using UnityEngine;

public class Snow : MonoBehaviour
{
	public GameObject snowPlane;

	public Material blitmat;

	public Material white;

	public float updateSpeed = 100f;

	private Camera cam;

	private bool backgroundset;

	private void Start()
	{
		cam = GetComponent<Camera>();
		cam.depthTextureMode = DepthTextureMode.Depth;
		cam.orthographicSize *= snowPlane.transform.localScale.x;
	}

	private void OnRenderImage(RenderTexture source, RenderTexture destination)
	{
		blitmat.SetFloat("_Speed", updateSpeed);
		if (!backgroundset)
		{
			Graphics.Blit(source, destination, white);
			backgroundset = true;
		}
		else
		{
			Graphics.Blit(source, destination, blitmat);
		}
	}
}