ReadonlycapacityPool capacity in particles — must equal the emitter's, and
bindGpuSimulation re-checks the pairing from the other side. A
positive safe integer.
Optional ReadonlylabelDiagnostic name, echoed on buffer and pass labels.
ReadonlysystemThe emitting node's stable id (ParticleDrawable.id) — the key the
renderer's draw path joins on, exactly as WgpuParticleCache keys the
instance buffer. One simulation per system id.
Options of
WebgpuRenderer.createParticleSimulation.