Hello,

I was reading the Vellum Constraints geometry node docs and have found a Shape Match constraint but can not find it in the vellum constraint type. does any one knows where to find it?

it was added in 18.5.472, so make sure you are running at least that build

https://www.sidefx.com/changelog/
Houdini 18.5.472 The Vellum Solver has a new Shape Match constraint type, which can be added to existing Vellum constraints like cloth to make objects more rigid, or be used on its own. The Vellum Constraints SOP can create these constraint types, with the typical Define Piece parameters controlling which points go into each object. NOTE: these constraints have the same NVIDIA driver requirements as Pressure constraints, as specified in the What's New Vellum section of the help.

tamte
it was added in 18.5.472, so make sure you are running at least that build

https://www.sidefx.com/changelog/
Houdini 18.5.472 The Vellum Solver has a new Shape Match constraint type, which can be added to existing Vellum constraints like cloth to make objects more rigid, or be used on its own. The Vellum Constraints SOP can create these constraint types, with the typical Define Piece parameters controlling which points go into each object. NOTE: these constraints have the same NVIDIA driver requirements as Pressure constraints, as specified in the What's New Vellum section of the help.

Thanks,still don't have it at work and here at home I'm with a learning edition, will wait to test it until SideFX update the learning edition.

you can download the daily builds and run it with apprentice licencing (aka the learning edition) fine.

https://www.sidefx.com/download/daily-builds/ [www.sidefx.com]

mestela
you can download the daily builds and run it with apprentice licencing (aka the learning edition) fine.

https://www.sidefx.com/download/daily-builds/ [www.sidefx.com]

Woow, thanks man didn't know about this.

I'm having a problem with Vellum Shape Match, because when I add this constraint, the simulation disappears... in the second frame the geometry disappears. I'm using Linux.

光农场
I'm having a problem with Vellum Shape Match, because when I add this constraint, the simulation disappears... in the second frame the geometry disappears. I'm using Linux.

me too , win10 1080 Updated driver

Read the fine print in the docs and make sure you are running the right Nvidia driver

Do you need any special driver for the shape match mode?

Voldemar13
Do you need any special driver for the shape match mode?

from the docs (I assume newer versions will also be fine):

https://www.sidefx.com/docs/houdini/news/19/vellum.html
Shape match constraints require the latest driver for NVIDIA Ampere series cards. This is version 456.38 on Windows [www.nvidia.com] and version 450.80.02 on Linux [www.nvidia.com].

If you don’t update your driver, you can alternatively set the following environment variable to disable this feature: HOUDINI_OCL_FEATURE_DISABLE=CL_DEVICE_DEVICE_ENQUEUE_SUPPORT. For more information, see environment variables. [www.sidefx.com]

Voldemar13
Do you need any special driver for the shape match mode?

In the company I'm working we have had some crashes due to the Nvidia diver, if you are experimenting crashes with shapematch constraint try another driver.

tamte, thank you!

Thank you for posting this

and especially thank you tamte for resolution.

I have the same problem, with houdini 19.0.498 or 19.0.531
NVidia driver GeForce 511.79 and also with Nvidia Stidio 511.65 I was working on mardini stuff and the geometry just disappears at the second frame.

CPU: i7 3770K, GTX 1080 ti, 32 GB ram
I think then is because is not an RTX card :[

UPDATED...
It seems to works disabling it with:

If you don’t update your driver, you can alternatively set the following environment variable to disable this feature: HOUDINI_OCL_FEATURE_DISABLE=CL_DEVICE_DEVICE_ENQUEUE_SUPPORT. For more information, see environment variables.

tamte
If you don’t update your driver, you can alternatively set the following environment variable to disable this feature: HOUDINI_OCL_FEATURE_DISABLE=CL_DEVICE_DEVICE_ENQUEUE_SUPPORT. For more information, see environment variables.

Worked a treat. Thank you.

tamte

Voldemar13
Do you need any special driver for the shape match mode?

from the docs (I assume newer versions will also be fine):

https://www.sidefx.com/docs/houdini/news/19/vellum.html
Shape match constraints require the latest driver for NVIDIA Ampere series cards. This is version 456.38 on Windows [www.nvidia.com] and version 450.80.02 on Linux [www.nvidia.com].

If you don’t update your driver, you can alternatively set the following environment variable to disable this feature: HOUDINI_OCL_FEATURE_DISABLE=CL_DEVICE_DEVICE_ENQUEUE_SUPPORT. For more information, see environment variables. [www.sidefx.com]

Thanks a Lot @tamte