AutoGineer
Generated banner for Omniverse Realtime Viewer
Generated logo for Omniverse Realtime Viewer

Omniverse Realtime Viewer

NVIDIAOfficialCreated by NVIDIA Omniverse

  • Skill
  • Tool integration
  • Software development
  • Apache-2.0
  • Medium risk
Download ZIP

From the author

Use as the top-level router for Omniverse Realtime Viewer USD apps, XR delivery, SPG GPU processing, stylized rendering, and focused viewer reference documents.
— the description by NVIDIA Omniverse

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

  1. Download the skill as a ZIP:

    https://mp-staging.autogineer.com/agent-skills/nvidia/omniverse-realtime-viewer/download

  2. Unzip 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

  1. When delivery is explicit, select its recipe through references/routing.md and follow its current phase. Otherwise start with references/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.

  2. Resolve the selected libraries through references/dependencies/README.md. Preserve the project's manifest unless an upgrade is requested.

  3. Build a working frame and camera interaction in the chosen shell, then add the requested capabilities. Read references/conventions.md for shared input, camera, selection, and protocol conventions.

  4. Use references/viewer-ux-workflow/README.md for broader interface design. Loading, selection feedback, errors, and input responsiveness belong in the first working app, alongside rendering.

  5. Validate the actual delivery path with references/validation.md. A browser screenshot does not validate a native window or a different transport.

Architecture

OwnerResponsibility
Viewer runtimeOwn the live OVStage, publication clock, OVRTX renderer, scene changes, and render stepping.
UI and input adapterDisplay frames and copied app state; send user intent to the runtime owner.
Storage/query/simulation workersPerform their assigned work and return results through the selected integration boundary.
Delivery adapterPresent 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.

Files

references/ovxr-composition-ui-validation/owned-orchestration.md

<!-- SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. -->

<!-- SPDX-License-Identifier: Apache-2.0 -->

Application-owned IWER orchestration

Generate a supervisor in the application for its web endpoint, renderer/runtime, IWER driver, readiness gates, deadlines, logs and cleanup. This Markdown bundle ships the implementation contract; it does not supply a runner to invoke. The supervisor is validation infrastructure, not the production XR frame loop.

Readiness order

For a client-gated runtime, use these state transitions:

  1. Validate commands, artifact destination and port ownership before launch.

  2. Start the web endpoint and attribute its listener to the owned process.

  3. Start the renderer; wait for its runtime listener and attachment-start marker.

  4. Start IWER so its client can connect while renderer initialization continues.

  5. Wait for renderer/stage readiness, then XR-context readiness.

  6. Require a submitted successful frame before accepting driver evidence.

  7. Wait for the driver result, then clean up the recorded children.

Starting the driver before listener readiness creates a race. Waiting for a client-bound XR context before starting its client creates a circular wait. Use stable application lifecycle markers; do not infer readiness from FPS logs.

Plan data

Keep a plan in the generated application with four named sections:

  • ports: loopback endpoints, fixed only when required by the runtime;

  • processes: executable/argument arrays, working directory, environment, owned listeners and graceful stop signal for each child;

  • steps: ordered start, wait-HTTP, wait-log and wait-exit actions, each with a deadline and semantic state name;

  • cleanupOrder: reverse dependencies, normally driver, renderer, then web.

An individual process and step can use this shape:

{
  "process": {"name": "web", "command": ["web-executable", "web-entrypoint"],
              "cwd": "application-root", "ownsPorts": ["web"]},
  "step": {"action": "wait_log", "process": "renderer",
           "regex": "runtime listener ready", "timeoutSeconds": 30,
           "state": "RUNTIME_LISTENER_READY"}
}

These field names describe application data, not SDK exports. Resolve executable paths and arguments explicitly. Validate any interpolation before launch and reject unresolved placeholders. Keep credentials out of plans and logs.

Supervisor algorithm

  1. Allocate a unique run ID and new artifact directory. Snapshot existing listeners; reject a requested occupied endpoint without stopping its owner. For automatically selected ports, account for allocation/bind races and require the child to report the endpoint it actually bound.

  2. Start each child without a shell, in its own owned process group or Windows Job Object. Record PID, start identity, executable, run ID and group/job. External renderers or services remain external even if their ports match.

  3. Continuously drain stdout/stderr into separate bounded buffers and full logs; decode invalid bytes without stopping the reader. Readiness checks inspect those buffers while also watching process exit and the monotonic deadline.

  4. Check HTTP status and expected body for web readiness. For native listeners, verify ownership and the application marker; an unrelated open port is not readiness. A child exit before its gate is a distinct failure.

  5. On timeout, cancellation, driver failure or interrupt, record the current phase and enter one idempotent cleanup path. Stop new driver/input work, request graceful child shutdown, and continue draining output.

  6. After bounded grace, terminate only a child/group whose recorded identity still matches. Recheck descendants and owned endpoints; never kill by a substring, shared process name or port alone. Stop when identity is uncertain and report the unresolved owner rather than terminating unrelated work.

  7. Join log readers and write a final result even when initialization failed. Verify owned children/groups exited and owned listeners/SHM resources were released or intentionally retained by their owner. Otherwise report cleanup-failed and preserve diagnostic identities.

Use monotonic clocks for all deadlines. The owner must be able to cancel a wait without waiting for its full timeout. POSIX process identity can combine PID, start time and process group; Windows should use owned handles/Job Objects. If reliable identity inspection is unavailable, fail that cleanup capability explicitly instead of weakening it to a global process-name search.

Result and hardware-free tests

Write a result containing run ID, final status, failure phase/reason, ordered state transitions and timestamps, per-process exit codes/log paths, listener identities, cleanup errors and remaining owned resources. A dry run resolves and validates the plan without starting processes or reserving their services.

Before a live run, test the generated supervisor with synthetic children that emit readiness markers: successful completion; a missing marker timeout; child exit before readiness; an interrupt while waiting; and an unrelated listener/process that must survive. Require a final failure result and no owned survivors in each failed case. Synthetic success validates orchestration only; first rendered/submitted/decoded XR pixels remain separate live gates.

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