pub fn pack_emitter(
emitter: &Emitter,
kind: ParticleKind,
time: f32,
color: [f32; 3],
) -> Vec<ParticleInstance>pub fn pack_emitter(
emitter: &Emitter,
kind: ParticleKind,
time: f32,
color: [f32; 3],
) -> Vec<ParticleInstance>