Evan Robinson

evanrudefx

About Me

freelance vfx
専門知識
VFX Artist
INDUSTRY
Film/TV

Connect

LOCATION
N/A, United States
ウェブサイト

Houdini Skills

Availability

I am available for Freelance Work

My Tutorials

obj-image Beginner
Sci-fi texture using Copernicus
obj-image Beginner
Cleaning Photoscans
obj-image Beginner
Tiling Textures with Random UV's
obj-image Beginner
Loopable Rainy Window

Recent Forum Posts

Houdini Groom optimization 2026年5月25日17:44

Hello,
Whether or not you use the hair procedural just depends on your workflow. You can still make the setup you have work with the hair procedural. You can use the hair procedural in deform mode. Deform mode lets you deform the existing hair/render curves using guides.
Even if you don't have guides, you can very easily make some. Here are two easy ways to get guides from the hair curves.
1. Take your main hair/render curves and extract a subset of the curves to be guides (by deleting most of them randomly).
2. The setup you have to generate the hair, duplicate that setup and just generate far fewer curves. Then use those as guides.

I was just working on a project where the guides were lost and I had to generate some based on the final hair/render curves.

Once you have guides that are following the animation (and possibly have sim if you want that too), you only need your render/hair curves to be generated once at a rest frame. So you can just cache 1 frame of the render/hair curves. Then use the hair procedural to deform the render curves using the guides at render time so the hair follows along.

hope that helps.

viewport issues 2026年5月25日11:45

Hello,
Is anyone else having non-stop viewport issues? I am at the point where I reset the viewport multiple times every few minutes.
1. Dopnets at obj level stop updating. Reset viewport alone doesn't fix it. I have reset viewport and delete a node in the dopnet then hit undo to bring that node back for a chance for it to work.
2. When you go into a SOP packaged solvers (vellum solver sop, pyro solver sop, etc) (and possibly just subnets in general) the simulation won't update. I have to reset viewport. I have reported that bug multiple times across multiple versions, but ever since the bug was introduced it's never been fixed 100%. Pretty sure I have had this issue since like h17 or 17.5
3. background image sequences for cameras get stuck on some frame. Have to reset viewport.
4. animated textures in solaris stop updating (in vulkan and karma) even with allow shader animation on
5. Handles tools/viewer states don't properly activate.
6. Other objects don't show when either "ghost other objects" or "show all objects" are on. Resetting viewport fixes this.
7. Viewport generally not displaying the correct data or blank, until reset.
8. Textures not properly updating, but then houdini crashes when you reload textures.
9. Random data from a simulation showing in the viewport when it shouldn't.
I will probably try to report some of these, it's just there are so many and I don't have definitive ways to reproduce some of them. Is anyone else having issues? Like I said, I am at the point where reset viewport is just part of the workflow, but I have to keep hitting. A lot of these issues have transcended houdini versions, different OS's, different drivers, etc.
Thanks

Copmponent Output and thumbnail issue 2026年5月21日14:13

Thanks, this saved me a lot of time. I was trying to figure out why it kept rendering thumbnails even though there was already one there. I just changed the name like you said and that fixed it.