UnityShaderBook/Assets/Scripts/Extra/ImageEffectGeneral.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ImageEffectGeneral : PostEffectsBase{
    public Shader scannerShader;
    private Material scannerMaterial;
    public Material material
    {
        get
        {
            // 检查是否生成对应材质
            scannerMaterial = CheckShaderAndCreateMaterial(scannerShader, scannerMaterial);
            return scannerMaterial;
        }
    }
    //定义相关数据调整
    public string dataTags = "";
    public float dataScale = 1.0f;
    public string dataColorTags = "";
    public Color dataColor = Color.white;
    public new void Start()
    {
        //如果需要提前规定Camera获取深度纹理或者法线纹理，需要提前声明
        //GetComponent<Camera>().depthTextureMode = DepthTextureMode.DepthNormals;
    }

    void OnRenderImage(RenderTexture src, RenderTexture dest)
    {
        //GetComponent<Camera>().depthTextureMode = DepthTextureMode.DepthNormals;
        if (material != null)
        {
            //需要传入的数据，需要在Shader中定义好对应变量名称，作为传入依据。
            material.SetFloat(dataTags, dataScale);
            material.SetColor(dataColorTags, dataColor);
            Graphics.Blit(src, dest, material);
        }
        else
        {
            Graphics.Blit(src, dest);
        }
    }
}