Wilhelm Landt


About Me




Houdini Skills


Not Specified

Recent Forum Posts

modular rigging with APEX May 7, 2024, 5:13 a.m.


want to ask if there is already something like mgear for maya (modular auto rigging) in houdini with the new APEX framework?

coming from maya rigging background, APEX looks (at first look) complicated concerning setting up a complex character rig (body + facial) having the "traditional" rigging concepts in mind...

adding two materials together? April 26, 2024, 10:20 a.m.


probably this was asked before, but i want to "add" (not mix) two materials together to achive a specific look.
adding a constant (unlit) shader, that has a texture applied, and a diffuse shader, that is white and gets the lighting.

how can i achieve this in materialX?

i.e. in redshift there is the materialBlender that has an additive option...

(and does the mtlx-ambient-occlusion not working in karma XPU?)

Vellum Cloth - Solver Speed Jan. 24, 2024, 3:14 p.m.


i have a vellum cloth setup, nothing special a simple dress (made with marvelous and remeshed for houdini), about 10K prims, so fairly low-poly.
vellum solver settings are mostly default, time step 4, 250 constraint iter...
when i simulate, it takes about 1.2 sec per frame, which leads on a 200frames simu in about 4-5min simulation time and the simu i consider not final, since it flickers when it comes to rest, so settings should be raised up...

nevertheless, when i simulate in marvelous, the dress then contains about 50K prims and it simulates (in cpu mode) in about 30secs, no flicker and it looks awesome...simulation settings fairly high (for animation)...

i am wondering why vellum solver is sooo slow (opencl is enabled in the solver)...and how can be it improved? somethin in the solver settings that has to be enabled to make it faster?
i would like to simulate in houdini, since it has more flexibility on settings things up or art direct the cloth...but the simulation speed is sooo slow, comparing to marvelous designer...