using UnityEngine;

using UnityEngine.UI;

using System.Collections;

public class ResolutionModifier : MonoBehaviour

{

public Camera cam;

public RawImage alfx0;

private int targetWidth = Screen.width;

private int targetHeight = Screen.height;

private void Start() {

ChangeResolution(targetWidth, targetHeight, FilterMode.Bilinear);

}

void OnGUI()

{

//originx4

if (GUI.Button(new Rect(1000, 40, 100, 30), "orignx4")){

ChangeResolution(targetWidth*4, targetHeight*4, FilterMode.Bilinear);

}

//originx2

if (GUI.Button(new Rect(1000, 80, 100, 30), "orignx2")){

ChangeResolution(targetWidth*2, targetHeight*2, FilterMode.Bilinear);

}

//origin

if (GUI.Button(new Rect(1000, 120, 100, 30), "orign")){

ChangeResolution(targetWidth, targetHeight, FilterMode.Bilinear);

}

//0.5

if (GUI.Button(new Rect(1000, 160, 100, 30), "orign/2")){

ChangeResolution(targetWidth/2, targetHeight/2, FilterMode.Point);

}

//0.25

if (GUI.Button(new Rect(1000, 200, 100, 30), "orign/4")){

ChangeResolution(targetWidth/4, targetHeight/4, FilterMode.Point);

}

//0.125

if (GUI.Button(new Rect(1000, 240, 100, 30), "orign/8")){

ChangeResolution(targetWidth/8, targetHeight/8, FilterMode.Point);

}

}

void ChangeResolution(int width, int height, FilterMode mode){

if ( cam.targetTexture != null )

{

cam.targetTexture.Release( );

}

RenderTexture al = new RenderTexture(width, height, 24);

mode = FilterMode.Bilinear;

al.filterMode = mode;

cam.targetTexture = al;

alfx0.texture = al;

}

}