Whether SkinnedLitProgram.dispose has run.
Deletes the GL program (§83). Idempotent; live context only.
Uploads the scene ambient term (§68).
Optionalopacity: numberSelects whether this draw samples the bound albedo texture.
Uploads the frame's point and spot lights, or nothing (§68, R-17).
Switches the shadow comparison per draw (§49's receiveShadow).
Uploads the frame's shadow state, or nothing (§69, R-18).
StaticcreateCompiles and links the program — LitProgram.create's contract (§89).
The skinned Lambert-lit pipeline (§54, §57, §68; RFC 0003) —
LitProgram's contract plus the palette. Lights, punctual set, and §69 shadow state are the same shared uniform classes the lit and standard pipelines use, so the skip rules cannot drift.