Hi! My UE freezes a lot when importing alembic files from Liquigen. Even the 1 gb weight is a problem. I do everything according to the instructions. At the same time, everything is ok in other software. What is the problem? Help please.
If you’re using high quality meshing checkbox, turn that off and see if it fixes the issue.
Thanks, I’ll try. Tell me, would you like to give instructions on exporting to Mesh Flipbooks? It looks very impressive, but it has a very complicated setup.
Funny you mention this because I’m about to start writing a full article on VAT and Mesh flipbooks and break it down entirely. The gist with mesh flipbooks is that the frame # is encoded in the vertex color alpha channel in a range from 0 to 1.
You can see an example material here that I showed in this video: https://www.youtube.com/watch?v=3DwmiRRln68
Vertex color alpha is multiplied by the number of frames in the sequence then run through a floor node. That = our A component in our IF statement. The B component is the particle system alpha color or some other variable you want to use to control the current frame displayed. IF is plugged into the opacity so that we only display the current frame with an opacity value of 1. All other frames will be an opacity of 0.
In this case im using a masked material. Its probably wise to collapse the verts or clean them up in the shader and that could probably circumvent using masked materials and opacity, but im unfamiliar with how to do that but will be learning soon for the purpose of my article. There are also ways to push vertices for things like motion blur and slow motion between frames but that’s where things definitely get complicated.
Hope this helps point you in the right direction.
Thanks! I’ll try to figure it out) We are really looking forward to your article on exporting fluid simulation to Mesh flipbooks in Unreal Engine. At the moment, abc. has to be optimized in Houdini… It will be great if there is a bridge between Liquigen/Embergen and Unreal Engine!
This is also planned, see our roadmap: JangaFX - Roadmap
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