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using UnityEngine;
//behaviour which should lie on the same gameobject as the main camera
public class Postprocessing : MonoBehaviour {
//material that's applied when doing postprocessing
private Material postprocessMaterial;
//method which is automatically called by unity after the camera is done rendering
void OnRenderImage(RenderTexture source, RenderTexture destination){
//draws the pixels from the source texture to the destination texture
Graphics.Blit(source, destination, postprocessMaterial);