Unity场景ab包加载压缩(LZ4，LZMA)格式的测试

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情况

最近场景越来越大，大概800M的场景加载时间可能长达40秒左右，所以需要测试看看发生了什么。

测试环境

测试环境Win10，21thI5-12600KF，32GRam ， Nvidia GF RTX2060 32G
Scene1大小：741M

加载代码

首先放上部分的加载场景的代码：

        public float sceneprog;public AsyncOperation sceneAsync;async public Task LoadScene(string path){sceneprog = 0f;await Task.Delay(10);StreamAssetVer sav = GameJsonMain.inst.Get(path);if (sav == null){Debug.LogWarning("不存在的场景:" + path);return ;}if (!sav.isab){Debug.LogWarning("场景isab必须对勾:" + path);return;}float loadtime = Time.realtimeSinceStartup;float computloadtime;float ratetime = 0.9f;//Application.backgroundLoadingPriority = ThreadPriority.Low;Debug.Log("LoadScene - begin ..."+ Application.backgroundLoadingPriority);
#if UNITY_EDITOR && TESTRESstring[] dirs = UnityEditor.AssetDatabase.GetAssetPathsFromAssetBundle(path);//Object[] listobj = new Object[dirs.Length];if(dirs.Length == 0)Debug.LogWarning("找不到这个资源:" + path);for (int i = 0; i < dirs.Length; i++){string assetPathAndName = dirs[i];LoadSceneParameters ls;ls = new LoadSceneParameters();ls.loadSceneMode = LoadSceneMode.Additive;sceneAsync = EditorSceneManager.LoadSceneAsyncInPlayMode(assetPathAndName,ls);  // .LoadSceneInPlayMode(assetPathAndName, ls);sceneAsync.allowSceneActivation = false;while (sceneAsync.progress < 0.9f){sceneprog = sceneAsync.progress;await Task.Delay(100);Debug.Log("load - " + sceneprog);}//sceneAsync.allowSceneActivation = true;//listobj[i] = null;}sceneprog = 1f;//Debug.Log("load1 - " + sceneprog);computloadtime = Time.realtimeSinceStartup - loadtime;Debug.Log("LoadScene unity- load file time : " + computloadtime);return ;
#endifTask<UnityWebRequest> task;if (sav.include){task = streamingAssetsLoader(sav);}else{task = AssetsLoader(sav);}await task;UnityWebRequest www = task.Result;if (www.result != UnityWebRequest.Result.Success){www.Dispose();return ;}computloadtime = Time.realtimeSinceStartup - loadtime;Debug.Log("LoadScene - load file time : " + computloadtime);//这个LoadFromFileAsync函数的路径不需要file://AssetBundleCreateRequest abRequest;
#if UNITY_EDITORabRequest = AssetBundle.LoadFromFileAsync(sav.savepath.Replace(filelink, ""));
#elseif(Application.platform == RuntimePlatform.Android){abRequest = AssetBundle.LoadFromFileAsync(sav.savepath);}else{abRequest = AssetBundle.LoadFromFileAsync(sav.savepath.Replace(filelink, ""));}
#endifabRequest.allowSceneActivation = false;while (!abRequest.isDone){sceneprog = abRequest.progress;await Task.Delay(100);//Debug.Log("ab:"+ sceneprog);}abRequest.allowSceneActivation = true;AssetBundle ab = abRequest.assetBundle;computloadtime = Time.realtimeSinceStartup - loadtime;Debug.Log("LoadScene - load AssetBundle time :" + computloadtime);//Debug.Log("ab1:ok," + sav.path +" - "+ sav.url);sceneAsync = SceneManager.LoadSceneAsync(sav.path, LoadSceneMode.Additive);sceneAsync.allowSceneActivation = false;while (sceneAsync.progress < 0.9f){sceneprog = ratetime + sceneAsync.progress * (1- ratetime);await Task.Delay(100);//Debug.Log("load:" + sceneprog);}sceneprog = 1f;computloadtime = Time.realtimeSinceStartup - loadtime;Debug.Log("LoadScene - load LoadSceneAsync time :" + computloadtime);await Task.Delay(300);//sceneAsync.allowSceneActivation = true;//SceneManager.LoadScene(ab.GetAllScenePaths()[0]);//Object[] objs = ab. ab.LoadAllAssets();www.Dispose();ab.Unload(false);return ;}