LOD Issue with RigLogic Mutable DNA

Development Character & Animation
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1

We are having a problem with the RigLogic Mutable DNA seemingly not applying across different LODs of a character’s head. While the propper skeletal morph from the DNA is occuring on LOD 0, it breaks with LOD 1 - LOD 3 which results in obvious LOD switching.

In this demo setup we have a Base Male head of Caucasian ethnicity being added to a Mesh Component and into a Base Object which has the RigLogic DNA of an Male head with African ethnicity. Both heads contain 4 LODs. Within the Mesh Component the Auto LOD Strategy is being set to Automatic from Mesh .Neither of these heads have Morph Targets.

We are not able to supply the meshes for repo, but a picture of graph is included.

We are running on 5.6 with the hope to switch to 5.7 soon, but for the time being this issue is causing some pretty obvious visual bugs. Any insight/help would be much appreciated. Thank you!

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2

Hey there,

The DNA plugin is experimental and will most likely change. One issue with the DNA file is that the skeletal mesh associated with it needs to be passed through the entire system. So, if you have a Caucasian male head with a DNA file from a different head, you will get incorrect results. You also need to be mindful when combining meshes, as well, because the basis for the DNA file would be wrong, and you could have undefined behaviour.

We recommend simplifying the approach by treating your heads as separate components if you’re using DNA, following the metahuman setup.

Dustin

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