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Currently facing issues with file attachement //////////////////////////// OpenUSD Guide for (Student) Games //////////////////////////// Hello everyone! For the several weeks I have been looking into implementing OpenUSD into the pipeline of student gam... -
Hey, I just went back to the basics to better understand Houdini. In the course "Houdini for the new Artist", Tyler Bay explains Solaris (stage). When I import a scene, I get the error message "Could not open asset", I used a gltf file from sketchfab (ricocilliers). Is this due to my Houdin...
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I am applying materials to the USD file objects in Solaris using"name" attributes from groups. Then I can apply individual materials to "sphere" and "box": If I use the "Copy to Points" node it also works, but until I check the "Pack and Instantiate" option. Then I lost my groups, I could...
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Hello Magicians, I am having some fun learning a USD file format and I want to share my findings. After 20++ years in CG, I finally managed to create a poly plane! I reinvented the wheel trying to create a plane, sphere, and other basic shapes, but it was a good exercise that...
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I managed to find some time to make this tutorial on building USD hierarchies in SOPs. I couldn't find many resources on things like setting pivots and altering transforms so once I figured it all out I thought I'd share the approach. Hope someone out there finds it useful.
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[Tutorial] Intro: Hello Folks, I came up with a new workaround to work seamlessly between SOPs and LOPs, the idea about; why we can't consider the USD file as a container of data such as standard bgeo.sc? Let's replace it! So, this idea allows me to write caches on the desk once, instead of w...
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HI ! We have just started small new studio and we are at the point of choosing proper pipeline for us. we are free from any legacy and are able to build our pipeline from scratch we plan to switch to usd, but not sure what to use - Karma or Arnold. we have experience using both arnold and...
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Is there a way to connect the octane shader in Solaris to a collect node in order to be able to switch between renderers? There is no shader output by default
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Hello wizards, i'm trying to get the camera from the current stage and then get the frustum I'm following the Pixar API, but probably i'm missing something... Here my code: from pxr import Usd, UsdGeom, Sdf node = hou.pwd() stage = node.editableStage() # Add code to modify the st...
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I am trying out Octane in Solaris, but i can't find some of the options that usually live on the obj level, like OpenSubdiv and Tessellations, essentially the object Octane settings. Any idea where are those? Also how can i set the default Octane render settings? Display Options --> Render...
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Hi evryone, Does somebody have any experiences on crowd simulation export in usd file? I did a basic work around trying with: agent pack but it doesn't work unpack agent works well but to brut force for me If somebody have any idea? I gonna continue to workaround,...
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So it seems the only way to procedurally expand all the variants is using the explore variants LOP. The problem I get when using this is that the file I am exploring variants on which Is brought in using a reference LOP gets an error of not having a save path and it defaults to creating a new usd fi... -
I have a scene done entirely in the obj context for which I want to assign shading groups so that I can export it from Houdini and import it in Clarisse as USD and do the lookdev there. When exporting .obj files, just having the shop_materialpath attribute is enough to delineate the shading groups,...
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Houdini Karma USD MaterialX Texture Variations
4n7 posted a topic in Lighting & Rendering + Solaris!
I'm trying to create a deck of cards in USD, Assuming the correct method would be to create a single card and it have 52 variants of texture maps. I can get this in SOPS, and using a Principled Shader, but not with MaterialX So far I can almost get to what I want to do, what I don’t understand...
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Thanks to help from hoomans on the SideFX houdini forum, I have exported a textured model from Maya 2022 to USD, then imported into Houdini 19 as a LOP network. Unfortunately, the materials have come across with only the base color texture maps as a constant shader. I have to replace these basic s...
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Hi Is it possible to "transfer" the diffuse color information from a USD's materials to @Cd attribute while unpacking the USD?
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Hi I am trying to generate uv's on a USD scene, but I don't know how I should approach it. I would like to end up with a USD that is the same as what I started with, but with UV's. I can't wrap my head around, how to work with the geometry, without unpacking the USD to SOP level.
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Hi everyone . Is there any workflow on how to export from houdini a usd sequence to unreal engine Most tutorials out there all focus on exporting a single frame, so any tips on how to export an animation sequence of usd from houdini to unreal engine with all the materials/textures, lights, cameras e...
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Hi, We are currently looking for Houdini TDs at either site: Winnipeg: https://apply.workable.com/tangent-animation/j/E6A47258F2/ Toronto: https://apply.workable.com/tangent-animation/j/4C175DDE3B/ Vancouver https://apply.workable.com/tangent-animation/j/F36699AA07/ We are in the...
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Hi, I'm running into a small problem trying to automate a Daily Tool. Basically I want to be able to get the BBox of my asset to transform them accordingly next to each other for presentation. Only Problem is when I query the Bbox_size or min,max,etc... using the Vex functions(usd_getbbo... -
Hey all, I have a whole solaris setup and ready to render, I'm trying to do a slicker multi-shot workflow but I cant seem to get render frame ranges per shot. On the render settings node you cant specify the range, only on the very end USD_ROP node can you specify this. I've tried injectin...
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Hi all, I'm not a lighting or shading person. I'm barely a Houdini person, if the truth was told, but I struggle on... I am having a terrible time trying to figure out how to assign random textures to packed geometry in Solaris/Lops/USD/Karma (referred to as SULK from now on, OK?)...
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Hi guys, does anyone know how to set up the solaris physics simulation for layout to be able put geometry inside another geometry? I tried to compute again the simulation proxy but it doesn't work. They show in the Solaris that it's possible so I am confused how to do it. Here is a gif ima...
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Hi guys, I have an animated FBX file of a character with about 870 frames, it has one texture & the FBX file is 12.5mb After bringing that into Houdini 18 & into LOPs then adding a material node & then a USD ROP file the output USD file is 182mb Am I doing something wrong? or is there so...
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I am trying to get velocity motion blur and geometry motion blur in Solaris RednerMan 23.2 and Houdini 18.0.391, both of this motion blur working fine with karma I can't get this work in RednerMan in Solaris . All of this motion blur works outside Solaris , only inside Solaris RednerMan doesn't...
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