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Number of Bones and Performance


i have one more Performance Question.

Im using a make human Skeleton which has about 170 bones, the question is:

Are many bones slowing down the Game mutch or is it ok to use so many Bones?

thanks in Advance


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asked Jul 15 '14 at 05:22 PM in Using UE4

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Hi siebencorgie,

Please take a look at the post below. They talk about the bone count as well as bone weights per vertex. https://answers.unrealengine.com/questions/8117/bone-limitations.html

I hope it helps.

Thanks, TJ

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answered Jul 15 '14 at 09:21 PM

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avatar image siebencorgie Jul 16 '14 at 08:42 AM


Ok so I can use many Bones in UE 4 but it costs just Power if i use more than 4 Bones per Vertex ?

avatar image TJ V ♦♦ STAFF Jul 16 '14 at 01:15 PM

Yes, the default max amount of bones is 255 but that can be changed if needed and anything over 4 bone weights per vertex will cost more performance wise.

I would suggest sticking to 4 or fewer unless the extra bone weights are needed (for realism or the like). If you are developing for mobile you definitely want to keep the bone weight limit down.

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