UnityShaderBook/Assets/Scripts/Extra/ScreenEffect/ImageEffect_Scanner.cs

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

public class ImageEffect_Scanner : PostEffectsBase{
    public Shader scannerShader;
    private Material scannerMaterial;
	public Material material
	{
		get
		{
			scannerMaterial = CheckShaderAndCreateMaterial(scannerShader, scannerMaterial);
			return scannerMaterial;
		}
	}

	public float scannerScale = 1.0f;

	public float depthScale = 1.0f;

	public Texture2D mesh;
	public Vector2 st;
	public Color scannerColor = new Color(1,1,1,1);
	public float strength = 1.0f;
	public new void Start() {
		GetComponent<Camera>().depthTextureMode = DepthTextureMode.DepthNormals;
	}

	void OnRenderImage(RenderTexture src, RenderTexture dest)
	{
		//GetComponent<Camera>().depthTextureMode = DepthTextureMode.DepthNormals;
		if (material != null)
		{
			material.SetFloat("_ScannerScale", scannerScale);
			material.SetFloat("_DepthScale", depthScale);
			material.SetTexture("_ScannerTex", mesh);
			material.SetFloat("_TexX", st.x);
			material.SetFloat("_TexY", st.y);
			material.SetColor("_ScannerColor", scannerColor);
			material.SetFloat("_ScannerStrength", strength);
			Graphics.Blit(src, dest, material);
		}
		else
		{
			Graphics.Blit(src, dest);
		}
	}
}