verify-pixels
Installation
SKILL.md
Prove pixels unchanged
Choose the gate before building the capture harness. Both classes require controlled captures that cover the affected surfaces.
Classify the change
| Change | Gate |
|---|---|
| Batching, instancing, mesh indexing, chunking, pooling that preserves RNG order, an asset format swap with identical decoded data | Byte-exact matrix |
| Re-rolled or re-sampled procedural noise, a changed RNG consumption order, math moved between CPU and GPU, changed precision, fewer octaves or samples | Not byte-gateable: side-by-side review |
For the second class, sampled values or precision can change. Report it as "not byte-gateable" and use the side-by-side gate after the shared capture setup below; do not invent uncalibrated perceptual thresholds to approve it.