Hda loader bugs

Hey there, i have found what i think it’s a bug.

When you add the hda loader from the extensions and you click on the Autoload checker, the next time you open OV Composer, your viewer will be totally black no matter what illumnination you load.

After some research I found that you have to delete the files in %userprofile%\AppData\Local\ov\data\Kit as in this forum topic:

The main window of Omniverse USD Composer is all black.

This is very annoying because I have to load the extension everytime a enter OV Composer.

Could you have a look to it? Thx

@josecastro3d which version of composer are you using, or is this kit 107 app template?

I am not sure I am understand fully. You are experiencing this issue just when trying to load this Houdini Engine? What about just normal kit? So leave this extension off, then start kit and is there a problem?

It sounds like this extension is doing exactly what it is supposed to do, which is to over our normal RTX Renderer settings, and autoload Houdini instead. And in that case, for some reason the screen appears black.

To be honest, I did not know we even had this renderer. What exactly are you trying to use it for? You cannot use RTX?

Hi @Simplychenable. I am using USD Composer version 2023.2.5

Thank you

I am not sure I am understand fully. You are experiencing this issue just when trying to load this Houdini Engine? What about just normal kit? So leave this extension off, then start kit and is there a problem?

----- If a leave the autoload checked, every time I open OV Composer the main view is black, no matter if I am using hda’s or not. ---------

It sounds like this extension is doing exactly what it is supposed to do, which is to over our normal RTX Renderer settings, and autoload Houdini instead. And in that case, for some reason the screen appears black.

----- I am not sure if I understand your point, I just want to open an hda in the composer like in this video: https://www.youtube.com/watch?v=yZ6cXocNSoA --------

Than you Richard3d

This is not good. You need to upgrade and get on the latest. Launcher is depreciated.

To download and build the latest Composer and other templates go to:

Or better still just follow these instructions: (Windows)

1. Download "git" from https://git-scm.com/downloads
2. Download "git Large File Storage from https://git-lfs.com/
3. Start a windows command console by using running "cmd" from the Windows Start menu
4. Navigate to where you want to install the kit app template folder
5. Copy and run "git clone https://github.com/NVIDIA-Omniverse/kit-app-template.git"
6. run "cd kit-app-template"
7. run "repo.bat template new"
8. run "repo.bat build"
9. run "repo.bat launch"

Hi Richard3d, thank you for the follow up.

I have installed Omniverse Composer via git, version 106.5, but unfortunately when I search for the hda loader in extensions it doesn’t appear, as you can see in the uploaded image.

Did I miss a step ?

Thank you in advance.

Well unfortunately this is why I have not heard of it. It may be super old and has been discontinued. We don’t really have much need of it. You can export your project as usd now.

Yes, but I would loose the poder of interactively tweak parameters and bake what I what I want.
It would be the same approach of having a .sbsar seeing in the scene and bake what fits you.

Well, if you keep both applications, open in a split screen, it only takes the time to re-save the USD. Then composer will automatically self update, so it’s not a huge deal.

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