# USD **URL:** https://forum.aousd.org/c/community/usd/7.md?page=1 [Latest](https://forum.aousd.org/latest.md) · [Categories](https://forum.aousd.org/categories.md) · [Tags](https://forum.aousd.org/tags.md) **Page:** 2 --- ## [Layer::ExportToString produces corrupt USDA string in memory](https://forum.aousd.org/t/layer-exporttostring-produces-corrupt-usda-string-in-memory/2946)
**Author:** [@evanburkert](https://forum.aousd.org/u/evanburkert)\ **Replies:** 3\ **Last updated:** [June 10, 2026, 9:27pm UTC](https://forum.aousd.org/t/layer-exporttostring-produces-corrupt-usda-string-in-memory/2946 "2026-06-10T21:27:33Z")
I am trying to use the in memory export to USDA SdfLayer::ExportToString, but for nearly every hierarchy encountered it generates a corrupted USDA string with malformed vertices/indices. Here is a simple gummy bear for e… --- ## [How to suppress warnings from NamespaceEditor](https://forum.aousd.org/t/how-to-suppress-warnings-from-namespaceeditor/2862)
**Author:** [@rkat](https://forum.aousd.org/u/rkat)\ **Replies:** 4\ **Last updated:** [June 9, 2026, 9:48am UTC](https://forum.aousd.org/t/how-to-suppress-warnings-from-namespaceeditor/2862 "2026-06-09T09:48:16Z")
Hi there, When I use the NamespaceEditor as shown below, I receive the following warning messages. However, this relocation is intentional, and the result is correct, so I would prefer not to have these warnings appear… --- ## [NVIDIA Omniverse Custom Extension: From Scan to Digital Twin](https://forum.aousd.org/t/nvidia-omniverse-custom-extension-from-scan-to-digital-twin/2927)
**Author:** [@Finger](https://forum.aousd.org/u/Finger)\ **Replies:** 1\ **Last updated:** [June 2, 2026, 3:51pm UTC](https://forum.aousd.org/t/nvidia-omniverse-custom-extension-from-scan-to-digital-twin/2927 "2026-06-02T15:51:32Z")
NVIDIA Omniverse is showcasing a demo application that utilizes CurvSurf FindSurface technology. Here are the key features: Users can upload point clouds stored on their computers directly into the Omniverse App. FindS… --- ## [Layer displayName](https://forum.aousd.org/t/layer-displayname/2926)
**Author:** [@mreinhard](https://forum.aousd.org/u/mreinhard)\ **Replies:** 5\ **Last updated:** [June 2, 2026, 3:26pm UTC](https://forum.aousd.org/t/layer-displayname/2926 "2026-06-02T15:26:01Z")
Hello, currently a layer’s display name is deduced from its identifier. We are using URIs of the form: uriIdentifier:some/path?asset=myAsset&version=myVersion#remapping=/path/to/local/data So, since the displayName i… --- ## [Import usdc/usdz from memory](https://forum.aousd.org/t/import-usdc-usdz-from-memory/2805)
**Author:** [@mwestphal](https://forum.aousd.org/u/mwestphal)\ **Replies:** 17\ **Last updated:** [May 29, 2026, 5:03pm UTC](https://forum.aousd.org/t/import-usdc-usdz-from-memory/2805 "2026-05-29T17:03:21Z")
/Hi, Im a programmer working on a reader of usd files, I’m able to read from disk without issues but I want to be able to read from memory. I’m able to read .usda file from memory alrightm using sdfLayer::ImportFromStr… --- ## [Associating multiple SkelAnimations to a given Skeleton?](https://forum.aousd.org/t/associating-multiple-skelanimations-to-a-given-skeleton/2925)
**Author:** [@deadpin](https://forum.aousd.org/u/deadpin)\ **Replies:** 1\ **Last updated:** [May 28, 2026, 7:04am UTC](https://forum.aousd.org/t/associating-multiple-skelanimations-to-a-given-skeleton/2925 "2026-05-28T07:04:15Z")
Imagine you have a Skeleton and you want to have multiple animations associated with it. For example, you have a rigged “Car” Skeleton where there’s both an “anim\_doors” SkelAnimation and an “anim\_wheels” SkelAnimation t… --- ## [SPDX Identifier](https://forum.aousd.org/t/spdx-identifier/2857)
**Author:** [@nvmkuruc](https://forum.aousd.org/u/nvmkuruc)\ **Replies:** 2\ **Last updated:** [May 20, 2026, 8:25pm UTC](https://forum.aousd.org/t/spdx-identifier/2857 "2026-05-20T20:25:08Z")
Is LicenseRef-TOST-1.0 the correct SPDX Identifier for OpenUSD? Thanks! --- ## [Gaussian Splat rendering for Houdini Solaris, built on USD v26.03](https://forum.aousd.org/t/gaussian-splat-rendering-for-houdini-solaris-built-on-usd-v26-03/2921)
**Author:** [@plattipus](https://forum.aousd.org/u/plattipus)\ **Replies:** 1\ **Last updated:** [May 15, 2026, 5:15pm UTC](https://forum.aousd.org/t/gaussian-splat-rendering-for-houdini-solaris-built-on-usd-v26-03/2921 "2026-05-15T17:15:11Z")
Hi all, We’re Plattipus Research and Production Lab. Inspired by the new UsdVolParticleField3DGaussianSplat schema introduced in OpenUSD v26.03, we built Houdini Solaris integration — and we’re open-sourcing it today. … --- ## [Updated LOD proposal](https://forum.aousd.org/t/updated-lod-proposal/2922)
**Author:** [@JimAtkinson](https://forum.aousd.org/u/JimAtkinson)\ **Replies:** 0\ **Last updated:** [May 14, 2026, 10:33pm UTC](https://forum.aousd.org/t/updated-lod-proposal/2922 "2026-05-14T22:33:32Z")
There is an updated version of the LOD proposal available here: https://github.com/PixarAnimationStudios/OpenUSD-proposals/pull/81 This version of the proposal was guided by an implementation which worked out many of t… --- ## [Visibility setting for the prototype of PointInstancer](https://forum.aousd.org/t/visibility-setting-for-the-prototype-of-pointinstancer/2919)
**Author:** [@BigRayLee](https://forum.aousd.org/u/BigRayLee)\ **Replies:** 1\ **Last updated:** [May 12, 2026, 6:53pm UTC](https://forum.aousd.org/t/visibility-setting-for-the-prototype-of-pointinstancer/2919 "2026-05-12T18:53:29Z")
Hello, I am trying to export the instancing system from our system to USD format. Is it possible to set the visibility of the original prim to “invisible”, and when referencing it as a prototype prim, set it to “inherite… --- ## [BowerBot: AI agent that assembles production-correct OpenUSD scenes from plain English](https://forum.aousd.org/t/bowerbot-ai-agent-that-assembles-production-correct-openusd-scenes-from-plain-english/2905)
**Author:** [@ArturoRangel](https://forum.aousd.org/u/ArturoRangel)\ **Replies:** 0\ **Last updated:** [April 17, 2026, 2:05am UTC](https://forum.aousd.org/t/bowerbot-ai-agent-that-assembles-production-correct-openusd-scenes-from-plain-english/2905 "2026-04-17T02:05:24Z")
Built an open-source AI agent that takes a plain English scene description and outputs a production-correct OpenUSD scene hierarchy, materials, lighting, validation. Opens in any USD-compatible DCC without conversion… --- ## [Dynamic USD in NVIDIA Omniverse](https://forum.aousd.org/t/dynamic-usd-in-nvidia-omniverse/2898)
**Author:** [@Mohit](https://forum.aousd.org/u/Mohit)\ **Replies:** 1\ **Last updated:** [April 15, 2026, 12:06pm UTC](https://forum.aousd.org/t/dynamic-usd-in-nvidia-omniverse/2898 "2026-04-15T12:06:46Z")
Hii there, we have parametric modelling in CAD. for now lets say using CATIA we an bind them with relations. How can we do the exact using usd. I am trying to alter the usd file by building a python UI extension integr… --- ## [Unexpected calls to custom ArResolver \_CreateDefaultContextForAsset for uriSchemes list longer than 1](https://forum.aousd.org/t/unexpected-calls-to-custom-arresolver-createdefaultcontextforasset-for-urischemes-list-longer-than-1/2881)
**Author:** [@JStroudBrahma](https://forum.aousd.org/u/JStroudBrahma)\ **Replies:** 2\ **Last updated:** [April 14, 2026, 10:19am UTC](https://forum.aousd.org/t/unexpected-calls-to-custom-arresolver-createdefaultcontextforasset-for-urischemes-list-longer-than-1/2881 "2026-04-14T10:19:37Z")
Hi, I have a query around the calling of \_CreateDefaultContextForAsset by the resolver.cpp implementation and how it is mapping scheme to resolver. I’ve recently noticed some unexpected behaviour from our in-house Usd … --- ## [Using displayColor as a fallback for Preview Surface](https://forum.aousd.org/t/using-displaycolor-as-a-fallback-for-preview-surface/2778)
**Author:** [@dziegler](https://forum.aousd.org/u/dziegler)\ **Replies:** 1\ **Last updated:** [April 13, 2026, 1:51am UTC](https://forum.aousd.org/t/using-displaycolor-as-a-fallback-for-preview-surface/2778 "2026-04-13T01:51:25Z")
I would like to use displayColor as a fallback when the texture file is missing in UsdUvTexture. However, I was unable to connect the fallback parameter to a primVarReader node and get the expected result. Is there anoth… --- ## [Flatten but keep variant sets?](https://forum.aousd.org/t/flatten-but-keep-variant-sets/276)
**Author:** [@olihey](https://forum.aousd.org/u/olihey)\ **Replies:** 3\ **Last updated:** [April 13, 2026, 1:41am UTC](https://forum.aousd.org/t/flatten-but-keep-variant-sets/276 "2026-04-13T01:41:55Z")
Hej, We have a USD pipeline that use referencing heavily but sometimes we want to ship of a flatten USD file to 3rd parties. Problem is, if we flatten the stage the variant sets get also resolved (removed) and only the… --- ## [Large USD file creation and accumulation of memory - proper way to fix?](https://forum.aousd.org/t/large-usd-file-creation-and-accumulation-of-memory-proper-way-to-fix/2893)
**Author:** [@deadpin](https://forum.aousd.org/u/deadpin)\ **Replies:** 3\ **Last updated:** [April 9, 2026, 11:05pm UTC](https://forum.aousd.org/t/large-usd-file-creation-and-accumulation-of-memory-proper-way-to-fix/2893 "2026-04-09T23:05:14Z")
During large point cloud exports we have run into obscene amounts of runtime memory being consumed as each frame is written into the file. Each frame stair-steps the memory upwards until OOM. However, we noticed that me… --- ## [AOUSD Build Interest Group - OpenUSD Binary Package Poll](https://forum.aousd.org/t/aousd-build-interest-group-openusd-binary-package-poll/2879)
**Author:** [@laserallan](https://forum.aousd.org/u/laserallan)\ **Replies:** 0\ **Last updated:** [March 31, 2026, 4:38pm UTC](https://forum.aousd.org/t/aousd-build-interest-group-openusd-binary-package-poll/2879 "2026-03-31T16:38:16Z")
The Alliance for OpenUSD (AOUSD) Build Interest Group is exploring whether it should supply OpenUSD binaries, and if so, in what form. To inform that decision, we’re asking the broader OpenUSD community for your preferen… --- ## [Anyone has a usd with the new Gaussian splat feature?](https://forum.aousd.org/t/anyone-has-a-usd-with-the-new-gaussian-splat-feature/2878)
**Author:** [@BaptistePerrin](https://forum.aousd.org/u/BaptistePerrin)\ **Replies:** 3\ **Last updated:** [March 31, 2026, 8:51am UTC](https://forum.aousd.org/t/anyone-has-a-usd-with-the-new-gaussian-splat-feature/2878 "2026-03-31T08:51:53Z")
Hi everyone, I’m currently exploring workflows around Gaussian Splatting and had a quick question. I’m specifically looking for assets or datasets using Gaussian splats, ideally compatible with USD workflows or the new… --- ## [Texture map variants](https://forum.aousd.org/t/texture-map-variants/2005)
**Author:** [@StormCrowdFactory](https://forum.aousd.org/u/StormCrowdFactory)\ **Replies:** 7\ **Last updated:** [March 30, 2026, 1:33pm UTC](https://forum.aousd.org/t/texture-map-variants/2005 "2026-03-30T13:33:20Z")
Hello, I’m trying to figure out how to create a texture map variant across a crowd of characters. For example I have 100 characters each wearing a hat. The hat is assigned a USDPreviewmaterial with a texture wired into… --- ## [Handling diffuse weight in USD Material Exporting](https://forum.aousd.org/t/handling-diffuse-weight-in-usd-material-exporting/2875)
**Author:** [@BigRayLee](https://forum.aousd.org/u/BigRayLee)\ **Replies:** 1\ **Last updated:** [March 23, 2026, 5:04pm UTC](https://forum.aousd.org/t/handling-diffuse-weight-in-usd-material-exporting/2875 "2026-03-23T17:04:19Z")
I was attempting to export materials from our internal software. For example, the diffuse component includes both a color and a weight parameter, where the weight can either be a scalar value or driven by a texture map. … --- ## [Normal texture shader](https://forum.aousd.org/t/normal-texture-shader/2873)
**Author:** [@BigRayLee](https://forum.aousd.org/u/BigRayLee)\ **Replies:** 4\ **Last updated:** [March 23, 2026, 11:06am UTC](https://forum.aousd.org/t/normal-texture-shader/2873 "2026-03-23T11:06:54Z")
We are currently trying to export our scene to the USD format. For normal textures, if we already have a tangent-space normal map with values in the 0,1 range, why do we need to remap it to the -1,1 range? What is the p… --- ## [Proposal: Adding Back Plate and Image Plane Support to USD](https://forum.aousd.org/t/proposal-adding-back-plate-and-image-plane-support-to-usd/2874)
**Author:** [@denisey](https://forum.aousd.org/u/denisey)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 6:44pm UTC](https://forum.aousd.org/t/proposal-adding-back-plate-and-image-plane-support-to-usd/2874 "2026-03-18T18:44:30Z")
Hello! I’ve made a PR proposal for adding back plate and eventually image plane support in USD along with introducing a Gaussian thin lens camera model to interact with these features. Back plates can be thought of as a… --- ## [Single or multiple USD proxy nodes in Maya?](https://forum.aousd.org/t/single-or-multiple-usd-proxy-nodes-in-maya/2852)
**Author:** [@mostafa](https://forum.aousd.org/u/mostafa)\ **Replies:** 3\ **Last updated:** [March 10, 2026, 9:03pm UTC](https://forum.aousd.org/t/single-or-multiple-usd-proxy-nodes-in-maya/2852 "2026-03-10T21:03:06Z")
Hey Guys I’m wondering which approach is more effective: handling all USD composition entirely in the background and loading only the latest composed USD file into Maya as a single final stage, or treating USD files as … --- ## [Isaac Sim | Greyed Parameters - usda Script Manipulation](https://forum.aousd.org/t/isaac-sim-greyed-parameters-usda-script-manipulation/2871)
**Author:** [@aperaturevision](https://forum.aousd.org/u/aperaturevision)\ **Replies:** 1\ **Last updated:** [March 9, 2026, 7:08pm UTC](https://forum.aousd.org/t/isaac-sim-greyed-parameters-usda-script-manipulation/2871 "2026-03-09T19:08:31Z")
Greetings, all! I hope my topic finds you well. This might be a slight stretch, though have a USD-related question for Nvidia’s Isaac Sim. For those familiar with the program, you may know that there are certain inacc… --- ## [Evaluating pinned curves](https://forum.aousd.org/t/evaluating-pinned-curves/2868)
**Author:** [@JohnHaddon](https://forum.aousd.org/u/JohnHaddon)\ **Replies:** 3\ **Last updated:** [March 4, 2026, 9:41am UTC](https://forum.aousd.org/t/evaluating-pinned-curves/2868 "2026-03-04T09:41:30Z")
Hi all, I’m dealing with the pinned wrap mode for UsdGeomBasisCurves for the first time, and unless I’ve misunderstood something, there seems to be a bit of a discrepancy between the documentation and the handling in Hy… --- ## [Did USD docs move?](https://forum.aousd.org/t/did-usd-docs-move/2865)
**Author:** [@SteveHwan](https://forum.aousd.org/u/SteveHwan)\ **Replies:** 4\ **Last updated:** [February 26, 2026, 9:29pm UTC](https://forum.aousd.org/t/did-usd-docs-move/2865 "2026-02-26T21:29:16Z")
I was using one of my bookmarks to Prim reference (This bboard won’t even let me post the link normally - it keeps converting it to a link, and then that link redirects) graphics dot pixar dot com usd/dev/api/class\_us… --- ## [Earth curvature in ECEF coordinate systems](https://forum.aousd.org/t/earth-curvature-in-ecef-coordinate-systems/2863)
**Author:** [@xlr8.vision](https://forum.aousd.org/u/xlr8.vision)\ **Replies:** 2\ **Last updated:** [February 24, 2026, 8:30am UTC](https://forum.aousd.org/t/earth-curvature-in-ecef-coordinate-systems/2863 "2026-02-24T08:30:32Z")
Hello everyone, is there an application, with which I can convert 3D models of long straight roads to realistic and accurate .usd objects which are aligning/adapting on the real curvature of the Earth (surface), while b… --- ## [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… --- ## [Custom memory allocation when integrating OpenUsd](https://forum.aousd.org/t/custom-memory-allocation-when-integrating-openusd/2858)
**Author:** [@koen](https://forum.aousd.org/u/koen)\ **Replies:** 2\ **Last updated:** [February 17, 2026, 2:05am UTC](https://forum.aousd.org/t/custom-memory-allocation-when-integrating-openusd/2858 "2026-02-17T02:05:07Z")
Hello all, I noticed several (games ) teams that are interested in integrating OpenUsd in their own pipeline end up writing complicated wrappers to isolate OpenUsd from the main code as much as possible because of the m… --- ## [HasSpline fails for attributes with spline and time samples](https://forum.aousd.org/t/hasspline-fails-for-attributes-with-spline-and-time-samples/2854)
**Author:** [@barbalt](https://forum.aousd.org/u/barbalt)\ **Replies:** 2\ **Last updated:** [February 12, 2026, 3:40pm UTC](https://forum.aousd.org/t/hasspline-fails-for-attributes-with-spline-and-time-samples/2854 "2026-02-12T15:40:04Z")
Hello, As the title says, the function HasSpline in an attribute fails if that attribute has both splines and time samples. Is that expected? I’ve tested with usd 25.11 and 24.11 Consider the following code: stage = U… [Previous page](https://forum.aousd.org/c/community/usd/7.md) [Next page](https://forum.aousd.org/c/community/usd/7.md?page=2)