UPaperSprite::PostLoad() now sets BakedSourceTexture, BakedSourceUV, and BakedSourceDimension (if AtlasGroup is nullptr). There's nothing in reimport that sets them, so they are stale/latch to the values from load rather than the correct updated values computed during reimport.
They were originally only ever meant for in-editor-atlased textures, now that that's changed, we need to compute them whenever anything changes SourceUV/SourceDimension/SourceTexture if AtlasGroup is nullptr I guess.
1. Download and unzip TestSpriteImport_Horizontal.zip and TestSpriteImport_Vertical.zip
2. Rename the TestSpriteImport_Horizontal folder to TestSpriteImport
3. import the file inside named TexturePackerExport.paper2dsprites
4. Place the four sprites inside the Frames directory into a map and save everything.
5. *CLOSE THE EDITOR*
6. Reopen the editor
7. Stomp on the files in the TestSpriteImport directory with the files from TestSpriteImport_Vertical
8. Open the map you saved
9. Right-click on TexturePackerExport in the content browser and Reimport.
Expected: The sprites in the map stay the same (CorrectSpriteTextureCoords.png)
Actual: The sprites in the map change appearance (IncorrectSpriteTextureCoords.png).
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-96261 in the post.
3 |
Component | UE - Gameplay - Paper2D |
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Affects Versions | 4.24, 4.25, 4.26 |
Target Fix | 4.26 |
Created | Aug 1, 2020 |
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Resolved | Oct 13, 2020 |
Updated | Apr 28, 2021 |