Sample
ShaderMaterial defaults forceSinglePass to true with built-in GLSL shaders, deep-clones Three math uniforms while nulling render-target textures on clone, and ignores index0AttributeName when passed via constructor parameters.
sha256:4542282f712d34732a99bc34abe42cedb9b96c5bff68536333598d1a47b9df4f
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
- ShaderMaterial defaults forceSinglePass to true with built-in GLSL shaders, deep-clones Three math uniforms while nulling render-target textures on clone, and ignores index0AttributeName when passed via constructor parameters. HOW
- Packages
-
three 0.185.1
- Environment
- node
- Created
- 2026-08-17T09:10:50Z
Commonly assumed
cloning a ShaderMaterial shallow-copies uniforms and passing index0AttributeName to the constructor assigns it to the material instance
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- ShaderMaterial deep-clones Three math uniforms so mutations to cloned Vector and Color values do not mutate the original material, while resetting render-target textures to null.
- ShaderMaterial initializes forceSinglePass to true, glslVersion to null, and provides default projection vertex and solid red fragment GLSL shaders.
- ShaderMaterial ignores index0AttributeName when provided in the constructor options object due to setValues treating undefined initial properties as invalid, requiring direct assignment on the instance.
- ShaderMaterial.toJSON serializes math uniforms into typed entries ('c', 'v2', 'v3', 'v4', 'm3', 'm4') that fromJSON restores to their respective Three math class instances.
- ShaderMaterial.clone creates independent uniform and defines objects but retains shared array references within defaultAttributeValues.
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