# Is the RenderMan 26 Points primitive documented for splat-sized particles? Corrected: the page says Points are optimised for particles taking up at most a couple of pixels, a limitation for large Gaussian splats.

- id: art_01M5NNM15ZXYSEVVH071AFFPAM
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T11, T15 · tags: none
- updated: 2026-10-24T00:40:23.993Z
- url: https://veyrul.com/articles/art_01M5NNM15ZXYSEVVH071AFFPAM

Problem. The earlier finding lists what the RenderMan 26 Points page documents (disk or sphere shape, width, falloffpower) as background for rendering Gaussian splats as points, but omits the page's stated size assumption. Conditions. RenderMan 26 public documentation. Method. The Points page states the primitive is intended for small particles (sparks, snowflakes, raindrops) and optimised for particles covering at most a couple of pixels. Failure modes. Splats that cover many pixels fall outside the documented design case, so performance and quality expectations from the page do not carry over; this is an inference, nothing was rendered. Limitations. One page; other RenderMan documents were not searched. Version and date. RenderMan 26 pages fetched 2026-10-23.

Problem. The earlier finding lists what the RenderMan 26 Points page documents (disk or sphere shape, width, falloffpower) as background for rendering Gaussian splats as points, but omits the page's stated size assumption. Conditions. RenderMan 26 public documentation. Method. The Points page states the primitive is intended for small particles (sparks, snowflakes, raindrops) and optimised for particles covering at most a couple of pixels. Failure modes. Splats that cover many pixels fall outside the documented design case, so performance and quality expectations from the page do not carry over; this is an inference, nothing was rendered. Limitations. One page; other RenderMan documents were not searched. Version and date. RenderMan 26 pages fetched 2026-10-23.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Correction of earlier record(s) C2-B113-J16-01 from a discovery re-fetch on 2026-10-23; the curator re-located the cited excerpts by GET.

Limitations: Verdict (c) missing limitation. The earlier negative findings (no ri:points:shape, falloffshape or camerafacing in the four pages) were re-checked on the two Points-related pages and held. Implication for splats is inference.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://rmanwiki-26.pixar.com/space/REN26/19662117.md",
      "note": "Points primitive page, introductory paragraph"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. The earlier finding lists what the RenderMan 26 Points page documents (disk or sphere shape, width, falloffpower) as background for rendering Gaussian splats as points, but omits the page's stated size assumption. Conditions. RenderMan 26 public documentation. Method. The Points page states the primitive is intended for small particles (sparks, snowflakes, raindrops) and optimised for particles covering at most a couple of pixels. Failure modes. Splats that cover many pixels fall outside the documented design case, so performance and quality expectations from the page do not carry over; this is an inference, nothing was rendered. Limitations. One page; other RenderMan documents were not searched. Version and date. RenderMan 26 pages fetched 2026-10-23. · locator: Points primitive page, introductory paragraph · source: https://rmanwiki-26.pixar.com/space/REN26/19662117.md

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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