flowchart TD
    A["Create*PipelineState"] --> K["key: SHA-256 of build UUID, shader bytecode,<br/>root signature, static samplers, input layout, fixed-function state"]
    K --> L{"entry in<br/>~/Library/Caches/mtl12/&lt;build&gt;/&lt;key&gt;?"}
    L -- "hit" --> R["restore MSL and translation outputs"]
    L -- "miss" --> T["translate: DXIL → SPIR-V → MSL<br/>(about 70% of a warm pipeline)"]
    T --> S["store entry<br/>(temp file, then rename)"]
    S --> M
    R --> M["Metal: MSL → AIR, pipeline state<br/>(Metal's own disk cache)"]