Unity3D研究院之使用Android的硬件缩放技术优化执行效率

	void OnApplicationPause(bool paused)
	{
		Logger.Print("paused:", paused);
		if (!paused) {
	            Screen.SetResolution(960,640,true);
		} 
	}

	IEnumerator Start()
	{
                Screen.SetResolution(960,640,true);
		yield return new WaitForSeconds(0.1f);
		//在下面代码里面在处理设置完分辨率以后的逻辑
	}

	private int scaleWidth =0;
	private int scaleHeight =0;
	public void setDesignContentScale()
	{
#if UNITY_ANDROID
		if(scaleWidth ==0 && scaleHeight ==0)
		{
			int width = Screen.currentResolution.width;
			int height = Screen.currentResolution.height;
			int designWidth = 960;
			int designHeight = 640;
			float s1 = (float)designWidth / (float)designHeight;
			float s2 = (float)width / (float)height;
			if(s1 < s2) {
				designWidth = (int)Mathf.FloorToInt(designHeight * s2);
			} else if(s1 > s2) {
				designHeight = (int)Mathf.FloorToInt(designWidth / s2);
			}
			float contentScale = (float)designWidth/(float)width;
			if(contentScale < 1.0f) { 
				scaleWidth = designWidth;
				scaleHeight = designHeight;
			}
		}
		if(scaleWidth >0 && scaleHeight >0)
		{
			if(scaleWidth % 2 == 0) {
				scaleWidth += 1;
			} else {
				scaleWidth -= 1;					
			}
			Screen.SetResolution(scaleWidth,scaleHeight,true);
		}
#endif
	}

	void OnApplicationPause(bool paused)
	{
		if (paused) {
		} else {
			setDesignContentScale();
		}
	}

	private int width,height;
	// Setup activity layout
	@Override protected void onCreate (Bundle savedInstanceState)
	{
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		super.onCreate(savedInstanceState);

		getWindow().takeSurface(null);
		setTheme(android.R.style.Theme_NoTitleBar_Fullscreen);
		getWindow().setFormat(PixelFormat.RGB_565);

		mUnityPlayer = new UnityPlayer(this);
		if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true))
			getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN,
			                       WindowManager.LayoutParams.FLAG_FULLSCREEN);

		setContentView(mUnityPlayer);
		mUnityPlayer.requestFocus();
		
		//保存一下游戏屏幕的宽和高
		DisplayMetrics dm = getResources().getDisplayMetrics();
		width = dm.widthPixels;
		height = dm.heightPixels;
		
	}

	// This ensures the layout will be correct.
	@Override public void onConfigurationChanged(Configuration newConfig)
	{
		super.onConfigurationChanged(newConfig);
		//在这里强制设置一下屏幕的宽和高
		mUnityPlayer.getView().getLayoutParams().width = width;
		mUnityPlayer.getView().getLayoutParams().height = height;
		Log.v("unity", width+" " + height );
		
		mUnityPlayer.configurationChanged(newConfig);
		
	}