Sample
Verify ACESFilmicToneMapping numeric constant value, shader definitions, WebGPU node integration, and color transform behavior in three 0.185.1.
sha256:9e86d7f554f6fd890a7941c74ddc622705169a8ab2b0f80d934baa04f50ecb84
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
- Verify ACESFilmicToneMapping numeric constant value, shader definitions, WebGPU node integration, and color transform behavior in three 0.185.1. HOW
- Packages
-
three 0.185.1
- Environment
- node
- Created
- 2026-08-17T22:07:56Z
Commonly assumed
ACESFilmicToneMapping is an object or tone mapping pass class rather than an integer mode constant (4) consumed by WebGL and WebGPU pipelines.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- ACESFilmicToneMapping is exported as the integer constant 4 across root and webgpu entrypoints, identifying the ACES Filmic curve in ShaderChunk and ToneMappingNode pipelines.
- Tone mapping constants distinguish NoToneMapping (0), LinearToneMapping (1), ReinhardToneMapping (2), CineonToneMapping (3), ACESFilmicToneMapping (4), CustomToneMapping (5), AgXToneMapping (6), and NeutralToneMapping (7).
- ShaderChunk tonemapping_pars_fragment defines the vec3 ACESFilmicToneMapping GLSL function applying the RRTAndODTFit curve scaled by exposure / 0.6.
- ToneMappingNode in three/webgpu and toneMapping in three/tsl accept ACESFilmicToneMapping to configure WebGPU node rendering.
- ACES Filmic curve transforms linear color through ACESInputMat and ACESOutputMat with rational polynomial fitting, clamping black to 0.0 and compressing highlights asymptotically to 1.0.
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