Crash on ES3_1 with 250 bones

Development Character & Animation
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1

Hi.

According to the answer in this post on ES3_1 platform i may use up to 256 bones. When I’m trying Unreal crashes here.
Debugging shows that NumBones == 250, sizeof(FSkinMatrix3x4) == 48 and sizeof(GBoneUniformStruct) == 3600,
so there is a check that NumBones valiable should be <= than 75. This code is in else branch of if (InFeatureLevel > ERHIFeatureLevel::ES3_1) statement. I’ve changed the size of GBoneUniformStruct, and everything works fine on iPhone X, but I get wired result on iPad 2 Pro.

So the question is really ES3_1 platform supports 250 bones or not, or there is a problem with my rig?

2

This is just an irrelevant comment out of curiosity so feel free to ignore, but what are you doing that requires that many bones?

3

In my game I have a scene, with complex creature closeup. I would like to have realistic animation.