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Votes
0
Found in
2019.1.0a1
2019.1.10f1
2019.2.0a1
2019.3.0a1
Issue ID
1173531
Regression
No
Changes in Scene triggers Mesh data optimization when building AssetBundle using ScriptableBuildPipeline
Steps to reproduce:
1. Open User-supplied project ("ScriptableBuildPipelineIssue.zip")
2. Select AssetBundle - > Build, notice the mesh optimization job
3. In the Project window -> Sprites -> MyAtlas change the padding property
4. Repeat step 2
Expected: the mesh optimization does not reoccur
Actual: mesh optimization does not reoccur
Reproduced in: 2019.1.13f1, 2019.2.0f1, 2019.3.0a11
Not reproduced in: 2017.4.30f1*, 2018.4.5f1*
Note: *Can't build the Asset Bundle due to errors
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Resolution Note:
MyAtlas is referenced by SampleScene4, changing MyAtlas invalidates the cache for the bundle containing SampleScene4. Since the output of scenes are required as an input to Mesh data optimization, it was running again to see if any of the meshes need to be rebuilt due to optimizations changing. In this case the result is that no optimizations have changed, thus the only rebuilt bundle is SampleScene4. This can be verified by looking at the timestamps of the resulting bundles. This is working correctly as expected.