monci
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@MaiAo Any ideas of using 1024 or higher resolution for heightmap?

SurajShettigar
Hello!

I have been trying to wrap my head around the Rigidbody VAT3 Shadergraph for Unity. The Min and Max Bounds has some sort of magic values which makes the simulation work correctly. Changing it slightly breaks the whole simulation. I checked the shadergraph of URP which is quite different than the shader code for standard pipeline.

I followed this tutorial [youtu.be] to create a Rigidbody simulation. Only when I use the values provided in the example project for Bound Min and Max, it seems to work.

I am trying to recreate the shader and have not been able to understand the bound related calculations in the shader.

zachagreg
Hello, I recently attempted to use mapbox to grab some map data. However, I am unable to even get passed API key input. After inputting my key and hitting refresh on the node, Houdini begins to compute and then errors with this message.

Traceback (most recent call last):
File "labs::Sop/mapbox::2.1/refresh", line 1, in <module>
File "labs::Sop/mapbox::2.1, PythonModule", line 39, in update
File "labs::Sop/mapbox::2.1, PythonModule", line 167, in refresh
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.383/houdini/python3.7libs\hou.py", line 16462, in cook
return _hou.Node_cook(self, *args, **kwargs)
hou.OperationFailed: The attempted operation failed.
Error while cooking.

Currently I am on Houdini 19.0.383 py3

Unfortunately, I have no idea what is going on within the node to diagnose the issue any further. Any suggestions or others running into this?

papsphilip
I am also struggling to make the baked height work. in my case i have a complex rock i want to bake small details to the low version.
Its difficult to guess the height range and the trace distance.
Iterations are not quick because it takes a while to bake.
Is there a way to know these values in a more precise way?
some sort of visualizer would be helpful to see the correct height range.

a lot of the times the height map is noisy, is that because of my geo or the map resolution?

darkPrince
Hi!

I was wondering if the workflow has changed for Unreal Engine 5? Especially for the fluids/dynamic remeshing vat? I'm currently using Houdini 19.0.455 and UE 5.0.2. I did follow all the steps but still don't get a clean mesh.

Image Not Found

The same vat works perfectly on UE 4.27.2 though.

I'd greatly appreciate your help.

Cheers!

ankoro
Official Labs Vertex Animation Textures 3.0 FAQs and Linksでしばらく回答が無いようなので、
新たなスレットにさせてもらいました。

Official Labs Vertex Animation Textures 3.0 FAQs and Linksで一ヶ月半前に質問されていた、
Fluid VATのエラーについて19.0.622に含まれていた5.0のsideFX LABでEAが取れていたので試したところ、
まだエラーが継続されていたようでした。

いくつか検証したところエラーの問題はmeshのimportにあるようでした。
これはunreal engine5の問題なのでしょうか？
それともプラグイン側の問題なのでしょうか？？



Official Labs Vertex Animation Textures 3.0 FAQs and Links hasn't answered for a while, so I decided to make it a new threat.

Asked a month and a half ago in the Official Labs Vertex Animation Textures 3.0 FAQs and Links,
About Fluid VAT error I tried it because EA was taken with 5.0 sideFX LAB included in 19.0.622.
It seemed that the error was still going on.

After some verification, the error issue seemed to be in the mesh import.

Is this a problem with unreal engine 5?
Or is it a plugin issue? ??

WANGHAN
Hi, I'm trying to import a liquid simulation from houdini to Unreal 5 using VAT but my mesh is changing ever time and full of hole?Why?

rendereverything
Hello. I recently discovered alternative approach to VAT (vertex animation textures) for skeletal meshes. It is already included in Unreal Engine in form of 3DsMax Script (StaticMeshSkeletalAnimation.ms) and material function ms_StaticMeshSkeletalAnimation.

It is explained a bit here: https://vimeo.com/266582237 [vimeo.com]

The idea is to bake a texture that holds bone assignments for each vertex. Then bake bone animation to separate textures.
This way animations can be shared between different meshes .
Also animation texture sizes are much smaller as it only requires 2 pixels per frame per bone to store.

This sounds like a great idea and it would be cool to have support for it in Labs.

chf
I am stuck with this error message...

Error 
Error rendering child: /out/pyro_smoker/pre_render 
Warning 
Python error: Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 1321, in renderAndExport
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 1109, in renderAll
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 1097, in renderAll
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 566, in renderFinalColor
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 554, in renderFinalColor
File "labs::Driver/flipbook_textures::1.0, PythonModule", line 483, in setColorSpace
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.561/houdini/python3.7libs\hou.py", line 74509, in setOCIODisplayView
return _hou.SceneViewer_setOCIODisplayView(self, display, view)
hou.OperationFailed: The attempted operation failed.
Invalid display or view name

any suggestions on what might be the problem?

echo $OCIO

ankoro
Hi!

I'm getting the above error too.

In my case Final Color, Non-Emissive is output.
But then I get an error.

This symptom did not occur when I set the aces color space,
but I have to use it with gamma 2.2.

flipbook _texture node is very fast and nice so I hope this problem is solved！

Thank you

chris_yang
Hi,

I'm running into a similar problem with this ROP.

Error
Error rendering child: /out/flipbook_textures1/pre_render
Warning
Python error: Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "labs:river/flipbook_textures::1.0, PythonModule", line 1321, in renderAndExport
File "labs:river/flipbook_textures::1.0, PythonModule", line 1109, in renderAll
File "labs:river/flipbook_textures::1.0, PythonModule", line 1099, in renderAll
File "labs:river/flipbook_textures::1.0, PythonModule", line 889, in renderMDC
File "labs:river/flipbook_textures::1.0, PythonModule", line 829, in renderMDC
File "labs:river/flipbook_textures::1.0, PythonModule", line 500, in setColorSpace
AttributeError: 'GeometryViewport' object has no attribute 'setSceneGamma'


Renders the Final Color, Non-Emissive Color, and Depth passes.
But Errors out on the MDC , Surface Normal, and Motion Vector passes. image.png

winterlang157
Hello MaiAo,

Pardon me for keep spamming question soo much.
I see this another error message that pops up when I hit the Export all texture button.

Image Not Found

Would u know how to solve this issue?

Thanks in advance.

winterlang157
Hello MaiAo,

Nice to finally get your help on this matter
I tried to check for the Loaded Packages, I cant seem to find it.
I'll provide the snapshot of the details shown on the Houdini I'm using.

I've also tried uninstalling Labs and update the latest build of Labs too.
still getting the same error message when I hit render.

Am I doing smthing wrong? I would really like to learn how to use this amazing tool if you could help guide me on this.

Looking forward to your reply.

echo $SIDEFXLABS