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Spawned grass terrain detail "flipping" when camera moves away / towards it

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This is a weird one that I hope you might be able to help with! I've spawned a terrain using the out-of-the-box "Alpine Meadow" biome, using all of the out of the box Gaia assets. I have, however:


  • Disabled Flora
  • Enabled GPU Instancer to manage terrain details


What I've noticed is that when my character / camera approaches terrain details (i.e. grass and flowers spawned as terrain details), they suddenly "flip" as if displaying a mirror image. I've captured in this short video:


Hopefully you can see the white and blue flowers in front of the player - as I move away, and move towards, they seem to flip vertically, as if mirrored.


Any ideas what would cause this? Something to do with LODs, perhaps?


Many thanks for your thoughts!

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Update: it's nothing to do with Gaia or Flora. This is caused by GPU Instancer and it's "cross-quad" generation. Apologies, please disregard, nothing to do here!

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