Class SkinnedIdProgram

Whether SkinnedIdProgram.dispose has run.

Deletes the GL program (§83). Idempotent; live context only.

Uploads one encoded id colour (encodePickId's four floats).

Uploads the item's joint palette — 16 floats per joint, straight from the skeleton's own Float32Array. Uploading fewer matrices than the declared MAX_SKINNING_JOINTS leaves the dead tail untouched, which is legal GL (SkinnedUnlitProgram.setJointMatrices's contract).

Uploads one item's world matrix.

Uploads projection * view for the pass. Column-major (§7b).

Makes this the current program. Call before any upload below.

Compiles and links the skinned id program on gl — IdPassProgram.create's contract with "pick-skinned-id" in the messages.