Document the 15625 scene partition cap for Isaac RTX renderer

[mataylor-nvidia]

Summary

• Document that Isaac RTX's rtx.scenedb.plugin caps the number of scene partitions at 15625; requesting more environments than that with scene partitioning enabled silently discards additional partitions and causes environments to share tiled camera views.
• Add a warning note to the scene partitioning section of the renderers overview doc.
• Add a corresponding Known Issues entry under the Renderers section, following the existing animated-curve scene-partition entry's format.

Type of change

• Documentation update

Release backport

• Backport this pull request to the active release branch after it merges into develop

Test plan

• uv run isaaclab -f passes (docs/rst formatting checks)
• Manually reviewed rendered structure/headings match existing doc conventions in both files

[isaaclab-review-bot]

Isaac Lab Review Bot

This documentation-only change adds a renderer overview warning and a matching Known Issues entry for Isaac RTX's documented 15625 scene-partition cap, including symptoms, plugin warning text, and mitigation guidance.

• Design and architecture: The warning is placed with the existing scene-partitioning guidance, while the detailed entry follows the established Renderers Known Issues structure and is linked through a dedicated RST reference label.
• API: No code, configuration defaults, exports, or public API behavior changes. The existing IsaacRtxRendererCfg.enable_scene_partitioning attribute is referenced consistently, and the new cross-reference has a matching target.
• Implementation: The changed RST constructs, heading structure, log excerpt, and cross-reference are internally consistent. No source package changed, so no package changelog fragment is required. The remaining non-blocking risk is that the externally defined cap and exact plugin behavior should remain aligned with the Isaac Sim/Kit version supported by Isaac Lab.

No blocking issues. No inline issue met the actionable-evidence threshold; the assessment above records the review feedback.

Automated review; human maintainers own approval decisions.

[greptile-apps]

Greptile Summary

Documents the Isaac RTX renderer’s 15,625 scene-partition limit and the resulting tiled-camera behavior.

• Adds a warning to the renderer overview.
• Adds a detailed Known Issues entry describing applicability, symptoms, and available workarounds.

Confidence Score: 5/5

The documentation-only PR appears safe to merge with no concrete defects identified.

The new cross-reference is uniquely defined and included in the documentation build, the referenced configuration attribute exists and is exported, and the documented configuration behavior agrees with the renderer implementation.

Important Files Changed

Filename	Overview
docs/source/overview/core-concepts/renderers.rst	Adds a concise warning about the scene-partition cap and links to the detailed Known Issues entry.
docs/source/refs/issues.rst	Documents the affected renderer, warning message, visible consequence, and supported configuration alternatives.

_{Reviews (1): Last reviewed commit: "Document the 15625 scene partition cap f..." | Re-trigger Greptile}

[kellyguo11]

is it only for kit? or also ovrtx?