Unity项目中查找所有使用某一张图片的材质球，再查找所有使用材质球的预设

废话少说，直接上代码。

using UnityEditor;
using UnityEngine;public class FindDependencies : MonoBehaviour
{static bool m_bIsSaveFile = false;static TextWriteHelper m_szMaterialList = new TextWriteHelper();static TextWriteHelper m_szPrefabList = new TextWriteHelper();[MenuItem("Assets/FindImageDependencies")]static void FindDepend(){m_szMaterialList.ClearData();string imagePath = GetObjPath(); // "Assets/Path/To/Your/Image.png";string[] guids = AssetDatabase.FindAssets("t:Material");foreach (string guid in guids){string assetPath = AssetDatabase.GUIDToAssetPath(guid);Material material = AssetDatabase.LoadAssetAtPath<Material>(assetPath);if (material != null && HasTexture(material, imagePath)){Debug.Log(string.Format("Material referencing the image: {0}， and path = {1}", material.name, assetPath));//m_szMaterialList.AddContent(string.Format("Material referencing the image: {0}， and path = {1}", material.name, assetPath));FindPrefab(assetPath);}}if (m_bIsSaveFile){m_szMaterialList.SaveFile("MaterialReferenceList");m_szPrefabList.SaveFile("PrefabReferenceList");}}static string GetObjPath(){string path = AssetDatabase.GetAssetPath(Selection.activeInstanceID);return path;}static bool HasTexture(Material material, string texturePath){SerializedObject serializedMaterial = new SerializedObject(material);SerializedProperty texturesProperty = serializedMaterial.FindProperty("m_SavedProperties.m_TexEnvs");for (int i = 0; i < texturesProperty.arraySize; i++){SerializedProperty textureProperty = texturesProperty.GetArrayElementAtIndex(i);SerializedProperty textureValueProperty = textureProperty.FindPropertyRelative("second.m_Texture");if (textureValueProperty != null){Texture texture = textureValueProperty.objectReferenceValue as Texture;if (texture != null && AssetDatabase.GetAssetPath(texture) == texturePath){return true;}}}return false;}static void FindPrefab(string materialPath){//string materialPath = "Assets/Path/To/Your/Material.mat";string[] guids = AssetDatabase.FindAssets("t:Prefab");foreach (string guid in guids){string assetPath = AssetDatabase.GUIDToAssetPath(guid);GameObject prefab = AssetDatabase.LoadAssetAtPath<GameObject>(assetPath);if (prefab != null && HasMaterialReference(prefab, materialPath)){Debug.Log(string.Format("Prefab referencing the material: {0}，and prefab path ={1} ", prefab.name, assetPath));//m_szPrefabList.AddContent(string.Format("Prefab referencing the material: {0}，and prefab path ={1} ", prefab.name, assetPath));}}}static bool HasMaterialReference(GameObject gameObject, string materialPath){Renderer[] renderers = gameObject.GetComponentsInChildren<Renderer>(true);foreach (Renderer renderer in renderers){foreach (Material material in renderer.sharedMaterials){if (material != null && AssetDatabase.GetAssetPath(material) == materialPath){return true;}}}return false;}
}

上述代码中，我们首先使用AssetDatabase.FindAssets方法通过过滤类型（"t:Material"）获取所有材质球的GUID。然后遍历每个GUID，加载对应的材质球，判断该材质球是否引用了指定的图片。我们定义了一个辅助方法HasTexture来检查材质球中的纹理是否引用了目标图片，通过检查SerializedProperty来判断纹理是否匹配。

上述代码中，我们首先使用AssetDatabase.FindAssets方法通过过滤类型（"t:Prefab"）获取所有预设的GUID。然后遍历每个GUID，加载对应的预设，并判断该预设是否引用了指定的材质球。我们定义了一个辅助方法HasMaterialReference来检查预设及其子物体的渲染组件是否使用了目标材质球，通过遍历渲染组件的sharedMaterials数组来进行匹配。

综上所诉，我们也可以通过相似的方式去查找其他类型的资源引用。好了大功告成。。。