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紫色原因是因为编辑器内跑了其他平台的shader兼容性导致的，需要动态的去修改shader，主要用到Unity的api : Shader.Find(shaderName);

具体的工具代码如下：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class ShaderManager
{public static ShaderManager Instance;public static ShaderManager GetInstance(){if (Instance == null){Instance = new ShaderManager();}return Instance;}List<Renderer> results = new List<Renderer>();List<Image> imageResults = new List<Image>();/// <summary>/// 修改一个AssetBundle内的所有shader/// </summary>public void ResetAllMaterials(AssetBundle bundle){//对Material进行更改var materials = bundle.LoadAllAssets<Material>();foreach (Material m in materials){var shaderName = m.shader.name;if (shaderName == "Hidden/InternalErrorShader")continue;var newShader = Find(shaderName);if (newShader != null){m.shader = newShader;}else{Debug.LogWarning("unable to refresh shader: " + shaderName + " in material " + m.name);}}//对GameObject进行更改var gameObjects = bundle.LoadAllAssets<GameObject>();foreach (var go in gameObjects){results.Clear();//物件上的材质go.GetComponentsInChildren<Renderer>(true, results);if (results.Count > 0){for (int ii = 0; ii < results.Count; ii++){for (int k = 0; k < results[ii].sharedMaterials.Length; ++k){var m = results[ii].sharedMaterials[k];UseEditorShader(m);}//粒子if (results[ii] is ParticleSystemRenderer particleRender){UseEditorShader(particleRender.sharedMaterial);UseEditorShader(particleRender.trailMaterial);}}}//贴图上的材质imageResults.Clear();go.GetComponentsInChildren<Image>(true, imageResults);if (imageResults.Count > 0){for (int ii = 0; ii < imageResults.Count; ii++){UseEditorShader(imageResults[ii].material);}}}}/// <summary>/// 修改单个物件的Shader/// </summary>/// <param name="go"></param>public void ResetEditorShader(GameObject go){if (go == null){return;}results.Clear();go.GetComponentsInChildren<Renderer>(true, results);if (results.Count > 0){for (int ii = 0; ii < results.Count; ii++){for (int k = 0; k < results[ii].sharedMaterials.Length; ++k){var m = results[ii].sharedMaterials[k];UseEditorShader(m);}}}}void UseEditorShader(ref Shader shader){if (shader == null)return;var shaderName = shader.name;var newShader = Find(shaderName);if (newShader != null)shader = newShader;}void UseEditorShader(Material material){if (material == null || material.shader == null)return;var shaderName = material.shader.name;var newShader = Find(shaderName);if (newShader != null)material.shader = newShader;}Shader Find(string shaderName){Shader outShader = Shader.Find(shaderName);if (outShader == null){outShader = Shader.Find("Standard");}return outShader;}
}

Shader的添加形式大概有两种：

1. 跟随AssetBundle 打进包里面，可以直接使用
        

   ShaderManager.GetInstance().ResetAllMaterials(bundleInfo.bundle);

2. 自建材质

               material = new Material(shader);
   #if EDITOR_RUN_OTHER_PLATmaterial.shader = Shader.Find(material.shader.name);
   #endif