Asset Bundle LZ4/LZMA

[Romsstar]

First of all,

great update with a lot of neat features.

Now to my issue at hand:

The asset bundle compression works, but the LZMA Compression causes huge slowdowns when loading asset bundles, up to the point that I felt the game just froze on me .

Now I suspect this issue might be resolved using LZ4 as uncompressed yielded better results than LZMA but still had some issues due to the (I think) increased file size.

So yeah, requesting LZ4 Support for asset bundles pls :)

[0x900x90]

I wrote small command line utility for this. You can use it while there is no alternatives. Works only with UnityFS.

http://rgho.st/7MYX8QYth

unpack
ubpu name.unity3d
pack
ubpu name.unity3d.xml [lz4|lzma|none]

[DerPopo]

The next release will have LZ4 compression support.

I've modified the LZ4 compression algorithm to support streaming, reducing the memory usage from up to 4GB (uncompressed + compressed memory buffers) to only 25MB. I've tested it on a couple of large compressable and uncompressable files but there might still be bugs in certain corner cases, so I'll call it experimental for now.

There will be an additional compression dialog to select between LZMA/LZ4/none for all files in the bundle (Unity 5+ only). In case you want to be completely sure the compressed data is valid, you can compare the hashes of the bundle 'compressed' with none and the bundle compressed with LZ4 and then decompressed again. Since UABE appends the file table instead of placing it after the header for compression (there's a flag in the header for that), the hashes will usually differ from bundles directly exported with Unity.