assetbuddle hash 比对

1.测试 ：当在预设上的数据有修改时，生成的ab也会有修改，具体到某个ab的.manifest里会有相应的变化，AssetFileHash 会修改

如图所示：
ManifestFileVersion: 0
CRC: 2818930197
Hashes:
AssetFileHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5
Hash: 4adc13d3960e17d51bdefb39b11bfd38
TypeTreeHash:
serializedVersion: 2
Hash: a4f2cf72eff62e7f396e3da640b19bd5
Hash: a4f2cf72eff62e7f396e3da640b19bd5
IncrementalBuildHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5

HashAppended: 0
ClassTypes:
2.测试，如果换了一台电脑进行svn上资源保持一致，但是unity版本不一样，重新进行打ab？
AssetFileHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5
Hash: 4adc13d3960e17d51bdefb39b11bfd38
TypeTreeHash:
serializedVersion: 2
Hash: a4f2cf72eff62e7f396e3da640b19bd5
Hash: a4f2cf72eff62e7f396e3da640b19bd5
IncrementalBuildHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5

AssetFileHash:
serializedVersion: 2
Hash: a245287ce02579e4aa41ecd605069056
TypeTreeHash:
serializedVersion: 2
Hash: a4f2cf72eff62e7f396e3da640b19bd5
IncrementalBuildHash:
serializedVersion: 2
Hash: a245287ce02579e4aa41ecd605069056
可以看到AssetFileHash已经不一样了，但是TypeTreeHash是一样的，

3.测试：现在在同一台电脑上新开一个目录，从新拉取svn 使用相同的unity版本，那两次的ab会有啥区别呢？
Hashes:
AssetFileHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5
724f933615fca0cbb61c963c3176b9b5
TypeTreeHash:
serializedVersion: 2
Hash: a4f2cf72eff62e7f396e3da640b19bd5
IncrementalBuildHash:
serializedVersion: 2
Hash: 724f933615fca0cbb61c963c3176b9b5
HashAppended: 0
ClassTypes:

• Class: 1

惊奇的发现一样了