BuildAssetBundleOptions.ChunkBasedCompression

描述

在创建 AssetBundle 时使用基于块的 LZ4 压缩。

当使用基于块的压缩时，AssetBundle 的内容将被分解成单独的段，这些段将使用CompressionType.Lz4HC 算法独立压缩。生成的档案通常比默认使用的完整文件压缩更大，但使用这种格式构建的 AssetBundle 可以增量加载，例如，无需将完整内容解压缩到内存中。这是 AssetBundle 缓存中存储的 AssetBundle 使用的默认格式。

其他资源：AssetBundles 压缩，BuildCompression，CompressionType，ArchiveHandle.Compression，Caching，BuildAssetBundleOptions.UncompressedAssetBundle，BuildOptions.CompressWithLz4。

//Create a folder (right click in the Assets folder and go to Create>Folder), and name it “Editor” if it doesn’t already exist
//Place this script in the Editor folder

//This script creates a new Menu named “Build Asset” and new options within the menu named “Normal” and “Chunk Based Compression”. Click these menu items to build an AssetBundle.

using UnityEngine;
using UnityEditor;

public class Example
{
    //Creates a new menu (Build Asset Bundles) and item (Normal) in the Editor
    [MenuItem("Build Asset Bundles/Normal")]
    static void BuildABsNone()
    {
        //Build AssetBundles with no special options
        //They will be written in the custom folder ("MyAssetBuilds") which needs to exist prior to this call.
        BuildPipeline.BuildAssetBundles("Assets/MyAssetBuilds", BuildAssetBundleOptions.None, BuildTarget.StandaloneOSX);
    }

    //Creates a new item (Chunk Based Compression) in the new Build Asset Bundles menu
    [MenuItem("Build Asset Bundles/Chunk Based Compression")]
    static void BuildABsChunk()
    {
        //Build the AssetBundles in this mode
        BuildPipeline.BuildAssetBundles("Assets/MyAssetBuilds", BuildAssetBundleOptions.ChunkBasedCompression, BuildTarget.StandaloneOSX);
    }
}