t.enableRandomWrite = true;

        t.Create ();

        outputImage.texture = t;

 

        int k = shader.FindKernel ("CSMain");

        shader.SetTexture (k, "inputTexture", inputTexture);

        shade