Hi

first of all, is it possible?

the husk documentation says:
--gpu ** Enable GPU (OpenGL/Vulkan/Metal) support for render delegates.

the --list-renderers ** Prints list of all Hydra render delegates available.
gives me the result
Render Delegates:
- BRAY_HdKarma (Karma CPU)
- BRAY_HdKarmaXPU (Karma XPU)
- HD_HoudiniRendererPlugin (Houdini GL) - unsupported
- HdHDebug (Houdini Hydra Debugger) - unsupported
- HdStormRendererPlugin (GL) - unsupported
Some delegates may require the --gpu option.
You may get more detail using the TF_DEBUG variable

and that does not contain any vulkan.

Tried to set the render delegate to vulkan, but got error Unable to load render plugin: vulkan
And a lot of variants like HdVulkan and so, maybe they just forgot to update the help

btw, my question is, what is the simplest command line to execute husk with vulkan render?

thx

Not sure if this helps, but at one time I contacted SideFX regarding Python API for selecting the Vulkan delegate in the 3D viewport, and they informed me that "Houdini GL" is the internal name for it despite being Vulkan, and that they changed the interface to say "Houdini VK" only because it was confusing people.

Maybe if you choose the Houdini GL it will actually use Vulkan? Just a guess.

You can't render HoudiniGL or HoudiniVK with husk. Instead, use the Flipbook ROP with hbatch or hython.

@alexmajewski: thx. I've tried all delegates from the list (including houdini gl) with no luck

@malexander: I was afraid of that, but very strange, then why they say in the husk doc: --gpu ** Enable GPU (OpenGL/Vulkan/Metal) support for render delegates.

Husk is an ultimate choice for me, because can be executed from cmd line, and have four states where I can do anything with python. And there is no GUI.

If not possible I will find some other way.
Thx

hython and hbatch are command line versions of Houdini. You can pass scripts as arguments

@alexmajewski: thank you, did not know.
Dive deeper into it

thanx again

I forgot that hrender is also an option:

It is working.

thank you again

I started with this video: https://youtu.be/HaxqalR-cUk?si=K4ooGPsfTmBSWRSE [youtu.be]

all those render delegates you see are mostly OpenGL/CPU stuff. Even --gpu won’t magically enable Vulkan if the plugin isn’t there. Honestly, simplest command is probably just husk --gpu HdStormRendererPlugin and call it OpenGL for now, Vulkan seems like a wishlist feature.