Soft Mods - performance hit

[scroll-lock]

I have experienced the same performance hit when dealing with softmods. It's ok if they are less than 20 but for one project i needed a lot more, and it didn't worked.

[CharleyBoy]

I tried to use them too, but it is very slow. That's why I used paint weighted clusters to achieve same result. I think the best is to use bones for this kind of setup.

I have a post where I explain my problem by using clusters setup and parenting

post: http://forums.cgsociety.org/showthread.php?f=54&t=779034

If someone have a solution.

And if somebody know if we can use Soft Mods without affecting performance, would be great to know how.

scroll-lock: You're lucky to use 20 soft mods before it slow down, after my second soft mod, it was too slow.

[mlefevre]

scroll-lock: You're lucky to use 20 soft mods before it slow down, after my second soft mod, it was too slow.

Yea, after 5 or so it kicks in for me. The last one created thereafter is the fastest to manipulate, and each one previously created is progressively slower to manipulate.

[Dragon]

Yeah, they're very slow. I only use them for modeling. If it's the radial falloff you like about them you can write a script that uses the percent command for automating weights for clusters. I've done this in the past to give default weights on a procedurally built facial rig... works like a charm. It's been a while since I looked at the command, but I believe it will give you a radius around a point along with a falloff type (Gaussian, linear... etc.). It even will weight an object based off a curve if you're looking for something a little more customized.

[mlefevre]

Exactly what I'm looking for, thanks alot!

[exhibitx]

The way i go about it is that using wrap deformer and blendshape combine with the softmod tool. The way softmod work is that if you have 2+ softmod on a single geometry, the third last one will be fastest the the first one you created will slow down.


Example. I duplicate my head and use the dup. to deform the original using wrap deformer. Then i Duplicate the duplilcate to created blendshap. Turn the blendshape node to one and add the softmod on the blendshapes. I only add two softmod per blendshape. That way you don;t have to paint weight on clusters. That's my workflow, i know its not the best but it worked for me.

As for controlling the softmod on the original head. I use the rivet script to lock my controller onto the geometry where i want the softmod to deform. Delete the aim constraint , zero out the rivet and orient constraint the head joint to the rivet. Then i parent a controller to the rivet and direct connect, translate, rotate and scale of the contrller to the softmod tool. Make sure the softmod relativity is checked. Now i have a controlling following the face with fast softmod deformation and avoid cycle check.

Sorry about my half ass explaination, i'm not good at typing explaining things.

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