Unity Ray Tracing 0

UnityRayTrace0.cs

using UnityEngine;
using System.Collections;

public class RayTracer : MonoBehaviour {
	
	private Texture2D myCanvas;

	// Use this for initialization
	void Start () {
		myCanvas = new Texture2D(Screen.width, Screen.height);	// ゲーム実行時のスクリーンサイズと同じにしておく
		Rendering();
	}
	
	// Update is called once per frame
	void Update () {
	}
	
	void Rendering()
	{
		Color backgroundColor = new Color(0.0f, 0.0f, 0.0f, 1.0f);
		for (int h = 0; h < myCanvas.height; h++) {
			for (int w = 0; w < myCanvas.width; w++) {
				Color c = backgroundColor;
				myCanvas.SetPixel(w, h, c);
			}
		}
		
		myCanvas.Apply();
	}
	
	void OnGUI() {
    	GUI.DrawTexture(new Rect(0, 0, Screen.width, Screen.height), myCanvas);
	}
}