107 lines
3.7 KiB
C#
107 lines
3.7 KiB
C#
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using System.Collections.Generic;
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using Performance.Data;
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using UnityEditor;
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using UnityEngine;
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namespace Performance
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{
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public class AutoObjCombine
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{
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private GameObject _rootObj;
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private Dictionary<Shader, ShaderGroupCombiner> _shaderCombinerDic = new Dictionary<Shader, ShaderGroupCombiner>();
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private string _savePath;
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private string _objName;
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public AutoObjCombine(GameObject rootObj)
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{
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_rootObj = rootObj;
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_objName = _rootObj.name;
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}
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public void DoCombine(string savePath)
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{
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_savePath = savePath;
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_ProtectPath();
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_CollectAllRenderers();
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_CombineToNewObj();
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}
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private void _ProtectPath()
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{
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if (!_savePath.EndsWith("/"))
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{
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_savePath += "/";
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}
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_savePath += _rootObj.name + "_Combined";
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AssetDatabase.DeleteAsset(_savePath);
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}
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private void _CombineToNewObj()
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{
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var newObj = Object.Instantiate(_rootObj);
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// 删除所有meshrenderderers和meshfilters
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var allMeshRenderers = newObj.GetComponentsInChildren<MeshRenderer>();
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var allMeshFilters = newObj.GetComponentsInChildren<MeshFilter>();
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for (int i = 0; i < allMeshRenderers.Length; i++)
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{
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Object.DestroyImmediate(allMeshRenderers[i]);
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}
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for (int i = 0; i < allMeshFilters.Length; i++)
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{
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Object.DestroyImmediate(allMeshFilters[i]);
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}
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foreach (var kvp in _shaderCombinerDic)
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{
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var combineObj = kvp.Value.CombineToSingleObject(_savePath, new List<Material>());
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if (combineObj == null)
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{
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DebugUtil.LogError("合并对象失败, 可能是没有找到 MeshFilter 或 MeshRenderer");
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continue;
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}
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combineObj.transform.SetParent(newObj.transform);
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}
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// 确保_savePath存在, 是从Assets目录开始的
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if (!AssetDatabase.IsValidFolder(_savePath))
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{
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var realPath = Application.dataPath + "/" + _savePath.Replace("Assets/", "");
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System.IO.Directory.CreateDirectory(realPath);
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}
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// 把newObj保存到指定路径
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var prefabPath = _savePath + "/" + _objName + ".prefab";
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PrefabUtility.SaveAsPrefabAsset(newObj, prefabPath);
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// 清理新创建的 GameObject
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Object.DestroyImmediate(newObj);
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AssetDatabase.Refresh();
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}
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private void _CollectAllRenderers()
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{
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var allMeshRenderers = _rootObj.GetComponentsInChildren<MeshRenderer>();
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for (int i = 0; i < allMeshRenderers.Length; i++)
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{
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var meshRenderer = allMeshRenderers[i];
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if (meshRenderer == null || meshRenderer.sharedMaterial == null)
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{
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continue;
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}
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var shader = meshRenderer.sharedMaterial.shader;
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if (!_shaderCombinerDic.TryGetValue(shader, out var combiner))
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{
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combiner = new ShaderGroupCombiner(shader);
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_shaderCombinerDic[shader] = combiner;
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}
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combiner.AddRenderer(meshRenderer);
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}
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DebugUtil.Log($"共收集到 {allMeshRenderers.Length} 个 MeshRenderer, 分别属于 {_shaderCombinerDic.Count} 个 Shader");
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}
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}
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}
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