基于Shader开发的Unity碎屏特效

将脚本挂在摄像机，将图片经Shader处理后生成Material并渲染到屏幕

using UnityEngine;
using System.Collections;
using System;

//[ExecuteInEditMode]
//[AddComponentMenu （“PengLu/ImageEffect/BrokenScreen“）]
public class ImageEffect_BrokenScreen : MonoBehaviour {
	#region Variables
	public Shader BrokenScreenShader = null;
	private Material BrokenScreenMaterial = null;

	public Texture2D BumpMap;
    private RenderTextureFormat rtFormat = RenderTextureFormat.Default;

	[Range（0.0f 1.0f）]
	public float satCount = 0.17f;



	#endregion
	

void OnEnable （） {
		FindShaders （）;
		CheckSupport （）;
		CreateMaterials （）;
	}

	void FindShaders （） {
		if （!BrokenScreenShader） {
			BrokenScreenShader = Shader.Find（“PengLu/ImageEffect/Unlit/BrokenScreen“）;
		}
	}

	void CreateMaterials（） {
		if（!BrokenScreenMaterial）{
			BrokenScreenMaterial = new Material（BrokenScreenShader）;
			BrokenScreenMaterial.hideFlags = HideFlags.HideAndDontSave;	
		}
	}

	bool Supported（）{
		return （SystemInfo.supportsImageEffects && BrokenScreenShader.isSupported）;
	}


	bool CheckSupport（） {
		if（!Supported（）） {
			enabled = false;
			return false;
		}
		return true;
	}



	void OnRenderImage （RenderTexture sourceTexture RenderTexture destTexture）
	{	
		#if UNITY_EDITOR
			FindShaders （）;
			CheckSupport （）;
			CreateMaterials （）;	
		#endif

		float scaleX  scaleY ;

		if（sourceTexture.width > sourceTexture.height）
		{	
			scaleX = 1.0f;
			scaleY = （float） sourceTexture.height / （float） sourceTexture.width;			
		}		
		else
		{
			scaleX = （float） sourceTexture.width / （float） sourceTexture.height;
			scaleY = 1.0f;	
		}
		

		print（“scaleX:-------“ + scaleX + “ 	“ + “scaleY:-------“ + scaleY）;

		if（BumpMap != null）{
			
	        BrokenScreenMaterial.SetFloat （“_satCount“ satCount）;
	        BrokenScreenMaterial.SetFloat （“_scaleX“ scaleX）;
	        BrokenScreenMaterial.SetFloat （“_scaleY“ scaleY）;
	 		BrokenScreenMaterial.SetTexture （“_BumpTex“ BumpMap）;
	   		Graphics.Blit （sourceTexture destTexture BrokenScreenMaterial0）;

		}
		else {

			Graphics.Blit （sourceTexture destTexture）;

		}



		
		
	}
	
	 public void OnDisable （） {
        if （BrokenScreenMaterial）
            DestroyImmediate （BrokenScreenMaterial）;
             BrokenScreenMaterial = null;
    }
}

 属性            大小     日期    时间   名称
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     文件       2219  2018-03-06 16:38  suiping\ImageEffect_BrokenScreen.cs

    ..A..H.       262  2018-03-06 16:38  suiping\ImageEffect_BrokenScreen.cs.meta

     文件       1267  2018-03-06 16:38  suiping\ImageEffect_BrokenScreen.shader

    ..A..H.       195  2018-03-06 16:38  suiping\ImageEffect_BrokenScreen.shader.meta

     文件      47074  2018-03-06 16:38  suiping\sui.png

    ..A..H.      2070  2018-03-06 16:38  suiping\sui.png.meta

     目录          0  2018-03-17 17:20  suiping

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