yCatDev

Shader "Custom/UnlitTexture"
{
    Properties
    {
        [MainColor] _BaseColor("BaseColor", Color) = (1,1,1,1)
        [MainTexture] _BaseMap("BaseMap", 2D) = "white" {}
    }

    // Universal Render Pipeline subshader. If URP is installed this will be used.
    SubShader

yCatDev

using UnityEngine;
using System.Collections;

public class Greyscale : MonoBehaviour {
    public Material mat;

    void Start() {
        mat.SetFloat( "_Power", 0.0f );
    }