maxwildersmith/splataverse-simready

Splataverse SimReady

CPU balanced Gaussian representations of NVIDIA SimReady Assets, with original source correspondences, sampled PBR channels and authored USD articulation metadata. Public with manual access approval.

Balanced release in progress. This verified snapshot contains 2,531 balanced source packages, 2,610,240,333 Gaussians and 174.56 GB of archives. The frozen source inventory contains 2,632 USD-bearing root packages; the source card advertises 2,603 assets. Package counts are not independently audited object/assembly counts.

Verified release status and archive index · Qualified global profile · Measured quality results · Format

Quality and conversion

The globally frozen balanced profile passed independent source geometry/articulation validation and the ten-object source-albedo appearance gate: every object's heldout mean LPIPS is at most 0.1 at 1024×1024, without exposure fitting. Per-object heldout means range 0.0062–0.0672. Calibration views determined the global profile before new-candidate heldout scoring. The initial extra 0.085 calibration safety margin was missed by the case (0.0867); selection used the requested 0.1 target, explicitly recorded before heldout scoring. The heldout threshold remained 0.1 per object. Original failures, the analytical repair plan and the selection decision are retained in release provenance.

Conversion is CPU only. The selected recipe uses source texture activity, source surface area and a global geometric minimum at resolution 512. Each asset is converted analytically from the original source; rendering is used for offline pilot validation. It preserves all valid source faces, materials, original IDs and authored links/joints. There is no silent uncapped fallback or source/material deletion. Exact counts, density settings, code hashes and any explicitly documented minimum-coverage budget exceptions accompany each archive.

The measured appearance result covers the frozen ten-object pilot. Every additional published asset receives independent geometry, material-channel, source correspondence, archive/hash and authored articulation checks. Whole-corpus rendered LPIPS and relighting fidelity are not certified by the pilot.

Data and provenance

Canonical balanced paths are versionless: balanced/assets/<asset_id>.tar, with adjacent .json and .validation.json reports. TARs retain Gaussian chunks, source correspondence and physical-scale sidecars, sampled PBR attributes, original USD/material/metadata records, source transforms and pinned file URLs/hashes. Raw authored physics/PhysX/custom properties, links, joint relationships/frames/limits/drives, variants and source units remain available. Missing authored states remain null; derived validation poses are labeled as derived.

Coordinates are right-handed Y-up meters. Decode each SPZ chunk using its explicit units and origin: xyz_m = decoded_xyz / spz_units_per_meter + origin; physical scales are exp(decoded_log_scales) / spz_units_per_meter. Original physical scales and quaternions remain in sidecars. Existing legacy uncapped uploads remain separate under assets/ and are not counted as balanced releases.

The existing CPU nearest-center inspection previews are not alpha-composited or lit PBR quality evidence. The measured pilot uses the documented Gaussian rasterizer against independent original-material source-mesh references.

Source and license

Source: NVIDIA SimReady Assets, pinned revision 7a0f37985996d244e49cedf92ff1df7e4424247e. Original per-package CC BY 4.0 licenses and attribution are retained. Manual access approval does not replace or narrow those license rights. The full pinned source inventory is retained in source_inventory.json; original textures retain pinned source references and hashes.