4 bones per vertex limit

PixL · Post by **PixL** » Thu Mar 30, 2006 9:42 pm

How do I set this limit in 3ds max so that it doesnt assign more then four bones for a vertex?

Lee04 · Post by **Lee04** » Thu Mar 30, 2006 10:34 pm

You set it in the skin or physiqe modifier when you apply is to the mesh.

3 bones limmit on older cards and 4 bones limmit on newer cards.

Yeh there is number of bones limmits as well so if you have many bones you need to splitt it. This is due to limmited number of CPU->GPU c registers (uniform variables) on different cards.

Dependng on your application software skinning can be faster. But otherwise harware skinning.

Mikachu · Post by **Mikachu** » Thu Mar 30, 2006 10:35 pm

In 3dsmax 8, in the skin modifier, there is a "bone affect limit" in advanced parameters. I don't know if it's in the other versions.

PixL · Post by **PixL** » Fri Mar 31, 2006 2:16 am

ok thanks.

This didn't solve my problem though. Thing is I thought the reason my animated meshes were messed up was becouse of the bone assignmens, but I have experiemented with different setups of the physique modifier and still couldnt fix it. The meshes are even messed up in oFusion viewport. The arms and legs of the model are stretched and look realy wierd. It looks as if some parts of the mesh are "atracted" to the wrong bones. I don't have any modifiers above physique and I didn't use any bone mirroring. All I did was create a biped system, scale bones and assign physique modifier.

Has anyone else had this problem? Could this be a problem with oFusion? Allso, does anyone have a biped animation scene that exports correctly just so I can see how it should be done?

Mikachu · Post by **Mikachu** » Fri Mar 31, 2006 8:35 am

This problem is very, very current. You can minimise it by having the arms of the character well separated from the body, but even with it, it's not sure it works all the time.
So the solution, at this point, is to edit individually each bone enveloppe in the skin or physique modifier (which takes me a looooot of time because I'm not too good at it).
See the 3dsmax animation tutorials for more information.

Lee04 · Post by **Lee04** » Fri Mar 31, 2006 9:35 am

Ask in the addons forum there is the ofusion department...

But you scaled bones in figure mode ofcourse?

How does the model look in a none ofusion view port?

Did you try another exporter than ofusion?

PixL · Post by **PixL** » Fri Mar 31, 2006 1:05 pm

Mikachu wrote:This problem is very, very current. You can minimise it by having the arms of the character well separated from the body, but even with it, it's not sure it works all the time.
So the solution, at this point, is to edit individually each bone enveloppe in the skin or physique modifier (which takes me a looooot of time because I'm not too good at it).
See the 3dsmax animation tutorials for more information.

Well its not that hard to make the model look correct in max, its just to select a number of verts and assign them to a bone. I find that alot easier then to use envelopes. Maybe that is the problem? Allso I'm using premade bip file from Q3A (http://asp.planetquake.com/dl/dl.asp?q2 ... -steed.zip) that contains all the animations. Actualy the model looked quite well when I animated some parts of it myself. Could it be the bip file that poses a problem? Can someone test these bips? You thould see the problem in oFusion viewport. I used major.bip to be exact...

Yes i scaled bones in figure mode, its imposible otherwise..

The model looks great in max itself

No I havent tested another exporter couse I couldn't make native ogre exporter work in max 8.

Mikachu · Post by **Mikachu** » Fri Mar 31, 2006 6:13 pm

I would answer by the traditionnal question in all oFusion threads: did you apply a reset xForm on the mesh?

PixL · Post by **PixL** » Sat Apr 01, 2006 12:13 pm

Yes I did and it works now