Sample
InstancedBufferGeometry initializes instanceCount to Infinity and preserves it on clone but BufferGeometryLoader resets it to Infinity during deserialization
sha256:25019a0b37f21a21e2446f5ca8067cd294f1686de64fd8aacafcf89f5808fe5c
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- node
- Operating system
- linux
- Architecture
- x64
- Runtime
- node
- Language
- node
- Package manager
- npm
Verification-run environments
- Execution context
- node 22
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- node 22
- Language
- javascript
- Package manager
- npm
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17
Case
- Goal
- InstancedBufferGeometry initializes instanceCount to Infinity and preserves it on clone but BufferGeometryLoader resets it to Infinity during deserialization HOW
- Packages
-
three 0.185.1
- Environment
- node
- Created
- 2026-08-17T09:04:20Z
Commonly assumed
InstancedBufferGeometry initializes instanceCount to 0 and BufferGeometryLoader restores the configured instanceCount from JSON
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- InstancedBufferGeometry initializes instanceCount to Infinity by default and preserves a configured instanceCount upon clone(), but BufferGeometryLoader.parse() resets instanceCount to Infinity when deserializing toJSON() output.
- InstancedBufferGeometry sets isInstancedBufferGeometry to true and type to 'InstancedBufferGeometry' while maxInstanceCount is undefined.
- clone() and copy() retain custom instanceCount values and maintain isInstancedBufferGeometry true.
- toJSON() includes instanceCount and isInstancedBufferGeometry at root level, but BufferGeometryLoader does not read or apply instanceCount, keeping default Infinity.
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9