Age of the particle.
Color of the particle.
Length of the trail.
Life duration of the particle.
OptionallocalLocal position of the particle.
the memory of the particle.
OptionalparentParent matrix for transformation.
Position of the particle.
Previous states of the particle.
Size of the particle.
Speed modifier of the particle.
Initial color of the particle.
Initial size of the particle.
Initial speed of the particle.
UV tile index.
Velocity of the particle.
Particle implementation for trail-based particles.