模型的default-shader材质清除 工具

Assets/Editor/InstantGame/ModelDelShaderTool.cs

@@ -0,0 +1,107 @@
+
+using System.IO;
+using UnityEditor;
+using UnityEngine;
+using System.Collections;
+
+public class ModelMatTool : AssetPostprocessor
+{
+    private static bool _needWaiting = false;
+
+    /// <summary>
+    /// 是否启用删除操作
+    /// OnPostprocessModel回调在模型导入的时候就会调到，
+    /// 通过这个标记位保证只在调用脚本函数的时候执行。
+    /// </summary>
+    private static bool _enableDelete = false;
+
+    /// <summary>
+    /// 批量删除模型上的材质
+    /// </summary>
+    public static IEnumerator DelModelMats(Object[] models)
+    {
+        foreach (Object obj in models)
+        {
+            while (_needWaiting) yield return null;
+            DelModelMat(obj as GameObject);
+        }
+    }
+
+    /// <summary>
+    /// 删除模型上绑定的材质
+    /// </summary>
+    /// <param name="model">模型对象</param>
+    public static void DelModelMat(GameObject model)
+    {
+        if (null == model) return;
+        string assetPath = AssetDatabase.GetAssetPath(model);
+        ModelImporter importer = AssetImporter.GetAtPath(assetPath) as ModelImporter;
+        if (null == importer) return;
+        _enableDelete = true;
+        _needWaiting = true;
+
+        importer.importMaterials = true;
+        importer.importMaterials = false;
+        AssetDatabase.ImportAsset(assetPath);
+    }
+
+    public static void DelModelMatByPath(string assetPath)
+    {
+        ModelImporter importer = AssetImporter.GetAtPath(assetPath) as ModelImporter;
+        if (null == importer) return;
+        _enableDelete = true;
+        _needWaiting = true;
+
+        importer.importMaterials = true;
+        importer.importMaterials = false;
+        
+        AssetDatabase.ImportAsset(assetPath);
+    }
+    private void OnPostprocessModel(GameObject model)
+    {
+        if (null == model) return;
+
+        if (!_enableDelete) return;
+        _enableDelete = false;
+
+        Renderer[] renders = model.GetComponentsInParent<Renderer>();
+        if (null == renders) return;
+        foreach (Renderer render in renders)
+        {
+            render.sharedMaterials = new Material[render.sharedMaterials.Length];
+        }
+        renders = model.GetComponentsInChildren<Renderer>();
+        if (null == renders) return;
+        foreach (Renderer render in renders)
+        {
+            render.sharedMaterials = new Material[render.sharedMaterials.Length];
+        }
+
+        _needWaiting = false;
+    }
+
+    [MenuItem("Tools/删除模型的默认材质")]
+    static void DelSelectedModelMat()
+    {
+        /*
+        Object[] objs = Selection.GetFiltered(typeof(Object), SelectionMode.DeepAssets);
+        if ( objs != null)
+        {
+            DelModelMat(objs[0] as GameObject);
+            return;
+        }
+        */
+
+        string[] m_folder = { "Assets" };
+        var mesh_assets = AssetDatabase.FindAssets("t:mesh", m_folder);
+        var i = 0;
+        foreach(var meshGuid in mesh_assets)
+        {
+            var assetPath_ = AssetDatabase.GUIDToAssetPath(meshGuid);
+            DelModelMatByPath(assetPath_);
+            EditorUtility.DisplayProgressBar("重新导出assets", string.Format("更改Mesh的材质 {0}/{1}", i, mesh_assets.Length), (i * 1.0f) / mesh_assets.Length);
+            i++;
+        }
+        EditorUtility.ClearProgressBar();
+    }
+}

Assets/Editor/InstantGame/ModelDelShaderTool.cs.meta

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