Hi everyone!
I’m experiencing severe blurred edges and jittery artifacts on a character’s eyeball animation imported as an Alembic (.abc) cache from Maya to Unreal Engine. The edges are perfectly smooth in Maya, but they appear “jagged” and blurry in UnrealEngine.
In Maya(left) In UnrealEngine(Right)
Any advice on how to maintain sharp edges for ABC geometry would be greatly appreciated!
Hello there @leixious!
Considering your screenshots, that looks like a post-processing issue, either motion blur or anti-aliasing, combined with alembic cache and it’s motion vectors. In order to fix the problem, there are a few parameters to adjust, let’s cover them one by one:
First, during import of the .abc file, please make sure that Import Type is set to Geometry Cache, and that Flatten Tracks is disabled, since merging your parts will affect your edges, and the final image:
Next, open your alembic asset, search its parameters for all values tied to Motion Blur, and disable them:
If you have no need for post processing effects altogether, you could also disable them all with the following check in the same menu:
Finally, open your Project Settings, go to Rendering, and locate Default Settings. There, change your AA method to FXAA. If the issue persists, disable it entirely by setting it to None:
Besides these changes, we also need to ensure you are following the entire workflow for alembic cache. Please check the video guide and UE doc below, to check that all steps are covered properly:
Hope this helps, and good luck!
