Omniverse Realtime Viewer
NVIDIAOfficialCreated by NVIDIA Omniverse
- Skill
- Tool integration
- Software development
- Apache-2.0
- Medium risk
AutoGineer summary
Written by AutoGineer from the skill’s own files, not by the author
The Omniverse Realtime Viewer skill acts as a central routing and architectural framework for developing USD-based 3D viewer applications. It provides a structured approach to composing rendering, scene state, and delivery mechanisms, ensuring that developers can integrate OVRTX rendering, OVStage scene management, and various UI or streaming adapters effectively. The skill emphasizes a modular architecture where the viewer runtime, UI/input adapters, and delivery systems are decoupled, allowing for consistent behavior across local and streamed environments.
What it does
- Provides a routing architecture for USD viewer apps, XR delivery, and GPU-accelerated rendering.
- Defines the separation of concerns between viewer runtime, UI adapters, and delivery systems.
- Offers guidance on integrating OVRTX for high-fidelity 3D rendering.
- Establishes conventions for camera interaction, scene state management, and input handling.
- Supports the implementation of specialized features like stylized rendering and CAE/CFD visualization.
- Provides protocols for agent-to-UI communication and scene control.
When to use it
- When starting the development of a new USD-based realtime viewer application.
- When integrating advanced rendering features like stylized visualization or AOV switching.
- When building XR or spatial editing capabilities into an existing Omniverse application.
- When you need to standardize the architecture for local and streamed viewer deployments.
- When implementing chat-driven scene control or agent-based inspection of a 3D scene.
Advantages
- Promotes a clean, modular architecture that separates rendering logic from UI and transport.
- Ensures consistent behavior across different delivery methods, such as local windows or WebRTC streaming.
- Provides clear paths for extending functionality without disrupting the core viewer runtime.
- Facilitates the integration of complex simulation and visualization data into the viewer.
- Standardizes conventions for scene state, selection, and camera control.
Usage examples
- “How do I set up a basic USD viewer application using the Omniverse Realtime Viewer architecture?”
- The agent will guide you to start with the viewer app reference, resolve dependencies, and implement the core runtime owner to manage the OVStage and OVRTX renderer.
- “I need to add stylized rendering to my existing viewer. Where should I start?”
- The agent will direct you to the stylized visualization references to implement the required USD/Lua/CUDA nodes within your existing runtime owner.
- “How can I enable an AI agent to control the viewer scene?”
- The agent will point to the A2UI Scene Copilot reference to implement an operation interface that allows the agent to send commands through the existing runtime owner.
- “How do I switch between different render outputs like beauty and depth in my viewer?”
- The agent will explain how to use the AOV switching reference to map RenderVars and update the RenderProduct's orderedVars through the runtime owner.
Install
Download the skill as a ZIP:
https://autogineer.com/agent-skills/nvidia/omniverse-realtime-viewer/downloadUnzip it into the cross-client skills folder of your project:
mkdir -p .agents/skills && unzip omniverse-realtime-viewer.zip -d .agents/skills
Documentation by NVIDIA Omniverse
<!-- SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
Omniverse Realtime Viewer
Build responsive USD viewers by composing OVRTX rendering, OVStage scene state, and the delivery/UI libraries appropriate to the app. Use this package for viewer architecture and interaction; use each selected SDK's upstream guidance for installation and exact release-specific APIs.
Start With The App
When delivery is explicit, select its recipe through
references/routing.mdand follow its current phase. Otherwise start withreferences/usd-viewer-app/README.md. For an existing app, keep its architecture and read only the references for the requested change. Broad app, conventions and UI catalogs are lookups as needed.Resolve the selected libraries through
references/dependencies/README.md. Preserve the project's manifest unless an upgrade is requested.Build a working frame and camera interaction in the chosen shell, then add the requested capabilities. Read
references/conventions.mdfor shared input, camera, selection, and protocol conventions.Use
references/viewer-ux-workflow/README.mdfor broader interface design. Loading, selection feedback, errors, and input responsiveness belong in the first working app, alongside rendering.Validate the actual delivery path with
references/validation.md. A browser screenshot does not validate a native window or a different transport.
Architecture
| Owner | Responsibility |
|---|---|
| Viewer runtime | Own the live OVStage, publication clock, OVRTX renderer, scene changes, and render stepping. |
| UI and input adapter | Display frames and copied app state; send user intent to the runtime owner. |
| Storage/query/simulation workers | Perform their assigned work and return results through the selected integration boundary. |
| Delivery adapter | Present locally or stream through ovstream; respect frame ownership and backpressure. |
Use OVRTX for USD/3D rendering. Browser apps display its WebRTC video; local apps present its output through their native shell. A missing GPU means rendering is unverified, not a reason to substitute a browser 3D renderer.
Keep viewer cameras, settings, effects, and transient edits in app-owned session
or runtime state so the source USD stays intact. Serialize scene mutation and
render stepping through the runtime owner. Read
references/ovstage-ovrtx-integration/README.md for that loop, then the population
or data-plane references when implementing scene loading or attribute writes.
Keep expensive loading and metadata work off the UI and render threads. Keep transport details behind a delivery adapter so camera, selection, properties, and loading state can be reused across local and streamed shells.
Add Capabilities As Needed
Use references/routing.md to select camera/picking, scene management, render
settings, cloud assets, simulation, editor tools, deployment, or CAE/CFD
visualization. Read the selected capability's implementation flow and its linked
contract; the full reference catalog is not a prerequisite for a first frame.
For simulation, use the routing reference's Simulation Ecosystem section plus
references/realtime-sim-integration/README.md. For UI-driven forces or control,
add references/interaction-round-trip/README.md.
For example scenes, use references/usd-sample-data/README.md. When a runtime
failure needs diagnosis, use references/troubleshooting/README.md and the
selected SDK's matching release guidance before changing the architecture.
Solid Modeling: Upstream First
For usd-brep, exact BRep, solid modeling, kernel failures, CAD topology, or
BrepArray questions, first read references/dependencies/README.md → USD BRep. Follow the
owning repository's current agent guidance, skills, operation docs, and package
API before selecting local integration references. Discover the upstream router
rather than assuming skill names or directory layouts remain fixed. Upstream
owns modeling semantics, schema rules, tuning, and diagnostics; this package
owns OVRTX display, worker handoff, selection mapping, and publication timing.
GPU Processing And Stylized Viewers
For custom GPU processing, chained outputs and lens sampling, read
references/spg-processing/README.md. For toon, ink, technical/X-Ray styles,
geometry strokes or full wireframe, continue to
references/stylized-visualization/implementation.md. Its USD/Lua/CUDA starting
node and geometry/depth/composite build sequence work with the selected viewer
recipe; use references/stylized-visualization/style-recipes.md for the preset
math and references/stylized-visualization/README.md for supporting contracts.
Implement the result inside the existing OVRTX/runtime owner and deliver the
published processed output. These instructions do not require a sample checkout
or a prior stylized-rendering implementation.
For an optional usd-brep geometry source, first read
references/dependencies/README.md → USD BRep and the owning repository's
current agent guidance, skills, and operation docs; then read
references/stylized-visualization/usd-brep-source.md for the display boundary.
XR Viewers
For headsets, immersive viewers, or spatial editors, start with
references/xr-viewer-recipe/README.md. Resolve SDK setup and contracts through
references/dependencies/ovxr.md; the library owns OpenXR lifecycle and frame
submission. For controllers, hands, navigation, or scene tools, add
references/xr-spatial-input/README.md and
references/ovxr-python-interactions/README.md. For projection-integrated UI,
read references/ovxr-composition-ui/README.md and
references/ovxr-composition-ui-validation/README.md.
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references/stylized-visualization/usd-brep-source.md
<!-- SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
Optional USD BRep Geometry Source
Use when stylized CAD/technical viewers start from exact BRep rather than an
existing USD Mesh. First read dependencies/README.md → USD BRep, then the
owning repository's current AGENTS.md, skills router, operation docs, and
package README. Upstream owns modeling, schema, tessellation, and diagnostics;
this reference defines the handoff to the existing style compositor.
Public Artifact Boundary
Use the packaged usd_brep API and the selected artifact's stubs. Source-checkout
_omni_solid and debugger _smlib_dev examples are separate surfaces; do not
make developer Draw/topology APIs a public viewer requirement. Resolve package
and interpreter compatibility before choosing an in-process import. Prefer a
worker when coexistence with OVRTX/OVStage is unverified; exchange owned arrays
and files, never native BRep handles or OpenUSD objects.
Surface And Feature Representations
Tessellate with the public API and validate complete output before publishing.
Current upstream supports binding-owned contiguous NumPy mesh buffers and
source-face corner normals. to_numpy_arrays(face_varying_normals=True) yields
float32 points/normals, an int32 count-prefixed polygon stream, and per-face
normals. Decode counts/indices with bounds checks, preserve corner-normal order,
and declare USD faceVarying. Verify the method in the resolved artifact; use
the documented list output adapter if that artifact lacks NumPy output.
Normalize to the triangle-only, subdivision-none supported profile in
line-compositor-delivery.md. Do not assume every tessellated polygon is already
a triangle. Preserve logical part and face provenance through triangulation;
exclude unsupported topology with the existing diagnostic and fidelity rules.
The exact BRep remains the editable source; OVRTX renders the derived Mesh.
The public tessellate_boundaries API samples trimmed BRep edges and returns
points, per-edge counts, and borrowed edges. It is an optional feature source,
not an OVRTX renderer or a silhouette solver. Copy sampled coordinates while
the body is alive, skip degenerate polylines, and reacquire topology after edits.
Sampling reports and partial-output policies belong to upstream guidance.
Kernel edges include periodic seams and smooth joins. Classify design features using current upstream topology/adjacency guidance; do not draw every edge as a crease. Borrowed edge handles never cross the process boundary. Assign logical IDs scoped to a geometry revision and transform coordinates once into the same world space as the rendered mesh.
Sampled boundaries are polylines, whereas the canonical compositor consumes ordered independent segments. Convert them deterministically and apply its existing segment ID/dash phase rule. Continuous arc-length dashes are an explicit noncanonical polyline extension requiring separate temporal tests. BRep boundaries do not replace the mesh adjacency/view test for silhouettes. Only provide silhouette candidates when valid adjacent face data exists.
Occlusion, Revisions, And Evidence
Feed the same accepted tessellation to OVRTX and to the SPG private geometry-depth node. Exact edge samples can differ from the mesh by tessellation error; measure that error and refine rather than hiding it with a large depth bias. Keep mesh, feature arrays, transforms, selection provenance and exact asset on one revision. Discard stale worker results and show the last accepted frame during rebuilds. No browser 3D renderer or native BrepArray rendering capability is implied.
Run the existing preset and temporal gates on deterministic box, cylinder, trimmed/filleted and multi-part fixtures. Test seam suppression, smooth joins, sharp boundaries, silhouette transitions, hidden-line occlusion, mirrored/nonuniform transforms, invalid or partial tessellation, and selection after topology edits. Record package identity and whether lines use mesh inference or exact boundaries. The optional adapter does not broaden fidelity claims for unsupported meshes.
Provenance and independent fidelity checks
Record exact source identity and whether rendered meshes come directly from accepted kernel handles or from re-imported exact assets. Bind owned geometry arrays to SPG nodes; do not require CAD imports in the renderer just to shade those meshes. Use actual hollow/trimmed solids to test rear feature strokes and compare the old image equations on identical AOVs.
Validate exact export/import separately from tessellation and SPG processing. Closed-manifold status alone is insufficient: compare volume and geometric checks under a declared healing policy. If a round trip fails while direct tessellation renders correctly, retain the latter's scoped rendering evidence and report the exact-file failure. Neither path implies native analytic BREP rendering or exact boundary extraction from image AOVs.
Requirements and compatibility
Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta
“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.
Needs: Needs Python, Needs Node.js
The author says: Orchestrator skill. Downstream focused references may require NVIDIA GPUs, ovrtx, ovstream, ovui, OpenUSD, Python, Node/React, Tauri, Electron, C++, or cloud GPU deployment access depending on the selected viewer path.
Security
What our scanner noticed· Medium risk
- Large base64-encoded blobs
- Instructions that use the network
A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.
Attribution and licence
- Created by
- NVIDIA Omniverse
- Publisher
- NVIDIA (Official)
- Source
- NVIDIA/skills · skills/omniverse-realtime-viewer · commit fce3cca
- Licence
- Apache License 2.0 (redistribution allowed)
- LICENSE (added by AutoGineer from LICENSE-APACHE)
- ATTRIBUTION.md (written by AutoGineer)
- Synced
AutoGineer is not affiliated with or endorsed by NVIDIA Omniverse or NVIDIA.
Download ZIP
The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download omniverse-realtime-viewer.zip