# \#beginner **URL:** https://forum.aousd.org/tag/beginner/10.md [Latest](https://forum.aousd.org/latest.md) · [Categories](https://forum.aousd.org/categories.md) · [Tags](https://forum.aousd.org/tags.md) --- ## [USDseal Inspector](https://forum.aousd.org/t/usdseal-inspector/2947)
**Author:** [@Gerhard\_Schroeder](https://forum.aousd.org/u/Gerhard_Schroeder)\ **Replies:** 3\ **Last updated:** [July 2, 2026, 9:40pm UTC](https://forum.aousd.org/t/usdseal-inspector/2947 "2026-07-02T21:40:08Z")
Hi everyone, I’m Gerhard from viSales (Bochum, Germany). Honest intro first: I sit mostly on the visual / sales-communication side of OpenUSD, not the engineering side and my colleague Thomas Kumlehn is the one who join… --- ## [How to use the Hydra 2.0 API to parse geomSubset types](https://forum.aousd.org/t/how-to-use-the-hydra-2-0-api-to-parse-geomsubset-types/2870)
**Author:** [@zitai](https://forum.aousd.org/u/zitai)\ **Replies:** 0\ **Last updated:** [March 3, 2026, 2:13am UTC](https://forum.aousd.org/t/how-to-use-the-hydra-2-0-api-to-parse-geomsubset-types/2870 "2026-03-03T02:13:54Z")
At present, I am using the Hydra 1.0 API for parsing .usd files. Recently, I learned that upgrading to Hydra 2.0 API has brought many powerful features (thank you to all developers for your contributions). I want to migr… --- ## [Maya : hide usd hierarchy in outliner](https://forum.aousd.org/t/maya-hide-usd-hierarchy-in-outliner/2861)
**Author:** [@Domerian](https://forum.aousd.org/u/Domerian)\ **Replies:** 0\ **Last updated:** [February 19, 2026, 3:07pm UTC](https://forum.aousd.org/t/maya-hide-usd-hierarchy-in-outliner/2861 "2026-02-19T15:07:02Z")
Hello, I’m new to USD and I’d like to know if it’s possible to have the USD as a transform and a shape only? For example, to prevent the foliage of a tree from being moved independently of its trunk. Also, is it possible… --- ## [How to affect the rendered image by OpenExec](https://forum.aousd.org/t/how-to-affect-the-rendered-image-by-openexec/2838)
**Author:** [@rkat](https://forum.aousd.org/u/rkat)\ **Replies:** 6\ **Last updated:** [February 6, 2026, 6:35pm UTC](https://forum.aousd.org/t/how-to-affect-the-rendered-image-by-openexec/2838 "2026-02-06T18:35:39Z")
Hi, I am currently experimenting with a simple constraint implementation using OpenExec. My goal is to create a MyConstraintAPI that can be applied to xformable prims. This API has a relationship with a target xformable… --- ## [Creating new USD Stage via Python Console and Composer](https://forum.aousd.org/t/creating-new-usd-stage-via-python-console-and-composer/2795)
**Author:** [@aperaturevision](https://forum.aousd.org/u/aperaturevision)\ **Replies:** 6\ **Last updated:** [December 19, 2025, 6:18pm UTC](https://forum.aousd.org/t/creating-new-usd-stage-via-python-console-and-composer/2795 "2025-12-19T18:18:40Z")
Greetings, everyone! I am presently a beginner learning USD and Python together, and am currently following an online book as my onramp, titled, USD in One Weekend: 3. Creating an OpenUSD scene - OpenUSD in One Weekend … --- ## [Getting a list of all available AOVs from a Delegate](https://forum.aousd.org/t/getting-a-list-of-all-available-aovs-from-a-delegate/2776)
**Author:** [@sherholz](https://forum.aousd.org/u/sherholz)\ **Replies:** 4\ **Last updated:** [November 25, 2025, 4:05pm UTC](https://forum.aousd.org/t/getting-a-list-of-all-available-aovs-from-a-delegate/2776 "2025-11-25T16:05:36Z")
Hi, I am currently trying to determine whether there is a way in the Hydra API to query a list of all available AOVs. I know there is a way to check whether a RenderDelegate supports known/general AOV types that are co… --- ## [OpenUSD Tutor: GPT with Full 25.08 Docs Embedded and a Structured Learning Path](https://forum.aousd.org/t/openusd-tutor-gpt-with-full-25-08-docs-embedded-and-a-structured-learning-path/2729)
**Author:** [@danieldorado](https://forum.aousd.org/u/danieldorado)\ **Replies:** 2\ **Last updated:** [October 14, 2025, 8:45am UTC](https://forum.aousd.org/t/openusd-tutor-gpt-with-full-25-08-docs-embedded-and-a-structured-learning-path/2729 "2025-10-14T08:45:30Z")
Hey! I’ve created a custom GPT that embeds the full OpenUSD 25.08 (12/10/2025) Python documentation from the ./docs repo and includes a structured learning path for study and practice. I’m using it myself to prepare fo… --- ## [How to check if SdfPrimSpec is empty?](https://forum.aousd.org/t/how-to-check-if-sdfprimspec-is-empty/2707)
**Author:** [@nostromo](https://forum.aousd.org/u/nostromo)\ **Replies:** 1\ **Last updated:** [October 1, 2025, 1:37am UTC](https://forum.aousd.org/t/how-to-check-if-sdfprimspec-is-empty/2707 "2025-10-01T01:37:10Z")
I want to catch data that looks like this: over “foo” {}. That example would be considered “empty” However these are not empty: over “foo” (some=”thing”) {} - Defines some metadata, could be anything over SomeType “fo… --- ## [Rigging in USD. Mgear in Maya](https://forum.aousd.org/t/rigging-in-usd-mgear-in-maya/2699)
**Author:** [@danielwalo3D](https://forum.aousd.org/u/danielwalo3D)\ **Replies:** 3\ **Last updated:** [September 23, 2025, 3:25pm UTC](https://forum.aousd.org/t/rigging-in-usd-mgear-in-maya/2699 "2025-09-23T15:25:48Z")
Hello everyone, Just joined the USD community, looking for some guidance regarding USD and rigging. We are trying to transition our pipeline into USD and I wonder how well does USD integrates rigging within one DCC. O… --- ## [Instancing a point instancer seems to neglect xform transforms on parent prim](https://forum.aousd.org/t/instancing-a-point-instancer-seems-to-neglect-xform-transforms-on-parent-prim/2695)
**Author:** [@josephfernando](https://forum.aousd.org/u/josephfernando)\ **Replies:** 2\ **Last updated:** [September 21, 2025, 11:31pm UTC](https://forum.aousd.org/t/instancing-a-point-instancer-seems-to-neglect-xform-transforms-on-parent-prim/2695 "2025-09-21T23:31:05Z")
Hey USD gurus! I’ve got a simple point instancer which has a parent xform with a transform like this : instancer.usda #usda 1.0 def Xform "root" { def Xform "placement" ( ) { # Transform 5 units on… --- ## [Package an extended version of usd-core](https://forum.aousd.org/t/package-an-extended-version-of-usd-core/2685)
**Author:** [@yabent](https://forum.aousd.org/u/yabent)\ **Replies:** 0\ **Last updated:** [September 9, 2025, 3:33pm UTC](https://forum.aousd.org/t/package-an-extended-version-of-usd-core/2685 "2025-09-09T15:33:39Z")
Hello, I’m trying to package an extended version of usd-core so I can open usdview from my app using the pxr.Usdviewq module the same way it’s being used in this python script. I tried to create a WHL file using the se… --- ## [Flipbook keyframe animation with individual mesh per frame](https://forum.aousd.org/t/flipbook-keyframe-animation-with-individual-mesh-per-frame/2661)
**Author:** [@georginikolov](https://forum.aousd.org/u/georginikolov)\ **Replies:** 8\ **Last updated:** [September 4, 2025, 7:02am UTC](https://forum.aousd.org/t/flipbook-keyframe-animation-with-individual-mesh-per-frame/2661 "2025-09-04T07:02:44Z")
Hello all, I have a LiDAR point cloud animation which I want to generate a USD version of. I have different particles count possible in each frame, so I want to generate per-frame points mesh that I flip through on each… --- ## [How to copy a material prim from one layer to another?](https://forum.aousd.org/t/how-to-copy-a-material-prim-from-one-layer-to-another/2637)
**Author:** [@haggi](https://forum.aousd.org/u/haggi)\ **Replies:** 4\ **Last updated:** [August 14, 2025, 12:53pm UTC](https://forum.aousd.org/t/how-to-copy-a-material-prim-from-one-layer-to-another/2637 "2025-08-14T12:53:46Z")
Hi, for some diagnostic tasks I need to modify materials. My idea was to collect all materials copy them into a new stage do all modifications I need and save it as new file. This way I can layer it later to create my di… --- ## [Asset\_structure\_ref\_variantSet\_payloads](https://forum.aousd.org/t/asset-structure-ref-variantset-payloads/2000)
**Author:** [@jipee](https://forum.aousd.org/u/jipee)\ **Replies:** 11\ **Last updated:** [August 14, 2025, 12:32am UTC](https://forum.aousd.org/t/asset-structure-ref-variantset-payloads/2000 "2025-08-14T00:32:28Z")
Hi alls, I’m new in this forum, so it’s a first time! Hello USD wolrd :slight\_smile: I’m building an asset structure right now and I’ve reach a point that question me around the idea that a good way to handle shot comp… --- ## [Book Recommendation: Universal Scene Description in Action](https://forum.aousd.org/t/book-recommendation-universal-scene-description-in-action/2414)
**Author:** [@yizhou](https://forum.aousd.org/u/yizhou)\ **Replies:** 2\ **Last updated:** [August 11, 2025, 6:05pm UTC](https://forum.aousd.org/t/book-recommendation-universal-scene-description-in-action/2414 "2025-08-11T18:05:49Z")
Book Recommendation: Universal Scene Description in Action by Linfan Zhang & Andy Green https://www.manning.com/books/universal-scene-description-in-action If you’re a technical creative looking to dive into the world … --- ## [Purpose of UsdPhysicsRigidBodyDesc structure](https://forum.aousd.org/t/purpose-of-usdphysicsrigidbodydesc-structure/2612)
**Author:** [@untxen](https://forum.aousd.org/u/untxen)\ **Replies:** 1\ **Last updated:** [July 29, 2025, 1:43pm UTC](https://forum.aousd.org/t/purpose-of-usdphysicsrigidbodydesc-structure/2612 "2025-07-29T13:43:03Z")
Hi all! while working on with Physics I noticed the structure UsdPhysicsRigidBodyDesc. I am trying to understand the reason for its existance as I have not seen anything that consumes the struct directly. Does it play … --- ## [OpenUSD import in Unity with Materials](https://forum.aousd.org/t/openusd-import-in-unity-with-materials/2561)
**Author:** [@Faizan](https://forum.aousd.org/u/Faizan)\ **Replies:** 2\ **Last updated:** [July 4, 2025, 5:14pm UTC](https://forum.aousd.org/t/openusd-import-in-unity-with-materials/2561 "2025-07-04T17:14:09Z")
(I am new to usd format)I have imported NVDIA USD File assets in Unity and for this use the Importer by Unity (com.unity.importer.usd). It successfully showed the USD file in the scene as object but the problem is materi… --- ## [hdEmbree Build & Debug Problems with MSVS 2022](https://forum.aousd.org/t/hdembree-build-debug-problems-with-msvs-2022/2479)
**Author:** [@vbd](https://forum.aousd.org/u/vbd)\ **Replies:** 0\ **Last updated:** [May 28, 2025, 9:36am UTC](https://forum.aousd.org/t/hdembree-build-debug-problems-with-msvs-2022/2479 "2025-05-28T09:36:39Z")
To eventually create a Hydra render delegate for our inhouse renderer, I have taken a look at the hdEmbree example and started to gradually tweak it. However, MSVS 2022’s IntelliSense seems thoroughly confused with the r… --- ## [Custom Python Namespace for USD Plugin Custom Schema](https://forum.aousd.org/t/custom-python-namespace-for-usd-plugin-custom-schema/2463)
**Author:** [@Nick](https://forum.aousd.org/u/Nick)\ **Replies:** 0\ **Last updated:** [May 19, 2025, 6:32pm UTC](https://forum.aousd.org/t/custom-python-namespace-for-usd-plugin-custom-schema/2463 "2025-05-19T18:32:41Z")
I’ve created a new custom schema using the pxr\_plugin CMake convenience function, and everything builds correctly. However, I’ve noticed that the Python module gets installed under the default lib/python/pxr directory. I… --- ## [Stage variables for layer offset](https://forum.aousd.org/t/stage-variables-for-layer-offset/2379)
**Author:** [@josephfernando](https://forum.aousd.org/u/josephfernando)\ **Replies:** 3\ **Last updated:** [May 14, 2025, 12:02pm UTC](https://forum.aousd.org/t/stage-variables-for-layer-offset/2379 "2025-05-14T12:02:01Z")
Hello! I’m trying to prototype a workflow where we can to time offset our caches (references/payloads) based on stage variables. The idea is to have different layers with different offsets values so our caches look diff… --- ## [Modify absolute Textures Path from USD file](https://forum.aousd.org/t/modify-absolute-textures-path-from-usd-file/2435)
**Author:** [@william\_unst](https://forum.aousd.org/u/william_unst)\ **Replies:** 2\ **Last updated:** [May 8, 2025, 11:34pm UTC](https://forum.aousd.org/t/modify-absolute-textures-path-from-usd-file/2435 "2025-05-08T23:34:25Z")
Hi guys, quite new in the USD pipeline. We’re working on multiple workstations , and altough we’re working to uniform our work hierarchy. It does happen where shared USD files textures path aren’t the same between works… --- ## [How can I create materials programmatically code with hydra?](https://forum.aousd.org/t/how-can-i-create-materials-programmatically-code-with-hydra/2405)
**Author:** [@orhun](https://forum.aousd.org/u/orhun)\ **Replies:** 4\ **Last updated:** [May 6, 2025, 2:07am UTC](https://forum.aousd.org/t/how-can-i-create-materials-programmatically-code-with-hydra/2405 "2025-05-06T02:07:49Z")
Hi, How can I create materials programmatically with Hydra 2? I have been looking into HdMaterialNetwork2, and HdMaterialNode2, etc, but I am not sure whether I am on the correct path. Are there any resources, you cou… --- ## [Debug build not working](https://forum.aousd.org/t/debug-build-not-working/2384)
**Author:** [@DonovanWestwater](https://forum.aousd.org/u/DonovanWestwater)\ **Replies:** 10\ **Last updated:** [April 30, 2025, 6:32am UTC](https://forum.aousd.org/t/debug-build-not-working/2384 "2025-04-30T06:32:03Z")
I am trying to get my debug version of my C++ to work with OpenUSD. I have made a release build of OpenUSD and that works in release mode in my project but in debug it does not work. I looked around and came to the conc… --- ## [When did Relocates start?](https://forum.aousd.org/t/when-did-relocates-start/2371)
**Author:** [@SteveHwan](https://forum.aousd.org/u/SteveHwan)\ **Replies:** 3\ **Last updated:** [April 16, 2025, 9:35pm UTC](https://forum.aousd.org/t/when-did-relocates-start/2371 "2025-04-16T21:35:09Z")
Hey, when did the Relocates composition arc start? I was just reading some of the docs that referred to LIVERPS, and I could swear that it was just LIVRPS. But sure enough, there’s an entire r(E)locates composition arc … --- ## [What's the best way to see if a prim has a specific named collection?](https://forum.aousd.org/t/whats-the-best-way-to-see-if-a-prim-has-a-specific-named-collection/2355)
**Author:** [@SteveHwan](https://forum.aousd.org/u/SteveHwan)\ **Replies:** 3\ **Last updated:** [April 8, 2025, 12:18am UTC](https://forum.aousd.org/t/whats-the-best-way-to-see-if-a-prim-has-a-specific-named-collection/2355 "2025-04-08T00:18:49Z")
I want to see if my prim has a collection with a specific name or not. I tried on my own, but then asked nvidia’s ai code generator for help and it suggested this: Write a python function that takes a prim and a colle… --- ## [How to set Material Binding to None?](https://forum.aousd.org/t/how-to-set-material-binding-to-none/2045)
**Author:** [@ahren](https://forum.aousd.org/u/ahren)\ **Replies:** 5\ **Last updated:** [March 20, 2025, 5:28pm UTC](https://forum.aousd.org/t/how-to-set-material-binding-to-none/2045 "2025-03-20T17:28:42Z")
Hi there def Xform "Root" { def Capsule "Capsule" ( active = true prepend apiSchemas = \["MaterialBindingAPI"\] ) { uniform token axis = "Y" double height = 0.2 rel mate… --- ## [Using MaterialOverride Schema](https://forum.aousd.org/t/using-materialoverride-schema/2269)
**Author:** [@Nicola](https://forum.aousd.org/u/Nicola)\ **Replies:** 7\ **Last updated:** [February 27, 2025, 11:34am UTC](https://forum.aousd.org/t/using-materialoverride-schema/2269 "2025-02-27T11:34:16Z")
I’m experimenting the Hydra 2.0 and I’m trying to understand how I can use the MaterialOverride schema to apply tweaks to the material parameters using a UI. What is the correct way to specify material overrides in a usd… --- ## [Bare minimum UsdImagingGLEngine Code](https://forum.aousd.org/t/bare-minimum-usdimagingglengine-code/2260)
**Author:** [@MrMichael](https://forum.aousd.org/u/MrMichael)\ **Replies:** 3\ **Last updated:** [February 25, 2025, 2:24am UTC](https://forum.aousd.org/t/bare-minimum-usdimagingglengine-code/2260 "2025-02-25T02:24:01Z")
Hello! I’m working on a hobby project and I was wondering if anyone has the bare minimum pxr::UsdImagingGLEngine that I could learn and understand! I tried following the stageView.py but I seem to be stuck with the same… --- ## [Sharing a small USD project](https://forum.aousd.org/t/sharing-a-small-usd-project/2258)
**Author:** [@thayer](https://forum.aousd.org/u/thayer)\ **Replies:** 0\ **Last updated:** [February 21, 2025, 6:35pm UTC](https://forum.aousd.org/t/sharing-a-small-usd-project/2258 "2025-02-21T18:35:27Z")
Hi all, I wanted to share a small side-project I’ve been working on to better understand the ins-and-outs of working directly with USD content (as opposed to working in an application “native” representation and convert… --- ## [Hydra, custom shaders, and compute shader](https://forum.aousd.org/t/hydra-custom-shaders-and-compute-shader/2242)
**Author:** [@AlexLerouge](https://forum.aousd.org/u/AlexLerouge)\ **Replies:** 2\ **Last updated:** [February 20, 2025, 2:09pm UTC](https://forum.aousd.org/t/hydra-custom-shaders-and-compute-shader/2242 "2025-02-20T14:09:08Z")
Hey ! I’m tinkering with a small texture painting prototype with an hydra/storm viewport. C++/opengl/imgui Right now I have, only a custom red renderbuffer that exists in the gl context of my app, that I can display so… [Next page](https://forum.aousd.org/tag/beginner/10.md?match_all_tags=true&page=1&tags%5B%5D=beginner)